FLUORINATED PHOSPHORUS-DOPED ELECTROCONDUCTIVE TIN OXIDE POWDER, METHOD OF PRODUCING THE POWDER AND FILM USING THE POWDER

摘要

It is an object of the present invention to provide a transparent electroconductive tin oxide powder which has electroconductivity superior to that of conventional phosphorus-doped electroconductive tin oxide powders, undergoes less temporal change in air and gives coating films comprising the powder of the present invention a total light transmittance, haze and surface resistance that are superior to those of coating films comprising conventional phosphorus-doped electroconductive tin oxide powders.;The fluorinated phosphorus-doped electroconductive tin oxide powder of the present invention is obtained by the steps of producing a phosphorus- and fluorine-containing tin hydroxide uniformly in an aqueous solution by addition of 0.5 to 5 parts by weight of phosphorus and 0.5 to 4.0 parts by weight of fluorine, based on 100 parts by weight of tin oxide, adsorbing a water-soluble polymer on the product, and then firing the product at a temperature of 400 to 700° C. under a reducing atmosphere.

主权项

1. A fluorinated phosphorus-doped tin oxide powder comprising 0.5 to 5 parts by weight of phosphorus and 0.5 to 4.0 parts by weight of fluorine, based on 100 parts by weight of tin oxide, and having a specific surface area of 40 to 100 m2/g and a volume resistance of 100 Ω·cm or less.