-
公开(公告)号：US20170151834A1
公开(公告)日：2017-06-01
申请号：US15431499
申请日：2017-02-13
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Mutsuki SUGIMOTO , Tsuyoshi TSUCHIDA , Tomomi MASUI , Reika OTAKE
CPC classification number: B60C5/14 , B29C48/08 , B29C48/12 , B29C48/21 , B29C48/30 , B29C48/305 , B29C48/91 , B29C48/92 , B29C2948/9259 , B29C2948/92704 , B29C2948/92714 , B29C2948/92857 , B29D30/0681 , B29D2030/0682 , B29K2009/06 , B32B25/08 , B32B25/18 , B32B27/08 , B32B27/302 , B32B2274/00 , B32B2307/54 , B32B2307/724 , B32B2307/7242 , B32B2605/08 , B60C1/0008 , B60C2005/145 , C08L53/00 , Y02T10/862
Abstract: Provided is a pneumatic tire having improved air permeability resistance by improving adhesive property between an inner liner and a tire component adjacent thereto, reduced rolling resistance, and improved low temperature durability. The inner liner is composed of a polymer layer stack including a first layer containing an SIBS and a second layer containing at least one of an SIS and an SIB. At least one of the first layer and the second layer is a polymer composition containing one of a C4 polymer obtained by polymerizing a monomer unit having 4 carbon atoms, a layered clay mineral with an organic compound intercalated therein and at least one kind of rubber component selected from the group consisting of a natural rubber, an isoprene rubber and a butyl rubber. The second layer is arranged to come into contact with a rubber layer of the carcass ply. The inner liner has a thickness Ge at a shoulder position Pe exceeding 100% and being less than or equal to 500% of a thickness Gc at a crown central position Pc.
-
公开(公告)号：US20190300658A1
公开(公告)日：2019-10-03
申请号：US16443494
申请日：2019-06-17
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Yukari TOMISAKI , Ryoji KOJIMA , Tsuyoshi TSUCHIDA , Ayaka KITAOU
Abstract: Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of −20° C. to 80° C. and satisfying the following formula (I): (Tip clearance d of kneading machine)3≤(Volume V of polymer ready for introduction into kneading machine)≤2.0×104 cm3 (I).
-
公开(公告)号：US20230125591A1
公开(公告)日：2023-04-27
申请号：US17760432
申请日：2021-02-16
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Tsuyoshi TSUCHIDA
Abstract: To provide a narrow and large-diameter tire capable of improving noise performance at high speeds without compromising handling performance at low temperatures.
The tire has a tread portion formed of an elastomer composition. A relationship between a tire outer diameter (Dt) and a tire cross-sectional width (Wt) satisfy a following expression (1). The tread portion includes at least one circumferential groove extending in a tire circumferential direction. A rubber thickness at a groove bottom of the circumferential groove is 0.05 to 0.25 times a maximum thickness of the tread portion. The elastomer composition has a phase difference δ of 5.0×10−2π [rad] or less between a maximum value of strain and a maximum value of stress when repeatedly deformed at a temperature of 30 degrees Celsius and a frequency of 10 Hz in a dynamic viscoelasticity test; 1963.4≤(Dt2×π/4)/Wt≤2827.4 (1).-
公开(公告)号：US20160263942A1
公开(公告)日：2016-09-15
申请号：US15031389
申请日：2014-10-21
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Tsuyoshi TSUCHIDA , Tatsuya MIYAZAKI
CPC classification number: B60C1/0016 , B60C1/00 , B60C11/0008 , C08F36/06 , C08K3/04 , C08K5/09 , C08L9/00 , C08L45/02 , C08L91/00
Abstract: Provided is a pneumatic tire including a tread formed from a predetermined rubber composition to achieve greatly improved abrasion resistance while maintaining good wet-grip performance and good durability. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing predetermined amounts of a specific oil-extended polybutadiene rubber, of an isoprene-based diene rubber and/or a styrene-butadiene rubber, of a specific carbon black, and of stearic acid, the oil-extended polybutadiene rubber being synthesized using a rare earth catalyst, the rubber composition having an amount of process oil of a predetermined value or less.
Abstract translation: 提供一种充气轮胎，其包括由预定的橡胶组合物形成的胎面，以在保持良好的湿抓地性能和良好的耐久性的同时实现大大改善的耐磨性。 本发明涉及一种充气轮胎，其包括由橡胶组合物形成的胎面，所述橡胶组合物含有预定量的特定的油性聚丁二烯橡胶，异戊二烯系二烯橡胶和/或苯乙烯 - 丁二烯橡胶， 特定炭黑和硬脂酸，使用稀土催化剂合成的油分散聚丁二烯橡胶，该橡胶组合物具有预定值或更低的加工油量。
-
Patent Agency Ranking
公开(公告)号：US20210002460A1
公开(公告)日：2021-01-07
申请号：US16767818
申请日：2018-11-21
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Ryoji KOJIMA , Tsuyoshi TSUCHIDA , Yukari TOMISAKI
IPC: C08L9/06
Abstract: A pneumatic tire comprising a tread composed of a rubber composition, the rubber composition containing 30 to 120 parts by mass of silica having a BET specific surface area of 180 to 280 m2/g based on 100 parts by mass of a rubber component, wherein, under a normal state with no load where the pneumatic tire is mounted with a normal rim and filled with a normal internal pressure, a grounding surface shape in which a normal load is applied and the tread is pressed against a plane surface satisfies the following equation (1): 0.95≤SL0/SL80≤1.6 (wherein, SL0 is a ground contact length in a circumferential direction of the tire on a tire equator, and SL80 is a ground contact length in a circumferential direction of the tire on a position away from the tire equator by a distance in a tire axial direction of 80% of a tread grounding half width.)
-
公开(公告)号：US20180118896A1
公开(公告)日：2018-05-03
申请号：US15784930
申请日：2017-10-16
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Yukari TOMISAKI , Ryoji KOJIMA , Tsuyoshi TSUCHIDA , Ayaka KITAOU
CPC classification number: C08J3/203 , B29B7/005 , B29B7/183 , B29B7/56 , B29B7/7461 , B29B7/7495 , C08J2309/00 , C08L9/00
Abstract: Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of −20° C. to 80° C. and satisfying the following formula (I): (Tip clearance d of kneading machine)3≤(Volume V of polymer ready for introduction into kneading machine)≤2.0×104 cm3 (I).
-
公开(公告)号：US20180112065A1
公开(公告)日：2018-04-26
申请号：US15711353
申请日：2017-09-21
Inventor： Ryuichi TOKIMUNE , Tsuyoshi TSUCHIDA , Ryota KITAGO , Soh ISHINO , Hiroyuki KISHIMOTO , Munenao HIROKAMI , Tetsuro YAMADA
IPC: C08K5/548 , C08K5/5419 , C08L9/00
Abstract: Provided are a rubber composition for tires which achieves both abrasion resistance and processability while maintaining fuel economy, and a pneumatic tire including the rubber composition. A rubber composition for tires, containing an organosilicon compound represented by the average compositional formula (I) below having a ratio of the number of sulfur atoms to the number of silicon atoms of 1.0 to 1.5, wherein x represents the average number of sulfur atoms; m represents an integer of 6 to 12; and R1 to R6 are the same or different and each represent a C1-C6 alkyl or alkoxy group, at least one of R1 to R3 and at least one of R4 to R6 are the alkoxy groups, and two or more of the alkyl or alkoxy groups for R1 to R6 may be joined to form a ring.
-
公开(公告)号：US20170233545A1
公开(公告)日：2017-08-17
申请号：US15503133
申请日：2015-07-10
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Tsuyoshi TSUCHIDA
Abstract: The present invention provides a pneumatic tire having improved rubber tensile strength, fuel economy, and handling stability. The present invention relates to a pneumatic tire formed from a rubber composition, the rubber composition containing: a hydrogenated copolymer obtained by copolymerization of an aromatic vinyl compound and a conjugated diene compound, the hydrogenated copolymer having a degree of hydrogenation of the conjugated diene units of 75 mol % or more; and carbon black, the rubber composition containing, per 100% by mass of the rubber component, 75% by mass or more of the hydrogenated copolymer, the rubber composition containing, relative to 100 parts by mass of the rubber component, 30 to 80 parts by mass of the carbon black.
-
公开(公告)号：US20160200901A1
公开(公告)日：2016-07-14
申请号：US14913225
申请日：2014-08-18
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Tsuyoshi TSUCHIDA , Tatsuya MIYAZAKI , Soh ISHINO
IPC: C08L9/06
CPC classification number: B60C1/00 , B60C1/0016 , C08K3/04 , C08K3/06 , C08K3/36 , C08K2201/006 , C08L9/00 , C08L9/06
Abstract: Provided is a pneumatic tire including a tread formed from a specified rubber composition, thereby achieving a balanced improvement in fuel economy, wet-grip performance, and abrasion resistance while simultaneously having excellent durability. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing: an oil-extended BR having a cis content of 95 mol % or more, a vinyl content of 1 mol % or less, and a weight average molecular weight of 530,000 or more; a SBR having a bound styrene content of 30-50% by mass and a weight average molecular weight of 700,000 or more; silica; and carbon black, the oil-extended BR being synthesized using a rare earth catalyst, the rubber composition containing, based on 100% by mass of rubber solids, 10-67% by mass of the BR component contained in the oil-extended BR and 10-50% by mass of the SBR.
Abstract translation: 提供一种充气轮胎，其包括由特定橡胶组合物形成的胎面，从而在同时具有优异的耐久性的同时实现燃料经济性，湿抓地性能和耐磨性的均衡提高。 本发明涉及一种充气轮胎，其包括由橡胶组合物形成的胎面，所述橡胶组合物含有：顺式含量为95摩尔％以上，乙烯基含量为1摩尔％以下的扩油BR， 重均分子量为530,000以上; 苯乙烯含量为30-50质量％，重均分子量为70万以上的SBR; 二氧化硅 和炭黑，使用稀土催化剂合成油扩展的BR，该橡胶组合物基于100质量％的橡胶固体含有10-67质量％的含油BR中所含的BR成分， 10〜50质量％的SBR。
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.015 seconds)
