Title:
HYDROGENATED BLOCK COPOLYMER, POLYPROPYLENE RESIN COMPOSITION, AND MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2017/043532
Kind Code:
A1
Abstract:
Provided is a hydrogenated block copolymer including in the molecule a polymer block (C) composed mainly of a conjugated diene compound, a polymer block (B) composed mainly of a conjugated diene compound, and a polymer block (S) composed mainly of a vinyl aromatic compound, wherein in the hydrogenated block copolymer, the polymer block (C) content is 1-20% by mass, the polymer block (B) content is 69-98% by mass, the polymer block (S) content is 1-15% by mass, the pre-hydrogenation vinyl bond level of the polymer block (C) is 1-25 mol%, the pre-hydrogenation vinyl bond level of the polymer block (B) is 60-100 mol%, the hydrogenation rate of the hydrogenated block copolymer is 80 mol% or higher, the tanδ peak obtained by measuring the dynamic viscoelasticity (1 Hz) of the hydrogenated block copolymer ranges from over -45°C to 10°C or lower, the value of the tanδ peak is 1.0 or higher, and the half-value width of the tanδ peak is 20°C or lower.
Inventors:
KUSANOSE YASUHIRO (JP)
ICHINO HIROYUKI (JP)
YAMAMOTO MASASHI (JP)
FUJIWARA MASAHIRO (JP)
HOSHINA TOSHIKAZU (JP)
ICHINO HIROYUKI (JP)
YAMAMOTO MASASHI (JP)
FUJIWARA MASAHIRO (JP)
HOSHINA TOSHIKAZU (JP)
Application Number:
PCT/JP2016/076306
Publication Date:
March 16, 2017
Filing Date:
September 07, 2016
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
C08F297/04; B32B27/00; C08L23/10; C08L53/02; C09J7/20; C09J11/06; C09J153/02
Domestic Patent References:
| WO2010104174A1 | 2010-09-16 |
Foreign References:
| JP2016196583A | 2016-11-24 | |||
| JPH05170844A | 1993-07-09 | |||
| JPH02133406A | 1990-05-22 | |||
| JPH0593125A | 1993-04-16 | |||
| JP2009084461A | 2009-04-23 |
Other References:
See also references of EP 3348591A4
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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