Thermoplastic molding material

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525 68, 525 91, 525905, C08L 500, C08L 504

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active

046476210

ABSTRACT:
A thermoplastic molding material comprises copolymers I and II.
Copolymer I is a high-impact (graft) copolymer which is derived from a monovinyl-aromatic monomer and a polymer or copolymer predominantly containing polymerized 1,3-diene units, and is present in a proportion of 0.1-1.0% by weight, based on the molding material.
Copolymer II is a block copolymer with star-shaped branching, ie. a radial block copolymer, having an average of more than two branches per molecule. It is substantially derived from 55-80% by weight of a monovinyl-aromatic monomer and 20-45% by weight of a 1,3-diene monomer.
The molding material may contain conventional assistants and is used for the production of blown film.

REFERENCES:
patent: 4075285 (1978-02-01), Tabana et al.
patent: 4214056 (1980-07-01), Lavengood
patent: 4256853 (1981-03-01), Naylor et al.
patent: 4386125 (1983-05-01), Shiraki et al.

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