# US 10,119,012 B2 · Flame-retarded polyolefin polymer composition with reduced antimony trioxide content > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,012 B2 - Document ID: US10119012B2 - Status: Granted - Kind: B2 - Application number: 15/114,671 - Filed: 2015-02-02 - Published: 2016-11-24 - Granted: 2018-11-06 - Earliest claimed: 2014-02-12 - Assignees: ICL-IP America Inc. - Applicants: ICL-IP America Inc. - Inventors: Yelena Assor; Loir Melamed; Marc Leifer; Sergei V. Levchik; Eyal Eden - Web page: https://patentgrep.com/patent/US10119012B2 ## CPC - C08K 9/12: Adsorbed ingredients {, e.g. ingredients on carriers} - C08K 3/2279: {of antimony} - C08K 5/03: aromatic {, e.g. C6H5-CH2-Cl} - C08L 23/06: Polyethylene - C08L 23/12: Polypropene - C08L 27/18: Homopolymers or copolymers or tetrafluoroethene - C09K 21/08: containing halogen - H01B 3/441: {from alkenes} - C08K 2003/387: {Borates} - C08L 2201/02: Flame or fire retardant/resistant - C08L 2203/202: use in electrical wires or wirecoating - 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) - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - 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}) ## Abstract There is provided herein a flame-retarded polyolefin polymer composition with reduced antimony trioxide content comprising: (a) at least one polyolefin polymer; (b) at least one brominated flame retardant (c) at least one antimony trioxide synergist and, (d) at least one calcium borate on an inorganic carrier. There is also provided a method of making said flame retarded polyolefin polymer composition and article thereof. ## Claims ### Claim 1 A flame-retarded polyolefin polymer composition comprising: (a) at least one polyolefin polymer in an amount from about 50 wt % to about 95 wt %; (b) at least one brominated flame retardant in an amount of from about 2 wt % to about 40 wt %; (c) at least one antimony synergist in an amount of from about 0.5 wt % to about 10 wt % and, (d) calcium borate on an inorganic carrier which is made by a process of reacting boric acid and lime in the presence of the inorganic carrier, and which is present in an amount of from about 1 wt % to about 10 wt %, and wherein the inorganic carrier is selected from the group consisting of aluminum hydroxide, boehmite, natural calcium carbonate, precipitated calcium carbonate, calcium sulphate, carbon black, carbon fibers, clay, cristobalite, diamotaceous earth, dolomite, feldspar, graphite, glass beads, glass fibers, kaolin, metal powders or fibers, mica muscovite, mica phlogopite, natural silica, synthetic silica, silicates, nepheline-syenite, talc, whiskers, natural wollastonite, or synthetic calcium silicate, and combinations thereof, all said amounts being based on the total weight of the flame-retarded polyolefin polymer composition, and wherein the composition contains from 10 wt % to about 90 wt % less antimony synergist than the amount of antimony synergist present in an identical flame-retarded polyolefin polymer composition that is in the absence of the calcium borate on the inorganic carrier while still providing a V-0 flame retardancy. ### Claim 2 (depends on 1) The flame-retarded polyolefin polymer composition of claim 1, wherein polyolefin polymer (a) is at least one selected from the group consisting of high-density polyethylene, low-density polyethylene, linear low density polyethylene, polyethylene copolymers, crystalline polypropylene, amorphous polypropylene, and polypropylene copolymers. ### Claim 3 (depends on 1) The flame-retarded polyolefin polymer composition of claim 1, wherein polyolefin polymer (a) is selected from the group consisting of ethylene-vinyl acetate (EVA); ethylene-propylene rubber (EPR); ethylene-propylene-diene-monomer rubber (EPDM); copolymers of ethylene or propylene with one of butene-1, pentene-1, 3-methylbutene-1, 4-methylpentene-1, or octene-1; and, mixtures thereof. ### Claim 4 (depends on 1) The flame-retarded polyolefin polymer composition of claim 1, wherein brominated flame retardant (b) is at least one compound selected from the group consisting of decabromodiphenyl oxide, tetrabromobisphenol A, tetrabromobisphenol A bis (2,3-dibromopropyl ether), tris(tribromoneopentyl)triazine, tris(tribromoneopenyl) phosphate, brominated polyacrylate, brominated polystyrene, brominated epoxy polymers, brominated end-capped epoxy polymers, phenoxy-terminated carbonate oligomer of tetrabromobisphenol A, decabromodiphenylethane, tetradecabromodiphenoxybenzene, ethylenebistetrabromophthalimide, tetrabromobisphenol S bis (2,3-dibromopropyl ether), poly-dibromophenylene oxide, 2-ethylhexyl tetrabromophthalate ester and bis (tribromophenoxy) ethane. ### Claim 5 (depends on 1) The flame-retarded polyolefin polymer composition of claim 1, wherein the antimony synergist (c) is antimony trioxide. ### Claim 6 (depends on 1) The flame-retarded polyolefin polymer composition of claim 1, wherein the inorganic carrier is natural wollastonite. ### Claim 7 (depends on 1) The flame-retarded polyolefin polymer composition of claim 1, further comprising an antidripping agent which is polytetrafluoroethylene. ### Claim 8 (depends on 5) The flame-retarded polyolefin polymer composition of claim 5 wherein the antimony trioxide content is from about 2 wt % to about 7 wt % based on the total weight of the flame-retarded polyolefin polymer composition. ### Claim 9 (depends on 1) The flame-retarded polyolefin polymer composition of claim 1 wherein the polyolefin polymer (a) is present in an amount of from about 65 wt % to about 90 wt %; brominated flame retardant (b) in an amount of from about 5 wt % to about 30 wt %; antimony synergist (c) in an amount of from about 2 wt % to about 7 wt % weight percent and calcium borate on silicate carrier (d), in an amount of from about 2 wt % to about 7 wt % all based on the total weight of the flame-retarded polyolefin polymer composition. ### Claim 10 (depends on 1) An article comprising the flame-retarded polyolefin polymer composition of claim 1. ### Claim 11 (depends on 10) The article of claim 10 wherein the article is an electronic part. ### Claim 12 (depends on 10) The article of claim 10 wherein the article is a building construction element. ### Claim 13 (depends on 10) The article of claim 10 wherein the article is a wire and cable insulation. ### Claim 14 A method of making a flame-retarded polyolefin thermoplastic article comprising: (1) blending: (a) at least one polyolefin polymer in an amount from about 50 wt % to about 95 wt %; (b) at least one brominated flame retardant in an amount of from about 2 wt % to about 40 wt %; (c) at least one antimony synergist in an amount of from about 0.5 wt % to about 10 wt %; (d) calcium borate on an inorganic carrier which is made by a process of reacting boric acid and lime in the presence of the inorganic carrier, in an amount of from about 1 wt % to about 10 wt %, wherein the inorganic carrier is selected from the grout) consisting of aluminum hydroxide, boehmite, natural calcium carbonate, precipitated calcium carbonate, calcium sulphate, carbon black, carbon fibers, clay, cristobalite, diatomaceous earth, dolomite, feldspar, graphite, glass beads, glass fibers, kaolin, metal powders or fibers, mica muscovite, mica phlogopite, natural silica, synthetic silica, silicates, nepheline-svenite, talc, whiskers, natural wollastonite, or synthetic calcium silicate, and combinations thereof; and optionally, at least one selected from the group consisting of an antidripping agent, a filler, an antioxidant, a heat stabilizer and a lubricant, to provide a flame-retarded polyolefin polymer composition, all said amounts being based on the total weight of the flame-retarded polyolefin polymer composition, which composition contains from 10 wt % to about 90 wt % less antimony synergist than the amount of antimony synergist present in an identical flame-retarded polyolefin polymer composition that is in the absence of calcium borate on the inorganic carrier while still providing a V-0 flame retardancy; and, (2) shaping the flame retarded polymer composition into a flame-retarded thermoplastic polyolefin article. ### Claim 15 (depends on 14) A flame-retarded thermoplastic article made by the claim 14. ### Claim 16 (depends on 15) The article of claim 15 wherein the article is an electronic part. ### Claim 17 (depends on 15) The article of claim 15 wherein the article is a building construction element. ### Claim 18 (depends on 15) The article of claim 15 wherein the article is a wire and cable insulation.