| abstract |
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. |