# US 11,028,255 B2 · Composition for tire tread comprising resin alternative to process oil > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,028,255 B2 - Document ID: US11028255B2 - Status: Granted - Kind: B2 - Application number: 16/097,389 - Filed: 2017-09-29 - Published: 2019-05-16 - Granted: 2021-06-08 - Earliest claimed: 2016-09-30 - Applicants: Kolon Industries, Inc. - Inventors: Young-Deuck Lee - Web page: https://patentgrep.com/patent/US11028255B2 ## CPC - C08L 9/06: Copolymers with styrene - B60C 1/00: Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition - B60C 1/0016: {Compositions of the tread} - C08K 3/04: Carbon - C08K 3/06: Sulfur - C08K 3/22: of metals - C08K 3/36: Silica - C08K 5/00: Use of organic ingredients - C08K 5/09: Carboxylic acids; Metal salts thereof; Anhydrides thereof - C08L 21/00: Compositions of unspecified rubbers - C08L 61/14: Modified phenol-aldehyde condensates - C08L 101/00: Compositions of unspecified macromolecular compounds - B60C 2011/0025: {Modulus or tan delta} - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C08L 2205/035: containing four or more polymers in a blend - C08L 2205/08: containing additives to improve the compatibility between two polymers - 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 composition for a tire tread, comprising a resin alternative to a process oil. The composition for a tire tread, according to the present invention, can satisfy basic physical properties required as a tire, such as tensile strength, wear resistance, durability, and hardness, and improve the gripping force without a big increase in rolling resistance. A tire manufactured from the composition has the improved gripping force, particularly on wet road surfaces, and thus may be used for manufacturing a high-performance tire with excellent breakability, thereby being capable of increasing product competitiveness. ## Claims ### Claim 1 A composition for a tire tread, comprising at least one resin selected from the group consisting of a methylstyrenated phenol-based resin, and a hydrocarbon-based resin, and at least one resin selected from the group consisting of a terpene phenol resin and a hydrogenated hydrocarbon-based resin, wherein the methylstyrenated phenol-based resin and the hydrocarbon-based resin do not comprise a softening point measured by ASTM E 28, and wherein the hydrogenated hydrocarbon-based resin and the terpene phenol resin comprise a softening point measured by ASTM E 28. ### Claim 2 (depends on 1) The composition for the tire tread according to claim 1, wherein the composition for the tire tread does not comprise a process oil. ### Claim 3 (depends on 1) The composition for the tire tread according to claim 1, wherein the weight-average molecular weight of the methylstyrenated phenol-based resin is 200 to 5,000 g/mol; the weight-average molecular weight of the hydrocarbon-based resin is 400 to 5,000 g/mol; the weight-average molecular weight of the hydrogenated hydrocarbon-based resin is 500 to 5,000 g/mol, and its Tg is 30 to 100° C. and its softening point is 100 to 150° C.; and the weight-average molecular weight of the terpene phenol resin is 500 to 5,000 g/mol, and its Tg is 20 to 100° C. and its softening point is 100 to 150° C. ### Claim 4 (depends on 1) The composition for the tire tread according to claim 1, comprising the methylstyrenated phenol-based resin and the terpene phenol resin. ### Claim 5 (depends on 1) The composition for the tire tread according to claim 1, comprising a first resin selected from the group consisting of a methylstyrenated phenol-based resin and a hydrogenated hydrocarbon-based resin, and a second resin selected from the group consisting of a terpene phenol resin and a hydrocarbon-based resin, and the weight ratio of the first resin to the second resin is 30:70 to 70:30. ### Claim 6 (depends on 5) The composition for the tire tread according to claim 5, wherein the first and second resins respectively have a weight ratio of 1 to 10 weight relative to 100 parts by weight of a raw material rubber. ### Claim 7 (depends on 1) The composition for the tire tread according to claim 1, comprising 1 to 10 parts by weight of each of a first resin selected from the group consisting of a methylstyrenated phenol-based resin and a hydrogenated hydrocarbon-based resin, and a second resin selected from the group consisting of a terpene phenol resin and a hydrocarbon-based resin, 1 to 3 parts by weight of a homogenizing agent, 1 to 5 parts by weight of zinc oxide, 10 to 40 parts by weight of silica, 1 to 10 parts by weight of a silane coupling agent, 10 to 40 parts by weight of carbon black, 1 to 3 parts by weight of stearic acid, 1 to 3 parts by weight of sulfur and 1 to 5 parts by weight of a curing accelerator based on 100 to 160 parts by weight of a raw material rubber. ### Claim 8 (depends on 2) The composition for the tire tread according to claim 2, wherein the value of Tan δ at 0° C. of the composition for the tire tread is as high as 10% or more compared to the composition for the tire tread containing the process oil. ### Claim 9 (depends on 2) The composition for the tire tread according to claim 2, wherein the value of Tan δ at 70° C. of the composition for the tire tread is as high as 4% or less compared to the composition for the tire tread containing the process oil.