Graft copolymers, method of making and compositions...

Details Graft copolymers, method of making and compositions... Graft copolymers, method of making and compositions...

C - Chemistry, Metallurgy

08

F

C08F 279/02 (2006.01) C08F 255/00 (2006.01) C08F 255/02 (2006.01) C08F 255/04 (2006.01) C08F 257/02 (2006.01) C08F 259/00 (2006.01) C08L 51/00 (2006.01) C10M 143/02 (2006.01) C10M 143/04 (2006.01) C10M 143/10 (2006.01) C10M 143/12 (2006.01) C10M 149/00 (2006.01) C10M 151/00 (2006.01) C10M 151/04 (2006.01)

Patent

CA 2490476

Graft copolymers, particularly useful as dispersant viscosity index improvers in lubricating oil compositions have a polymer backbone selected from is selected from the group consisting of olefin polymers, diene polymers, vinyl polymers and vinylidene polymers, is grafted with an amine selected from N-p-diphenylamine,1,2,3,6- tetrahydrophthalimide; 4-anilinophenyl methacrylamide; 4-anilinophenyl maleimide; 4- anilinophenyl itaconamide; acrylate and methacrylate esters of 4- hydroxydiphenylamine; the reaction product of p-aminodiphenylamine or p- alkylaminodiphenylamine with glycidyl methacrylate; the reaction product of p- aminodiphenylamine with isobutyraldehyde, derivatives of p- hydroxydiphenylamine; derivatives of phenothiazine; vinylogous derivatives of diphenylamine; and mixtures thereof and may be prepared in a single step process using solution or bulk grafting conditions.

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