Patent ID: 8558022
Filing Date: 2013-10-15
Classification: C08G

Abstract:
1. A process to prepare an oligomerized ester alkoxylate comprising preparing an oligomerized ester by either (a) partially oligomerizing 12-hydroxy stearic acid or 12-hydroxy stearic acid methyl ester such that less than 99 mole percent of the carboxylic acid groups or ester groups is reacted to form a product including an oligomer of the hydroxylated fatty acid or the hydroxylated fatty ester having unreacted carboxylic acid groups or ester groups; and quantitatively reacting the unreacted carboxylic acid groups or ester groups with an alcohol having from 2 to 22 carbon atoms; optionally removing any excess alcohol; to form a product including an oligomerized ester of the hydroxylated fatty acid or of the hydroxylated fatty ester; or (b) quantitatively reacting 12-hydroxy stearic acid or 12-hydroxy stearic acid methyl ester with an alcohol having from 2 to 22 carbon atoms; optionally removing any excess alcohol; to form a product including an ester of the 12-hydroxy stearic acid or 12-hydroxy stearic acid methyl ester; and partially oligomerizing the produced ester such that less than 99 mole percent of the carboxylic acid groups or ester groups is reacted to form a product including an oligomerized ester of 12-hydroxy stearic acid or 12-hydroxy stearic acid methyl ester; and reacting the oligomerized ester with an alkylene oxide, in the presence of a double metal cyanide catalyst, under conditions such that an oligomerized ester alkoxylate is formed.