Highly-condensed polyimides and polynaphthoylene benzimidazoles based on 1,1′-binaphthyl-4,4′,5,5′,8,8′-hexacarboxylic dianhydride

Conditions were developed for the synthesis of high molar mass polynaphthalimides and polynaphthoylene benzimidazoles, containing perylene and anthantrone residues, from corresponding prepolymers based on 1,1′-binaphthyl-4,4′,5,5′,8,8′-hexacarboxylic dianhydride and their structure and properties we...

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Bibliographic Details
Published in:Polymer science USSR 1987, Vol.29 (11), p.2659-2665
Main Authors: Kalashnikov, B.O., Efros, L.S., Strelets, B.Kh, Gel'mont, M.M., Kondrat'ev, M.K.
Format: Article
Language:English
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Summary:Conditions were developed for the synthesis of high molar mass polynaphthalimides and polynaphthoylene benzimidazoles, containing perylene and anthantrone residues, from corresponding prepolymers based on 1,1′-binaphthyl-4,4′,5,5′,8,8′-hexacarboxylic dianhydride and their structure and properties were evaluated. It was shown that polymer derivatives of perylene are obtained by reductive cyclization of prepolymers in dilute solutions, anthantrone derivatives- by ring-formation in sulphuric acid and weak oleum, and derivatives containing units of both types - by thermal-ring formation of prepolymers at temperatures higher than 300°C. It was found that the polymers obtained formed rings to the extent of 70–90%, had intrinsic viscosity of 0·6−1·1 dl/g and formed films and fibres.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(87)90245-0