Patent ID: 6495065
Filing Date: 2002-12-17
Classification: C08F

Abstract:
A composition for shortstopping free radical emulsion polymerizations, wherein the composition contains a nitrosamine inhibitor and a shortstopper; wherein the inhibitor is a mono-(C2-C16)alkylamine, polyethylenimine, pyrrole, indole, ascorbic acid, or polyoxymethylene; andwherein the shortstopper is an alkylhydroxylamine having the following general formula: wherein R1 and R2 are independently hydrogen, C2-20 alkyl, hydroxy C2-20 alkyl, C2-20 alkoxy C2-20 alkyl, and sulfonated C2-20 alkyl groups, and they could be cyclic or branched, with the proviso that R1 and R2 may not concurrently be H, or a H and a methyl.