C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 209/48 (2006.01) C07D 405/14 (2006.01) C08G 73/10 (2006.01) C08G 73/12 (2006.01)
Patent
CA 2106062
Polyimide resins useful at high temperatures are prepared from: (a) a dialkyl, trialkyl or tetraalkylester of biphenyltetracar- boxylic acid; (b) phenylenediamine, preferably the phenylenediamine comprses a mixture of meta- and para-phenylenediamine; and (c) a divalent end cap compound that is capab;e of undergoing addition polymerization.
Cheng Paul Gung
Serafini Tito T.
Ueda Kenneth K.
Wright Ward F.
Gowling Lafleur Henderson Llp
Northrop Grumman Corporation
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