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Synthesis of polyphosphates by the polyaddition of bisphenol-S diglycidyl ether and aryl phosphorodichloridates

✍ Scribed by Der-Jang Liaw

Book ID: 101270216
Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 109 KB
Volume: 35
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(19970915)35:12<2365::aid-pola5>3.0.co;2-u

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✦ Synopsis

In this study, we synthesized polyphosphates with reactive pendant chloromethyl groups by an addition reaction of the diglycidyl ether of bisphenol-S (bisphenol-S epoxy, BPSE) with aryl phosphorodichloridates. The polyphosphates obtained were characterized by IR, 1 H NMR spectra, elemental analysis, TGA, DSC, X-ray diffraction, and molar mass measurement. The polyaddition proceeded very smoothly in aromatic solvents catalyzed by quaternary ammonium or phosphonium salts such as tetrabutylammonium bromide and tetrabutylphosphonium bromide to produce a polymer having a high molecular weight. Polymer B, containing a bromine atom in the phenyl ring side chain, has the higher T g value (T g Å 58ЊC) than the polyphosphate derived from phenoxy dichlorophosphate (PDCP). Polymer A derived from PDCP begins to lose 10% of its mass at 278ЊC, and the mass percentage remaining at 700ЊC is 44% under nitrogen. X-ray diffraction patterns revealed that all the subsequent polyphosphates are amorphous.

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