Electroconductive composition and process of preparation
AssigneeE. I. Du Pont de Nemours and Company
InventorHoward R. Linton
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Abstract
An electroconductive composition comprising a two-dimensional network of antimony-containing tin oxide crystallites in association with amorphous silica, the composition according to one aspect of the invention comprising a powder of submicron to tens of micron size particles capable of forming a conductive network within a carrier matrix, such as a thin film matrix, and a process for preparing the composition.
Claims16
A conductive member comprising a carrier matrix and an electroconductive network wherein said network comprises interconnecting shaped particles, said particles comprising a core and an amorphous silica or a silica-containing material which is surface-coated with a coating comprising antimony-containing tin oxide in which the antimony content ranges from 1 to about 30% by weight of the tin oxide.
A product comprising a matrix and an electroconductive composition which comprises shaped particles selected from BaSO.sub.4, SrSO.sub.4, CaSO.sub.4, graphite, carbon, mica, and TiO.sub.2 which are coated with amorphous silica or a silica-containing material and electrically conductive antimony-containing tin oxide in which the antimony content ranges from 1 to about 30% by weight of the tin oxide.
A product comprising a matrix and an electroconductive composition said composition comprises hollow silica shells less than about 250 nm in thickness that have an exterior coating comprising electrically conductive antimony-containing tin oxide in which the antimony content ranges from 1 to about 30% by weight of the tin oxide, wherein said composition optionally comprises up to about 10% by weight of at least one grain refiner selected from alkali metals, alkaline earth metals, transition metals and rare earth elements.
A product comprising a carrier matrix and an electroconductive network wherein said network comprises interconnecting shaped particles, said particles comprising a core material coated with at least two coatings wherein one of said coatings is silica or a silica-containing material and wherein one of said coatings comprises electrically conductive antimony-containing tin oxide in which the antimony content ranges from about 1 to about 30% by weight of the tin oxide.
Dependencies are inferred from the claim text.