White curable composition for printed circuit board, cured coating film using the same, and printed circuit board

摘要

An object of the present invention is to obtain a white curable composition that can yield a highly reflective cured coating film without requiring a complicated step and show good dispersion even without being subjected to an extended dispersion treatment. Provided is a white curable composition for a printed circuit board comprising: (A) a white pigment; (B) a (meth)acrylate compound having a hydroxyl group; (C) a photopolymerization initiator; and (D) a wetting dispersant. The above-described (A) white pigment is preferably titanium oxide. Further, it is also preferred that the above-described titanium oxide be a rutile-type titanium oxide and have a maximum particle size of 1 μm or smaller.

主权项

1. A white curable composition for a printed circuit board, comprising:
a white pigment; a (meth)acrylate compound having a hydroxyl group; a photopolymerization initiator; a wetting dispersant; and a thermosetting component which is one of an amino resin, a block isocyanate compound, a cyclocarbonate compound, a thermosetting resin having a cyclic (thio)ether group, a bismaleimide, and a carbodiimide resin.