RÉSINE CONTENANT UN CARBOXYLE, COMPOSITION DE RÉSINE POUR UN MASQUE DE SOUDURE, ET PROCÉDÉ DE PRÉPARATION D'UNE RÉSINE CONTENANT UN CARBOXYLE

摘要

The objective of the present invention is to propose a carboxyl-containing resin which is less likely to gel and can form a solder mask layer with high electrical insulation reliability. The carboxyl-containing resin in accordance with the present invention has a structure resulting from addition of a carboxylic acid to at least one of epoxy groups of a biphenyl novolac epoxy resin. The carboxylic acid includes at least a polybasic acid.