A new chlorocarbonylimide of disaccharindicarboxylic acid was synthesized by condensation of imides of saccharin-6-carboxylic acid with alkyl- and alkylaryl bishalogenides. Poly(ester sulfomide), soluble in organic solvents, was synthesized by polycondensation of chlorocarbonylimide with bisphenol. DTA and TGA investigations have shown that poly(ester sulfoimide)s were stable at temperatures up to 300 degrees C-345 degrees C. (c) 2006 Wiley Periodicals, Inc.