DISPONIL AES 60 is an emulsifier for the manufacture of finely dispersed emulsion polymers, in particular for

Transcription

1 DISPONIL AES 60 Use DISPONIL AES 60 is an emulsifier for the manufacture of finely dispersed emulsion polymers, in particular for styrene homo and copolymers acrylate homo and copolymers. Composition Alkylaryl polyglycol ether sulphate, Na-salt R-C 6 H 4 -O-(CH 2 -CH 2 -O) x -SO 3 Na Specification Active substance % (dry residue, salt excluded / Q-P ) ph value (10 % /Q-P ) Sodium sulphate < 1.0 (DGF H-III 8a) Additional data Appearance colourless to yellowish, clear liquid Ionic character anionic Viscosity, 20 C < 200 mpa s Gel point < 5 C Density, 25 C approx g/cm³ cmc value approx g AS/I

2 Properties Surface tension (mn/m) according to Lecomte du Noüy, at 25 C and different application concentrations g AS/l = mn/m g AS/l = mn/m g AS/l = mn/m g AS/l = mn/m g AS/l = mn/m g AS/l = mn/m g AS/l = mn/m g AS/l = mn/m g AS/l = mn/m g AS/l = mn/m g AS/l = mn/m C M C = 0,2 8 g A S / l 20 0,010 0,100 1,000 g A S / l Method Water value Ring method according to du Noüy (Ring NO. 8602) 72.0 mn/m DISPONIL_r_AES_60_E 2

3 Application I. Polymerization of styrene-2-ethyl hexyl acrylate methacrylic acid (58:40:2) Reactor p.b.w. Water, demineralized 45.0 p.b.w. DISPONIL AES p.b.w. DISPONIL NP p.b.w. Ammonium iron II sulphate 0.2 p.b.w. Citric acid 0.6 p.b.w. Zinc formaldehydesulfoxylate, Hydrosulfit AWC Dosage I 2.0 p.b.w. Ammonium peroxodisulphate 48.0 p.b.w. Water, demineralized Dosage II p.b.w. Styrene p.b.w. 2-ethyle hexyl acrylate 9.0 p.b.w. Methacrylic acid Dosage III 1.5 p.b.w. Zinc formaldehyde sulfoxylate 18.5 p.b.w. Water, demineralized Dosage IV 1.0 p.b.w. Ethylene diamine tetra acetic acid tetra sodium salt (EDTA) 24.0 p.b.w. Water, demineralized p.b.w. Polymer dispersion approx. 8.5 p.b.w. Ammonia, 25 % solution Process Preparation of water, DISPONIL AES 60, DISPONIL NP 10, ammonium-iron-ii-sulphate, citric acid and zinc formaldehydesulfoxylate. Cleanse reactor with nitrogen and heat to about 40 to 50 C. Add 10 % of the quantity of the monomer blend from Dosage II to the reactor. Commence the polymer reaction with 10 % of the quantity of ammonium peroxodisulphate solution from Dosage I DISPONIL_r_AES_60_E 3

4 After the positive exothermic heat has subsided, the monomer blend (Dosage II) and the ammonium peroxodisulphate solution (Inflow I) are added. (Dosage time 1 to 2 hours, reactor temperature approx C). After addition ot the total quantity of the monomer blend (Dosage II) and ammonium peroxidisulphate solution Dosage I post-polymerize for approx. 1 hour at 75 to 85 C. After the post polymerization phase zinc formaldehydesulfoxylate solution (Dosage III) is added for post catalysation. Cooling to < 30 C and stabilization of the Fe2+-ions through the addition of the EDTA solution (Dosage IV). ph-value adjustment. Technical data of the polymer dispersion MFT < 10 C Solid contents % Storage stability > 6 months Mechanical stability good Calcium stability good Viscosity < 200 mpa s Particle size < 0.1 mm II. Polymerization of styrene butyl acrylate acrylic acid (65:33:2) Reactor p.b.w. Water, demineralized 37.5 p.b.w. DISPONIL AES p.b.w. Potassium peroxodisulphate (KPS) Dosage I p.b.w. Styrene p.b.w. Butyl acrylate 9.0 p.b.w. Acrylic acid Dosage II 1.0 p.b.w. Potassium peroxodisulphate 49.0 p.b.w. Water, demineralized p.b.w. Polymer dispersion approx. 9.0 p.b.w. Ammonia, 25 % solution (ph value 7-8) DISPONIL_r_AES_60_E 4

5 Process Preparation of water, DISPONIL AES 60 and potassium peroxodisulphate. Flush reactor with nitrogen and heat to about 75 to 80 C. Add 10 % of the quantity of the monomer blend from Dosage I to the reactor. After the positive exothermic heat has subsided, the monomer blend (Dosage 1) and the catalyst solution (Dosage II) are added (dosage time 1-2 hours, reactortemperature 75 to 80 C) After addition of the total quantity of the monomer blend and catalyst solution post-polymerize to approximately 1 hour at 80 to 85 C Cooling to < 30 C and ph-value adjustment with ammonia, 25 % solution. Technical data of the polymer dispersion MFT > 50 C Solid contents % Storage stability > 6 months Mechanical stability good Viscosity < 200 mpa s Particle size < 0.1 mm Dosage The required quantity is dependent upon the type and amount of starting monomers as well as upon the polymerization process and the desired properties of the polymer dispersion. In general, the amount ranges between 0.5 and 5 % AS DISPONIL AES 60, calculated on the monomers. DISPONIL AES 60 is suitable as an anionic sole emulsifier. Application frequently takes place, however, in combination with non-ionic coemulsifiers of the DISPONIL NP, DISPONIL OP, DISPONIL A, DISPONIL LS or DISPONIL TA types DISPONIL_r_AES_60_E 5

6 Compatibility DISPONIL AES 60 is miscible with anionic and non-ionic emulsifiers in any ratio suitable for polymerization. Approvals Food Law Approvals BfR XIV BfR XXI BfR XXXIV BfR L FDA FDA FDA Regulatory Status Miscellaneous Polymer dispersions Natural and synthetic rubber Vinylidene chloride copolymers Copolymers and graft polymers of acrylonitrile Adhesives Components of paper and paperboard in contact with dry food Emulsifiers and/or surface-active agents TSCA (USA), DSL (Canada), PICCS (Philippines), AICS (Australia), ECL (Korea), ENCS/MITI (Japan), IECSC (China), EINECS (EU) Storage It is recommended to store DISPONIL AES 60 at room temperature and to protect it from heat and frost. Subject to storage in sealed original containers, the product is durable for at least 12 months. Further Information Preservation with methylisothiazolinon/benzisothiazolinon Revision-No Effective September 1, 2005 Subject to appropriate storage under the usual storage and temperature conditions, our products are durable for at least 1 year. Suggestions of processing and using our products are given with best knowledge and information but without obligation. COGNIS does not accept any guarantee to the suitability of a product for the user's specific purpose. Furtheron the user himself assumes a liability to follow all legal regulations by using our products. The user can only pass on our sample to third parties with previous assent of COGNIS DISPONIL_r_AES_60_E 6