| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin mandrel for the production of rubber hose which not only has high melt viscosity and excellent molding stability, but also has high rigidity and hydrolysis resistance, and also is excellent in recyclability.SOLUTION: The thermoplastic resin composition is obtained by blending 100 pts.wt. of resin component consisting of 5-70 wt.% of polyester block copolymer (A) having, as a main component, a high melting point crystalline polymer segment (a1) mainly consisting of crystalline aromatic polyester, and a low-melting polymer segment (a2) mainly consisting of an aliphatic polyether unit and/or aliphatic polyester unit, and 30-95 wt.% of polyester resin (B); an epoxy group-containing compound (C) in an amount satisfying the formula (I) Y/3000≤X≤Y/50 (wherein, X represents an amount of epoxy group-containing compound to be blended (part weight) and Y represents an epoxy-equivalent amount (g/eq) of epoxy group-containing compound.); and 0.1-10 pts.wt. of carbodiimide group-containing compound (D). |
