| 摘要 |
PURPOSE:A resin composition having improved moldability, chemical and mechanical properties, heat and heat aging resistance, consisting of an aromatic copolyester, a polyamide, and a polyester-polyether block copolymer. CONSTITUTION:A resin composition consisting of (A) an aromatic copolyester prepared from (a) terephthalic and isophthalic acids or a mixture of their functional derivatives (a mol. ratio of terephthalic to isophthalic acid group is 9:1-1:9) and (b) bisphenols shown by the formula (X is O, S, SO2, CO, alkylene, alkylidene; R1, R2,R3,R4,R1',R2',R3',R4' are H, halogen atom, or hydrocarbon group), (B) a polyamide, and (C) a polyester-polyether block copolymer. 4,4'-dihydroxybiphenyl ether, etc. may be cited as the bisphenols. |
