SYNTHESIS AND CHARACTERIZATION OF NOVEL POLY(AMIDE IMIDE)S

Novel poly(amide imide)s having inherent viscosities in the range 0.89 -1.56 dL/g were prepared by the method of low temperature polycondensa tion in solution of N,N-dimethylacetamide (DMA) from aromatic diamines and a new monomer: N-[4 hloroformyl-phenyl)-4'-iminobenzoyl]trimellit imide chloride. The polymers were soluble in polar aprotic solvents an d essentially amorphous. They showed glass transition temperatures in the range 310-350 degrees C and decomposition temperatures of 450-460 degrees C. Polymer films, fabricated by casting polymer solutions in D MA, showed tensile strengths in the range 70-90 MPa and moduli values between 3000-4000 MPa. (C) 1996 John Wiley & Sons, Inc.