# US 2013/0153101 A1 · Truck tire with rubber tread > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153101 A1 - Document ID: US20130153101A1 - Status: Published application - Kind: A1 - Application number: 13/331,352 - Filed: 2011-12-20 - Published: 2013-06-20 - Earliest claimed: 2011-12-20 - Assignees: The Goodyear Tire & Rubber Company - Inventors: Lothar Braun; Fahri Ozel; Carolin Anna Welter; Jean-Marie Feller; Tom Dominique Linster; Julia Martine Francoise Claudine Tahon - Web page: https://patentgrep.com/patent/US20130153101A1 ## CPC - C08L 7/00: Compositions of natural rubber - B60C 1/0016: {Compositions of the tread} - C08K 3/36: Silica - C08K 5/09: Carboxylic acids; Metal salts thereof; Anhydrides thereof - C08L 9/00: Compositions of homopolymers or copolymers of conjugated diene hydrocarbons - Y10T 152/10495: Pneumatic tire or inner tube - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract This invention relates to a tire with a circumferential rubber tread comprised of a rubber composition for promotion of reduced internal heat build-up. The invention particularly relates to truck tires. ## Claims ### Claim 1 A pneumatic tire with a circumferential tread having a cap/base configuration comprised of an outer tread cap rubber layer and an internal rubber layer underlying said outer tread cap rubber layer rubber, wherein the rubber composition of said tread cap rubber layer is comprised of, based on parts by weight per 100 parts by weight rubber (phr): (A) elastomers comprised of (1) about 65 to about 90 phr of cis 1,4-polyisoprene rubber, (2) about 5 to about 25 phr of cis 1,4-polybutadiene rubber, (3) zero to about 12 phr of 3,4-polyisoprene rubber and (4) optionally up to about 20 phr of at least one additional rubber selected from polymers of at least one of isoprene and 1,3-butadiene and copolymers of styrene and at least one of isoprene and 1,3-butadiene, (B) about 1 to about 8 phr of salt of at least one fatty acid comprised of the product of at least one of stearic, palmitic and oleic acid and at least one of zinc oxide, magnesium oxide and calcium carbonate, (C) zero to about 20 phr of hydrocarbon resin, (D) about 45 to about 70 phr of reinforcing filler comprised of: (1) precipitated silica having a nitrogen surface area (BET) in a range of from about 210 to about 225 m2/g, together with a coupling agent for said precipitated silica having a moiety reactive with hydroxyl groups (e.g. silanol groups) on said precipitated silica and another, different, moiety interactive with said elastomer(s), or (2) a combination of rubber reinforcing carbon black and said precipitated silica containing from about 2 to about 15 phr of said rubber reinforcing carbon black, together with coupling agent for said precipitated silica having a moiety reactive with hydroxyl groups on said precipitated silica and another, different, moiety interactive with said elastomer(s), and (E) curative for said rubber composition comprised of sulfur and sulfur cure accelerator where said sulfur cure accelerator is comprised of a combination of primary sulfur cure accelerator and secondary sulfur cure accelerator, where said primary sulfur cure accelerator is comprised of at least one of N-tertbutyl-2-benzothiazolesulfenamide and N—N-dicyclohexyl-2-benzothiazolesulfenamide, and where said secondary sulfur cure accelerator is comprised of 1,6-bis(N,N-dibenzylthiocarbamoyldithio)hexane. ### Claim 2 (depends on 1) The tire of claim 1 wherein said secondary sulfur cure accelerator further includes diphenyl guanidine. ### Claim 3 (depends on 1) The tire of claim 1 wherein said rubber composition contains from about 5 to about 20 phr of said hydrocarbon resin. ### Claim 4 (depends on 1) The tire of claim 1 wherein said rubber composition contains from about 5 to about 12 phr of said 3,4-polyisoprene rubber. ### Claim 5 (depends on 4) The tire of claim 4 wherein said rubber composition contains from about 5 to about 12 phr of said 3,4-polyisoprene rubber. ### Claim 6 (depends on 1) The tire of claim 1 wherein said rubber composition contains up to about 20 phr of at least one additional rubber selected from polymers of at least one of isoprene and 1,3-butadiene and copolymers of styrene and at least one of isoprene and 1,3-butadiene. ### Claim 7 (depends on 5) The tire of claim 5 wherein said rubber composition contains up to about 20 phr of at least one additional rubber selected from polymers of at least one of isoprene and 1,3-butadiene and copolymers of styrene and at least one of isoprene and 1,3-butadiene. ### Claim 8 (depends on 1) The tire of claim 1 wherein said rubber composition contains about 1 to about 8 phr of salt of at least one fatty acid comprised of the product of at least one of stearic, palmitic and oleic acid and zinc oxide. ### Claim 9 (depends on 5) The tire of claim 5 wherein said rubber composition contains about 1 to about 8 phr of salt of at least one fatty acid comprised of the product of at least one of stearic, palmitic and oleic acid and zinc oxide. ### Claim 10 (depends on 1) The tire of claim 1 wherein said rubber composition contains about 1 to about 8 phr of salt of at least one fatty acid comprised of the product of at least one of stearic, palmitic and oleic acid and calcium carbonate. ### Claim 11 (depends on 5) The tire of claim 5 wherein said rubber composition contains about 1 to about 8 phr of salt of at least one fatty acid comprised of the product of at least one of stearic, palmitic and oleic acid and calcium carbonate. ### Claim 12 (depends on 5) The tire of claim 5 wherein said rubber composition contains up to about 20 phr of at least one additional rubber selected from polymers of at least one of isoprene and 1,3-butadiene and copolymers of styrene and at least one of isoprene and 1,3-butadiene. ### Claim 13 (depends on 9) The tire of claim 9 wherein said rubber composition contains up to about 20 phr of at least one additional rubber selected from polymers of at least one of isoprene and 1,3-butadiene and copolymers of styrene and at least one of isoprene and 1,3-butadiene. ### Claim 14 (depends on 1) The tire of claim 1 where the weight ratio of said precipitated silica to said carbon black is in a range of from about 8.5/1 to about 9.2/1. ### Claim 15 (depends on 5) The tire of claim 5 where the weight ratio of said precipitated silica to said carbon black is in a range of from about 8.5/1 to about 9.2/1. ### Claim 16 (depends on 9) The tire of claim 9 where the weight ratio of said precipitated silica to said carbon black is in a range of from about 8.5/1 to about 9.2/1. ### Claim 17 (depends on 11) The tire of claim 11 where the weight ratio of said precipitated silica to said carbon black is in a range of from about 8.5/1 to about 9.2/1. ### Claim 18 (depends on 1) The tire of claim 1 wherein said rubber composition contains from about 52 to about 65 phr of said precipitated silica. ### Claim 19 (depends on 1) The tire of claim 1 wherein said rubber composition contains from about 52 to about 65 phr of reinforcing filler comprised of a combination of precipitated silica about 5 to about 20 phr of rubber reinforcing carbon black. ### Claim 20 (depends on 5) The tire of claim 5 wherein said rubber composition contains from about 52 to about 65 phr of reinforcing filler comprised of a combination of precipitated silica about 5 to about 20 phr of rubber reinforcing carbon black.