| 摘要 |
PROBLEM TO BE SOLVED: To provide a tube superior in performance (kink resistance) endurable against abnormal deformation such as buckling caused when bent in a ring and circular arc shape, and superior in flexibility. SOLUTION: This tube is composed of (a) a hydrogenation block copolymer having a glass transition temperature less than -45°C among hydrogenation block copolymers having one or more of polymer blocks A composed of a vinyl aromatic compound, having one or more of polymer blocks B composed of conjugate diene, having the content of the vinyl aromatic compound of 10 to 40 wt.%, and forming 70% or more of a carbon-carbon double bond of the blocks B composed of the conjugate diene by adding hydrogen, (b) a hydrogenation copolymer having a glass transition temperature of -45 to 30°C among hydrogenation copolymers composed of a vinyl aromatic compound and conjugate diene, having the content of the vinyl aromatic compound of 10 to 40 wt.%, and forming 70% or more of a carbon-carbon double bond of the conjugate diene by adding hydrogen, (c) an olefinic resin, and (d) a resin composition blended with a rubber softener. COPYRIGHT: (C)2004,JPO
|
