| 摘要 |
PURPOSE:To provide a polyamide resin obtained by the reaction of a dicarboxylic acid dihalide and a diamine, having specific structural formula, soluble in various organic solvents, and having high glass transition point. CONSTITUTION:The polyamide resin of formula III (n is 10-200) can be prepared by reacting one or more dicarboxylic acid dihalide of formula I (Ar is bivalent tetraphenylthiophene group, when Ar consists of >=2 kinds of groups, one of them is tetraphenylthiophene group and the others are bivalent aromatic group; X is halogen) with one or more diamine of formula II (R is bivalent organic group) in an organic solvent (e.g. N,N-dimethylacetamide). EFFECT:The resin is moldable easily, and has excellent heat resistance, electrical characteristics and mechanical characteristics. |
