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Synthesis and characterization of silicon-containing cardo polyesters

✍ Scribed by M. D. Joshi; A. Sarkar; O. S. Yemul; P. P. Wadgaonkar; S. V. Lonikar; N. N. Maldar

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 188 KB
Volume: 64
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19970516)64:7<1329::aid-app12>3.0.co;2-s

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✦ Synopsis

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 168-255ЊC as measured by DSC and thermogravimetric analysis indicated no weight loss below 416ЊC in a nitrogen atmosphere.

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