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Title:
BLOCK COPOLYMER
Document Type and Number:
Japanese Patent JP2015168750
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a block copolymer excellent in a melt flow rate, rebound resilience and balance in tensile elongation, and excellent in temperature dependence of an adhesive force of a sheet.SOLUTION: A block copolymer includes: a polymer block (A) having a vinyl aromatic monomer unit as the main constituent; a polymer block (B) having a conjugated diene monomer unit as the main constituent; and a random polymer block (C) including a vinyl aromatic monomer unit and a conjugated diene monomer unit. The percentage content of the polymer block (A) is 5-34 mass%, the percentage content of the polymer block (B) is 40-80 mass%, and the percentage content of the random polymer block (C) is 4-30 mass%. The percentage content of the vinyl aromatic monomer unit is 10-35 mass%, in the polymer block (B), a vinyl bond amount is 8 mass% or more to 49 mass%, and in the random polymer block (C), the content of a short linkage vinyl aromatic monomer polymerization part comprising 1-6 vinyl aromatic monomer unit(s) is 70 mass% or more, based on 100 mass% of the content of the vinyl aromatic monomer unit.

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Inventors:
SHIROMOTO TAKAYUKI
HISASUE TAKAHIRO
Application Number:
JP2014044018A
Publication Date:
September 28, 2015
Filing Date:
March 06, 2014
Export Citation:
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Assignee:
ASAHI KASEI CHEMICALS CORP
International Classes:
C08F297/04
Domestic Patent References:
JPH1135645A1999-02-09
JPH10265537A1998-10-06
JPS57100112A1982-06-22
JPS4611512B
JPS57100112A1982-06-22
JPS60212413A1985-10-24
JPS60221413A1985-11-06
JPH0593125A1993-04-16
JPH10265537A1998-10-06
JPH1135645A1999-02-09
JPS4611512B
JPS60212413A1985-10-24
JPS60221413A1985-11-06
JPH0593125A1993-04-16
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Kazuhiko Naito



 
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