Title:
THERMOPLASTIC ELASTOMER COMPOSITION, AND MOLDED PRODUCT THEREOF
Document Type and Number:
WIPO Patent Application WO/2011/043231
Kind Code:
A1
Abstract:
Disclosed is a thermoplastic elastomer composition comprising: (A) 100 parts by mass of a hydrogenated block copolymer which is produced by hydrogenating a block copolymer comprising at least one polymer block mainly composed of a vinyl aromatic compound and at least one polymer block mainly composed of a conjugated diene compound and which has a weight average molecular weight of 300,000 to 450,000; (B) 170 to 270 parts by mass of a non-aromatic-rubber-softening agent which comprises (i) 30 to 80 mass% of a non-aromatic-rubber-softening agent having a kinematic viscosity of 90 mm2/sec or less at 40˚C and a Mw/Mn ratio of 1.3 or less and (ii) 70 to 20 mass% of a non-aromatic-rubber-softening agent having a kinematic viscosity of 350 to 400 mm2/sec at 40˚C and a Mw/Mn ratio of 1.3 or less; and (C) 3 to 15 parts by mass of a polypropylene. The thermoplastic elastomer composition has a Shore A harness of 4 to 12 degrees.
Inventors:
SANO RYOSUKE (JP)
Application Number:
PCT/JP2010/066901
Publication Date:
April 14, 2011
Filing Date:
September 29, 2010
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
SANO RYOSUKE (JP)
SANO RYOSUKE (JP)
International Classes:
C08L53/02; C08L23/12; C08L91/00
Foreign References:
| JP2003105311A | 2003-04-09 | |||
| JP2006111756A | 2006-04-27 | |||
| JP2002225303A | 2002-08-14 | |||
| JP2004137479A | 2004-05-13 | |||
| JPH09226972A | 1997-09-02 | |||
| JPH09202857A | 1997-08-05 | |||
| JPH09235477A | 1997-09-09 |
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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