Lubricant composition

摘要

A lubricant composition comprising lubricating oil and a compound containing phosphorus and an amine of formula I:;
wherein R1 is a hydrocarbon group and at least one of R1 is selected from: —(C1-C20)alkyl, —(C1-C20)alkenyl, —(C5-C20)cycloalkyl; R is selected from: —(C4-C20)alkyl, —(C4-C20)alkenyl, —(C5-C20)cycloalkyl; and wherein R2, R3 and R4 are independently selected from: —H, —(C6-C36)alkyl, —(C6-C36)alkenyl, —(C6-C36)cycloalkyl, wherein at least one of R2, R3 and R4 is not H; X is O or S; Y1 and Y2 are selected from S and O; m is 1 or 2, n is 0 or 1, p is 1 or 2, provided that m+n+p=3 and q=0.8 to 1.2*p, wherein the compound provides at least 48 ppm of phosphorus and a molar ratio phosphorus to nitrogen (P/N) in the range of about 0.40 to about 1.50.

主权项

1. A transmission fluid comprising a lubricant composition which is a mixture of:
(a) a major amount of lubricating oil; and (b) a compound having a phosphorus containing species and an amine having the formula I: or a solvate, hydrate, or proadditive thereof, wherein moietie(s) R1 is/are hydrocarbon groups and at least one of R1 is selected from the group consisting of: —(C1-C20)alkyl and —(C1-C20)alkenyl; R is selected from the group consisting of: —(C4-C20)alkyl and —(C4-C20)alkenyl; and wherein R2, R3 and R4 are independently selected from the group consisting of: —H, linear —(C10-C19) alkyl, branched —(C6-C15) alkyl, —(C6-C20) alkenyl, —(C6-C20) cycloalkyl, wherein at least one of R2, R3 and R4 is not H and contains 8 to 18 carbon atoms; X is O; Y1 and Y2 are independently selected from S and O provided that Y1 and Y2 are not both S; m is 1 or 2, n is 0 or 1, p is 1 or 2, with the proviso that m+n+p=3 and q=0.8 to 1.2*p, wherein the compound of formula I provides at least 50 ppm of phosphorus based on the total weight of the lubricant composition and wherein the compound of formula I provides a molar ratio phosphorus to nitrogen (P/N) in the range of from about 0.50 to less than 1.0.