Rapidly curable electrically conductive clear coatings
AssigneePPG Industries Ohio, Inc.
InventorsMark P. Bowman, Lawrence G. Anderson, Gordon L. Post
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Abstract
Rapidly curable electrically conductive clear coatings are applied to substrates. The electrically conductive clear coating includes to clear layer having a resinous binder with ultrafine non-stoichiometric tungsten oxide particles dispersed therein. The clear coating may be rapidly cured by subjecting the coating to infrared radiation that heats the tungsten oxide particles and surrounding resinous binder. Localized heating increases the temperature of the coating to thereby thermally cure the coating, while avoiding unwanted heating of the underlying substrate.
Claims27
A coated substrate comprising:
- a clear substrate;
- and
- an electrically conductive clear coating over at least a portion of the substrate, wherein the coating comprises a first electrically conductive clear layer and a second clear layer over at least a portion of the first layer, the second clear layer comprising:
- a binder;
- and
- infrared absorbing ultrafine non-stoichiometric tungsten oxide particles dispersed in the binder, wherein the ultrafine non-stoichiometric tungsten oxide particles are present in the second clear layer in an amount of from 200 to 5,000 parts per million.
Dependencies are inferred from the claim text.