Poly-(aroylene-bis-benzimidazoles) and polyimides prepared from aromatized adducts of bis-furans with maleic anhydride

Autor:	A.A. Berlin, B.I. Liogon'kii, A. O. Stankevich, B. I. Zapadinskii, Ye.A. Kazantseva
Rok vydání:	1976
Předmět:	chemistry.chemical_classification chemistry.chemical_compound General method Chemistry Polymer chemistry General Engineering Aromatization Maleic anhydride Organic chemistry Polymer Adduct
Zdroj:	Polymer Science U.S.S.R.. 18:1057-1068
ISSN:	0032-3950
DOI:	10.1016/0032-3950(76)90161-1
Popis:	A new general method was developed for the synthesis of tetracarboxylic acid dianhydrides. The method involves the Diels-Alders reaction between maleic anhydride and bis-furan compounds and subsequent aromatization of the adducts formed. Using the dianhydrides obtained poly-(aroylene-bis-benzimidazoles) and polyimides were synthesized by single- and two-stage methods. The polymers are stable in air up to 500–550° and with lateral phenyl substituents are soluble in organic solvents. When the polymers are synthesized in polyphosphoric acid the stage of aromatization of adducts is excluded.
Databáze:	OpenAIRE
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