Patent ID: 8889890

Claim:
A ketal ester of an oxocarboxylic acid, the ketal ester having Structure I: wherein α is 0 or an integer from 1 to 12; n is 0 or 1; R 1 is a linear alkyl, aryl, arylalkylene, or branched alkyl group with 1-18 carbon atoms; R 2 is isobutyl; R 5 is hydrogen, C 1-6 straight chain or branched alkyl, phenyl, substituted phenyl, C 1-6 alkyl substituted with up to four OR 8 groups, wherein R 8 is hydrogen or a C 1-6 alkyl, R 3 is a linear alkyl or branched alkyl group with 1-18 carbon atoms; and R 4 is hydrogen, alkyl, aryl, and arylalkylene or branched alkyl group with 1-10 carbon atoms.