High-notched-impact core-shell polymers having improved weather

Details High-notched-impact core-shell polymers having improved weather High-notched-impact core-shell polymers having improved weather

1981-10-08

1983-07-12

Seccuro, 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...

525 71, 525 80, 525 82, 525 83, 525305, 525902, C08L 5104, C08F27902, C08F26504

Patent

active

043931723

ABSTRACT:
A particulate graft polymer comprising (a) a core formed by a crosslinked homopolymer of a conjugated diene or a copolymer thereof with up to 10% by weight of styrene or acrylonitrile; (b) a first shell formed by a crosslinked homopolymer of an acrylic acid alkyl ester or a copolymer thereof with up to 30% by weight of vinyl monomers; (c) a second shell formed by a polymer of resin-forming monomers, a process for manufacturing these graft polymers by means of a multi-stage emulsion polymerization, and their application as molding compositions, optionally together with rigid thermoplastic resins.

REFERENCES:
patent: 3636138 (1972-01-01), Beer
patent: 3886232 (1975-05-01), Tanaka et al.
patent: 3900529 (1975-08-01), Beer
patent: 3956424 (1976-05-01), Murayama et al.
Chemical Abstracts, vol. 78, p. 51, No. 137322m (1973).
Chemical Abstracts, vol. 90, p. 32, No. 55728g (1979).

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