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

1994-11-09

1995-09-19

Seccuro, Jr., Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525240, 525211, 525197, 525 84, 525 80, 525 75, 525 74, 525 73, 525 71, C08L 2316, C08L 5104, C08L 5106

Patent

active

054516366

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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