C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
253/102, 44/19,
C08F 255/02 (2006.01) C08F 255/00 (2006.01) C08F 257/02 (2006.01) C08F 279/02 (2006.01) C10L 1/22 (2006.01) C10L 1/236 (2006.01) C10M 149/04 (2006.01) C10M 149/06 (2006.01) C10M 149/08 (2006.01) C10M 149/10 (2006.01)
Patent
CA 1088694
Abstract of the Disclosure This invention relates to a method for preparing graft copolymers having 2-vinylpyridine branches (or other nitrogen- containing branches) on a backnone consisting of an ethylene/propylene copolymer or an ethylene/propylene/diene terpolymer or other polyolefinic backbone. These graft copolymers are soluble in oil, whether of mineral (petroleum) origin or of synthetic nature, and impart thereto improved properties. This invention further relates to lubricating oil compositions and hydrocarbon fuel compositions containing the graft copolymers. They impart several beneficial properties to these fluids, in particular improvements in disper- sancy but also enhanced viscosity and viscosity/temperature relation- ships. The graft copolymers, when added to the oil, yield lubricants which are excellent dispersants for sludge formed in spark ignition and compression ignition engines.
255884
Galluccio Richard A.
Stambaugh Robert L.
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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