DIAMINES AND PHOTOSENSITIVE POLYIMIDES MADE THEREFROM

摘要

Case 6366 RDF/dka 5/15/91 NOVEL DIAMINES AND PHOTOSENSITIVE POLYIMIDES MADE THEREFROM Disclosed is an aromatic diamine having the general formula where A is a group containing at least one aromatic ring, each Y is independently selected from , , or -OR, R is a group containing at least one olefinically unsaturated group, R' is hydrogen, alkyl to C25, aryl, or R, n is 1 to 4, and the number of olefinic groups in Y is at least 3 when each Y is and otherwise is at least 2. Photosensitive polyamic acids and polyimides can be prepared from the aromatic diamines which can be crosslinked with light to a mask to form patterns on a substrate.