| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester elastomer resin composition having a good oil resistance, grease resistance, heat aging characteristics, resistance to fatigue from flexing when in contact with a high-temperature grease, blow moldability and melt retention stability. SOLUTION: A polyester elastomer resin composition is prepared by mixing, against 100 pts.wt. polyether ester block copolymer (A) containing as principal structural components a high-melting crystalline polymer segment (a) mainly comprising crystalline aromatic polyester units and a low-melting polymer segment (b) mainly comprising aliphatic polyether units, from 0.01 to 10 pts.wt epoxy compound (B) with a functionality of two or larger, from 0.01 to 5 pts.wt. aromatic amine antioxidant (C), from 0.01 to 5 pts.wt. hindered phenol antioxidants (D), from 0.01 to 5 pts.wt. sulfur antioxidant and/or from 0.01 to 5 pts.wt. phosphorus antioxidants (F). |
