Automobile transmission lubricating oil composition with enhanced anti-corrosion performance.

摘要

The invention relates to a lubricating composition comprising at least one base oil, at least one dispersant and at least one phosphite polymer of formula (I):Among them,-Each of R1, R2, R3 and R4 can be independently selected from C1-C20 alkyl, c3-c22 alkyl, c6-c40 cycloalkyl, c7-c40 cycloalkyl, C1-20 methoxyalkyl ethylene glycol ether and y-oh;-Y is selected from alkyl in c2-c40, alkyl lactone in c2-c40, - r7-n (R8) - R9 -, wherein R7, R8 and R9 are independently selected from hydrogen, alkyl in C1-C20, alkyl in c3-c22, cycloalkyl in c6-c40, cycloalkyl in c7-c40, methoxyalkyl ethylene glycol ether in C1-20,-M is an integer between 2 and 100,-N is an integer between 1 and 1000.Summary figure: None