THERMOPLASTIC ELASTOMER COMPOSITION

WIPO Patent Application WO/2007/119390

A1

Disclosed is a thermoplastic elastomer composition which is composed of 35-50 parts by mass of a hydrogenated block copolymer (a) having a weight average molecular weight of 70,000-120,000, 30-50 parts by mass of a softening agent (b) for rubber, and 5-25 parts by mass of a polystyrene resin (c) having a weight average molecular weight of 100,000-400,000 (provided that the total of (a), (b) and (c) is 100 parts by mass). The hydrogenated block copolymer (a) is obtained by hydrogenating a block copolymer having at least two polymer block A's mainly containing a vinyl aromatic compound unit and at least one polymer block B mainly containing a conjugated diene unit. In this hydrogenated block copolymer (a), the vinyl aromatic compound unit is contained in an amount of 35-45% by mass, and not less than 50% of carbon-carbon double bonds respectively derived from the conjugated diene in the polymer block B is hydrogenated.

JP4363604	Elastomer composition with excellent scratch resistance
JP4040390	Polyolefin Recycling Method
JP2003277555	RESIN COMPOSITION AND METHOD FOR PRODUCING THE SAME

JOGO YOSUKE (JP)
MASUDA MIKIO (JP)
HIGASHIDA NOBORU (JP)
TORIGOE SHINICHI (JP)
TOKUCHI KAZUKI (JP)
MORIGUCHI NOBUHIRO (JP)

PCT/JP2007/055347

October 25, 2007

March 16, 2007

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KURARAY CO (JP)
JOGO YOSUKE (JP)
MASUDA MIKIO (JP)
HIGASHIDA NOBORU (JP)
TORIGOE SHINICHI (JP)
TOKUCHI KAZUKI (JP)
MORIGUCHI NOBUHIRO (JP)

C08L53/02; C08L25/00; C08L91/00

JP2006089546A	2006-04-06
JP2005232246A	2005-09-02
JP2004115753A	2004-04-15
JP2002363376A	2002-12-18
JPS57212249A	1982-12-27
JP2003509564A	2003-03-11
JP2006509089A	2006-03-16
JPH10195241A	1998-07-28

See also references of EP 2009055A4

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