| 摘要 |
PURPOSE:To provide the titled novel injection-moldable copolymer having high thermal stability as well as fluidity, giving a molded article having high toughness, and containing a specific trifunctional aromatic amide imide unit, a bifunctional aromatic amide and a bifunctional aromatic unit at specific ratios. CONSTITUTION:The objective copolymer composed of (A) the structural unit of formula I (Z is trifunctional aromatic group wherein 2 functional groups in the 3 functional groups are bonded to the adjacent carbon atoms), (B) the structural unit of formula II (Ar is aromatic group; R1 is methyl; b is 0, 1 or 2; X is phenylene, etc.) and (C) the structural unit of formula III, wherein the amount of the component B+C is 1mol per 1mol of the component A, the component C is 0.95-0mol per 0.05-1mol of the component B, the component A is bonded alternately with the component B or component C, and the amount of the bivalent residue of formula V is 0.95-0.30mol per 0.05-0.70mol of the bivalent residue of formula IV. The copolymer can be produced by charging 4,4'-diaminodiphenyl ether and terephthaloyl-m-aminoanilide in a reactor, adding a solvent thereto, cooling the mixture, and reacting with trimellitic anhydride monochloride, etc.
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