JP3913346B2 - Rubber composition for tire tread - Google Patents

Rubber composition for tire tread Download PDF

Info

Publication number
JP3913346B2
JP3913346B2 JP35786997A JP35786997A JP3913346B2 JP 3913346 B2 JP3913346 B2 JP 3913346B2 JP 35786997 A JP35786997 A JP 35786997A JP 35786997 A JP35786997 A JP 35786997A JP 3913346 B2 JP3913346 B2 JP 3913346B2
Authority
JP
Japan
Prior art keywords
weight
rubber composition
silica
coupling agent
silane coupling
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
Application number
JP35786997A
Other languages
Japanese (ja)
Other versions
JPH11181161A (en
Inventor
康久 皆川
則子 八木
清繁 村岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Rubber Industries Ltd
Original Assignee
Sumitomo Rubber Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Rubber Industries Ltd filed Critical Sumitomo Rubber Industries Ltd
Priority to JP35786997A priority Critical patent/JP3913346B2/en
Publication of JPH11181161A publication Critical patent/JPH11181161A/en
Application granted granted Critical
Publication of JP3913346B2 publication Critical patent/JP3913346B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86Optimisation of rolling resistance, e.g. weight reduction 

Landscapes

  • Tires In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、タイヤトレッド用ゴム組成物に関する。
【0002】
【従来の技術】
従来から、タイヤの分野においては、転がり抵抗を低減させて低燃費性を達成し、かつウェットグリップ性能を向上させるために、補強剤としてシリカを配合することが行なわれている。このばあいには、シリカとゴム成分を化学的に結合させるためにシランカップリング剤が配合されている。
【0003】
ここで、シリカは表面にシラノール基が存在するためゴム組成物中において凝集しやすく、えられるゴム組成物の粘度が上昇し加工性に劣る。また、シラノール基の有する極性に起因して加硫促進剤などがシリカ表面に吸着し、加硫速度が小さくなるという問題もある。
【0004】
そのため、シランカップリング剤の配合量の理論値は通常シリカ配合量の数重量%であるが、特に密閉式混練り機を用いるばあいは、シランカップリング剤の反応効率に劣るため、シリカ配合量の数十重量%までの量のシランカップリング剤が配合されているのが現状である。
【0005】
しかし、比較的多量配合することにより未反応のまま残ったシランカップリング剤は、加工中のゴム焼け、加硫後のゴム組成物の破壊特性の低下を招き、低転がり抵抗(低燃費性)およびウェット性能に優れたタイヤトレッド用ゴム組成物はえられにくいという問題がある。
【0006】
【発明が解決しようとする課題】
上述の事実に鑑み、本発明の目的は、シリカの分散性を向上させ、かつシランカップリング剤の反応効率を高めることにより、低転がり抵抗(低燃費性)およびウェット性能に優れたタイヤトレッド用ゴム組成物をうることにある。
【0007】
【課題を解決するための手段】
本発明は、ジエン系ゴム、シリカ、シランカップリング剤、およびジブチルスズジラウレートを配合し、該ジブチルスズジラウレートの配合量がシランカップリング剤の配合量の0.5〜5重量%であるタイヤトレッド用ゴム組成物に関する。
【0008】
このばあい、シランカップリング剤の配合量をA重量部とし、シリカの配合量をB重量部としたばあいに、関係式(2):
0.02×B≦A≦0.2×B
を満たすのが好ましい。
【0011】
【発明の実施の形態】
本発明者らは、シリカおよびシランカップリング剤を配合してなるゴム組成物において、前記式(1):Rm Sn Y4-m (式中、Rはアルキル基、Yはアルキレート基、mは1〜4の整数)で示される化合物(以下、「特定の化合物」ともいう。)、特にジブチルスズジラウレートを配合したところ、えられるゴム組成物中においてシリカの分散性が向上し、かつシランカップリング剤の反応効率が高まることを見出し、本発明を完成するに至った。
【0012】
これは、前記特定の化合物が、シリカの表面の−Si−OHとシランカップリング剤のたとえば−Si(OC25)3との脱アルコール反応において触媒として作用するためであると考えられる。
【0013】
本発明において用いるジエン系ゴムとしては、従来からタイヤの分野において用いられているものであれば特に制限はないが、たとえば天然ゴム(NR)、スチレンブタジエンゴム(SBR)、イソプレンゴム(IR)、エチレンプロピレンジエンゴム(EPDM)、イソプレンブタジエンゴム(IBR)、ブタジエンゴム(BR)、アクリロニトリル−ブタジエンゴム(NBR)、ブチルゴム(IIR)などがあげられ、これらをそれぞれ単独で、または任意に組み合わせて用いることができる。なかでも、ゴムの強度、他のタイヤ材料との接着という点から、NR、SBR、IR、BRを用いるのが好ましい。
【0014】
つぎに、本発明において用いるシリカとしては、従来からタイヤの分野において用いられているものであれば特に制限はない。
【0015】
かかるシリカについて市販されているものとしては、たとえば日本シリカ(株)製のニップシールVN3、AQ、ER、NS、デグサジャパン社製のウルトラジルVN3などがあげられる。
【0016】
本発明におけるシリカの配合量としては、前記ジエン系ゴム100重量部に対して20〜80重量部であればよいが、ゴム強度という点から、40〜80重量部であるのが好ましく、さらに、硬すぎないという点から、40〜70重量部であるのが特に好ましい。
【0017】
つぎに、本発明のゴム組成物において配合するシランカップリング剤としては、従来からタイヤの分野において用いられているものであれば特に制限はないが、たとえばγ−メルカプトプロピルトリメトキシシラン、ビス−(3−トリエトキシシリルプロピル)テトラサルファイド、ビス−(トリエトキシシリルエチルトリレン)テトラサルファイドなどがあげられ、これらをそれぞれ単独で、または任意に組み合わせて用いることができる。なかでも、スコーチが問題にならないという点から、ビス−(3−トリエトキシシリルプロピル)テトラサルファイドを用いるのが好ましい。
【0018】
ここで、シランカップリング剤の配合量については、シランカップリング剤の配合量をA重量部とし、シリカの配合量をB重量部としたばあいに、関係式(2):0.02×B≦A≦0.2×B
を満たす量であるのが好ましい。たとえば、シリカの配合量が20重量部のばあいのシランカップリング剤の配合量は0.4〜4重量部であり、シリカの配合量が80重量部のばあいのシランカップリング剤の配合量は1.6〜16重量部である。
【0019】
つぎに、本発明においては、式(1):Rm Sn Y4-m (式中、Rはアルキル基、Yはアルキレート基、mは1〜4の整数)で示される化合物を配合する。
【0020】
式(1)において、Rはブチル、n−オクチルなどのアルキル基であり、また、Yはラウレート、マレートなどのアルキレート基であり、反応性という点から、ラウレートであるのが好ましい。mは1〜4の整数であるが、反応性という点から、2であるのが好ましい。
【0021】
具体的に前記式(1)で示される特定の化合物としては、たとえばジブチルスズジラウレート、ジブチルスズジマレート、ジブチルスズラウレートマレート、ジオクチルスズジラウレートなどがあげられ、それぞれ単独で、または任意に組み合わせて用いることができる。なかでも、反応性(触媒効率)が高いという点から、ジブチルスズジラウレートを用いるのが好ましい。
【0022】
本発明における前記特定の化合物の配合量としては、シランカップリング剤の配合量の0.5〜20重量%であればよいが、物性がよいという点から、シランカップリング剤の配合量の2.5〜5重量%であるのが好ましい。
【0023】
本発明のゴム組成物には、前記成分のほかに、たとえばタルク、クレー、カーボンブラックなどの充填剤、パラフィン系、アロマ系、ナフテン系のプロセスオイルなどの軟化剤、クマロンインデン樹脂、ロジン系樹脂、シクロペンタジエン系樹脂などの粘着付与剤、界面活性剤、イオウ、過酸化物などの加硫剤、加硫促進剤、ステアリン酸、酸化亜鉛などの加硫助剤、老化防止剤などを、本発明の効果を損なわない範囲で、必要に応じて適宜配合することができる。
【0024】
特に、カーボンブラックを配合するばあいの配合量としては、えられるゴム組成物の電気抵抗に応じて当業者であれば適宜選択して配合することができる。
【0025】
本発明のゴム組成物は、たとえばバンバリーミキサー、ニーダーなどの密閉式の混練り機、およびオープンロールなどを用いて、常法によりうることができる。
【0026】
以上のようにしてえられる本発明のゴム組成物は、タイヤのトレッドに好適に用いることができる。
【0027】
以下に、実施例を用いて本発明をさらに詳細に説明するが、本発明はこれらのみに制限されるものではない。
【0028】
【実施例】
まず、実施例において用いた各成分を表1にまとめて示す。
【0029】
【表1】

Figure 0003913346
【0030】
実施例1〜
表2に示す配合割合にしたがって、まず、イオウおよび加硫促進剤を除く成分を1.7リットルの密閉式バンバリーミキサーを用いてバンバリーミキサーの温度計が150℃以上になるまで3〜5分間混合した。ついで、えられた混合物とイオウ1.5重量部、加硫促進剤A1重量部および加硫促進剤B0.5重量部とをオープンロールで混合して未加硫のゴム組成物をえた。この未加硫のゴム組成物を170℃で15分間加硫することによって、加硫後の本発明のゴム組成物1〜をえた。
【0031】
[試験方法]
(1)引張り試験:JIS K6301にしたがって、3号ダンベルの形状のサンプルを作製し、引張り速度500mm/minで引張り試験を行ない、M100、M200、M300、TB、EBおよびHsを測定した。
【0032】
(2)損失正接(tanδ):岩本製作所(株)製のVES−SIII2を用いて、周波数10Hzで0℃(歪み±0.25%)と70℃(歪み±1%)におけるtanδを測定した。0℃におけるtanδの値が大きいほどウェット性能に優れており、70℃におけるtanδの値が小さいほど低転がり抵抗性に優れている。
【0033】
(3)摩耗試験:岩本製作所(株)製のFT−702を用いて、荷重2.5kgf、スリップ比40%の条件で摩耗性を測定した。評価は、後述する比較例1のばあいの値を100として指数で示した。指数が大きいほど耐摩耗性に優れている。
前記試験の結果を表2にまとめて示す。
【0034】
比較例1〜
表2に示す配合割合にかえたほかは、実施例1と同様にして比較ゴム組成物1〜をえ、実施例と同様の試験を行なった。結果を表2に示す。
【0035】
【表2】
Figure 0003913346
【0036】
実施例1、2および比較例3と比較例2の評価結果より、本発明のゴム組成物は耐摩耗性に優れ、ウェット性能はかわらないが、転がり抵抗が低いということがわかる。また、実施例と比較例1の評価結果より、本発明のゴム組成物はウェット性能が向上し、かつ転がり抵抗が低減しているということがわかる。
【0037】
【発明の効果】
本発明によれば、シリカの分散性を向上させ、かつシランカップリング剤の反応効率を高めることにより、低転がり抵抗(低燃費性)およびウェット性能に優れたタイヤトレッド用ゴム組成物をうることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rubber composition for a tire tread.
[0002]
[Prior art]
Conventionally, in the field of tires, silica has been blended as a reinforcing agent in order to reduce rolling resistance, achieve low fuel consumption, and improve wet grip performance. In this case, a silane coupling agent is blended in order to chemically bond the silica and the rubber component.
[0003]
Here, since silica has a silanol group on the surface, it easily aggregates in the rubber composition, and the viscosity of the resulting rubber composition is increased, resulting in poor processability. Another problem is that the vulcanization accelerator or the like is adsorbed on the silica surface due to the polarity of the silanol group, and the vulcanization rate is reduced.
[0004]
Therefore, the theoretical value of the compounding amount of the silane coupling agent is usually several weight% of the compounding amount of silica, but when using a closed kneader, the reaction efficiency of the silane coupling agent is inferior. At present, the amount of the silane coupling agent up to several tens of weight percent is blended.
[0005]
However, the silane coupling agent that remains unreacted by blending in a relatively large amount causes burnt rubber during processing, and deteriorates the fracture characteristics of the rubber composition after vulcanization, resulting in low rolling resistance (low fuel consumption). In addition, there is a problem that a rubber composition for a tire tread excellent in wet performance is difficult to obtain.
[0006]
[Problems to be solved by the invention]
In view of the above-mentioned facts, the object of the present invention is to improve the dispersibility of silica and increase the reaction efficiency of the silane coupling agent, so that the tire tread is excellent in low rolling resistance (low fuel consumption) and wet performance. It is to obtain a rubber composition.
[0007]
[Means for Solving the Problems]
The present invention is a tire tread rubber comprising a diene rubber, silica, a silane coupling agent, and dibutyltin dilaurate, wherein the amount of the dibutyltin dilaurate is 0.5 to 5% by weight of the amount of the silane coupling agent. Relates to the composition.
[0008]
In this case, when the blending amount of the silane coupling agent is A parts by weight and the blending amount of silica is B parts by weight, the relational expression (2):
0.02 × B ≦ A ≦ 0.2 × B
It is preferable to satisfy.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In the rubber composition obtained by blending silica and a silane coupling agent, the present inventors have the formula (1): R m Sn Y 4-m (wherein R is an alkyl group, Y is an alkylate group, When m is an integer of 1 to 4) (hereinafter also referred to as “specific compound”), particularly dibutyltin dilaurate, silica dispersibility is improved in the resulting rubber composition, and silane The inventors have found that the reaction efficiency of the coupling agent is increased, and have completed the present invention.
[0012]
This is the specific compound, believed to be to act as a catalyst in the dealcoholization reaction with for example -Si (OC 2 H 5) 3 of -Si-OH and the silane coupling agent on the surface of the silica.
[0013]
The diene rubber used in the present invention is not particularly limited as long as it is conventionally used in the tire field. For example, natural rubber (NR), styrene butadiene rubber (SBR), isoprene rubber (IR), Examples include ethylene propylene diene rubber (EPDM), isoprene butadiene rubber (IBR), butadiene rubber (BR), acrylonitrile-butadiene rubber (NBR), and butyl rubber (IIR), which are used alone or in any combination. be able to. Among these, NR, SBR, IR, and BR are preferably used from the viewpoints of rubber strength and adhesion to other tire materials.
[0014]
Next, the silica used in the present invention is not particularly limited as long as it is conventionally used in the field of tires.
[0015]
Examples of commercially available silicas include NIPSEAL VN3, AQ, ER, NS manufactured by Nippon Silica Co., Ltd. and Ultrazil VN3 manufactured by Degussa Japan.
[0016]
The amount of silica in the present invention may be 20 to 80 parts by weight with respect to 100 parts by weight of the diene rubber, but is preferably 40 to 80 parts by weight from the viewpoint of rubber strength, From the point that it is not too hard, it is especially preferable that it is 40-70 weight part.
[0017]
Next, the silane coupling agent to be blended in the rubber composition of the present invention is not particularly limited as long as it is conventionally used in the tire field. For example, γ-mercaptopropyltrimethoxysilane, bis- (3-Triethoxysilylpropyl) tetrasulfide, bis- (triethoxysilylethyltolylene) tetrasulfide and the like can be mentioned, and these can be used alone or in any combination. Of these, bis- (3-triethoxysilylpropyl) tetrasulfide is preferably used from the viewpoint that scorch is not a problem.
[0018]
Here, regarding the amount of the silane coupling agent, when the amount of the silane coupling agent is A part by weight and the amount of silica is B part by weight, the relational expression (2): 0.02 × B ≦ A ≦ 0.2 × B
It is preferable that the amount satisfies the above. For example, when the compounding amount of silica is 20 parts by weight, the compounding amount of the silane coupling agent is 0.4 to 4 parts by weight, and when the compounding amount of silica is 80 parts by weight, the compounding amount of the silane coupling agent is 1.6 to 16 parts by weight.
[0019]
Next, in the present invention, a compound represented by the formula (1): R m Sn Y 4-m (wherein R is an alkyl group, Y is an alkylate group, and m is an integer of 1 to 4) is blended. .
[0020]
In the formula (1), R is an alkyl group such as butyl or n-octyl, and Y is an alkylate group such as laurate or malate, and is preferably laurate from the viewpoint of reactivity. m is an integer of 1 to 4, and is preferably 2 from the viewpoint of reactivity.
[0021]
Specific examples of the specific compound represented by the formula (1) include, for example, dibutyltin dilaurate, dibutyltin dimaleate, dibutyltin laurate malate, dioctyltin dilaurate, and the like. Can do. Of these, dibutyltin dilaurate is preferably used because of its high reactivity (catalytic efficiency).
[0022]
The compounding amount of the specific compound in the present invention may be 0.5 to 20% by weight based on the compounding amount of the silane coupling agent. From the viewpoint of good physical properties, the compounding amount of the silane coupling agent is 2%. It is preferably 5 to 5% by weight.
[0023]
In addition to the above components, the rubber composition of the present invention includes, for example, fillers such as talc, clay, and carbon black, softeners such as paraffinic, aromatic, and naphthenic process oils, coumarone indene resin, and rosin. Resin, tackifiers such as cyclopentadiene resin, surfactants, vulcanizing agents such as sulfur and peroxides, vulcanization accelerators, vulcanization aids such as stearic acid and zinc oxide, anti-aging agents, etc. It can mix | blend suitably as needed in the range which does not impair the effect of this invention.
[0024]
In particular, the amount of carbon black to be blended can be appropriately selected and blended by those skilled in the art according to the electrical resistance of the resulting rubber composition.
[0025]
The rubber composition of the present invention can be obtained by a conventional method using, for example, a closed kneader such as a Banbury mixer or a kneader, and an open roll.
[0026]
The rubber composition of the present invention obtained as described above can be suitably used for tire treads.
[0027]
Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.
[0028]
【Example】
First, Table 1 summarizes each component used in the examples.
[0029]
[Table 1]
Figure 0003913346
[0030]
Examples 1 to 3
According to the blending ratio shown in Table 2, first, the components excluding sulfur and the vulcanization accelerator are mixed for 3 to 5 minutes using a 1.7 liter closed Banbury mixer until the Banbury mixer thermometer reaches 150 ° C. or higher. did. Subsequently, the obtained mixture was mixed with 1.5 parts by weight of sulfur, 1 part by weight of vulcanization accelerator A, and 0.5 part by weight of vulcanization accelerator B by an open roll to obtain an unvulcanized rubber composition. This unvulcanized rubber composition was vulcanized at 170 ° C. for 15 minutes to obtain vulcanized rubber compositions 1 to 3 of the present invention.
[0031]
[Test method]
(1) Tensile test: in accordance with JIS K6301, to prepare a sample in the form of No. 3 dumbbell, subjected to tensile test at a pulling speed of 500mm / min, M100, M200, M300, T B, was measured E B and Hs.
[0032]
(2) Loss tangent (tan δ): Using a VES-SIII2 manufactured by Iwamoto Seisakusho, tan δ at a frequency of 10 Hz was measured at 0 ° C. (strain ± 0.25%) and 70 ° C. (strain ± 1%). . The larger the value of tan δ at 0 ° C, the better the wet performance, and the smaller the value of tan δ at 70 ° C, the better the rolling resistance.
[0033]
(3) Abrasion test: Abrasion was measured under the conditions of a load of 2.5 kgf and a slip ratio of 40% using FT-702 manufactured by Iwamoto Seisakusho. The evaluation was shown as an index with the value of Comparative Example 1 described later as 100. The higher the index, the better the wear resistance.
The results of the test are summarized in Table 2.
[0034]
Comparative Examples 1 to 3
Comparative rubber compositions 1 to 3 were obtained in the same manner as in Example 1 except that the blending ratio shown in Table 2 was changed, and the same test as in the example was performed. The results are shown in Table 2.
[0035]
[Table 2]
Figure 0003913346
[0036]
From the evaluation results of Examples 1 and 2 and Comparative Examples 3 and 2, it can be seen that the rubber composition of the present invention has excellent wear resistance and wet performance, but has low rolling resistance. Moreover, it can be seen from the evaluation results of Example 3 and Comparative Example 1 that the rubber composition of the present invention has improved wet performance and reduced rolling resistance.
[0037]
【The invention's effect】
According to the present invention, a rubber composition for a tire tread excellent in low rolling resistance (low fuel consumption) and wet performance can be obtained by improving the dispersibility of silica and increasing the reaction efficiency of a silane coupling agent. Can do.

Claims (2)

ジエン系ゴム、シリカ、シランカップリング剤、およびジブチルスズジラウレートを配合し、該シリカの配合量がジエン系ゴム100重量部に対して40〜80重量部であり、該ジブチルスズジラウレートの配合量がシランカップリング剤の配合量の0.5〜5重量%であるタイヤトレッド用ゴム組成物。Diene rubber, silica, silane coupling agent, and dibutyltin dilaurate are blended, the blending amount of silica is 40 to 80 parts by weight with respect to 100 parts by weight of diene rubber, and the blending amount of dibutyltin dilaurate is silane cup A rubber composition for a tire tread that is 0.5 to 5% by weight of the amount of the ring agent. シランカップリング剤の配合量をA重量部とし、シリカの配合量をB重量部としたばあいに、関係式(2):
0.02×B≦A≦0.2×B
を満たす請求項1記載のタイヤトレッド用ゴム組成物。
When the blending amount of the silane coupling agent is A parts by weight and the blending amount of silica is B parts by weight, the relational expression (2):
0.02 × B ≦ A ≦ 0.2 × B
The rubber composition for a tire tread according to claim 1, wherein
JP35786997A 1997-12-25 1997-12-25 Rubber composition for tire tread Expired - Fee Related JP3913346B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35786997A JP3913346B2 (en) 1997-12-25 1997-12-25 Rubber composition for tire tread

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35786997A JP3913346B2 (en) 1997-12-25 1997-12-25 Rubber composition for tire tread

Publications (2)

Publication Number Publication Date
JPH11181161A JPH11181161A (en) 1999-07-06
JP3913346B2 true JP3913346B2 (en) 2007-05-09

Family

ID=18456360

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35786997A Expired - Fee Related JP3913346B2 (en) 1997-12-25 1997-12-25 Rubber composition for tire tread

Country Status (1)

Country Link
JP (1) JP3913346B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9724967B2 (en) 2012-10-15 2017-08-08 The Yokohama Rubber Co., Ltd. Rubber composition and pneumatic tire using the same

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6177495B1 (en) * 1999-02-24 2001-01-23 The Goodyear Tire & Rubber Company Silica-filled diene-based rubbers containing tin organoacid salt compounds
EP1148091B1 (en) * 2000-04-20 2007-05-09 The Goodyear Tire & Rubber Company Silica reinforced rubber composition and article with component thereof, including tires
US6573412B1 (en) 2000-05-12 2003-06-03 Bridgestone Corporation Chain-coupled polymeric alkoxide compounds having controlled viscosity
US6512035B1 (en) 2000-05-15 2003-01-28 Bridgestone Corporation Processability of silica-reinforced rubber containing a monofunctional alkyl tin compound
US6590017B1 (en) 2000-05-15 2003-07-08 Bridgestone Corporation Processability of silica-reinforced rubber containing an amide compound
US6313210B1 (en) 2000-07-31 2001-11-06 Bridgestone Coporation Silica-reinforced rubber compounds containing moisture stabilized polymers
US6608145B1 (en) 2000-10-13 2003-08-19 Bridgestone Corporation Silica-reinforced rubber compounded with an organosilane tetrasulfide silica coupling agent at high mixing temperature
US6433065B1 (en) 2000-10-13 2002-08-13 Bridgestone Corporation Silica-reinforced rubber compounded with mercaptosilanes and alkyl alkoxysilanes
AU2001214847A1 (en) * 2000-11-09 2002-05-21 Bridgestone Corporation Silica-reinforced rubber compounded with an alkoxysilane and a catalytic alkyl tin compound
ES2334510T3 (en) 2004-04-27 2010-03-11 Bridgestone Corporation MANUFACTURING PROCEDURE OF A TIRE COMPOSITION WITH IMPROVED SILICON REINFORCEMENT.
US8476374B2 (en) 2006-04-05 2013-07-02 Bridgestone Corporation Activated silane compound, rubber composition using the same and tire
JP6349872B2 (en) * 2014-03-31 2018-07-04 横浜ゴム株式会社 Rubber composition and pneumatic tire using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330649A (en) * 1976-09-02 1978-03-23 Shin Etsu Chem Co Ltd Curable polybutadiene compositions
JPH0717787B2 (en) * 1985-12-10 1995-03-01 株式会社ブリヂストン Pneumatic tire
JPS63215701A (en) * 1987-03-04 1988-09-08 Japan Synthetic Rubber Co Ltd Manufacture of silane-compound modified rubbery polymer
JP3933207B2 (en) * 1993-09-11 2007-06-20 住友ゴム工業株式会社 Rubber composition, method for producing the same, and tire using the composition
JP3625585B2 (en) * 1996-08-29 2005-03-02 横浜ゴム株式会社 Rubber composition
JP3608892B2 (en) * 1996-12-26 2005-01-12 横浜ゴム株式会社 Silica-containing rubber composition
JPH11106512A (en) * 1996-12-27 1999-04-20 Yokohama Rubber Co Ltd:The Modified polysiloxane, rubber composition made by using it, and rubber composition for tire tread

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9724967B2 (en) 2012-10-15 2017-08-08 The Yokohama Rubber Co., Ltd. Rubber composition and pneumatic tire using the same
DE112013005001B4 (en) 2012-10-15 2020-06-25 The Yokohama Rubber Co., Ltd. Rubber composition, vulcanized product and use of the vulcanized product in a pneumatic tire

Also Published As

Publication number Publication date
JPH11181161A (en) 1999-07-06

Similar Documents

Publication Publication Date Title
JP5495153B2 (en) Rubber composition and pneumatic tire using the same
US6998448B2 (en) Tire with tread of CIS 1,4-polybutadiene rich rubber composition which contains a functional styrene/butadiene elastomer, silica and coupling agent
JP3913346B2 (en) Rubber composition for tire tread
JP2005501950A (en) Rubber composition and method for increasing Mooney scorch value
US6469089B2 (en) Elastomeric compounds with improved wet skid resistance and methods to improve wet skid resistance
US6652641B2 (en) Process for production of modified carbon black for rubber reinforcement and rubber composition containing modified carbon black
JP2016169268A (en) Method for producing rubber composition for tire
JPH101564A (en) Rubber composition
JP4475736B2 (en) Rubber composition and pneumatic tire using the same
JP4318329B2 (en) Rubber composition for tire tread
JP4828026B2 (en) Improved electrical conductivity of silica filled rubber compositions
JP4076631B2 (en) Rubber composition
JP3996694B2 (en) Rubber composition
EP0997490B1 (en) Rubber composition for tyre tread
JP5051938B2 (en) Rubber composition for tire tread
JP3717356B2 (en) Rubber composition for tire tread
JP3996696B2 (en) Rubber composition
JP5318378B2 (en) Manufacturing method of rubber products
JP3915901B2 (en) Rubber compounding agent and compounding method
JP4067391B2 (en) Rubber composition for tire
JP2016183265A (en) Rubber composition for tire
JPH10152582A (en) Filler for reinforcing rubber and rubber composition using the same
JPH11263878A (en) Production of rubber article
JP3542306B2 (en) Rubber composition for tire tread
JP7516676B2 (en) Use of thiol-functionalized EPDM in rubber compositions

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040615

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060525

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060530

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060728

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20060728

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060919

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061109

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070123

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070131

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees