Patent ID: 6355260
Filing Date: 2002-03-12
Classification: A61K,A61Q,B82Y,C01P,C09C

Abstract:
Pigments with surfaces coated homogeneously with an inorganic compound having refractive index of at most 1.8 and selected from the group consisting of alumina and phosphorus oxide, said pigments having an average diameter between 0.1 and 1 &mgr;m and being selected from a group consisting of, as inorganic pigments, titanium oxide, zinc oxide, ziconium oxide, cerium oxide, Indian red, yellow iron oxide, black iron oxide, ultramarine blue, dark blue, barium sulfate, titanated mica, mica, sericite, talc, bentonite, kaolin and mixed pigments with a color of human skin formed of titanium oxide and iron oxide, and as organic pigments, Red No. 202, Red No. 203, Red No. 204, Red No. 205, Red No. 207, Orange No. 203, Orange No. 204, Yellow No. 205, Blue No. 201 and Blue No. 204, said pigments having a decrease rate of a color difference defined by Hunter's color difference formula defined in 6.3.2 of JIS Z 8730 in a range from 55 to 84% when caprylic triglyceride is mixed at a (pigments)/(caprylic triglyceride) mixing ratio of 84/16 by weight so that a change of color of the pigments when caprylic triglyceride is added to the pigments is reduced.