# US 2015/0147571 A1 · Fire resistant compositions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0147571 A1 - Document ID: US20150147571A1 - Status: Published application - Kind: A1 - Application number: 14/533,225 - Filed: 2014-11-05 - Published: 2015-05-28 - Earliest claimed: 2013-11-28 - Applicants: Nexans - Inventors: Graeme Alexander; Ivan Ivanov - Web page: https://patentgrep.com/patent/US20150147571A1 ## CPC - H01B 7/295: using material resistant to flame - C08K 3/36: Silica - C08L 23/04: Homopolymers or copolymers of ethene - C08L 23/06: Polyethylene - C08L 83/04: Polysiloxanes - H01B 3/441: {from alkenes} - H01B 3/46: silicones - C08K 2201/019: the composition being defined by the absence of a certain additive - Y10T 428/2933: Coated or with bond, impregnation or core - Y10T 428/2962: Silane, silicone or siloxane in coating - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A fire resistant composition for use in fire resistant cables including at least one organic polymer and at least one inorganic material, where the fire resistant composition is adapted to provide after exposure to high temperature a high resistance residue including 10% by weight of SiO2. ## Claims ### Claim 1 A fire resistant composition comprising: at least one organic polymer; and at least one inorganic material, wherein said fire resistant composition is adapted to provide after exposure to high temperature a high resistance residue including at least 10% by weight of SiO2. ### Claim 2 (depends on 1) Afire resistant composition as claimed in claim 1, wherein the inorganic material is an inorganic non polymeric material, or a mixture of an inorganic non polymeric material and an inorganic polymeric material. ### Claim 3 (depends on 1) A fire resistant composition as claimed in claim 1, wherein the inorganic non polymeric material includes at least 2% by weight of silica (SiO2). ### Claim 4 (depends on 1) A fire resistant composition as claimed in claim 1, wherein the inorganic non polymeric material includes up to 45% by weight of silica (SiO2). ### Claim 5 (depends on 3) A fire resistant composition as claimed in claim 3, wherein the inorganic non polymeric material is fumed silica. ### Claim 6 (depends on 1) A fire resistant composition as claimed in claim 1, wherein the inorganic polymeric material includes a least one polyorganosiloxane. ### Claim 7 (depends on 6) A fire resistant composition as claimed in claim 6, wherein the inorganic polymeric material includes up to 45% by weight of polyorganosiloxanes. ### Claim 8 (depends on 6) A fire resistant composition as claimed in claim 6, wherein the inorganic polymeric material includes at least 2% by weight of polyorganosiloxanes. ### Claim 9 (depends on 6) A fire resistant composition as claimed in claim 6, wherein the polyorganosiloxane is in the form of pelletized silicone polymer. ### Claim 10 (depends on 1) A fire resistant composition as claimed in claim 1, wherein the organic polymer is selected from the group consisting of ethylene-butene copolymer, linear low density polyethylene (LLDPE), ethylene-octene copolymer, ethylene-acrylic ester maleic anhydride terpolymer, ethylene propylene polymer (EPR), ethylene propylene diene polymer (EPDM), and mixture thereof. ### Claim 11 (depends on 1) A fire resistant composition as claimed in claim 1, further including at least one inorganic filler. ### Claim 12 (depends on 11) A fire resistant composition as claimed in claim 11, wherein the inorganic filler has low conductivity at elevated temperatures. ### Claim 13 (depends on 11) A fire resistant composition as claimed in claim 11, wherein the inorganic filler is selected from non-reactive silicates. ### Claim 14 (depends on 1) A fire resistant composition as claimed in claim 1, wherein said fire resistant composition does not include glass forming components. ### Claim 15 (depends on 1) Afire resistant composition as claimed in claim 1, wherein the composition is a fire resistant thermoplastic composition. ### Claim 16 (depends on 1) A fire resistant composition as claimed in claim 1, wherein the composition is a fire resistant insulating composition. ### Claim 17 (depends on 1) A cable comprising: an elongated electrical conductor, an inner layer obtained from the fire resistant composition as claimed in claim 1, said inner layer surrounding said elongated electrical conductor, and an outer ceramifying layer surrounding said inner layer. ### Claim 18 (depends on 17) A cable as claimed in claim 17, wherein the inner layer is a thermoplastic layer. ### Claim 19 (depends on 17) A cable as claimed in claim 17, wherein the outer layer is a thermoplastic layer. ### Claim 20 (depends on 17) A cable as claimed in claim 17, wherein the outer ceramifying layer is the outmost layer of the cable.