| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermoplastic elastomer composition having excellent flexibility and rubber elasticity at a high temperature, capable of having a wide range of hardness, and capable of producing a molded product having excellent creep resistant performance at a high temperature, mechanical strength, oil resistance, solvent resistance, heat resistance, weathering resistance, surface characteristics, etc. SOLUTION: This thermoplastic elastomer composition is obtained by dynamically crosslinking a mixture comprising components (i), (ii), and (iii). The component (i) contains (a) a hydrogenated block copolymer which is obtained by hydrogenating a block copolymer containing at least one polymer block A consisting mainly of a vinyl aromatic compound and at least one polymer block B consisting mainly of a conjugated diene compound and has an iodine value of 10-40g/100 g and a weight-average molecular weight of≥200,000, (b) a softening agent for a non-aromatic rubber, (c) an olefinic resin of peroxide decomposed type, (d) an organic peroxide, and (e) a crosslinking auxiliary. The component (ii) contains the softening agent for the non-aromatic rubber (b) in an amount of 50-250 pts.mass based on 100 pts.mass of the hydrogenated block copolymer (a). The component (iii) contains the olefinic resin of peroxide decomposed type (c) in an amount of 20-300 pts.mass based on 100 pts.mass of the copolymer (a). COPYRIGHT: (C)2004,JPO
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