| 摘要 |
PURPOSE: A process for preparing electrically conductive pigments by coating a tin mixed oxide layer doped with F¬- and/or PO4¬-3 as an electrically conductive layer to a substrate is provided, which produces the electrically conductive pigments having acceptable resistance simply and inexpensively. CONSTITUTION: A hydrolyzable tin compound (IV) is added to an aqueous solution containing a substrate in a shape suspended at a pH and temperature for completing hydrolysis of a tin compound to produce a substrate coated by tin oxide hydrate, the substrate is separated from the suspension, if desired, washed, dried and then calcined at 600 to 1,000deg.C to produce a substrate coated with SnO2. In an additional process, the SnO2 layer is converted into a tin mixed oxide layer doped with F¬- and/or PO4¬-3.
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