Patent ID: 6784307
Filing Date: 2004-08-31
Classification: C07C

Abstract:
A method of preparing a quaternary ammonium methocarbonate having the formula wherein R1 and R2 are independently C1-C30 alkyl and R3 is a C8-C30 alkyl, the method comprising reacting(a) an amine having the formula NR1R2R3; (b) (i) a cyclic carbonate having the formula wherein R4 is hydrogen or C1-C4 alkyl and n is an integer from 1 to 10,(ii) an aliphatic polyester having the formula wherein R5, R6, R7, and R8 are independently hydrogen or C1-C10 alkyl and m is an integer from 1 to 1200, or(iii) a mixture thereof; and (c) methanol to form the methocarbonate.