| 摘要 |
<p>An ultraviolet-curable resin composition which is excellent in developped-line width and resolution and satisfactory in soldering heat resistance and gold plating resistance. The resin composition comprises (A) an ultraviolet-curable resin obtained by polymerizing an ethylenic monomer ingredient comprising an epoxidized ethylenic monomer (i), reacting the resultant epoxidized polmymer (a) with a carboxylated ethylenic monomer (b), and reacting the resultant intermediate with an (un)saturated polybasic acid anhydride (c); (B) an epoxy compound having two or more epoxy groups per molecule; (C) a photopolymerization initiator; (D) a diluent; and (E) an ultraviolet-curable resin which is obtained by reacting a novolak epoxy compound (e) with a carboxylated ethylenic monomer (b) and reacting the resultant intermediate with an (un)saturated polybasic acid anhydride (c) and which has an acid value of 10 to 45 mgKOH/g, excluding 45 mgKOH/g.</p> |
