# US 2013/0153263 A1 · Inorganic nanofiller, partial discharge resistant enameled wire including the same, and preparing method of the enameled wire > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153263 A1 - Document ID: US20130153263A1 - Status: Published application - Kind: A1 - Application number: 13/530,237 - Filed: 2012-06-22 - Published: 2013-06-20 - Earliest claimed: 2011-12-20 - Assignees: Sejong University Industry Academy Cooperation Foundation - Inventors: Young-Soo SEO; Yongbeom KIM - Web page: https://patentgrep.com/patent/US20130153263A1 ## CPC - H01B 3/308: {Wires with resins} - C09D 7/66: {characterised by particle size} - C09D 7/67: {Particle size smaller than 100 nm} - C08K 5/54: Silicon-containing compounds {(C08K5/0091 takes precedence)} - C08K 9/06: with silicon-containing compounds - C08K 2201/014: Additives containing two or more different additives of the same subgroup in C08K - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract The present disclosure relates to a silane-containing inorganic nanofiller, a varnish including the silane-containing inorganic nanofiller, an enameled wire including the silane-containing inorganic nanofiller, and a method for preparing the enameled wire. ## Claims ### Claim 1 A silane-containing inorganic nanofiller, comprising: an inorganic nanofiller; a first silane containing at least one aromatic cyclic group which is chemically bonded to a surface of the inorganic nanofiller; and a second silane containing at least one amine group which is chemically bonded to a surface of the inorganic nanofiller. ### Claim 2 (depends on 1) The silane-containing inorganic nanofiller of claim 1, wherein the silane-containing inorganic nanofiller further includes a third silane containing at least one hydrocarbon group having a number of carbon atoms of 1 to 3 which is chemically bonded to a surface of the inorganic nanofiller. ### Claim 3 (depends on 1) The silane-containing inorganic nanofiller of claim 1, wherein the inorganic nanofiller includes an inorganic compound selected from the group consisting of silica, titania, alumina, zirconia, yttria, a chrome oxide, a zinc oxide, an iron oxide, clay, and combinations thereof. ### Claim 4 (depends on 1) The silane-containing inorganic nanofiller of claim 1, wherein the first silane includes a silane containing at least one aromatic cyclic group selected from the group consisting of trimethoxyphenylsilane, N-[3-(trimethoxysilyl)propyl]aniline, N-[3-(trimethoxysilyl)propyl]-n′-(4-vinylbenzyl)ethylenediamine, allylphenyldichlorosilane, aminophenyltrimethoxysilane, t-butylphenyldichlorosilane, p-(t-butyl)phenethyltrichlorosilane, 3,5-dimethoxyphenyltriethoxysilane, diphenyldiethoxysilane, diphenyldimethoxysilane, diphenylmethylethoxysilane, 3-(p-methoxyphenyl)propyltrichlorosilane, p-methoxyphenyltrimethoxysilane, phenethylmethyldichlorosilane, phenethyltrimethoxysilane, 3-phenoxypropyldimethylchlorosilane, 3-phenoxypropylmethyldichlorosilane, 3-phenoxypropyltrichlorosilane, phenyldimethylchlorosilane, phenyldimethylethoxysilane, phenylethyldichlorosilane, phenylmethyldichlorosilane, 1-phenyl-1-(methyldichlorosilyl)butane, phenylmethyldimethoxysilane, phenylmethyldiethoxysilane, (3-phenylpropyl)trichlorosilane, phenyltrichlorosilane, phenyltriethoxysilane, phenyltrimethoxysilane, triphenylchlorosilane, triphenylethoxysilane, (triphenylmethyl)methyldichlorosilane, and combinations thereof. ### Claim 5 (depends on 1) The silane-containing inorganic nanofiller of claim 1, wherein the second silane includes a silane containing at least one amine group selected from the group consisting of 3-[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane, N-[3-(trimethoxysilyl)propyl]ethylenediamine, (3-aminopropyl)trimethoxysilane, and combinations thereof. ### Claim 6 (depends on 2) The silane-containing inorganic nanofiller of claim 2, wherein the third silane includes a silane containing at least one hydrocarbon group having a number of carbon atoms of 1 to 3 selected from the group consisting of ethyltrimethoxysilane, methoxytrimethylsilane, ethoxytrimethylsilane, triethylchlorosilane, trimethylchlorosilane, and combinations thereof. ### Claim 7 (depends on 1) A varnish, wherein the silane-containing inorganic nanofiller of claim 1 is dispersed. ### Claim 8 (depends on 7) The varnish of claim 7, wherein the varnish includes a varnish selected from the group consisting of a polyester varnish, a polyesterimide varnish, a polyesteramide varnish, a polyesteramideimide varnish, a (tri(2-hydroxy ethyl)isocyanurate triacrylate)-polyesterimide varnish, a polyetherimide varnish, a polyamide varnish, a polyamideimide varnish, a polyimide varnish, a polyurethane varnish, a polyvinyl formal varnish, and combinations thereof. ### Claim 9 (depends on 1) An enameled wire, comprising: a conductive wire; and a film formed on the conductive wire, and containing an organic insulating polymeric matrix and the silane-containing inorganic nanofiller of claim 1 dispersed in the organic insulating polymeric matrix with a nanometer scale. ### Claim 10 (depends on 9) The enameled wire of claim 9, wherein the organic insulating polymeric matrix includes a polymer selected from the group consisting of polyester, polyesterimide, polyesteramide, polyesteramideimide, (tri(2-hydroxy ethyl)isocyanurate triacrylate)-polyesterimide, polyetherimide, polyamide, polyamideimide, polyimide, polyurethane, polyvinyl formal, and combinations thereof. ### Claim 11 (depends on 9) The enameled wire of claim 9, wherein the film includes from about 0.1 wt % to about 30 wt % of the silane-containing inorganic nanofiller. ### Claim 12 (depends on 9) A method for preparing the enameled wire of claim 9, comprising: adding an inorganic nanofiller, a first silane containing at least one aromatic cyclic group, and a second silane containing at least one amine group to a first solvent followed by irradiating an ultrasonic wave to form a silane-containing inorganic nanofiller; dispersing the silane-containing inorganic nanofiller in a second solvent to form a colloidal solution; dispersing the colloidal solution in a varnish for an enameled wire to form a varnish containing the silane-containing inorganic nanofiller; and coating the varnish containing the silane-containing inorganic nanofiller on a conductive wire and drying and heat curing the nanocomposite varnish coated on the conductive wire to form a film containing the silane-containing inorganic nanofiller so as to obtain the enameled wire. ### Claim 13 (depends on 12) The method of claim 12, wherein adding a third silane containing at least one hydrocarbon group having a number of carbon atoms of 1 to 3 followed by irradiating an ultrasonic wave is further included to form the silane-containing inorganic nanofiller. ### Claim 14 (depends on 12) The method of claim 12, wherein the inorganic nanofiller includes an inorganic compound selected from the group consisting of silica, titania, alumina, zirconia, yttria, a chrome oxide, a zinc oxide, an iron oxide, clay, and combinations thereof. ### Claim 15 (depends on 12) The method of claim 12, wherein the first silane includes a silane containing at least one aromatic cyclic group selected from the group consisting of trimethoxyphenylsilane, N-[3-(trimethoxysilyl)propyl]aniline, N-[3-(trimethoxysilyl)propyl]-n′-(4-vinylbenzyl)ethylenediamine, allylphenyldichlorosilane, aminophenyltrimethoxysilane, t-butylphenyldichlorosilane, p-(t-butyl)phenethyltrichlorosilane, 3,5-dimethoxyphenyltriethoxysilane, diphenyldiethoxysilane, diphenyldimethoxysilane, diphenylmethylethoxysilane, 3-(p-methoxyphenyl)propyltrichlorosilane, p-methoxyphenyltrimethoxysilane, phenethylmethyldichlorosilane, phenethyltrimethoxysilane, 3-phenoxypropyldimethylchlorosilane, 3-phenoxypropylmethyldichlorosilane, 3-phenoxypropyltrichlorosilane, phenyldimethylchlorosilane, phenyldimethylethoxysilane, phenylethyldichlorosilane, phenylmethyldichlorosilane, 1-phenyl-1-(methyldichlorosilyl)butane, phenylmethyldimethoxysilane, phenylmethyldiethoxysilane, (3-phenylpropyl)trichlorosilane, phenyltrichlorosilane, phenyltriethoxysilane, phenyltrimethoxysilane, triphenylchlorosilane, triphenylethoxysilane, (triphenylmethyl)methyldichlorosilane, and combinations thereof. ### Claim 16 (depends on 12) The method of claim 12, wherein the second silane includes a silane containing at least one amine group selected from the group consisting of 3-[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane, N-[3-(trimethoxysilyl)propyl]ethylenediamine, (3-aminopropyl)trimethoxysilane, and combinations thereof. ### Claim 17 (depends on 13) The method of claim 13, wherein the third silane includes a silane containing at least one hydrocarbon group having a number of carbon atoms of 1 to 3 selected from the group consisting of ethyltrimethoxysilane, methoxytrimethylsilane, ethoxytrimethylsilane, triethylchlorosilane, trimethylchlorosilane, and combinations thereof. ### Claim 18 (depends on 12) The method of claim 12, wherein the varnish for the enameled wire includes a varnish selected from the group consisting of a polyester varnish, a polyesterimide varnish, a polyesteramide varnish, a polyesteramideimide varnish, a (tri(2-hydroxy ethyl)isocyanurate triacrylate)-polyesterimide varnish, a polyetherimide varnish, a polyamide varnish, a polyamideimide varnish, a polyimide varnish, a polyurethane varnish, a polyvinyl formal varnish, and combinations thereof.