# US 10,870,767 B2 · Multifunctional paints and caulks with controllable electromagnetic properties > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,870,767 B2 - Document ID: US10870767B2 - Status: Granted - Kind: B2 - Application number: 16/846,287 - Filed: 2020-04-11 - Published: 2020-07-30 - Granted: 2020-12-22 - Earliest claimed: 2018-11-16 - Applicants: Conductive Composites Company IP, LLC - Inventors: George Clayton Hansen - Web page: https://patentgrep.com/patent/US10870767B2 ## CPC - C09D 5/32: Radiation-absorbing paints {(protection against X-, gamma- or corpuscular radiation G21F)} - C09D 5/24: Electrically-conducting paints {(conductive materials H01B1/00)} - C09D 7/61: inorganic - C09D 7/70: {characterised by shape, e.g. fibres, flakes or microspheres} - H01B 1/22: the conductive material comprising metals or alloys - H05K 9/0079: {Electrostatic discharge protection, e.g. ESD treated surface for rapid dissipation of charges} - H05K 9/009: {comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked} - H05K 9/0092: {comprising electro-conductive pigments, e.g. paint, ink, tampon printing} - C08K 3/04: Carbon - C08K 7/06: Elements - C08K 9/10: Encapsulated ingredients - C08K 2003/0862: {Nickel} - C08K 2201/001: Conductive additives - C08K 2201/003: Additives being defined by their diameter - 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) - 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}) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract An electrically conductive paint/caulk is disclosed that may be applied by spraying, rolling, and/or brushing using conventional techniques/may be dispensed from a tube. The electrically conductive paint/caulk has a plurality of metal-coated fibers precision chopped to short lengths, optionally a plurality of conductive filament structures having a high-aspect ratio, and a polymer base. The metal-coated fibers and optional conductive filament structures are dispersed uniformly within the polymer base to create a complex electron transport system facilitating conductivity sufficient for a full range of electromagnetic properties including electrostatic dissipation, electrostatic discharge, and shielding. The complex electron transport system created facilitates the full range of electromagnetic properties with lower loadings of conductors, reduces viscosity, and the additional unloaded portion of paint/caulk receives other multifunctional additives. ## Claims ### Claim 1 An electrically conductive paint that may be applied by spraying, rolling, and/or brushing using conventional techniques, the electrically conductive paint comprising: a plurality of nickel-coated carbon fibers comprising carbon fibers having diameters ranging from 3 microns up to 7 microns and a nickel coating, the nickel-coated carbon fibers being precision chopped to lengths of 0.05 millimeters to 1 millimeter; 0% or more of a plurality of conductive filament structures having a branched structure and a high-aspect ratio; and a polymer base, the nickel-coated carbon fibers and the 0% or more of conductive filament structures being dispersed uniformly within the polymer base such that the volume resistivity of the electrically conductive paint ranges from 108 to 103 ohm-cm. ### Claim 2 (depends on 1) The electrically conductive paint of claim 1 wherein the nickel coating has a thickness such that the nickel ranges from 15% to 75% of the metal-coated fiber by weight. ### Claim 3 (depends on 1) The electrically conductive paint of claim 1 wherein the nickel coating has a thickness such that the nickel is about 20% of the metal-coated fiber by weight. ### Claim 4 (depends on 1) The electrically conductive paint of claim 1 wherein the nickel coating has a thickness such that the nickel is about 40% of the metal-coated fiber by weight. ### Claim 5 (depends on 1) The electrically conductive paint of claim 1 wherein the electrically conductive paint exhibits protection from at least one of electrostatic dissipation and electrostatic discharge. ### Claim 6 (depends on 1) The electrically conductive paint of claim 1 further comprising a functional additive. ### Claim 7 (depends on 6) The electrically conductive paint of claim 6 wherein the functional additive is selected from the group of functional additives consisting of coloring particles, hardening agents, lubricating agents, magnetic particles, and any combination of such additives. ### Claim 8 A multifunctional, electrically conductive paint that may be applied by spraying, rolling, and/or brushing using conventional techniques, the electrically conductive paint comprising: a plurality of nickel-coated carbon fibers comprising carbon fibers and a nickel coating having a thickness such that the nickel ranges from 15% to 75% of the nickel-coated carbon fiber by weight, the nickel-coated carbon fibers being chopped to lengths of 0.05 millimeters to 1 millimeter; 0% or more of a plurality of conductive filament structures having a branched structure and a high-aspect ratio; a functional additive, and a polymer base, the nickel-coated carbon fibers and the 0% or more of conductive filament structures being dispersed uniformly within the polymer base such that the volume resistivity of the electrically conductive paint ranges from 108 to 103 ohm-cm. ### Claim 9 (depends on 8) The multifunctional, electrically conductive paint of claim 8 wherein the functional additive is selected from the group of functional additives consisting of coloring particles, hardening agents, lubricating agents, magnetic particles, and any combination of such additives. ### Claim 10 (depends on 8) The multifunctional, electrically conductive paint of claim 8 wherein carbon fibers having diameters ranging from 3 microns up to 7 microns. ### Claim 11 (depends on 8) The multifunctional, electrically conductive paint of claim 8 wherein the nickel metal coating has a thickness such that the nickel is about 20% of the metal-coated fiber by weight. ### Claim 12 (depends on 8) The multifunctional, electrically conductive paint of claim 8 wherein the nickel metal coating has a thickness such that the nickel is about 40% of the metal-coated fiber by weight. ### Claim 13 (depends on 8) The multifunctional, electrically conductive paint of claim 8 wherein the electrically conductive paint exhibits protection from at least one of electrostatic dissipation and electrostatic discharge. ### Claim 14 An electrically conductive caulk that is pliable and dispensable from a tube, the electrostatic discharge caulk comprising: a plurality of nickel-coated carbon fibers comprising carbon fibers having diameters ranging from 3 microns up to 7 microns and a nickel coating, the nickel-coated carbon fibers being chopped to lengths of 0.1 millimeters to 1 millimeter; 0% or more of a plurality of conductive filament structures having a branching structure and a high-aspect ratio; and a polymer base, the nickel-coated carbon fibers and conductive structures being dispersed uniformly within the polymer base such that the volume resistivity of the electrically conductive caulk ranges from 108 to 103 ohm-cm. ### Claim 15 (depends on 14) The electrically conductive caulk of claim 14 further comprising a functional additive. ### Claim 16 (depends on 15) The electrically conductive caulk of claim 15 wherein the functional additive is selected from the group of functional additives consisting of coloring particles, hardening agents, lubricating agents, magnetic particles, and any combination of such additives. ### Claim 17 (depends on 14) The electrically conductive caulk of claim 14 wherein the nickel coating has a thickness such that the nickel ranges from 15% to 75% of the metal-coated fiber by weight. ### Claim 18 (depends on 14) The electrically conductive caulk of claim 14 wherein the nickel coating has a thickness such that the nickel is about 20% of the metal-coated fiber by weight. ### Claim 19 (depends on 14) The electrically conductive caulk of claim 14 wherein the nickel coating has a thickness such that the nickel is about 40% of the metal-coated fiber by weight. ### Claim 20 (depends on 14) The electrically conductive caulk of claim 14 wherein the electrically conductive paint exhibits protection from at least one of electrostatic dissipation and electrostatic discharge.