Patent ID: 7521403

Claim:
A lubricant composition having improved antiwear or friction properties comprising a lubricating oil for internal combustion engines and an effective antiwear or friction modifying amount of one or more additive compounds selected from the group consisting of N-alkylaminoacetamide compounds of formula (I) or (II) and alkylenedi-, alkylenetri- or alkylenetetra-amine acetamide compounds of formula (III) where A is alkylene of from 2 to 6 carbon atoms or is a group G, each independently, is alkylene of 2 to 6 carbon atoms, R, each independently, is alkyl or alkenyl of 1 to 8 carbon atoms and R′, each independently, is hydrogen or alkyl or alkenyl or 1 to 24 carbon atoms, where if an amide nitrogen is monosubstituted by alkyl or alkenyl, said alkyl or alkenyl is from 8 to 24 carbon atoms, where if an amide nitrogen is disubstituted by alkyl or alkenyl, the total carbon atoms of said alkyls or alkenyls combined are from 8 to 18 carbon atoms, and where each amide nitrogen is either mono- or disubstituted by alkyl or alkenyl and where the compounds of formula (I), (II) or (III) are present from about 0.15% to about 10% by weight, based on the weight of the lubricant.