| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermoplastic polymer composition which is excellent in heat resistance and gives a molded article suitable especially for the use at high temperatures. SOLUTION: This composition comprises (a) 100 pts.wt. block copolymer which has at least two polymer blocks (A) formed from an aromatic vinyl compound and at least one polymer block (B) formed from a conjugated diene and having a degree of hydrogenation of carbon-carbon double bonds derived from the conjugated diene of 35% or higher and which has a content of structural units derived from the aromatic vinyl compound of 5-75 wt.% and a number average mol.wt. of 250,000-400,000, (b) 50-300 pts.wt. nonaromatic softener for rubber, and 10-100 ps.wt. propylene resin.
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