Tanning and retanning. Beamhouse. Fatliquors. Drum dyes. Auxiliaries

Transcription

1 Beamhouse Tanning and retanning Fatliquors Auxiliaries Drum dyes

2 WET PROCESS CATALOGUE CONTENTS 1.PRESERVASING AGENTS 2. SOAKING /DEGREASING AGENTS 3. DEHAIRING AGENTS 4. BATING/DELIMING AGENTS 5. TANNING AND RETANNING AGENTS Antibac RC Antibac Z TRD-H TRD-25 TRD-27 TRD-33 TRD-62 TRD-75-E TRD-90-E Bactol EG Omplex Range Reskal S Rindol RN Range Serconditioner WB Sertan AL Sertan ALD Sertan B Sertan BM Sertan BSF Sertan BSP Sertan CH Sertan CO Sertan D-3 Sertan DC Sertan DCB Sertan ELB Sertan F Sertan IN Sertan MC Sertan NBR Sertan ND Sertan PAK Sertan POL Sertan RP Sertan RPC Sertan RR Sertan VGH Sertan VGM Sertan WBL Serfix MF-5 Neutriser N

3 6. FATLIQUORS 6.1 CRUDE 6.2 SULPHATED 6.3 SULPHITED 6.4 SYNTHETIC 6.5 SPECIAL 7. DRUM DYE Seroil PB Seroil PLSN Seroil CMT Seroil G Seroil MS Seroil P Seroil SU Seroil TTK Seroil UMR Seroil FE Seroil FO Seroil SPC Seroil BL Seroil CL Seroil JP Seroil L Seroil L2 Seroil LAN Seroil MVV Seroil SCB Seroil VS Seroil WPH Seroil WPS Seradye range

4 Beamhouse

5 BEAMHOUSE Antibac RC Antibac Z TRD-H TRD-25 TRD-27 TRD-33 TRD-62 TRD-75-E TRD-90-E Bactol EG Omplex C Reskal S Rindol RN-RANGE Serconditioner WB Fungicide of general use Bactericide of general use Biodegradable enzymatic soaking and rinse Degreasing agent Degreasing agent for all kind of leathers Degreasing agent Natural fat emulsifier-fatliquor penetrator Surfactant of general use Wetting back - Degreaser of general use Liming auxiliary Basifying and masking agent Soft but deep deliming Ecological enzymatic bating Specific wet-blue

6 Antibac RC Fungicide for all kind of leather Fluid liquid Brownish Active substance of nitrogen sulphur organic compounds Protection of soaking hides against mould attack, even for long distance consignments. Ph: 4 ± 1 Before its application it must be diluted with water 1:3 a 1:10 parts, adding this solution slowly into the bath. Pickling: It must be added a 0,05-0,25% on pelt weight, 15 after the acid addition. Wet blue: It must be added a 0,05-0,10% on pelt weight for a short time conservation (one month). It must be added a 0,10-0,25% on pelt weight for a long time conservation (more then one month). Vegetal tanning: It must be added a 0,05-0,20% on pelt weight. Addition with vegetal tannins. Conservation for the retanning: 0,05-0,10% on the shaved weight. The preservation of finished hides is better adding it in the last step of wet together with the fatliquor. Example of application: (% on pelt weight) Pickling Tanning Retanning Chrome tannage progressive process long time conservation : Pickle float 80% Chrome 33 3% run 30 Seroil FO 0,5% Antibac RC 0,25% run 20 (emulsified together) Chrome 33 3% run 60 Omplex C 0,4% run 60 Omplex C 0,5% run 8h PH=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile Usage: Chrome tannage custom process long time conservation : Pickle float 80% Chrome 33 6% run 15 Seroil FO 0,5% Antibac RC 0,25% run 45 till full penetration (emulsified together) Omplex C 0,9% run 8h PH=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile

7 Antibac Z Bactericide of general use Fluid liquid Yellowish Ditiocarbonateds substances compound It is a bactericide, which prevents damage and losses caused by the attack. It s soluble in water, biodegradable, easy to apply and fully compatible with almost all auxiliary products in the leather industry. Due to its special combination of active substances, it has a wide range of action, covering fungi, bacteria and yeasts. Ph: 9-10 It does not remove any damages caused before the soaking by deficiencies in the preservation during the storing and transportation of the unworked leather. During the soaking, it works as a preservative, preventing microbial spread, rot and loss of hair and wool. Soaking The dosage depends on the amount of dirt, the temperature and the soaking time. It s advisable to add Antibac Z directly to the soaking water, even before starting the process. It must be noticed that the product spreads quickly and homogeneously (for example, for a sufficient soaking length, add in diluted form). Antibac Z must not get in contact with metals, especially copper and its alloys, in order to prevent any possible coloration. Properly stored in closed original containers, it has a stability of 1 year. Under +10ºC some parts of the product may crystallise. However, these parts can be dissolved again by heating at temperature. Sensitive to temperatures under +5ºC. Pre-wash: 0,05-0,10%. Pre-soaking and soaking: 0,15-0,25% Usage:

8 Bactol EG Dehairing amino auxiliary agent. Fluid liquid Colourless to yellowish Secondary amine derivative At the beginning of the liming operation contributes to a good unhairing property, with a specific action on the hair root. The use of Bactol EG. makes possible the sulphide reduction in a substantial rate. Leathers treated with Bactol EG. are flat and the wrinkled areas (bellies and neck) are really improved (more square feet). Bactol EG. can be used in the painting for dehairing sheepskins and goatskins, to get flat pelts, with low swelling and very fine grain. It accelerates the penetration of lime and sulphide, this improves the breaking of sulphur linkages and the removal of hair-roots, and allows excellent stretching of growth marks. Ph: 11±0,5 Liming Liming (% on salted weight): Cowhides 1,0-1,2%, Sheep-Goat 1,3-1,5%, Pig 1,3-1,5% Example of application: Dehairing process. Cow hides for upper, in paddle. Water at 26ºC 250% Bactol EG 1,5-3% run 15 Lime 1,5% run 15 Sodium Sulphide 1,5% run 90 Lime 1,5% TRD-27 0,2% run 45 Automatic 10 /h Next day Rinse, Wash, Unload, Flesh Usage:

9 Omplex Basifying and masking agent C Solid in powder White to yellowish Organic salts and versatile organics acids. Omplex C is specially designed to achieve a slow uniform chrome basification during process. Due to its chemical characteristics, it gets a very progressive alkalinity liberation, without abrupt increases of the ph. Its content of polyfunctional organic acids assure a high chrome masking without flocculation in spite of the working conditions, even at extreme ph. The chromium gets fixed uniformly through all the skin layers, so it improves the physical properties. Active matter: 100% Alkalinity: gNaOH/100g Small leathers Big leathers Rechroming Tanning Omplex C can be poured directly into the drum. Omplex C gives handling simplicity, smallest wastewater pollution, and high chrome exhaustion. For that reason you can save about 30% of Chrome salt 33ºSch., achieving the normal Chrome oxide rate fixed on the leather, but improving uniform chrome distribution throughout, in the grain, in the intermediate layers and in the flesh side. Tanning (% on pelt weight) For all kind of leathers, always use 15% based on the amount of chrome sulphate of 33ºSch basicity and 25% of chrome oxide. Example of application: For Cow & Sheep skin(% on pelt weight): Pickle float 80% Chrome 33 6% run 15 Antibac RC 0 15% run 45 till full penetration Omplex C 0 9% run 8h PH=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile

10 Reskal S Deliming agent with deep and soft effect Solid in powder White to yellowish Ph: 2,5±0,3 Light cationic Small leathers Big leathers Inorganic salts and polyfunctional organic acids Reskal S is an excellent deliming agent, providing a smooth, clean, elastic and firm grain. Thanks to its mild although deep effect is suitable for leathers without splitting. Reskal S provides an excellent deliming with good buffering effect thanks to their content in aromatic acids. The formed salts of calcium are easily soluble. It has a deep action, it provides a slow swelling reduction of the pelt, giving a very clean, elastic and firm grain. It has good solubility and an organic complexion action whit the chrome tanning agents. The composition of Reskal S makes it compatible with the Rindol, TRD, and Antibac series used during bating process. Deliming Deliming ph slope compared with Reskal FF and the ammonium free Reskal NC7. Deliming to hides for nappa and footwear: 1,5-2,5% Reskal S For fine leather, after bating, add to the rinsing bath: 0,25% Reskal S Water at 30ºC 150% Reskal S 0,25% 15 Water at 36ºC 60% Reskal S 2% 60 Rindol CR-600 1% TRD-78-E 0,3% Wash with cold water Continue with pickle

11 RANGE Rindol RN Bating agent ammonium salts free Technical Data Sheet Solid in powder White to yellowish Ph: 7±1 Small leathers Big leathers Alkaline Bating Mixture of alkaline and pancreatic proteases Rindol RN is an ecological enzymatic product range with different concentrations (700, 1000, 1500) very practical for its use in tannery. It can be used in a new bath or in the deliming bath for all type of skins. Due to its balanced combination of enzymes with different functions gives an extremely clean surface combined with a very good elimination of the interfibrelary dirt. As a result of this combination of enzymes the leathers treated with Rindol RN range tend to be softer with more grain flexibility. Excellent results are obtained after deliming with the ecological ammonium salts free Reskal N. It is recommended to work at 34-38ºC and ph 9.0. ity tiv c A % It can be poured directly into the drum without previous dissolving. If stored in a dry place, it can be preserved for a long time. It is totally biodegradable and its use does not require any particular precaution RINDOL RN The % depends on the skin and desired article. ph Example of application: Ammonium free process Water at 30ºC 150% Reskal NC7 0,3% 15 Water at 36ºC 60% Reskal NC7 2,2% TRD-78-E 0,3% 60 Rindol RN x% Wash with cold water Continue with pickle

12 The % depends on the skin and desired article. Guidance dosages Rindol RNC (1500 ULV): Cow 0.4% - 0.8% (on pelt weight) Goat 0.8% - 1.2% (on pelt weight) Sheep 0.3% - 0.5% (on pelt weight) Pig 0.4% - 0.6% (on pelt weight) Guidance dosages Rindol RNN (1000 ULV): Cow 0.6% - 1% (on pelt weight) Goat 1.3% - 1.7% (on pelt weight) Sheep 0.9% - 1.3% (on pelt weight) Pig 1.2% - 1.6% (on pelt weight) Guidance dosages Rindol RND (700 ULV): Cow 0.8% - 1.3% (on pelt weight) Goat 1.7% - 2.2% (on pelt weight) Sheep 1.3% - 1.7% (on pelt weight) Pig 1.7% - 2.2% (on pelt weight) Rindol RN

13 Serconditioner WB Specific wet-blue enzymatic bating agent Technical Data Sheet Solid in powder White to yellowish Carbohydrase of bacterian origin 6.0 KTAU For Wet-Blue hides that have not been enough bated due to their origin. The use of Serconditioner WB provides softness due to it removes degradated proteins and other compounds that fill the spaces between the fibres. It is useful for double face when the necks are too hard. In the natural milled articles helps to get the floatter effect in the butt where the structure is more compact and it s difficult to get the desired effect. Ph: 6-7 Small leathers Big leathers Hides should be previously rinsed for 20 minutes to remove the salts and possible free acidity. After neutralize with sodium bicarbonate to 5,5-6,5 struck-through, after neutralising, proceed with the bating in a new bath 100% of bath water at 50-60º C, add 1-4% Serconditioner WB and run for 3 hours. It recommended increase time in 1 or 2 more hours when working in a lower temperature. Hides treated with Serconditioner WB are clean and soft and they are ready to follow the next process with previous light acidulation at ph 4-5 with formic acid. Doses recommended on shaved weight or wet-blue: Wet-blue bating Cattle 2-3% Goats 1-3%

14 RANGE TRD H Biodegradable enzymatic soaking and rinse Technical Data Sheet Solid in powder Brownish 11±0,5 Surfactant with alkaline and biodegradable enzyme (500, 1500 ULV) TRD-H is an effective soaking agent for all kind of raw hides, also when the circumstances are unfavourable. It has got a good dispersing power that removes various kinds of dirt and natural fat, improving the soaking effect. It also has a low enzymatic activity. It can be poured directly into the drum without previous dissolving. TRD-H gives a uniform soaking, making easier the penetration and distribution of all unhairing chemicals. For that reason the pelt looks cleaner, open and flat. Pre Soaking: TRD-H (500 ULV): Add %. TRD-H -1.5 :(1500 ULV): Add %. Small leathers Big leathers Presoaking Soaking Main soaking: TRD-H (500 ULV): Add %. TRD-H -1.5 :(1500 ULV): Add 0.5-1%. Example of application TRD-H: Soaking (% on salted weight) Process for cowhides. Pre soaking Water at 25ºC 200% Antibac Z 0.1% TRD-H 0.3% run 60 Drain Main soaking Water at 25ºC 150% Antibac Z 0 2% TRD-H 2% Set the ph with sodium carbonate at 9,5-10,5 ( % ) run 3-4 h stop 30 run 30 stop 30 run 30 Automatic overnight if necessary. Next step rinse and wash. Example of application TRD-H -1.5: Soaking (% on salted weight) Process for cowhides. Pre soaking Water at 25ºC 200% Antibac Z 0.1% TRD-H % run 60 Drain Main soaking Water at 25ºC 150% Antibac Z 0 2% TRD-H % Set the ph With sodium carbonate at 9,5-10,5 ( % ) run 3-4 h stop 30 run 30 stop 30 run 30 Automatic overnight if necessary. Next step rinse and wash.

15 TRD 25 Wetting back - Degreaser of general use Fluid liquid Green Stability:: 8,5-9,5 Excellent Balanced mixture of surfactants TRD-25 is a strong wetting agent for soaking and wet blue. TRD-25 is applied as a degreasing agent for raw hides furs and as a soaking agent for dry hides. It is also used as an auxiliary in deliming process to improve degreasing effect. Since TRD-25 has more active matter, it has better reaction with skin fat. TRD-25 can be applied as emulsifier in the main fatliquoring. TRD-25 is specially suitable in the liming as a degreaser and penetration agent for skins with firm structure and much natural fat. -Non ionic Small leathers Big leathers Fur leathers Degreasing Liming Deliming Soaking WB washing WB degreasing Guidance dosages and processes: Washing of fur leathers: Always use 2-3 gr/l Soaking-Liming (% on salted weight): Cow 0,5-0,7% Lamb 0,7-1,5% Pig 1,0-1,5% Degreasing (% on pelt weight): Cow 0,2-0,5% Lamb 1,0-3,0% Pig 3,0-5,0% Example of application: Sheep with wool (After deliming) Degreasing (% on pelt weight): Without float Kerosene 8-10% run 10 TRD % run 60 Salt 6% run 30 +Water 35ºC 200% run 20 Drain Water 35ºC 200% TRD-25 0,5-1% run 20 Drain and wash Continue with the pickle-tannage Usage:

16 TRD 27 Degreasing agent for all kind of leather Fluid liquid Colourless to yellowish Balanced mixture and small part of anionic non ionic surfactant TRD-27 is a detergent with high degreasing power and strong wetting agent for soaking and wet blue used for all purpose field of application; it is particularly suitable for the use in all beamhouse processes. The use of TRD-27 is recommended for all kind of leather but especially for leather with high content of natural fat due to TRD-27 has an excellent dispersing effect on it and leads to an even distribution. This is particularly important in the subsequent tanning and dyeing processes. Ph: 8±0,5 - -Non ionic Small leathers Big leathers Degreasing Soaking Liming Deliming WB washing WB degreasing Usage: Used in the soak an easy wetting is achieved. When applied in the liming the efficiency of it is improved as TRD-27 accelerates penetration and helps to distribute the liming chemicals. Due to a better penetration an even swelling of the skin is achieved the danger of looseness is reduced, wrinkles are less visible and the removal of hair roots and pigments is improved which is of basic importance for obtaining a smooth and fine grain. Another important field of application for TRD-27 is the washing of wet-blue to level out differences in the fat distribution, an important matter to achieve a The optimum degreasing effect from TRD-27 is achieved when it is applied in all beamhouse processes. Guidance dosages and processes: In the soaking: (% on salt weight) Bovine hides 0,2 0,3 % Sheep and goat 0,5-1 % Doubleface 1-2 gr/l In the liming: (% on salt weight) Bovine hides 0,1 0,2 % Sheep and goat 0,2 0,3 % In deliming: (% on pelt weight) Bovine hides 0,2 0,3 % Washing of wet-blue: (% on shaved weight) Bovine hides 0,2 0,4 % Sheep and goat 0,3 0,6 % Post bating degreasing: (% on pelt weight) Ovine hides 3 8 %

17 Rewetting of crust leather: (% on crust weight) % Water 45 C 0,5-1,0 % Ammonia 0,5-1,0 % TRD Degreasing after bating: (% on pelt weight) After bating ph 8-8,5 Rinse water 35ºC Put into tanning drum without float 3-7% TRD-27 Without float run water 35ºC run 20 drain 200% water 35ºC 0,3-0,5% TRD-27 run 20 rinse 30ºC till water clear Degreasing after bating (solvent): (% on pelt weight) After bating ph 8-8,5 Rinse water 35ºC Put into tanning drum without float 10-15% solvent run % TRD-27 run water 35ºC run 20 drain 200% water 35ºC 0,3-0,5% TRD rinse 30ºC till water clear Degreasing of pickled sheep: (% on pickle weight) Put into tanning drum 150% water 35ºC 10% salt 0,5-1% TRD-27 run 10 add pelts run 10 drain-flesh if necessary 100% water 30ºC 8% salt 0,8% sodium bicarbonate 1% sodium formate 3-7% TRD-27 run 10 add pelts 120 ph % water 35ºC run 30 drain- wash 30ºC Degreasing-pretanning: (pickled sheep) (% on pickle weight) Put into tanning drum 100% water 35ºC 10% salt 1% TRD-27 run 10 add pelts run % sodium bicarbonate 1 2% sodium formate run 40 ph 3-4 drain-flesh if necessary without float 2-6% TRD-27 run 10 3% Sertan ALD +20% water 35ºC run 30 1% sodium formate run 30 ph 4-5 (S.T. 60ºC approx) +300% water 45ºC run 20 drain- wash 45ºC Degreasing wet-blue (solvent): This process is for tanned leathers not degreased previously or with a deficient degreasing. (% on shaved weight) Rinse water 40ºC Put into tanning drum without float 10-15% solvent run % TRD-27 run water 35ºC run 20 drain 200% water 60-70ºC % TRD-27 run 20 rinse 60-70ºC till water clear Degreasing wet-blue: This process is for tanned leathers with a deficient degreasing. (% on shaved weight) Rinse water 60-70ºC drain 10-15% water 1-3% TRD-27 run water 60-70ºC run 20 drain 200% water 60-70ºC % TRD rinse 60-70ºC till water clear TRD 27

18 TRD 33 Degreasing agent for all kind of leather Fluid liquid Bluish Balanced mixture of anionic non ionic surfactant, which is lightly oxiethilenated. TRD-33 has detergent with high emulsifying power of the natural fat. The use of TRD-33 is recommended for all kind of leather but specially for leather with high content of natural fat. The optimum degreasing effect from TRD-33 is achieved when it is applied in all beamhouse processes. Ph: 7±0,5 -Non ionic Small leathers Big leathers Soaking Liming Degreasing WB washing Guidance dosages for cattle: Cattle wet blue degreasing 0,3-0,5% Cattle liming 0,1-0,2% Guidance dosages for lamb: Lamb liming 0,2-0,3% Lamb wet blue degreasing 0,5-0,7% Lamb postliming degreasing 7-10% Guidance dosages for goat: Goat liming 0,1-0,2% Goat wet blue degreasing 0,4-0,6% Usage:

19 TRD 62 Natural fat emulsifier-fatliquor penetrator Fluid liquid Colourless to yellowish 6,5±1 Stability: Excellent -Non ionic Small leathers Big leathers Soaking Liming Deliming Pickling Fatliquoring Neutralization Usage: Sulphonated surfactants TRD-62 is a dispersing, degreasing and softening agent for accelerating the soakling of all types of hides that do not dry out the surface of the leather (grain, nap or wool ).It is an excellent product to add in the washing baths of fur leathers. Sheep skins washed with TRD-62 have a soft and silky feel. TRD-62 is used as a penetration auxiliary in the deliming process and as a dispersing for natural fat during pickle and tanning process, avoiding chrome spots. When used before or in the dye bath performs an excellent dispersion of the anionic dyes and fats. TRD-62 is used also a an emulsifier and stabilizer for fatliquors leading to an uniform dispersion reaching an increase of the tear resistance and a remarkable improvement in the uniformity of the finishing absorption. Guidance dosages and processes: Washing of fur leathers: Always use 2-3 gr/l Soaking Liming (%on salted weight): Cow 0,2-0,3% Lamb 0,7-1% Pig 1,0-1,2% Deliming-Pickling (% on pelt weight): Cow 0,1-0,2% Lamb 0,3-0,5% Pig 0,7-1,0% Example of application: In fatliquoring(% on pelt weight): After retannig. +Water 60ºC 80% Seroil TTK 3% Seroil PLS-N 3% Seroil MS 1% TRD-62 0,4% run 60 Formic acid 0,5% run 20 Formic acid 1% run 20 In pickling(% on pelt weight) After degreasing of Lambskins. Water 100% Salt 8% run 15 TRD-62 0,5% run 15 Formic acid 0,5% run 30 Sulphuric acid 0,8% run 2h ph 2,8-3 Serchrom 33P 6% run 15 Antibac RC 0,2% run 90 Omplex C 0,8% run 6-8 h ph= 3,8 Tc>100ºC Drain unload

20 TRD 75-E Wetting back - Degreaser of general use Fluid liquid Colourless to yellowish Balanced mixture of surfactants TRD-75-E is applied as a washing agent for wet blue and as a soaking agent for dry hides or salted. It can be also used as an auxiliary in deliming process to improve degreasing effect. TRD-75-E is suitable in the liming as a degreaser and penetration agent for skins with firm structure and much natural fat. TRD-75-E can be applied as emulsifier in the main fatliquoring. 6,5±0,5 Stability:: Excellent Non ionic Small leathers Big leathers Liming Deliming Soaking WB washing Crust wet-back Usage: Guidance dosages and processes: In the soaking: (% on salt weight) Bovine hides 0,3 0,5 % Sheep and goat 0,5-1,5 % Doubleface 1,5-2,5 gr/l In the liming: (% on salt weight) Bovine hides 0,2 0,4 % Sheep and goat 0,4 0,6 % In deliming: (% on pelt weight) Bovine hides 0,4 0,6 % Washing of wet-blue: (% on shaved weight) Bovine hides 0,3 0,6 % Sheep and goat 0,5 1 % Rewetting of crust leather: (% on crust weight) % Water 45 C 0,5-1,0 % Ammonia 0,5-1,0 % TRD-75-E

21 TRD 90-E Wetting back - Wet-blue washing Fluid liquid Bluish Balanced mixture of surfactants TRD-90-E is applied as a degreasing agent for raw hides furs and as a soaking agent for dry hides. It is also used as an auxiliary in deliming process to improve degreasing effect. TRD-90-E is suitable in the liming as a degreaser and penetration agent for skins with firm structure and much natural fat. TRD-90-E can be applied as emulsifier in the main fatliquoring. 8,0±0,5 Stability: Excellent Non ionic Small leathers Big leathers Degreasing Liming Deliming Soaking WB washing WB degreasing Usage: Guidance dosages and processes: Soaking-Liming (% on salted weight): Cow hides 0,5-0,7% Lamb 0,7-1,5% Pig 1,0-1,5% Degreasing (%on pelt weight): Cow hides 0,2-0,5% Lamb 1,0-3,0% Pig 3,0-5,0% Example of application: Sheep with wool (after deliming). Degreasing (% on pelt weight) Without float Kerosene 8-10% run 10 TRD-90-E 1-3% run 60 Salt 6% run 30 +Water 35ºC 200% run 20 Drain Water 35ºC 200% TRD-90-E 0,5-1% run 20 Drain and wash Continue with the pickle-tannage.

22 Retanning

23 TANNING AND RETANNING MINERAL LIGHT FASTNESS Sertan AL EXCELLENT Pretanning and retanning all kind of hides Sertan CH EXCELLENT Pretanning and retanning for all kind of leathers, semi or chrome Sertan CO MEDIUM Pretanning and retanning all kind of hides SYNTANS LIGHT FASTNESS Sertan B GOOD Retanning agent for light hides Sertan BM MEDIUM Retanning for soft hides Sertan BSF MEDIUM Retanning for soft hides Sertan BSP EXCELLENT Pretanning and Bleaching agent for veg tanned and w.b. retanning agent Sertan ELB EXCELLENT Tanning retanning agent for white hides Sertan IN GOOD Fullness and softness with low astringency Sertan ND MEDIUM Dispersing agent of vegetal and dying use Sertan NBR GOOD Tamponed retanning agent. Neutralising agent. Sertan RP GOOD Pretanning synthetic for vegetal tanning Sertan PAK GOOD Neutralising and retanning Sertan WBL V.GOOD Bleaching agent Neutriser N EXCELLENT Neutralising auxiliary of general use POLYMERIC LIQUID LIGHT FASTNESS Sertan ALD GOOD Tanning and retanning for wet-blue, wet-white and vegetable leathers Sertan POL EXCELLENT Pretanning wet white and chrome leathers Sertan RPC GOOD Compact for any type of leather with frayed structure Sertan RR GOOD Retanning and filling of chrome leather POLYMERIC POWDER LIGHT FASTNESS Sertan D-3 EXCELLENT Good filling effect, very white Sertan DC MEDIUM Good filling effect and grain flexibility Sertan DCB GOOD Good filling effect and grain flexibility Sertan MC EXCELLENT Good filling effect, very white SEVERALS LIGHT FASTNESS Sertan F GOOD Inert selective filling agent for retanning VEGETAL SYNTAN LIGHT FASTNESS Sertan VGH - Tanning or retanning agent with medium penetrating ability, Sertan VGM - - Serfix MF-5 - -

24 Sertan AL Basic aluminium sulphate Solid in powder White to yellowish Based on aluminium sulphate The Sertan AL can be used in tannage, retannage and in water proof fatliquor fixation. When using Sertan AL in tannage it can be used as a unique tanning agent giving leathers with a reinforced effect on the fibres and with some spongy effect. Shrinkage temperatures of 75ºC are reached. When used in the retannage an excellent buffing is obtained and increases the leather dying efficiency. Using Sertan AL deep colours with better dry and wet fastness are obtained. 4±1 Excellent Basicity: 50% Suede Fur leather Water proof Garment Gloving Guidance dosages and applications: The recommended rates depend on the articles: For goat or sheep suede from 3 to 6% on shaved weight For suede split from 3,5 to 6,5% on shaved weight For cow nubuck from 2 to 4% on shaved weight For waterproof from 1 to 3% on shaved weight after the fixation. Rechromage Pretannage Tannage

25 Sertan ALD Aldehyde tanning agent Liquid Clear Based on cyclic aldehyde. Sertan ALD Is an aldehyde tanning agent that can be applied in the pretanning, tanning and retanning operations for wet-blue, wet-white and vegetable tanned leathers. When used in chrome tannages it allows to reduce the quantity of chrome reaching the normal shrinkage temperature. 5 5±0,5 : Good Upholstery Garment Gloving Automotive Suede Soft nappa Shrunken grain Pickle Tannage Rechromage Retannage Using Sertan ALD there is a drastically reduction of the chrome content in waste chrome tanning liquors due to provoke an almost complete chrome exhaustion. Sertan ALD improve the physical resistances of the leather increasing grain flexibility, fullness, softness and also feeling. Guidance dosages and applications: Wet-white tanning: 1-3% on pelt weight Wet-blue tanning: 0,5-1% on pelt weight Vegetable tanning: 0,4-0,6% on pelt weight Wet-blue retanning: 0,5-2% on shaved weight Doubleface retannage: 1,5-2,5% on dry weight In retannage of soft nappa: Add 0,2-0,3 % Formic acid (1:5) and run 10 (ph < 3,5) before addition of X% Sertan ALD (1:3) to obtain a good penetration. Usage:

26 Sertan B Retanning-pretanning chrome and vegetable Solid in powder White to yellowish 3±0,5 Excellent Bag leather Shoe upper Vachetta Sole Belts Lining Pretannage Tannage Retannage Synthetic products and salts. Sertan B in chrome tanned leathers it is specially recommended for light colours or as a retanning agent for white due to it has excellent light fastness and dye levelness. Thanks to its properties Sertan B is recommended for many uses but specially when the leather must have a compact fullness without damaging the grain firmness. When applied in the chrome tannage clearer colour and better chrome dispersion is obtained. Another property worth to emphasize is its low influence in the dyeing yield. Sertan B has a strong dispersing power regarding to vegetable tannins or combined tannins with high molecular weight or volume. Sertan B in vegetable tannage produces a bleaching effect stains from the leather. It can be added with the extracts, at the end of the tannage, as a washing after tanning or at the beginning of the retannage. Due to its acid ph, it is suitable for pretanning for vegetable tannage. When added at the end of vegetal tannage produces good tannin fixation and greater bath exhaustion. Sertan B has light fastness and provides fullness, firmness, feel and softness to the grain. It also improves buffing of vegetal tanned skins. Guidance dosages and processes: In chrome leathers: In tannage: Use 0,5-3% with the chrome In retannage: Use 3-6% In retannage: combined with extracts: Use 25-30% of extracts weight to ensure a correct dispersion and penetration of them. In Vegetable leathers: In pretannage: Use 1,5-3% In tannage: Replace 25-30% of extracts with Sertan B After tannage: Add 0,5-3 % on pelt weight, 1 or 2 hours before finishing the process. It can be also applied as a washing after tanning in a fresh bath.

27 In chrome tannage: Example of application: (% on pelt weight) Pickle float 80% Chrome 33 6% Sertan B 1,5% run 15 Antibac RC 0,15% run 45 till full penetration Omplex M 0,9-1,2% run 8h PH=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile In chrome retannage: After neutralization ph 4,8-5,2 (% on shaved weight) Water at 35ºC 100% Sertan RC or RR 5% run 30 Sertan B 4 5% run 30 Continue with the retannage In chrome retannage with extracts: After neutralization ph (% on shaved weight) Water at 35ºC 100% Sertan RC or RR 5% run 30 Sertan B 1 5% Sertan VGH or VGM 5% Sertan DC 3% run 30 Continue with the retannage-dyeing In vegetable pretannage: Example for sole leather: Drain pickle bath 6ºBè ph 4-4,2 (% on pelt weight) without float Sertan B 4% run 60 Water at 30ºC 20% run 20 Continue with the tannage In vegetable tannage: Example for sole leather: Pickle bath 6ºBè 20% ph 4-4,2 (% on pelt weight) Sertan BSP 3,5% Sertan VGH 3,5% run 120 Sertan VGH 7% Sertan B 6% Ecotint N 1,5% Sertan VGH 5% run 4h Sertan BSP or ND 3,5% Sertan VGH 10% Sertan B 4,5% Seroil MS 0,7% run till Run until getting 38-40ºC inside of the drum. At the end of the tannage: (same bath): Example for sole leather: Add Water at 30ºC 50% Sertan B 1% run 120 Pile up 24-48h, set-out, shave. At the end of the tannage: (new bath): Example for sole leather: Water at 30ºC 80% Sertan B 0,7% run 120 Pile up 24-48h, set-out, shave In the vegetable retannage: Example for sole leather: (% on shaved weight) Load the drum (15-17 rpm) run 10 (For regularize the humidity) Without float Sertan B 1,5% run 10 Serfix MP 2% run 40 Seroil PB 0,6% Seroil VS 1% run 90 Pile up & mechanize as usual. Sertan B

28 Sertan BM Retanning filling and bleaching agent. Solid in powder White to yellowish 5±1 Good Bag leather Shoe upper Lining Retannage Tannage Compound in base urea-phenol and organic products Sertan BM is a synthetic syntan that provides full and compact leathers. Sertan BM when used in chrome leather as a retanning agent gives full leathers with a smooth and closed grain and Improves the buffing ability. Sertan BM is filling and retanning agent for leather with good light fastness and homogeneous colours. Sertan BM in vegetable tanning is a bleaching agent, when used in the final stages of the tanning process. or mixed with the extracts. Guidance dosages and processes: In retanning of chrome leather: Add 4 8 % on shaved weight. In retanning of vegetal chrome leather: 3 5 % on shaved weight. In vegetal leather: 1,5 3,5 % at the end of the tannage. On pelt weight. 4,5 6,5 % with extract. On pelt weight. Example of application: Retanning (% on shaved weight) Process for shoe upper 1,2mm. Water at 35ºC 100% Sertan RC or RR 5% Sertan DC 3 5% Sertan IN 3% Sertan BM 3 5 Sertan VGH/VGM 5% run 30 Dyestuff 3% run 60 Continue with fatliquoring

29 Sertan BSF Synthetic syntan for soft leathers Solid in powder White to yellowish 5±0,5 Excellent Phenol condensate derivative Sertan BSF is a synthetic syntan for soft leathers. Because of its low astringency, for soft leathers, gives good round feel, excellent fullness and homogeneous colour. Used as a tanning agent it gives soft leathers with very eaven colour. In the retanning process for all type of soft leathers, it can be used alone or in combination with vegetable extracts or resins such as Sertan RC, Sertan RR, Sertan D-3, Sertan DC. Using Sertan BSF for manufacturing clothing leathers the fullness and the softness is improved. When is used in the neutralization allows us to obtain a very uniform leather, which makes penetration and distribution of the dye easier and produces a great levelness. It can be added directly into the drum without previous dissolving. Bag leather Shoe upper Upholstery Garment Automotive Lining Rechroming Retanning Tanning Neutralization Guidance dosages and processes: In rechroming: (% on shaved weight) Add 0,5 1,5 % on shaved weight. In retanning of chrome leather: (% on shaved weight) Add 3 6 % on shaved weight. In retanning of vegetal-chrome leather: (% on shaved weight) 2,5 4 % on shaved weight. In retannage combined with extracts: (% on shaved weight) Use 25-30% of extracts weight to ensure a correct dispersion and penetration of them. In synthetic tannage: (% on pelt weight) Use up to 50% In vegetal leather: (% on pelt weight) In the main tannage: Replace up to 50% of extracts with Sertan BSF In the retannage: 1 2 % at beginning of the process.

30 In rechroming: (% on shaved weight) After washing Water at 38ºC 150% Formic acid 0,3% run 15 Chrome 33 5% Sertan BSF 2% run 30 Seroil FO 3% run 30 In chrome retannage: After neutralization ph 4,8-5,2 (% on shaved weight) Water at 35ºC 100% Sertan RC or RR 5% run 30 Sertan BSF 4,5% run 30 Continue with the retannage In chrome retannage with extracts: After neutralization ph 4,8-5,2 (% on shaved weight) Water at 35ºC 100% Sertan RC or RR 5% run 30 Sertan BSF 4% SertanVGH/VGM5% Sertan D-3 3% run 30 Continue with the retannage-dyeing In neutralization: (% on shaved weight) Process for items shoe upper 1,4 mm. Water at 35ºC 150% Neutriser N 2% Ecotint N 2% Sertan BSF 2% run60-90 In vegetable tannage: Example for vachetta: Pickle bath 6ºBè 80% ph 3,8-4 (% on pelt weight) Sertan RP 3% run 60 SERTAN VGH 12% Sertan BSF 6% run 60 Ecotint N 1,5% Sertan VGH 10% Sertan BSF 6% Sertan RD 3% Seroil MS 0,7% run 180 till Water at 40ºC Oxalic acid run 30 Drain Water at 40ºC 300% run 10 Drain Horse up 24-48h Sam Shave At the end of the tannage: (same bath): Example for sole leather: Add Water at 30ºC 50% Sertan BSF 2% run 120 Pile up 24-48h, set-out, shave. At the end of the tannage: (new bath): Example for sole leather: Water at 30ºC 80% Sertan BSF 1-2% run120 Pile up 24-48h, set-out, shave In the vegetable retannage: Example for sole leather: (% on shaved weight) Load the drum (15-17 rpm) run 10 (For regularize the humidity) Without float Sertan BSF 1,5% run 10 Serfix MP 2% run 40 Seroil PB 0,6% Seroil VS 1% run 90 Pile up & mechanize as usual. In synthetic tannage chrome free: Example for vachetta type: Pickle bath 6ºBè 80% ph 3,8-4 (% on pelt weight) Sertan RP 3% run 60 Sertan BSF 20% run 60 Sertan BSF 30% Sertan D-3 6% Seroil MS 1% run 180 till Water at 40ºC Oxalic acid run 30 Drain Water at 40ºC 300% run 10 Drain Horse up 24-48h Sam Shave Sertan BSF

31 Sertan BSP Pretanning and Bleaching agent for veg tanned and w.b. retanning agent Solid in powder White to yellowish 2,5±0,5 Excellent Bag leather Shoe upper Upholstery Lining Pretannage Rechroming Retanning Tanning Phenol condensate derivative Sertan BSP can be used as a pretanning agent in any kind of vegetable tanned leather, and in the preparation of quick sole leather tannage. Flobaphenes of vegetable tannins have a better penetration and distribution, penetration time of tannins is reduced, and production is increased. Vegetal tannins fixing agent and vegetal tanned leather bleaching agent, special for sole and case hide. Clear and uniform leathers are obtained. Sertan BSP is a synthetic syntan for white leathers. Because of its low astringency, for leathers, gives good round feel, excellent fullness and homogeneous colour. In the retanning process for all type of soft leathers, it can be used alone or in combination with vegetable extracts or resins such as Sertan RR, Sertan D-3, Sertan DC. Using Sertan BSP for manufacturing clothing leathers the fullness and the softness is improved. It can be added directly into the drum without previous dissolving. % on lime weight: Bovine hides, in sole leather tannage: 1,5-3% Cow hides, in quick vegetable tannage, in drum: 3-5% Sheepskins for lining: 2,5-4% Example for sole leather (Butt): Drain pickle bath 6ºBè ph 4-4,2 (% on pelt weight) Without float Sertan BSP 4% run 60 Water at 30ºC 20% run 20 Sertan VGH 7% run 120 Sertan VGH 7% Sertan BSP 6% Ecotint N 1,5% Sertan VGH 5% run 4h Sertan VGH 10,5% Sertan BSP 4,5% Seroil MS 0,7% run till Run until getting 38-40ºC inside of the drum. Example for vachetta (Belie): Pickle bath 6ºBè ph 4-4,2 (% on pelt weight) Water at 6ºBè ph 4-4,2 20% Sertan BSP 3% run 30 Sertan VGH 10% run 60 Sertan VGH 10% run 60 Sertan VGH 10% run 5h Night in bath Water at 25ºC 50% Sertan BSP 0,7% run 30 Horse up 24-48h Set out Shave In rechroming: (% on shaved weight) After washing Water at 38ºC 150% Formic acid 0,3% run 15 Chrome 33 5% Sertan BSP 2% run 30 Seroil FO 3% run 30 In chrome retannage: After neutralization ph 4,8-5,2 (% on shaved weight) Water at 35ºC 100% Sertan RR 5% run 30 Sertan BSP 4,5% run 30 Continue with the retannage

32 Sertan CH Pretanning - retanning agent based on chrome Solid in powder Green Tanning oxides: 10-12% 3,5±0,5 Excellent Cationic Bag leather Shoe upper Upholstery Garment Gloving Automotive Lining Rechroming Pretanning Tanning Synthetic organo-chrome. Sertan CH is applied in pretanning and retanning for all kind of leathers, semichrome or chrome. Sertan CH is specially designed to manufacture leathers whenever fullness and thickness must be increased, without character modification when is chrome tanned or giving a chrome tanned leather character when is pretanning semichrome, obtaining also smooth skins with fine and flat grain. It is recommended for all soft nappa leathers. It hardly modifies the dyeing intensity, and higher colour levelness and distribution is obtained. Sertan CH can be added directly into the drum without previous dissolving. Guidance dosages and processes: Pretannage tannage (% on pelt weight) Use up to 3% Rechromage(% on shaved weight) Replace up to 50% of chrome Example of application: In pretannage(% on pelt weight) Process for sheep nappa leather. After pickle ph=2,8-3,0 Pickle float 25ºC 80% Sertan CH 2% run 30 Sercrom33 5% run 15 Antibac RC 0,2%run 45 Omplex C 0,6%run 7h PH=3,8-4,0 Drain - Unload In tannage(% on pelt weight) Process for sheep nappa leather. After pickle ph=2,8-3,0 Pickle float 25ºC 80% Sertan CH 2% Sercrom33 5% run 15 Antibac RC 0,2%run 45 Omplex C 0,6%run 7h PH=3,8-4,0 Drain - Unload In retannage(% on shaved weight) Process for cattle leather. After washing ph=3,2-3,5 Water at 38ºC 150% Chrome 33 2% Sertan CH 2% run 10 Seroil FO 1-2% run 50 Omplex C 0,45% run 30 Automatic over night 10 /h PH=3,8-4,0

33 Sertan CO Pretanning - retanning agent based on chrome Solid in powder Green Tanning oxides: 10-12% 3,0±0,5 Excellent Cationic Bag leather Shoe upper Upholstery Garment Gloving Automotive Lining Rechroming Pretanning Tanning Synthetic organo-chrome. Sertan CO is applied in pretanning and retanning for all kind of leathers, semichrome or chrome. Sertan CO is specially designed to manufacture leathers whenever fullness and thickness must be increased, without character modification when is chrome tanned or giving a chrome tanned leather character when is pretanning semichrome, obtaining also smooth skins with fine and flat grain. It is recommended for all soft nappa leathers. It hardly modifies the dyeing intensity, and higher colour levelness and distribution is obtained. Sertan CO can be added directly into the drum without previous dissolving. Guidance dosages and processes: Pretannage tannage (% on pelt weight) Use up to 3% Rechromage(% on shaved weight) Replace up to 50% of chrome Example of application: In pretannage(% on pelt weight) Process for sheep nappa leather. After pickle ph=2,8-3,0 Pickle float 25ºC 80% Sertan CO 2% run 30 Sercrom33 5% run 15 Antibac RC 0,2%run 45 Omplex C 0,6%run 7h PH=3,8-4,0 Drain - Unload In tannage(% on pelt weight) Process for sheep nappa leather. After pickle ph=2,8-3,0 Pickle float 25ºC 80% Sertan CO 2% Sercrom33 5% run 15 Antibac RC 0,2%run 45 Omplex C 0,6%run 7h PH=3,8-4,0 Drain - Unload In retannage(% on shaved weight) Process for cattle leather. After washing ph=3,2-3,5 Water at 38ºC 150% Chrome 33 2% Sertan CO 2% run 10 Seroil FO 1-2% run 50 Omplex C 0 45% run 30 Automatic over night 10 /h PH=3,8-4,0

34 Sertan Melamine retanning agent D3 Solid in powder White to yellowish Resin based on melamine Sertan D3 is a versatile retanning and filling agent for a wide range of leathers. Retanned leathers with Sertan D3 have excellent dyeing ability. The use of this product modifies neither the shade nor the colour intensity. It improves leather fullness and it gets fixed in those parts where the structure is less compact. When used prior the chrome in the retannage fullness and compactness are increased. It can be used in the neutralizing bath with other products of anionic character or mixed with vegetal extracts. 8,5±0,5 Excellent Bag leather Shoe upper Upholstery Garment Rechroming Retanning Tanning Guidance dosages and processes: In retannage: After neutralization ph from 4,8 to 6 Sheep skins for clothing: 2-4% on shaved weight. Cattle footwear: 3-6% on shaved weight. In rechromage: 2-4% depending on the desired article Example of application: In rechromage (% on shaved weight) Process for cattle leather. After washing with TRD 78 Water at 38ºC 200% Sertan D3 4% run 30 Formic acid 0,3% run 20 ph=3,2-3,5 Chrome 33 2% Sertan CO 2% run 10 Seroil FO 1-3% run 50 Bicarbonate 0,5% run 30 Automatic over night 10 /h PH=3,8-4,0 In retannage(%on shaved weight) After neutralization ph=5,2-5,5 Water at 35ºC 120% Sertan RC or RR 5% run 40 Sertan D3 3% Sertan BSF 2% Sertan IN 2% Sertan VGH/VGM 4% run 30 Dyestuff 3% run 60 Continue as usual In retannage(%on shaved weight) Focusing on empty parts After neutralization ph=5,2-5,5 Water at 35ºC 120% Sertan RC or RR 5% run 30 Sertan BSF 2% Sertan IN 2% Sertan VGH/VGM 4% Dyestuff 3% run 40 Water at 35ºC 60-80% Sertan D3 3% run 60 Continue as usual

35 Sertan DC Dicyandiamide retanning agent Solid in powder Light brown Resin based on dicyandiamide Sertan DC is used to fill the empty and frayed structures of the hides, giving good fullness. Sertan DC gives levelled dyeing. Sertan DC improves the frizzing problem because it gives elasticity and fixes the grain. Sertan DC is compatible with anionic products such as dyestuffs, synthetic and vegetable tanning agents, etc. 9±0,5 Good Guidance dosages and processes: It s recommended to add the Sertan DC after the Neutralization before the retanning. For all kind of leathers, always use 2,0-5,0% Example of application: Retanning (%on shaved weight) Process for cow upper leather 1,6mm. Bag leather Shoe upper Upholstery Garment Automotive Retanning Water at 35ºC 120% Sertan RC or RR 5% run 40 Sertan DC 3% Sertan BN 2% Sertan IN 2% Sertan VGH/VGM4% run 30 Dyestuff 3% run 60 Continue with the fatliquoring.

36 Sertan DCB White dicyandiamide retanning agent Solid in powder White to yellowish Resin based on dicyandiamide Sertan DCB is used to fill the empty and frayed structures of the hides, giving a good fullness. Due to its white colour is ideal for white leather. Sertan DCB because of its nature is very versatile in the application, can be applied prior to chrome in the retannage promoting good fullness and more compactness than when used in the retannage, it can be also used prior to fatliquor once increased the bath prior to fatliquoring. 9±0,5 Excellent Bag leather Shoe upper Upholstery Garment Gloving Automotive Lining Rechromage Retannage Sertan DCB gives a good dyeing levelness. Sertan DCB improves the frizzing problem because it gives elasticity and fixes the grain. For all kind of leathers, always use 2,0-5,0% Example of application: In rechromage (% on shaved weight) After washing ph=3,2-3,5 Water at 38ºC 200% Sertan DCB 4% run 30 Chrome 33 2% Sertan CO 2% run 10 Seroil FO 1-3% run 50 Omplex C 0,45% run 30 Automatic over night 10 /h PH=3,8-4,0 In retannage(%on shaved weight) After neutralization ph=5,2-5,5 Water at 35ºC 120% Sertan RC or RR 5% run 40 Sertan DCB 3% Sertan BN 2% Sertan IN 2% Sertan VGH/VGM 4% run 30 Dyestuff 3% run 60 Prior to fatliquoring (% shaved weight) After neutralization ph=5,2-5,5 Water at 35ºC 150% Sertan RC or RR 5% run 40 Sertan BN 2% Sertan IN 2% Sertan VGH/VGM4% run 30 Dyestuff 3% run 60 Water at 50ºC 120% Sertan DCB 4% run 10 Continue with the fatliquoring.

37 Sertan Syntan for white ELB Solid in powder White to yellowish 2,5±0,5 Excellent Phenol sulphonic acid condensate Sertan ELB is a bleaching syntan for white, lightfast with different applications fields. It can be used for tanning and bleaching of all kind of leathers. The use in the retanning of chrome tanned leather gives white and full leathers with tight and flat grain with good feeling. At the end of the vegetable tannage for sole and light leathers, Sertan ELB shows a bleaching action on the tannage colour. In vegetable tannage can be added together with the tanning agents in every addition. Percentage refereed to shaved weight: Retanning of chrome leather for white: 6-12% After fixation with formic acid 1,5-2,5% Mixed vegetable retannages : 3-6% In vegetable tannage, it can be added in amount of 1-2% with the extracts mixture or 6-8% at the end of tannage (% on pelt weight). Bag leather Shoe upper Upholstery Garment Gloving Automotive Lining Retanning Tanning

38 Sertan F Retanning filler compound Solid in powder White to yellowish Mixture of organic, inorganic and synthetic compounds Sertan F is an inert product with filling properties, which operates in any ph, settling in the empty leather areas. In leathers with looseness in the bellies, optimum results are obtained combining Sertan F with an acrylic resin (Sertan RC or RR). Hides treated with Sertan F are more compact, in both full grain and split. It does not affect the dye yield, due to it is filler with neutral charge. Sertan F in splits helps the buffing. 6±1 Excellent Bag leather Shoe upper Upholstery Garment Gloving Automotive Lining Dosages for retannage: (% on pared weight) Sertan F Sertan RC or RR Footwear 3-4 % 3-4 % Leather goods 6 % 3 % Suede split 4-6 % 3 % The usual way of adding Sertan F is together with the dye, alone 10 minutes prior fatliquoring with the hot water or in the retannage package. If it is used with resins, it is better to be employed after dyeing, before the last fatting. Retannage

39 Sertan Retanning syntan IN Solid in powder Brown to yellowish 4±0,5 Excellent Bag leather Shoe upper Upholstery Garment Lining Vegetable tannage Retannage Neutralization Mixture of syntans Sertan IN is a general purpose retanning agent for fullness and softness. The resulting leathers have fullness in all the leather structure and in the bellies a pleasant handle and a paler shade is obtained. Due to Sertan IN has a protective action on the leather surface gives a smooth and elastic grain. And can be used in the neutralization as an auxiliary. It is recommended to add a 2-3% of Sertan IN after neutralizing, prior retannage in all articles that are strongly retanned and even more if it is strongly retanned with vegetable tanning agents. Sertan IN can be added with the vegetable tanning agents to disperse them and increase its distribution. Leathers re-tanned with Sertan IN show a fine and tight grain. Guidance dosages and processes: Cow hide 3-10% Sheep skin 2-6% Goat 3-6% In neutralization: (% on shaved weight) Water at 35ºC 150% Neutriser N 2% Sertan IN 2% run Continue with the retannage. Prior retannage (%on shaved weight) After neutralization ph=5,2-5,5 Water at 35ºC 120% Sertan RC or RR 5% run 40 Sertan IN 2-6% run 10 Sertan DC 3% Sertan BSF 2% Sertan VGH/VGM 4% run 30 Dyestuff 3% run 60 Continue with the fatliquoring. Prior retanning package (%on shaved weight) After neutralization ph=5,2-5,5 Water at 35ºC 120% Sertan IN 2-6% run 30 Sertan RC or RR 5% run 30 Sertan DC 3% Sertan BSF 2% Sertan VGH/VGM4% run 30 Dyestuff 3% run 60 Continue with the fatliquoring.

40 Sertan Replacement syntan MC Solid in powder Brownish Resins, replacement syntan and fillers. Sertan MC is used to compact the empty and frayed structures of the hides givi ng good fullness. Sertan MC gives a levelled dyeing. Sertan MC improves the frizzing problem because it has a protective action of the leather surface, gives elasticity and fixes the grain. 5±0,5 Good Bag leather Shoe upper Upholstery Garment Retanning It s recommended to add the Sertan MC after the Neutralization before the retanning or in the retannage package. For all kind of leathers, always use 2,0-5,0% Example of application: Retanning (%on shaved weight) Process for cow upper leather 1,6mm. Water at 35ºC 80% Sertan RC or RR 5% run 30 Sertan MC 4% Sertan BN 2% Sertan VGH/VGM 4% run 30 Dyestuff 3% run 60 Continue with the fatliquoring.

41 Sertan NBR Tamponed retanning agent. Neutralising agent. Solid in powder White to yellowish Highly tamponed synthetic retanning products mixture As retanning and leather de-acidifying agent. It improves the grain fullness, firmness and tightness. As masking agent of chrome salts. 10,5±1 Small leathers Big leathers Retanning Neutralization Basification Guidance dosages and processes: In the chrome basification: 1,5% of Sertan NBR and 0,3% of sodium bicarbonate. In the neutralisation: 2,3% of Sertan NBR and 0,5% of sodium formiate. In the retannage: 4,6% of Sertan NBR

42 Sertan ND Dispersing and dye-levelling agent. Solid in powder Brown to yellowish Naphthalene-sulphonic condensate Sertan ND can be added directly into the drum without previous dissolving. Sertan ND is a dispersing and dye-levelling agent, which makes easier the penetration of the vegetable extracts. It can be used as an auxiliary agent in neutralization and to improve the penetration of the tannins in vegetable tannage or retannage operations. Sertan ND has a strongly anionic character that holds up the fixation of the dye, improving its penetration and levelling. 7,5±0,5 Excellent Any article Retanning Dyeing Tanning vg. Neutralization Guidance dosages and processes: For all kind of compact and soft leathers, always use 1,0-3,0%. In Chrome retannage: Process for cow upper leather 1,6mm. (%on shaved weight) Water at 35ºC 80% Sertan RC or RR 5% run 30 Sertan MC 4% Sertan BN 2% Sertan ND 1,5% Sertan VGH/VGM 4% run 30 Dyestuff 3% run 60 Continue with the fatliquoring. In Dyeing: Process for cow upper leather 1,6mm. (%on shaved weight) Water at 35ºC 80% Sertan RC or RR 5% run 30 Sertan MC 4% Sertan BN 2% Sertan VGH/VGM 4% run 30 Sertan ND 1,5% run 10 Dyestuff 3% run 60 Continue with the fatliquoring. In vegetable tannage: Example for vachetta: Pickle bath 6ºBè 80% ph 3,8-4 (% on pelt weight) Sertan RP 3% run 60 Sertan VGH 12% Sertan BSF 6% run 60 Sertan ND 4% Sertan VGH 10% Sertan BSF 6% Sertan RD 3% Seroil MS 0,7% run 180 till Water at 40ºC Oxalic acid run 30 Drain Water at 40ºC 300% run 10 Drain Horse up 24-48h Sam Shave In neutralization: (% on shaved weight) Water at 35ºC 150% Neutriser N 2% Sertan ND 2% run Continue with wash and retannage.

43 Sertan PAK Tamponed Neutralising / Retanning agent. Solid in powder White to yellowish Highly tamponed synthetic retanning products mixture As retanning and leather de-acidifying agent. It improves the grain fullness, firmness and tightness. As masking agent of chrome salts. 10,5±1 Small leathers Big leathers Retanning Neutralization Basification Guidance dosages and processes: In the chrome basification: 0,5-1,5% of Sertan PAK In the neutralisation: 1-3% of Sertan PAK In the retannage: 2-4% of Sertan PAK

44 Neutriser N Neutralizing agent strongly buffered Solid in powder White to yellowish Containing salts of organic acids Neutriser N is a neutralizing agent synthetic with a strong buffering effect, giving a smooth grain in chrome-tanned leathers. It can be poured directly into the drum without previous dissolving. Its buffering effect raises the ph progressively and moderately. Its gentle affinity to chrome leather gives a tight smooth grain, and its anionic nature gives bright and levelled dyeing. Neutriser N lowers the cationic character of wet blue leathers and facilitates the penetration and dispersion of anionic retanning products without causing any astringency or physical properties loss. 7,5-8,5 Excellent Neutralization (% on shaved weight): For all kind of leathers, always use 1,5-2,5%. Example of application: Small leathers Big leathers Neutralization (% on shaved weight): Process for items shoe upper 1,4 mm. Water at 35ºC 150% Neutriser N 2% run ph 4,6-4,8 Drain Wash Rechroming Neutralization

45 Sertan Liquid melamine POL Fluid liquid Colourless to yellowish Based on modified copolymers Sertan POL is a special copolymer developed to be used as a pretanning agent for vegetable tannage, Wet White and Chrome leathers. It must be dissolved 1:3 before addition into the drum Sertan POL applied in pretanning improves penetration and fixation of tanning agents like chrome, vegetable, aluminium, syntan, etc. 9±0,5 Excellent Bag leather Shoe upper Upholstery Garment Rechromage Pretannage Retannage Usage: Guidance dosages and processes: Vegetable tannage and WW Pretanning (% on pelt weight): For all kind of soft leathers, always use 2-6% after pickle ph=2,7. WB Pre-tanning (% on pelt weight): For all kind of full and soft leathers, always use 0,5-3% after pickle ph=2,7. In chrome pretannage: Example for cattle hide (% on pelt weight) Water at 35ºC and 6ºBè 80% Sodium formate 1% run 30 Formic acid 1% Sulphuric acid 1% run 3h ph=2,8-2,9 Sertan POL 3-6% run Chrome 33 7% run 2h Omplex C 0,7% run 8h In wet white tannage: Example for cattle hide (% on pelt weight) Water at 35ºC and 6ºBè 80% Sodium formate 1% run 30 Formic acid 1% Sulphuric acid 1% run 3h ph Sertan ALD 3% run 3h Sertan POL 3% run 60 Omplex C 0,25% run 3h Over night run 5 /h Next day Antibac RC 0,3% Seroil FO 1-3% Ecotint N 3% run 60 If necessary Bicarbonate X% PH=4-4,5 drain Horse up 24-48H ST=62-68ºC Sam-set Shave In rechroming: Standard process (% on shaved weight) Water at 38ºC 200% TDR-75-E 0,3% Formic acid 0,5% run 30 drain Water at 38ºC 150% Sertan POL 4% run 30 Chrome 33 2% Sertan CS 2% run 40 Neutriser N 1% run 30 Over night 5 /h

46 Sertan Copolymer solution. RPC Fluid liquid Yellowish Copolymers Sertan RPC is a retanning agent based on selected polymers with excellent tightening and compacting properties of all the leather structure, especially in the loose parts of the skin. Even it gives certain fullness it is not designed for this purpose. Its effect becomes most obvious in the retanning of sheepskins or leathers with frayed structures where a significant improvement can be achieved. 9,5±0,5 Excellent In amounts of 4% or higher can be used for compacting leathers of soft nature. When used in combination with Sertan RC or Sertan RR or Sertan RMS the compacting effect and required fullness can be regulated easily. It is very suitable for buffed articles. When used as impregnation resin a tight and plasticized but natural grain appearance is obtained without harming the leather softness. Its use in split or suede promotes a short nap and much closer structure. It increases the reactivity of the grain giving dark colours when top dyeing. Bag leather Shoe upper Upholstery Lining Retannage Impregnation Usage: It is recommended to apply it any stage of the retannage after neutralization process depending on its purpose: For tightening frayed structures or corrected grains: 1-3% in combination with resins like Sertan RC or Sertan RR or Sertan RMS. For compacting soft nature leathers or splits. 3-5% alone. For impregnation, with the fatliquors or after fatliquoring at the end of the process 5 minutes before the formic acid: 0,5-2,5% alone.

47 Sertan Acrylic retanning agent RR Fluid liquid Yellowish 7±1 Excellent Bag leather Shoe upper Upholstery Garment Gloving Automotive Retannage Usage: Polyacrylic resin Retanning and filling of chrome leather. The Sertan RR is applied in retanning and filling of chrome leathers becomes fixed preferably on bellies and on the softest parts of the leather, obtaining hides with good feel, smoothness and resistances. Due to its very soft nature big quantities can be added without harming the softness. In splits and velour, it improves the suede. It can be used before, during and after the dyeing and fatting phases. It can be used as substitute of vegetable and synthetic tannins, principally in articles for white owing to the inoxability of product. Excellent results are achieved in leather with non-compact bellies, combining Sertan RR with a retanning agent of organic nature as Sertan F or Sertan FP. In chromed leather or splits it is recommended to apply it after neutralization process and run 30 to 40 : For all kind of leathers in good condition, always use 2,5 4,5%. For leathers in bad condition or with tendency to looseness use 5-9% Guiding dosages: (% on shaved weight) For cow milled nappa or softy: 5-9 % For cow nappa or upper: 3,5-7 % For sheep garment: 2,5-4 % For sheep nappa or upper: 3,5-5,5 % For sheep or goat suede: 3-5% For lining : 2,5-4,5% For suede split: 2-6 % In Chrome retannage: Process for cattle milled nappa 1,6mm. (%on shaved weight) After neutralization ph 4,8-5,2 Water at 35ºC 80% Sertan RR 3-6% run Sertan IN 4% Sertan BSF 2% Sertan NB 1,5% Sertan VGM 4% run 30 Dyestuff 3% run 60 Continue with the fatliquoring. Prior fatliquorig: Process for buffalo shoe nappa 1,8mm. (%on shaved weight) After retannage same bath + Water at 55ºC 80% Sertan FP 3-4% Sertan RR 2-5% run 20 Seroil TTK 2% Seroil FO 2% Seroil L-2 3% Seroil PLS-N 3% run 60 Continue with the fixation.

48 Sertan VGH Extract of universal use Solid in powder Brown 4,0±0,5 Pure natural tannins Sertan VGH is a vegetable extract with excellent filling power, resulting in a light cream coloured leather, which is easy to dye and possesses a good light fastness. In the retanning of chrome tanned leathers provided leathers are in soft and firm versions. Sertan VGH can be used for the manufacture custom articles like sole, vachetta... etc as well as for car upholstery leather, shoe leather, furniture upholstery leather or leather clothing. Sertan VGH provides good fullness with an excellent firm grain, consequently provides a better buffing and embossing. It is adequate for tanning and retanning in whatever formulation and system (drums, pits or paddles). It is recommended for the vegetable-aluminium process for the production of chrome free leather. Any article Guidance dosages and applications: Tanning Retanning - As initial tanning extract for vegetable leathers, use from 5 to 10% on the limed weight. - As the only tanning extract for soles, use from 30 to 40% on the limed weight. - For pure vegetable and light soles, use from 20 to 30%. - In the retanning of chrome tanned leathers, especially in light dyeings, use from 5 to 20% on the shaved weight

49 Sertan VGM Retanning agent containing natural tannins Solid in powder Brown Tanning-retanning agent based on natural and synthetic tanning agents. Sertan VGM is a tanning or retanning agent with medium penetrating ability, with excellent filling power. Due to its good dispersion. It replaces advantageously the effect of natural tannins with no grain overtannage danger reducing the risk of looseness that can be provoked by the custom vegetable tanning agents. 4,0±0,5 Small leathers Big leathers When used at the end of the retannage or as a final top gives burnished effect and improves the polishing. Guidance dosages and processes: Standard fullness use in any case from 4-8% In vegetalized or semicrome articles use from 8 to 15% In retannage: Vegetalized cow hide mm (%on shaved weight) Retanning Veg. tannage Water at 35ºC 300% TRD-78-E 0,3% run 20 Drain Water at 35ºC 80% Sertan PAK 4% Sodium formate 1% run 80 Water at 35ºC 70% Sertan RR 5% run 20 Seroil TTK 1 5% run 20 Sertan VGM 15% Seradye X% run Water at 50ºC 50% Seroil L 3% Seroil P 6% run 60 Continue with the fixation.

50 Sertan WBL Bleaching agent Solid in powder Whitish 2,5±0,5 Very good Bag leather Shoe upper Gloving Lining Retanning Sertan WBL is a bleaching agent to improved the quality of pastel shades and white articles. Using Sertan WBL you will obtain a white leather and meanwhile you are reducing the supply of white pigment or titanium dioxide, and at the same time you can achieve a hight quality article. Sertan WBL is very suitable for use in wet-blue leathers after shaving machine. In the initial washing with acid and sulfactant (acid ph). Or it can be applied in neutralization s bath (ph alkaline) after Sodium bicarbonate, for example. A long running time increases the effectiveness of the product without causing prejudices the quality of the grain. Washing after shaving (% on shaved weight): 200% Water 35ºC 0,5% Formic acid 0,5% TRD % Sertan WBL run In neutralization (% on shaved weight): For gloves : 200% Water 35ºC 2% Sodium formiate run 30 1,5% Sodium bicarbonate run % Sertan WBL run Or auto overnight

51 Serfix MF-5 Bleaching and fixing product for vegetal tanning Solid in powder White to brownish Synthetic inorganic and organic salts Vegetal tannins fixing agent and vegetal tannend leather bleaching agent, special for sole and case hide. Clear and uniformly presented leathers are obtained 2,0±0,3 Sole Retanning Once tanned and set-out, 2-4 % Serfix MF-5 on shaved weight or pelt weight is added bathless. Together with Serfix MF-5 is recommended to use a 1,5% of Seroil VS and 0,5% of Seroil PB to improve feeling, inoxidable clear colour and also a smoother and elastic grain that avoids grain breakage when to hide is folded. Example for application: Proces for sole leather,cow: Drain pickle bath 6ºBè ph4-4,2 (% on pelt weight) Sertan RP 4% Water at 30ºC 20% Sertan VGH 10% run 4h. Sertan ND 4% Sertan VGH 12% run 4h. Sertan ND 4% Sertan VGH 12% Seroil MS 0,7% run till Run until getting ºC inside tof the drum. Water at 30ºc 50% Sertan X 0,7% Pile up 24/48h,set-out,shave. (% on shaved weight) Load the drum (15-17 rpm) Run 10 (For regularize the humidity. Without float. Seroil VS (1:2) 1,5% run 60 Serfix MF-5 2% run 120 Pile up &mechanize as usual.

52 Fatliquoring

53 FATLIQUORS CRUDE LIGHT FASTNESS Seroil PB GOOD Raw neatsfoot type oil SULPHATED LIGHT FASTNESS Seroil PLSN GOOD Soft hides with fullness and nice feel SULPHITED LIGHT FASTNESS Seroil UMR GOOD Very soft low dye shade reduction. Seroil MS GOOD Universal. Very suitable for vegetable tanned leathers Seroil SU VERY GOOD Sulphited fish oil deodorized and unoxidable Seroil P GOOD High performance fatliquor Seroil TTK EXCELLENT Very good body neither loosness nor dye shade reduction Seroil CMT GOOD Extremely softness with light weight and surface feeling Seroil G GOOD Soft, light fastness, warm surface without any smell. PHOSPHORIC ESTER LIGHT FASTNESS Seroil FO EXCELLENT Soft, light weight, stabilizes any fatliquoring mixture Seroil FE EXCELLENT Soft, light weight, stabilizes any fatliquoring mixture Seroil SPC EXCELLENT Auxiliary penetration fatliquor of universal use ESPECIAL LIGHT FASTNESS Seroil BL EXCELLENT For white leathers, doubleface leathers and furriery in general Seroil CL EXCELLENT Leathers with very good lubrication, low weight, Seroil JP VERY GOOD Waxy softness, surface touch with some water repellence Seroil L GOOD Auxiliary feeling agent, suitable for tanning baths (soft wet-blue) Seroil L-2 GOOD Auxiliary feeling agent Seroil LAN MEDIUM lanoline emulsion, slightly water repellent Seroil MVV GOOD Special for vegetable tanned leathers Seroil SCB EXCELLENT Cationic effect Seroil VS EXCELLENT Stable in pre-tanning vegetal baths. Special sole leathers Seroil WPH VERY GOOD Waterproof leather fatliquor Seroil WPS VERY GOOD Waterproof leather fatliquor

54 Seroil BL Synthetic fatliquor Fluid to viscous oil Whitish to yellowish 7-8 Excellent Fur leather Upholstery Garment Gloving Automotive Pretannage Prefatliquoring Retannage Fatliquoring Usage: Based on synthetic fatty materials Seroil BL is a unoxidable fatliquor odourless. Therefore, it is especially suitable for white leathers, doubleface leathers and furriery in general. When used in tanning baths it improves bleaching and wool cleaning. Seroil BL is a fatliquor designed for the manufacture of top quality leather, producing leathers with tight grain, springy handle, light weight and silky feel; When used in buffed articles shine suede and nubuck are achieved as well. It stabilizes the fatliquor emulsions and ensures an homogeneous fatliquoring in the three dimensions of the skin, mostly due to its excellent properties of natural fat redistribution. Seroil BL is a versatile product because of its good stability to acid and to electrolytes, permits it to be applied in several steps of the production process, as pre-fatting fatliquor in pickling, retanning floats etc... It can be used in any proportion, without any danger of greasy feel or spew effect. Guidance dosages and applications: In pickle bath:(%on pelt weight) 0,5-1,5% of Seroil BL before or after the acid. Fatliquoring double-face: (1 skin 10L) Water at 55ºC 5-7 g/l Seroil BL 3-6 g/l Seroil TTK 3-6 g/l Seroil L run continue as usual Fatliquoring for garment nappa: Water at 55ºC 150% Seroil BL 8% Seroil CMT 4% run 90 Formic acid 1% run 30 Continue as usual

55 Seroil CL Sulfoester derivative emulsion Fluid milky oil Whitish to yellowish 7-8 Excellent Any article Pickle Tannage Rechromage Fatliquoring Topping Usage: Based on sulfoester derivatives and others. Seroil CL is an exceptionally versatile product because of its excellent stability to acid and to electrolytes. Its good penetration and anchoring allows it to be mixed with any fat-liquor mixture. Can be applied in pickle prior tannage to improve the wet-blue softness, after chrome in the tannage or retannage of any kind of leathers, being also suitable for aluminium tannage in fur leather in general and double-face in particular. Leathers with very good lubrication, low weight, cotton wool like handle with good run are obtained. When applied in fur leather the hair remains clear of fat because of Seroil CL has no affinity for the hair. It is also suitable as a brush-on fatliquor. Suitable for tanning baths. Guidance dosages in pickle and tannage: (% on pelt weight) Cattle upper leather 0,5-1% Upholstery leather 1-3% Cattle splits 1-3% Sheep and goat leather 1-3% Pig skins 2-4% Fur leather 2-12 g/l Chrome tannage for cattle upper: Water at 20ºC 40% Salt 5% Seroil CL 0,8% run 20 Formic acid 0,9% run 20 Sulphuric acid 0,9% run 120 ph=3 Chrome 33 6% run 15 Antibac RC 0,15% run 45 till full penetration Omplex M 1,1% run 8h ph=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile Chrome tannage for cattle upholstery: Water at 20ºC 50% Salt 5% Seroil CL 3% run 20 Formic acid 0,5% run 20 Sulphuric acid 0,5% run 120 ph=3.7 Sertan ALD 0,5% run 30 Chrome 33 5% run 15 Antibac RC 0,15% run 45 till full penetration Omplex C 0,75% run 8h ph=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile

56 Chrome tannage for sheep: Water at 20ºC 150% Salt 12% Seroil CL 3% run 20 Sertan PAC 2% run 40 Formic acid 0,75% run 30 ph=3,7 Chrome 33 5% run 15 Antibac RC 0,15% run 45 till full penetration Omplex C 0,75% run 8h ph=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile Pickle for fur goat kids: (Process in paddle) Water at 30ºC Salt (4.5-5ºBé) 50gr/l Seroil CL 3gr/l run 60 Formic acid 8ml/l run 60 Rest in bath overnight Next day run 15 Unload - Pile Chrome tannage for double face: (Process in paddle) Water at 30ºC Salt (5,5-6ºBé) 60gr/l Seroil CL 3gr/l Seroil TTK 4gr/l run 60 Formic acid 0,8ml/l run 20 ph=3,2-3,3 Chrome 33 18gr/l run 4h Rest in bath overnight Sodium formate 3gr/l run 60 Sodium bicarbonate 3gr/l run 120 ph=3,8-4 Unload - Pile - Rest 24-48h Clean flesh side Guidance dosages for Brush-on: Exotic and lamb types: Seroil CL ml Water at 40ºC ml 1000 Tannage for fur goat kids: (Process in paddle) Water at 30ºC Salt (4ºBé) 40gr/l Sertan AL 6gr/l run 90 Sertan CA 4gr/l run 120 Seroil CL 4gr/l Seroil FO 2gr/l run 60 Rest in bath overnight Sodium bicarbonate x gr/l run 120 ph=3,6-3,7 Unload - Pile This product is an emulsion. So, it separes or could be separated. Shake it strongly before use. Differences in viscosity can be also happen. Product separation or differences observed in viscosity do not affect the product quality. Consequently, we cannot accept claims for these change. Seroil CL

57 Seroil CMT Very soft and light weight fatliquor Fluid oil Transparent brownish 7±8 Good Usage: Upholstery Garment Gloving Automotive Pickle Tannage Rechromage Fatliquoring Based on a balanced mixture of synthetic and natural oils Seroil CMT is a fatliquor developed for giving extremely softness with light weight and surface feeling without fish smell. These characteristics make it ideal for being used as a unique fatliquor. The complete relaxation of the fibres causes excellent milling properties. It can be mixed with anionic fatliquors being also compatible with anionic products such as dyestuffs, synthetic and vegetable tanning agents, etc The earlier Seroil CMT is applied the greater softening effect is achieved. Applying it in pickle or tannage will promote softness. It is also suitable as a brush-on fatliquor. Suitable for tanning baths. Guidance dosages and applications: As a unique fatliquor: (% on shaved weight) For suede split 3,5 to 6,5% For softy nappa 7 to 12% For garment nappa 8 to 16% For upholstery 10 to 18% For double face 10 to 20 gr/l Guidance combinations by parts: (Parts based on the total % of fat) Shoe upper: 2/4 parts of Seroil CMT 2/4 parts of Seroil TTK Bag leather: 1/4 parts of Seroil CMT 3/4 parts of Seroil TTK Upholstery: 1/2 parts of Seroil CMT 1/2 parts of Seroil TTK Milled nappa: 3/8 parts of Seroil CMT 4/8 parts of Seroil TTK 1/8 parts of Seroil L-2 Garment nappa: 5/6 parts of Seroil CMT 1/6 parts of Seroil TTK Goat garment nappa: 5/8 parts of Seroil CMT 3/8 parts of Seroil TTK Sheep nappa: 1/2 parts of Seroil CMT 1/2 parts of Seroil TTK Vachetta: 2/3 parts of Seroil CMT 1/3 parts of Seroil TTK they last minimum 6 months.

58 Guidance dosages in pickle and tannage: (% on pelt weight) Cattle upper leather 0,5-1% Upholstery leather 1-3% Cattle splits 1-3% Sheep and goat leather 1-3% Pig skins 2-4% Chrome tannage for cattle upper: Water at 20ºC 40% Salt 5% Seroil CMT 1-2% run 20 Formic acid 0,9% run 20 Sulphuric acid 0,9% run 120 ph=3 Chrome 33 6% run 15 Antibac RC 0,15% run 45 till full penetration Omplex M 1,1% run 8h ph=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile Chrome tannage for cattle upholstery: Water at 20ºC 50% Salt 5% Seroil CMT 1-3% run 20 Formic acid 0,5% run 20 Sulphuric acid 0,5% run 120 ph=3.7 Sertan ALD 1-3% run 30 Chrome 33 5% run 15 Antibac RC 0,15% run 45 till full penetration Omplex C 0,75% run 8h ph=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile Chrome tannage for sheep: Water at 20ºC 150% Salt 12% Seroil CMT 1-3% run 20 Sertan PAC 2% run 40 Formic acid 0,75% run 30 ph=3,7 Chrome 33 5% run 15 Antibac RC 0,15% run 45 till full penetration Omplex C 0,75% run 8h ph=3,7-3,9, boiling test>100ºc Rinse - Unload - Pile Pickle for fur goat kids: (Process in paddle) Water at 30ºC Salt (4,5-5ºBé) 50gr/l Seroil CMT 3gr/l run 60 Formic acid 8ml/l run 60 Rest in bath overnight Next day run 15 Unload - Pile Tannage for fur goat kids: (Process in paddle) Water at 30ºC Salt (4ºBé) 40gr/l Sertan AL 6gr/l run 90 Sertan CA 4gr/l run 120 Seroil CMT 8gr/l Seroil FO 2gr/l run 60 Rest in bath overnight Sodium bicarbonate x gr/l run 120 ph=3,6-3,7 Unload - Pile Chrome tannage for double face: (Process in paddle) Water at 30ºC Salt (5.5-6ºBé) 60gr/l Seroil CMT 5gr/l Seroil TTK 2gr/l run 60 Formic acid 0 8ml/l run 20 ph=3,2-3,3 Chrome 33 18gr/l run 4h Rest in bath overnight Sodium formate 3gr/l run 60 Sodium bicarbonate 3gr/l run 120 ph=3,8-4 Unload - Pile - Rest 24-48h Clean flesh side Guidance dosages for Brush-on: Exotic and lamb types: Seroil CMT ml Water at 40ºC ml 1000 Seroil CMT

59 Seroil FO Phosphoric ester fatliquor Fluid oil Transparent yellowish Based on phosphoric ester Fatliquor of general use for any kind of hides, chromed, vegetal tanned or mixed. Due to its high stability improve the stability, distribution and penetration of any fatliquoring mixture. Being completely synthetic, the fat repousse risk is fully removed and it is also unoxidable and unrancied. Its good penetration and anchoring allows it to be mixed with any fat-liquor mixture. 7-8 Excellent Can be applied in pickle prior tannage to improve the wet-blue softness, after chrome in the tannage or retannage of any kind of leathers, being also suitable for aluminium tannage in fur leather in general and double-face. Leathers with very good lubrication, low weight, smooth and dry feeling are obtained. Suitable for tanning baths. Bag leather Shoe upper Upholstery Garment Gloving Automotive Lining Rechromage Pretannage Prefatliquoring Retannage Fatliquoring Tannage Usage: Guidance dosages and applications: Upholstery: Add 3-5% of Seroil FO in the main fatliquoring. Softy aniline: Add 4-6% of Seroil FO in the main fatliquoring. Example for garment nappa: Water at 55ºC 150% Seroil FO 5% Seroil TTK 4% Seroil L-2 4% run 90 Formic acid 1% run 30 Continue as usual In tannage(% on pelt weight) Process for sheep nappa leather. After pickle ph=2,8-3,0 Pickle float 25ºC 80% Sertan CO 2% Sercrom33 5% run 15 Seroil FO 1-3% run 15 Antibac RC 0,2% run 45 Omplex C 0,6% run 7h Automatic over night 10 /h PH=3,8-4,0 Drain - Unload In rechromage (% on shaved weight) Process for cattle leather. After washing ph=3,2-3,5 Water at 38ºC 150% Chrome 33 2% Sertan CO 2% run 10 Seroil FO 2-4% run 50 Omplex C 0,45% run 30 Automatic over night 10 /h PH=3,8-4,0 Drain

60 Seroil FE Phosphoric ester fatliquor Fluid oil Transparent yellowish 7-8 Excellent Based on phosphoric ester Fatliquor of general use for any kind of hides, chromed, vegetal tanned or mixed. Due to its high stability improve the stability, distribution and penetration of any fatliquoring mixture. Being completely synthetic, the fat repousse risk is fully removed and it is also unoxidable and unrancied. Its good penetration and anchoring allows it to be mixed with any fat-liquor mixture. Can be applied in pickle prior tannage to improve the wet-blue softness, after chrome in the tannage or retannage of any kind of leathers, being also suitable for aluminium tannage in fur leather in general and double-face. Leathers with very good lubrication, low weight, smooth and dry feeling are obtained. Suitable for tanning baths. Bag leather Shoe upper Upholstery Garment Gloving Automotive Lining Rechromage Pretannage Prefatliquoring Retannage Fatliquoring Tannage Usage: Guidance dosages and applications: Upholstery: Add 3-5% of Seroil FE in the main fatliquoring. Softy aniline: Add 4-6% of Seroil FE in the main fatliquoring. Example for garment nappa: Water at 55ºC 150% Seroil FE 5% Seroil TTK 4% Seroil L-2 4% run 90 Formic acid 1% run 30 Continue as usual In tannage(% on pelt weight) Process for sheep nappa leather. After pickle ph=2,8-3,0 Pickle float 25ºC 80% Sertan CO 2% Sercrom33 5% run 15 Seroil FE 2-4% run 15 Antibac RC 0,2% run 45 Omplex C 0,6% run 7h Automatic over night 10 /h PH=3,8-4,0 Drain - Unload In rechromage (% on shaved weight) Process for cattle leather. After washing ph=3,2-3,5 Water at 38ºC 150% Chrome 33 2% Sertan CO 2% run 10 Seroil FE 3-5% run 50 Omplex C 0,45% run 30 Automatic over night 10 /h PH=3,8-4,0 Drain - Unload

61 Seroil G Natural-synthetic fatty materials Fluid oil Transparent brownish 7,5-8,5 Good Bag leather Shoe upper Milled nappa Industrial gloves Split Balanced mixture of synthetic and natural oils. Seroil G gives excellents results concerning softeness, light fastness, warm surface feeling without any smell. These characteristics make it ideal for being used as a unique fatliquor for white or clear color leather. With Seroil G has a very good penetration and dispersion followed of a complete exhaustion of the fatliquoring baths. Seroil G do not alters the dye shade. The complete relaxation of the fibers causes excellent milling properties. It can be mixed with anionic fatliquors being also compatible with anionic products such as dyestuffs, synthetic and vegetable tanning agents, etc. The recommended rates depend on the articles: For industrial gloves 4 to 8% on shaved weight. For upholstery 10 to 18% on shaved weight. For suede split 3,5 to 6,5 % on shaved weight. For softy nappa 7 to 9% on shaved weight. Rechromage Prefatliquoring Fatliquoring Usage:

62 Seroil JP Synthetic fatliquor Pasty oil White to yellowish 7-8 Very good Waterproof level: Low Bag leather Shoe upper Upholstery Garment Gloving Automotive Fatliquoring Based on synthetic oils and waxes. Seroil JP is a fatliquor product that gives to the leather smoothness, softy feel and very light waterproof effect. Light fastness and an excellent colour-levelness power are some of its additional properties. Also it improves the tear and grain-bursting resistance. Seroil JP does never cause the appearance of fatty spews even when used at high rates. Thanks to its special composition, it can be used as unique fatliquor for all kind of items: nappa, suede, gloving leather, double face, upper leather, etc It is moreover advisable to use it as an ingredient in conventional anionic fatliquoring, to improve the surface feel and the resistances. Guidance dosages and applications: Preparation of the emulsion: Add 3-4 parts of water (heated at 50-55ºC) to I part of Seroil JP. The resulting emulsions is perfectly stable. Example: Clothing nappa (direct process): After Neutralization: 4-5% Seroil JP In main fatliquor bath: 6-10% Seroil JP Usage: This product is an emulsion. So, it separes or could be separated. Shake it strongly before use. Differences in viscosity can be also happen. Product separation or differences observed in viscosity do not affect the product quality. Consequently, we cannot accept claims for these change. they last minimum 6 months.

63 Seroil L Non-ionic stabilized lecithin Pasty oil Yellowish 7-8 Good Non-ionic Bag leather Shoe upper Upholstery Garment Gloving Automotive Rechromage Pretannage Prefatliquoring Retannage Fatliquoring Usage: Fatliquoring oil based on lecithin Seroil L can be used in all kind of soft leathers where a pleasant feel and inner mellowness is required. Seroil L is fatliquoring oil based on lecithin, stable to acid baths and the electrolytes. Therefore, it can be used without fear in any stage of the process, can be added in pickle, tannage, in tanning baths of chrome or vegetables, in rechroming, in neutralization, or together with retanning agents or dyes. Seroil L works perfectly as an auxiliary fatliquor used as a complement for other fatting agents to give permanent pleasant feel and inner mellowness. The main characteristic of Seroil L is its high stability, It is especially suitable for doubleface, upholstery, nappa and softy items to give a light weight sensation, round feel and fullness. It is not recommended for vegetable tanned leathers. Seroil L can be perfectly mixed with all types of anionic fatliquors. Suitable for tanning baths. Guidance dosages and applications: In pickle bath: (%on pelt weight) 0,5-2% of Seroil L before or after the acid. In rechroming-tanning baths: (%on shaved- pelt weight) 0,5-2% of Seroil L 10 min after the chrome. Process for double-face: (1 skin L) Water at 55ºC 5-7 g/l Seroil L 5-7 g/l Seroil FO run continue as usual Process for cow milled upper: (%on shaved weight) Water at 50ºC 3% Seroil L 4% Seroil FO 6% Seroil PLS-N run ,5-1% Formic acid run 30 Process for sheepskin Garment: (%on shaved weight) Water at 60ºC 6% Seroil L 6% Seroil FO run ,5-1% Formic acid run 30 they last minimum 6 months.

64 Seroil L2 fatliquor based on lecithin Pasty oil Yellowish 7-8 Good Bag leather Shoe upper Upholstery Garment Gloving Automotive Rechromage Fatliquoring Usage: Fatliquoring oil based on lecithin Seroil L-2 can be used in all kind of soft leathers where a pleasant feel and inner mellowness is required. Seroil L-2 is especially suitable for fatliquoring nappa, ovine, goat, cattle for clothing or upholstery in general for all kind of soft articles. Seroil L-2 provides soft and nice feel and it does not damage grain firmness. It is easily emulsified in water. Due to its enough stability and special characteristics it can be used in the fatliquoring of vegetable tanned leathers to improve inner softness and surface feeling conferring good elasticity to the grain. It can be applied in the main fatliquoring in custom dosages or after acidification in low quantities. Not suitable for tanning baths Suitable for rechroming baths. Guidance dosages and applications: Cow upholstery: (%on shaved weight) 4-8% of Seroil L-2 in the main fatliquoring. Topping: (%on shaved weight) 0,3-0,8% of Seroil L-2 in a new cold bath after the formic acid. Process for vachetta: (%on shaved weight) Water at 50ºC 3,5% Seroil L-2 3,5% Seroil TTK run ,5% Formic acid run 30 drain, no wash Process for cow milled upper: (%on shaved weight) Water at 50ºC 4% Seroil L-2 5% Seroil SPB 6% Seroil PLS-N run ,5-1% Formic acid run 30 Process for sheepskin Garment: (%on shaved weight) Water at 60ºC 6% Seroil L-2 6% Seroil FO run ,5-1% Formic acid run 30 they last minimum 6 months.

65 Seroil LAN Lanolin and synthetic surface oils Pasty oil Yellowish Based on lanolin Seroil LAN must be diluted 1:3 at 55ºC before addition into de drum. Seroil LAN is a low penetration fatliquor, it gives the typical greasy superficial feel. Seroil LAN it is particularly suitable for clothing leather on sheepskin, cattle hide nappa, pull up, etc. 6-8 Medium Bag leather Shoe upper Garment Pre-fatliquoring Fatliquoring Topping Usage: Guidance dosages and applications: Fatliquoring (% on shaved weight). Garment from sheepskin: Add 2-3% of Seroil LAN in the main fatliquoring. Nappa from Cow: Add 1-1,5% of Seroil LAN in the main fatliquoring For all kind of soft leathers with lanolin feel, always use Seroil LAN. In the main fatliquoring: (% on shaved weight). Water at 55ºC 150% Seroil LAN 3% Seroil TTK 2% Seroil PLS-N 4% run 45 Formic acid 0,5% run 30 ph 3,7 Drain, rinse, unload After neutralization: (% on shaved weight). Water at 55ºC 150% Seroil LAN 0,3-0,5% run 20 Topping: (% on shaved weight). After Acidification (new bath) Water at 28ºC 300% Seroil LAN 0,3-0,5%run 10 Formic acid 0,5% run 10 ph 3,7 Drain, rinse, unload they last minimum 6 months.

66 Seroil MS Sulphited oil of general use Fluid oil Transparent dark brownish 7-8 Good Bag leather Shoe upper Sole Vachetta Belt Rechromage Fatliquoring Tannage Usage: Based on natural and synthetic sulphited oils. Seroil MS is a sulphited oil of general use for very soft articles. It is very suitable to fatliquor vegetable tanned leathers due to it do not promote oxidation and give even light and natural colour It has good penetration, spreads very well in the skin structure and gives stability to the fatliquor emulsion. When used in vegetable tanning baths, it improves distribution and increases tear resistance. Not suitable for chrome tanning baths Suitable for vegetable tanning baths Suitable for rechroming baths Guidance dosages and applications: As a sole fatliquor: Bovine for clothing: 6-8% Footwear : 2-3% Suede split: 2-4% Vegetable fatliquoring example: (% on shaved weight) Water at 50ºC 80% Seroil MS 3% Seroil PLSN 3% Seroil SPB 3% Seroil PB 1% run 60 Formic acid 0,5% run 30 Drain Horse up

67 Seroil MVV Fatliquor for vegetable tanned leathers Fluid oil Transparent brownish Based on fatty materials Seroil MVV is an oil with excellent penetration and distribution power through all the leather structure. It is recommended for vegetal tanning hides as it distributes the fat very well, it is stable at vegetal baths and provides homogeneous coloured hides free of stains. Seroil MVV also has very good light fastness. 7-7,5 Good Sole leather Fatliquoring Guidance dosages and applications: It is used between 2 or 8% on shaved weight depending on the article and the fatliquor composition. Fatliquoring sole leather: (% on shaved or sammed weight) Load the drum (15-17 rpm) run 10 (For regularize the humidity) Without float Secus FE 0,3% Sertan BSF 1% Serfix MP 2% run 40 Seroil MVV 1-2% run 90 Usage:

68 Seroil PB Natural-synthetic raw neatsfoot oil type Fluid oil Transparent brownish Based on Natural-Paraffinic raw neatsfoot oil type Use Seroil PB whenever tube, refill, fullness and excellent fibre lubrication characteristics are required. Seroil PB confers remarkable grain lubrication, mixed with any type of anionic or cationic fatliquoring, the lubrication power is improved and better lubricated leathers are obtained both in the surface and inside. Ideally applied in the processes where a very strong drying is applied to keep the lubricated appearance. For all kind of soft and elastic grains, always use Seroil PB. Good Freezing point: -50ºC Guidance dosages and applications: Shoe upper: Add 0,5-1,5% of Seroil PB in the main fatliquoring. Top: Add 0,5% of Seroil PB in the final top with Seroil SC-B (1%) Topping example: (% on shaved weight) After Acidification (new bath) Bag leather Shoe upper Fatliquoring Topping Water at 28ºC 300% Seroil PB 0,2-0,5% Seroil LAN 0,3-0,5%run 10 Formic acid 0,5% run 10 ph=3,7 Drain, rinse, unload Full grain example: (% on shaved weight) Water at 50ºC 150% Seroil PLS-N 3% Seroil L 2% Seroil SPB 1,5% Seroil PB 0,5% run 60 Formic acid 1% run 30

69 Seroil P High performance sulphited fatliquor Fluid oil Transparent brownish 7-8 Good Based on sulphited fatty materials. Seroil P is a versatile fatliquor developed specially for giving very good softness and low dye shade reduction. It is very suitable to fatliquor vegetable tanned leathers due to it do not promote oxidation and give even light and natural colour. It has very good penetration and distribution ability in the leather structure, and increases the stability of the fatliquoring composition. Seroil P is the ideal fat for those that require an economical fatliquor for softening any kind of leather. Suitable for chrome tanning baths Suitable for vegetable tanning baths Suitable for rechroming baths Bag leather Shoe upper Upholstery Garment Gloving Automotive Lining Pretannage Prefatliquoring Retannage Fatliquoring Usage: Guidance dosages and applications: As a sole fatliquor: (% on shaved weight) Cowhide garment: 8-12% Shoe upper: 6-8% Suede split: 3-6% In fatliquors mixtures: (% on shaved weight) Upholstery: Add 4-6% of Seroil P in the main fatliquoring. Softy aniline: Add 4-6% of Seroil P in the main fatliquoring. Example for garment nappa: Water at 55ºC 150% Seroil FO 4% Seroil P 4% Seroil L-2 4% run 90 Formic acid 1% run 30 Continue as usual

70 Seroil PLSN Natural and synthetic sulphated oils. Fluid liquid Brownish Based on natural and synthetic sulphated oils. The Seroil PLSN provides soft and full leathers, with good elasticity. It presents an optimum distribution in the leather, due to its well balanced sulphatation degree. It is applied in any kind of leather: cow hide, sheep or goatskins. It is very suitable for vegetable tanned leathers. 7-8 Good Bag leather Shoe upper Vachetta Fatliquoring Usage: Guidance dosages and applications: As main component of the fatliquoring composition: (% on shaved weight) Garment nappa: 6-8% Shoe upper nappa: 5-6% Shoe upper goatskin: 2-3% Box calf: 4-6% Guidance combinations by parts: (Parts based on the total % of fat) Shoe upper: 2/4 parts of Seroil PLSN 2/4 parts of Seroil TTK Bag leather: 1/4 parts of Seroil FO 3/4 parts of Seroil PLSN Vachetta: 1/2 parts of Seroil PLSN 1/2 parts of Seroil TTK Sheep nappa: 1/2 parts of Seroil PLSN 1/2 parts of Seroil TTK Milled nappa: 3/10 parts of Seroil FO 3/10 parts of Seroil PLSN 1/10 parts of Seroil TTK 3/10 parts of Seroil L-2 Garment nappa: 3/4 parts of Seroil CMT 1/4 parts of Seroil PLSN Goat garment nappa: 5/8 parts of Seroil CMT 3/8 parts of Seroil PLSN Cattle shoe upper full grain example: (% on shaved weight) Water at 50ºC 150% Seroil PLSN 4% Seroil L 2% Seroil FO 1,5% Seroil PBT 0,5% run 60 Formic acid 1% run 30

71 Seroil SCB Cationic oil Fluid paste Whitish Based on raw oil. Seroil SCB it is basically used to brighten the colours as it increases the intensity of shades. Seroil SCB is also used as a softener in double face and velour items, providing a pleasant feel. 2,5-3,5 Excellent Cationic Bag leather Shoe upper Rechromage Fatliquoring Tannage Topping Guidance dosages and applications: Tanning (%on pelt weight): Add 0,5-1,5% of Seroil SCB before addition of chrome salt. Fatliquoring (%on shaved weight): Add 1-2% of Seroil SCB in the rechroming bath. Top for furs: Add 1-2% of Seroil SCB in the final top. Example of application (on top dyeing): (%on shaved weight) Water at 50ºC 150% Dye 1% run 10 Formic acid 0,5% run 10 Seroil SCB 2% run 10 ph=3,8 Drain-Rinse-Unload Usage: This product is an emulsion. So, it separes or could be separated. Shake it strongly before use. Differences in viscosity can be also happen. Product separation or differences observed in viscosity do not affect the product quality. Consequently, we cannot accept claims for these change. they last minimum 6 months.

72 Seroil SPC Sulphochlorinated oil of excellent penetration Fluid oil Transparent yellowish 7-8 Excellent Based on sulphochlorinated oil Fatliquor of general use for any kind of hides, chromed, vegetal tanned or mixed. Seroil SPC has an extraordinary penetration and good fixation. As Seroil SPC shows a quick and very even distribution through the cut, a soft leather with tight grain is achieved even when high amounts of fatliquor are applied. The binding to the leather fibre is very strong so that only a minimum amount of product can be extracted from the finished leather. Seroil SPC shows a very good dispersing effect and even distribution of natural grease. Therefore the patchiness caused by natural fat is reduced significantly. Seroil SPC may also be used in combination with other anionic fatliquors in a wide range of applications, leathers fatliquored with Seroil SPC are distinguished by their firm grain and dry feel, for full feel and springy handle, we recommend its use together with Seroil PLS-N and Seroil M or Seroil CMT It is unoxidable and unrancied. When used before the dye it improves the dyeing evenness. Bag leather Shoe upper Guidance dosages and applications: Fatliquoring Usage: Garment suede (crusting): 3-6% Seroil SPC 1-2% Seroil PLS-N Cow boot nappa: 3-4% Seroil SPC 1% Seroil M or PB 4-5% Seroil PLS-N Shoe white nappa: 2 5% Seroil SPC 3-4% Seroil PLS-N 1-2% Seroil TTK Shoe box: 2,5 % Seroil SPC 4-5% Seroil PLS-N 1-2% Seroil LAN 1% Seroil M or PB Goat shoe nappa: 2-3% Seroil SPC 4-5% Seroil PLS-N 1% Seroil TTK Vegetable tannage (vachetta): 3-6% Seroil SPC 2-4% Seroil L-2 or LAN

73 Seroil SU Sulphited fish oil deodorized and unoxidable Fluid oil Transparent brownish Based on high quality fish oil. Seroil SU it is elaborated with excellent fish oil, unoxidable, deodorized of light colour. It gives leather with very good softness and feel. Seroil SU has a wide range of use it is recommendable in any kind of remarkable quality articles as well as on very soft clear coloured leathers or white. Because of its chemical composition has a less tendency to provoke looseness unlike other sulphited fatliquors. Its good penetration and stability allows it to be mixed with anionic fatliquors being also compatible with anionic products such as dyestuffs, synthetic and vegetable tanning agents, etc. 7-8 Very good Bag leather Shoe upper Upholstery Garment Gloving Automotive Fatliquoring Usage: Not suitable for tanning baths. Suitable for rechroming baths. Guidance dosages and applications: The recommended rates depend on the articles: For suede split: 3 to 5% on shaved weight For upper hides: 2 to 4% on shaved weight In chrome retanning : 1 to 2% on shaved weight Example of application: Cattle white shoe upper 1,6mm (%on shaved weight) Water at 50ºC 150% Seroil SPB 1,5% Seroil SU 2% Seroil PLS-N 4% Seroil L-2 2% run 60 Formic acid 0,5% run 30 ph 3,7 Drain Rinse Unload

74 Seroil TTK Sulphited synthetic-natural fatliquor Fluid oil Transparent yellowish 7-8 Excellent Bag leather Shoe upper Rechromage Prefatliquoring Fatliquoring Tannage Usage: Based on sulphited synthetic-natural fatty materials. Seroil TTK give softness very good body and do not reduce the dye shade. It is an exceptionally versatile product because of its excellent stability to acid and to electrolytes, can be applied in any step of the production process, as prefatting fatliquor in pickling, tanning and retanning floats. Seroil TTK it is very recommendable in the production of wet blue when more fullness and mellowness want to be obtained, the dosages can vary from 0,5 to 1,5% based on pelt weight. It can be easily used due to its characteristics as a substitutive of sulphated fatliquors with the consequent money saving. Combinations with Seroil SU or Seroil MS are suitable to balance the softness degree, by the other hand mixtures with Seroil PLS-N will enhance, if possible, its excellent fullness. Seroil TTK is a fat-liquor that can be used as a unique fatting product for articles with good body and medium high softness. Seroil TTK has good fixing properties to the leather fibre. In dyeing baths, Seroil TTK should be added 15 minutes before the dyestuff. Hides treated with Seroil TTK have smooth and silky surface feel. Suitable for tanning baths. Guidance dosages and applications: As a unique fatliquor: Cattle nappa: 7-10% Sheep nappa: 5-7% Goat 8-10% Guidance combinations by parts: (Parts based on the total % of fat) Shoe upper: 1/3 parts of Seroil SPB 1/3 parts of Seroil TTK 1/3 parts of Seroil PLS-N Bag leather: 1/4 parts of Seroil FO 3/4 parts of Seroil TTK Vachetta: 2/4 parts of Seroil TTK 2/4 parts of Seroil L-2 Sheep soft nappa: 1/2 parts of Seroil CMT 1/2 parts of Seroil TTK Milled nappa: 3/10 parts of Seroil FO 4/10 parts of Seroil TTK 3/10 parts of Seroil L-2 Sheep garment nappa: 3/4 parts of Seroil CMT 1/4 parts of Seroil TTK Goat garment nappa: 3/4 parts of Seroil CMT 1/4 parts of Seroil TTK

75 Seroil UMR Sulphited oil of general use Fluid oil Transparent dark brownish 7-8 Good Usage: Bag leather Shoe upper Sole Vachetta Belt Rechromage Fatliquoring Tannage Based on natural and synthetic sulphited oils. Seroil UMR is a sulphited oil of general use for very soft articles. It is very suitable to fatliquor vegetable tanned leathers due to it do not promote oxidation and give even light and natural colour It has good penetration, spreads very well in the skin structure and gives stability to the fatliquor emulsion. When used in vegetable tanning baths, it improves distribution and increases tear resistance. Not suitable for chrome tanning baths Suitable for vegetable tanning baths Suitable for rechroming baths Guidance dosages and applications: As a sole fatliquor: Bovine for clothing: 4-7% Footwear : 2-5% Suede split: 2-4% Vegetable fatliquoring example: (% on shaved weight) Water at 50ºC 80% Seroil UMR 2,5% Seroil PLSN 3% Seroil SPB 3% Seroil PB 1% run 60 Formic acid 0,5% run 30 Drain Horse up

76 Seroil VS Fatliquor for vegetable tanned leathers Fluid oil Transparent brownish Based on fatty materials Seroil VS is an oil with excellent penetration and distribution power through all the leather structure. It is recommended for vegetal tanning hides as it distributes the fat very well, it is stable at vegetal baths and provides homogeneous coloured hides free of stains. In suede articles it provides silky feel and good final gloss. Seroil VS also has very good light fastness. 7-7,5 Excellent Sole leather Guidance dosages and applications: In retanning bath, 1 to 3% on shaved weight. Fatliquoring sole leather: (% on shaved or sammed weight) Load the drum (15-17 rpm) Without float Secus FE 0,3% Sertan BSF 1% Serfix MP 2% run 40 Seroil VS 1-2% run 90 Pile up & mechanize as usual. run 10 (For regularize the humidity) Fatliquoring Usage:

77 Seroil WPH Extra water proof and washable effect Pasty oil White to yellowish Based on synthetic fatty materials Seroil WPH is a fatliquor that it is used in the manufacture of waterproofed and washable articles on any type of leather. It can be used for other purposes as a top fatliquor or in combination with other anionic fatliquors to take advantage of its properties; to get a nice surface feeling, to improve the resistance to water drops or to help the leathers to keep a natural handle controlling the finishing penetration. 6,5-7,5 Very good Waterproof level: Extra The drying and conditioning is an important factor in the production of waterproof leather. Before testing it is important, that the leather is completely dried, otherwise the waterproof effect cannot develop. Care should also be taken in the finishing of the leather for any emulsifiers used in the finish may have a negative effect on the waterproofing. Seroil WPH it can be used as a unique fatliquor achieving excellent softness. Bag leather Shoe upper Upholstery Garment Gloving Automotive Fatliquoring Guidance dosages and applications: General waterproofing: (% on shaved weight) After Neutralization prior retanning: 3-8% Seroil WPH In fresh fatliquor bath: 5-10 % Seroil WPH After acidify ph 4 and rising fix with chrome aluminium or zirconium salt. It is recommended to not use any tensoactive during the waterproofing retanning process and neutralize completely at ph not lower than 4,8. The maximum effect of Seroil WPH is achieved when a part of the total fatliquor amount is applied after neutralization before retanning. After fixation of the product with formic acid, add 3% of a metallic salt. Add it in two dosages, and run minimum 20 minutes each one. For the preparation of the emulsion add 3-4 parts of water (heated at 50-55ºC) to 1 part of Seroil WPH. Usage: This product is an emulsion. So, it separes or could be separated. Shake it strongly before use. Differences in viscosity can be also happen. Product separation or differences observed in viscosity do not affect the product quality. Consequently, we cannot accept claims for these change.

78 Sheep gloving leather, washable: (% on shaved weight) 10 % Seroil WPH in the main fatliquor (based on wet-blue weight) together with: 0,2 % Ammonia Hang to dry and wet-back Dye and fatliquor with: (% on crust weight) 6 % Seroil WPH Acidify to ph 4,2-4,4 Fix Seroil WPH with polyvalent cations such as aluminium or chrome. Lamb washable garment: (%on shaved weight) 150% water 40ºC 0,5% TRD-27 run 20 Drain Wash two times 100% water 40ºC 5% of Seroil A run 30 4% chrome 33 run 60 0,7% sodium bicarbonate run 20 0,7% sodium bicarbonate run 20 ph=3,8 approx Night in bath Run 5 /h Drain 100% water 40ºC 2% Sertan PK run 20 0,8% sodium bicarbonate run 60 4% Sertan RC or RR run 40 Drain Wash two times 100% water 3% dye 2% Sertan D-3 run 60 1% formic Acid run 30 Drain Wash 150% water 60ºC 0,3 ammonia 10% Seroil WPH run 60 2% formic acid (in two times)run 40 1,5% Sertan AL run 40 1,5% Sertan AL run 40 Drain and rinse 300% water 20ºC 0,5 formic acid run 5 drain 300% water 20ºC 0,5 formic acid run 5 repeat operation if water not clear Water resistant cattle shoe upper: (%on shaved weight) 200 % Water, 40 C 0,2 % Formic acid run10 Drain 50 % Water, 40 C 2 % Sodium formate 1% Sodium bicarbonate run 90 ph 4,8 5 B.C.G blue coloration Wash for 5 min. at 40 C Drain 50% Water, 40 C 1% Dye run 20 5% Seroil WPH run 60 4,5% Sertan RC or RR run 30 2% Sertan IN 2% Sertan BSF 6% Sertan VGM 4% Sertan D3 2% Dye 7 % Seroil WPH 0,5% Ammonia 25% 2 x 10 min. run 2 3h 50 % Water, 30 C 1,5 % Formic acid run 1h Wash for 10 min. at 40 C Drain 100 % Water, 40 C 0,5 % Dye + 0,3 % Formic acid run 20 Wash for 10 min. at 40 C Drain 50 % Water, 40 C 2 3% Seroil WPH 0,5 % Formic acid run15 3% Sertan AL run 2h ph 3,8 Wash for 15 min. at 25 C Unload Seroil WPH

79 Seroil WPS Waterproof leathers fatliquor Pasty oil White to yellowish Based on synthetic fatty materials. Seroil WPS is a fatliquor that it is used in the manufacture of waterproofed and washable articles on any type of leather. It can be used for other purposes as a top fatliquor or in combination with other anionic fatliquors to take advantage of its properties; to get a nice surface feeling, to improve the resistance to water drops or to help the leathers to keep a natural handle controlling the finishing penetration. 6,5-7,5 Very good Waterproof level: Medium The drying and conditioning is an important factor in the production of waterproof leather. Before testing it is important, that the leather is completely dried, otherwise the waterproof effect cannot develop. Care should also be taken in the finishing of the leather for any emulsifiers used in the finish may have a negative effect on the waterproofing. Seroil WPS it can be used as a unique fatliquor achieving excellent softness. Bag leather Shoe upper Upholstery Garment Gloving Automotive Fatliquoring Usage: Guidance dosages and applications: General waterproofing: (% on shaved weight) After Neutralization prior retanning: 3-8% Seroil WPS In fresh fatliquor bath: 5-10 % Seroil WPS After acidify ph 4 and rising fix with chrome aluminium or zirconium salt. It is recommended to not use any tensoactive during the waterproofing retanning process and neutralize completely at ph not lower than 4,8. The maximum effect of Seroil WPS is achieved when a part of the total fatliquor amount is applied after neutralization before retanning. After fixation of the product with formic acid, add 3% of a metallic salt. Add it in two dosages, and run minimum 20 minutes each one. For the preparation of the emulsion add 3-4 parts of water (heated at 50-55ºC) to 1 part of Seroil WPS. This product is an emulsion. So,It separes or could be separated. Differences in viscosity can be also happen. Product separation or differences observed in viscosity do not affect the product quality, Consequently, we cannot accept claims for these changes. Shake it strongly before use.

80 Sheep gloving leather, washable: (% on shaved weight) 10 % Seroil WPS in the main fatliquor (based on wet-blue weight) together with: 0,2 % Ammonia Hang to dry and wet-back Dye and fatliquor with: (% on crust weight) 6 % Seroil WPS Acidify to ph 4,2-4,4 Fix Seroil WPS with polyvalent cations such as aluminium or chrome. Lamb washable garment: (%on shaved weight) 150% water 40ºC 0,5% TRD-27 run 20 Drain Wash two times 100% water 40ºC 5% of Seroil A run 30 4% chrome 33 run 60 0,7% sodium bicarbonate run 20 0,7% sodium bicarbonate run 20 ph=3,8 approx Night in bath Run 5 /h Drain 100% water 40ºC 2% Sertan PK r un 20 0,8% sodium bicarbonate run 60 4% Sertan RC or RR run 40 Drain Wash two times 100% water 3% dye 2% Sertan D-3 run 60 1% formic Acid run 30 Drain Wash 150% water 60ºC 0,3 ammonia 10% Seroil WPS run 60 2% formic acid (in two times) run 40 1,5% Sertan AL run 40 1,5% Sertan AL run 40 Drain and rinse 300% water 20ºC 0,5 formic acid run 5 drain 300% water 20ºC 0,5 formic acid run 5 repeat operation if water not clear Water resistant cattle shoe upper: (%on shaved weight) 200 % Water, 40 C 0,2 % Formic acid run10 Drain 50 % Water, 40 C 2 % Sodium formate 1% Sodium bicarbonate run 90 ph 4,8 5 B.C.G blue coloration Wash for 5 min. at 40 C Drain 50% Water, 40 C 1% Dye run 20 5% Seroil WPS run % Sertan RC or RR run 30 2% Sertan IN 2% Sertan BSF 6% Sertan VGM 4% Sertan D3 2% Dye 7 % Seroil WPS 0,5% Ammonia 25% 2 x 10 min. run 2 3h 50 % Water, 30 C 1,5 % Formic acid run 1h Wash for 10 min. at 40 C Drain 100 % Water, 40 C 0,5 % Dye % Formic acid run 20 Wash for 10 min. at 40 C Drain 50 % Water, 40 C 2 3% Seroil WPS 0,5 % Formic acid run15 3% Sertan AL run 2h ph 3,8 Wash for 15 min. at 25 C Unload Seroil WPS

81 Auxiliaries & Dyes

82 VEGETABLE TANNAGE AUXILIARIES & RETANNAGE Secus FE - Iron stains removal (Ion Fe sequestering agent) Serfix MP - Retanning agent for vegetable tanned leathers Sertan RP - Vegetable pretanning agent (Quick tanning) AUXILIARIES DYES Ecotint C EXCELLENT Fixing dye exhausting agent Ecotint G VERY GOOD Dye levelling agent Ecotint N MEDIUM Dispersing agent of vegetal and dying use

83 Serfix MP Bleaching-fixing product for vegetal tannage Solid in powder White to yellowish Synthetic inorganic and organic salts. Vegetal tannins fixing agent and vegetal tanned leather bleaching agent, special for sole and case hide. Clear and uniform leathers are obtained. 2,5±0,5 Sole leather Retannage Once tanned and set-out, 2-4% Serfix MP on shaved weight or pelt weight is added bathless. Together with Serfix MP is recommended to use a 0,5 % of Seroil PB to improve feeling, unoxidable clear colour and also a smoother and elastic grain that avoids grain breakage when the hide is folded. Example of application Serfix MP: Sole tannage, retannage, fatliquoring Process for cowhide butts. Drain pickle bath 6ºBè ph 4-4,2 (% on pelt weight) without float Sertan RP 4% run 60 Water at 30ºC 20% run 20 Sertan VGH 5% Sertan VGH 5% run 120 Sertan VGH 10% Ecotint N 1,5% Sertan VGM 5% run 4h Sertan VGH 5% CHESTNUT 10% Seroil MS 0,7% run till Run until getting 38-40ºC inside of the drum. Water at 30ºC 50% Sertan X 0,7% run 120 Pile up 24-48h, set-out, shave if necessary. Weight (% on shaved or sammed weight) Load the drum (15-17 rpm) run 10 (For regularize the humidity) Without float Sertan BSF 1% Serfix MP 2% run 40 Seroil VS 2,5% run 90 Pile up & mechanize as usual.

84 Sertan RP Pretanning agent for vegetable tannage Solid in powder Brown to yellowish Based on naphthalene sulphonic acid derivative Sertan RP can be used as a pretanning agent in any kind of vegetable tanned leather, and in the preparation of quick sole leather tannage. Flobaphenes of vegetable tannins have a better penetration and distribution, penetration time of tannins is reduced, and production is increased. 3±0,5 Excellent Bag leather Shoe upper Upholstery Lining Pretannage % on lime weight: Bovine hides, in sole leather tannage: 1,5-3% Cow hides, in quick vegetable tannage, in drum: 3-5% Sheepskins for lining: 2,5-4% Example for sole leather (Butt): Drain pickle bath 6ºBè ph 4-4,2 (% on pelt weight) Without float Sertan RP 4% run 60 Water at 30ºC 20% run 20 Sertan VGM 14% run 120 Sertan BSF 6% Sertanm ND 4% Sertan VGH 13% run 4h Sertan VGH 10% Sertan BSF 4,5% Seroil MS 0,7% run till Run until getting 38-40ºC inside of the drum. Example for vachetta (Belie): Pickle bath 6ºBè ph 4-4,2 (% on pelt weight) Water at 6ºBè ph 4-4,2 20% Sertan RP 3% run 30 Sertan VGH 10% run 60 Sertan ND 4% Sertan VGH 10% run 60 Sertan ND 4% Sertan VGH 10% run 5h Night in bath Water at 25ºC 50% Sertan X 0,7% run 30 Horse up 24-48h Set out Shave

85 Secus FE Iron stains remover for vegetable tanned leathers Solid in powder White to yellowish Compound based on polyphosphates Secus FE is a complexing polyphosphate of metallic ions, specially iron. Secus FE applications are multiple and essential in all those processes where metallic ion traces are not wanted. Secus FE eliminates iron stains from the shaving and it does not change leather tone, especially in vegetal tanning. Ph: 2-2,7 Guidance dosages and processes: Recommended dosage between 0,1% to 0,3% on pelt weight and previously diluted with water. Washing after shaving: 100% Water 30ºC 0,3% Secus FE 0,3% Oxalic Acid Vegetable tannage

86 Seradye DRUM DYES Technical Data Sheet Fastness to dry cleaning-iuf 434 Washing fastness IUF 423 Sweat fastness IUF 426 Wet fastness Migration into plastisied PVC INF442 Light fastness Solubility g/l INF 201 at 60º C Colour index Yellow AN Co Wo N Havana HG Co Wo N Orange OR Co Wo N Red RN Co Wo N Blue BN Co Wo N Brown PNR Co Wo N Brown PNB Co Wo N Black NN Co Wo N Black NN Co Wo N Black NN Co Wo N Black NP Co Wo N Black NP Co Wo N Co= Staining on cotton Wo= Staining on wool N= Staining of shade

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