Patent ID: 8232366
Filing Date: 2012-07-31
Classification: C08G,C09K,G03F

Abstract:
1. A reactive transparent polyimide precursor having the structure in the following Chemical Formula 1: where X is a tetra-valent organic group derived from alycyclic tetracarboxylic acid dianhydrides having 3 to 30 carbon atoms; Y is a di-valent organic group derived from aliphatic, alicyclic, or non-conjugated aromatic diamines which have 3-30 carbon atoms and side chains, wherein the side chains have one or more ethylenically unsaturated bonds capable of being crosslinked by a radical; and R wherein the acid value of said reactive transparent polyimide precursor is within a range of 30 to 200 mg KOH/g, and said reactive transparent polyimide precursor is a negative type photosensitive precursor, wherein R