| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermoplastic polymer composition which is a composition containing a polyacetal resin and exhibits a high impact resistance over a wide temperature range. SOLUTION: The thermoplastic polymer composition comprises (i) a polyacetal resin (I) and (ii) a block copolymer (II) having an aromatic vinyl compound/conjugated diene compound block copolymer block or a hydrogenated product thereof (A) and a polyurethane block (B), wherein (a) [the weight of (I)] : [the weight of (II)] = 95:5 to 30:70, and (b) the conjugated diene compound polymer block in the block copolymer (II) is at least one polymer block selected from the group consisting of an isoprene polymer block in which the rate of the total of 1,2-bonds and 3,4-bonds is at least 30 mol%, an isoprene/butadiene copolymer block, and a butadiene polymer block. COPYRIGHT: (C)2004,JPO
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