C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 73/10 (2006.01) C08L 79/08 (2006.01) C09J 179/08 (2006.01)
Patent
CA 2046795
PATENT 13DV-9921 ABSTRACT OF THE DISCLOSURE Polyimide intercondensation products are prepared from mixed dianhydrides and aromatic diamines. One of the mixed dianhydrides must be 2,2 -bis(3,4-dicarboxyphenyl)- hexafluoropropane dianhydride (6FDA) and the other dianhydride may be oxydiphthalic anhydride (ODPA) or biphenyl dianhydride (BPDA) or mixtures thereof. Preferred aromatic diamines are p-phenylenediamine (PPD) and/or m-phenylenediamine (MPD). The polyimide products have increased glass transition temperatures (Tg), frequently higher than 400°C. Composites made from the polyimides have high thermal and oxidative stability and may be used in aircraft engine hardware.
Gray Robert A.
Griffin Richard N.
Company General Electric
Craig Wilson And Company
LandOfFree
High temperature mixed polyimides and composites formed... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High temperature mixed polyimides and composites formed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High temperature mixed polyimides and composites formed... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2029782