Patent ID: 6613722
Filing Date: 2003-09-02
Classification: C10M,C10N

Abstract:
A lubricating composition for lubricating a continuously variable transmission, the lubricating composition comprising a mixture of:(1) a major amount of a lubricating oil; and (2) an effective amount of a continuously variable transmission performance enhancing additive combination comprising: (a) at least one organic phosphite selected from the group consisting of â€ƒwhere R is hydrocarbyl and R1 is hydrocarbyl or hydrogen, and â€ƒwhere R, Râ€², and Râ€³ are hydrocarbyl; (b) at least one amine salt of an organic phosphate having the structure â€ƒwherein R2 and R3 are alkyl or aryl, and further R3 may be H, and R4 is alkyl; and (c) one or more friction modifiers selected from the group consisting of: (1) amides having the structure â€ƒwherein R5 and R6 are independently C9 to C29 alkyl groups, and y=1 to 10, (2) succinimides having the structure â€ƒwherein R7 is C6 to C30 alkyl, and z=1 to 10, and (3) ethoxylated amines having the structure â€ƒwherein R8 is a C6 to C28 alkyl group, X is O, S or CH2, and x=1 to 6 or the reaction product of an ethoxylated amine with a boron compound, the reaction product having the structure: â€ƒwhere R8 is a C6 to C28 alkyl group, R9 is either hydrogen or an alkyl radical, X is O, S or CH2, and x=1 to 6.