# US 2013/0153261 A1 · Electrical Insulation Enamels Composed of Modified Polymers and Electrical Conductors Produced Therefrom and Having Improved Sliding Capacity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153261 A1 - Document ID: US20130153261A1 - Status: Published application - Kind: A1 - Application number: 13/816,027 - Filed: 2011-08-10 - Published: 2013-06-20 - Earliest claimed: 2010-08-10 - Assignees: Schwering & Hasse Elektrodraht GmbH - Inventors: Wolfgang Bremser; Jorg Ressel; Johann Reicher - Web page: https://patentgrep.com/patent/US20130153261A1 ## CPC - C09D 177/00: Coating compositions based on polyamides obtained by reactions forming a carboxylic amide link in the main chain (based on polyhydrazides C09D179/06; based on polyamide-imides C09D179/08); Coating compositions based on derivatives of such polymers - C08G 18/0823: {containing carboxylate salt groups or groups forming them} - C08G 18/12: using two or more compounds having active hydrogen in the first polymerisation step - C08G 18/3206: {aliphatic} - C08G 18/3212: {containing cycloaliphatic groups} - C08G 18/348: {Hydroxycarboxylic acids} - C08G 18/4233: {derived from polymerised higher fatty acids or alcohols} - C08G 18/61: Polysiloxanes - C08G 69/48: Polymers modified by chemical after-treatment - C08G 77/12: containing silicon bound to hydrogen - C08G 77/20: containing silicon bound to unsaturated aliphatic groups - C08G 77/42: Block-or graft-polymers containing polysiloxane sequences (polymerising aliphatic unsaturated monomers on to a polysiloxane C08F283/12) - C08G 77/445: containing polyester sequences - C08G 77/455: containing polyamide, polyesteramide or polyimide sequences - C08G 77/458: containing polyurethane sequences - C09D 163/00: Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins - C09D 175/04: Polyurethanes - C09D 175/06: from polyesters - C09D 175/12: from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group - C09D 179/08: Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors - C09D 183/10: Block or graft copolymers containing polysiloxane sequences (obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C09D151/08, C09D153/00) - H01B 3/303: {Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302} - H01B 3/305: {Polyamides or polyesteramides} - H01B 3/306: {Polyimides or polyesterimides} - H01B 3/46: silicones - C08K 7/00: Use of ingredients characterised by shape - C08L 83/04: Polysiloxanes - H01F 5/06: Insulation of windings - 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) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - 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}) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract The present invention relates to electrical insulation enamels which contain a polymer comprising a base polymer and modifying units which are incompatible with the base polymer after the polymer has cured and lead to the formation of separate phases at the surface, and to processes for the production thereof. The electrical insulation enamels have a low coefficient of friction and frictional resistance and are preferably suitable for the coating of wires. ## Claims ### Claim at position 1 -31. (canceled) ### Claim 32 An electrical insulation enamel comprising a polymer comprising a base polymer and modifying units which are incompatible with the base polymer after the polymer has cured, wherein the base polymer is selected from the group consisting of polyamide-imides, polyester-imides, polyamides, polyurethanes, polyimides, polyester-amide-imides, polyepoxides, and mixtures or combinations thereof, wherein the modifying units are polydialkylsiloxanes which comprise 40 to 500 Si units. ### Claim 33 (depends on 32) The electrical insulation enamel of claim 32, comprising separate regions on the surface of the cured enamel after the polymer has cured. ### Claim 34 (depends on 32) The electrical insulation enamel of claim 32, wherein the modifying units are polydimethylsiloxanes. ### Claim 35 (depends on 32) The electrical insulation enamel of claim 32, wherein the base polymer is a polyamide-imide and/or a polyester-imide. ### Claim 36 (depends on 32) A cured electrical insulation enamel which can be obtained by thermally curing the electrical insulation enamel of claim 32, comprising separate regions on the surface of the cured electrical insulation enamel. ### Claim 37 (depends on 32) A process for producing the electrical insulation enamel of claim 32, comprising: polymerizing a first modified block, for example a monomer or a prepolymer, which comprises at least one modifying unit, with at least one second monomer, so as to obtain a polymer comprising modifying units; and, formulating the polymer comprising modifying units with a solvent and optionally additives so as to form an electrical insulation enamel. ### Claim 38 A process for producing a coated wire, comprising: polymerizing a first modified block, for example a monomer or a prepolymer, with at least one modifying unit comprising at least a second monomer, so as to obtain a polymer comprising modifying units; formulating the polymer comprising modifying units with a solvent and optionally additives so as to form an electrical insulation enamel; applying the electrical insulation enamel to a wire; and, subjecting the wire with the applied electrical insulation enamel to a firing process, there being separate regions on the surface of the cured electrical insulation enamel. ### Claim 39 (depends on 32) A wire coated with the electrical insulation enamel of claim 32. ### Claim 40 (depends on 32) A wire comprising electrical insulation enamel without modifying units wherein the electrical insulation enamel of claim 32 is applied, as an outer layer or layers, to the wire. ### Claim 41 (depends on 36) A wire, in particular a copper wire, coated with the electrical insulation enamel of claim 36. ### Claim 42 (depends on 36) A wire, in particular a copper wire, comprising an electrical insulation enamel without modifying units and an outer layer or layers of the electrical insulating enamel of claim 36. ### Claim 43 (depends on 41) A coil comprising the wire of claim 41. ### Claim 44 An electrical insulation enamel, comprising a polymer and polydialkylsiloxane gel particles, wherein the polymer is selected from the group consisting of polyamide-imides, polyester-imides, polyurethanes, polyesters, polyamides, polyimides, polyester-amide-imides, and mixtures or combinations thereof. ### Claim 45 (depends on 44) The electrical insulation enamel of claim 44, comprising separate regions on the surface of the cured enamel after the polymer has cured. ### Claim 46 (depends on 44) The electrical insulation enamel of claim 44, comprising polydimethylsiloxane gel particles. ### Claim 47 (depends on 44) The electrical insulation enamel of claim 44, wherein the polymer is a polyamide-imide. ### Claim 48 (depends on 44) A cured electrical insulation enamel which can be obtained by thermally curing the electrical insulation enamel of claim 44. ### Claim 49 (depends on 44) A process for producing the electrical insulation enamel of claim 44, comprising mixing a polysiloxane gel particle dispersion and an enamel which contains a polymer. ### Claim 50 (depends on 32, 49) The process of claim 49, wherein the enamel which contains the polymer is a conventional enamel or the electrical insulation enamel of claim 32. ### Claim 51 (depends on 44) A wire, in particular a copper wire, comprising the electrical insulation enamel of claim 44. ### Claim 52 (depends on 48) A wire, in particular a copper wire, coated with the electrical insulation enamel of claim 48. ### Claim 53 (depends on 48) A wire, in particular a copper wire, which comprises an electrical insulation enamel without modifying units and an outer layer or layers comprising the electrical insulation enamel of claim 48. ### Claim 54 (depends on 52) A coil, comprising the wire of claim 52.