PHOTOCURABLE RESIN COMPOSITION, DRY FILM, CURED PRODUCT, AND PRINTED WIRING BOARD

摘要

PURPOSE: A photocurable resin composition and a cured material therefrom are provided to prevent exterior faulty such as copper circuit color change. CONSTITUTION: A photocurable resin composition contains: carboxylic acid-containing resin, coloring agent with less absorption change and light absorption at 350-400 nm; photopolymerization initiator of oxime esters; and a compound having two or more ethylenically unsaturated group. The composition forms an image at 350-400 nm by being applied on cupper. The photopolymerization initiator is denoted by chemical formula 1 and contains alpha-amino acetophenone optical initiator of chemical formula 2 and acyl phosphine oxide photopolymerization initiator of chemical formula 3.