Composite particles, coating film forming compositions, printing inks, coating compositions, coated articles, and resin films with coating films

摘要

Composite particles capable of constantly and highly preventing discoloration, decomposition and photocatalysis by ultraviolet rays despite containing titanium oxide; and a composition for forming a coating layer to be used as a coating material composition, particularly as a printing ink, and a coated article, employing such composite particles. Composite particles characterized in that each of them comprises, in order from the inside, a particle containing titanium oxide, a first covering layer containing silicon oxide, a second covering layer containing cerium oxide and a third covering layer containing silicon oxide, and their average particle size is from 0.15 to 3 µm. A composition for forming a coating layer and a coated article, employing the composite particles.