JPS6399251A - Pneumatic tire having improved tread - Google Patents
Pneumatic tire having improved treadInfo
- Publication number
- JPS6399251A JPS6399251A JP61244267A JP24426786A JPS6399251A JP S6399251 A JPS6399251 A JP S6399251A JP 61244267 A JP61244267 A JP 61244267A JP 24426786 A JP24426786 A JP 24426786A JP S6399251 A JPS6399251 A JP S6399251A
- Authority
- JP
- Japan
- Prior art keywords
- styrene
- rubber
- weight
- pneumatic tire
- parts
- 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
- 229920001971 elastomer Polymers 0.000 claims abstract description 40
- 239000005060 rubber Substances 0.000 claims abstract description 40
- 229920003192 poly(bis maleimide) Polymers 0.000 claims abstract description 22
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 18
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 15
- 239000011593 sulfur Substances 0.000 claims abstract description 15
- 238000004073 vulcanization Methods 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 14
- -1 bismaleimide compound Chemical class 0.000 claims abstract description 13
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 13
- 239000006229 carbon black Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 4
- 239000011630 iodine Substances 0.000 claims abstract description 4
- 125000004957 naphthylene group Chemical group 0.000 claims abstract description 3
- 238000001179 sorption measurement Methods 0.000 claims abstract description 3
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 claims abstract 2
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 9
- 229960002447 thiram Drugs 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 6
- 150000001993 dienes Chemical class 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 abstract description 9
- 238000013329 compounding Methods 0.000 abstract description 5
- PUKLCKVOVCZYKF-UHFFFAOYSA-N 1-[2-(2,5-dioxopyrrol-1-yl)ethyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1CCN1C(=O)C=CC1=O PUKLCKVOVCZYKF-UHFFFAOYSA-N 0.000 abstract description 3
- 229920001577 copolymer Polymers 0.000 abstract description 2
- 229920003244 diene elastomer Polymers 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000178 monomer Substances 0.000 description 5
- AUZONCFQVSMFAP-UHFFFAOYSA-N disulfiram Chemical compound CCN(CC)C(=S)SSC(=S)N(CC)CC AUZONCFQVSMFAP-UHFFFAOYSA-N 0.000 description 4
- BUZICZZQJDLXJN-UHFFFAOYSA-N 3-azaniumyl-4-hydroxybutanoate Chemical compound OCC(N)CC(O)=O BUZICZZQJDLXJN-UHFFFAOYSA-N 0.000 description 3
- 239000006237 Intermediate SAF Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- WMFYOYKPJLRMJI-UHFFFAOYSA-N Lercanidipine hydrochloride Chemical compound Cl.COC(=O)C1=C(C)NC(C)=C(C(=O)OC(C)(C)CN(C)CCC(C=2C=CC=CC=2)C=2C=CC=CC=2)C1C1=CC=CC([N+]([O-])=O)=C1 WMFYOYKPJLRMJI-UHFFFAOYSA-N 0.000 description 2
- 241001483078 Phyto Species 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- LEOJDCQCOZOLTQ-UHFFFAOYSA-N dibutylcarbamothioyl n,n-dibutylcarbamodithioate Chemical compound CCCCN(CCCC)C(=S)SC(=S)N(CCCC)CCCC LEOJDCQCOZOLTQ-UHFFFAOYSA-N 0.000 description 2
- PGAXJQVAHDTGBB-UHFFFAOYSA-N dibutylcarbamothioylsulfanyl n,n-dibutylcarbamodithioate Chemical compound CCCCN(CCCC)C(=S)SSC(=S)N(CCCC)CCCC PGAXJQVAHDTGBB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- GQWNEBHACPGBIG-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-2-[2-(1,3-benzothiazol-2-ylsulfanylamino)ethoxy]ethanamine Chemical compound C1=CC=C2SC(SNCCOCCNSC=3SC4=CC=CC=C4N=3)=NC2=C1 GQWNEBHACPGBIG-UHFFFAOYSA-N 0.000 description 2
- 239000011115 styrene butadiene Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- PYVHLZLQVWXBDZ-UHFFFAOYSA-N 1-[6-(2,5-dioxopyrrol-1-yl)hexyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1CCCCCCN1C(=O)C=CC1=O PYVHLZLQVWXBDZ-UHFFFAOYSA-N 0.000 description 1
- 150000003923 2,5-pyrrolediones Chemical class 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- PEEHTFAAVSWFBL-UHFFFAOYSA-N Maleimide Chemical compound O=C1NC(=O)C=C1 PEEHTFAAVSWFBL-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Landscapes
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は空気入シタイヤ、詳しくは高速ｉｔ久性と高運
動性の両方を必要とする乗用車用タイヤ、二輪車用タイ
ヤ及びレーシング用タイヤに関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to pneumatic tires, specifically tires for passenger cars, motorcycles, and racing tires that require both high-speed durability and high maneuverability. It is.
〔従来の技術］
最近、自動車の性能同上や高速道路網の発達に伴ない、
高速運動性能を備えた空気入シタイヤの要求が強まシ、
特にグリラグ性能は！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。[Conventional technology] Recently, with the improvement in the performance of automobiles and the development of expressway networks,
The demand for pneumatic tires with high-speed maneuverability is increasing.
Especially the grillage performance! These are important required characteristics, typified by acceleration performance and braking performance.
したがりてこれらの特性が高いタイヤはどよシ高速でか
つよシ正確に走行することができる。Therefore, tires with high these characteristics can run at high speeds and accurately.
従来、高グリッグ性能を得るためには、トレッドゴム組
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）全選
択するか、またはオイル及びカーボンブラックを高充填
した配合系を選択する必要があシ、トレッドゴム組成物
のヒスブリシスロス金入きくすることが必要であった。Conventionally, in order to obtain high grip performance, styrene-butadiene copolymer rubber with a high styrene content (rubber with a high glass transition temperature) was selected as the polymer in the tread rubber composition, or highly filled with oil and carbon black. It is necessary to select a compounding system that is suitable for the tread rubber composition, and it is also necessary to select a compounding system that is suitable for the tread rubber composition.
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
昇に伴ないトレッドゴムにブロー（ｂｌｏｗ）が発生し
、ゴム弾性が失なわれ、グリップ性能や耐摩耗性能が著
しく低下してしまういわゆる１０−アウ） （ｂｌｏｗ
ｏｕｔ ）現象を引き起すという欠点があった。For this reason, when the tire runs at high speed, the tire generates heat due to hysteresis loss, and as the tire temperature rises during high-speed travel, the tread rubber blows, causing a loss of rubber elasticity and grip performance. (blow
This method has the disadvantage of causing a phenomenon (out).
このように従来のトレッドゴム組成物では、高グリッグ
性能と高速耐久性を両方させることが困難であシ、高運
動性能ｔ−重視するタイヤは高速耐久性を犠牲にし、高
速耐久性を重視するタイヤは高運動性能をある程度犠牲
にせざるをえなかった。In this way, with conventional tread rubber compositions, it is difficult to achieve both high grip performance and high-speed durability, and tires that emphasize high-dynamic performance tend to sacrifice high-speed durability and prioritize high-speed durability. Tires had to sacrifice some degree of high maneuverability.
本発明は、この二律背反現象全解決することを目的とす
る。The present invention aims to completely resolve this antinomy phenomenon.
本発明は、加硫剤として通常使用される硫黄以外に、従
来ニジハイパロンのようなりロロス〃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グレンゴ
ム全ペースとした長時間加硫や高温加硫（「ポリマーの
友Ｊ １９７５年７月Ｐ３２７．１９７７年８月Ｐ４８
４．１９７９年１０月Ｐ５９０゜１９８１年ｌＯ月Ｐ５
９２〜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本発明の連成手段の一
要素として有効であること、しかもスチレン−！タジエ
ン共１合体ゴムの場合ビスマレイミド／硫黄の比が１／
３以下の場合のみ有効である（「ポリマーの友Ｊ １９
７７年８月Ｐ４８４）と考えられていたが、高スチレン
のスチレン−ブタジエン共重合体ゴムと小粒径のカーボ
ンブラックを組み合せた高ヒステリシスロスをもつがム
の高速耐久性に対しては、ビスマレイミド／硫黄の比が
１７１〜２０／１である場合にだけ大きな効果が得られ
ることの発見に基ずくものである。In addition to sulfur, which is commonly used as a vulcanizing agent, the present invention is capable of long-term vulcanization and high-temperature vulcanization using conventional peroxide crosslinking aids such as Nijihypalon and Rolos phonated polyethylene, and polyisogrene rubber as a whole paste. Vulcanization (“Polymer no Tomo J July 1975 P327, August 1977 P48
4. October 1979 P590゜1981 October P5
92 to P593.September 1982, P533) shows that the bismaleimide compound is effective as an element of the coupling means of the present invention.Moreover, styrene-! In the case of tadiene monomer rubber, the bismaleimide/sulfur ratio is 1/
Valid only if 3 or less (“Polymer no Tomo J 19
However, the high-speed durability of rubber with high hysteresis loss, which is a combination of high styrene styrene-butadiene copolymer rubber and small particle size carbon black, is It is based on the discovery that great effects are obtained only when the maleimide/sulfur ratio is between 171 and 20/1.
すなわち、本発明は、結合スチレンの合計がスチレン−
ツタツエン共１合体がム全体の３０″ｉ盆チ以上である
少なくとも一種の該スチレンーブタジェン共重合体ゴム
若しくは該スチレン−ブタジエン共重合体ゴム５０部以
上と他のジ二ン系ゴム５０部以下とからなるブレンドゴ
ムｘｏｏｘｔ部一対し、ヨウ素吸溜量が８０１１’Ｊ９
／ｉ以上のカーダンブラック６５〜１６０ｉ１Ｋ３１部
、加硫剤として硫黄ｔｏ、３〜２．５ｉ量部及び一般式
（ここでＲは７．ニレン基、ナフチレン基、−（ＣＨ２
）。−基のいずれかを表わし、ｎは２〜６の整数）
で表わされるビスマレイミド化合物を、ビスマレイミド
化合物／＠黄の重量比が１〜２０の割合で配合してなる
ゴム組成物全トレッドに使用したことを特徴とする改良
されたトレッドを有する空気入シタイヤに関する。That is, in the present invention, the total amount of bound styrene is styrene-
At least 50 parts or more of the styrene-butadiene copolymer rubber or the styrene-butadiene copolymer rubber in which the total amount of copolymer is 30 inches or more of the entire rubber, and 50 parts of other didine rubber. The amount of iodine adsorbed is 8011'J9 for a pair of blend rubber
/i or more cardan black 65-160i1K31 parts, sulfur to as a vulcanizing agent, 3-2.5i parts and general formula (where R is 7.nylene group, naphthylene group, -(CH2
). - group, where n is an integer of 2 to 6) A rubber composition is prepared by blending a bismaleimide compound represented by the following formula in a weight ratio of bismaleimide compound/@yellow of 1 to 20. The present invention relates to a pneumatic tire having an improved tread characterized by its use.
本発明で使用されるスチレン−ブタジエン共１合体ゴム
は結合スチレン量が３０重量−以上、好ましくは３０〜
４ＯＮ量−の単独ゴムでもよいが、結合スチレン藍が異
なる２ｍ以上のスチレン−ゲタジエン共１合体ゴムであ
シ且つ結合スチレンの合計が該スチレン−ブタジエン共
重合体ゴム全体の３０重量−以上であるブレンドゴムで
あってもよい。The styrene-butadiene monomer rubber used in the present invention has a bound styrene content of 30% by weight or more, preferably 30 to 30% by weight.
It may be a single rubber with an amount of 4ON, but it must be a styrene-getadiene monomer rubber with a length of 2 m or more with different bonded styrene colors, and the total amount of bound styrene is 30% or more by weight of the entire styrene-butadiene copolymer rubber. It may also be a blended rubber.
また、本発明でスチレン−ブタジエン共１合体ゴムとブ
レンドして使用できる他のジエン系ゴムの例としては、
ポリブタジェン、合成イングレンゴム、天然コ争ム、ブ
タジェン−アクリロニトリル共１合体ゴムなどがめげら
れる。Examples of other diene rubbers that can be used in the present invention by blending with the styrene-butadiene monomer rubber include:
Examples include polybutadiene, synthetic inglene rubber, natural rubber, and butadiene-acrylonitrile monomer rubber.
本発明の空気入υタイヤに用いられるトレッドがムに配
合されるカーボンブラックとしては、ヨウ素吸着量（Ｉ
Ａ）が８０ｍｇ／ｇ以上のカーボンブラックで、具体例
としては、８ＡＦ 、 ｌ５ＡＦ 、 Ｈａ−ＩＳＡＦ
。The iodine adsorption amount (I
A) is carbon black of 80 mg/g or more, specific examples include 8AF, 15AF, Ha-ISAF
.
ＬＳ−ＩＳＡＦ 、 ＬＭ−ＩＳＡＦ 、 ＨＡＦ 、
Ｈ８−ＨＡＦ 、 Ｎ３３９ 、等である。これらの
カーボンブラックの配合量をゴム成分１００Ｘ量部に対
して６５〜１６０重量部に規定したのは、６５重量部未
溝ではグリップ性能が充分でなく、１６０］［置部以上
では、耐摩耗性が著しく低下するためである。LS-ISAF, LM-ISAF, HAF,
H8-HAF, N339, etc. The reason for specifying the blending amount of carbon black to be 65 to 160 parts by weight per 100 parts of the rubber component is because the grip performance is insufficient when 65 parts by weight are not grooved, and the abrasion resistance is This is because the performance is significantly reduced.
本発明の空気入シタイヤに用いられるトレッドジムに配
合される加硫剤としては、硫黄とビスマレイミド化合物
が用いられる。このビスマレイミド化合物の具体例とし
ては、Ｎ、Ｎ’ −ｍ−７エニレンピスマレイミド、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５ＮｅＮ′−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が、籍にＮ、Ｎ’−エチレンビスツ
レイミドは高温に於ても効果が大きいので好ましい。Sulfur and a bismaleimide compound are used as the vulcanizing agent blended into the tread gym used in the pneumatic tire of the present invention. Specific examples of this bismaleimide compound include N,N'-m-7enylene pismaleimide, N
, N'-1,5-naphthylene bismaleimide, N,
There are N'-ethylene bismaleimide, 5NeN'-tetramethylene bismaleimide, N,N'-hexamethylene bismaleimide, etc., but N,N'-ethylene bismaleimide is preferred because it is highly effective even at high temperatures. .
硫黄の配合量は、０．３〜２．５重量部であ）。The blending amount of sulfur is 0.3 to 2.5 parts by weight).
０．３Ｘ量部未満では高い物性値をもつ加硫物が得られ
す、２．５ 電量部を越えると、トレッド；・ムの硬度
が高くなシすぎて、グリップ性能が悪化するため好まし
くない。If it is less than 0.3 parts by weight, a vulcanizate with high physical properties will be obtained; if it exceeds 2.5 parts by weight, the hardness of the tread will be too high and the grip performance will deteriorate, which is undesirable. .
また、ビスマレイミド化合物の配合！Ｉｋは、ビスマレ
イミド／硫黄の！を量比が１〜２０になるように配合さ
れビスマレイミド／硫黄の重量比が１未満の場合は、高
ヒステリシスロスをもつトレッドがムを用いたタイヤの
高速耐久性を大きく同上させることができない。また、
この重量比が２０以上になると硬直が大となυグリップ
性能が低下するので使用されない。ビスマレイミド／硫
黄の重量比は好ましくは１−１０である。In addition, it contains a bismaleimide compound! Ik is bismaleimide/sulfur! If the bismaleimide/sulfur weight ratio is less than 1, the high-speed durability of a tire using a tread with high hysteresis loss cannot be significantly improved. . Also,
If this weight ratio exceeds 20, stiffness increases and the υ grip performance deteriorates, so it is not used. The bismaleimide/sulfur weight ratio is preferably 1-10.
加硫促進剤としては、通常タイヤの加硫に使用されてい
るもので、具体例としては、ジペンゾチアツルジス／Ｉ
／フィト（ＤＭ）、２−メ々カグトベンゾチアゾー〃、
１．３−ジフェニルグアニジン（ＤＰＧ）、Ｎ−７クロ
ヘキシルー２−ベンゾチアゾリルスルフェンアミド、Ｎ
−オキシジエチレン−２−ベンゾチアゾリルスルフェン
アミド（Ｎ０ＢＳ ） 、Ｎ−ｔｅｒｔ−プチＡ／−２
−ペンジチアジルスルフェンアミド、テトラメチルチウ
ラムジスルフィド（ＴＴ）、テトラエチルチウラムジス
ルフィド、テトラブチルチウラムジスルフィド、テトラ
メチルチウラムモノスルフィド（ＴＳ）、テトラブチル
チウラムモノスルフィド等であるが、特に全加硫促進剤
中のチウラム系加硫促進剤は重量−で３３％以上用いる
とビスマレイミドとの相乗効果によシ、さらに高速耐久
性（耐ブローアウト性）が向上するので好ましい。この
チウラム系加硫促進剤の具体的としては、テトラメチル
チウラムジスルフィド（ＴＴ）。The vulcanization accelerator is one commonly used for tire vulcanization, and a specific example is dipenzothiaturdis/I.
/ Phyto(DM), 2-Mekagutobenzothiazole,
1.3-diphenylguanidine (DPG), N-7 clohexyl-2-benzothiazolylsulfenamide, N
-Oxydiethylene-2-benzothiazolylsulfenamide (NOBS), N-tert-Petit A/-2
- Pendithiazyl sulfenamide, tetramethylthiuram disulfide (TT), tetraethylthiuram disulfide, tetrabutylthiuram disulfide, tetramethylthiuram monosulfide (TS), tetrabutylthiuram monosulfide, etc., but especially total vulcanization accelerators It is preferable to use the thiuram-based vulcanization accelerator in an amount of 33% or more by weight because it has a synergistic effect with bismaleimide and further improves high-speed durability (blowout resistance). A specific example of this thiuram-based vulcanization accelerator is tetramethylthiuram disulfide (TT).
テトラエチルチウラムジスルフィド、テトラブチルチウ
ラムジスルフィド、テトラメチルチク２ムモノス／Ｌ／
フイト（ＴＳ）、テトラブチルチウラムモノスルフィド
等がある。Tetraethylthiuram disulfide, tetrabutylthiuram disulfide, tetramethylthiuram disulfide/L/
Examples include phyto (TS), tetrabutylthiuram monosulfide, and the like.
なお、本発明においては、ゴム工業界で通常使用されて
いる配合剤、例えば軟化剤、老化防止剤。In addition, in the present invention, compounding agents commonly used in the rubber industry, such as softeners and anti-aging agents, are used.
加硫促進助剤等を必要に応じて通常の配合量の範囲内で
適宜配合してもよい。Vulcanization accelerators and the like may be appropriately blended within the usual range of blending amounts, if necessary.
以上詳述したように１本発明による空気入りタイヤは、
トレッド′を上述の構成からなるゴム組成物で構成した
ためグリップ性能を損うことなくブローアウト温度を高
めることができるので、高運動性と高速耐久性を併せ持
つ空気入シタイヤを提供することができる。As detailed above, the pneumatic tire according to the present invention includes:
Since the tread' is made of the rubber composition having the above-mentioned structure, the blowout temperature can be increased without impairing the grip performance, so it is possible to provide a pneumatic tire that has both high maneuverability and high-speed durability.
以下比較例と実施例によシ本発明の詳細な説明する。 The present invention will be explained in detail below using comparative examples and examples.
実施例１−１１．比較例１〜６
第１表に示し次配合内容による各種コ９ム組成物を作成
し、加硫後、粘弾性テスト及びブローアウト性テスト更
にこれらが五組酸物をタイヤサイズ１３０７８０−１８
の二輪車用タイヤのトレッドに使用して実車テスト及び
高速耐久ドラムテストを行なった。結果を第１表に示す
。Example 1-11. Comparative Examples 1 to 6 Various compositions with the following formulations shown in Table 1 were prepared, and after vulcanization, viscoelasticity tests and blowout tests were carried out.
Actual vehicle tests and high-speed durability drum tests were conducted using the product in the treads of motorcycle tires. The results are shown in Table 1.
尚、評価方法は以下の通シである。The evaluation method is as follows.
（粘弾性テスト）
レオメトリックス社製粘弾性測定試験機を用いて、動的
歪３チ１周波数５０Ｈｚの条件下で、０℃と６０℃の−
δを測定した。(Viscoelasticity test) Using a viscoelasticity measuring tester manufactured by Rheometrics, under the conditions of dynamic strain 3 channels, 1 frequency 50Hz, -
δ was measured.
（ブローアウトテスト）
約７ ｍ Ｘ ７餌Ｘ ３．５ ｍの加硫ゴム試料片全
いすず製作所製の電気坩堝炉に入れ、温度’ｔ３００℃
から５℃間隔で３７０℃まで、それぞれの温度で約２０
分間放置後、取シ出した試料片を半分に切り、内部に気
泡が発生しているかどうかを内服で６認した。３００℃
から５℃間隔で温度全上昇させ、初めて気泡が発生して
いた温匹ヲブローアウト温度とした。(Blowout test) A vulcanized rubber specimen measuring approximately 7 m x 7 baits x 3.5 m was placed in an electric crucible furnace manufactured by Isuzu Seisakusho, and the temperature was 300°C.
to 370℃ at 5℃ intervals, approximately 20℃ at each temperature.
After standing for a minute, the sample piece was taken out and cut in half, and the presence or absence of air bubbles inside was examined by internal administration. 300℃
The temperature was raised completely at 5°C intervals from then on, and the temperature at which bubbles were first generated was taken as the blowout temperature.
（実車テスト）
表１に示した配合のトレッドゴムを用いたサイズ１３０
／８０−１８の二輪車用タイヤ金後輪に使用し、ウェッ
ト路面とドライ路面の両方をできるだけ高速で走行して
それぞれの路面でのグリップ性能をフィーリングで点数
付けを行なった。高速走行用高運動性能タイヤとして最
低必要と思われる点数’ｋ１００として、各タイヤ金指
数表示した。(Actual vehicle test) Size 130 using tread rubber with the composition shown in Table 1.
A /80-18 motorcycle tire was used on a gold rear wheel, and the tires were run on both wet and dry roads as fast as possible, and the grip performance on each road surface was scored based on feel. Each tire's gold index was expressed as 'k100', which is considered the minimum required score for a high-dynamic performance tire for high-speed running.
指数は大きい方が満足度が大きいことを表わす。The larger the index, the greater the satisfaction level.
（高速耐久ドラムテスト）
表１に示し九配合のトレッドゴム全周いたサイズ１３０
／８０−１８の二輪車用タイヤに内圧８．０に９／ｃｍ
”荷重３００ｋ１７の条件の下に直径が１．６Ｍｆｆ表
面が平滑なスチールドラム上で１７０ｋｍ／ｈの速度か
ら始め１０分間異常なく走行したら、１０ｋｒ％ｈづつ
速度を上げ各１０間走行させ、タイヤが故障したときの
速度にて評価した。(High-speed durability drum test) Size 130 with 9 combinations of tread rubber all around as shown in Table 1
/80-18 motorcycle tires with internal pressure of 8.0 to 9/cm
``Start at a speed of 170 km/h on a steel drum with a smooth surface of 1.6 Mff in diameter under the condition of a load of 300k17, run for 10 minutes without any abnormality, then increase the speed by 10kr%h and run for 10 minutes each time, and check that the tires are Evaluation was made based on the speed at which the failure occurred.
第１表から明らかなように、実施例で示した本発明によ
る空気式シタイヤはグリラグ性能を損うことなく高速耐
久性を溝足させることができる。As is clear from Table 1, the pneumatic seat tires according to the present invention shown in the Examples can improve high-speed durability without impairing the grip-lag performance.
これに対し、ビスマレイミド化合物を配合しないか（比
較例１．２）、配合してもビスマレイミド／硫黄の重量
比が１以下の場合（比較例３）は、高速耐久性が不充分
であシ、結合スチレンが全スチレン−ブタジエン共重合
体コ゛ムの３０ｉＪｊｊｋ％以下の場合（比較例４）は
、ウェットグリップが不充分であｐ、ＩＡがＦ３０ｍ９
／Ｉ以上のカーメンブラックでも６５１を部組下の場合
（比較例５）やＩＡが８０４＃以下のカーメンブラック
の場合（比較例６）は、ウェット・ドライグリップの両
方が不充分である。On the other hand, if a bismaleimide compound is not blended (Comparative Example 1.2) or if a bismaleimide compound is blended but the weight ratio of bismaleimide/sulfur is less than 1 (Comparative Example 3), the high-speed durability is insufficient. However, when the bound styrene content is less than 30iJjjk% of the total styrene-butadiene copolymer (Comparative Example 4), the wet grip is insufficient and the IA is F30m9.
Even if the carmen black has an IA of 651 or more (Comparative Example 5) or the carmen black has an IA of 804# or less (comparative example 6), both wet and dry grip are insufficient.
ま九、チウラム系加硫促進剤を全加硫促進剤中の３３′
Ｎ孟−以上とビスマレイミド／硫黄の重量比１以上を組
み合せると、その相乗効果により。Nine, thiuram-based vulcanization accelerator is 33' of all vulcanization accelerators.
Due to the synergistic effect when combining N- or more with a weight ratio of 1 or more of bismaleimide/sulfur.
嘔らに高速耐久性を向上できる。（実施例１〜４）さら
に、マレイミド化合物の中で、時にＮ、Ｎ’−エチレン
ビスマレイミド全使用すると、通常市販されているＮ、
Ｎ’−ｍ−７エニレンビスマレイミドなどより、高速耐
久性を向上できる。（実施例２〜９）It can significantly improve high-speed durability. (Examples 1 to 4) In addition, among the maleimide compounds, sometimes N,N'-ethylene bismaleimide is used entirely, usually commercially available N,
High-speed durability can be improved compared to N'-m-7 enylene bismaleimide and the like. (Examples 2 to 9)
Claims (1)
ム全体の３０重量％以上である少なくとも１種の該スチ
レン−ブタジエン共重合体ゴム若しくは該スチレン−ブ
タジエン共重合体ゴム５０部以上と他のジエン系ゴム５
０部以下とからなるブレンドゴム１００重量部に対し、
ヨウ素吸着量が８０ｍｇ／ｇ以上のカーボンブラック６
５〜１６０重量部、加硫剤として硫黄０．３〜２．５量
部及び一般式 ▲数式、化学式、表等があります▼ （ここでＲはフェニレン基、ナフチレン基、−（ＣＨ＿
２）ｎ−基のいずれかを表わし、ｎは２〜６の整で表わ
されるビスマレイミド化合物を、ビスマレイミド化合物
／硫黄の重量比が１／１〜２０／１の割合で配合してな
るゴム組成物をトレッドに使用したことを特徴とする改
良されたトレッドを有する空気入りタイヤ。 ２、全加硫促進剤中のチウラム系加硫促進剤の重量％が
３３％以上である特許請求範囲第１項記載の空気入力タ
イヤ。 ３、ビスマレイミド化合物のＲが−ＣＨ＿２−ＣＨ＿２
−基である特許請求範囲第１項記載の空気入りタイヤ。[Scope of Claims] At least one type of styrene-butadiene copolymer rubber in which the total amount of bound styrene is 30% by weight or more of the entire styrene-butadiene copolymer rubber, or 50 parts or more of the styrene-butadiene copolymer rubber. and other diene rubbers5
For 100 parts by weight of blended rubber consisting of 0 parts or less,
Carbon black 6 with an iodine adsorption amount of 80 mg/g or more
5 to 160 parts by weight, 0.3 to 2.5 parts by weight of sulfur as a vulcanizing agent, and general formulas ▲ Numerical formulas, chemical formulas, tables, etc. ▼ (Here, R is a phenylene group, a naphthylene group, -(CH_
2) A rubber obtained by blending a bismaleimide compound representing any of the n-groups, where n is an integer from 2 to 6, at a weight ratio of bismaleimide compound/sulfur of 1/1 to 20/1. A pneumatic tire having an improved tread characterized in that the composition is used in the tread. 2. The pneumatic tire according to claim 1, wherein the weight percentage of the thiuram vulcanization accelerator in the total vulcanization accelerator is 33% or more. 3. R of the bismaleimide compound is -CH_2-CH_2
- The pneumatic tire according to claim 1, which is a pneumatic tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61244267A JPS6399251A (en) | 1986-10-16 | 1986-10-16 | Pneumatic tire having improved tread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61244267A JPS6399251A (en) | 1986-10-16 | 1986-10-16 | Pneumatic tire having improved tread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6399251A true JPS6399251A (en) | 1988-04-30 |
Family
ID=17116207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61244267A Pending JPS6399251A (en) | 1986-10-16 | 1986-10-16 | Pneumatic tire having improved tread |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6399251A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH055046A (en) * | 1990-05-14 | 1993-01-14 | Nippon Petrochem Co Ltd | Partially crosslinked thermoplastic resin composition |
| WO2000046290A1 (en) * | 1999-02-05 | 2000-08-10 | Bridgestone Corporation | Rubber composition and pneumatic tire |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6079180A (en) * | 1983-10-06 | 1985-05-04 | Mitsubishi Heavy Ind Ltd | Vane pitch-angle controller for wind-power generation |
| JPS6114238A (en) * | 1984-06-30 | 1986-01-22 | Oouchi Shinko Kagaku Kogyo Kk | High-temperature vulcanizing rubber composition |
| JPS61213232A (en) * | 1985-03-19 | 1986-09-22 | Bridgestone Corp | Rubber-cord composite |
-
1986
- 1986-10-16 JP JP61244267A patent/JPS6399251A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6079180A (en) * | 1983-10-06 | 1985-05-04 | Mitsubishi Heavy Ind Ltd | Vane pitch-angle controller for wind-power generation |
| JPS6114238A (en) * | 1984-06-30 | 1986-01-22 | Oouchi Shinko Kagaku Kogyo Kk | High-temperature vulcanizing rubber composition |
| JPS61213232A (en) * | 1985-03-19 | 1986-09-22 | Bridgestone Corp | Rubber-cord composite |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH055046A (en) * | 1990-05-14 | 1993-01-14 | Nippon Petrochem Co Ltd | Partially crosslinked thermoplastic resin composition |
| WO2000046290A1 (en) * | 1999-02-05 | 2000-08-10 | Bridgestone Corporation | Rubber composition and pneumatic tire |
| US6506849B1 (en) | 1999-02-05 | 2003-01-14 | Bridgestone Corporation | Rubber composition and pneumatic tire |
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