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Titolo:
Soluble fluoro-polyimides derived from 1,3-bis(4-amino-2-trifluoromethyl- phenoxy) benzene and dianhydrides
Autore:
Xie, K; Liu, JG; Zhou, HW; Zhang, SY; He, MH; Yang, SY;
Indirizzi:
Chinese Acad Sci, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China Chinese Acad Sci Beijing Peoples R China 100080 100080, Peoples R China
Titolo Testata:
POLYMER
fascicolo: 17, volume: 42, anno: 2001,
pagine: 7267 - 7274
SICI:
0032-3861(200108)42:17<7267:SFDF1P>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Keywords:
fluoro-containing diamine; soluble polyimides; polycondensation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Yang, SY Chinese Acad Sci, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China Chinese Acad Sci Beijing Peoples R China 100080 Peoples R China
Citazione:
K. Xie et al., "Soluble fluoro-polyimides derived from 1,3-bis(4-amino-2-trifluoromethyl- phenoxy) benzene and dianhydrides", POLYMER, 42(17), 2001, pp. 7267-7274

Abstract

Soluble fluoro-polyimides have been synthesized by reacting of a fluorine-containing aromatic diamine, 1,3-bis(4-amino-2-trifluoro-methylphenoxy) benzene(diamine 3), with aromatic dianhydrides to yield poly(amic acid)s whichwere then cyclized to yield polyimide by either thermal or chemical imidization method. The new tri-aromatic ring diamine, with trifluoromethyl groups at P position of amine group and bridged by ether bonds, was obtained by reduction of the corresponding dinitro-compound which was synthesized by coupling of 2-chloro-5-nitro-1-trifluoromethylbenzene with 1,3-hydroquinone in presence of strong base. Homogeneous and stable polyimide solutions with > 12-15 wt.% of solid content were obtained. High quality and purity polyimide films have been prepared which exhibited excellent thermal stability, low moisture absorption and high hygrothermal stability. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 11/07/20 alle ore 17:18:56