| abstract |
When filling through holes, via holes, etc. with the cured product of the resin composition for resist, a resin composition for resist that can form a cured product having high characteristics such as crack resistance, swelling resistance, and protrusion resistance with good efficiency can be formed. to provide. In this invention, 1st resin and 2nd resin are contained in the resin composition for resists. As for the said 1st resin, the ethylenically unsaturated compound which has a carboxyl group is added to a bifunctional epoxy resin, and polybasic acid anhydride is added. The second resin has an epoxy group to which monocarboxylic acid is added and an epoxy group to which polybasic acid is added. |