| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester resin composition hardly generating a problem of drawdown during blow molding, excellent in thermal stability, capable of providing a blow molded article excellent in impact resistance with good productivity and excellent in recyclability so that an edge material during blow molding can successfully be molded even using blow molding again.SOLUTION: There is provided a polyester resin composition mainly containing a polyester resin having ethylene terephthalate as a main repeating unit and containing isophthalic acid of 2 to 20 mol% as a copolymerization component, having intrinsic viscosity of 0.7 to 1.4, a ratio between weight average molecular weight and number average molecular weight (weight average molecular weight/number average molecular weight) of 1.9 to 2.5 and containing a core-shell-type impact resistance improvement agent of 0.1 to 5 mass%. There is provided a polyester resin composition having carboxyl terminal group concentration of 20 equivalence/t or less.SELECTED DRAWING: None |
