Patent ID: 6642348
Filing Date: 2003-11-04
Classification: C08G

Abstract:
An addition-cured polyimide comprising:crosslinked linear polyimides, wherein said linear polyimides are the reaction product of: an aromatic diamine; a reactive end group selected from the group consisting of 5-norbornene-2,3-dicarboxylic acid, ester derivatives of 5-norbornene-2,3-dicarboxylic acid, anhydride derivatives of 5-norbornene-2,3-dicarboxylic acid, and 4-phenylethynylphthalic anhydride; and a 2,2-biaryl dianhydride selected from the group consisting of: â€ƒwhere each X is the same or different and is selected from O, CH2, CO, SO2, CF2, C(CH3)2, C(CF3)2, C(Ph)(CF3), or nil.