WO1993019578A2 - Tire tread rubber composition - Google Patents
Tire tread rubber composition Download PDFInfo
- Publication number
- WO1993019578A2 WO1993019578A2 PCT/JP1993/000971 JP9300971W WO9319578A2 WO 1993019578 A2 WO1993019578 A2 WO 1993019578A2 JP 9300971 W JP9300971 W JP 9300971W WO 9319578 A2 WO9319578 A2 WO 9319578A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- weight
- carbon
- parts
- rubber composition
- Prior art date
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
Definitions
- the present invention relates to a rubber composition for a tire tread, and particularly to a rubber composition for a tire tread excellent in abrasion resistance and suitable for a heavy-duty pneumatic tire.
- the carbon black used as a filler in the rubber composition for treads of heavy-duty tires has also changed from ISAF class to SAF class.
- the particle size obtained by this method is an average value and has a certain distribution in practice.
- the surface area of carbon black can be determined and the particle size can be calculated using this.
- the N 2 S.A method and the iodine adsorption method (IA method) which are based on the amount of nitrogen gas adsorbed, are simple and easy to manufacture. It is routinely used for quality control of users and acceptance inspection of users.
- One thing to keep in mind when measuring surface area is whether the value obtained by the measurement source indicates the total surface area or the external surface area.
- the surface of carbon black has small pores.
- the total surface area includes the surface area in the pores, and the external surface area excludes the surface area in the pores. Things.
- macromolecules such as rubber cannot enter the pores, and the surface in the pores cannot be effectively used as a practical matter.
- the external surface area of carbon black is sometimes called the rubber effective surface area.
- the surface area determined from the amount of adsorption of cetyltriammonium bromide (CTAB), which has a large molecule, is used. This is called the CTAB method surface area.
- CTAB surface area is expressed in m 2 Zg and measured according to A STMD 3765-89.
- structure one On the other hand, it is known by electron microscope that carbon black particles do not exist alone but are connected in a grape-like manner. This is called structure one. There are two types of this structure, one based on fusion of particles, that is, chemical bonding, and the other based on physical bonding such as mere van der Waals force. The structure, the latter deformation and destructive structure, is called the secondary structure. Structure 1 is generally measured by the oil absorption of dibutyl phthalate (DBP). This principle is based on the phenomenon that carbon entangled particles have a greater capacity to absorb more oil.
- DBP dibutyl phthalate
- 24M4DBP oil absorption is 4 fold pressure at 24,000 psi pressure After compression, the DBP oil absorption was calculated, and the DBP oil absorption due to the deformed and destructive structural form (secondary structure) caused by the contracted van der Waals sword was excluded, and non-destructive ASTMD 34 is an index used to determine the DBP oil absorption based on the true structural structure of the primary structure (primary structure) and to evaluate the skeletal structural characteristics of the primary structure-based carbon black. It is a value measured according to 93.
- HISYS BRJ cis-1,4-polybutadiene rubber
- Methods to improve the molecular weight, the linearity of the polymer, the narrowing of the molecular weight distribution, etc. have been conventionally used, but these methods are also the same as in the case of carbon black atomization.
- Abrasion resistance has not been improved as much as expected because the dispersibility of carbon black is significantly reduced.
- the improvement in abrasion resistance is almost at its limit, and the uncured There is also a problem that the viscosity of the rubber becomes extremely high, and the workability is remarkably deteriorated.
- various softeners and plasticizers such as cottonseed have been used to improve the dispersibility of carbon black and increase the viscosity of rubber during unvulcanization.
- a softening agent and a plasticizer could improve the dispersibility and improve the decrease in viscosity, but the wear resistance was rather reduced.
- the present inventors have also studied diligently from this viewpoint, and have identified a specific unsaturated fatty acid, that is, a conjugated genic acid containing at least one pair of two carbon-carbon double bonds in a conjugate relationship in a molecule.
- a rubber composition with improved static mechanical strength by compounding an organic unsaturated fatty acid containing two or more carbon-carbon double bonds in the molecule containing not less than 2% by weight as a vulcanization accelerator. ing.
- Japanese Patent Application Laid-Open No. Hei 4-189850 Japanese Patent Application Laid-Open No. Hei 4-189850.
- An object of the present invention is to solve the above-mentioned conventional problems, and to provide a rubber composition for a tire tread, particularly, a rubber composition for a tire tread which has significantly improved abrasion resistance in a heavy-duty pneumatic tire.
- the present inventor has proposed an organic unsaturated oil containing a conjugated genic acid which was effective as a vulcanization accelerating aid for a rubber composition of an automobile tire itself in improving static fracture characteristics. Focusing on whether fatty acids may be effective in increasing the aggressiveness and increasing the viscosity of carbon black, which is a problem in improving abrasion resistance, as a result of intensive studies, the combination of natural rubber and gen-based synthetic rubber. In addition, when a specific carbon black is limitedly used and an organic unsaturated fatty acid containing the above conjugated genic acid is combined, a rubber composition for a tire tread having more excellent abrasion resistance than before can be obtained. As a result of finding out and conducting further research, the present invention was completed.
- the rubber composition for a tire tread of the present invention comprises:
- Cetyl triammonium bromide adsorption specific surface area is 90-22 On ⁇ Zg, and 24M4DB P oil absorption is 90-140 ml per 100 parts by weight of natural rubber and / or gen-based synthetic rubber.
- / 100 g of carbon black having a characteristic value of 40 to 100 parts by weight Containing at least one pair of two carbon-carbon double bonds conjugated with each other In a molecule containing 10% by weight or more of conjugated genic acid It is composed of 0.1 to 20 parts by weight of an organic unsaturated fatty acid containing two or more carbon-carbon double bonds.
- CAB cetyltriammonium mouth adsorb, specific surface area (CTAB) of 120-22 On ⁇ Zg and 24 M4 DBPP oil absorption of 100-14 OmlZl 00 g It is preferable to use a black.
- the gen-based synthetic rubber is preferably at least one selected from polybutadiene rubber, styrene / butadiene copolymer rubber, synthetic polyisoprene rubber, chlorobrene rubber, butyl rubber, and ethylene / propylene turbomer rubber.
- the content of conjugated diacids in organic unsaturated fatty acids is more than 25% by weight Preferably, there is.
- the high cis BR preferably has the following characteristic value (a).
- the mixing ratio of the natural rubber and the high cis BR is preferably at least 70% by weight of the natural rubber.
- the rubber used in the present invention is basically a natural rubber and a Z or gen-based synthetic rubber.
- the gen-based synthetic rubber include polybutadiene rubber (BR), styrene / butadiene copolymer rubber (SBR), synthetic polysoprene rubber, chloroprene rubber (CR), butyl rubber (IIR), and ethylene propylene / gen terpolymer.
- BR polybutadiene rubber
- SBR styrene / butadiene copolymer rubber
- synthetic polysoprene rubber chloroprene rubber (CR), butyl rubber (IIR), and ethylene propylene / gen terpolymer.
- EPDM ethylene propylene / gen terpolymer
- high cis BR Of the gen-based synthetic rubbers, it is particularly preferable to use high cis BR.
- the ratio is 80 20 to 30 70, preferably 70 Z 30 to 40 Z 60. It is necessary that the mixture of natural rubber and Hicis BR is at least 70% by weight, preferably at least 80% by weight, more preferably at least 85% by weight. If the composition of the rubber when Hicis BR is used is not within the above range, the effect on abrasion resistance is not sufficient.
- the rubber components used in natural rubber and high-cis BR include the above SBR, BR, CR, IIR, EPDM in an amount not exceeding 30% by weight, preferably 20% by weight, and more preferably 15% by weight.
- Gen-based synthetic rubber At least one rubber of choice can be used.
- the high cis BR needs to have Mw of 400,000 or more and MwZMn of less than 4.0. If Mw is less than 400,000 and MwZMn exceeds 4.0, the abrasion resistance is undesirably reduced.
- Mw is 400,000 to 2,000,000, preferably 500,000 to 1.5,000,000, more preferably 500,000 to 1,000,000, and MwZMn is less than 4.0, preferably less than 3.5 It is desirable.
- the high cis BR satisfying the above-mentioned Mw and MwZMn is ML 1 +4 (100 ° C.), preferably 38 or more, more preferably 40 to 120. If ML 1 +4 (100 ° C) is less than 38, abrasion resistance is undesirably reduced.
- the cis content of the high cis BR is preferably at least 90%, more preferably at least 93%.
- the carbon black used in the present invention, C TAB method surface area of 90 to 220 m 2 Roh g, preferably, Ri range der of 120 to 22 On ⁇ Zg, and 24M4 DBP is 90 to: 140 ml Bruno 100 g, preferably Need to have a characteristic value of 100-135 ml / 100 g.
- CTAB of carbon black is in the range of 90 to 220 m 2 Zg and 24M4DBP is in the range of 90 to 140 ml and 100 g, the abrasion resistance effect of the present invention cannot be sufficiently exerted.
- the rubber composition of the present invention needs to contain carbon black having the above characteristic values in the range of 40 to 100 parts by weight, preferably 45 to 80 parts by weight, more preferably 48 to 70 parts by weight. is there. If the carbon black is less than 40 parts by weight or exceeds 100 parts by weight, the effect of the present invention, that is, the abrasion resistance, cannot be sufficiently exhibited.
- “conjugated carboxylic acid” C represents an organic unsaturated monocarboxylic acid containing at least one pair of two carbon-carbon double bonds in a conjugate relationship in the molecule. Preferably, one pair of carbon-carbon double bonds having a conjugate relationship is present, but two or more pairs may be present.
- organic unsaturated fatty acid containing two or more carbon-carbon double bonds in the molecule containing 1% by weight or more of conjugated diacid includes, of course, conjugated diacid, Other organic unsaturated fatty acids contain two or more carbon-carbon double bonds, except that they are not conjugated to each other.
- the content of the conjugated genic acid in the organic unsaturated fatty acid must be 10% by weight or more, preferably 25% by weight or more, more preferably 35% by weight or more.
- the effect of the present invention is obtained-the effect of abrasion resistance is not sufficiently exhibited. Further, when the content of the conjugated genic acid is 25% by weight or more, the effect on the abrasion resistance can be further exhibited.
- conjugated diacids examples include 2,4-pentadenoic acid, 2,4-hexadenoic acid, 2,4-decadienoic acid, 2,4-dodecadienoic acid, 9,11-year-old kutadecadienoic acid, and monoeriostearic acid , 9,11,13,15-octadecateratenoic acid and 9,11,13-year-old octadecatrienoic acid.
- Preferred examples of the organic unsaturated fatty acid containing a conjugated diacid include a dehydrated castor oil fatty acid obtained by a dehydration reaction of castor oil.
- the content of conjugated genic acid can be changed depending on the method of dehydration, and for example, 35% by weight and 60% by weight can be obtained.
- the conjugated genic acid is 9, 1 1—
- the main component is octadedecenoic acid, and the other organic unsaturated fatty acids mainly contain non-covalent octadedecadienoic acid, and also include linoleic acid and linoleic acid.
- conventionally used fatty acids such as stearic acid may be used in combination with the dehydrated castor oil fatty acid.
- the organic unsaturated fatty acid used in the present invention is preferably an unsaturated fatty acid having 10 to 22 carbon atoms, more preferably an unsaturated fatty acid having a long chain alkyl group having 12 to 20 carbon atoms, out of the total unsaturated fatty acids. Preferably, it is contained in an amount of at least% by weight. When the unsaturated fatty acid having 10 to 22 carbon atoms is used, the effect on the elastic modulus can be further exerted.
- the degree of unsaturation of the total unsaturated fatty acids is preferably from 130 to 180 in iodine value.
- the iodine value is in the range of 130 to 180, an effect on the elastic modulus can be further exhibited.
- the organic unsaturated fatty acid is contained in the range of 0.1 to 20 parts by weight, preferably 0.3 to 10 parts by weight, more preferably 0.5 to 4 parts by weight. It must be contained in the range of parts by weight. If the amount of the organic unsaturated fatty acid is less than 0.1 part by weight or more than 20 parts by weight, the effect of the abrasion resistance of the present invention is not sufficiently exhibited.
- the rubber composition for a tire tread according to the present invention may contain a softening agent in addition to the above-mentioned organic unsaturated fatty acids, and the mixing amount thereof may be 10 parts by weight or less, preferably 6 parts by weight or less. Can be.
- compounding agents usually used as rubber compounding agents for example, vulcanizing agents, vulcanizing accelerators, vulcanizing accelerators, anti-aging agents, foaming agents, etc. Can be blended.
- Sulfur and a vulcanization accelerator were added to the batch on an open roll to prepare a rubber composition.
- Tables 1 to 3 below show the results of the test for each rubber composition, ie, the results of measurement of wear resistance, workability, and carbon dispersibility.
- the blending agent other than sulfur and the vulcanization accelerator and the raw rubber are mixed with a Banbury type internal mixer. Sulfur and a vulcanization accelerator were added to the obtained masterbatch on an open mouth to prepare a rubber composition.
- Tables 4 to 8 below show the results of tests on each rubber composition and the like, that is, measurements of wear resistance, workability, and carbon dispersibility.
- Table 9 shows the characteristic values of the CTAB surface area and the 24 M 4 DBP oil absorption of the carbon blacks A to E used in Tables 1 to 8.
- Table 10 shows the characteristic values of ML 1 +4 (100 ° C.) of the high cis BR-A to C used in Tables 4 to 8.
- the tread is divided into two parts along the circumference of the tire separately from the tire for which the maneuverability and stability have been evaluated, and the tread is formed by using the tread rubber composition of Comparative Example 1.
- the formed tires were prototyped, and the amount of wear required after traveling 50,000 km on a paved road surface was determined, and the running distance required for lmm wear was relatively compared. A higher index indicates better wear resistance.
- Mooney viscosity was measured at ioo ° C using a Shimadzu Mu-221 viscometer.
- the test method was performed in accordance with JIS K6300, and ML 1 + 4 (Mooney viscosity value after 1 minute preheating and 4 minutes operation) was determined. The smaller the index, the better the workability.
- the degree of dispersion was measured with a microscope according to AS TMD 2663 B method. A larger index indicates better dispersibility.
- Example Example Example Comparative Example Example Comparative Example 1 2 1 3 2 Natural rubber 100.0 100.0 100.0 100.0 100.0 Force-Bomb bra 7 A 60.0 60.0 60.0 60.0 60.0 Stearinic acid 2.0 2.H 2.0 2.0 2.0 Zinc white 3.0 3.0 3.0 3.0 3.0
- Examples 1 to 3 are rubber compositions for tire treads each containing 100 parts by weight of natural rubber and 100% by weight of natural rubber and organic unsaturated fatty acids having characteristic values and compounding amounts within the range of the present invention. It was found that the workability was good and the dispersibility of carbon black was good because of excellent abrasion and low Mooney viscosity.
- Comparative Examples 1 to 14 are rubbers for tire treads in which carbon black having different characteristic values and compounding amounts and various organic unsaturated fatty acids are blended with 100 parts by weight of natural rubber. A composition.
- Comparative Example 1 is a case where the compounding amount of the organic unsaturated fatty acid of the present invention is out of the range of the present invention
- Comparative Examples 2 to 4 are cases where the organic unsaturated fatty acid of the present invention is not used.
- Comparative Examples 5 to 12 are cases in which the characteristic values of the CTAB surface area and 24 M4 DBP oil absorption of the carbon black of the present invention are out of the range of the present invention.
- Comparative Examples 13 and 14 The case where the compounding amount of the carbon black of the present invention is out of the range of the present invention.
- Examples 4 to 10 carbon black and organic unsaturated fatty acids having characteristic values and compounding amounts within the range of the present invention were added to 100 parts by weight of a mixed rubber consisting of natural rubber having various mixing ratios and high cis BR. It is a compounded rubber composition for tire treads. It has excellent abrasion resistance and low Mooney viscosity, so that it has good additivity and good dispersibility of carbon black.
- Comparative Example 1 5 to 36 are natural rubbers with various mixing ratios A rubber composition for tire treads comprising 100 parts by weight of a mixed rubber composed of styrene and high-cis BR, and carbon black having different characteristic values and different amounts, and various organic unsaturated fatty acids.
- Comparative Examples 15 to 18 are cases where the mixing ratio of the mixed rubber composed of natural rubber and high cis BR and the compounding amount of the organic unsaturated fatty acid of the present invention are out of the range of the present invention.
- 19 is the case where the mixing amount of the mixed rubber consisting of natural rubber and high cis BR is out of the range of the present invention.
- Comparative Examples 20 to 22 show that the characteristic value of the high cis BR of the present invention is Comparative Examples 23 to 26 are cases where the characteristic values of the CTAB surface area and the 24 M4 DBP oil absorption of the carbon black of the present invention are out of the range of the present invention.
- Comparative Examples 27 and 28 are cases where the compounding amount of the carbon black of the present invention is out of the range of the present invention.
- Comparative Examples 29 to 32 show that the organic unsaturated fatty acids of the present invention are within the range of the present invention.
- Comparative Examples 33 and 34 the compounding amount of the organic unsaturated fatty acid of the present invention was out of the range of the present invention.
- a case made of the ratio Comparative Examples 3 5, 3 6 are the case of mixing the outside of the organic unsaturated fatty acid of the organic unsaturated fatty acid and the invention of the present invention.
- the rubber composition for a tire tread according to the present invention has a low Mooney viscosity, so that the processability is good and the dispersibility of carbon black is also good.
- the rubber composition for a tire tread is particularly preferably used for a heavy-duty pneumatic tire having excellent abrasion resistance.
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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)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93916158A EP0661343B1 (en) | 1993-07-14 | 1993-07-14 | Tire tread rubber composition |
ES93916158T ES2111759T3 (es) | 1993-07-14 | 1993-07-14 | Composicion de caucho para banda de rodadura de neumatico. |
DE69315587T DE69315587T2 (de) | 1993-07-14 | 1993-07-14 | Kautschukmischung für laufflächen |
US08/403,720 US5587417A (en) | 1993-07-14 | 1993-07-14 | Rubber composition for tire tread |
PCT/JP1993/000971 WO1993019578A2 (en) | 1993-07-14 | 1993-07-14 | Tire tread rubber composition |
JP51731193A JP3200067B2 (ja) | 1993-07-14 | 1993-07-14 | タイヤトレッド用ゴム組成物 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1993/000971 WO1993019578A2 (en) | 1993-07-14 | 1993-07-14 | Tire tread rubber composition |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1993019578A2 true WO1993019578A2 (en) | 1993-10-14 |
WO1993019578A3 WO1993019578A3 (fr) | 1993-11-25 |
Family
ID=14070390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/000971 WO1993019578A2 (en) | 1993-07-14 | 1993-07-14 | Tire tread rubber composition |
Country Status (6)
Country | Link |
---|---|
US (1) | US5587417A (ja) |
EP (1) | EP0661343B1 (ja) |
JP (1) | JP3200067B2 (ja) |
DE (1) | DE69315587T2 (ja) |
ES (1) | ES2111759T3 (ja) |
WO (1) | WO1993019578A2 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005133017A (ja) * | 2003-10-31 | 2005-05-26 | Yokohama Rubber Co Ltd:The | サイドウォール用ゴム組成物 |
JP2005344063A (ja) * | 2004-06-04 | 2005-12-15 | Toyo Tire & Rubber Co Ltd | 重荷重用タイヤトレッドゴム組成物 |
US7432318B2 (en) | 2004-01-30 | 2008-10-07 | Sumitomo Rubber Industries, Ltd. | Rubber composition for a tire and pneumatic tire using the same |
WO2010143633A1 (ja) * | 2009-06-10 | 2010-12-16 | 株式会社ブリヂストン | ゴム組成物及びそれを用いたタイヤ |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6448318B1 (en) * | 2000-03-10 | 2002-09-10 | The Goodyear Tire & Rubber Company | Method of processing rubber compositions containing soya fatty acids, sunflower fatty acids and mixtures thereof |
JP3830341B2 (ja) * | 2000-05-30 | 2006-10-04 | Nok株式会社 | ブチルゴム組成物 |
US7029544B2 (en) * | 2000-09-15 | 2006-04-18 | Bridgestone Firestone North American Tire, Llc | Conductive pathways in tire treads for reduced static charge buildup |
US20020111403A1 (en) | 2000-12-15 | 2002-08-15 | Gosens Johannes Cornelis | Flame retardant polyester compositions |
US20030004262A1 (en) * | 2001-05-04 | 2003-01-02 | Drvol Charles Edward | Tire with tread of rubber composition containing carbon black with silicon domains on its surface |
US7148285B2 (en) | 2001-05-11 | 2006-12-12 | Cabot Corporation | Coated carbon black pellets and methods of making same |
US20040013599A1 (en) * | 2002-07-19 | 2004-01-22 | Sandeep Bhatt | Carbon blacks and uses thereof |
JP4775257B2 (ja) * | 2004-03-15 | 2011-09-21 | 三菱化学株式会社 | プロピレン系樹脂組成物、及びその成形体 |
JP2007106799A (ja) * | 2005-10-11 | 2007-04-26 | Sumitomo Rubber Ind Ltd | タイヤ用ゴム組成物 |
EP2031015B1 (en) * | 2007-07-27 | 2016-01-27 | Bridgestone Corporation | Rubber composite and tire using the same |
JP5467738B2 (ja) * | 2007-07-27 | 2014-04-09 | 株式会社ブリヂストン | ゴム組成物およびそれを用いたタイヤ |
EP2348068B1 (en) * | 2008-10-01 | 2017-01-04 | Bridgestone Corporation | Rubber composition and pneumatic tire produced using same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02182737A (ja) * | 1989-01-07 | 1990-07-17 | Bridgestone Corp | ゴム組成物および該ゴム組成物を用いたトレッド部を有する大型ラジアルタイヤ |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4895911A (en) * | 1988-10-06 | 1990-01-23 | The Goodyear Tire & Rubber Company | Tall oil fatty acid mixture in rubber |
-
1993
- 1993-07-14 US US08/403,720 patent/US5587417A/en not_active Expired - Fee Related
- 1993-07-14 JP JP51731193A patent/JP3200067B2/ja not_active Expired - Fee Related
- 1993-07-14 ES ES93916158T patent/ES2111759T3/es not_active Expired - Lifetime
- 1993-07-14 DE DE69315587T patent/DE69315587T2/de not_active Expired - Fee Related
- 1993-07-14 EP EP93916158A patent/EP0661343B1/en not_active Expired - Lifetime
- 1993-07-14 WO PCT/JP1993/000971 patent/WO1993019578A2/ja active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02182737A (ja) * | 1989-01-07 | 1990-07-17 | Bridgestone Corp | ゴム組成物および該ゴム組成物を用いたトレッド部を有する大型ラジアルタイヤ |
Non-Patent Citations (1)
Title |
---|
See also references of EP0661343A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005133017A (ja) * | 2003-10-31 | 2005-05-26 | Yokohama Rubber Co Ltd:The | サイドウォール用ゴム組成物 |
US7432318B2 (en) | 2004-01-30 | 2008-10-07 | Sumitomo Rubber Industries, Ltd. | Rubber composition for a tire and pneumatic tire using the same |
JP2005344063A (ja) * | 2004-06-04 | 2005-12-15 | Toyo Tire & Rubber Co Ltd | 重荷重用タイヤトレッドゴム組成物 |
WO2010143633A1 (ja) * | 2009-06-10 | 2010-12-16 | 株式会社ブリヂストン | ゴム組成物及びそれを用いたタイヤ |
Also Published As
Publication number | Publication date |
---|---|
EP0661343B1 (en) | 1997-12-03 |
WO1993019578A3 (fr) | 1993-11-25 |
EP0661343A4 (en) | 1995-12-06 |
DE69315587D1 (de) | 1998-01-15 |
DE69315587T2 (de) | 1998-04-16 |
ES2111759T3 (es) | 1998-03-16 |
US5587417A (en) | 1996-12-24 |
JP3200067B2 (ja) | 2001-08-20 |
EP0661343A1 (en) | 1995-07-05 |
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