Coated pigment

Abstract

A main object of the present invention to provide a coated pigment that is composed of a composite particle comprising a silicon compound coated on the surface of a metal particle, and that can be dispersed with relatively few aggregates. The present invention relates to a coated pigment comprising a composite particle containing a metal particle and one or two or more coating layers on the surface of the metal particle, wherein (1) at least one of the coating layers is a silicon compound-containing layer, and (2) the proportion of aggregates formed by adhesion of at least four of the composite particles with each other is not more than 35% by number.

1 . A coated pigment comprising a composite particle containing a metal particle and one or two or more coating layers on the surface of the metal particle, wherein
 (1) at least one of the coating layers is a silicon compound-containing layer, and   (2) the proportion of the number of aggregates formed by adhesion of at least four of the composite particles to each other is not more than 35%.   
     
     
         2 . The coated pigment according to  claim 1 , wherein the shape of the composite particle is a flake shape, and the volume-based D50 obtained by measuring the particle size distribution with a laser diffraction particle size distribution analyzer is 0.1 to 50 μm. 
     
     
         3 . The coated pigment according to  claim 1 , comprising at least two coating layers on the composite particle, and also comprising a coating layer containing at least one kind selected from metals, metal oxides, metal hydrates and resins. 
     
     
         4 . The coated pigment according to  claim 1 , wherein at least the silicon compound-containing layer is disposed as the outermost layer. 
     
     
         5 . The coated pigment according to  claim 1 , wherein the metal particle comprises aluminum or an aluminum alloy. 
     
     
         6 . A resin composition comprising a coated particle according to  claim 1  and a resin component. 
     
     
         7 . A resin composition comprising a coated particle according to  claim 2  and a resin component. 
     
     
         8 . A resin composition comprising a coated particle according to  claim 3  and a resin component. 
     
     
         9 . A resin composition comprising a coated particle according to  claim 4  and a resin component. 
     
     
         10 . A resin composition comprising a coated particle according to  claim 5  and a resin component.