Abstract
Colored nacreous pigment used so far is a mixture of various colored pigments and titanium dioxide coated mica (TiO2-coated mica). One of the major problems for apprications to cosmetics and other fields is the lack of stability and safety of it. We have developed a colored nacreous pigment having bright color tone and pearly gloss having excellent stability and safety. In order to obtain such colored nacreous pigment, a part of titanium dioxide layer on mica was reduced to black titanium oxide, and then the reduced TiO2-coated mica was coated with titanium dioxide. The products obtained were the colored nacreous pigment, which was colored by interference color of titanium dioxide, and had extremely improved color tone, good consistency of color appearance and interference color. Various colors were available by adjusting the thickness of the titanium dioxide layer coated on the reduced TiO2-coated mica. This colored nacreous pigment does not contain any colored pigments.
