Solid sheared polymer blends and process for their preparation

Details Solid sheared polymer blends and process for their preparation Solid sheared polymer blends and process for their preparation

C - Chemistry, Metallurgy

08

L

C08L 23/16 (2006.01) C08F 8/50 (2006.01) C08L 51/06 (2006.01) C10M 143/02 (2006.01) C10M 143/04 (2006.01) C10M 145/10 (2006.01) C10M 149/06 (2006.01) C10M 149/10 (2006.01) C10M 151/02 (2006.01) C10M 155/02 (2006.01)

Patent

CA 2128183

ABSTRACT A blend and a process for producing that blend in which a high ethylene content ethylene-propylene polymer and a lower ethylene content ethylene-propylene polymer are subjected to simultaneous blending and shearing to reduce their molecular weights and molecular weight distribution and to yield a product that can be recovered as a solid using conventional plastic processing equipment. The sheared blend of polymers can function as a shear stable viscosity index improver with improved lower temperature properties.

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