Polyimide oligomers

Details Polyimide oligomers Polyimide oligomers

C - Chemistry, Metallurgy

08

G

C08G 73/10 (2006.01)

Patent

CA 2120781

Polyimide Oligomers Abstract Polyimide oligomers are described which comprise the condensation product of: at least one phenylindane diamine and at least one aromatic bis(ether anhydride). The polyimide oligomers of the invention are readily processed to form solution prepregable polyimide composites having high glass transition temperatures and high temperature and oxidative stability. More particularly, the present invention provides for crosslinkable polyimide oligomers prepared by reacting, in a suitable solvent under an inert atmosphere, a mixture of monomers comprising: (A) an aromatic diamine component comprising from about 25 to 100 mole % of at least one phenylindane diamine; (B) a dianhydride component comprising from about 25 to 100 mole % of at least one aromatic bis(ether anhydride); and (C) at least one end-cap monomer selected from the group consisting of mono-anhydrides, acyl halides and aromatic amines, wherein each end-cap monomer contains at least one crosslinkable funtional group in the molecule. The crosslinkable polyimide oligomers of the present invention are characterized by a number average molecular weight of from about 1000 to about 15000.

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