JP2782073B2 - Radial ply tires for passenger cars - Google Patents
Radial ply tires for passenger carsInfo
- Publication number
- JP2782073B2 JP2782073B2 JP1020880A JP2088089A JP2782073B2 JP 2782073 B2 JP2782073 B2 JP 2782073B2 JP 1020880 A JP1020880 A JP 1020880A JP 2088089 A JP2088089 A JP 2088089A JP 2782073 B2 JP2782073 B2 JP 2782073B2
- Authority
- JP
- Japan
- Prior art keywords
- tire
- carbon black
- rubber
- radial ply
- rubber composition
- 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
- B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
- B60C13/002—Protection against exterior elements
-
- 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
-
- 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
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/08—Electric-charge-dissipating arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、保存中のみならず、走行中に塵埃や泥など
により汚染されることのない乗用車用ラジアルプライタ
イヤに関するものである。Description: TECHNICAL FIELD The present invention relates to a radial ply tire for a passenger car which is not contaminated by dust or mud during traveling as well as during storage.
従来、空気入りタイヤには、その走行性能、操縦性
能、乗り心地性能等の向上、改良など様々な要望がなさ
れてきたが、今日ではさらに多様化した要望がなされて
きているのが現状である。たとえばこのような要望の一
つに乗用車用ラジアルプライタイヤのファッション化が
あり、たとえばタイヤトレッドパターンの意匠化、トレ
ッド面へのホワイトレターの導入など種々の提案があ
る。Conventionally, various requests have been made for pneumatic tires, such as improvement and improvement of running performance, steering performance, riding comfort performance, and the like.Today, more diversified requests have been made. . For example, one of such demands is the fashioning of radial ply tires for passenger cars. For example, there are various proposals such as designing a tire tread pattern and introducing a white letter on a tread surface.
しかしながら、これらのタイヤのファッション化は、
そのファッション化された外観を長期間にわたって維持
することが難しく、かつその管理が煩雑であるという問
題がある。たとえば走行中や走行後並びに長期の保管中
の塵埃や泥等による汚染、特にサイドウォール部の汚染
を防止し、新品時のファッション性をそのまま維持する
ことは必ずしも容易ではない。However, the fashion of these tires,
There is a problem that it is difficult to maintain the fashioned appearance over a long period of time, and that the management is complicated. For example, it is not always easy to prevent contamination due to dust and mud during traveling, after traveling, and during long-term storage, in particular, contamination of the side wall portion, and to maintain the fashionability when new.
それにもかかわらず、上記のようなタイヤの汚染防止
に関する要望は、最終ユーザーのみならず、店頭にタイ
ヤを展示するタイヤ営業業者からも強く求められてい
る。Nevertheless, demands for the prevention of tire contamination as described above are strongly demanded not only by end users but also by tire dealers who exhibit tires at stores.
本発明の目的は、従来のタイヤの洗浄やタイヤ用ワッ
クス類の塗布などのように、手数を要し、煩雑な上記汚
染の除去手段に代えて、汚染そのものが生じ難く、かつ
汚染した場合の除去が簡単であり、汚染除去により、タ
イヤの外観が損なわれたり、傷が付き、商品価値を損な
う危険性のない乗用車用ラジアルプライタイヤを提供す
ることであり、他の目的は、タイヤ走行中や走行後並び
に保管中におけるタイヤ、特にそのサイドウォール部に
対する塵埃や泥などの付着、蓄積を防止乃至抑制し、タ
イヤのファッション性能を長期間にわたって維持するこ
とのできる乗用車用ラジアルプライタイヤを提供するこ
とである。An object of the present invention is to replace the complicated and complicated means for removing contamination, such as conventional tire cleaning and tire wax application, in which the contamination itself is unlikely to occur, and when contamination occurs. It is an object of the present invention to provide a radial ply tire for a passenger car which is easy to remove, and has no risk of deteriorating or scratching the tire due to decontamination and deteriorating its commercial value. Provided is a radial ply tire for a passenger car that can prevent or suppress the adhesion and accumulation of dust and mud on a tire, particularly after running and during storage, particularly on a sidewall portion thereof, and maintain the fashion performance of the tire for a long period of time. That is.
このような本発明の目的は、導電性カーボンブラック
を含有する体積固有抵抗が104Ωcm以下である加硫可能
なゴム組成物によりタイヤのサイドトレッドの少なくと
も表面部を構成することによって達成することができ
る。The object of the present invention can be achieved by forming at least the surface portion of the tire side tread with a vulcanizable rubber composition having a volume resistivity of 10 4 Ωcm or less containing conductive carbon black. Can be.
本発明の特徴は、乗用車用ラジアルプライタイヤのサ
イドトレッドの少なくとも表面部が104Ωcm以下という
低い体積固有抵抗のゴム組成物から構成されていること
である。104Ωcm以下という体積固有抵抗値はエチレン
・プロピレン・ジエン系ゴムやハロゲン化ブチルゴム等
の通常のタイヤ用ゴムの体積固有抵抗が約108Ωcm程度
であり、また従来のタイヤのサイドトレッドの体積固有
抵抗が小さいもので、約106Ωcm程度であることを考え
ると、著しく小さい値であって高導電性であることが判
る。A feature of the present invention is that at least the surface portion of the side tread of the radial ply tire for a passenger car is made of a rubber composition having a low volume resistivity of 10 4 Ωcm or less. The volume specific resistance of 10 4 Ωcm or less is about 10 8 Ωcm, which is about 10 8 Ωcm, and the volume of normal tire rubber such as ethylene-propylene-diene rubber or halogenated butyl rubber is about 10 8 Ωcm. Considering that the specific resistance is small and about 10 6 Ωcm, it is understood that the value is extremely small and the conductivity is high.
本発明タイヤのサイドトレッドの高導電性は、窒素吸
着表面積（以下、N2SAと略す）が100〜150m2/g,ジブチ
ルフタレート吸油量（以下、DBP吸油量と略す）が90〜1
30ml/100g,pHが7.0〜8.0および揮発分（％）が1.0〜3.0
である導電性カーボンブラックを配合したゴム組成物か
ら構成することにより得られる。また、ゴム組成物に対
する導電性カーボンブラックの配合量はゴム100重量部
当たり５〜25重量部の範囲であることが好ましい。The high conductivity of the side tread of the tire of the present invention is such that the nitrogen adsorption surface area (hereinafter, abbreviated as N 2 SA) is 100 to 150 m 2 / g, and the dibutyl phthalate oil absorption (hereinafter, abbreviated as DBP oil absorption) is 90 to 1,
30ml / 100g, pH 7.0-8.0 and volatile (%) 1.0-3.0
Is obtained from a rubber composition containing conductive carbon black. The amount of the conductive carbon black to be added to the rubber composition is preferably in the range of 5 to 25 parts by weight per 100 parts by weight of the rubber.
ここでN2SA、DBP吸油量、着色力、pHおよび揮発分
（％）はそれぞれ、次の測定方法により測定される値で
ある。Here, N 2 SA, DBP oil absorption, coloring power, pH, and volatile content (%) are values measured by the following measurement methods, respectively.
N2SA:ASTM−Ｄ−3037−78に規定されている“Surface
Area by Nitrogen Adsorption"Method Ｃに準じて
測定し、m2/g単位で表した値である。N 2 SA: “Surface specified in ASTM-D-3037-78
Area by Nitrogen Adsorption "is a value measured in accordance with Method C and expressed in units of m 2 / g.
DBP吸油量： JIS−Ｋ−6221（1982）に規定されている「ゴム用カ
ーボンブラック試験方法」6.1.2（１）Ａ法に準じて測
定し、ml/100g単位で表わした値である。DBP oil absorption: A value measured in accordance with the method of 6.1.2 (1) A for "Testing methods for carbon black for rubber" specified in JIS-K-6221 (1982), and expressed in units of ml / 100 g.
pH: JIS−Ｋ−6221（1982）に規定されている「ゴム用カ
ーボンブラック試験方法」6.4.2法に準じて測定した値
である。pH: It is a value measured according to 6.4.2 method of "Testing method of carbon black for rubber" specified in JIS-K-6221 (1982).
揮発分（％）： JIS−Ｋ−6221（1982）に規定されている「ゴム用カ
ーボンブラック試験方法」6.4.1法に準じて測定した値
である。単位は％で表される。Volatile content (%): It is a value measured according to the 6.4.1 method of "Test method for carbon black for rubber" specified in JIS-K-6221 (1982). The unit is expressed in%.
本発明の体積固有抵抗が104Ωcm以下という特性を有
するタイヤのサイドトレッド用ゴム組成物は、従来の補
強用カーボンブラックだけを配合したゴム組成物からは
得られるものではない。上記特性を満足する本発明の導
電性カーボンブラックを配合することにより、はじめて
得ることができる。The rubber composition for a side tread of a tire having the characteristic that the volume resistivity is 10 4 Ωcm or less according to the present invention cannot be obtained from a conventional rubber composition containing only reinforcing carbon black. It can be obtained for the first time by blending the conductive carbon black of the present invention satisfying the above characteristics.
ここで導電性カーボンブラックのN2SAが100〜150m2/g
の範囲外であったり、DBP吸油量が90〜130ml/100gの範
囲外の場合は、本発明の目的とする体積固有抵抗が104
Ω・cm以下のゴム組成物にすることが困難になる。ま
た、たとえば耐オゾン性や耐クラック性等のゴム組成物
の物性が低下し、タイヤのサイドトレッド用としての性
能が低下するため好ましくない。さらに導電性カーボン
ブラックの配合量が５重量部よりも少ないと、体積固有
抵抗が104Ωcm以下のゴム組成物が得られなくなるし、2
5重量部を越えると、良好な機械的物性を有するサイド
トレッド用ゴム組成物が得られ難くなるため好ましくな
い。Here, the conductive carbon black N 2 SA is 100 to 150 m 2 / g
If the DBP oil absorption is out of the range of 90 to 130 ml / 100 g, the volume resistivity targeted by the present invention is 10 4
It becomes difficult to make a rubber composition of Ω · cm or less. Further, the physical properties of the rubber composition such as ozone resistance and crack resistance are reduced, and the performance of the tire for use as a side tread is reduced, which is not preferable. Further, when the amount of the conductive carbon black is less than 5 parts by weight, a rubber composition having a volume resistivity of 10 4 Ωcm or less cannot be obtained.
If the amount exceeds 5 parts by weight, it becomes difficult to obtain a rubber composition for a side tread having good mechanical properties, which is not preferable.
本発明のゴム組成物を構成するゴム成分としては、タ
イヤのサイドトレッド用として使用される公知の各種ゴ
ム成分、たとえば天然ゴム、ポリイソプレンゴム、ポリ
ブタジエンゴム、スチレン・ブタジエン共重合体ゴムな
どまたはこれらの混合物が用いられるが、ポリブタジエ
ンゴムは耐屈曲性の点から30重量部以上を配合するのが
よい。The rubber component constituting the rubber composition of the present invention includes various known rubber components used for tire side treads, such as natural rubber, polyisoprene rubber, polybutadiene rubber, styrene / butadiene copolymer rubber, and the like. However, the polybutadiene rubber is preferably blended in an amount of 30 parts by weight or more from the viewpoint of bending resistance.
また、本発明のゴム組成分中には上記導電性カーボン
ブラックとは別に、通常の補強用カーボンブラックも配
合されるが、この補強用カーボンブラックとしては、ゴ
ムに対する補強効果を有し、導電性を阻害しないもの、
たとえば、HAF,FEF,GPF等の破断強度や破断伸びを向上
し、耐屈曲疲労性を向上させる、N2SAが20〜90m2/gおよ
びDBP吸油量が70〜130ml/100gの範囲内のものがよく、
その配合量も30〜65重量部の範囲内で適宜選定される。In addition, apart from the conductive carbon black, a normal reinforcing carbon black is also blended in the rubber composition of the present invention. The reinforcing carbon black has a reinforcing effect on rubber, and has a conductive effect. Do not interfere with
For example, HAF, FEF, improved breaking strength and elongation at break, such as GPF, improve the bending fatigue resistance, N 2 SA is 20~90m 2 / g and a DBP oil absorption in the range of 70~130ml / 100g Things are good,
The compounding amount is appropriately selected within the range of 30 to 65 parts by weight.
また、これら２種のカーボンブラックのゴムへの配合
方法も特に限定されるものではなく、それぞれ別々にま
たは両者を一緒に（事前に混合した後または同時に）ゴ
ム中に添加、混合することができる。The method of compounding these two types of carbon black into rubber is not particularly limited, either, and they can be separately added or mixed together (after pre-mixing or simultaneously) into the rubber. .
そして、本発明のゴム組成物中には、従来のタイヤサ
イドトレッド用ゴム組成物と同様に、加硫促進剤、加硫
助剤、硫黄、亜鉛華、脂肪酸金属塩、プロセスオイル、
老化防止剤、ワックス等の各種の配合剤を適量配合する
ことができる。And, in the rubber composition of the present invention, similarly to the conventional tire side tread rubber composition, a vulcanization accelerator, a vulcanization aid, sulfur, zinc white, a fatty acid metal salt, a process oil,
Various compounding agents such as antioxidants and waxes can be compounded in appropriate amounts.
以下、実施例により本発明を具体的に説明する。な
お、実施例中、タイヤの耐オゾン性、耐汚れ性、耐クラ
ック性および体積固有抵抗はそれぞれ、次の測定法によ
り測定した。Hereinafter, the present invention will be described specifically with reference to examples. In the examples, the ozone resistance, stain resistance, crack resistance, and volume resistivity of the tire were measured by the following measurement methods.
耐オゾン性： JIS−Ｋ−6301 16に規定されているオゾン劣化試験
法に準じて測定した。Ozone resistance: Measured according to the ozone degradation test method specified in JIS-K-6116.
耐汚れ性： サイズが185/70R13 Y351のタイヤのサイドトレッド
部分を６等分し、この６等分されたサイドトレッド部分
を構成するゴム組成物として、表１に示す６種類のゴム
組成物を使用してタイヤを作製した。Stain resistance: The side tread portion of a tire having a size of 185 / 70R13 Y351 is divided into six equal parts, and the six types of rubber compositions shown in Table 1 are used as the rubber compositions constituting the six equally divided side tread parts. Used to produce a tire.
このタイヤを車両に装着して、5,000Km走行した時点
で、前記サイドトレッド部分の黒色度を東京電色（株）
製の 「リフレクトメーター」（REFRECTOMETER）TP−200を使
用して測定した。When the tire was mounted on the vehicle and the vehicle traveled 5,000 km, the blackness of the side tread was changed to Tokyo Denshoku Co., Ltd.
It was measured using a “Reflectometer” (REFRECTOMETER) TP-200.
この値が小さいほど黒色であることを示す。 The smaller this value is, the blacker it is.
耐クラック性： JIS−Ｋ−6301に規定されている方法に準じて測定し
た。Crack resistance: Measured according to the method specified in JIS-K-6301.
体積固有抵抗： 定電流装置として、北斗電工（株）製のポテンシオス
タット・ガルバノスタットHA104を使用し、電圧計とし
て、アドバンテスト（株）製のデジタルエレクトロヌー
ターTR8652を使用した。Volume specific resistance: A potentiostat galvanostat HA104 manufactured by Hokuto Denko Co., Ltd. was used as a constant current device, and a digital electronuter TR8652 manufactured by Advantest Co., Ltd. was used as a voltmeter.
巾が10mm、長さが60mm、厚さ2mmの試料を作製し、試
料の中心20mmの両端に、それぞれプラス端子、マイナス
端子を固定し、通電を開始した後60秒経過した後の電圧
を読み取り、次式にしたがって体積固有抵抗値（Ｐ）を
算出した。Prepare a sample with a width of 10mm, a length of 60mm and a thickness of 2mm, fix the plus terminal and the minus terminal respectively at both ends of the center 20mm of the sample, and read the voltage 60 seconds after the start of energization The volume resistivity (P) was calculated according to the following equation.
Ｐ＝（Ｖ×ｓ）／（ｉ×Ｌ） 上式中、Ｖは上述した60秒経過した後の電圧、ｓは測
定した試料の断面図、ｉは電流、Ｌは検出端子間の距離
（20mm）である。P = (V × s) / (i × L) In the above equation, V is the voltage after 60 seconds described above, s is the sectional view of the measured sample, i is the current, and L is the distance between the detection terminals ( 20 mm).
実施例１、２、比較例１〜３、従来例 表１に示す導電性カーボンブラックを、表２に示す通
り配合した６種類のゴム組成物を調製した。これらのゴ
ム組成物をサイドトレッド用ゴム組成物として使用し、
タイヤサイズが185/70R13 Y351のタイヤを作製した。Examples 1 and 2, Comparative Examples 1 to 3, and Conventional Examples Six types of rubber compositions were prepared by blending conductive carbon black shown in Table 1 as shown in Table 2. Using these rubber compositions as a rubber composition for side tread,
A tire having a tire size of 185 / 70R13 Y351 was manufactured.
上記６種類のゴム組成物および試作タイヤについて、
耐オゾン性、耐クラック性、体積固有抵抗、耐汚れ性を
測定した。結果を表２に示した。For the above six types of rubber composition and the prototype tire,
Ozone resistance, crack resistance, volume resistivity, and stain resistance were measured. The results are shown in Table 2.
表中、VULCAN−XZ−72,VULCAN−PA−74,VULCAN−Ｃ
は、それぞれキャボット（株）製の導電性カーボンブラ
ックの商品名、また、Mitsubishi ＃20B,Mitsubishi
＃CF9は三菱化成（株）製の導電性カーボンブラックの
商品名、HTC＃100は中部カーボン（株）製の通常のFEF
カーボンブラックの商品名である。 In the table, VULCAN-XZ-72, VULCAN-PA-74, VULCAN-C
Are the trade names of conductive carbon black manufactured by Cabot Co., Ltd., and Mitsubishi # 20B, Mitsubishi
# CF9 is a trade name of conductive carbon black manufactured by Mitsubishi Kasei Co., Ltd. HTC # 100 is a normal FEF manufactured by Chubu Carbon Co., Ltd.
It is a trade name of carbon black.
〔発明の効果〕 本発明の乗用車用ラジアルプライタイヤは、従来のタ
イヤと同等の耐オゾン性を有し、かつタイヤサイドトレ
ッドの少なくとも表面部は、体積固有抵抗が104Ωcm以
下という高導電性を有するから、サイドトレッド面だけ
でなく、タイヤの表面全体への塵埃や泥などの付着が著
しく少なくなり、長期にわたって当初のタイヤ外観を維
持することができる。 [Effect of the Invention] The radial ply tire for a passenger car of the present invention has the same ozone resistance as a conventional tire, and at least the surface portion of the tire side tread has a high conductivity with a volume resistivity of 10 4 Ωcm or less. Therefore, the adhesion of dust, mud, etc., not only to the side tread surface but also to the entire tire surface is significantly reduced, and the initial tire appearance can be maintained for a long period of time.
フロントページの続き (56)参考文献 特開 昭61−143203（ＪＰ，Ａ) 特開 平１−20246（ＪＰ，Ａ) 特開 昭62−138539（ＪＰ，Ａ) 特開 昭61−27703（ＪＰ，Ａ) 特開 昭61−195161（ＪＰ，Ａ) 特開 昭61−66759（ＪＰ，Ａ) 特公 昭60−9921（ＪＰ，Ｂ２) 特公 平１−40057（ＪＰ，Ｂ２) 特公 平４−17993（ＪＰ，Ｂ２) 特公 平２−16933（ＪＰ，Ｂ２) 特公 平７−91422（ＪＰ，Ｂ２) 特公 平５−17265（ＪＰ，Ｂ２) 特公 平５−10391（ＪＰ，Ｂ２) 特公 昭40−16132（ＪＰ，Ｂ１) 特公 平３−29816（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) B60C 1/00 B60C 11/00 C09D 15/00 - 17/00 C08K 3/00 C08L 7/00 - 21/02 C08C 1/00 - 3/12Continuation of the front page (56) References JP-A-61-143203 (JP, A) JP-A-1-20246 (JP, A) JP-A-62-138539 (JP, A) JP-A-61-27703 (JP) JP-A-61-195161 (JP, A) JP-A-61-66759 (JP, A) JP-B-60-9921 (JP, B2) JP-B-1-40057 (JP, B2) JP-B 4-17993 (JP, B2) JP 2-16933 (JP, B2) JP 7-91422 (JP, B2) JP 5-17265 (JP, B2) JP 5-10391 (JP, B2) B2) JP 40-16132 (JP, B1) JP 3-29816 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB name) B60C 1/00 B60C 11/00 C09D 15 / 00-17/00 C08K 3/00 C08L 7/00-21/02 C08C 1/00-3/12
Claims (2)
有抵抗が104Ω・cm以下である加硫可能なゴム組成物に
よりサイドトレッドの少なくとも表面部を構成したこと
を特徴とする乗用車用ラジアルプライタイヤ。1. A radial ply for a passenger car, wherein at least a surface portion of a side tread is constituted by a vulcanizable rubber composition containing conductive carbon black and having a volume resistivity of 10 4 Ω · cm or less. tire.
窒素吸着表面積（N2SA）、90〜130ml/100gのジブチルフ
タレート（DBP）吸油量、7.0〜8.0のpH、1.0〜3.0の揮
発分を有するカーボンブラックであり、その配合量が５
〜25重量部の範囲内である請求項１に記載の乗用車用ラ
ジアルプライタイヤ。2. The conductive carbon black has a nitrogen adsorption surface area (N 2 SA) of 100 to 150 m 2 / g, a dibutyl phthalate (DBP) oil absorption of 90 to 130 ml / 100 g, a pH of 7.0 to 8.0, and a pH of 1.0 to 3.0. It is a carbon black with a volatile content, and its blending amount is 5
The radial ply tire for a passenger car according to claim 1, wherein the amount is in a range of about 25 parts by weight.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1020880A JP2782073B2 (en) | 1989-02-01 | 1989-02-01 | Radial ply tires for passenger cars |
| DE4002628A DE4002628A1 (en) | 1989-02-01 | 1990-01-30 | Dirt-resistant vehicle tyres - have on outside of outer side wall rubber mixt. with low specific resistance contg. electrically-conducting carbon black |
| KR1019900001043A KR0143901B1 (en) | 1989-02-01 | 1990-01-31 | Radial tire |
| US07/794,837 US5173135A (en) | 1989-02-01 | 1991-11-21 | Radial tire for pssenger cars with sidewall rubber including electrically conductive carbon black |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1020880A JP2782073B2 (en) | 1989-02-01 | 1989-02-01 | Radial ply tires for passenger cars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02202936A JPH02202936A (en) | 1990-08-13 |
| JP2782073B2 true JP2782073B2 (en) | 1998-07-30 |
Family
ID=12039506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1020880A Expired - Fee Related JP2782073B2 (en) | 1989-02-01 | 1989-02-01 | Radial ply tires for passenger cars |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2782073B2 (en) |
| KR (1) | KR0143901B1 (en) |
| DE (1) | DE4002628A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1264990B1 (en) * | 1993-12-14 | 1996-10-17 | Pirelli | ANTISTATIC TIRE WITH LOW CARBON BLACK COMPOUNDS |
| DE69514324T2 (en) * | 1994-10-11 | 2000-07-27 | Bridgestone Corp., Tokio/Tokyo | RUBBER COMPOSITION, IMPROVED IN THE STATIC CHARGE STRUCTURE AND TIRES MADE THEREOF |
| DE4447823B4 (en) * | 1994-12-21 | 2007-07-26 | Dunlop Gmbh | Vehicle tires and process for its manufacture |
| DE4445758B4 (en) * | 1994-12-21 | 2005-06-02 | Dunlop Gmbh | Dissipating electrostatic charge through vehicle tyre - by providing electrically conductive layer with electrically conductive radial extensions extending from layer to tyre surface |
| DE69513131T2 (en) | 1994-12-22 | 2000-02-24 | Sumitomo Rubber Industries Ltd., Kobe | Pneumatic tires with electrically conductive properties |
| CA2173917A1 (en) * | 1995-07-20 | 1997-01-21 | Manuela Pompei | Silica reinforced treaded tire with conductive shoulder and crown portions |
| DE19603441C2 (en) * | 1996-02-01 | 1999-12-23 | Continental Ag | Method for producing a vehicle tire |
| DE69722519T2 (en) * | 1996-07-18 | 2004-05-06 | Bridgestone Corp. | tire |
| US6415833B1 (en) | 1996-07-18 | 2002-07-09 | Bridgestone Corporation | Pneumatic tire having electrically conductive rubber layer in land portion defined between circumferential grooves |
| US8695663B2 (en) * | 2011-12-20 | 2014-04-15 | The Goodyear Tire & Rubber Company | Tire component containing syndiotactic-1,2-polybutadiene |
| EP2730609B1 (en) | 2012-11-08 | 2015-09-09 | Sumitomo Rubber Industries, Ltd. | Rubber compositions for bead apex, sidewall packing, base tread, breaker cushion, steel cord topping, strip adjacent to steel cords, tie gum, and sidewall, and pneumatic tires |
| CN103804731B (en) | 2012-11-08 | 2017-04-12 | 住友橡胶工业株式会社 | Rubber composition for tread, and pneumatic tire |
| JP5719822B2 (en) * | 2012-11-08 | 2015-05-20 | 住友ゴム工業株式会社 | Rubber composition and pneumatic tire |
| JP5719823B2 (en) * | 2012-11-08 | 2015-05-20 | 住友ゴム工業株式会社 | Rubber composition and pneumatic tire |
| CN103804724B (en) | 2012-11-08 | 2018-01-12 | 住友橡胶工业株式会社 | Rubber composition and pneumatic tire |
| JP6220635B2 (en) * | 2013-10-31 | 2017-10-25 | 住友ゴム工業株式会社 | Rubber composition for tire and pneumatic tire using the same |
-
1989
- 1989-02-01 JP JP1020880A patent/JP2782073B2/en not_active Expired - Fee Related
-
1990
- 1990-01-30 DE DE4002628A patent/DE4002628A1/en not_active Withdrawn
- 1990-01-31 KR KR1019900001043A patent/KR0143901B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR0143901B1 (en) | 1998-08-01 |
| JPH02202936A (en) | 1990-08-13 |
| KR900012778A (en) | 1990-09-01 |
| DE4002628A1 (en) | 1990-08-02 |
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