Synthesis of novel fluorine containing poly(arylene ether-pyrazoles)
- Virginia Commonwealth Univ., Richmond, VA (United States)
Several novel poly(arylene ether-pyrazoles) (PAE-pyrazoles) containing N-tetrafluorophenyl or octafluorobiphenal groups have been prepared. Polymers containing N-tetrafluorophenyl groups were prepared from two new monomers namely, 3,5-bis(4-hydroxyphenyl)-1-(2,3,5,6-tetrafluorophenyl)pyrazole and 3,5-bis(4-hydroxyphenyl)-4-phenyl-1-(2,3,5,6-tetrafluorophenyl)pyrazole, respectively. Several bisphenol pyrazole monomers were polymerized with decafluorobiphenyl under controlled reaction conditions to obtain PAE-pyrazoles containing octafluorobiphenyl moieties. All polymers were obtained as white granular or fibrous solids with inherent viscosities of 0.19-1.40 dL/g, and were stable up to 480{degrees}C in air and helium. In general, the thermal properties of fluorine containing PAE-pyrazoles were comparable or lower than their corresponding non-fluorine containing systems. The preparation and thermal properties of these polymers will be discussed.
- OSTI ID:
- 141680
- Report Number(s):
- CONF-930304--; CNN: NAGl-1251
- Country of Publication:
- United States
- Language:
- English
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