JPH0815843B2 - Pneumatic tire with improved durability - Google Patents
Pneumatic tire with improved durabilityInfo
- Publication number
- JPH0815843B2 JPH0815843B2 JP60079180A JP7918085A JPH0815843B2 JP H0815843 B2 JPH0815843 B2 JP H0815843B2 JP 60079180 A JP60079180 A JP 60079180A JP 7918085 A JP7918085 A JP 7918085A JP H0815843 B2 JPH0815843 B2 JP H0815843B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- rubber
- parts
- sulfur
- bismaleimide compound
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は空気入りタイヤ、詳しくは耐久性の改善され
た高運動性空気入りタイヤに関するものである。Description: TECHNICAL FIELD The present invention relates to a pneumatic tire, and more particularly to a highly dynamic pneumatic tire having improved durability.
最近、自動車の性能向上や高速道路網の発達に伴な
い、高運動性能を備えた空気入りタイヤの要求が強ま
り、特にグリツプ性能は重要な要求特性であり、加速性
能やブレーキ性能に代表される。したがつてこれらの特
性が高いタイヤほどより高速でかつより正確に走行する
ことができる。Recently, the demand for pneumatic tires with high dynamic performance has increased with the improvement of automobile performance and the development of highway networks. Particularly, grip performance is an important required characteristic, and is represented by acceleration performance and brake performance. . Therefore, a tire having these higher characteristics can travel at a higher speed and more accurately.
従来、高グリツプ性能を得るためには、ドレツドゴム
組成物にポリマーとして高スチレン含有率のスチレン−
ブタジエン共重合ゴム（ガラス転移温度の高いゴム）を
選択するか、またはオイル及びカーボンブラツクを高充
填した配合系を選択する必要があり、トレツドゴム組成
物のヒステリシスロスを大きくすることが必要であつ
た。このため、タイヤが高速で走行する場合、ヒステリ
シスロスのためタイヤが発熱し、高速走行時のタイヤ温
度上昇に伴ないトレツドゴムにブロー（blow）が発生
し、ゴム弾性が失なわれ、グリツプ性能や耐摩耗性能が
著しく低下してしまういわゆるブローアウト（blow ou
t）現象を引き起すという欠点があつた。Conventionally, in order to obtain high grip performance, a styrene-containing styrene-containing polymer having a high styrene content is used as a polymer in the dred rubber composition.
It was necessary to select a butadiene copolymer rubber (a rubber having a high glass transition temperature) or a compounding system in which oil and carbon black were highly filled, and it was necessary to increase the hysteresis loss of the tread rubber composition. . For this reason, when the tire travels at high speed, the tire heats up due to hysteresis loss, blows occur in the tread rubber as the tire temperature rises at high speed, rubber elasticity is lost, and grip performance and The so-called blow out (blow ou)
t) There is a drawback that it causes the phenomenon.
〔発明が解決しようとする問題点〕 このように従来のトレツドゴム組成物では、自動車の
性能向上に対応することが難かしく、特にグリツプ性能
と耐摩耗性を損なうことなく高い耐久性を得ることがで
きなかつた。本発明はこの問題点を解決することを目的
とする。[Problems to be Solved by the Invention] As described above, it is difficult to improve the performance of automobiles by using the conventional tread rubber composition, and particularly, it is possible to obtain high durability without impairing the grip performance and the wear resistance. I couldn't do it. The present invention aims to solve this problem.
本発明は、加硫剤として通常使用される硫黄以外に、
従来よりハイパロンのようなクロロスルホン化ポリエチ
レンなどのパーオキサイド架橋の助剤やポリイソプレン
ゴムをベースとした長時間加硫や高温加硫（「ポリマー
の友」1975年７月P327、1977年４月P484、1979年９月P5
90、1981年10月P592〜P593、1982年９月P533）に使用例
が見られるビスマレイミド化合物が有効であること、し
かも硫黄とビスマレイミド化合物の割合、及び加硫促進
剤とビスマレイミド化合物の割合によつて、ブローアウ
ト性能は勿論のこと、タイヤとして要求される諸特性が
大きく変わることの発見に基ずくものである。The present invention, in addition to sulfur usually used as a vulcanizing agent,
Traditionally, long-term vulcanization and high temperature vulcanization based on peroxide crosslinking aids such as chlorosulfonated polyethylene such as Hypalon and polyisoprene rubber (“Polymer Friend” July 1975 P327, April 1977) P484, September 1979 P5
90, October 1981, P592 to P593, September 1982, P533). Examples of bismaleimide compounds are effective, and the ratio of sulfur and bismaleimide compound, and the vulcanization accelerator and bismaleimide compound The ratio is based on the discovery that not only the blowout performance, but also the various characteristics required of the tire are significantly changed.
すなわち、本発明はスチレン−ブタジエン共重合ゴム
若しくはスチレン−ブタジエン共重合ゴム30重量部以上
と天然ゴム、合成ポリイソプレンゴム、ポリブタジエン
ゴム、ブチルゴム、ハロゲン化ブチルゴムからなる群よ
り選択された少なくとも１種以上のゴム70重量部以下と
からなるブレンドゴム100重量部に対して、加硫促進剤
として、ジベンゾチアジルジスルフイド、Ｎ−シクロヘ
キシル−２−ベンゾチアジルスルフエンアミド、Ｎ−オ
キシジエチレン−２−ベンゾチアジルスルフエンアミ
ド、N,N−ジシクロヘキシル−２−ベンゾチアジルスル
フエンアミド、Ｎ−tert−ブチル−２−ベンゾチアジル
スルフエンアミド、テトラメチルチウラムジスルフイ
ド、テトラエチルチウラムジスルフイド、テトラブチル
チウラムジスルフイド、テトラメチルチウラムモノスル
フイド、テトラブチルチウラムモノスルフイドからなる
群より選択された少なくとも１種の化合物0.3〜３重量
部、加硫剤として硫黄0.3〜３重量部、および下記の一
般式（Ｉ）、 （たゞし、Ｒはフエニレン基、ナフチレン基、−（C
H2）ｎ−基、ｎは２〜６の整数を表わす） で表わされるビスマレイミド化合物0.1〜1.5重量部を配
合してなるゴム組成物であつて、硫黄／ビスマレイミド
化合物の重量比が1/1〜3/1、加硫促進剤／ビスマレイミ
ド化合物の重量比が1/1〜3/1であるゴム組成物をトレツ
ドに使用したことを特徴とする耐久性の改善された性空
気入りタイヤに関するものである。That is, the present invention is at least one or more selected from the group consisting of 30 parts by weight or more of styrene-butadiene copolymer rubber or styrene-butadiene copolymer rubber and natural rubber, synthetic polyisoprene rubber, polybutadiene rubber, butyl rubber, halogenated butyl rubber. 100 parts by weight of a blended rubber consisting of 70 parts by weight or less of the above rubber, as a vulcanization accelerator, dibenzothiazyl disulfide, N-cyclohexyl-2-benzothiazyl sulfenamide, N-oxydiethylene-2. -Benzothiazyl sulfenamide, N, N-dicyclohexyl-2-benzothiazyl sulfenamide, N-tert-butyl-2-benzothiazyl sulfenamide, tetramethylthiuram disulfide, tetraethyl thiuram disulfide , Tetrabutyl thiuram disulfide, tetra 0.3 to 3 parts by weight of at least one compound selected from the group consisting of tilthiuram monosulfide and tetrabutylthiuram monosulfide, 0.3 to 3 parts by weight of sulfur as a vulcanizing agent, and the following general formula (I ), (However, R is phenylene group, naphthylene group,-(C
H 2 ) n -group, n is an integer of 2 to 6), and a rubber composition containing 0.1 to 1.5 parts by weight of a bismaleimide compound represented by the formula: wherein the sulfur / bismaleimide compound weight ratio is 1 / 1 to 3/1, a rubber composition having a vulcanization accelerator / bismaleimide compound weight ratio of 1/1 to 3/1 was used in a tread. It concerns tires.
本発明においては、スチレン−ブタジエン共重合ゴム
を必須成分とするが、特に高グリツプ性能を得るために
はスチレン含有率が30重量％以上好ましくは35重量％以
上の高スチレン含有率スチレン−ブタジエン共重合ゴム
が好ましく、この場合、該高スチレン−ブタジエン共重
合ゴム単独であつても、該ゴム30重量部以上と、スチレ
ン含有率30重量％以下、好ましくは25重量％以下の低ス
チレン含有率スチレン−ブタジエン共重合ゴム70重量部
以下のブレンドゴムであつてもよい。また本発明におい
てはスチレン−ブタジエン共重合ゴム30重量部以上と、
他に目的用途に応じて天然ゴム、合成ポリイソプレンゴ
ム、ポリブタジエンゴム、ブチルゴム、ハロゲン化ブチ
ルゴムを１種以上適宜併用することができる。In the present invention, a styrene-butadiene copolymer rubber is used as an essential component, but in order to obtain particularly high grip performance, the styrene content is 30% by weight or more, preferably 35% by weight or more. Polymerized rubber is preferable, and in this case, even if the high styrene-butadiene copolymer rubber alone, 30 parts by weight or more of the rubber and a low styrene content styrene of 30% by weight or less, preferably 25% by weight or less. -Butadiene copolymer rubber may be a blend rubber of 70 parts by weight or less. In the present invention, styrene-butadiene copolymer rubber 30 parts by weight or more,
Besides, one or more kinds of natural rubber, synthetic polyisoprene rubber, polybutadiene rubber, butyl rubber, and halogenated butyl rubber can be appropriately used in combination depending on the intended use.
本発明においては加硫促進剤としてジベンゾチアジル
スルフイド（DM）、Ｎ−シクロヘキシル−２−ベンゾチ
アジルスルフエンアミド（CZ）、Ｎ−オキシジエチレン
−２−ベンゾチアジルスルフエンアミド（NOBS）、N,N
−ジシクロヘキシル−２−ベンゾチアジルスルフエンア
ミド（DZ）、Ｎ−tert−ブチル−２−ベンゾチアジルス
ルフエンアミド（NS）、テトラメチルチウラムジスルフ
イド（TMTD）、テトラエチルチウラムジスルフイド（TE
TD）、テトラブチルチウラムジスルフイオ（TBTD）、テ
トラメチルチウラムモノスルフイド（TMTM）、テトラブ
チルチウラムモノスルフイド（TBTM）からなる群より選
択された少なくとも１種以上の加硫促進剤が使用され、
好ましくはDMとスルフエンアミド系促進剤及び／又はチ
ウラム系促進剤の併用が好ましい。配合量は0.3〜３重
量部である。配合量は0.3重量部未満の場合は加硫剤の
促進効果がなく３重量部を越えると、もはや増量効果が
余り期待できないばかりでなく、スコーチタイムが短か
くなり好ましくない。In the present invention, as a vulcanization accelerator, dibenzothiazyl sulfide (DM), N-cyclohexyl-2-benzothiazyl sulfenamide (CZ), N-oxydiethylene-2-benzothiazyl sulfenamide (NOBS) , N, N
-Dicyclohexyl-2-benzothiazyl sulfenamide (DZ), N-tert-butyl-2-benzothiazyl sulfenamide (NS), tetramethyl thiuram disulfide (TMTD), tetraethyl thiuram disulfide (TE
TD), tetrabutyl thiuram disulfio (TBTD), tetramethyl thiuram monosulfide (TMTM), tetrabutyl thiuram monosulfide (TBTM), and at least one vulcanization accelerator selected from the group consisting of Is used
It is preferable to use DM in combination with a sulfenamide accelerator and / or a thiuram accelerator. The compounding amount is 0.3 to 3 parts by weight. If the amount is less than 0.3 parts by weight, the vulcanizing agent has no accelerating effect, and if it exceeds 3 parts by weight, not only the effect of increasing the amount cannot be expected anymore, but also the scorch time becomes short, which is not preferable.
本発明においては、加硫剤として硫黄と前記一般式
（Ｉ）で表わされるビスマレイミド化合物を用いるが、
このビスマレイミド化合物の具体例としてはN,N′−ｍ
−フエニレンビスマレイミド、N,N′−1,5−ナフチレン
ビスマレイミド、N,N′−エチレンビスマレイミド、N,
N′−テトラメチレンビスマレイミド、N,N′−ヘキサメ
チレンビスマレイミド等がある。硫黄の配合量としては
0.3〜３重量部、好ましくは0.3〜2.5重量部であり、0.3
重量部未満では添加の効果がなく３重量部を越えると、
ゴム組成物の硬度が高くなりすぎてグリツプ性能が悪化
するため好ましくない。また、ビスマレイミド化合物の
配合量は0.1〜1.5重量部であり、0.1重量部未満ではブ
ローアウト性が向上せず、1.5重量部を越えると加硫後
未反応のビスマレイミドが残つてしまうため走行中期か
ら後期にかけて、ゴム組成物の硬度、モジユラスが高く
なりすぎ、やはりグリツプ性能が悪化してしまい好まし
くない。In the present invention, sulfur and a bismaleimide compound represented by the general formula (I) are used as a vulcanizing agent.
Specific examples of this bismaleimide compound include N, N'-m.
-Phenylene bismaleimide, N, N'-1,5-naphthylene bismaleimide, N, N'-ethylene bismaleimide, N,
There are N'-tetramethylene bismaleimide, N, N'-hexamethylene bismaleimide and the like. As for the amount of sulfur
0.3 to 3 parts by weight, preferably 0.3 to 2.5 parts by weight, 0.3
If it is less than 3 parts by weight, the effect of the addition is not obtained, and if it exceeds 3 parts by weight,
It is not preferable because the hardness of the rubber composition becomes too high and the grip performance deteriorates. The amount of the bismaleimide compound is 0.1 to 1.5 parts by weight.If the amount is less than 0.1 parts by weight, the blow-out property will not be improved, and if it exceeds 1.5 parts by weight, unreacted bismaleimide will remain after the vulcanization. From the middle stage to the latter stage, the hardness and modulus of the rubber composition become too high, and the grip performance is deteriorated, which is not preferable.
本発明においては、上記の加硫促進剤、硫黄、ビスマ
レイミド化合物の併用比が極めて重要である。すなわち
加硫促進剤／ビスマレイミド化合物の重量比は1/1〜3/1
である。重量比が1/1より加硫促進剤の量が少ない場合
は、ビスマレイミド化合物の架橋が十分に生成されず、
ブローアウト性能が向上せず好ましくなく、3/1より加
硫促進剤の量が多い場合はスコーチタイムが短くなり、
押出し作業性等の工場作業性が悪化するため好ましくな
い。また硫黄／ビスマレイミド化合物の重量比は1/1〜3
/1、好ましくは1/1〜2.5/1である。重量比が1/1より硫
黄が少ない場合は耐摩耗性が悪化するため好ましくな
く、3/1より硫黄が多い場合はビスマレイミド化合物の
併用効果がなくなりブローアウト性能が向上せず好まし
くない。In the present invention, the combined ratio of the above-mentioned vulcanization accelerator, sulfur and bismaleimide compound is extremely important. That is, the vulcanization accelerator / bismaleimide compound weight ratio is 1/1 to 3/1.
Is. When the amount of the vulcanization accelerator is less than 1/1 by weight, the bismaleimide compound is not sufficiently crosslinked,
Blowout performance is not improved and it is not preferable, and when the amount of vulcanization accelerator is larger than 3/1, the scorch time becomes shorter,
It is not preferable because the workability in the factory such as the workability in extrusion is deteriorated. The sulfur / bismaleimide compound weight ratio is 1/1 to 3
/ 1, preferably 1/1 to 2.5 / 1. When the weight ratio is less than 1/1, the sulfur is unfavorable because the wear resistance is deteriorated. When the sulfur is more than 3/1, the bismaleimide compound is not effective and the blowout performance is not improved.
また本発明においては上記加硫剤、加硫促進剤以外
に、カーボンブラツク等の補強剤、アロマオイル等のプ
ロセスオイルや可塑剤、老化防止剤、加硫促進助剤等の
通常ゴム工業で用いられる配合剤を必要に応じて適宜配
合してもよい。Further, in the present invention, in addition to the above-mentioned vulcanizing agent and vulcanization accelerator, a reinforcing agent such as carbon black, a process oil such as aroma oil or a plasticizer, an antiaging agent, a vulcanization accelerator auxiliary agent or the like used in the usual rubber industry. You may mix | blend the compounding agent used suitably as needed.
以上詳述したように、本発明による空気入りタイヤ
は、トレツドを上述の構成からなるゴム組成物で構成し
たため耐摩耗性、グリツプ性能を損うことなく、耐久性
が著しく改善される。As described in detail above, in the pneumatic tire according to the present invention, since the tread is made of the rubber composition having the above-mentioned constitution, the durability is remarkably improved without impairing the wear resistance and the grip performance.
以下比較例と実施例により本発明を詳細に説明する。 The present invention will be described in detail below with reference to comparative examples and examples.
実施例１〜７、比較例１〜４ 第１表に示した配合内容による各種ゴム組成物を作成
し、加硫後、ブローアウト性、更にこれらゴム組成物を
タイヤサイズ195/60HR14のトレツドに使用して高速耐久
性及び耐摩耗性を評価した。結果を第１表に示す。Examples 1 to 7 and Comparative Examples 1 to 4 Various rubber compositions having the compounding contents shown in Table 1 were prepared, and after vulcanization, blowout properties were obtained. Further, these rubber compositions were made into a tire size 195/60 HR14 tire. Used to evaluate high speed durability and wear resistance. The results are shown in Table 1.
尚、評価方法は以下の通りである。 The evaluation method is as follows.
（ブローアウト性） グツドリツチ式フレクソメーターを用い動的圧縮によ
りゴムを発熱させて行き、泡が発生し始めた時の温度を
評価。(Blowout property) A rubber was heated by dynamic compression using a guddrichch flexometer, and the temperature at which bubbles started to be generated was evaluated.
（高速耐久性） タイヤをドラム上で一定荷重条件で、最初81km/Hの速
度にて２時間慣らし走行後、放冷して121km/Hで30分間
走行させた後、30分毎に8km/H速度を増加させトレツド
がブローアウトした時の速度を評価し、比較例１を100
として指数表示した。値が大なる程良好。(High-speed durability) The tires were conditioned at a constant load on the drum for the first 2 hours at a speed of 81km / H, then allowed to cool and run at 121km / H for 30 minutes, then at 8km / h every 30 minutes. The H speed was increased and the speed when the tread was blown out was evaluated.
Is displayed as an index. The larger the value, the better.
（耐摩耗性） 実車にて50,000km走行後、残溝を測定し、耐摩耗性を
評価した。比較例１を100として指数表示した。値が大
なる程良好。(Abrasion resistance) After running 50,000 km in an actual vehicle, the residual groove was measured to evaluate the abrasion resistance. The comparative example 1 was set to 100 and displayed as an index. The larger the value, the better.
第１表から明らかなように、実施例で示した本発明に
よる空気入りタイヤはトレツドのブローアウト性が改良
されることにより高速耐久性が著しく改良されている。 As is apparent from Table 1, the pneumatic tires according to the present invention shown in the examples have the high speed durability remarkably improved due to the improved blowout property of the tread.
Claims (3)
該スチレン−ブタジエン共重合ゴム30重量部以上と、天
然ゴム、合成ポリイソプレンゴム、ポリブタジエンゴ
ム、ブチルゴム、ハロゲン化ブチルゴムからなる群より
選択された少なくとも１種以上のゴム70重量部以下とか
らなるブレンドゴム100重量部に対して、加硫促進剤と
して、ジベンゾチアジルジスルフイド、Ｎ−シクロヘキ
シル−２−ベンゾチアジルスルフエンアミド、Ｎ−オキ
シジエチレン−２−ベンゾチアジルスルフエンアミド、
N,N−ジシクロヘキシル−２−ベンゾチアジルスルフエ
ンアミド、Ｎ−tert−ブチル−２−ベンゾチアジルスル
フエンアミド、テトラメチルチウラムジスルフイド、テ
トラエチルチウラムジスルフイド、テトラブチルチウラ
ムジスルフイド、テトラメチルチウラムモノスルフイ
ド、テトラブチルチウラムモノスルフイドからなる群よ
り選択された少なくとも１種の化合物0.3〜３重量部、
加硫剤として硫黄0.3〜３重量部、 及び一般式 （ここでＲはフエニレン基、ナフチレン基、−（CH2）
ｎ−基を表わし、ｎは２〜６の整数） で表わされるビスマレイミド化合物0.1〜1.5重量部を配
合してなるゴム組成物であつて硫黄／ビスマレイミド化
合物の重量比が1/1〜3/1、加硫促進剤／ビスマレイミド
化合物の重量比が1/1〜3/1であるゴム組成物をトレツド
に使用したことを特徴とする耐久性の改善された高運動
性空気入りタイヤ。1. A styrene-butadiene copolymer rubber or at least 30 parts by weight of the styrene-butadiene copolymer rubber, and at least one selected from the group consisting of natural rubber, synthetic polyisoprene rubber, polybutadiene rubber, butyl rubber and halogenated butyl rubber. As a vulcanization accelerator, dibenzothiazyl disulfide, N-cyclohexyl-2-benzothiazyl sulfenamide, N-oxydiethylene is added to 100 parts by weight of a blended rubber consisting of 70 parts by weight or more of at least one rubber. -2-benzothiazyl sulfenamide,
N, N-dicyclohexyl-2-benzothiazyl sulfenamide, N-tert-butyl-2-benzothiazyl sulfenamide, tetramethyl thiuram disulfide, tetraethyl thiuram disulfide, tetrabutyl thiuram disulfide, 0.3 to 3 parts by weight of at least one compound selected from the group consisting of tetramethylthiuram monosulfide and tetrabutylthiuram monosulfide,
0.3 to 3 parts by weight of sulfur as a vulcanizing agent, and a general formula (Here, R is a phenylene group, a naphthylene group,-(CH 2 )
A rubber composition comprising 0.1 to 1.5 parts by weight of a bismaleimide compound represented by the formula n -group, where n is an integer of 2 to 6, and having a sulfur / bismaleimide compound weight ratio of 1/1 to 3 A highly dynamic pneumatic tire with improved durability, which is characterized in that a rubber composition having a vulcanization accelerator / bismaleimide compound weight ratio of 1/1 to 3/1 was used for a tread.
／ビスマレイミドの重量比が1/1〜2.5/1である特許請求
の範囲第１項記載の空気入りタイヤ。2. The pneumatic tire according to claim 1, wherein the compounding amount of sulfur is 0.3 to 2.5 parts by weight and the weight ratio of sulfur / bismaleimide is 1/1 to 2.5 / 1.
2重量部でかつ硫黄／ビスマレイミド化合物の重量比が
1.2/1〜3/1、加硫促進剤／ビスマレイミド化合物の重量
比が1.2/1〜3/1である特許請求の範囲第１項記載の空気
入りタイヤ。3. The amount of the bismaleimide compound added is 0.25 to 1.
2 parts by weight and the weight ratio of sulfur / bismaleimide compound is
The pneumatic tire according to claim 1, wherein the weight ratio of vulcanization accelerator / bismaleimide compound is 1.2 / 1 to 3/1 and 1.2 / 1 to 3/1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60079180A JPH0815843B2 (en) | 1985-04-16 | 1985-04-16 | Pneumatic tire with improved durability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60079180A JPH0815843B2 (en) | 1985-04-16 | 1985-04-16 | Pneumatic tire with improved durability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61238501A JPS61238501A (en) | 1986-10-23 |
| JPH0815843B2 true JPH0815843B2 (en) | 1996-02-21 |
Family
ID=13682775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60079180A Expired - Fee Related JPH0815843B2 (en) | 1985-04-16 | 1985-04-16 | Pneumatic tire with improved durability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0815843B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0651805B2 (en) * | 1987-02-20 | 1994-07-06 | 株式会社ブリヂストン | Rubber-code composite |
| JPS63264972A (en) * | 1987-04-22 | 1988-11-01 | 株式会社ブリヂストン | Rubber reinforcing fiber material |
| JPH01118547A (en) * | 1987-11-02 | 1989-05-11 | Bridgestone Corp | Rubber composition |
| JP5211489B2 (en) * | 2007-01-26 | 2013-06-12 | 横浜ゴム株式会社 | Rubber composition for tire tread |
| EP2810985B1 (en) * | 2012-01-30 | 2017-04-05 | Bridgestone Corporation | Vibration-damping rubber composition, crosslinked vibration-damping rubber composition, and vibration-damping rubber |
| JP5940399B2 (en) * | 2012-07-18 | 2016-06-29 | 住友ゴム工業株式会社 | Rubber-cord composite and pneumatic tire using the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56149445A (en) * | 1980-04-22 | 1981-11-19 | Bridgestone Corp | Improved pneumatic tire |
| JPS59109541A (en) * | 1982-12-15 | 1984-06-25 | Bando Chem Ind Ltd | Chloroprene rubber composition |
-
1985
- 1985-04-16 JP JP60079180A patent/JPH0815843B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61238501A (en) | 1986-10-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |