Polyimides compositions that can be engraved in basic medium

Details Polyimides compositions that can be engraved in basic medium Polyimides compositions that can be engraved in basic medium

C - Chemistry, Metallurgy

08

G

402/221

C08G 73/10 (2006.01)

Patent

CA 1316295

PRECIS DE LA DIVULGATION On décrit des compositions de polybenzhydrolimides solubles à l'état totalement cyclisé, gravables par voie humide en milieu basique, et qui peuvent être rendus insolubles dans les bases et les solvants organiques par un traitement thermique à haute température. Ces polybenzhydrolimides peuvent être préparés par réaction d'au moins un diester de l'acide benzhydroltétracarboxylique-3,3',4,4' avec une diamine aromatique biprimaire.

578211

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