| 主权项 |
1. A lubricating composition comprising an oil of lubricating viscosity and a β-amino carbonyl compound of formula: wherein, independently, each variable X is —HNR6 or —N(R6)2; R1 and R2 are hydrogen, or an unsubstituted or substituted hydrocarbyl group containing 1 to 30 carbon atoms, with the proviso that R1 and R2 are simultaneously not both hydrogen; R3 and R4 are hydrogen, an unsubstituted or substituted hydrocarbyl group containing 1 to 30 carbon atoms, or —C(O)—O-Ak, with the proviso that the number of total number of carbon atoms on substituent groups R1, R2, R3, R4, R5, and R6 is at least 8; R5 is hydrogen or an alkyl group containing 1 to 8 carbon atoms, or R1 and R5 are joined to form a cyclic structure; Ak is an alk(en)yl group containing 1 to 30 carbon atoms; and R6 is an alk(en)yl chain containing 1 to 30 carbon atoms. |
