BRUNO BOCK THIOCHEMICALS THIOCURE. Mercaptofunctional Binders, Additives and Crosslinkers for Coatings, Adhesives & Sealants THIOCURE.

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1 BRUNO BOCK THIOCURE Epoxide Isocyanate THIOCURE Polythiols Unsaturated Hydrocarbons Mercaptofunctional Binders, Additives and Crosslinkers for Coatings, Adhesives & Sealants

2 THIOCURE Polythiols for your benefit Based on our feedstock of mercapto carboxylic acids we have introduced a series of polythiol products as reactive agents in coatings, adhesives and sealants under the trade name THIOCURE. Our THIOCURE product series represents a group of solvent free multifunctional mercapto compounds with a wide variety of viscosities and reactivities. Depending on the nature of the THIOCURE compound the mechanical properties of the final product can be adjusted. In addition the high sulfur content leads to coatings and adhesives with high refractive indices. Our THIOCURE products can be used in combination with conventional epoxy, isocyanate and unsaturated systems. They also show good performance as chain-transfer agents (CTAs) in radical polymerizations. THIOCURE Customer Support Our Technical Service Center supports you in the development of new formulations for use in coatings, adhesives, sealants or optical applications. Thanks to many years of experience in these fields we can quickly provide solutions to our customer s problems and answer technical questions related to our products. Benefit from our expertise and state-of-the-art technical and laboratory equipment by contacting us with your questions! THIOCURE Customized Products In addition to our standard portfolio of THIOCURE polythiols we manufacture tailor-made products for your application from lab to industrial scale. We are open for your ideas! THIOCURE Opportunities Epoxy Systems THIOCURE Polythiols serve as curing agents for epoxy resins in solvent free coatings, sealing compounds, floor coatings and repair composites for the construction sector. The addition of THIOCURE allows formulation of low temperature curing systems with lower yellowing tendencies and adjustable flexibilities. THIOCURE Polythiols highly reactive solvent free low viscosity colorless Isocyanate Systems THIOCURE Polythiols can be applied as main binder or reactive thinner in combination with isocyanates resulting in coatings, adhesives or castings with less sensitivity against humidity in the drying phase and improved UV resistance. The high refractive indices of THIOCURE products enable fabrication of brilliant surfaces and optical lenses. Thiol-ene Systems In combination with unsaturated hydrocarbons THIOCURE Polythiols react via UV or thermal initiated radical addition ( thiol-ene reaction ) showing high reaction rates with double bonds. Thiol-ene systems show lower shrinkage and no oxygen inhibition in combination with adjustable flexibility compared to standard unsaturated systems in coatings or adhesives.

3 THIOCURE Product Range Mercaptopropionates PETMP 3) TMPMP TEMPIC Chemical Description Pentaerythritol Tetra Trimethylolpropane Tri Tris [2-(3-mercaptopropionyloxy) ethyl]isocyanurate CAS-No SH-functionality Molecular weight [g/mol] H active Equivalent 1) [g/eq] SH-content 1) [%] 1) 2) Viscosity [mpa s] ~500 ~ 150 ~ Production Site GER, USA GER, USA GER Registration Status REACh, TSCA, DSL/NDSL, ECL, ENCS, IECSC REACh 4), TSCA, DSL/NDSL, ECL, IECSC REACh 4), TSCA, DSL/NDSL, IECSC 1) These typical values should not be interpreted as specifications 2) Viscosity: rotational viscometer DIN 53019, 20 C 3) also available as l.o. = low odor and sl = slow PU-Coatings UV- / LED-Curing Systems

4 Mercaptopropionates Polymer Thiols GDMP DiPETMP ETTMP 700 ETTMP 1300 PCL4MP 1350 Glycol Di Di-Pentaerythritol Hexa Ethoxylated Trimethylolpropane Tri Ethoxylated Trimethylolpropane Tri Polycaprolactone Tetra ~ 700 ~1300 ~ ~ 10 ~ 2500 ~ 200 ~ 400 ~ 1500 GER GER GER GER GER REACh 4), TSCA, DSL/NDSL, ECL, IECSC 6) REACh 4), ECL, ENCS, IECSC 6) REACh 5), IECSC REACh 5) REACh 5), IECSC 4) Pre-registered 5) Polymer 6) Allowed as R&D substance below 1 tpa Adhesives & Sealants Floor Coatings

5 BRUNO BOCK Bruno Bock Success built on Sulfur Bruno Bock Chemische Fabrik GmbH & Co. KG is a privately owned enterprise founded as a trading company in Hamburg/Germany in Since the 1950s the company specialized in manufacturing of organic sulfur specialties such as thioglycolic acid, mercapto propionic acid and their derivatives. In 2005 Bruno Bock established Evans Chemetics LP as fully owned production and distribution subsidiary in the USA. Sustainability of our products drives us to continuously develop higher qualities with improved manufacturing processes under permanent control of our environment. Our foremost goal is to provide unique unmatched quality standards and undivided dedication to our valued customers. Our production site in Germany is certified according to ISO 9001/ISO 14001/BS OSHAS The Evans Chemetics LP production site is certified according to ISO 9001.

6 BRUNO BOCK Your THIOCURE contact Germany Bruno Bock Chemische Fabrik GmbH & Co KG Eichholzer Straße Marschacht Phone: +49 (0) Fax: +49 (0) USA Evans Chemetics LP 500 Frank W. Burr Boulevard Glenpointe Center West - 4 th Floor Teaneck, New Jersey Phone: +1 (201) Fax: +1 (201) BRUNO BOCK Distributor