Patent ID: 7902313
Filing Date: 2011-03-08
Classification: C08G

Abstract:
1. A process for the preparation of poly(silyl ester)s comprising a structural unit of the formula (I) wherein each R wherein each R wherein L represents a hydrocarbyl or substituted hydrocarbyl group, wherein said substituted hydrocarbyl is substituted by one or more substituents independently selected from the group consisting of alkyl, cycloalkyl, carboxyl, substituted carboxyl, alkoxyl, aralkyl, aralkyloxyl, aryl, aryloxyl, hydroxyl, halogen, amino radical, amino alkyl radical, and a polymer with pendant acid groups, L′ represents O, S, NR each n independently represents a number of —Si(R and y represents a number from 2 to 100000, wherein the process comprises the step of reacting a polyacid of formula (II) wherein Z(O)OH represents the acid moiety attached to L, m is an integer from 2 to 100000, and L is as defined above, with a polyacyloxysilyl derivative of formula (III) wherein R and R while removing the formed acid group(s) of formula (IV), (V) and (VI), from the system, wherein Z in formula (I), (II), (III), (IV), (V), and (VI) is independently C, POH, P or S═O with a proviso that R