Synthesis and characterization of polyesterimides containing ether linkages

Three novel dicarboxylic acids, bis-4,4′ -[N-4(4′-hydroxycarbonyl phenyleneoxy) phthalimido] diphenyl sulfone, bis-4, 4′ ‘-[N-4(4′ -hydroxycarbonyl phenyleneoxy) phthalimido] diphenyl methane, and bis-4, 4′ ‘-[N-4(4′ -hydroxycarbonyl phenyleneoxy) phthalimido] diphenyl ether, were synthesized, and several polyesterimides were prepared from diacid chlorides and bisphenols by solution polycondensation. The polymers were obtained in 65–88% yield and had inherent viscosities in the 0.18 to 0.64 dL/g range. The polymers were characterized by IR, elemental analysis, x-ray, TGA, DSC, and solubility tests. All the polymers were readily soluble in polar aprotic solvents and had a 10% weight loss temperature above 375°C in nitrogen. Copyright © 1993 by Marcel Dekker, Inc.