Fine orange color pigments and paint and resin composition using the fine orange color pigments

摘要

PROBLEM TO BE SOLVED: To obtain a fine orange pigment which does not contain a harmful element, has been improved in chemical resistance (e.g. resistances to acids and alkalis) and heat resistance, and can give coating material and resin compositions excellent in clarity.;SOLUTION: This pigment comprises fine hydrated iron oxide particles, a coating layer formed from an organosilane compound or polysiloxane derived from an alkoxysilane on the surface of the particles, and an organic red pigment attached to the coating layer and has an average length of 0.005 μm or more but less than 0.1 μm. The amount of the organic red pigment attached is 1-30 pts.wt. based on 100 pts.wt. hydrated iron oxide particles.;COPYRIGHT: (C)2002,JPO