JPH10219034A - Pneumatic tire for heavy-duty use - Google Patents
Pneumatic tire for heavy-duty useInfo
- Publication number
- JPH10219034A JPH10219034A JP9011134A JP1113497A JPH10219034A JP H10219034 A JPH10219034 A JP H10219034A JP 9011134 A JP9011134 A JP 9011134A JP 1113497 A JP1113497 A JP 1113497A JP H10219034 A JPH10219034 A JP H10219034A
- Authority
- JP
- Japan
- Prior art keywords
- carbon black
- weight
- parts
- silica
- pneumatic tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、走行後の発熱性
能、外観性能および耐摩耗性に優れ、かつ物性低下が抑
制された重荷重の建設車両用タイヤ、特に未舗装路を走
行する重荷重用空気入りタイヤに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy-duty tire for a construction vehicle which is excellent in heat generation performance, appearance performance and wear resistance after running, and in which deterioration of physical properties is suppressed, particularly for heavy load traveling on an unpaved road. Related to pneumatic tires.
【０００２】[0002]
【従来の技術】従来、悪路用重荷重用空気入りタイヤに
おいては、発熱性能、外観性性能、耐摩耗性および諸物
性等の低下を防止するための手法として、タイヤトレッ
ドゴム組成物に配合するカーボンブラックの選定、その
充填量の適正化等が行われてきた。また近年では、トレ
ッドゴム組成物にカーボンブラックの配合とともに、シ
リカを配合した重荷重用空気入りタイヤのトレッドゴム
も種々提案されている。2. Description of the Related Art Conventionally, pneumatic tires for heavy loads on rough roads are compounded with a tire tread rubber composition as a method for preventing deterioration in heat generation performance, appearance performance, abrasion resistance and various physical properties. Selection of carbon black and optimization of its filling amount have been performed. In recent years, various tread rubbers for heavy duty pneumatic tires containing silica in addition to carbon black in the tread rubber composition have been proposed.
【０００３】例えば、特開平１−３１１１４１号、特開
平３−６５４０６号および特開平４−２２６１４０号公
報には、建設車両等の重荷重用空気入りタイヤのトレッ
ド用ゴム組成物に、カーボンブラックと共にシリカを配
合し、耐摩耗性、耐カット性、発熱性能等を改良しよう
とする試みが提案されている。For example, JP-A-1-311141, JP-A-3-65406 and JP-A-4-226140 disclose that a rubber composition for a tread of a heavy-duty pneumatic tire such as a construction vehicle includes silica together with carbon black. And attempts to improve wear resistance, cut resistance, heat generation performance, and the like have been proposed.
【０００４】また、特開平３−８４０４９号および特開
平５−９８０７４号公報には、同じく重荷重用空気入り
タイヤのトレッド用ゴム組成物において、特定の特性を
有するカーボンブラックと共にシリカを配合することに
より耐摩耗性、耐破壊性、低発熱性、悪路外観性能等を
改良しようとする試みが提案されている。Japanese Patent Application Laid-Open (JP-A) Nos. 3-84049 and 5-98074 disclose a rubber composition for a tread of a heavy-duty pneumatic tire, in which silica is compounded together with carbon black having specific characteristics. Attempts have been made to improve wear resistance, destruction resistance, low heat generation, poor road appearance performance, and the like.
【０００５】さらに、特開昭６１−２８７９４５号、特
開平１−１１８５５１号公報には、ゴム組成物にカーボ
ンブラックとシリカを配合することにより低発熱性およ
び耐カット性が改良されるということが述べられてい
る。さらにまた、特開昭４６−１６８８号公報には、タ
イヤのような過酷な条件下で使用されるゴム製品の機械
的特性の劣化を防止するために、カーボンブラックとシ
リカを配合することが開示されている。Further, JP-A-61-287945 and JP-A-1-118551 disclose that the addition of carbon black and silica to a rubber composition improves low heat build-up and cut resistance. Has been stated. Furthermore, JP-A-46-1688 discloses that carbon black and silica are blended in order to prevent the deterioration of the mechanical properties of rubber products used under severe conditions such as tires. Have been.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、重荷重
用空気入りタイヤのトレッド用ゴム組成物において、カ
ーボンブラックと共にシリカを配合する従来技術は、い
ずれも走行後の発熱性能、外観性能および耐摩耗性を向
上し、かつ物性の低下、特には高温下での破断伸び（Ｅ
ｂ）の低下を抑制しようとするものではなかった。すな
わち、従来技術においては、外観性能、耐摩耗性および
発熱特性を改良することに加え、悪路走行によるトレッ
ド部の激しい変化後の物性の低下を抑制するという点に
ついてはまったく配慮がなされていなかった。However, the prior art in which silica is compounded together with carbon black in a rubber composition for a tread of a heavy-duty pneumatic tire, the heat generation performance after running, the appearance performance and the abrasion resistance are all reduced. And elongation at break at high temperatures (E
It was not intended to suppress the decrease in b). That is, in the prior art, in addition to improving the appearance performance, abrasion resistance and heat generation characteristics, no consideration has been given to suppressing the deterioration of the physical properties after a severe change in the tread portion due to rough road running. Was.
【０００７】そこで本発明の目的は、重荷重の建設車輛
用タイヤ、特に未舗装路を走行する重荷重用空気入りタ
イヤにおいて、走行後の外観性能および耐摩耗性を向上
し、かつ発熱性能および物性の低下、特には高温下での
破断伸び（Ｅｂ）の低下を抑制しようとするものであ
る。SUMMARY OF THE INVENTION An object of the present invention is to improve the appearance and wear resistance of a tire for heavy construction vehicles, especially a heavy-duty pneumatic tire traveling on an unpaved road, after traveling, and to generate heat and improve physical properties. , In particular, a decrease in elongation at break (Eb) at high temperatures.
【０００８】[0008]
【課題を解決するための手段】本発明者らは、上記課題
を解決すべく鋭意検討した結果、特定の特性を有するカ
ーボンブラックとシリカとを所定量配合するとともに、
老化防止剤を従来に比し多量に配合したゴム組成物をト
レッドに適用したところ、耐摩耗性および外観性能が向
上するともに、悪路走行後における発熱性能および破断
伸び（Ｅｂ）の低下が抑えられることを見出し、本発明
を完成するに至った。Means for Solving the Problems The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, have prescribed amounts of carbon black and silica having specific characteristics,
When a rubber composition containing a large amount of an anti-aging agent is applied to a tread as compared with the related art, wear resistance and appearance performance are improved, and a decrease in heat generation performance and elongation at break (Eb) after running on a rough road is suppressed. And found that the present invention was completed.
【０００９】すなわち、本発明の重荷重用空気入りタイ
ヤは、イソプレン系ゴム原材料１００重量部に対し、窒
素吸着比表面積が１３０〜１８０ｍ2 ／ｇで、かつジブ
チルフタレート吸油量（ＤＢＰ）が８０〜１２０ｍｌ／
１００ｇであるカーボンブラック３０〜５０重量部と、
窒素吸着比表面積が１７０ｍ2 ／ｇ以上であるシリカ５
〜１５重量部と、老化防止剤２．０重量部以上とが配合
されてなり、シリカとカーボンブラックの配合比（シリ
カ／カーボンブラック）が０．１〜０．５であるゴム組
成物をトレッドゴムとすることを特徴とするものであ
る。That is, the heavy duty pneumatic tire of the present invention has a nitrogen adsorption specific surface area of 130 to 180 m 2 / g and a dibutyl phthalate oil absorption (DBP) of 80 to 120 ml per 100 parts by weight of the isoprene-based rubber raw material. /
30 to 50 parts by weight of carbon black which is 100 g;
Silica 5 having a nitrogen adsorption specific surface area of 170 m 2 / g or more
To 15 parts by weight and at least 2.0 parts by weight of an antioxidant, and a tread of a rubber composition having a mixing ratio of silica to carbon black (silica / carbon black) of 0.1 to 0.5. It is characterized by rubber.
【００１０】従来の重荷重用空気入りタイヤにおいて
は、悪路走行で路面の凹凸によってトレッド部が激しく
変形されることにより網目が増加し、破断伸び（Ｅｂ）
の低下を招いていた。これに対し、本発明においては、
上記カーボンブラックとシリカと老化防止剤の組合わせ
により、上記網目の増加を抑制し、走行後の破断伸び
（Ｅｂ）の低下を抑えることを可能にした。In a conventional heavy-duty pneumatic tire, the tread portion is severely deformed by unevenness of the road surface when traveling on a rough road, so that the mesh increases and the elongation at break (Eb) increases.
Had been reduced. In contrast, in the present invention,
The combination of the above carbon black, silica and an antioxidant makes it possible to suppress the increase in the mesh and to suppress a decrease in elongation at break (Eb) after running.
【００１１】[0011]
【発明の実施の形態】本発明において用いるイソプレン
系ゴムとしては、天然ゴム、イソプレン合成ゴムが挙げ
られる。BEST MODE FOR CARRYING OUT THE INVENTION The isoprene-based rubber used in the present invention includes natural rubber and isoprene synthetic rubber.
【００１２】また、カーボンブラックとしては、窒素吸
着比表面積が１３０〜１８０ｍ2 ／ｇで、かつジブチル
フタレート吸油量（ＤＢＰ）が８０〜１２０ｍｌ／１０
０ｇ、好ましくは窒素吸着比表面積が１４０〜１７０ｍ
2 ／ｇで、かつＤＢＰが９０〜１１０ｍｌ／１００ｇで
ある。かかるカーボンブラックの窒素吸着比表面積が１
３０ｍ2 ／ｇ未満では十分な耐摩耗性が得られず、一方
１８０ｍ2 ／ｇを超えると生産性の大幅な低下を招くこ
とになる。また、ＤＢＰが８０ｍｌ／１００ｇ未満であ
るとやはり生産性の大幅な低下を招き、一方１２０ｍｌ
／１００ｇを超えるとゲルが増大し、破断伸び（Ｅｂ）
の低下が増大する。このカーボンブラックの配合量がゴ
ム原材料１００重量部に対して３０重量部未満であると
十分な耐摩耗性が得られず、一方５０重量部を超えると
分散不良を起こし、発熱性能および耐摩耗性の低下を招
くことになる。The carbon black has a nitrogen adsorption specific surface area of 130 to 180 m 2 / g and a dibutyl phthalate oil absorption (DBP) of 80 to 120 ml / 10 g.
0 g, preferably having a nitrogen adsorption specific surface area of 140 to 170 m
2 / g and the DBP is 90-110 ml / 100 g. The nitrogen adsorption specific surface area of such carbon black is 1
If it is less than 30 m 2 / g, sufficient wear resistance cannot be obtained, while if it exceeds 180 m 2 / g, the productivity will be greatly reduced. Further, when the DBP is less than 80 ml / 100 g, the productivity is also significantly lowered, while the DBP is less than 120 ml / 100 g.
/ 100g, gel increases and elongation at break (Eb)
Increase. If the compounding amount of the carbon black is less than 30 parts by weight with respect to 100 parts by weight of the rubber raw material, sufficient abrasion resistance cannot be obtained, while if it exceeds 50 parts by weight, poor dispersion occurs, and heat generation performance and abrasion resistance Will be reduced.
【００１３】さらに、シリカとしては、窒素吸着比表面
積が１７０ｍ2 ／ｇ以上である。窒素吸着比表面積が１
７０ｍ2 ／ｇ未満であると耐摩耗性の低下を招き、好ま
しくない。また、このシリカの配合量がゴム原材料１０
０重量部に対して５重量部未満であると破断伸び（Ｅ
ｂ）の低下抑制等の効果が得られず、一方１５重量部を
超えると分散不良を起こし、発熱性能の低下を招くこと
になる。Further, silica has a nitrogen adsorption specific surface area of 170 m 2 / g or more. Nitrogen adsorption specific surface area is 1
If it is less than 70 m 2 / g, abrasion resistance is lowered, which is not preferable. In addition, the compounding amount of this silica is
If the amount is less than 5 parts by weight with respect to 0 parts by weight, the elongation at break (E
The effect of suppressing the decrease in b) cannot be obtained. On the other hand, if it exceeds 15 parts by weight, poor dispersion will occur, and the heat generation performance will decrease.
【００１４】さらにまた、本発明においてはシリカとカ
ーボンブラックの配合比（シリカ／カーボンブラック）
が０．１〜０．５、好ましくは０．１５〜０．３であ
る。この比が０．１未満であると破断伸び（Ｅｂ）の低
下抑制等の効果が得られず、一方０．５を超えると分散
不良を起こし、発熱性能および耐摩耗性が大幅に低下す
る。Furthermore, in the present invention, the mixing ratio of silica and carbon black (silica / carbon black)
Is 0.1 to 0.5, preferably 0.15 to 0.3. If the ratio is less than 0.1, effects such as suppression of a decrease in elongation at break (Eb) cannot be obtained, while if it exceeds 0.5, poor dispersion occurs, and the heat generation performance and abrasion resistance are significantly reduced.
【００１５】なお、カーボンブラックの窒素吸着比表面
積はＡＳＴＭ Ｄ４８２０−９３、ＤＢＰはＡＳＴＭ
Ｄ２４１４−９３に夫々準拠して測定した値である。ま
た、シリカの窒素吸着比表面積は乾燥条件３００℃×１
ｈｒ実施後同様に、ＡＳＴＭＤ４８２０−９３に準拠し
て測定した値である。The nitrogen adsorption specific surface area of carbon black is ASTM D 4820-93, and DBP is ASTM D
It is a value measured according to each of D2414-93. The nitrogen adsorption specific surface area of the silica is 300 ° C. × 1 under the drying condition.
It is a value measured in accordance with ASTM D4820-93 in the same manner after the execution of hr.
【００１６】また、本発明においては、ゴム原材料１０
０重量部に対して老化防止剤、好ましくはアミン系老化
防止剤が２．０重量部以上、好ましくは２．５重量部以
上、さらに好ましくは３．０以上配合されていることを
要する。老化防止剤の配合量が２．０重量部未満である
と破断伸び（Ｅｂ）の低下抑制等の効果が得られない。In the present invention, the rubber raw material 10
It is necessary that an antioxidant, preferably an amine antioxidant, is added in an amount of 2.0 parts by weight or more, preferably 2.5 parts by weight or more, more preferably 3.0 or more based on 0 parts by weight. If the amount of the antioxidant is less than 2.0 parts by weight, effects such as suppression of a decrease in elongation at break (Eb) cannot be obtained.
【００１７】本発明の重荷重用空気入りタイヤのトレッ
ドゴムには、上述の特定カーボンブラック、シリカおよ
び老化防止剤以外に、通常使用される加硫剤、加硫促進
剤、加硫助剤、その他の配合剤が通常使用される分量で
適宜配合され得るものである。The tread rubber of the pneumatic tire for heavy loads according to the present invention contains, in addition to the above-mentioned specific carbon black, silica and an antioxidant, vulcanizing agents, vulcanization accelerators, vulcanization aids and the like which are usually used. Can be appropriately compounded in a commonly used amount.
【００１８】上述したゴム組成物を用いたトレッドは、
１層構造の他に、所謂キャップ／ベース構造の２層構造
とし、キャップ部のみに本発明に係るゴム組成物を適用
し、ベース部には別のゴムを使用してもよい。The tread using the above rubber composition is
In addition to the one-layer structure, a so-called two-layer structure of a cap / base structure may be used, and the rubber composition according to the present invention may be applied only to the cap portion, and another rubber may be used for the base portion.
【００１９】[0019]
【実施例】以下、本発明を実施例により具体的に説明す
る。下記の表１に示す配合内容に基づき各種ゴム組成物
を調製し、かかるゴム組成物をトレッドゴムとして用い
て通常の加硫条件に従い、供試タイヤ（オフザロードタ
イヤ：３７００Ｒ５７）を作製した。製造された供試タ
イヤについて代表的鉱山で実車走行させ、下記に示す各
性能試験を実施した。The present invention will be described below in more detail with reference to examples. Various rubber compositions were prepared based on the compounding contents shown in Table 1 below, and test tires (off-the-road tires: 3700R57) were produced using the rubber compositions as tread rubbers under normal vulcanization conditions. The manufactured test tires were run on a typical vehicle at a typical mine, and the following performance tests were performed.
【００２０】（ア）発熱性能 一定時間連続走行させ、温度をトレッド部内側の定位置
で測定し、比較例１を１００として指数表示した。数値
が大きい程低発熱性であることを示す。(A) Heat generation performance The vehicle was driven continuously for a certain period of time, and the temperature was measured at a fixed position inside the tread portion. The larger the value, the lower the heat generation.
【００２１】（イ）破断伸び（Ｅｂ） ＪＩＳ Ｋ ６２５１に従い、タイヤのトレッド部から
２ｍｍ厚に切り出して作った３号のダンベル形状のサン
プルに対して破断伸びを測定した。評価は、比較例１の
走行前を１００として指数表示した。数値が大きい程破
断伸び（Ｅｂ）が優れていることを示す。(A) Elongation at break (Eb) In accordance with JIS K6251, the elongation at break was measured on a dumbbell-shaped sample of No. 3 cut out from the tread portion of the tire to a thickness of 2 mm. The evaluation was expressed as an index with the value before traveling of Comparative Example 1 as 100. The larger the value, the better the breaking elongation (Eb).
【００２２】（ウ）外観性能 一定時間走行後のトレッド部における傷の総面積を測定
した。比較例１を１００として指数表示した。数値が大
きい程外観性能に優れていることを示す。(C) Appearance performance The total area of the scratches on the tread after running for a certain time was measured. The index was indicated as an index with Comparative Example 1 being 100. The larger the value, the better the appearance performance.
【００２３】（エ）耐摩耗性 一定時間走行後の残った溝の深さを数か所測定し、その
平均値から式、［（供試タイヤの残溝深さ）／（コント
ロールタイヤ（比較例１）の残溝深さ）］×１００によ
って評価した。数値が大きい程耐摩耗性が大きいことを
示す。得られた結果を下記の表１に併記する。(D) Abrasion resistance The depth of the remaining groove after traveling for a certain period of time was measured at several points, and the average value was used to calculate the formula: [(remaining groove depth of test tire) / (control tire (comparison) Remaining groove depth of Example 1)]] × 100. The larger the value, the higher the wear resistance. The results obtained are shown in Table 1 below.
【００２４】[0024]
【表１】 １）天然ゴム ２）スチレンブタジエンゴム ３）窒素吸着比表面積：１７０〜２２０ｍ２／ｇ（日本
シリカＡＱ） ４）サントフレックス１３（Ｎ−（１，３−ジメチルブ
チル）−Ｎ’−ｐ−フェニル−フェニレンジアミン） ５）サントフレックス１７（Ｎ，Ｎ’−ビス（１−エチ
ル−３−メチルペンチル）−ｐ−フェニレンジアミン） ６）Ｎ−シクロヘキシル−２−ベンゾチアジル−スルフ
ェンアミド[Table 1] 1) Natural rubber 2) styrene-butadiene rubber 3) nitrogen adsorption specific surface area: 170~220m 2 / g (Nippon Silica AQ) 4) Santoflex 13 (N- (1,3- dimethylbutyl)-N'-p-phenyl -Phenylenediamine) 5) Santoflex 17 (N, N'-bis (1-ethyl-3-methylpentyl) -p-phenylenediamine) 6) N-cyclohexyl-2-benzothiazyl-sulfenamide
【００２５】[0025]
【発明の効果】以上説明してきたように、本発明の重荷
重用空気入りタイヤにおいては、外観性能および耐摩耗
性が著しく向上し、しかも走行後における発熱性能、高
温下での破断伸び（Ｅｂ）の低下が著しく抑制されると
いう効果が得られる。As described above, in the pneumatic tire for heavy load according to the present invention, the appearance performance and wear resistance are remarkably improved, and the heat generation performance after running and the elongation at break under high temperature (Eb). The effect is obtained that the decrease in the temperature is significantly suppressed.
Claims (5)
対し、窒素吸着比表面積が１３０〜１８０ｍ2 ／ｇで、
かつジブチルフタレート吸油量（ＤＢＰ）が８０〜１２
０ｍｌ／１００ｇであるカーボンブラック３０〜５０重
量部と、窒素吸着比表面積が１７０ｍ2 ／ｇ以上である
シリカ５〜１５重量部と、老化防止剤２．０重量部以上
とが配合されてなり、シリカとカーボンブラックの配合
比（シリカ／カーボンブラック）が０．１〜０．５であ
るゴム組成物をトレッドゴムとすることを特徴とする重
荷重用空気入りタイヤ。1. A nitrogen adsorption specific surface area of 130 to 180 m 2 / g with respect to 100 parts by weight of an isoprene rubber raw material,
And a dibutyl phthalate oil absorption (DBP) of 80 to 12
30 to 50 parts by weight of carbon black of 0 ml / 100 g, 5 to 15 parts by weight of silica having a nitrogen adsorption specific surface area of 170 m 2 / g or more, and 2.0 parts by weight or more of an antioxidant, A pneumatic tire for heavy load, characterized in that a rubber composition having a compounding ratio of silica and carbon black (silica / carbon black) of 0.1 to 0.5 is used as a tread rubber.
積（Ｎ2 ＳＡ）が１４０〜１７０ｍ2 ／ｇで、かつジブ
チルフタレート吸油量（ＤＢＰ）が９０〜１１０ｍｌ／
１００ｇである請求項１記載の重荷重用空気入りタイ
ヤ。2. The carbon black has a nitrogen adsorption specific surface area (N 2 SA) of 140 to 170 m 2 / g and a dibutyl phthalate oil absorption (DBP) of 90 to 110 ml / g.
The pneumatic tire for heavy load according to claim 1, which weighs 100 g.
が０．１５〜０．３である請求項１または２記載の重荷
重用空気入りタイヤ。3. The pneumatic tire for heavy loads according to claim 1, wherein the compounding ratio of the silica and carbon black is 0.15 to 0.3.
あり、該アミン系老化防止剤がゴム原材料１００重量部
に対して２．５重量部以上配合されている請求項１、２
または３記載の重荷重用空気入りタイヤ。4. The antioxidant according to claim 1, wherein the antioxidant is an amine antioxidant, and the amine antioxidant is added in an amount of 2.5 parts by weight or more based on 100 parts by weight of the rubber raw material.
Or the pneumatic tire for heavy loads according to 3.
あり、該アミン系老化防止剤がゴム原材料１００重量部
に対して３．０重量部以上配合されている請求項４記載
の重荷重用空気入りタイヤ。5. The heavy-duty agent according to claim 4, wherein the anti-aging agent is an amine-based anti-aging agent, and the amine-based anti-aging agent is compounded in an amount of 3.0 parts by weight or more based on 100 parts by weight of the rubber raw material. Pneumatic tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9011134A JPH10219034A (en) | 1996-01-31 | 1997-01-24 | Pneumatic tire for heavy-duty use |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3568496 | 1996-01-31 | ||
| JP8-35684 | 1996-12-03 | ||
| JP32275296 | 1996-12-03 | ||
| JP8-322752 | 1996-12-03 | ||
| JP9011134A JPH10219034A (en) | 1996-01-31 | 1997-01-24 | Pneumatic tire for heavy-duty use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10219034A true JPH10219034A (en) | 1998-08-18 |
Family
ID=27279290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9011134A Pending JPH10219034A (en) | 1996-01-31 | 1997-01-24 | Pneumatic tire for heavy-duty use |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10219034A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000296702A (en) * | 1999-02-08 | 2000-10-24 | Bridgestone Corp | Pneumatic tire |
| JP2001213112A (en) * | 2000-02-01 | 2001-08-07 | Bridgestone Corp | Pneumatic tire for heavy load |
| JP2001247720A (en) * | 2000-03-03 | 2001-09-11 | Sumitomo Rubber Ind Ltd | Rubber composition for outer skin |
| KR20030027971A (en) * | 2001-09-18 | 2003-04-08 | 금호산업 주식회사 | Tread compound for truck and bus |
| WO2014103876A1 (en) * | 2012-12-28 | 2014-07-03 | 横浜ゴム株式会社 | Rubber composition for pneumatic tires for construction vehicles |
-
1997
- 1997-01-24 JP JP9011134A patent/JPH10219034A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000296702A (en) * | 1999-02-08 | 2000-10-24 | Bridgestone Corp | Pneumatic tire |
| JP2001213112A (en) * | 2000-02-01 | 2001-08-07 | Bridgestone Corp | Pneumatic tire for heavy load |
| JP2001247720A (en) * | 2000-03-03 | 2001-09-11 | Sumitomo Rubber Ind Ltd | Rubber composition for outer skin |
| KR20030027971A (en) * | 2001-09-18 | 2003-04-08 | 금호산업 주식회사 | Tread compound for truck and bus |
| WO2014103876A1 (en) * | 2012-12-28 | 2014-07-03 | 横浜ゴム株式会社 | Rubber composition for pneumatic tires for construction vehicles |
| JP2014129436A (en) * | 2012-12-28 | 2014-07-10 | Yokohama Rubber Co Ltd:The | Rubber composition for pneumatic tire for construction vehicle |
| US9878580B2 (en) | 2012-12-28 | 2018-01-30 | The Yokohama Rubber Co., Ltd. | Rubber composition for pneumatic tires for construction vehicles |
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