WO2017119254A1 - Composition de caoutchouc, composition de caoutchouc pour chenilles, caoutchouc pour sculpture et chenille en caoutchouc - Google Patents

Composition de caoutchouc, composition de caoutchouc pour chenilles, caoutchouc pour sculpture et chenille en caoutchouc Download PDF

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Publication number
WO2017119254A1
WO2017119254A1 PCT/JP2016/087296 JP2016087296W WO2017119254A1 WO 2017119254 A1 WO2017119254 A1 WO 2017119254A1 JP 2016087296 W JP2016087296 W JP 2016087296W WO 2017119254 A1 WO2017119254 A1 WO 2017119254A1
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WIPO (PCT)
Prior art keywords
rubber
mass
parts
recycled
rubber composition
Prior art date
Application number
PCT/JP2016/087296
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English (en)
Japanese (ja)
Inventor
祥一 谷本
Original Assignee
株式会社ブリヂストン
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Application filed by 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Priority to CN201680077816.1A priority Critical patent/CN108473725A/zh
Publication of WO2017119254A1 publication Critical patent/WO2017119254A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/18—Tracks
    • B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/18—Tracks
    • B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
    • B62D55/253—Tracks of continuously flexible type, e.g. rubber belts having elements interconnected by one or more cables or like elements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L17/00—Compositions of reclaimed rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof

Definitions

  • the present invention relates to a rubber composition, a rubber composition for a crawler, a lug rubber, and a rubber crawler.
  • the rubber composition is subjected to a fine particle size treatment, and a powder rubber substantially containing only that passed through a 200-mesh sieve, Furthermore, the recycled rubber obtained by processing by an oil pan method is contained (for example, refer patent document 1).
  • a rubber composition for tires with recycled rubber in which the decrease in tensile strength and wear resistance is made as small as possible, in particular, a rubber composition for tires with recycled rubber suitable for tire treads is recycled. It is disclosed that carbon black and an oil component in the case where 10 to 50 parts by weight of recycled rubber is blended with 100 parts by weight of a diene rubber excluding rubber are blended in a blending amount obtained by a specific formula (for example, , See Patent Document 2).
  • the recycled rubber obtained from waste rubber has various performances required as rubber compared to the new rubber
  • the rubber composition obtained by mixing the recycled rubber and the new rubber is made of recycled rubber.
  • the blending amount increased, the performance easily decreased. Therefore, in order to mix recycled rubber without impairing the characteristics required for rubber products (for example, tires), the amount of recycled rubber must be reduced.
  • Patent Document 1 less than 50% by mass of new rubber
  • Patent Document 2 the recycled rubber can be used only at most up to 50% by mass of the new rubber.
  • a construction machine such as a bull tozer
  • a rubber crawler that constitutes a running part such as a bull tozer is required to have higher tensile strength, wear resistance, and the like than a tire.
  • the present invention provides a rubber composition and a rubber composition for a crawler that are excellent in tensile strength and excellent in wear resistance even when a larger amount of recycled rubber is blended than before, and excellent in tensile strength and resistance.
  • An object of the present invention is to provide a lug rubber and a rubber crawler excellent in wearability.
  • zinc oxide Carbon black in a range of (50 to 60 parts by mass with respect to 100 parts by mass of the raw rubber component) + ⁇ (recycled rubber compounding amount [parts by mass] / 200) ⁇ (10.0 to 20.0 parts by mass) ⁇ , Is a rubber composition formed by blending ⁇ 2> The rubber according to ⁇ 2
  • the diene rubber is at least one selected from the group consisting of natural rubber, isoprene rubber, and styrene butadiene rubber.
  • the raw rubber component includes 50% by mass or more of natural rubber with respect to the total mass of the raw rubber component.
  • ⁇ 5> A rubber composition for a crawler comprising the rubber composition according to any one of ⁇ 1> to ⁇ 4>.
  • ⁇ 6> A rug rubber obtained from the rubber composition for a crawler according to ⁇ 5>.
  • ⁇ 7> A rubber crawler obtained from the rubber composition for a crawler according to ⁇ 5>.
  • ⁇ 8> A rubber crawler provided with the lug rubber described in ⁇ 6>.
  • a rubber composition and a rubber composition for a crawler that are excellent in tensile strength and excellent in wear resistance, and excellent in tensile strength,
  • a lug rubber and a rubber crawler excellent in wear resistance can be provided.
  • the rubber composition of the present invention comprises 100 parts by mass of an unvulcanized raw rubber component mainly composed of a diene rubber, 100 parts by mass or more and 500 parts by mass or less of a recycled rubber with respect to 100 parts by mass of the raw rubber component, (1.5 to 2.5 parts by mass with respect to 100 parts by mass of raw rubber component) + ⁇ (recycled rubber compounding amount [parts by mass] / 200) ⁇ (1.0 to 3.0 parts by mass) ⁇ Vulcanizing agent and (1.0 to 3.0 parts by mass with respect to 100 parts by mass of the raw rubber component) + ⁇ (blended amount of recycled rubber [parts by mass] / 200) ⁇ (1.0 to 4.0 masses) Parts) ⁇ and zinc oxide in the range of (50 to 60 parts by mass with respect to 100 parts by mass of the raw rubber component) + ⁇ (recycled rubber compounding amount [parts by mass] / 200) ⁇ (10.0 to 20.0) Carbon black in a range of (parts by mass) ⁇ .
  • the rubber composition of the present invention may further contain additives such as process oil and anti-aging agent.
  • additives such as process oil and anti-aging agent.
  • the conventional rubber composition containing the unvulcanized raw rubber component which is a new rubber, and recycled rubber tends to decrease the performance of the resulting rubber as the amount of recycled rubber increases. is there. This is because even if the unvulcanized raw rubber component and the vulcanized recycled rubber are kneaded and vulcanized together with a vulcanizing agent etc., the raw rubber component and the recycled rubber are not easily integrated. Since it is easy to separate, it is considered that performance such as tensile strength of rubber obtained from the rubber composition is lowered. In the vulcanization reaction of the rubber composition, the recycled rubber easily absorbs the vulcanizing agent, and the vulcanization reaction of the recycled rubber proceeds more easily than the raw rubber component.
  • the rubber derived from the recycled rubber and the rubber derived from the raw rubber component are mixed together and the resulting rubber has improved tensile strength and excellent wear resistance.
  • the structure of the rubber composition of this invention is demonstrated in detail.
  • the raw rubber component is an unvulcanized rubber component mainly composed of a diene rubber. Since rubbers that can be obtained as recycled rubber are generally made from waste tires, they are mainly composed of a diene system from the viewpoint of miscibility with recycled rubber.
  • the main component means a component that occupies 70% by mass or more with respect to the total mass of the raw rubber component, and the raw rubber component is a non-diene-based material up to 30% by mass or less with respect to the total mass of the raw rubber component. It may contain rubber.
  • Diene rubbers include natural rubber (NR), isoprene rubber (IR), (high cis) butadiene rubber [(high cis) BR], styrene butadiene rubber (SBR), ethylene-propylene rubber (EPR), and ethylene-propylene-diene rubber. (EPDM), butyl rubber (IIR), halogenated butyl rubber, chloroprene rubber, or a mixture thereof (for example, a mixture of natural rubber and styrene butadiene rubber).
  • Non-diene rubbers include butyl rubber, ethylene propylene rubber, urethane rubber, silicone rubber, acrylic rubber and the like.
  • the raw rubber component preferably contains 80% by mass or more of diene rubber, more preferably 90% by mass or more, and still more preferably 95% by mass or more. Furthermore, it is preferable that the content of natural rubber is 50% by mass or more based on the total mass of the diene rubber.
  • Recycled rubber Commercially available recycled rubber can be used as the recycled rubber used in the present invention.
  • Recycled rubber is a regenerated rubber used for automobile tires, tubes and other rubber products as defined in JIS K6313-2012, and has the same properties as this. Note that powders are excluded. Further, it is a recycled rubber that has been subjected to desulfurization treatment.
  • the type of recycled rubber may be any one selected from tube recycled rubber, tire recycled rubber, and other recycled rubber, and a plurality of types may be combined. Among these, tire recycled rubber is preferable. It is more preferable that the recycled rubber is mainly composed of a diene rubber (50% by mass or more in the rubber component of the recycled rubber). It does not specifically limit as a manufacturing method of a recycled rubber, What is necessary is just to employ
  • the recycled rubber is blended in the rubber composition in a range of 100 parts by mass or more and 500 parts by mass or less with respect to 100 parts by mass of the raw rubber component.
  • the amount of the recycled rubber is less than 100 parts by mass with respect to 100 parts by mass of the raw rubber component, the physical properties of the resulting rubber are difficult to deteriorate and various functions are easily maintained, but the recycled amount of the recycled rubber is insufficient. Yes, a larger amount of recycled rubber is not used than before.
  • the amount of the recycled rubber exceeds 500 parts by mass with respect to 100 parts by mass of the raw rubber component, the physical properties of the rubber are lowered and the various functions of the rubber cannot be maintained.
  • the amount of recycled rubber is preferably 200 parts by mass or more, more preferably 300 parts by mass or more, and 400 parts by mass with respect to 100 parts by mass of the raw rubber component. More preferably, it is more than part.
  • the vulcanizing agent is added to the rubber composition of the present invention in a basic compounding amount of 1.5 to 2.5 parts by mass with respect to 100 parts by mass of the raw rubber component, and ⁇ (recycled rubber compounding amount [parts by mass]]. /200) ⁇ (1.0 to 3.0 parts by mass) ⁇ .
  • the basic compounding amount of the vulcanizing agent is preferably 1.7 to 2.3 parts by mass from the viewpoint of sufficiently vulcanizing the raw rubber component.
  • the added amount of the vulcanizing agent is preferably 1.2 to 3.0 parts by mass from the viewpoint of improving the wear resistance.
  • the vulcanizing agent is not particularly limited as long as it is sulfur or a compound containing sulfur.
  • Zinc oxide is added to the rubber composition of the present invention in the basis of 1.0 to 3.0 parts by mass with respect to 100 parts by mass of the raw rubber component, and ⁇ (recycled rubber compounding amount [parts by mass] / 200) ⁇ (1.0 to 4.0 parts by mass) ⁇ .
  • the basic compounding amount of zinc oxide is preferably 2.0 to 3.0 parts by mass from the viewpoint of sufficiently vulcanizing the raw rubber component. From the viewpoint of efficiently vulcanizing the raw rubber component and reducing the difference between the vulcanizing agent absorption amount of the recycled rubber and the vulcanizing agent absorption amount of the raw rubber component, 1.
  • the amount is preferably 2 to 4.0 parts by mass.
  • the vulcanization accelerator is added to the rubber composition of the present invention in a basic compounding amount of 0.4 to 1.0 part by mass with respect to 100 parts by mass of the raw rubber component. ] / 200) ⁇ (0.1 to 1.0 part by mass) ⁇ is preferably added.
  • the basic compounding amount of the vulcanization accelerator is preferably 0.4 to 0.8 parts by mass with respect to 100 parts by mass of the raw rubber component, and the additional compounding amount is ( The amount of recycled rubber [parts by mass] / 200) ⁇ (0.4 to 0.9 parts by mass) ⁇ is preferred.
  • the vulcanization accelerator is not particularly limited.
  • M (2-mercaptobenzothiazole), DM (dibenzothiazyl disulfide), CZ (N-cyclohexyl-2-benzothiazylsulfenamide), etc.
  • guanidine vulcanization accelerators such as DPG (diphenylguanidine).
  • Carbon black is added to the rubber composition of the present invention in addition to the basic compounding amount of 50 to 60 parts by mass with respect to 100 parts by mass of the raw rubber component, ⁇ (recycled rubber compounding amount [parts by mass] / 200) ⁇ ( (10.0 to 20.0 parts by mass) ⁇ .
  • the basic compounding amount of carbon black is 55 to 50% from the viewpoint of efficiently vulcanizing the raw rubber component and reducing the difference between the vulcanizing agent absorption amount of the recycled rubber and the vulcanizing agent absorption amount of the raw rubber component.
  • the amount is preferably 60 parts by mass.
  • the additional amount of carbon black is preferably 12.0 to 20.0 parts by mass from the viewpoint of the breaking strength of the vulcanized rubber.
  • the amount is preferably 10.0 to 18.0 parts by mass.
  • carbon black include standard varieties such as SAF, ISAF, HAF, FEF, GPF, SRF (furnace for rubber) and MT carbon black (pyrolytic carbon).
  • the process oil is further added to the rubber composition of the present invention in the range of ⁇ (recycled rubber compounding amount [parts by mass] / 200) ⁇ (exceeding 0 parts by mass and 20.0 parts by mass or less) ⁇ . Also good.
  • the additional amount of the process oil is preferably 5.0 to 15.0 parts by mass from the viewpoint of suppressing rubber plasticization while improving workability during kneading of the rubber composition.
  • Examples of the process oil include paraffinic, naphthenic, and aromatic process oils.
  • the rubber composition of the present invention may further contain other additives as long as the object of the present invention is not impaired.
  • additives are not particularly limited as long as they are usually contained in rubber.
  • fatty acids such as stearic acid; resins; anti-aging agents; waxes; vulcanization retarders (scorching inhibitors); Silica coupling agent; peptizer; ozone cracking inhibitor; antioxidant; clay; calcium carbonate.
  • a commercial item can be used for these.
  • the amount of the additive added can be appropriately selected by those skilled in the art as long as the object of the present invention is not impaired.
  • the blending amount is preferably 0.1 to 5 parts by mass, more preferably 0.5 to 3 parts by mass with respect to 100 parts by mass of the raw rubber component.
  • the resin examples include polyester polyol resin, dicyclopentadiene resin, rosin resin, phenol resin, xylene resin, aliphatic / alicyclic C5 petroleum resin, C5 / C9 petroleum resin, C9 petroleum resin, terpene resin, and these Examples include copolymers and modified products.
  • the amount of the resin is preferably 0.5 to 20 parts by mass, and more preferably 1 to 10 parts by mass with respect to 100 parts by mass of the raw rubber component.
  • a known anti-aging agent can be selected and used.
  • 2,2,4-trimethyl -1,2-dihydroquinoline polymer (RD) and the like.
  • its blending amount is preferably 0.5 to 10 parts by mass with respect to 100 parts by mass of the raw rubber component.
  • the blending amount is preferably 0.5 to 10 parts by mass, more preferably 1 to 5 parts by mass with respect to 100 parts by mass of the raw rubber component.
  • the rubber composition of the present invention can be obtained by kneading the aforementioned components.
  • the kneading method may be in accordance with a method usually carried out by those skilled in the art.
  • all components other than sulfur, a vulcanization accelerator, and zinc oxide when a vulcanization retarder is used, a vulcanization retarder is further included).
  • the rubber composition of the present invention is suitable for a rubber composition for crawlers because a rubber obtained by vulcanization is excellent in tensile strength and wear resistance.
  • a rubber obtained by vulcanization is excellent in tensile strength and wear resistance.
  • By molding the rubber composition of the present invention or the rubber composition for a crawler with a heating mold it is possible to obtain a rubber having excellent tensile strength and wear resistance.
  • By changing the heating mold a desired rubber crawler and A rubber crawler lug rubber can be obtained.
  • Examples 1 to 11 and Comparative Examples 1 to 6> In the composition shown in Table 1 and Table 2 (unit: parts by mass), each component excluding sulfur and vulcanization accelerator is kneaded at 150 ° C. with a Banbury mixer, and then sulfur and vulcanization accelerator are added and kneaded. Thus, a rubber composition was obtained, and the rubber composition was molded at a mold temperature of 150 ° C. to obtain a rubber crawler. The workability of the obtained rubber composition and the tensile strength and wear resistance of the rubber crawler were measured as follows, and the results are shown in Tables 1 and 2. The tensile strength and wear resistance of the rubber crawler were evaluated using a test piece obtained by molding the rubber composition at a mold temperature of 150 ° C., which is the same as the rubber crawler production conditions.
  • Tb Tensile strength (Tb, Trouser tear)]
  • Tb The obtained test piece was cut into the shape of a dumbbell-shaped No. 3 dumbbell-shaped test piece (JIS K6299 (2012)).
  • the obtained dumbbell-shaped test piece was required to be pulled and broken at 25 ° C. at a specified speed (500 ⁇ 25 mm / min) using a tensile test device in accordance with JIS K6251 (2010).
  • the maximum tensile force was taken as the tensile strength at break (Tb).
  • the tensile breaking strength of Comparative Example 2 is shown as an index with 100%. A larger index value indicates a higher tensile rupture strength.
  • the allowable index value is 120% or more, preferably 130% or more.
  • Anti-aging agent 6C "ANTIGENE (registered trademark) 6C "(trade name), manufactured by Sumitomo Chemical Co., Ltd. 9) Oil:” Kou Molex (registered trademark) NH-60T “(trade name), Nippon Oil Corporation 10) Ordinary sulfur (vulcanizing agent) Sulfax5 (trade name), manufactured by Tsurumi Chemical Co., Ltd. 11) Vulcanization accelerator DPG: “Noxeller (registered trademark) D” (trade name), 1,3-diphenylguanidine, manufactured by Ouchi Shinsei Chemical Co., Ltd.
  • Vulcanization accelerator CZ “Noxeller (registered trademark) CZ-G” (trade name), N-cyclohexyl-2-benzothiazolylsulfenamide, manufactured by Ouchi Shinsei Chemical Co., Ltd. 13)
  • Zinc oxide (Registered trademark) SR ”(trade name), manufactured by Toho Zinc Co., Ltd. 14)
  • Vulcanization retarder PVI manufactured by Monsanto, Santguard PVI (N-cyclohexylthiophthalimide)
  • the rubber composition of the present invention can be used for rubber crawlers and rubber crawler lug rubber applications.
  • Such a rubber crawler or a rubber crawler provided with a lug rubber can be used for agricultural machinery, construction machinery, or civil engineering machinery.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne une composition de caoutchouc qui est obtenue en mélangeant : 100 parties en masse de composant de caoutchouc non vulcanisé de départ se composant principalement d'un caoutchouc diénique; de 100 parties en masse à 500 parties en masse (incluses) de caoutchouc régénéré pour 100 parties en masse du composant de caoutchouc de départ; et un agent de vulcanisation dans la plage de (quantité de mélange de caoutchouc régénéré (parties en masse)/200) × (1,0 à 3,0 parties en masse), de l'oxyde de zinc dans la plage de (quantité de mélange de caoutchouc régénéré (parties en masse)/200) × (1,0 à 4,0 parties en masse) et du noir de carbone dans la plage de (quantité de mélange de caoutchouc régénéré (parties en masse)/200) × (10,0 à 20,0 parties en masse), respectivement par rapport à un mélange de base spécifique. Cette composition de caoutchouc permet d'obtenir un caoutchouc possédant une excellente résistance à l'usure et une excellente résistance à la traction par rapport aux compositions de caoutchouc classiques, même lorsqu'elle est mélangée à une grande quantité de caoutchouc régénéré.
PCT/JP2016/087296 2016-01-07 2016-12-14 Composition de caoutchouc, composition de caoutchouc pour chenilles, caoutchouc pour sculpture et chenille en caoutchouc WO2017119254A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680077816.1A CN108473725A (zh) 2016-01-07 2016-12-14 橡胶组合物、履带用橡胶组合物、花纹块部橡胶和橡胶履带

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JP2016001992A JP2017122182A (ja) 2016-01-07 2016-01-07 ゴム組成物、クローラ用ゴム組成物、ラグ部ゴム、及びゴムクローラ
JP2016-001992 2016-01-07

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CN108945131A (zh) * 2018-09-11 2018-12-07 浙江元创橡胶履带有限公司 高速橡胶履带和高速橡胶履带花纹侧橡胶

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JPH1053171A (ja) * 1996-08-07 1998-02-24 Bridgestone Corp ゴムクロ−ラ
JPH11139359A (ja) * 1997-11-04 1999-05-25 Bridgestone Corp ゴムクロ−ラ
JP2002265680A (ja) * 2001-03-15 2002-09-18 Ube Ind Ltd 高硬度配合ゴム組成物
JP2002265685A (ja) * 2001-03-14 2002-09-18 Ube Ind Ltd 乗用車タイヤ用ゴム組成物
JP2008056028A (ja) * 2006-08-30 2008-03-13 Bridgestone Corp ゴムクローラ用ゴム組成物及びゴムクローラ
WO2009093695A1 (fr) * 2008-01-23 2009-07-30 Ube Industries, Ltd. Composition de caoutchouc, composition de caoutchouc pour bande de roulement de base, composition de caoutchouc pour toile en caoutchouc, composition de caoutchouc pour flanc de pneu et pneu utilisant les compositions de caoutchouc
JP2010065138A (ja) * 2008-09-10 2010-03-25 Yokohama Rubber Co Ltd:The タイヤトレッド用ゴム組成物

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CN101492549B (zh) * 2008-01-21 2012-01-11 赛轮股份有限公司 轮胎垫带胶料
CN102775651B (zh) * 2012-08-16 2014-06-11 中橡集团曙光橡胶工业研究设计院 一种含丁基再生胶的海绵轮胎海绵胶料
CN102838785B (zh) * 2012-08-23 2014-01-15 浙江迪马橡胶有限公司 轮胎及其制造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1053171A (ja) * 1996-08-07 1998-02-24 Bridgestone Corp ゴムクロ−ラ
JPH11139359A (ja) * 1997-11-04 1999-05-25 Bridgestone Corp ゴムクロ−ラ
JP2002265685A (ja) * 2001-03-14 2002-09-18 Ube Ind Ltd 乗用車タイヤ用ゴム組成物
JP2002265680A (ja) * 2001-03-15 2002-09-18 Ube Ind Ltd 高硬度配合ゴム組成物
JP2008056028A (ja) * 2006-08-30 2008-03-13 Bridgestone Corp ゴムクローラ用ゴム組成物及びゴムクローラ
WO2009093695A1 (fr) * 2008-01-23 2009-07-30 Ube Industries, Ltd. Composition de caoutchouc, composition de caoutchouc pour bande de roulement de base, composition de caoutchouc pour toile en caoutchouc, composition de caoutchouc pour flanc de pneu et pneu utilisant les compositions de caoutchouc
JP2010065138A (ja) * 2008-09-10 2010-03-25 Yokohama Rubber Co Ltd:The タイヤトレッド用ゴム組成物

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