Coloring of inorganic substrates and mineral materials

Abstract

A method for coloring inorganic substrates such as glass beads, glass fibers, mineral wool, rock wool, mineral fiber boards and cloths, concrete molded materials, inorganic pigments and metallic powders, which comprises treating the inorganic substrate with (1) a cationic component comprising (a) a water soluble cationic resin or an aqueous solution of a water soluble cationic resin, (b) an aqueous solution of a water soluble cationic resin and a water soluble cationic dye, or (c) an aqueous dispersion of a water soluble cationic resin, a cationic dispersing agent plus a water insoluble dye or pigment and, optionally, a cationic water soluble dye; and With (2) an anionic component comprising (d) an aqueous solution of a water soluble anionic dye, (e) an anionic dispersing agent or an aqueous solution of an anionic dispersing agent, (f) an aqueous solution of an anionic dispersing agent and a water soluble anionic dye, or (g) an aqueous dispersion of an anionic dispersing agent plus a water insoluble dye or pigment and, optionally, an anionic water soluble dye with the order of treatment with the cationic component (1) and the anionic component (2) being optional and with at least one of the cationic component (1) or the anionic component (2) containing a dye, either water soluble or water insoluble, or pigment as a colorant.

Dependencies are inferred from the claim text.