Synthesis and characterization of silicon-containing cardo polyesters

Abstract

New polyesters containing both silane and “cardo” groups were synthesized by solution polycondensation involving the reaction of bis(4-chlorocarbonylphenyl)dimethylsilane with cardo bisphenols, namely, phenolphthalein, phenolphthalimidine, and phenolphthalein anilide. Copolyesters were obtained by using different proportions of phenolphthalein and phenolphthalein anilide. Polyesters had inherent viscosities in the range 0.22–0.70 dL/g and were readily soluble in chlorinated hydrocarbons and polar aprotic solvents. Polyesters showed glass transition temperatures in the range 168–255°C as measured by DSC and thermogravimetric analysis indicated no weight loss below 416°C in a nitrogen atmosphere. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 1329–1335, 1997