Patent ID: 7799126
Filing Date: 2010-09-21
Classification: C01P,C04B,C09C,Y10T

Abstract:
1. A pigment comprising a flake-form substrate and an anion-binding layer which comprises an anion-forming organic, inorganic and/or organometallic colorant, wherein natural and synthetic clay minerals are excluded as substrate, wherein the flake-form substrate is a glass flake, SiO wherein the anion-binding layer comprises a layered double hydroxide of formula wherein 0.2<x<0.33, M M Z is a counterion of a metal salt and/or an anion or anion mixture of an anion-forming organic, inorganic and/or organometallic colorant, n is the charge number of Z, and m is a stoichiometric factor and indicates the content of water of crystallisation, and wherein the anion-forming organic and/or inorganic colorant is in a proportion of 0.01 to 30% by weight based on the pigment as a whole.