| 摘要 |
PURPOSE:A cosmetic for eye make-up such as eye shadow, etc., having high safety which a black type pigment does not possess, using fine powder of ferric tannate complex as a colorant. CONSTITUTION:A ferric salt is added to an aqueous solution of tannic acid with stirring. The molar ratio of the ferric salt to tannic acid is 0.5-2.0. After the addition of the ferric salt is over, an aqueous solution of caustic soda is added to the reaction mixture and adjusted to a pH of 7. The neutralized solution is heated with stirring, cooled, filtered by a filter press, etc., washed with warm warer, and filtered hydrous cake of ferric tannate is dries in an oven, to give black ferric tannate. This is pulverized by a ball mill, etc., to give fine powder having particle diameters of 10-0.1mu. The fine powder whose surface is subjected to hydrophobic treatment with a monofatty acid ester of sorbitan, etc. can be also used. |
