Pigments covered blue prussia mother of pearl.

摘要

P process for obtaining pearlescent pigments covered blue prussia. / p & & p & it consists in causing it to adhere directly on the blue prussia on a substrate of mica, possibly covered with metal oxide, by mixing in an aqueous medium of the substrate with a soluble and ferric ferrocyanide a compound soluble in excess of at least 30% relative to the required amount of ferric ions to form prussian blue, the ph being adjusted to between 3,5 and 5,5, the product obtained is, once separated, dried at a temperature below the decomposition temperature of the blue prussia. / p & & p & the pigments obtained are particularly used in cosmetology. / p