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Preparation of phosphorus-containing polymers—XXVI: Dibenzophosphole-containing polyesters

✍ Scribed by H. Kondo; M. Sato; M. Yokoyama

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
380 KB
Volume
17
Category
Article
ISSN
0014-3057

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✦ Synopsis

New phosphorus-containing homo-and copolyesters were prepared from 2,8-dihydroxy-5phenyl-5H-dibenzophosphole 5-oxide, bisphenol A and diacid chlorides, and their solubility, thermal stability, flame resistance and photochemical stability were investigated. Most of the polyesters were obtained at relatively low viscosities. Incorporation of the dibenzophosphole ring into the polymer backbone was found to improve solubility in polar aprotic solvents, flame resistance, and stability to u.v. light. The dibenzophosphole-containing homo-and copolyesters had initial decomposition temperatures comparable to those of phosphorus-flee polyarylates.

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