THERMOPLASTIC OLEFIN ELASTOMER COMPOSITION

Title:

THERMOPLASTIC OLEFIN ELASTOMER COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2002/072690

Kind Code:

A1

Abstract:

A thermoplastic olefin elastomer composition which is obtained by dynamically heating 5 to 50 parts by weight of a polypropylene resin (A) and 50 to 95 parts by weight of an a-olefin copolymer (B) having a Mooney viscosity, ML¿1+4? (100 °C), of 60 to 250 in the absence of any crosslinking agent. It is characterized in that the glass transition temperature attributable to the resin (A) is lower than the glass transition temperature of the resin (A) alone and that the copolymer (B) is at least one member selected between the following (b-1) and (b-2). (b-1) An ethylene/$g(a)-olefin copolymer having an ethylene content of 51 to 60 mol%. (b-2) A propylene/$g(a)-olefin copolymer having a propylene content of 60 to 90 mol%.

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Inventors:

KOBAYASHI KYOKO (JP)
ITOU YUICHI (JP)
ONOGI TAKAYUKI (JP)
UCHIYAMA AKIRA (JP)

Application Number:

PCT/JP2002/002357

Publication Date:

September 19, 2002

Filing Date:

March 13, 2002

Export Citation:

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Assignee:

MITSUI CHEMICALS INC (JP)
KOBAYASHI KYOKO (JP)
ITOU YUICHI (JP)
ONOGI TAKAYUKI (JP)
UCHIYAMA AKIRA (JP)

International Classes:

C08L23/10; C08L23/16; C08L23/14; C08L91/00; (IPC1-7): C08L23/00; C08J3/24

Domestic Patent References:

WO1996006132A1

1996-02-29

Foreign References:

JP2001011247A	2001-01-16
JP2001011246A	2001-01-16

Other References: