JPS6166733A - Rubber composition for tire tread - Google Patents
Rubber composition for tire treadInfo
- Publication number
- JPS6166733A JPS6166733A JP18869784A JP18869784A JPS6166733A JP S6166733 A JPS6166733 A JP S6166733A JP 18869784 A JP18869784 A JP 18869784A JP 18869784 A JP18869784 A JP 18869784A JP S6166733 A JPS6166733 A JP S6166733A
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- styrene content
- rubber
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Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明はグリップ性、耐摩耗性、低転勤抵抗性及び低
温特性を総合的に改善したオールシーズン用タイヤのト
レッドゴム組成物に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a tread rubber composition for all-season tires that has comprehensively improved grip properties, abrasion resistance, low rolling resistance, and low-temperature properties.
（従来技術）
冬期に路面が氷結もしくは積雪する地域においては、自
動車の走行安定性を確保するため夏期に装着していたタ
イヤを取外してスノータイヤ或いはスパイクタイヤ等を
装着することが一般的に行われているがタイヤの交換の
手間及び保管の必要を生ずる欠点がある。(Prior art) In areas where road surfaces freeze or snow in the winter, it is common practice to remove the tires installed in the summer and install snow tires or spiked tires in order to ensure driving stability of the vehicle. However, it has the disadvantage of requiring tire replacement and storage.
また年間を通して交換せずに走行できるタイヤとして夏
タイヤ及びスノータイヤの中間的な特性を有するいわゆ
るオールシーズンタイヤがあるが、−ｉに低温特性、ウ
ェットグリップ性あるいは耐摩耗性の緒特性のうちどれ
かの特性の犠牲を伴うものである。In addition, there are so-called all-season tires that can be driven throughout the year without needing to be replaced, and have intermediate characteristics between summer tires and snow tires. This entails sacrificing that characteristic.
例えば、路面と直接接地するトレッドゴム配合面から見
れば、グリップ性の向上を目的として、ポリマーとして
は、スチレン含量の多いハイスチレンＳＢＲが主体とし
て用いられることがある。For example, from the perspective of a tread rubber compound that is in direct contact with the road surface, high styrene SBR, which has a high styrene content, is sometimes used as the main polymer for the purpose of improving grip.
最近では、スチレン含量、ビニル結含量が従来の乳化重
合ＳＢＲより幾分多い溶液重合ＳＢＲもタイヤ用トレッ
ドゴム配合として提案されている。Recently, solution polymerized SBR, which has a somewhat higher styrene content and vinyl bond content than conventional emulsion polymerized SBR, has also been proposed as a tread rubber compound for tires.
このようなタイヤは、Ｔｇの高いハイスチレンＳＢＲ乃
至溶液重合ＳＢＲを使用してグリップ性を向上させてい
る為゛に、冬季のような低温状態ではゴムが硬化し、ト
レッド表面が路面の微少な凹凸に沿いきれず、有効接触
面積が減少して、グリップ性が低下してしまう問題があ
った。従来、この点を改良する為に例えばオイル等の軟
化剤を使用して、低温時の硬度を下げると、同時に常温
でも硬度が低下して、ハンドル応答性が悪化してしまう
問題があった。These tires use high styrene SBR or solution polymerized SBR with a high Tg to improve grip, so in low temperature conditions such as winter, the rubber hardens and the tread surface becomes resistant to minute particles of the road surface. There was a problem in that the grip could not follow the unevenness, the effective contact area was reduced, and the grip performance was deteriorated. Conventionally, in order to improve this point, for example, by using a softening agent such as oil to lower the hardness at low temperatures, there was a problem that the hardness also decreased at room temperature and the handle responsiveness deteriorated.
（解決しようとする問題点）
この発明は操縦安定性を高めるため、従来多用されてい
たハイスチレンＳＢＲを主体としたトレッドゴム配合の
タイヤが冬期においてゴムが硬化し、グリップ性が著し
く低下するという欠点を改善するもので、スチレン含量
、ビニル含量及び粘度が特定範囲に限定されたＳＢＲを
ポリマーの主体として用いたゴム配合を採用することに
より、グリップ性、耐摩耗性、低転勤抵抗性及び低温特
性が総合的に改善されたオールシーズン用タイヤを提供
することを目的とする。(Problems to be Solved) This invention aims to improve handling stability, and it has been found that tires with a tread rubber compound mainly made of high styrene SBR, which has been widely used in the past, harden in the winter, resulting in a significant decrease in grip performance. By using a rubber compound that uses SBR as the main polymer, which has styrene content, vinyl content, and viscosity limited to a specific range, it improves grip properties, abrasion resistance, low transfer resistance, and low temperature. The objective is to provide an all-season tire with comprehensively improved characteristics.
（問題点を解決するための手段）
本発明はグリップ性能、操縦安定性能、低転勤抵抗性能
は改質された溶液重合ＳＢＲを使用することによって維
持し、低温特性の改善は、耐寒性可塑剤を使用して改良
した全く新しいトレッドゴム組成物である。(Means for Solving the Problems) The present invention maintains grip performance, handling stability performance, and low rollover resistance performance by using modified solution polymerized SBR, and improves low-temperature properties by using a cold-resistant plasticizer. This is a completely new tread rubber composition that has been improved using.
本発明は３０℃トルエン溶液中での極限粘度が１．７以
上３．０未満であり、かつスチレン含量が２２％以上２
８％未満で、ブタジェン部分のビニル含量が３６％以上
４２％未満でかつ、３乃至４官能生の結合剤で変性され
た高分子鎖の割合が４０重量％以上６５重量％以下であ
る溶液重合ＳＢＲを２５以上７０重量部未満、スチレン
含量が２２％以上で２５％未満の乳化重合ＳＢＲを３０
重量部以上７５重量部未満でゴム成分の合計で１００重
量部含有し、このゴム成分１００重量部に対して平均粒
子径が２０〜３０μの範囲のカーボンブラックを４０〜
７０重量部配合したことを特徴とするタイヤトレッドゴ
ム組成物である。The present invention has an intrinsic viscosity of 1.7 or more and less than 3.0 in a toluene solution at 30°C, and a styrene content of 22% or more and 2.
Solution polymerization in which the vinyl content of the butadiene moiety is 36% or more and less than 42%, and the proportion of polymer chains modified with a trifunctional or tetrafunctional binder is 40% or more and 65% or less by weight. SBR of 25 or more and less than 70 parts by weight, emulsion polymerized SBR with a styrene content of 22% or more and less than 25%.
Contains a total of 100 parts by weight of the rubber component in an amount of parts by weight or more and less than 75 parts by weight, and contains 40 to 40 parts by weight of carbon black having an average particle diameter of 20 to 30 μ per 100 parts by weight of the rubber component.
This is a tire tread rubber composition characterized in that it contains 70 parts by weight.
ここで、溶液重合ＳＢＲは極限粘度が１．７未満では転
勤抵抗性が悪化し、また３、 ０以上では混練・押出等
の加工性が損なわれタイヤ製造に重大な欠点を有する為
に好ましくない。また、そのスチレン含量が２２％未満
では、ウェットグリップ性が損なわれ危険であり、また
２８％以上では発熱が大きくなって高速走行時の耐久性
と転勤抵抗性が低下するため好ましくない、さらにビニ
ル含量が３６％未満では同じくウェットグリップ性が損
なわれ、逆に４２％以上であれば、高温時の引裂抗力が
低下して、タイヤ加硫終了時のトレンド部損傷、いわゆ
るデモールドスプリフティングが生じる為に好ましくな
い、また、加工性、特に押出時のロールバギング性、押
出肌、シート粘着性にすぐれたゴム組成物を得る為に、
３乃至４官能性の結合剤で高分子鎖を変性するが、その
割合が４０重量％未満ではこれらの加工性の改良効果が
小さく、また６５重量％未満では、バギング性、シート
肌は改良されるが、シート粘着性が低下する為に好まし
くない。Solution-polymerized SBR is not preferred because if the intrinsic viscosity is less than 1.7, the transfer resistance deteriorates, and if it is more than 3.0, the processability such as kneading and extrusion is impaired, which has serious drawbacks in tire manufacturing. . In addition, if the styrene content is less than 22%, it is dangerous because the wet grip property is impaired, and if it is more than 28%, heat generation increases and durability and transfer resistance during high-speed running are reduced, which is undesirable. If the content is less than 36%, the wet grip properties will be impaired, and if it is more than 42%, the tear resistance at high temperatures will decrease, causing damage to the trend area at the end of tire vulcanization, so-called demold sprifing. In addition, in order to obtain a rubber composition that has excellent processability, particularly roll bagging properties during extrusion, extrusion texture, and sheet adhesion,
Polymer chains are modified with a tri- or tetrafunctional binder, but if the proportion is less than 40% by weight, the effect of improving processability is small, and if it is less than 65% by weight, bagging properties and sheet texture are not improved. However, this is not preferable because the sheet adhesiveness decreases.
本発明で使用される溶液重合ＳＢＨの製造方法は以下の
通りである。The method for producing solution polymerized SBH used in the present invention is as follows.
即ち、炭化水素溶媒中で、有機アルカリ金属化合物を開
始剤として、スチレンおよびブタジェンを共重合するに
際し、エーテル類もしくは第３級アミン類の如き、ルイ
ス塩基性化合物を共存せしめ、共重合を実施し、該共重
合体溶液中の、いわゆる「リビング活性末端」に対して
、３官能性または４官能性の結合剤を反応せしめること
により合成することができる。有機アルカリ金属化合物
としては、重合反応の安定性からアルキルリチウム類が
特に好ましく使用され、また、３官能性または４官能性
の結合剤としては、メチル・トリクロロ・ケイ素、四塩
化ケイ素、四塩化スズ等のハロゲン含有化合物が結合反
応の制御性の点から好ましく使用される。That is, when copolymerizing styrene and butadiene in a hydrocarbon solvent using an organic alkali metal compound as an initiator, a Lewis basic compound such as an ether or a tertiary amine is allowed to coexist and the copolymerization is carried out. can be synthesized by reacting a trifunctional or tetrafunctional binder with the so-called "living active end" in the copolymer solution. As the organic alkali metal compound, alkyl lithiums are particularly preferably used from the viewpoint of stability of the polymerization reaction, and as the trifunctional or tetrafunctional binder, methyl trichloro silicon, silicon tetrachloride, tin tetrachloride are used. From the viewpoint of controllability of the binding reaction, halogen-containing compounds such as the following are preferably used.
このような変性された分岐高分子鎖を含有する重合体を
製造する方法としては、アルカリ金属化合物を重合開始
剤として用いる公知のりピングアニオン重合法が有効で
あり、リビング活性重合体溶液に末端結合剤を作用させ
て活性重合体末端どうしを結合する方法が採用し得る。As a method for producing a polymer containing such a modified branched polymer chain, a well-known glueing anionic polymerization method using an alkali metal compound as a polymerization initiator is effective. A method may be adopted in which the active polymer ends are bonded to each other by the action of an agent.
この場合に結合された分岐を有する高分子鎖の重合体中
に占める重量比率はゲル・パーミェーション・クロマト
グラフ（Ｇ Ｐ Ｃ）によって測定された分子量分布か
ら、読み取ることができる。即ち結合された分岐を有す
る高分子鎖の平均分子量に相当するピークの高さと分岐
を有しない高分子鎖の平均分子量に相当するピークの高
さとの相対比をもって、それぞれの高分子鎖の重量比率
と定義する。In this case, the weight ratio of the polymer chains having bonded branches in the polymer can be read from the molecular weight distribution measured by gel permeation chromatography (GPC). In other words, the relative ratio between the height of the peak corresponding to the average molecular weight of polymer chains with combined branches and the height of the peak corresponding to the average molecular weight of polymer chains without branches is the weight ratio of each polymer chain. It is defined as
スチレン−ブタジェンゴムにおいて、結合された高分子
鎖は３官能性、４官能性の結合剤のいずれか、或いはそ
れらの混合された結合剤によって変性された形状を有す
ることができる。In the styrene-butadiene rubber, the bonded polymer chains can have a shape modified by a trifunctional or tetrafunctional binder, or a mixture thereof.
このような好ましい変性高分子鎖の割合を得るためには
スチレン−ブタジェンゴムの製造時において、使用する
結合剤の活性重合体末端に対するモル比を制御すべきで
あり、例えば４官能性の結合剤を使用する場合にはその
量を活性重合体末端１モルに対して０．１７５乃至０．
２５０モルとすべきである。In order to obtain such a preferable ratio of modified polymer chains, the molar ratio of the binder used to the active polymer terminal should be controlled during the production of styrene-butadiene rubber. When used, the amount is from 0.175 to 0.1% per mole of active polymer terminal.
It should be 250 moles.
本発明では上記溶液重合ＳＢＲを３０重量部以上７５重
量部未満含有することが必要で、３０重量部未満ではグ
リップ性能、操縦安定性能の改善が認められず、一方、
７５重量部以上では低温時のゴム硬度が上昇して、グリ
ップ性の低下を招来し好ましくない。次に本発明では、
乳化重合ＳＢＲが混入される。ここで乳化重合ＳＢＲは
、スチレン含量が２２％以上で２５％未満で、ゴム成分
１００重量部のうち３０重量部以上で７５重量部未満で
ある。この乳化重合ＳＢＲを上記範囲の量配合すること
により転勤抵抗の低減がまた本発明ではシス１，４ブタ
ジエンゴムを２５重量部未満の範囲で配合することが必
要であり、これによう良のため、組成物に配合されるカ
ーボンブラックは平均粒子径が２０〜３０μのものであ
ることが必要である。例えばＡＳＴＭ呼称Ｎ１１０、Ｎ
２２０、Ｎ２３４、Ｎ３３０、Ｎ３３９等のカーボンブ
ラックが使用される。平均粒子径が３０μを越えると、
補強性が低下し、耐摩耗性が劣るため好ましくない。In the present invention, it is necessary to contain the solution polymerized SBR in an amount of 30 parts by weight or more and less than 75 parts by weight, and if it is less than 30 parts by weight, no improvement in grip performance or steering stability performance is observed;
If it exceeds 75 parts by weight, the rubber hardness at low temperatures increases, leading to a decrease in grip properties, which is not preferable. Next, in the present invention,
Emulsion polymerized SBR is mixed. Here, the emulsion polymerized SBR has a styrene content of 22% or more and less than 25%, and 30 parts by weight or more and less than 75 parts by weight out of 100 parts by weight of the rubber component. By blending this emulsion polymerized SBR in an amount within the above range, transfer resistance can be reduced.In the present invention, it is necessary to blend cis-1,4-butadiene rubber in an amount of less than 25 parts by weight, and in order to improve the It is necessary that the carbon black blended into the composition has an average particle size of 20 to 30 microns. For example, ASTM designation N110, N
Carbon blacks such as 220, N234, N330, N339 are used. When the average particle size exceeds 30μ,
This is not preferred because the reinforcing properties are lowered and the wear resistance is inferior.
なおり−ボンブラックは好ましくはゴム１００重量部に
対して、４０〜７０重量部配合される。Naori-bon black is preferably blended in an amount of 40 to 70 parts by weight per 100 parts by weight of rubber.
本発明では、溶液重合ＳＢＨの使用によって得られたグ
リップ、操縦性を維持し、かつ低温時のタイヤ性能を改
良せしめるために、耐寒性可塑剤として、セバシン酸エ
ステル、アジピン酸エステル、脂肪酸エステルのうちか
ら選ばれた一種または二種以上の化合物を使用すること
によって、低温時の硬度上昇を出来るだけ抑えることが
でき、低温も路面の微少な凹凸に沿いうるようになり、
冬季或いは寒冷地での操縦性が向上する。In the present invention, in order to maintain the grip and maneuverability obtained by using solution polymerized SBH and to improve tire performance at low temperatures, sebacic acid ester, adipic acid ester, and fatty acid ester are used as cold-resistant plasticizers. By using one or more compounds selected from among them, it is possible to suppress the increase in hardness at low temperatures as much as possible, and it becomes possible to conform to minute irregularities on the road surface even at low temperatures.
Improves maneuverability in winter or in cold regions.
ここで耐寒性可塑剤はゴム成分１００重量部に対して３
〜２０重量部、好ましくは５〜１０重量部配合される。Here, the cold-resistant plasticizer is 3 parts by weight per 100 parts by weight of the rubber component.
~20 parts by weight, preferably 5 to 10 parts by weight.
以上のように調整されたゴム組成物には、通常のトレッ
ドゴム配合に使用されるプロセスオイル、ワックス、老
化防止剤、加硫剤、加硫助剤、加硫促進剤等が配合され
るのは勿論の事である。The rubber composition prepared as described above contains process oil, wax, anti-aging agent, vulcanizing agent, vulcanization aid, vulcanization accelerator, etc. used in ordinary tread rubber compounding. Of course.
次に本発明をより明確にする為、実施例を上げて説明す
るが、本発明はこれにより何隻限定されるものではない
。Next, in order to make the present invention more clear, examples will be given and explained, but the present invention is not limited to the number of ships.
なお実施例、比較例における各種物性の測定は以下の条
件で実施した。Note that measurements of various physical properties in Examples and Comparative Examples were carried out under the following conditions.
凰艮塾スユユＬ
オスワルド型溶液粘度測定器を用い、トル呈ン溶媒で３
０℃において測定した。3 using toluene solvent using Oswald type solution viscosity meter
Measured at 0°C.
東洋曹達型ＨＬＣ−８０２ＵＲを使用、分配カラムとし
て１．０’ 、１０’ 、１０６．１０’のカラムを選
択し、屈折計を検出器として用いた。展開溶媒としてテ
トラヒドロフラン（ＴＨＦ）を用いて４０℃で重合体の
分子量分布を測定した。変性された高分子鎖と変性され
ない高分子鎖のそれぞれの平均分子量に相当するピーク
の高さの相対比を持って、それぞれの高分子鎖の重量比
率とした。A Toyo Soda model HLC-802UR was used, 1.0', 10', and 106.10' columns were selected as distribution columns, and a refractometer was used as a detector. The molecular weight distribution of the polymer was measured at 40°C using tetrahydrofuran (THF) as a developing solvent. The relative ratio of the peak heights corresponding to the average molecular weights of the modified and unmodified polymer chains was determined as the weight ratio of each polymer chain.
ウェットグリップ性
組成物をプレス加硫して得られた厚さ６，５鶴のシート
についてスタンレイ社製ポータプルスキッドレジスタン
ステスターを用いて測定した。A sheet with a thickness of 6.5 mm obtained by press vulcanization of the wet grip composition was measured using a portaple skid resistance tester manufactured by Stanley.
接触路面として温度２０°Ｃの水を噴射したアスファル
ト面を測定した。The asphalt surface onto which water at a temperature of 20°C was sprayed was measured as the contact road surface.
ｔａｎ δ
粘弾性特性はパイブロンＤＤＶ−ｎ型の粘弾性スペクト
ロメーターを使用し、試験片で巾４鶴、長さ３０℃ｍ、
厚さ２ｆｉのものを初期歪み１０％、周波数１１Ｈ＊、
振巾２．０％、温度６０℃の条件下で測定した値である
。The tan δ viscoelastic properties were measured using a Pyblon DDV-n type viscoelastic spectrometer.
2fi thickness, initial strain 10%, frequency 11H*,
This is a value measured under conditions of an amplitude of 2.0% and a temperature of 60°C.
摩耗１員１１
アクロン摩耗試験機で荷重４．５ ｋｇ、傾斜角２５°
で測定した。１０００回転当りの摩耗損量（■）で表し
た。Wear 1 member 11 Akron abrasion tester, load 4.5 kg, angle of inclination 25°
It was measured with It is expressed as the amount of wear loss (■) per 1000 revolutions.
本発明の各実施例は第１表に示す基本配合のもを用い、
ゴム成分として各種のポリマーを変量用いて試料を作成
した。Each example of the present invention uses the basic formulation shown in Table 1,
Samples were prepared using varying amounts of various polymers as rubber components.
特性の測定結果を第２表に示す。Table 2 shows the measurement results of the characteristics.
本発明の実施例は、いずれも温度変化に伴いトレッドゴ
ム硬度の変化、ウェットグリップ性、耐摩耗性、及び転
勤抵抗性の総合的バランスがとれていることが認められ
る。It is recognized that in all of the examples of the present invention, changes in tread rubber hardness due to temperature changes, wet grip properties, abrasion resistance, and transfer resistance are comprehensively balanced.
尚、ｔａｎ δの値は転勤抵抗性と関係し、数値が小さ
い程転勤抵抗性に優れている。The value of tan δ is related to transfer resistance, and the smaller the value, the better the transfer resistance.
第１表
注１）３０℃トルエン溶液中の極限粘度〔η〕２．２、
スチレン含量２４％、ビニル含ｉ３９．５％、変性高分
子鎖の割合５６％、Table 1 Note 1) Intrinsic viscosity in toluene solution at 30°C [η] 2.2,
Styrene content 24%, vinyl content 39.5%, proportion of modified polymer chains 56%,
Claims (1)
．０未満であり、かつスチレン含量が２２％以上２８％
未満で、ブタジエン部分のビニル含量が３６％以上４２
％未満でかつ、３乃至４官能性の結合剤で変性された高
分子鎖の割合が４０重量％以上６５重量％以下である溶
液重合ＳＢＲを２５以上７０重量部未満、スチレン含量
が２２％以上２５％未満の乳化重合ＳＢＲを３０重量部
以上７５重量部未満、シス１、４ブタジエンゴムを２５
重量部未満でゴム成分の合計で１００重量部含有し、こ
のゴム成分１００重量部に対して平均粒子径が２０〜３
０μの範囲のカーボンブラックを４０重量部以上７０重
量部未満配合したことを特徴とするタイヤトレッドゴム
組成物。 ２）可塑材として、セバシン酸エステル、アジピン酸エ
ステル、脂肪酸エステルの内少なくとも１種以上を含む
特許請求の範囲第１項記載のトレッドゴム組成物。[Claims] 1) Intrinsic viscosity in toluene solution at 30°C is 1.7 or more3
．． less than 0, and the styrene content is 22% or more and 28%
and the vinyl content of the butadiene moiety is 36% or more 42
% and the proportion of polymer chains modified with a tri- or tetrafunctional binder is 25 to 70 parts by weight, and the proportion of polymer chains modified with a trifunctional or tetrafunctional binder is 25 to 70 parts by weight, and the styrene content is 22% or more. 30 parts by weight or more and less than 75 parts by weight of emulsion polymerized SBR less than 25%, 25 parts by weight of cis 1,4 butadiene rubber
Contains less than 100 parts by weight of rubber components in total, and has an average particle diameter of 20 to 3 parts by weight per 100 parts by weight of the rubber components.
A tire tread rubber composition comprising 40 parts by weight or more and less than 70 parts by weight of carbon black in the range of 0 μ. 2) The tread rubber composition according to claim 1, which contains at least one of sebacic acid ester, adipic acid ester, and fatty acid ester as a plasticizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18869784A JPS6166733A (en) | 1984-09-07 | 1984-09-07 | Rubber composition for tire tread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18869784A JPS6166733A (en) | 1984-09-07 | 1984-09-07 | Rubber composition for tire tread |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6166733A true JPS6166733A (en) | 1986-04-05 |
| JPH0481621B2 JPH0481621B2 (en) | 1992-12-24 |
Family
ID=16228234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18869784A Granted JPS6166733A (en) | 1984-09-07 | 1984-09-07 | Rubber composition for tire tread |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6166733A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62240337A (en) * | 1986-04-10 | 1987-10-21 | Sumitomo Chem Co Ltd | Rubber composition for tire tread |
| JPS6343937A (en) * | 1986-08-12 | 1988-02-25 | Mitsubishi Chem Ind Ltd | Rubber composition for tire tread |
| US5227424A (en) * | 1988-11-14 | 1993-07-13 | The Yokohama Rubber Co., Ltd. | Rubber composition for use as a tire tread |
| US6184283B1 (en) | 1997-12-24 | 2001-02-06 | Sumitomo Rubber Industries, Ltd. | Rubber composition for tread |
| KR100411739B1 (en) * | 2001-08-18 | 2003-12-18 | 금호타이어 주식회사 | Tread rubber composition improved wet traction |
| KR100426066B1 (en) * | 2001-09-07 | 2004-04-06 | 금호타이어 주식회사 | Tread rubber composition improved abrasion |
| KR100507770B1 (en) * | 1998-09-03 | 2005-11-21 | 한국타이어 주식회사 | Low Fuel Economy Tire Tread Rubber Composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58162603A (en) * | 1982-03-19 | 1983-09-27 | Japan Synthetic Rubber Co Ltd | Branched styrene-butadiene copolymer |
| JPS5945338A (en) * | 1982-09-07 | 1984-03-14 | Japan Synthetic Rubber Co Ltd | Butadiene polymer rubber composition |
| JPS60223840A (en) * | 1984-04-20 | 1985-11-08 | Sumitomo Rubber Ind Ltd | Tire tread rubber composition |
-
1984
- 1984-09-07 JP JP18869784A patent/JPS6166733A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58162603A (en) * | 1982-03-19 | 1983-09-27 | Japan Synthetic Rubber Co Ltd | Branched styrene-butadiene copolymer |
| JPS5945338A (en) * | 1982-09-07 | 1984-03-14 | Japan Synthetic Rubber Co Ltd | Butadiene polymer rubber composition |
| JPS60223840A (en) * | 1984-04-20 | 1985-11-08 | Sumitomo Rubber Ind Ltd | Tire tread rubber composition |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62240337A (en) * | 1986-04-10 | 1987-10-21 | Sumitomo Chem Co Ltd | Rubber composition for tire tread |
| JPS6343937A (en) * | 1986-08-12 | 1988-02-25 | Mitsubishi Chem Ind Ltd | Rubber composition for tire tread |
| US5227424A (en) * | 1988-11-14 | 1993-07-13 | The Yokohama Rubber Co., Ltd. | Rubber composition for use as a tire tread |
| US6184283B1 (en) | 1997-12-24 | 2001-02-06 | Sumitomo Rubber Industries, Ltd. | Rubber composition for tread |
| KR100507770B1 (en) * | 1998-09-03 | 2005-11-21 | 한국타이어 주식회사 | Low Fuel Economy Tire Tread Rubber Composition |
| KR100411739B1 (en) * | 2001-08-18 | 2003-12-18 | 금호타이어 주식회사 | Tread rubber composition improved wet traction |
| KR100426066B1 (en) * | 2001-09-07 | 2004-04-06 | 금호타이어 주식회사 | Tread rubber composition improved abrasion |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0481621B2 (en) | 1992-12-24 |
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