Patent ID: 7455726
Filing Date: 2008-11-25
Classification: A61K,A61Q,C01P,C08K,C09C,C09D,Y10T

Abstract:
1. Photostabilized effect pigment, comprising a substrate to which one or more calcined vanadium-containing oxide layers, alone or mixed with sulfates, borates or phosphates, have been applied, wherein the substrate is a flake-form or needle-shaped support and/or a flake-form or needle-shaped support coated with one or more transparent, semitransparent and/or opaque layers comprising metal oxides, metal oxide hydrates, metal suboxides, metals, metal fluorides, metal nitrides, metal oxynitrides or a mixture thereof and wherein the vanadium-containing oxide layers have a vanadium content of 0.002 to 0.2% by weight calculated as V 2 O 5 based on the pigment as a whole, and wherein the calcined and vanadium-containing oxide layer comprises titanium oxide or the substrate is titanium oxide or a titanium oxide-containing substrate.