Compositions for forming transparent conductive nanoparticle coatings and process of preparation therefor
AssigneeNanophase Technologies Corporation
InventorsJohn H. Aikens, Harry W. Sarkas, Richard W. Brotzman, Jr., Sara Helvoigt
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Abstract
A process produces a substantially stable aqueous dispersion of metal or metal oxide particles suitable for use in forming a transparent conductive coating. The process comprises the steps of (a) adding a nanocrystalline material to water, the nanocrystalline material comprising primary particles of metal or metal oxide having a substantially spherical shape and (b) mixing the nanocrystalline material and water to form an aqueous dispersion. The process identified above, prepares a substantially stable aqueous dispersion of nanocrystalline particles, which may be used in forming a transparent conductive coating.
Claims32
A process for forming a substantially transparent, electrically conductive film having a sheet resistance of less than 105 ohms/square comprising the steps of:
- (a) adding a nanocrystalline material to water, said nanocrystalline material comprising primary particles of metal or metal oxide having a substantially spherical shape;
- (b) mixing the nanocrystalline material and the water to form a substantially stable aqueous dispersion;
- (c) adding a film forming agent to the aqueous dispersion in an amount effective for the dispersion to provide a uniform, defect-free film when the dispersion is applied to a substrate, said film having a sheet resistance of less than 105 ohms/square;
- (d) adding a diluent to said aqueous dispersion to make a formulation;
- and
- (e) applying said formulation to a substrate.
A process for making a substantially stable aqueous dispersion of nanocrystalline particles suitable for use in forming a transparent conductive coating having a sheet resistance of less than 105 ohms/square, comprising the steps of:
- (a) adding a nanocrystalline material to water, said nanocrystalline material comprising primary particles of metal or metal oxide having a substantially spherical shape;
- (b) mixing the nanocrystalline material and the water to form a substantially stable aqueous dispersion;
- and
- (c) adding a film forming agent to the dispersion in an amount effective for the dispersion to provide a uniform, defect-free film when applied to a substrate;
- said film having a sheet resistance of less than 105 ohms/square.
Dependencies are inferred from the claim text.