Thermoplastic elastomer composition

Details Thermoplastic elastomer composition Thermoplastic elastomer composition

C - Chemistry, Metallurgy

08

L

400/4910

C08L 23/16 (2006.01) C08K 5/34 (2006.01) C08L 23/10 (2006.01)

Patent

CA 1335010

A thermoplastic elastomer composition which comprises a mixture (F) comprising 100 parts by weight of a mixture (C) essentially consisting of 24 - 80 parts by weight of an oil-extended olefinic copolymer rubber (A) and 20 - 76 parts by weight of an olefinic plastic (B); said oil-extended olefinic copolymer rubber (A) comprising 100 parts by weight of an olefinic copolymer rubber (a) having a Mooney viscosity (ML1+4 100°C) of 90 - 200 and a propylene content of 10 - 60 % by weight and 20 - 60 parts by weight of a mineral oil softener (b), and 0.1 - 3 parts by weight of a bismaleimide compound (D), said mixture (F) being dynamically heat- treated in the presence of an organic peroxide (E). The thermoplastic elastomer composition has excellent injection moldability and mat appearance. In the production of the thermoplastic elastomer composition, kneading is easy to carry out and a time required for the kneading is considerably reduced.

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