| abstract |
A process for the production of a water-resistant nacreous pigment, comprising hydrolyzing a zirconium or zirconyl compound, in the presence of a hypophosphite and in the presence of a metal oxide-coated mica flake pigment, whereby a hydrated zirconium oxide is deposited onto the surface of the metal oxide-coated mica flake, and a nacreous pigment comprising metal oxide-coated mica flakes coated with hydrated zirconium oxide. |