Blends of polymers particularly polycarbonates acrylate-modified

Details Blends of polymers particularly polycarbonates acrylate-modified Blends of polymers particularly polycarbonates acrylate-modified

1991-04-16

1992-05-12

Bleutge, John C.

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

Synthetic resins

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

525 64, 525 66, 525 71, 525 75, 525 80, 525 84, C08L 3312, C08L 6900, C08L 5104, C08L 2706

Patent

active

051129094

ABSTRACT:
Modified rubber compositions comprise, by weight, about 15-60% of a highly saturated aliphatic rubber, such as ethylene-propylene-diene rubber, about 25-80% of preferably non-nitrogenous acrylate monomer units; and less than about 5% multi-functional monomer units. The compositions exist as amorphous heterogeneously dispersed phases. The first phase comprises the copolymer rubber, to which polymers of at least 10%, preferably 20%, and more preferably 30% of the other monomer units are grafted. The second phase comprises the other monomers polymerized as homo and copolymers, not grafted to the rubber.
The modified rubber composition, preferably non-nitrogenous polyacrylate polymer, and another polymer are mixed together to form a polymer blend having higher impact strength and other important properties.

REFERENCES:
patent: 4419491 (1983-12-01), Sakano
patent: 4461868 (1984-07-01), Lindner
patent: 4550138 (1985-10-01), Paddock
patent: 4656225 (1987-04-01), Boutni
patent: 4788250 (1988-11-01), Kitahara

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