Patent ID: 7541319

Claim:
A composition comprising: (A) a lubricant or a hydrocarbon fuel, and (B) at least one 1,3-dithiolane-2-thione of formula (I): wherein: R 1 is a carboxy alkyl of the structure: (CH 2 ) p CO 2 R 5 wherein: p is from 1 to 50, and R 5 is selected from the group consisting of hydrocarbyl, chain-substituted saturated hydrocarbyl, and chain-substituted unsaturated hydrocarbyl; R 2 , R 3 , and R 4 are independently selected from the group consisting of hydrogen, alkyl, and alkenyl; wherein said alkyl and alkenyl groups are unsubstituted or substituted with OH, SH, oxirane, thiirane, or 1,3-dithiolane-2-thione.