Solutions of polyimidesiloxanes in butyrolactone

Details Solutions of polyimidesiloxanes in butyrolactone Solutions of polyimidesiloxanes in butyrolactone

C - Chemistry, Metallurgy

08

L

400/7209

C08L 83/08 (2006.01) C08G 73/10 (2006.01) C08J 3/09 (2006.01)

Patent

CA 2028971

Case 5886 RDF/dka 12/21/89 SOLUTION OF POLYIMIDESILOXANES IN BUTYROLACTONE Abstract of the Disclosure Disclosed is a solution in butyrolactone of a diglyme-insoluble polyimidesiloxane. The polyimidesiloxane is the reaction product of a dianhydride selected from the group consisting of 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride, 3,3',4,4'-oxydiphthalic anhydride, and mixtures thereof, with a mixture of a non-siloxane diamine and a siloxane diamine in a molar ratio of about 0.1 to about 16, where said non-siloxane diamine is selected from the group consisting of 2,3-diaminotoluene, 3,5-diamino-tert-butylbenzene, 2,5-diamino-trifluoromethyl benzene, 2,6-diamino-4-trifluoromethyl pyridine, and mixtures thereof.

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