Witco Corporation

Argus Chemical Corporation

Michael R Croce

Stuart D Brilliant

Kook-Jin Bae

Kook-Jim Bae

Scott R Chambers

Blends of methyltin mercapto carboxylic acid esters and butyltin carboxylates which form homogeneous stable liquid mixtures and provide initial color control, processing heat stability, as well as light stability to chlorinated polymers are disclosed. As these compositions are homogeneous liquids at ambient temperatures they can be readily measured and mixed into the resins, and are thus easy to formulate, market and use.

Organotin stabilizer composition for polymers

Polymer stabilizer and polymer compositions stabilized therewith

An improvement in the method for the foaming of polyvinylchloride resins by the use of a blowing agent and an activator therefor which uses as the activator a mixture of at least one organotin mercapto acid ester and a diorganotin oxide complex with an ester of an oxygen-containing acid.

Stabilization and foaming of polyvinylchloride resins

Halogenated vinyl polymer compositions containing molybdenum smoke retardants and organotin compounds having an overall ratio of sulfur to tin of not more than 1.7 gram atoms of sulfur per gram atom of tin, typically from about 0.6 to about 1.7 and preferably from about 0.6 to about 0.9 gram atoms of sulfur per gram atom of tin.

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Brooklyn, NY, United States of America

Michael R Croce