Electroconductive particles and method for adjusting the isoelectric point thereof
AssigneeE. I. Du Pont de Nemours and Company
InventorHoward W. Jacobson
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Abstract
An electroconductive powder composition of antimony-containing tin oxide with an outer layer of hydrous metal oxide having an isoelectric point in the range from about 5 to 9.
Claims1
An electroconductive powder composition comprising powder particles smaller than 1000 microns comprising a nonconducting substrate, each such substrate having a first coating which comprises a network of interconnecting crystallites of antimony-containing tin oxide and a second outer coating layer of a hydrous metal oxide selected from the group consisting of alumina, magnesia, zirconia, titania and rare earth metal oxides and having a thickness of from about 1 monomolecular layer to 5 monomolecular layers and an isoelectric point in the range of from about 5 to 9.
Dependencies are inferred from the claim text.