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US 9,631,101 B2Granted
Ionic liquid release coat for use in metal flake manufacture
AssigneeEckart America Corporation
InventorJohn Moffatt
Life of this patent
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Abstract
A method of producing metal flakes (72′) is provided. The method includes: applying a layer of ionic liquid (70) to a substrate (24); forming a layer of metal (70) on the substrate (24) over the ionic liquid (70); and removing the layer of metal (70) from the substrate (24).
Claims47
A method of producing metal flakes, said method comprising:
- applying a layer of ionic liquid to a substrate;
- forming a layer of metal on the substrate over the ionic liquid;
- and
- removing the layer of metal from the substrate.
1 more element
A metal flake made by a method comprising:
- applying a layer of ionic liquid to a substrate;
- forming a layer of metal on the substrate over the ionic liquid;
- and
- removing the layer of metal from the substrate,
- wherein the metal flake comprises a coating layer covering at last a part of a surface of the metal flake, the coating layer comprising an ionic liquid or fluid prepared from,
- (a) one or more cations selected from the group consisting of imidazolium;
- phosphonium;
- ammonium;
- pyrazolium;
- pyridinium;
- pyrrolidinium;
- sulfonium;
- and cationic polymers;
- wherein the cationic polymers, if present, are formed from one or more components selected from the group consisting of 4-chloromethylstyrene, 2-chloroethyl methacrylate, 2-chloroethyl acrylate, 4-chloro-1-butene, allyl chloride and allyl bromide reacted with butyl imidazole;
- and
- (b) one or more anions selected from the group consisting of bromide, nitrate, hexafluorophosphate, tetrafluoroborate, tosylate, brosylate, dialkyl phosphate, dialkyl phosphinate, bis(trifluoromethylsulfonyl)imide, triflate, and bisulfate,
- wherein the flake has a particle size from about 4 to about 12 microns.
14 more elements
A dispersion comprising a metal flake prepared by a method comprising:
- applying a layer of ionic liquid to a substrate;
- forming a layer of metal on the substrate over the ionic liquid;
- and
- removing the layer of metal from the substrate,
- wherein the dispersion comprises,
- (a) 2 to 20 weight percent of the metal flake, on a basis of total weight of
- the dispersion;
- (b) 0.1 to 5 weight percent of at least one ionic liquid, on a basis of total weight of the dispersion;
- and
- (c) 75 to 97 weight percent of one or more solvents,
- on a basis of total weight of the dispersion.
8 more elements
A metal flake made by a method comprising:
- applying a layer of ionic liquid to a substrate;
- forming a layer of metal on the substrate over the ionic liquid;
- and
- removing the layer of metal from the substrate,
- wherein the metal flake a coating layer covering at last a part of a surface of the metal flake, the coating layer comprising an ionic liquid or fluid prepared from,
- (a) one or more cations selected from the group consisting of imidazolium;
- phosphonium;
- ammonium;
- pyrazolium;
- pyridinium;
- pyrrolidinium;
- sulfonium;
- and cationic polymers;
- wherein the cationic polymers, if present, are formed from one or more components selected from the group consisting of 4-chloromethylstyrene, 2-chloroethyl methacrylate, 2-chloroethyl acrylate, 4-chloro-1-butene, allyl chloride and allyl bromide reacted with butyl imidazole;
- and
- (b) one or more anions selected from the group consisting of bromide, nitrate, hexafluorophosphate, tetrafluoroborate, tosylate, brosylate, dialkyl phosphate, dialkyl phosphinate, bis(trifluoromethylsulfonyl)imide, triflate, and bisulfate,
- wherein the ionic liquid or fluid comprises at least one of triisobutylmethyl tosylate, tributylethylphosphonium diethylphosphate, trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate, and 1-methyl-3-hexadecylimidazolium tosylate.
14 more elements
A metal flake made by a method comprising:
- applying a layer of ionic liquid to a substrate;
- forming a layer of metal on the substrate over the ionic liquid;
- and
- removing the layer of metal from the substrate,
- wherein forming the layer of metal includes vapor depositing the layer of metal on the substrate over the ionic liquid in a vacuum chamber.
2 more elements
Dependencies are inferred from the claim text.