✦ LIBER ✦

Synthesis and characterization of new soluble aromatic polyimides from diaminotetraphenylimidazolinone and aromatic tetracarboxylic dianhydrides

✍ Scribed by Ki Hong Park; Takashi Tani; Masa-Aki Kakimoto; Yoshio Imai

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 121 KB
Volume: 36
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(199808)36:11<1767::aid-pola9>3.0.co;2-o

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✦ Synopsis

A series of new soluble aromatic polyimides with inherent viscosities of 0.65-1.12 dL/g were synthesized from 1,3-bis(4-aminophenyl)-4,5-diphenylimidazolin-2-one and various aromatic tetracarboxylic dianhydrides by the conventional twostep procedure that included ring-opening polyaddition and subsequent thermal cyclodehydration. These polyimides could also be prepared by the one-pot procedure in homogeneous m-cresol solution. Most of the tetraphenyl-pendant polyimides were soluble in organic solvents such as N,N-dimethylacetamide, 1,3-dimethyl-2-imidazolidone, and m-cresol. Some polyimides gave transparent, flexible, and tough films with good tensile properties. The glass transition temperatures and 10% weight loss temperatures under nitrogen of the polyimides were in the range of 287-326 and 520-580ЊC, respectively.

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