Coating composition dispersion, aqueous dispersion of composite particles and method for producing aqueous dispersion of composite particles

Abstract

A coating composition dispersion including: at least one of an aqueous dispersion of composite particles (C) including an aqueous medium containing water, and composite particles dispersed in the aqueous medium, in which the composite particles have a particle (A) and a polymer layer (B) with which at least a part of a surface of the particle (A) is coated, and comprises 0.12% by mass or less of a phosphorus atom based on a total mass of the composite particles; and an another aqueous dispersion of polymer particles (D); wherein a weather resistance modification value represented by the following formula |Δb0−Δb|/(Δb0+Δb) is 0.15 or more, the formula being represented by a color difference Δb value of a coating film of a coating composition dispersion having from 100/0 to 1/99 of a solid content mass ratio of the aqueous dispersion of composite particles (C) and the another aqueous dispersion of polymer particles (D), (solid content mass of component (C)/solid content mass of component (D)), and a color difference Δb0 value of a coating film of the another aqueous dispersion of polymer particles (D).

Dependencies are inferred from the claim text.