Tin oxide based conductive powders and coatings
First Claim
1. A transparent conductive coating on a substrate, said conductive coating containing an electroconductive powder consisting essentially of from about 0.1 to 10% by weight silica, and tin oxide doped with at least one of tantalum and niobium, and optionally phosphorus;
- wherein said powder is substantially free of antimony and pyrochlore.
1 Assignment
0 Petitions
Accused Products
Abstract
A product and process are disclosed that relate to electroconductive powders based on tantalum, niobium, or phosphorus or any combination thereof doped tin oxide and coatings containing such powders. These powders can be used for making transparent coated films that are conductive and have desirable properties for a number of end uses. Some important end uses are in static dissipative fiber and films, coatings for recyclable containers, materials involved in packaging, where the presence of certain heavy metals is undesirable, transparent conductive coatings, among other uses.
36 Citations
13 Claims
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1. A transparent conductive coating on a substrate, said conductive coating containing an electroconductive powder consisting essentially of from about 0.1 to 10% by weight silica, and tin oxide doped with at least one of tantalum and niobium, and optionally phosphorus;
- wherein said powder is substantially free of antimony and pyrochlore.
- View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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4. A transparent conductive coating composition comprising an aqueous acrylic binder resin having a pigment to binder ratio of about 1:
- 2 to 1;
5 by weight, a surface resistivity of less than about 1012 ohms/sq, a haze value of less than 20%, a distance from whiteness of less than about 20%, wherein the pigment comprises an electroconductive powder consisting essentially of from about 0.1 to 10% by weight silica and tin oxide doped with at least one of tantalum and niobium, and optionally phosphorus;
wherein said powder is substantially free of antimony and pyrochlore.
- 2 to 1;
Specification