New poly(4-Dichloro)maleimides: III. Synthesis and characterization of poly[ether-ester-azomethine-(4-chloro) maleimides] and poly(azomethin ester-aspartimides)

摘要

New poly[(N-ester-azo)-3-ether-4-chloro)maleimides] and poly(azomethin-ester-aspartimides) were synthesized by the reaction of N-[4-(formylphenoxy carboxylphenyl)]-3-(4-formylphenoxy)-4-chloromaleimide (3a) or N-[4-formylphenoxycarbonylphenyl)maleimide (3b) with various diamines. IR and elemental analyses confirmed the structures of the resulting polymers. A series of model compounds were synthesized to facilitate confirmation of the polymer structures. The polymers possess inherent viscosities in the range 0.17-0.42 dl g~(-1), solubility in aprotic dipolar solvents and 5% weight loss at temperatures above 300 ℃.