CATIONIC ELECTRODEPOSITABLE COMPOSITIONS CONTAINING HETEROCYCLIC DIORGANOTIN CATALYSTS

摘要

Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotins of the formula where R is a C1-C8 alkyl or an aryl group, Y is -CH2CH2-, -CH2CH2CH2-, -CH2CH(CH3)-, CH2CH(OH)CH2-, X is a linking group which may be -S- or -O-. Also disclosed are cationic electrodepositable compositions containing such catalysts.