Patent ID: 7667067

Claim:
A composition comprising a salt of formula 1: wherein R 1 and R 2 are independently a C 1 -C 6 alkyl, R 3 is a divalent C 2 -C 6 alkyl, R 4 is a C 5 -C 24 alkyl, alkenyl, dienyl, C 6 -C 24 trienyl, or C 8 -C 24 tetraenyl or a mixture thereof, and X − is adipate, pimelate, suberate, azelate, sebacate, phthalate, isophthalate, terephthalate, benzoate, 4-hydroxybenzoate, gallate, ferulate, cholate, glucuronate, alpha-lipoate, dihydrolipoate, or mixtures thereof.