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Synthesis and characterization of formal-group-containing diisocyanates and polyimides therefrom

โœ Scribed by C. V. Avadhani; P. P. Wadgaonkar; S. P. Vernekar


Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
342 KB
Volume
45
Category
Article
ISSN
0021-8995

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A facile synthesis of two novel diisocyanates containing methylene groups and preformed imide structure is described. Furthermore, six thermally stable and soluble polyimides were synthesized by polycondensation of these two diisocyanates with pyromellitic dianhydride (PMDA), 3,3',4,4'-benzophenonet