Patent ID: 9534187
Date: 2017-01-03
CPC Classifications: C10M,C10N

Claim:
1. A lubricating composition comprising an oil of lubricating viscosity and an additive comprising an ester, thioester, amide, or imide of a carboxylic acid of Formula (1), (3), (4), or any combination thereof wherein the carbonyl carbon of the acid is attached directly or through a divalent hydrocarbyl linkage to an aromatic moiety wherein said aromatic moiety includes two or more hydroxy-groups, alkoxy-groups, or mixtures thereof, with the proviso that if said aromatic moiety consists of a single ring, then no two hydroxy-groups, alkoxy-groups, or mixtures thereof are located on adjacent carbon atoms of said aromatic ring, wherein Formula (1) is: wherein a is an integer from 2 to 4; R Formula (3) is: where X is —O—, —S—, or —NR Formula (4) is: where a is 0 to 2, b is 0 to 2, and a+b is 2 to 4; each R wherein said additive is present at 0.01 wt % to less than 1 wt % of the lubricating composition; and wherein said oil of lubricating viscosity comprises at least one API Group II or Group III oil.