ISSN:
0887-624X
Keywords:
polyether
;
phenylquinoxaline
;
poly(phenylquinoxaline)
;
thermoplastic
;
fluoro-displacement
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A new A - B monomer, 2-(4-hydroxyphenyl)-3-phenyl-6-fluoroquinoxaline (1), which contains both a quinoxaline-activated fluoro group and a phenol group was prepared and it's self-polymerization studied. Compound 1 was prepared either by condensation of 3,4-diaminofluorobenzene with 4-hydroxybenzil, or condensation/demethylation with 4-methoxybenzil in a one pot procedure. The polymerization of 1 was carried out in NMP in the presence of potassium carbonate at 180-190°C, analogous to previous examples of quinoxaline-activated polyether synthesis. A new poly(aryl ether-phenylquinoxaline) (2) was synthesized by this procedure, which was processable from N-methylpyrrolidone, displayed a Tg of 255°C and a polymer decomposition temperature of 450°C. The mechanistic implications of quinoxaline activated fluoro-displacement using an A - B monomer are discussed.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pola.1992.080300401
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