An aromatic polyamide comprising (1) a unit of the formula: ##STR1## and (2) a unit of the formula: ##STR2## and being excellent in strength, rigidity and heat resistance and improved in light resistance, flexibility and wear resistance, which can be produced by polycondensation of a diamine component comprising N,N'-bis(p-aminobenzoyl)-ethylenediamine and p-phenylenediamine, the content of the N,N'-bis (p-aminobenzoyl)ethylenediamine being from about 0.6 to 50 mol %, with a dicarboxylic acid component comprising terephthalic acid or its reactive derivative in a substantially equimolar amount to the diamine component in an amide polar solvent.
一种芳香族聚酰胺,包括(1)式为:##STR1##的单元和(2)式为:##STR2##的单元,具有优异的强度、刚度和耐热性,并在光线抗性、柔韧性和耐磨性方面得到改善。该聚合物可通过将含有N,N'-双(对
氨基苯甲酰)-
乙二胺和
对苯二胺的二胺组分与含有苯二
甲酸或其反应衍
生物的二
羧酸组分在酰胺极性溶剂中进行聚缩合反应制备,其中N,N'-双(对
氨基苯甲酰)-
乙二胺的含量为约0.6至50摩尔%。