Patent ID: 6583092
Filing Date: 2003-06-24
Classification: C10M,C10N

Abstract:
A lubricating oil composition, comprising:(A) a base oil; (B) an alkali or alkaline earth metal salt of a saligenin derivative represented by the formula wherein in formula (B-I): each X independently is â€”CHO or â€”CH2OH; each Y independently is â€”CH2â€” or â€”CH2OCH2â€”; wherein the â€”CHO groups comprise at least about 10 mole percent of the X and Y groups; each M is independently the valance of an alkali or alkaline earth metal ion; each R is independently a hydrocarbyl group containing 1 to about 60 carbon atoms; m is 0 to about 10; n is 0 or 1 provided that when n is 0 the M is replaced with H; and each p is independently 0, 1, 2, or 3; provided that at least one aromatic ring contains an R substituent and that the total number of carbon atoms in all R groups is at least 7; and further provided that one of the X groups can be H; (C) an alkali or alkaline earth metal salt of a hydrocarbon-substituted salicylic acid; and (D) a metal salt of a phosphorus-containing compound represented by the formula wherein in formula (D-I), X1, X2, X3 and X4 are independently O or S; a and b are independently zero or 1; and R1 and R2 are independently hydrocarbyl groups.