Patent ID: 9051529
Filing Date: 2015-06-09
Classification: C10M,C10N

Abstract:
1. A lubricant composition comprising: (a) a mineral oil of lubricating viscosity having a viscosity index of at least about 105 and having a kinematic viscosity at 100° C. of less than about 7.0 mm (b) about 0.1 to about 2 weight percent of a friction modifier represented by the structure where n and m are independently integers of 1 to 5; X is an aliphatic or alicyclic group, or an aliphatic or alicyclic group containing an oxygen atom in the carbon chain, or a substituted group of the foregoing types, said group containing up to 6 carbon atoms and having n+m available points of attachment; each Y is independently —O—, >NH, or >NR 1 or two Ys together representing the nitrogen of an imide structure R—N< formed between two carbonyl groups; each R and R 1 are independently hydrogen or a hydrocarbyl group, provided that at least one R or R 1 group is a hydrocarbyl group; each R 2 is independently hydrogen, a hydrocarbyl group, or an acyl group, further provided that at least one —OR 2 group is located on a carbon atom of X that is α or β to at least one of the —C(O)—Y—R groups; (c) about 0.5 to about 4 weight percent of a poly(meth)acrylate viscosity modifier polymer comprising about 2 to about 35 weight percent monomer units of methyl (meth)acrylate, 0 to about 10 weight percent monomer units of one or more C (d) 0 to about 500 parts per million by weight of molybdenum in the form of an oil-soluble molybdenum compound; and (e) 0 to about 200 parts per million by weight of boron in the form of an oil-soluble boron compound.