Main > PIGMENT > Light Interference Pigments > Co.: CH. C > Patent > Claims Etc > Claim 1: Effect Pigment Prepn. Core > Metallic Material Reflectivity=40- > 80% Dielectric Layer of Metal Oxide > a) Hydrolyzing Fe Compd Etc in > Aqueous Medium; pH=1-4 so that > Fe Etc Precipitated on Core as > Fe Oxides Etc.; b) Heat Core+ > Precipitate to 100-900C to Convert > Hydroxides to Oxides & Remove

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Hydroxides to Oxides & Remove's subsections
Water. Claims 5-7: Fe Compd.:

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