Anhydride terminated polyimides and the crosslinked products...

Details Anhydride terminated polyimides and the crosslinked products... Anhydride terminated polyimides and the crosslinked products...

C - Chemistry, Metallurgy

08

L

400/2002, 402/22

C08L 79/08 (2006.01) C08G 73/10 (2006.01) C08G 73/12 (2006.01)

Patent

CA 1213998

NOVEL ANHYDRIDE TERMINATED POLYIMIDES AND THE CROSSLINKED PRODUCTS THEREOF ABSTRACT OF THE DISCLOSURE Novel carbinol containing polyimides are prepared by reacting selected carbinol-containing tetracarboxylic acid compounds (e.g. bis(methyl half-ester) of 3,3',4,4'-benzhydroltetra- carboxylic acid) with polyfunctional polyamines (e.g. 4,4'-methylenedi- aniline, 1,6-hexanediamine, etc.). The polyimides may be crosslinked at low temperatures via a ring opening reaction between the carbinol and the diacid, acid-ester or anhydride group(s).

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