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BRUNO BOCK Chemische Fabrik GmbH & Co. KG specialises in the manufacture of ORGANIC SULFUR CHEMICALS and is the world's leading producer of Thioglycolic Acid, 3-Mercaptopropionic Acid, Thiolactic Acid, and their derivatives esters, Polythiols and salts.

To expand the product portfolio and to strengthen a position in the North American market BRUNO BOCK established EVANS CHEMETICS LP in 2005 which operates from its production site in Waterloo, New York, USA.

In recent years the range of Polythiols has been expanded to include new applications and customer service has been improved by expanding the communication between the application technology laboratory and customers.

THIOCURE® Polythiols are used in Coatings, Adhesives, Sealants. Some of these products are also used in the manufacture of high refractive index polymers for high quality lenses and glasses.

The mercaptocarboxylic acids and their esters are used in radical polymerisations as Chain Transfer Agents (CTA) to adjust the molecular weight of polymers.

3-Mercaptopropionic Acid is used as co-catalyst in the manufacture of Bisphenol A. With a suitable catalyst the efficiency of the process can be enhanced significantly. Bisphenol A is a main raw material in the manufacture of Polycarbonate and Epoxy Resins.

EVANSTAB® Thiodipropionates are esters of Thiodipropionic Acid and are used as secondary antioxidants in a number of polymers like polyolefins, ABS, Styrol-Butadien Emulsions, and certain adhesives.

The anticorrosive properties of THIOGLYCOLIC ACID is used in water treatment chemicals or in oilfield chemicals, here in particular Thioglycolic Acid or its salt AMMONIUM THIOGLYCOLATE  in down-hole applications (drilling muds).

Also for cleaners for metal surfaces THIOGLYCOLIC ACID can be useful as also THIOLACTIC ACID. This includes "de-rouging" of stainless steel equipment in ultrapure water systems.

For rim cleaning THIOGLYCOLIC ACID in form of SODIUM THIOGLYCOLATE solution shows excellent dirt/rust removal properties as also the iron dust is dissolved due to the iron chelating properties.