Patent ID: 8835366
Filing Date: 2014-09-16
Classification: C08G,C10M,C10N

Abstract:
1. A lubricant composition for use in engine oil applications comprising: i) a first base stock selected from a Group I base stock, a Group II base stock and a combination thereof at 50 to 80 wt % of the lubricant composition, ii) a block copolymer, comprising: an “A” block of a functionalized hydrocarbon moiety including one or more functional end groups selected from: epoxides, amines, acids, acid chlorides, acid anhydrides, halogens, vinyl or vinylidene double bonds, aromatic rings and thiols; and a “B” block of a functionalized polyether moiety including one or more functional end groups selected from: epoxides, amines, acids, acid chlorides, acid anhydrides, halogens, vinyl or vinylidene double bonds, aromatic rings and thiols, wherein the end group of the polyether moiety is different than the end group of the hydrocarbon moiety, wherein the hydrocarbon moiety and the polyether moiety are copolymerizable therewith, wherein the block copolymer ranges from 1 to 10 wt % of the lubricant composition, iii) a viscosity modifier at 3 to 15 wt % of the lubricant composition selected from polymers and copolymers of methacrylate, butadiene, olefins and alkylated styrenes, and iv) an additive package including a combination of antioxidants, dispersants, detergents, friction modifiers and antiwear agents, wherein the additive package ranges from 2 to 30 wt % of the lubricant composition.