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基于新型邻二苯基取代偏苯三酸酐合成了粘度在0.39～1.43系列聚芳酰胺酰亚胺,新型无定型聚合物在极性非质子溶剂DMAC,NMP,DMF,DMSO等中有良好的溶解性. 其玻璃化转变温度在284～336℃. 5 %热失重温度大于468℃.“,”The synthesis and characterization of a series of novel poly(aryl amide-imide)s based on o-diphenyltrimellitic anhydride are described. The poly(aryl amideimide)s having inherent viscosities of 0.39～1.43 dL/g in N-methyl-2-pyrrolidinone at 30℃, were prepared by polymerization with aromatic diamines in N, N-dimethylacetamide and subsequent chemical imidization. All the polymers were amorphous, readily soluble in aprotic polar solvents such as DMAC, NMP, DMF, DMSO, and m-cresol, and could be cast to form flexible and tough films. The glass transition temperatures were in the range of 284～336℃, and the temperatures for 5% weight loss in nitrogen were above 468℃.