Synthesis of Poly(aryl amide imide)s Derived from o-diphenyltrimellitic Anhydride

摘要

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. 43 dL/g in N-methyl-2-pyrrolidinone at 30 deg C, 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. He glass trsanition temperatures were in the range of 284-336 deg, and the temperature for 5 percent weight loss in nitrogen were above 468 deg C.