# US 2014/0155519 A1 · Tire with a tread comprising an emulsion sbr having a high trans content > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155519 A1 - Document ID: US20140155519A1 - Status: Published application - Kind: A1 - Application number: 14/116,112 - Filed: 2012-05-04 - Published: 2014-06-05 - Earliest claimed: 2011-05-06 - Assignees: Compagnie Generale Des Etablissements Michelin - Applicants: Compagnie Generale Des Etablissements Michelin - Inventors: Claude Ringot - Web page: https://patentgrep.com/patent/US20140155519A1 ## CPC - C08L 9/06: Copolymers with styrene - B60C 1/0016: {Compositions of the tread} - C08K 3/013: Fillers, pigments or reinforcing additives - C08K 5/0016: {Plasticisers} - C08K 5/01: Hydrocarbons {(C08K5/0091 takes precedence)} - C08L 91/00: Compositions of oils, fats or waxes; Compositions of derivatives thereof - C08L 93/00: Compositions of natural resins; Compositions of derivatives thereof (of polysaccharides C08L1/00 - C08L5/00; of natural rubber C08L7/00) - Y02T 10/86: Optimisation of rolling resistance, e.g. weight reduction - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract The present invention relates to a tyre, the tread of which comprises a rubber composition comprising at least: from 40 to 100 phr of an emulsion styrene/butadiene copolymer (E-SBR), referred to as first diene elastomer, the content of trans-1,4-butadienyl units of which is greater than 50% by weight of the total of the butadienyl units; optionally, from 0 to 60 phr of another diene elastomer referred to as second diene elastomer; from 90 to 150 phr of a reinforcing inorganic filler; a plasticizing system comprising: according to a content A of between 10 and 60 phr, a hydrocarbon resin exhibiting a Tg of greater than 20° C.; according to a content B of between 10 and 60 phr, a plasticizer which is liquid at 20° C., the Tg of which is less than −20° C.; it being understood that A+B is greater than 45 phr. The use of such an emulsion SBR, in combination with high contents of inorganic filler and of plasticizer, in the tread compositions of the tyre according to the invention makes it possible to obtain a greatly improved wet grip, in comparison with a control composition, without damaging the rolling resistance. ## Claims ### Claim 1 A tire, the tread of which comprises a rubber composition comprising at least: from 40 to 100 phr of an emulsion styrene/butadiene copolymer “E-SBR”, referred to as first diene elastomer, the content of trans-1,4-butadienyl units of which is greater than 50% by weight of the total of the butadienyl units; optionally, from 0 to 60 phr of another diene elastomer referred to as second diene elastomer; from 90 to 150 phr of a reinforcing inorganic filler; a plasticizing system comprising: according to a content A of between 10 and 60 phr, a hydrocarbon resin exhibiting a Tg of greater than 20° C.; according to a content B of between 10 and 60 phr, a plasticizer which is liquid at 20° C., the Tg of which is less than −20° C.; it being understood that A+B is greater than 45 phr. ### Claim 2 (depends on 1) A tire according to claim 1, in which the content of trans-1,4-butadienyl units of the E-SBR is greater than 60% by weight of the total of the butadienyl units. ### Claim 3 (depends on 1) A tire according to claim 1, in which the styrene content of the E-SBR is at most equal to 50% by weight of the copolymer. ### Claim 4 (depends on 1) A tire according to claim 1, in which the rubber composition comprises from 45 to 100 phr of E-SBR. ### Claim 5 (depends on 1) A tire according to claim 1 in which the second diene elastomer is selected from the group consisting of natural rubber, synthetic polyisoprenes, butadiene copolymers, isoprene copolymers and the mixtures of these elastomers. ### Claim 6 (depends on 5) A tire according to claim 5, in which the second diene elastomer is selected from the group consisting of polybutadienes, natural rubber and the mixtures of these elastomers. ### Claim 7 (depends on 1) A tire according to claim 1, in which A+B is between 50 and 100 phr. ### Claim 8 (depends on 1) A tire according to claim 1, in which the hydrocarbon resin is selected from the group consisting of cyclopentadiene homopolymer or copolymer resins, dicyclopentadiene homopolymer or copolymer resins, terpene homopolymer or copolymer resins, C5 fraction homopolymer or copolymer resins, C9 fraction homopolymer or copolymer resins, α-methylstyrene homopolymer or copolymer resins and the mixtures of these resins. ### Claim 9 (depends on 1) A tire according to claim 1, in which the liquid plasticizer is selected from the group consisting of liquid diene polymers, polyolefin oils, naphthenic oils, paraffinic oils, DAE oils, MES oils, TDAE oils, RAE oils, TRAE oils, SRAE oils, mineral oils, vegetable oils, ether plasticizers, ester plasticizers, phosphate plasticizers, sulphonate plasticizers and the mixtures of these compounds. ### Claim 10 (depends on 9) A tire according to claim 9, in which the liquid plasticizing agent is selected from the group consisting of MES oils, TDAE oils, naphthenic oils, vegetable oils and the mixtures of these oils. ### Claim 11 (depends on 1) A tire according to claim 1, in which the reinforcing inorganic filler comprises silica. ### Claim 12 (depends on 11) A tire according to claim 11, in which the rubber composition comprises a mixture of carbon black and silica.