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The synthesis and characterization of a series of novel poly(aryl amide imide)s based on o diphenyltrimellitic anhydride are described.The poly(aryl amide imide)s having inherent viscosities of 0.39-1.43dL/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 trsanition temperatures were in the range of 284-336℃,and the temperatures for 5% weight loss in nitrogen were above 468℃.
The synthesis and characterization of a series of novel poly (aryl amide imide) s based on o diphenyltrimellitic anhydride are described. Poly (aryl amide imide) s having inherent viscosities of 0.39-1.43 dL / g in N methyl 2 pyrrolidinone at 30 ° C. , were prepared by polymerization with aromatic diamines in N, N-dimethylacetamide and subsequent chemical imidization. All the polymers were amorphous, readily soluble in a polar polar solvents such as DMAC, NMP, DMF, DMSO, and m cresol, and could be cast to form flexible and tough films. The glass trsanition temperatures were in the range of 284-336 ° C, and the temperatures for 5% weight loss in nitrogen were above 468 ° C.