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Synthesis of diallyl‐containing polyimide and the effect of allyl groups on properties

Synthesis of diallyl‐containing polyimide and the effect of allyl groups on properties A diallyl‐containing bisphenol, 1,1‐bis(3‐allyl‐4‐hydroxyphenyl)‐1‐(6‐oxido‐6H ‐dibenzo [c,e][1,2] oxaphosphorin‐6‐yl) ethane (1), was prepared by a two‐step procedure. Then, a diallyl‐containing diamine, 1,1‐bis(3‐allyl‐4‐(4‐aminophenoxy)‐phenyl)‐1‐(6‐oxido‐6H‐dibenzo [c,e][1,2] oxaphosphorin‐6‐yl)ethane (3), was prepared from the nucleophilic substitution of (1) with 4‐fluoronitrobenzene, followed by the reduction by Fe/HCl. A flexible polyimide (4) with curable diallyl linkages was prepared from the condensation of (3) and 4,4′‐oxydiphthalic anhydride in m‐cresol in the presence of isoquinoline. Curing polyimide (4) at 300 °C leads to thermosetting polyimide (5). We discussed the amounts of allyl group on Tg, coefficient of thermal expansion, and thermal stability of thermosetting polyimides, and found that thermal properties and dimensional stability of thermosetting polyimides increase with the amounts of cured allyl moieties. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 513–520 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Polymer Science Part A Polymer Chemistry Wiley

Synthesis of diallyl‐containing polyimide and the effect of allyl groups on properties

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References (44)

Publisher
Wiley
Copyright
© 2014 Wiley Periodicals, Inc.
ISSN
0887-624X
eISSN
1099-0518
DOI
10.1002/pola.27459
Publisher site
See Article on Publisher Site

Abstract

A diallyl‐containing bisphenol, 1,1‐bis(3‐allyl‐4‐hydroxyphenyl)‐1‐(6‐oxido‐6H ‐dibenzo [c,e][1,2] oxaphosphorin‐6‐yl) ethane (1), was prepared by a two‐step procedure. Then, a diallyl‐containing diamine, 1,1‐bis(3‐allyl‐4‐(4‐aminophenoxy)‐phenyl)‐1‐(6‐oxido‐6H‐dibenzo [c,e][1,2] oxaphosphorin‐6‐yl)ethane (3), was prepared from the nucleophilic substitution of (1) with 4‐fluoronitrobenzene, followed by the reduction by Fe/HCl. A flexible polyimide (4) with curable diallyl linkages was prepared from the condensation of (3) and 4,4′‐oxydiphthalic anhydride in m‐cresol in the presence of isoquinoline. Curing polyimide (4) at 300 °C leads to thermosetting polyimide (5). We discussed the amounts of allyl group on Tg, coefficient of thermal expansion, and thermal stability of thermosetting polyimides, and found that thermal properties and dimensional stability of thermosetting polyimides increase with the amounts of cured allyl moieties. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 513–520

Journal

Journal of Polymer Science Part A Polymer ChemistryWiley

Published: Mar 15, 2016

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