Aromatic polypyromellitimides from aromatic polyamic acids

Aromatic diamines react with pyromellitic dianhydride in solvents such as dimethyl‐acetamide to form solutions of high molecular weight polyamic acids. These soluble polymers can be converted to insoluble aromatic polyimides. The aromatic poly imides exhibit zero strength temperatures above 700°C. a...

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Bibliographic Details
Published in:	Journal of polymer science. Part A, Polymer chemistry Vol. 34; no. 11; pp. 2069 - 2086
Main Authors:	Sroog, C. E., Endrey, A. L., Abramo, S. V., Berr, C. E., Edwards, W. M., Olivier, K. L.
Format:	Journal Article
Language:	English
Published:	New York John Wiley & Sons, Inc 01-08-1996
Online Access:	Get full text
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Summary:	Aromatic diamines react with pyromellitic dianhydride in solvents such as dimethyl‐acetamide to form solutions of high molecular weight polyamic acids. These soluble polymers can be converted to insoluble aromatic polyimides. The aromatic poly imides exhibit zero strength temperatures above 700°C. and possess excellent thermal and oxidative stability. The stability characteristics of films and the relation of chemical structure to thermal and hydrolytic stability and to polymer properties such as crystallinity are described.
Bibliography:	Presented at the 147th meeting of the American Chemical Society, Philadelphia, April 1964, and at the Bad Nauheim meeting of the Fachgruppe "Kunstoffe und Kautschuk," Gesellschaft Deutscher Chemiker, April 1964. istex:DB3191DC590BDB7CCDA77E7351A72C8BB19B9E60 ark:/67375/WNG-4HB60JG0-8 ArticleID:POLA846 Presented at the 147th meeting of the American Chemical Society, Philadelphia, April 1964, and at the Bad Nauheim meeting of the Fachgruppe “Kunstoffe und Kautschuk,” Gesellschaft Deutscher Chemiker April 1964.
ISSN:	0887-624X 1099-0518
DOI:	10.1002/pola.1996.846