Patent ID: 7696136

Claim:
A composition comprising: (A) a lubricant; and (B) from 0.01 to 5 wt % of at least one hydroxy carboxylic acid ester or hydroxy polycarboxylic acid ester having the following generic formula: wherein: R 3 is selected from the group consisting of C 1 -C 18 linear or branched alkyl, C 1 -C 18 linear or branched alkenyl, alkoxyalkyl, hydroxyalkyl, aryl, and benzyl; and X— is selected from the group consisting of wherein: R 1 is selected from the group consisting of hydrogen, CH 2 CO 2 R 3 , CH(OH)CO 2 R 3 , alkyl, aryl, alkoxyalkyl, and alkaryl; R 2 is selected from the group consisting of hydrogen, alkyl, and CH 2 CO 2 R 3 ; provided that: if R 1 is CH 2 CO 2 R 3 , then R 2 is hydrogen or CH 2 CO 2 R 3 ; if R 1 is CH(OH)CO 2 R 3 , then R 2 is hydrogen; if R 1 is alkyl, aryl, alkoxyalkyl, or alkaryl, then R 2 is hydrogen or alkyl; R 4 is selected from the group consisting of hydrogen, alkyl, aryl, and CH 2 CO 2 R 3 ; and R 5 and R 6 are independently selected from the group consisting of hydrogen, alkyl, and aryl; and (C) from 0.01 to 2 wt % of at least one phosphorus-containing additive.