| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photo- and/or thermosetting composition that provides an excellent cured film having excellent developability and sufficient characteristics such as hardness, solder heat resistance, chemical resistance, adhesiveness, PCT (Pressure Cooker Test) durability, electroless gold plating durability, whitening resistance, electric insulating property and flexibility, and also to provide a cured product of the composition. <P>SOLUTION: The curable composition contains: (A) a carboxy group-containing compound having an acid number of 40 to 200 mgKOH/g, which is obtained by reacting a monocarboxylic acid (b) in a proportion of 0.3 to 0.9 mol with respect to 1 equivalent of epoxy groups, with epoxy groups of a resin (a) having two or more epoxy groups in one molecule, reacting a polybasic acid (d) in a proportion of 0.2 to 5 mol with respect to 1 equivalent of epoxy groups, with epoxy groups of the obtained reaction product (c), reacting a monocarboxylic acid (f) in a proportion of 0.0 to 5.0 mol with respect to 1 equivalent of epoxy groups, with epoxy groups of the obtained reaction product (e) to obtain a reaction product (g) having an acid number of 18 to 180 mgKOH/g, and further reacting a polybasic acid anhydride (h) with a secondary alcoholic hydroxy group of the reaction product (g); (B) a photosensitive (meth)acrylate compound; and (C) a photopolymerization initiator. <P>COPYRIGHT: (C)2010,JPO&INPIT |
