THERMOPLASTIC ELASTOMER COMPOSITION

Title:

THERMOPLASTIC ELASTOMER COMPOSITION

Document Type and Number:

WIPO Patent Application WO/1991/019764

Kind Code:

A1

Abstract:

A thermoplastic olefinic elastomer composition prepared by dynamically curing in the presence of 0.5 to 15 parts by weight of a reactive alkylphenyl/formaldehyde resin as a curing agent a composition which comprises: (a) 100 parts by weight of a high-molecular copolymer rubber comprising an ethylene/$g(a)-olefin/nonconjugated diene copolymer rubber and having a Mooney viscosity, ML�1+4?(125 �C), of 40 or above when 100 parts by weight thereof is mixed with 75 parts by weight of a mineral oil softener, (b) 10 to 500 parts by weight of a crystalline ethylene/propylene block copolymer resin having a melt flow rate of 10 to 50, (c) 3 to 300 parts by weight of a mineral oil softener, and (d) 5 to 100 parts by weight of a low-molecular propylene homopolymer resin having a number average molecular weight of 2,000 to 20,000, and wherein the weight ratio of the resin (d) to the resin (b) is 0.8 or less, to thereby highly curing the rubber (a). The composition is excellent in injection moldability, appearance, mechanical properties, low anisotropy, form retention and oil resistance, and can be suitably used in automotive parts and other applications.

More Like This:

JPH0827870

SANITARY DEVICE

Inventors:

TANAKA TERUTAKA (JP)

Application Number:

PCT/JP1991/000779

Publication Date:

December 26, 1991

Filing Date:

June 11, 1991

Export Citation:

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Assignee:

MONSANTO JAPAN (JP)

International Classes:

C08L23/10; C08L23/12; C08L23/16; C08L53/00; C08L91/00; (IPC1-7): C08K5/01; C08L23/12; C08L23/16; C08L53/00; C08L91/00

Foreign References:

JPS61247747A	1986-11-05
JPS59221346A	1984-12-12
JPS5535419B2	1980-09-13

Other References: