Modified EPDM rubbers, the production thereof and the use thereo

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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525243, 525247, 525 71, 525 75, 525 86, 525289, 525290, 525313, 525314, 525315, 525316, C08L 906, C08L 5104, C08L 5302

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046862633

ABSTRACT:
The production of impact-resistant polystyrene with EPDM simplifies the process and produces improved products if a modified ethylene/propylene rubber consisting of styrene/butadiene- or diene polymers, ethylene, optionally propylene and an unconjugated diene are used as the elastifying component.
The modified EPDM rubbers consisting of (a) from 20 to 90% by weight of ethylene units, (b) from 1 to 25% by weight of units of a butadiene/styrene copolymer containing a quantity of from 10 to 90% by weight of styrene, (c) from 0 to 10% by weight of units of an unconjugated diolefin and (d) C.sub.3 -C.sub.18 .alpha.-monolefin units to make up the difference to 100% by weight, are a further subject of this invention.

REFERENCES:
patent: 3445543 (1969-05-01), Gruner
patent: 3494983 (1970-02-01), Diem
patent: 3652729 (1972-03-01), Brodoway
patent: 3953542 (1976-04-01), Halasa et al.
patent: 4369291 (1983-01-01), Arlt et al.
patent: 4386187 (1983-05-01), Grancio et al.

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