Stabilization of polyetherimides with alkali metal...

Details Stabilization of polyetherimides with alkali metal... Stabilization of polyetherimides with alkali metal...

C - Chemistry, Metallurgy

08

G

402/216, 400/770

C08G 73/10 (2006.01) C07D 209/48 (2006.01) C08L 79/08 (2006.01)

Patent

CA 1045289

ABSTRACT OF THE DISCLOSURE A method is provided for making polyetherimides having improved heat stability involving the initial production of a polyetherimide by the nitro-displacement of dinitro- bisimide with alkali diphenoxide and the employment with the resulting polyetherimide of an alkali metal phenoxide, alkoxide or thio analogue as a stabilizer.

215025

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