Process for the preparation of rubber-modified thermoplastic res

Details Process for the preparation of rubber-modified thermoplastic res Process for the preparation of rubber-modified thermoplastic res

1980-01-16

1981-05-19

Levin, Stanford M.

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

Synthetic resins

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

525264, 525289, 525316, C08F25506

Patent

active

042686385

ABSTRACT:
A process for the preparation of a rubber-modified thermoplastic resin, which comprises treating an ethylene-propylene-non-conjugated diene copolymer rubber with a peroxide in a hydrocarbon or halogenated hydrocarbon solvent to obtain a rubber solution with a rubber gelation degree of not more than 5% and containing substantially no unreacted peroxide, adding to this rubber solution a vinyl monomer consisting of an aromatic alkenyl compound and a polar vinyl compound, and heating the resulting mixture to graft-copolymerize the monomer on the rubber. The resin obtained according to this process is free of fish eyes and proof against delamination of shaped article and has excellent mechanical properties, excellent appearance when shaped and high weather resistance.

REFERENCES:
patent: 3489821 (1970-01-01), Witt et al.
patent: 3489822 (1970-01-01), Witt et al.
Plasdoc 10379v/06.

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