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1. (WO2001085818) BLOCK COPOLYMER AND COMPOSITION CONTAINING THE COPOLYMER

Pub. No.:    WO/2001/085818    International Application No.:    PCT/JP2001/003847
Publication Date: Nov 15, 2001 International Filing Date: May 8, 2001
IPC: C08F 8/04
C08F 297/04
C08L 23/02
C08L 23/06
C08L 23/10
C08L 53/02
C09J 123/02
C09J 153/02
Applicants: ASAHI KASEI KABUSHIKI KAISHA

SASAGAWA, Masahiro

TAKAYAMA, Shigeki

NAKAJIMA, Shigeo

Inventors: SASAGAWA, Masahiro

TAKAYAMA, Shigeki

NAKAJIMA, Shigeo

Title: BLOCK COPOLYMER AND COMPOSITION CONTAINING THE COPOLYMER
Abstract:
A hydrogenated block copolymer which gives a polyolefin resin composition capable of giving a molded article having an excellent balance between impact resistance and moldability and gives a pressure-sensitive adhesive composition excellent in balance among pressure-sensitive adhesive properties and in melt viscosity stability at high temperatures. The hydrogenated block copolymer is a product of hydrogenation of a block copolymer which has at least one polymer block derived mainly from a vinylaromatic hydrocarbon and at least one polymer block derived mainly from a conjugated diene compound and has a combined vinyl content, V (%), of 37 to 70%, excluding 70%, based on the conjugated diene compound, wherein (a) the total degree of hydrogenation, H (%), of the unsaturated double bonds based on the conjugated diene compound satisfies V