Improved olefinic copolymer compositions for viscosity...

Details Improved olefinic copolymer compositions for viscosity... Improved olefinic copolymer compositions for viscosity...

C - Chemistry, Metallurgy

10

M

C10M 143/04 (2006.01) C08F 210/06 (2006.01) C08L 23/14 (2006.01)

Patent

CA 2733254

Lube oil compositions and methods for making the same are provided. The lubricating oil composition can include at least one propylene-based polymer comprising 60 wt% to 98 wt% propylene derived units, other units derived from one or more other alpha olefins, and a base oil. The propylene-based polymer can have a triad tacticity of 90% or more, a heat of fusion of less than 80 J/g, and a weight average molecular weight (Mw) as measured by GPC of from 70,000 to 250,000.

L'invention porte sur des compositions d'huile lubrifiante et sur des procédés permettant de les fabriquer. La composition d'huile lubrifiante peut comprendre au moins un polymère à base de propylène comprenant 60 % en poids à 98 % en poids d'unités issues du propylène, d'autres unités issues d'une ou plusieurs autres alpha-oléfines, et une huile de base. Le polymère à base de propylène peut avoir une tacticité de triade de 90 % ou plus, une chaleur de fusion de moins de 80 J/g, et une masse moléculaire moyenne en poids (Mw) telle que mesurée par chromatographie sur gel (GPC) de 70 000 à 250 000.

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