Modified epdm rubbers, the production thereof and the use...

Details Modified epdm rubbers, the production thereof and the use... Modified epdm rubbers, the production thereof and the use...

C - Chemistry, Metallurgy

08

F

400/2028, 400/30

C08F 271/02 (2006.01) C08F 279/02 (2006.01) C08F 287/00 (2006.01) C08L 25/06 (2006.01) C08L 51/06 (2006.01)

Patent

CA 1257426

A B S T R A C T Modified EPDM rubbers, the production thereof and the use thereof for the production of impact-resistant vinyl poly- mers and vinyl polymers obtained in this manner The production of impact-resistant polystyrene with EPDM simplifies the process and produces improved products if a modified ethylene/propylene rubber consis- ting 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 con- taining a quantity of from 10 to 90 % by weight of sty- rene, (c) from 0 to 10 % by weight of units of an uncon- jugated diolefin and (d) C3-C18 .alpha.-monolefin units to make up the difference to 100% by weight, are a further subject of this invention.

486136

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