JP2005068199A - Rubber composition for tire side tread - Google Patents
Rubber composition for tire side tread Download PDFInfo
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- JP2005068199A JP2005068199A JP2003209083A JP2003209083A JP2005068199A JP 2005068199 A JP2005068199 A JP 2005068199A JP 2003209083 A JP2003209083 A JP 2003209083A JP 2003209083 A JP2003209083 A JP 2003209083A JP 2005068199 A JP2005068199 A JP 2005068199A
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- carbon black
- rubber
- rubber composition
- tire side
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 34
- 239000005060 rubber Substances 0.000 title claims abstract description 34
- 239000000203 mixture Substances 0.000 title claims abstract description 23
- 239000006229 carbon black Substances 0.000 claims abstract description 45
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 238000001179 sorption measurement Methods 0.000 claims abstract description 8
- 239000006235 reinforcing carbon black Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 claims description 3
- 150000001993 dienes Chemical class 0.000 claims description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 229910000077 silane Inorganic materials 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 15
- 208000002740 Muscle Rigidity Diseases 0.000 abstract description 4
- 238000013329 compounding Methods 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- 241001441571 Hiodontidae Species 0.000 description 3
- 241000872198 Serjania polyphylla Species 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000012744 reinforcing agent Substances 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- 239000006237 Intermediate SAF Substances 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、タイヤサイドトレッド用ゴム組成物に関し、更に詳細には、低燃費化を図った上で高モジュラス化を達成し、タイヤの周剛性を増大させたタイヤサイドトレッド用ゴム組成物に関する。
【０００２】
【従来の技術】
トレッド部材用のタイヤ用ゴム組成物において、耐久性を高め、かつシリカの分散性を改善するために、シリカ表面処理カーボンブラックとシランカップリング剤とを配合する技術は、例えば、特開平８−２７７３４７号公報等に開示されている。また、加工性と分散性の悪化を生ずること無しに転動抵抗（発熱）を少なくし、耐屈曲疲労性も改良するようにしたタイヤのサイドトレッド用ゴム組成物も、特開平１０−８７８８６号公報に開示されている。しかしながら、低燃費化を図った上で高モジュラス化を達成し、タイヤの周剛性を増大させるタイヤサイドトレッド用ゴム部材が求められていた。
【０００３】
【特許文献１】
特開平８−２７７３４７号公報
【特許文献２】
特開平１０−８７８８６号公報
【０００４】
【発明が解決しようとする課題】
タイヤの操縦安定性を高めるためにサイドトレッドのモジュラスを増大することは、タイヤの周剛性増大につながるので有効である。他方、近年、省資源化の観点からタイヤの低転動抵抗化（低燃費化）の要求も厳しく、キャップトレッドだけでなくサイドトレッドなどの部材でも低発熱化が求められている。ところが、低発熱化を達成するべく粒度の大きなカーボンブラックに置換するとモジュラスの低下を招き、モジュラスを増大化するべく粒度の小さなカーボンブラックに置換すると低転動抵抗性能の悪化を招いている。そこで、本発明では、カーボンブラックの一部をシリカ表面処理カーボンブラックに置換することで、低転動抵抗性能（低燃費化）の悪化を招くこと無く、高モジュラス化を図ることができるタイヤサイドトレッド用ゴム組成物を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明によれば、ジエン系成分を含む少なくとも１種のゴムに、窒素吸着比表面積（Ｎ２ＳＡ）が９０〜１４０ｍ２／ｇであるゴム補強用カーボンブラックの表面にシリカを０．１〜５０重量％付着させた表面処理カーボンブラックと窒素吸着比表面積（Ｎ２ＳＡ）が２０〜１００ｍ２／ｇであるゴム補強用カーボンブラックとをその総配合量が４０〜７０重量部となるように配合し、更にシランカップリング剤を表面処理カーボンブラックの配合量に対し２〜１５重量％の分量で配合してなるタイヤサイドトレッド用ゴム組成物が提供される。
【０００６】
【発明の実施の形態】
本発明では、タイヤサイドトレッド用ゴム組成物に使用するカーボンブラック補強剤の一部をシリカ表面処理カーボンブラックに置換することで、低転動抵抗性能（低燃費化）の悪化を招くこと無しに高モジュラス化を図ることができることを見出したものである。
【０００７】
本発明で使用するシリカ表面処理カーボンブラックにおける補強用カーボンブラックには、サイドトレッド用の硬いゴム素材を得るべく、窒素吸着比表面積（Ｎ２ＳＡ）が９０〜１４０ｍ２／ｇのカーボンブラックが用いられる。そして、このシリカ表面処理カーボンブラックと共に用いられる未処理のカーボンブラックには、比表面積がより小さなＦＥＦ級の窒素吸着比表面積（Ｎ２ＳＡ）が２０〜１００ｍ２／ｇであるカーボンブラックが用いられる。
【０００８】
本発明で使用する上記シリカ表面処理カーボンブラックは、その製造方法には特に限定されないが、例えば、特開昭６３−６３７５５号公報に記載される方法に従って、上記カーボンブラックを水中に分散させ、ｐＨを６以上、好ましくは１０〜１１以上に調節し、温度を７０℃以上、好ましくは８５〜９５℃に保ちながら、例えば珪酸ナトリウムを加水分解させて、カーボンブラックの表面上に無定形シリカを付着または沈積させることによって製造できる。
【０００９】
シリカ表面処理カーボンブラック中のシリカの付着量は、０．１〜５０重量％が好適に使用され、更に好ましくは、０．３〜３０重量％である。このシリカの付着量が少な過ぎると、高温域（４０℃〜１００℃）の ｔａｎδと低温域の ｔａｎδ（０℃付近）のバランスが改良されず、逆に多過ぎると電気伝導性が低下してしまうと共に、補強剤の凝集力が強くなり混練中の分散性が不充分となるので好ましくない。
【００１０】
本発明のタイヤサイドトレッド用ゴム組成物に配合される補強剤としての所定のシリカ表面処理カーボンブラックと所定の未処理カーボンブラックとは、その総配合量が４０〜７０重量部、より好ましくは５０〜６０重量部となるように配合して用いられる。当該表面処理カーボンブラックと未処理カーボンブラックとの総配合量が４０重量部未満では硬さの低下を引き起こし操縦安定性に劣るため好ましくなく、また７０重量部を超えると低燃費性の悪化を伴うので好ましくない。また、当該シリカ表面処理カーボンブラックと未処理カーボンブラックとの配合割合は、好ましくは、この総配合量に対する表面処理カーボンブラックの配合量が１０〜８０重量％、より好ましくは２０〜６０重量％となるような配合比で用いられる。この総配合量に対する表面処理カーボンブラックの配合量が１０重量％未満では所期の効果が得られず、また８０重量％を超えると加工性が悪くなるため好ましくない。
【００１１】
本発明のタイヤサイドトレッド用ゴム組成物に更に配合されるシランカップリング剤としては、従来より一般タイヤ用に用いられてきたシランカップリング剤ならばいずれも使用することができるが、特に、ビス（３−トリエトキシシリル−プロピル）ジスルフィドを用いると、本発明の所期の効果を達成した上更に加工性をも改善できるので一層好ましい。このシランカップリング剤は、シリカ表面処理カーボンブラックの配合量に対し２〜１５重量％、好ましくは５〜１０重量％の分量で配合される。
【００１２】
本発明によるタイヤサイドトレッド用ゴム組成物に用いられる好適なゴム成分としては、天然ゴム（ＮＲ）、ポリイソプレンゴム（ＩＲ）、スチレンブタジエン共重合体ゴム（ＳＢＲ）、ポリブタジジエンゴム（ＢＲ）、ブチルゴム（ＩＩＲ）およびアクリロニトリルブタジエン共重合体ゴム（ＮＢＲ）などから選ばれるゴムを単独で、またはブレンドゴムとして使用することができる。
【００１３】
本発明のタイヤサイドトレッド用ゴム組成物には、前記した必須成分に加えて、更に通常の加硫または架橋剤、加硫または架橋促進剤、各種オイル、老化防止剤、可塑剤などのタイヤ用に配合されている各種配合剤が、従来の一般的な配合量として適宜配合される。
【００１４】
【実施例】
以下、実施例および比較例によって本発明を更に説明するが、本発明の技術的範囲をこれらの実施例によって限定するものでないことは言うまでもない。
【００１５】
シリカ表面処理カーボンブラックの調製
カーボンブラック（Ｎ２３４、三菱化学製）１００ｇのスラリーを常法により調製し、９０℃に加温した後、２０％に希釈したＪＩＳ３号珪酸ナトリウムを４時間かけて定量ポンプで添加しつつ、ｐＨ５〜１０に希硫酸および水酸化ナトリウム水溶液で維持しながらシリカをカーボンブラック表面に沈積させた。その後ｐＨを６に調整して６時間放置し、濾過、水洗、乾燥して目的物を得た。
【００１６】
試験サンプルの作製
以下の各表に示す配合における硫黄と加硫促進剤を除く配合成分を１．８リットルの密閉型ミキサーで３〜５分間混練し、１６０℃の温度に達したときに放出したマスターバッチに、硫黄と加硫促進剤を８インチのオープンロールで混練してゴム組成物を得た。ここで得られた表４の配合に係るゴム組成物のムーニースコーチを測定した。次いで、この組成物を１５ｃｍ×１５ｃｍ×０．２ｃｍの金型中で、１６０℃、２０分間プレス加硫して試験片（ゴムシート）を作製し、これによりｔａｎδ（６０℃）、３００％モジュラス、屈曲疲労などを測定、評価した。
【００１７】
試験法
１）ｔａｎδ（６０℃）： 粘弾性スペクトロメーター（東洋精機製）を用いて、温度６０℃、初期歪：１０％、動的歪：±２％、周波数２０Ｈｚの条件で測定した。
２）３００％モジュラス： ＪＩＳ Ｋ６２５１に準拠し、３００％モジュラスを測定した。
３）屈曲疲労： ＪＩＳ Ｋ６２６０に準拠し、デマッチャ屈曲疲労を測定した。
４）ムーニースコーチ： ＪＩＳ Ｋ６３００に準拠し、１２５℃で粘度が５ポイント上昇する時間（分）を測定した。
【００１８】
実施例１〜３および比較例１〜７
結果を以下の表１〜４に示す。
【表１】
表１の結果によると、比較例１〜３から、ＩＳＡＦ級またはＨＡＦ級のカーボンブラックを配合すると、３００％モジュラスは増大するが、ｔａｎδが高くなり低燃費化が図られないことが判る。比較例４から、ＧＰＦ級のカーボンブラックを配合すると、低燃費化は図られるが、３００％モジュラスが劣ることが判る。実施例１から、ＦＥＦ級のカーボンブラックと所定のシリカ表面処理カーボンブラックを併用すると、低燃費化および３００％モジュラスが共に向上していることが判る。
【００２０】
【表２】
【００２１】
【表３】
【００２２】
【表４】
【００２３】
【発明の効果】
以上の結果によると、本発明のタイヤサイドトレッド用ゴム組成物では、低燃費性と高３００％モジュラスの両立が図られると共に、加工性の点でも改善されている。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rubber composition for a tire side tread, and more particularly to a rubber composition for a tire side tread in which high modulus is achieved while achieving low fuel consumption and the peripheral rigidity of the tire is increased.
[0002]
[Prior art]
In a rubber composition for a tire for a tread member, in order to improve durability and improve dispersibility of silica, a technique of blending a silica surface-treated carbon black and a silane coupling agent is disclosed in, for example, Japanese Patent Laid-Open No. Hei 8- No. 277347 and the like. A rubber composition for a tire side tread in which rolling resistance (heat generation) is reduced without causing deterioration of workability and dispersibility and bending fatigue resistance is improved is also disclosed in JP-A-10-87886. It is disclosed in the publication. However, there has been a demand for a rubber member for a tire side tread that achieves a high modulus while reducing fuel consumption and increases the circumferential rigidity of the tire.
[0003]
[Patent Document 1]
JP-A-8-277347 [Patent Document 2]
Japanese Patent Laid-Open No. 10-87886
[Problems to be solved by the invention]
Increasing the modulus of the side tread in order to increase the steering stability of the tire is effective because it increases the circumferential rigidity of the tire. On the other hand, in recent years, the demand for lower rolling resistance (lower fuel consumption) of tires is severe from the viewpoint of resource saving, and not only cap treads but also members such as side treads are required to reduce heat generation. However, replacement with carbon black having a large particle size in order to achieve low heat generation causes a decrease in modulus, and replacement with carbon black having a small particle size in order to increase the modulus causes deterioration in low rolling resistance performance. Therefore, in the present invention, by replacing a part of carbon black with silica surface-treated carbon black, the tire side can achieve high modulus without deteriorating low rolling resistance performance (lower fuel consumption). It aims at providing the rubber composition for treads.
[0005]
[Means for Solving the Problems]
According to the present invention, at least one kind of rubber containing a diene-based component is used to add silica to the surface of a carbon black for rubber reinforcement having a nitrogen adsorption specific surface area (N 2 SA) of 90 to 140 m 2 / g. 50% by weight of the surface-treated carbon black and a rubber reinforcing carbon black having a nitrogen adsorption specific surface area (N 2 SA) of 20 to 100 m 2 / g so that the total amount is 40 to 70 parts by weight. There is provided a rubber composition for a tire side tread, which is further blended and further blended with a silane coupling agent in an amount of 2 to 15% by weight based on the blending amount of the surface-treated carbon black.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, by replacing a part of the carbon black reinforcing agent used in the rubber composition for a tire side tread with the silica surface-treated carbon black, the low rolling resistance performance (lower fuel consumption) is not deteriorated. It has been found that a high modulus can be achieved.
[0007]
In order to obtain a hard rubber material for side tread, carbon black having a nitrogen adsorption specific surface area (N 2 SA) of 90 to 140 m 2 / g is used as the reinforcing carbon black in the silica surface-treated carbon black used in the present invention. It is done. The untreated carbon black used together with the silica surface-treated carbon black is a carbon black having an FEF-grade nitrogen adsorption specific surface area (N 2 SA) having a smaller specific surface area of 20 to 100 m 2 / g. .
[0008]
The silica surface-treated carbon black used in the present invention is not particularly limited in its production method. For example, the carbon black is dispersed in water according to the method described in JP-A-63-63755, and the pH is adjusted. Is adjusted to 6 or more, preferably 10 to 11 or more, and while maintaining the temperature at 70 ° C. or more, preferably 85 to 95 ° C., for example, sodium silicate is hydrolyzed to deposit amorphous silica on the surface of carbon black Or it can be manufactured by depositing.
[0009]
As for the adhesion amount of the silica in silica surface treatment carbon black, 0.1 to 50 weight% is used suitably, More preferably, it is 0.3 to 30 weight%. If the amount of silica deposited is too small, the balance between tan δ in the high temperature range (40 ° C. to 100 ° C.) and tan δ in the low temperature range (near 0 ° C.) will not be improved. In addition, the cohesive force of the reinforcing agent becomes strong and the dispersibility during kneading becomes insufficient.
[0010]
The predetermined silica surface-treated carbon black and the predetermined untreated carbon black as reinforcing agents to be blended in the tire side tread rubber composition of the present invention have a total blending amount of 40 to 70 parts by weight, more preferably 50. It is used by blending so as to be ˜60 parts by weight. If the total amount of the surface-treated carbon black and the untreated carbon black is less than 40 parts by weight, the hardness is lowered and the handling stability is inferior. Therefore, it is not preferable. The blending ratio of the silica surface-treated carbon black and the untreated carbon black is preferably 10 to 80% by weight, more preferably 20 to 60% by weight of the surface-treated carbon black with respect to the total blended amount. It is used at such a blending ratio. If the blending amount of the surface-treated carbon black with respect to the total blending amount is less than 10% by weight, the desired effect cannot be obtained, and if it exceeds 80% by weight, the workability deteriorates, which is not preferable.
[0011]
As the silane coupling agent further blended in the tire side tread rubber composition of the present invention, any silane coupling agent conventionally used for general tires can be used. The use of (3-triethoxysilyl-propyl) disulfide is more preferable because the desired effect of the present invention can be achieved and the processability can be further improved. This silane coupling agent is blended in an amount of 2 to 15% by weight, preferably 5 to 10% by weight, based on the amount of silica surface-treated carbon black.
[0012]
Suitable rubber components for use in the rubber composition for tire side treads according to the present invention include natural rubber (NR), polyisoprene rubber (IR), styrene butadiene copolymer rubber (SBR), polybutadienene rubber (BR). ), Butyl rubber (IIR) and acrylonitrile butadiene copolymer rubber (NBR) can be used alone or as a blend rubber.
[0013]
The rubber composition for a tire side tread of the present invention includes, in addition to the essential components described above, tires such as ordinary vulcanization or crosslinking agents, vulcanization or crosslinking accelerators, various oils, anti-aging agents, and plasticizers. Various compounding agents blended in are appropriately blended as conventional general blending amounts.
[0014]
【Example】
EXAMPLES Hereinafter, although this invention is further demonstrated by an Example and a comparative example, it cannot be overemphasized that the technical scope of this invention is not limited by these Examples.
[0015]
Preparation of silica surface-treated carbon black A slurry of 100 g of carbon black (N234, manufactured by Mitsubishi Chemical) was prepared by a conventional method, heated to 90 ° C, and diluted with 20% JIS3 sodium silicate for 4 hours. The silica was deposited on the surface of the carbon black while maintaining the pH at 5 to 10 with dilute sulfuric acid and sodium hydroxide aqueous solution while adding with a metering pump. Thereafter, the pH was adjusted to 6, left for 6 hours, filtered, washed with water, and dried to obtain the desired product.
[0016]
Preparation of test samples The components shown in the following tables, excluding sulfur and vulcanization accelerators, were kneaded for 3 to 5 minutes with a 1.8 liter closed mixer and reached a temperature of 160C. A rubber composition was obtained by kneading sulfur and a vulcanization accelerator with an 8-inch open roll to the master batch that was occasionally released. The Mooney scorch of the rubber composition according to the formulation shown in Table 4 obtained here was measured. Next, this composition was press-vulcanized in a 15 cm × 15 cm × 0.2 cm mold at 160 ° C. for 20 minutes to produce a test piece (rubber sheet), whereby tan δ (60 ° C.), 300% modulus. The bending fatigue was measured and evaluated.
[0017]
Test Method 1) tan δ (60 ° C.): Measured using a viscoelastic spectrometer (manufactured by Toyo Seiki Co., Ltd.) at a temperature of 60 ° C., initial strain: 10%, dynamic strain: ± 2%, and frequency 20 Hz.
2) 300% modulus: 300% modulus was measured according to JIS K6251.
3) Bending fatigue: Dematcher bending fatigue was measured in accordance with JIS K6260.
4) Mooney scorch: Based on JIS K6300, the time (minutes) for the viscosity to increase by 5 points at 125 ° C. was measured.
[0018]
Examples 1-3 and Comparative Examples 1-7
The results are shown in Tables 1 to 4 below.
[Table 1]
According to the results in Table 1, it can be seen from Comparative Examples 1 to 3 that when ISAF grade or HAF grade carbon black is blended, the 300% modulus increases, but tan δ increases and fuel consumption cannot be reduced. From Comparative Example 4, it can be seen that when GPF grade carbon black is blended, fuel efficiency is reduced, but the 300% modulus is inferior. From Example 1, it can be seen that when FEF grade carbon black and a predetermined silica surface-treated carbon black are used in combination, both fuel economy and 300% modulus are improved.
[0020]
[Table 2]
[0021]
[Table 3]
[0022]
[Table 4]
[0023]
【The invention's effect】
According to the above results, the rubber composition for a tire side tread of the present invention achieves both low fuel consumption and high 300% modulus and is improved in terms of workability.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003209083A JP2005068199A (en) | 2003-08-27 | 2003-08-27 | Rubber composition for tire side tread |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003209083A JP2005068199A (en) | 2003-08-27 | 2003-08-27 | Rubber composition for tire side tread |
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| Publication Number | Publication Date |
|---|---|
| JP2005068199A true JP2005068199A (en) | 2005-03-17 |
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| JP2003209083A Pending JP2005068199A (en) | 2003-08-27 | 2003-08-27 | Rubber composition for tire side tread |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017524065A (en) * | 2014-08-01 | 2017-08-24 | 株式会社ブリヂストン | Rubber mixture comprising pyrolytic carbon black, method for preparing the mixture, and use of said mixture |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08277347A (en) * | 1994-11-11 | 1996-10-22 | Yokohama Rubber Co Ltd:The | Surface treated carbon black and rubber composition using the same |
| JP2000198883A (en) * | 1998-10-27 | 2000-07-18 | Sumitomo Rubber Ind Ltd | Tire tread rubber composition |
| JP2001031796A (en) * | 1999-07-21 | 2001-02-06 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
| JP2001139730A (en) * | 1999-11-11 | 2001-05-22 | Sumitomo Rubber Ind Ltd | Rubber composition for tire tread |
| JP2001164051A (en) * | 1999-12-06 | 2001-06-19 | Sumitomo Rubber Ind Ltd | Rubber composition for tire and pneumatic tire using the composition in tire tread |
| JP2001172432A (en) * | 1999-12-15 | 2001-06-26 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
-
2003
- 2003-08-27 JP JP2003209083A patent/JP2005068199A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08277347A (en) * | 1994-11-11 | 1996-10-22 | Yokohama Rubber Co Ltd:The | Surface treated carbon black and rubber composition using the same |
| JP2000198883A (en) * | 1998-10-27 | 2000-07-18 | Sumitomo Rubber Ind Ltd | Tire tread rubber composition |
| JP2001031796A (en) * | 1999-07-21 | 2001-02-06 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
| JP2001139730A (en) * | 1999-11-11 | 2001-05-22 | Sumitomo Rubber Ind Ltd | Rubber composition for tire tread |
| JP2001164051A (en) * | 1999-12-06 | 2001-06-19 | Sumitomo Rubber Ind Ltd | Rubber composition for tire and pneumatic tire using the composition in tire tread |
| JP2001172432A (en) * | 1999-12-15 | 2001-06-26 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017524065A (en) * | 2014-08-01 | 2017-08-24 | 株式会社ブリヂストン | Rubber mixture comprising pyrolytic carbon black, method for preparing the mixture, and use of said mixture |
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