Aqueous solutions of polyamide acids which can be precursors of

Details Aqueous solutions of polyamide acids which can be precursors of Aqueous solutions of polyamide acids which can be precursors of

1975-02-04

1977-03-29

Lieberman, Allan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260857PA, C08J 306, C08L 7908

Patent

active

040148343

ABSTRACT:
High solids, low viscosity, stable aqueous solutions of polyamide acids, which are precursors of polyimide polymers, can be prepared from the polyamide acids, a tertiary amine, a coalescing agent such as N-methylpyrrolidone, and a viscosity reducing agent such as furfuryl alcohol. These aqueous solutions are capable of depositing a uniform film and of being cured into polyimides.

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patent: 3507765 (1970-04-01), Holub et al.
patent: 3528937 (1970-09-01), Reynolds et al.
patent: 3541036 (1970-11-01), Libackyj
patent: 3663728 (1972-05-01), Hoback et al.
patent: 3804793 (1974-04-01), McQuade
patent: 3891601 (1975-06-01), Peterson et al.
Encyclopedia of Chem. Tech., Kirk-Othmer, second ed. supplement vol. A-U, 1971, pp. 889-910.

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