Patent ID: 6908675
Filing Date: 2005-06-21
Classification: B82Y,C01P,C09C,Y10T

Abstract:
1. A process for the production of a free-flowing powders selected from the group comprising titanium dioxide pigments iron oxide pigments, basic carbonate white lead, basic sulfate white lead, basic silicate white lead, zinc sulfide, zinc oxide, composite pigments of zinc sulfide and barium sulfate, antimony oxide and the like, white extender pigments such as calcium carbonate, calcium sulfate, china and kaolin clays, mica, diatomaceous earth and colored pigments such as iron oxide, lead oxide, cadmium sulfide, cadmium selenide, lead chromate, zinc chromate, nickel titanate, chromium oxide, alumina, magnesia, zirconia, kaolin clays, and polytetrafluorethylene powders and the mixtures thereof which adhere intimately together to form substantially spherical pseudo-particles ranging in size from 0.2 mm up to 5.0 mm in diameter where by the pigment is blended in a specially designed mixing vessel with the presence of an electrostatic charge and a air flow and reduces the dustiness of the powders at by a minimum of 50 percent.