| abstract |
PROBLEM TO BE SOLVED: To show good developability even when a developer having a pH of around 10 is used, and to provide a storage stability of a resist, electric and corrosion resistance and electrical properties, chemical resistance, plating resistance, and the like. Provided is a photo solder resist having good solder heat resistance, adhesion, and pencil hardness. [MEANS FOR SOLVING PROBLEMS] UV curable resin having two or more ethylenically unsaturated groups and carboxyl groups in one molecule. C. an epoxy compound having two or more epoxy groups in one molecule B. a compound having at least one carboxyl group and / or a polycarboxylic anhydride; Photopolymerization initiator E. Contains diluent. |