Patent ID: 8492453
Filing Date: 2013-07-23
Classification: G03F,H05K

Abstract:
1. A photosensitive resin composition comprising: (A) a linear polymer of an ethylenically unsaturated compound comprising a carboxyl-containing ethylenically unsaturated compound and having a carboxylic acid equivalent of 400 to 1000; (B) a bisphenol-F epoxy resin having an epoxy equivalent of 450 to 2300 and is in a solid state at 25° C.; (C) a polymerizable compound containing an ethylenically unsaturated group; and (D) a photopolymerization initiator; wherein the proportion of the epoxy resin (B) is 3 to 40 wt % based on the overall weight of the photosensitive resin composition, the photosensitive resin composition having a tensile breaking elongation percentage of not less than 10% and a 2% weight loss temperature of not lower than 260° C. after being cured.