Highly grafted, multi-functional olefin copolymer vi modifiers

Details Highly grafted, multi-functional olefin copolymer vi modifiers Highly grafted, multi-functional olefin copolymer vi modifiers

C - Chemistry, Metallurgy

08

F

C08F 8/32 (2006.01) C08F 255/00 (2006.01) C08F 255/04 (2006.01) C10M 133/52 (2006.01) C10M 133/58 (2006.01) C10M 143/00 (2006.01) C10M 149/04 (2006.01) C10M 149/10 (2006.01)

Patent

CA 2255412

A novel additive comprising a highly grafted, multi-functional olefin copolymer comprising a graft and amine-derivatized copolymer prepared from ethylene and at least one C3 to C23 alpha-monoolefin and, optionally, a polyene, wherein the copolymer of ethylene and at least one C3 to C23 alpha-monoolefin has grafted thereon from 0.3 to 0.75 carboxylic groups per 1000 number average molecular weight units of olefin copolymer and wherein the olefin copolymer has a number average molecular weight of between 20,000 and 150,000, and lubricating oil concentrates and compositions containing the same are provided.

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