| abstract |
The present invention relates to a method for forming platelet pigments coated with (rutile) titanium dioxide, wherein hydrous titanium dioxide is deposited on the platelet particles, (a) α-hydroxycarboxylic acid By the present methods and their use, especially in the presence of glycolic acid or oxalic acid and amino acids, in particular glycine, alanine, valine, aspartic acid (α-, β- and γ-forms) or in the presence of amino acids It relates to a method comprising performing titanium deposition on the resulting pigment. The method can be carried out in the absence of exogenous metal and Ti (III). The substrate coated with the rutile TiO 2 of the present invention has at least similar advantages and features of tin-containing products including gloss, color, color uniformity, and almost no small particle formation during manufacture. . |