JP2006143811A - Rubber composition - Google Patents
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- JP2006143811A JP2006143811A JP2004333291A JP2004333291A JP2006143811A JP 2006143811 A JP2006143811 A JP 2006143811A JP 2004333291 A JP2004333291 A JP 2004333291A JP 2004333291 A JP2004333291 A JP 2004333291A JP 2006143811 A JP2006143811 A JP 2006143811A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
Description
本発明はゴム組成物に関し、更に詳しくは湿潤面でのグリップ力に優れ、耐摩耗性及び転がり抵抗が改良され、かつ耐経時変化に優れたゴム組成物に関する。この組成物はタイヤ用、特にタイヤトレッド用として使用するのに適している。 The present invention relates to a rubber composition, and more particularly to a rubber composition having excellent gripping force on a wet surface, improved wear resistance and rolling resistance, and excellent change with time. This composition is suitable for use as a tire, particularly as a tire tread.
特許文献１には末端にＳｉ基を化学結合させたＳＢＲを用いてシリカとの反応性に優れ、空気入りタイヤとしても低燃費性とグリップ性に優れるゴム組成物が開示されているが、ポリマー自身が水分との反応性が高く、経時的安定性も良好でないという問題があった。またグリーンタイヤとしてすでに認知され、ポリマーとして、ハイビニル含有スチレン−ブタジエン共重合体（ＳＳＢＲ）とポリブタジエンゴム（ＢＲ）を組み合わせたものもあるが、グリップ性が十分でないという問題がある。更に、特定のイソプレンを含有する共役ジエン系ゴムについては、特許文献２に記載されているが、これにもシリカとの相互作用が低いという問題がある。なお、シリカの分散に優れる特定のポリシロキサン化合物は特許文献３に記載されている。 Patent Document 1 discloses a rubber composition that is excellent in reactivity with silica using SBR having a Si group chemically bonded to the terminal, and that is excellent in fuel efficiency and grip as a pneumatic tire. There is a problem in that it is highly reactive with moisture and is not stable over time. Moreover, although it has already been recognized as a green tire and there is also a combination of a high vinyl-containing styrene-butadiene copolymer (SSBR) and a polybutadiene rubber (BR) as a polymer, there is a problem that grip properties are not sufficient. Furthermore, the conjugated diene rubber containing a specific isoprene is described in Patent Document 2, but this also has a problem of low interaction with silica. A specific polysiloxane compound excellent in silica dispersion is described in Patent Document 3.
従って、本発明は、例えばタイヤ用として用いた場合に、ウェットグリップ、耐摩耗性及び転がり抵抗に優れ、しかも経時安定性に優れたゴム組成物を提供することを目的とする。 Accordingly, an object of the present invention is to provide a rubber composition which is excellent in wet grip, wear resistance and rolling resistance when used for tires, for example, and excellent in stability with time.
本発明に従えば、（Ａ）１，３−ブタジエン単位３０〜９９．９重量％、イソプレン単位０．１〜１０重量％及び芳香族ビニル単量体単位０〜６０重量％からなる共役ジエン系ゴム３０〜９０重量部、（Ｂ）天然ゴム、ポリブタジエンゴム及びゴム（Ａ）とは異なる他のスチレン−ブタジエン共重合体からなる群から選ばれた少なくとも一種の共役ジエン系ゴム１０〜７０重量部、（Ｃ）シリカ及びカーボンブラック、（Ｄ）シリカ重量に対して０〜１５重量％の硫黄結合を含むアルコキシシラン化合物からなるシランカップリング剤並びに（Ｅ）シリカ重量に対し、２〜１５重量％の式（Ｉ）： According to the present invention, (A) a conjugated diene system comprising 30 to 99.9% by weight of 1,3-butadiene units, 0.1 to 10% by weight of isoprene units and 0 to 60% by weight of aromatic vinyl monomer units. 30 to 90 parts by weight of rubber, 10 to 70 parts by weight of at least one conjugated diene rubber selected from the group consisting of (B) natural rubber, polybutadiene rubber and another styrene-butadiene copolymer different from rubber (A) , (C) silica and carbon black, (D) a silane coupling agent comprising an alkoxysilane compound containing a sulfur bond of 0 to 15% by weight based on the silica weight, and (E) 2 to 15% by weight based on the silica weight Formula (I):
（式中、Ｒ1 は独立にメチル基、エチル基又はフェニル基を示し、Ｒ2 は独立に水素又は有機基を示し、Ｒ3 は独立にアルキル基又はアシル基を示し、ｍは０又は１以上の整数であり、ｎは１以上の整数である）の繰り返し単位を有する数平均分子量が２００〜１００，０００のポリシロキサンを含むゴム組成物であって、前記共役ジエン系ゴム（Ａ）が、重合に使用する単量体のうち、１，３−ブタジエンの８０重量％以上、イソプレンの８０重量％以下及び芳香族ビニル単量体の８０重量％以上を含む単量体混合物を重合し、次にこれに残りのイソプレンを添加して重合し、更に残りの１，３−ブタジエン及び芳香族ビニル単量体を添加重合し得られたポリマーにカップリング剤を反応させて得られたものであるゴム組成物が提供される。 (In the formula, R 1 independently represents a methyl group, an ethyl group or a phenyl group, R 2 independently represents hydrogen or an organic group, R 3 independently represents an alkyl group or an acyl group, and m represents 0 or 1) A rubber composition containing a polysiloxane having a number average molecular weight of 200 to 100,000, wherein the conjugated diene rubber (A) is an integer of at least 1 and n is an integer of 1 or more. A monomer mixture containing 80% by weight or more of 1,3-butadiene, 80% by weight or less of isoprene and 80% by weight or more of an aromatic vinyl monomer among monomers used for polymerization; Next, the remaining isoprene was added thereto for polymerization, and the remaining 1,3-butadiene and aromatic vinyl monomer were further added and polymerized to obtain a polymer obtained by reacting a coupling agent. Certain rubber compositions are provided.
本発明に従ったゴム組成物は、前記成分（Ａ）〜（Ｅ）を特定量配合することによって、以下に説明するように、湿潤面でのグリップの増加、耐摩耗性の向上及び転がり抵抗の低減を図ることができる。 The rubber composition according to the present invention contains a specific amount of the components (A) to (E), thereby increasing the grip on the wet surface, improving the wear resistance, and rolling resistance as described below. Can be reduced.
本発明に係るゴム組成物は、前述の如く、特定量の１，３−ブタジエン単位、特定量のイソプレン単位及び特定量の芳香族ビニル単量体単位を含有する共役ジエン系ゴム（Ａ）に共役ジエン系ゴム（Ｂ）を配合し、これにシリカ及びカーボンブラック（Ｃ）、特定のシランカップリング剤（Ｄ）及びポリシロキサン（Ｅ）を配合したゴム組成物である。 As described above, the rubber composition according to the present invention is a conjugated diene rubber (A) containing a specific amount of 1,3-butadiene units, a specific amount of isoprene units, and a specific amount of aromatic vinyl monomer units. It is a rubber composition in which a conjugated diene rubber (B) is blended, and silica and carbon black (C), a specific silane coupling agent (D), and polysiloxane (E) are blended therein.
本発明のゴム組成物に配合される共役ジエン系ゴム（Ａ）は１，３−ブタジエン単位３０〜９９．９重量％、好ましくは６０〜８５重量％、イソプレン単位０．１〜１０重量％、好ましくは０．２〜５重量％、及び芳香族ビニル単量体単位０〜６０重量％、好ましくは０〜４０重量％からなり、これは、１，３−ブタジエンの８０重量％以上、イソプレン８０重量％以下及び芳香族ビニル単量体（例えばスチレン）８０重量％以上からなる単量体混合物を先ず重合した後、これに残りのイソプレンを添加して重合し、更に残りの１，３−ブタジエン及び芳香族ビニル単量体を添加して重合し、そして得られたポリマーの活性末端とカップリング剤とを反応させて得られた重合体である。 Conjugated diene rubber (A) blended in the rubber composition of the present invention is 30 to 99.9% by weight of 1,3-butadiene units, preferably 60 to 85% by weight, 0.1 to 10% by weight of isoprene units, Preferably 0.2 to 5% by weight and 0 to 60% by weight, preferably 0 to 40% by weight of aromatic vinyl monomer units, which is 80% by weight or more of 1,3-butadiene, isoprene 80 First, a monomer mixture composed of 80% by weight or less of an aromatic vinyl monomer (for example, styrene) is polymerized, and then the remaining isoprene is added thereto for polymerization, and the remaining 1,3-butadiene is further polymerized. And an aromatic vinyl monomer to polymerize, and a polymer obtained by reacting the active terminal of the obtained polymer with a coupling agent.
本発明のゴム組成物は、共役ジエン系ゴム（Ａ）３０〜９０重量部、好ましくは３０〜６０重量部並びに天然ゴム、ポリブタジエンゴム及び（Ａ）以外の他のスチレン−ブタジエン共重合体からなる群から選ばれた少なくとも一種の共役ジエン系ゴム（Ｂ）１０〜７０重量部、好ましくは４０〜７０重量部を含むゴム組成物である。 The rubber composition of the present invention comprises 30 to 90 parts by weight, preferably 30 to 60 parts by weight of the conjugated diene rubber (A), and natural rubber, polybutadiene rubber and a styrene-butadiene copolymer other than (A). It is a rubber composition containing 10 to 70 parts by weight, preferably 40 to 70 parts by weight of at least one conjugated diene rubber (B) selected from the group.
本発明のゴム組成物に配合される共役ジエン系ゴム（Ａ）の配合量が少な過ぎると充分なグリップ力が得られないので好ましくなく、逆に多過ぎると耐摩耗性が悪くなり、転がり抵抗が大きくなるので好ましくない。共役ジエン系ゴム（Ｂ）の配合量が少な過ぎると耐摩耗性が悪く転がり抵抗が大きくなるので好ましくなく、逆に多過ぎるとグリップが低くなるので好ましくない。 If the blended amount of the conjugated diene rubber (A) blended in the rubber composition of the present invention is too small, it is not preferable because sufficient grip force cannot be obtained. Is unfavorable because of the increase. If the amount of the conjugated diene rubber (B) is too small, the wear resistance is poor and the rolling resistance increases, which is not preferable. On the other hand, if the amount is too large, the grip becomes low.
本発明に従えば、前記ジエン系ゴム（Ａ）及び（Ｂ）に対し、ジエン系ゴム（Ａ）及び（Ｂ）の合計量１００重量部当り、成分（Ｃ）として、好ましくは（ａ）窒素吸着比表面積（Ｎ2 ＳＡ）が１００〜３００ｍ2 ／ｇ、好ましくは１３０〜２５０ｍ2 ／ｇのシリカ１０〜１１７重量部、好ましくは３０〜９５重量部及び（ｂ）窒素吸着比表面積（Ｎ2 ＳＡ）が５０〜２００ｍ2 ／ｇ、好ましくは８０〜１８０ｍ2 ／ｇのカーボンブラック３〜１１０重量部、好ましくは５〜５０重量部であって、その合計量が４０〜１２０重量部、好ましくは５０〜９５重量部を配合する。なお、ここでＮ2 ＳＡはＪＩＳ Ｋ６２２１に準拠して測定したものである。シリカ及びカーボンブラック（Ｃ）の配合量が多過ぎると転がり抵抗が大きくなるおそれがあるので好ましくない。 According to the present invention, the component (C) is preferably (a) nitrogen per 100 parts by weight of the total amount of the diene rubbers (A) and (B) with respect to the diene rubbers (A) and (B). 10 to 117 parts by weight, preferably 30 to 95 parts by weight of silica having an adsorption specific surface area (N 2 SA) of 100 to 300 m 2 / g, preferably 130 to 250 m 2 / g, and (b) nitrogen adsorption specific surface area (N 2 SA) is 50 to 200 m 2 / g, preferably 80 to 180 m 2 / g of carbon black 3 to 110 parts by weight, preferably 5 to 50 parts by weight, and the total amount is 40 to 120 parts by weight, preferably 50 to 95 parts by weight are blended. Here, N 2 SA is measured in accordance with JIS K6221. If the amount of silica and carbon black (C) is too large, rolling resistance may increase, which is not preferable.
本発明に係るゴム組成物には、前記成分（Ａ），（Ｂ）及び（Ｃ）に加えて、（Ｄ）シリカ重量に対して０〜１５重量％、好ましくは５〜１０重量％の硫黄結合を含むアルコキシシラン化合物からなるシランカップリング剤を配合する。シランカップリング剤（Ｄ）の配合量が多過ぎると未反応のシランカップリング剤が表面にブリードするので好ましくない。このようなシランカップリング剤としては例えば以下のものをあげることができる。ビス（３−トリエトキシシリルプロピル）テトラスルフィド、ビス（２−トリエトキシシリルエチル）テトラスルフィド、ビス（３−トリメトキシシリルプロピル）テトラスルフィド、ビス（２−トリメトキシシリルエチル）テトラスルフィド、３−メルカプトプロピルトリメトキシシラン、３−メルカプトプロピルトリエトキシシラン、２−メルカプトエチルトリメトキシシラン、２−メルカプトエチルトリエトキシシラン、３−ニトロプロピルトリメトキシシラン、３−ニトロプロピルトリエトキシシラン、３−クロロプロピルトリメトキシシラン、３−クロロプロピルトリエトキシシラン、２−クロロエチルトリメトキシシラン、２−クロロエチルトリエトキシシラン、３−トリメトキシシリルプロピル−Ｎ，Ｎ−ジメチルチオカルバモイルテトラスルフィド、３−トリエトキシシリルプロピル−Ｎ，Ｎ−ジメチルチオカルバモイルテトラスルフィド、２−トリエトキシシリルエチル−Ｎ，Ｎ−ジメチルチオカルバモイルテトラスルフィド、３−トリメトキシシリルプロピルベンゾチアゾールテトラスルフィド、３−トリエトキシシリルプロピルベンゾチアゾールテトラスルフィド、３−トリエトキシシリルプロピルメタクリレートモノスルフィド、３−トリメトキシシリルプロピルメタクリレートモノスルフィドなどがあげられ、カップリング剤添加効果とコストとの両立の点から、ビス（３−トリエトキシシリルプロピル）テトラスルフィドなどが好ましい。 In the rubber composition according to the present invention, in addition to the components (A), (B) and (C), (D) 0 to 15% by weight, preferably 5 to 10% by weight of sulfur based on the weight of silica. A silane coupling agent composed of an alkoxysilane compound containing a bond is blended. If the amount of the silane coupling agent (D) is too large, unreacted silane coupling agent bleeds to the surface, which is not preferable. Examples of such silane coupling agents include the following. Bis (3-triethoxysilylpropyl) tetrasulfide, bis (2-triethoxysilylethyl) tetrasulfide, bis (3-trimethoxysilylpropyl) tetrasulfide, bis (2-trimethoxysilylethyl) tetrasulfide, 3- Mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 2-mercaptoethyltrimethoxysilane, 2-mercaptoethyltriethoxysilane, 3-nitropropyltrimethoxysilane, 3-nitropropyltriethoxysilane, 3-chloropropyl Trimethoxysilane, 3-chloropropyltriethoxysilane, 2-chloroethyltrimethoxysilane, 2-chloroethyltriethoxysilane, 3-trimethoxysilylpropyl-N, N-dimethylthiocarba Yl tetrasulfide, 3-triethoxysilylpropyl-N, N-dimethylthiocarbamoyl tetrasulfide, 2-triethoxysilylethyl-N, N-dimethylthiocarbamoyl tetrasulfide, 3-trimethoxysilylpropylbenzothiazole tetrasulfide, 3 -Triethoxysilylpropylbenzothiazole tetrasulfide, 3-triethoxysilylpropyl methacrylate monosulfide, 3-trimethoxysilylpropyl methacrylate monosulfide, and the like. From the viewpoint of both the effect of adding a coupling agent and cost, bis ( 3-triethoxysilylpropyl) tetrasulfide and the like are preferable.
本発明のゴム組成物には、更に前記式（Ｉ）のポリシロキサン（Ｅ）を配合する。式（Ｉ）の繰り返し単位（式中、Ｒ1 は独立にメチル基、エチル基又はフェニル基を示し、Ｒ2 は独立に水素又は有機基（例えばメチル基、エチル基、スチレン残基、ジビニルベンゼン残基、リモネン残基、ブタジエン残基、イソプレン残基）を示し、Ｒ3 は独立にアルキル基又はアシル基を示し、ｍは０又は１以上の整数であり、ｎは１以上の整数である）の繰り返し単位を有する数平均分子量が２００〜１００，０００、好ましくは５００〜１０，０００の特定のポリシロキサンをシリカ重量に対し、２〜１５重量％、好ましくは５〜１２重量％配合する。このポリシロキサン（Ｅ）の配合量が多過ぎると表面にブリードしてくるので好ましくない。 The rubber composition of the present invention is further blended with the polysiloxane (E) of the formula (I). Repeating unit of formula (I) (wherein R 1 independently represents a methyl group, an ethyl group or a phenyl group, R 2 independently represents hydrogen or an organic group (for example, a methyl group, an ethyl group, a styrene residue, divinylbenzene) Residue, limonene residue, butadiene residue, isoprene residue), R 3 independently represents an alkyl group or an acyl group, m is 0 or an integer of 1 or more, and n is an integer of 1 or more. ) Specific polysiloxane having a number average molecular weight of 200 to 100,000, preferably 500 to 10,000, is contained in an amount of 2 to 15% by weight, preferably 5 to 12% by weight, based on the silica weight. If the amount of the polysiloxane (E) is too large, the surface will bleed, which is not preferable.
本発明に係るゴム組成物には、前記した必須成分に加えて、加硫又は架橋剤、加硫又は架橋促進剤、各種オイル、老化防止剤、可塑性剤、充填剤などのタイヤ用、その他一般ゴム用に一般的に配合されている各種添加剤を配合することができ、かかる添加剤は一般的な方法で混練して組成物とし、加硫又は架橋するのに使用することができる。これらの添加剤の配合量は本発明の目的に反しない限り、従来の一般的な配合量とすることができる。 In addition to the essential components described above, the rubber composition according to the present invention includes a vulcanization or cross-linking agent, a vulcanization or cross-linking accelerator, various oils, an anti-aging agent, a plasticizer, a filler and other tires, and other general Various additives generally blended for rubber can be blended, and such additives can be kneaded by a general method to form a composition, which can be used for vulcanization or crosslinking. The blending amounts of these additives may be conventional conventional blending amounts as long as the object of the present invention is not adversely affected.
以下、実施例によって本発明を更に説明するが、本発明の範囲をこれらの実施例に限定するものでないことはいうまでもない。 EXAMPLES Hereinafter, although an Example demonstrates this invention further, it cannot be overemphasized that the scope of the present invention is not limited to these Examples.
実施例１〜２及び比較例１〜４
共役ジエン系ゴム（Ａ）（ＳＢＲ−１の調製）
特願２００２−３３８７４１号公報の段落〔００１９〕〜〔００４６〕に記載の方法に従って、特に実施例１の方法に準じて製造した。
Examples 1-2 and Comparative Examples 1-4
Conjugated diene rubber (A) (Preparation of SBR-1)
It was produced according to the method described in paragraphs [0019] to [0046] of Japanese Patent Application No. 2002-338741, particularly according to the method of Example 1.
サンプルの調製
表Ｉに示す配合において、加硫促進剤と硫黄を除く成分を３リットルの密閉型ミキサーで５分間混練し、１５０℃に達したときに放出してマスターバッチを得た。このマスターバッチに加硫促進剤と硫黄をオープンロールで混練し、ゴム組成物を得た。
Sample preparation In the formulation shown in Table I, components other than the vulcanization accelerator and sulfur were kneaded in a 3 liter closed mixer for 5 minutes and released when the temperature reached 150 ° C to obtain a master batch. A vulcanization accelerator and sulfur were kneaded with this master batch with an open roll to obtain a rubber composition.
次に得られたゴム組成物を１５×１５×０．２cmの金型中で１６０℃で２０分間加硫して加硫ゴムシートを調製し、以下に示す試験法でゴム物性測定した。結果は表Ｉに示す。 Next, the obtained rubber composition was vulcanized in a 15 × 15 × 0.2 cm mold at 160 ° C. for 20 minutes to prepare a vulcanized rubber sheet, and the physical properties of the rubber were measured by the following test methods. The results are shown in Table I.
表Ｉ脚注
＊１：日本ゼオン（株）製ＳＢＲ（Ｎｉｐｏｌ ＳＢＲ １７２１）
＊２：ＳＢＲ−１（Ｓｔ ２０／Ｖｎ ６０、イソプレン０．９％ 分子量４９万 ＭＬ1+4 ５５）
＊３：日本ゼオン（株）製ＢＲ（Ｎｉｐｏｌ ＢＲ １２２０）
＊４：天然ゴム（ＴＳＲ ２０）
＊５：Ｒｈｏｄｉａ社製シリカ（Ｎ2 ＳＡ：１６５ｍ2 ／ｇ）
＊６：日本ユニカー（株）製有機シラン（ＫＩ−９０Ｅ）
＊７：デグッサ社製シランカップリング剤
＊８：正同化学工業（株）製酸化亜鉛３種
＊９：昭和キャボット（株）製カーボンブラック（Ｎ2 ＳＡ：１１９ｍ2 ／ｇ）
＊１０：昭和キャボット（株）製カーボンブラック（Ｎ2 ＳＡ：９２ｍ2 ／ｇ）
＊１１：日本油脂（株）製工業用ステアリン酸
＊１２：フレキシス社製ＳＡＮＴＯＦＬＥＸ６ＰＰＤ
＊１３：フレキシス社製ＦＬＥＣＴＯＬ ＴＭＱ
＊１４：日本精蝋（株）製パラフィンワックス
＊１５：昭和シェル石油（株）製アロマオイル
＊１６：鶴見化学工業（株）製５％油入微粉硫黄
＊１７：フレキシス社製Ｎ−シクロヘキシル−２−ベンゾチアゾリルスルフェンアミド
＊１８：フレキシス社製ジフェニルグラニジン
Table I footnote * 1: SBR manufactured by Nippon Zeon Co., Ltd. (Nipol SBR 1721)
* 2: SBR-1 (St 20 / Vn 60, isoprene 0.9%, molecular weight 490,000 ML 1 + 4 55)
* 3: BR manufactured by Nippon Zeon Co., Ltd. (Nipol BR 1220)
* 4: Natural rubber (TSR 20)
* 5: Silica manufactured by Rhodia (N 2 SA: 165 m 2 / g)
* 6: Organosilane (KI-90E) manufactured by Nippon Unicar Co., Ltd.
* 7: Sinus coupling agent manufactured by Degussa * 8: Zinc oxide 3 types manufactured by Shodo Chemical Industry Co., Ltd. * 9: Carbon black manufactured by Showa Cabot Corporation (N 2 SA: 119 m 2 / g)
* 10: Carbon black manufactured by Showa Cabot Co., Ltd. (N 2 SA: 92 m 2 / g)
* 11: Industrial stearic acid manufactured by NOF Corporation * 12: SANTOFLEX 6PPD manufactured by Flexis
* 13: FLECTOL TMQ manufactured by Flexis
* 14: Paraffin wax manufactured by Nippon Seiwa Co., Ltd. * 15: Aroma oil manufactured by Showa Shell Sekiyu K.K. 2-Benzothiazolylsulfenamide * 18: Diphenyl granidine from Flexis
物性評価試験法
ＪＩＳ硬度（２０℃）＝ＪＩＳ Ｋ６２５３のスプリング式硬さ試験Ａ型を用いて２０℃のＪＩＳ硬度を測定した。
３００％モジュラス：ＪＩＳ ６２５１に準拠して測定。
ｔａｎδ（０℃及び６０℃）：粘弾性スペクトロメータ（東洋精機製作所）を用い０℃及び６０℃で、それぞれ初期歪：１０％、動的歪：±２％、周波数２０Hzの条件下で測定した。
ランボーン摩耗：ランボーン試験機（岩本製作所）を用いて温度２０℃、スリップ率５０％条件下で摩耗減量を測定し、比較例１を１００として指数表示した。数値が大なる程、耐摩耗性が良好であることを示す。
Physical property evaluation test method JIS hardness (20 ° C.) = JIS K6253 spring type hardness test A type was used to measure 20 ° C. JIS hardness.
300% modulus: Measured according to JIS 6251.
tan δ (0 ° C. and 60 ° C.): Measured using a viscoelastic spectrometer (Toyo Seiki Seisakusho) at 0 ° C. and 60 ° C. under conditions of initial strain: 10%, dynamic strain: ± 2%, and frequency 20 Hz, respectively. .
Lambourne wear: wear loss was measured using a Lambone tester (Iwamoto Seisakusho) under the conditions of a temperature of 20 ° C. and a slip rate of 50%. It shows that abrasion resistance is so favorable that a numerical value is large.
表Ｉの結果から明らかなように、本発明に従えば、湿潤面でのグリップ力の増加、耐摩耗性の向上及び転がり抵抗の低減を図ることができるので、本発明のゴム組成物は高性能な乗用車用タイヤのキャップトレッドとして有用である。 As is apparent from the results in Table I, according to the present invention, it is possible to increase the grip force on the wet surface, improve the wear resistance, and reduce the rolling resistance. It is useful as a cap tread for high-performance passenger car tires.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
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| JP2004333291A JP2006143811A (en) | 2004-11-17 | 2004-11-17 | Rubber composition |
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| JP2004333291A JP2006143811A (en) | 2004-11-17 | 2004-11-17 | Rubber composition |
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| JP2006143811A true JP2006143811A (en) | 2006-06-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006143818A (en) * | 2004-11-17 | 2006-06-08 | Yokohama Rubber Co Ltd:The | Rubber composition |
| JP2006152200A (en) * | 2004-12-01 | 2006-06-15 | Yokohama Rubber Co Ltd:The | Rubber composition for tire |
| DE102010029033A1 (en) | 2009-05-20 | 2010-11-25 | The Yokohama Rubber Co., Ltd. | A rubber composition for a tire tread and a pneumatic tire using the same |
| JP2019194290A (en) * | 2018-05-02 | 2019-11-07 | 住友ゴム工業株式会社 | Tire rubber composition and pneumatic tire |
| JP2019199527A (en) * | 2018-05-16 | 2019-11-21 | 住友ゴム工業株式会社 | Rubber composition for tire, and pneumatic tire |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09111044A (en) * | 1995-10-20 | 1997-04-28 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
| JP2002220492A (en) * | 2001-01-24 | 2002-08-09 | Yokohama Rubber Co Ltd:The | Production method of rubber composition for tire |
| JP2002338744A (en) * | 2001-03-16 | 2002-11-27 | Nippon Zeon Co Ltd | Oil extended rubber and rubber composition |
| JP2002338741A (en) * | 2001-03-16 | 2002-11-27 | Nippon Zeon Co Ltd | Rubber composition |
| JP2006143818A (en) * | 2004-11-17 | 2006-06-08 | Yokohama Rubber Co Ltd:The | Rubber composition |
-
2004
- 2004-11-17 JP JP2004333291A patent/JP2006143811A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09111044A (en) * | 1995-10-20 | 1997-04-28 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
| JP2002220492A (en) * | 2001-01-24 | 2002-08-09 | Yokohama Rubber Co Ltd:The | Production method of rubber composition for tire |
| JP2002338744A (en) * | 2001-03-16 | 2002-11-27 | Nippon Zeon Co Ltd | Oil extended rubber and rubber composition |
| JP2002338741A (en) * | 2001-03-16 | 2002-11-27 | Nippon Zeon Co Ltd | Rubber composition |
| JP2006143818A (en) * | 2004-11-17 | 2006-06-08 | Yokohama Rubber Co Ltd:The | Rubber composition |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006143818A (en) * | 2004-11-17 | 2006-06-08 | Yokohama Rubber Co Ltd:The | Rubber composition |
| JP2006152200A (en) * | 2004-12-01 | 2006-06-15 | Yokohama Rubber Co Ltd:The | Rubber composition for tire |
| DE102010029033A1 (en) | 2009-05-20 | 2010-11-25 | The Yokohama Rubber Co., Ltd. | A rubber composition for a tire tread and a pneumatic tire using the same |
| US8440757B2 (en) | 2009-05-20 | 2013-05-14 | The Yokohama Rubber Co., Ltd. | Rubber composition for a tire tread and pneumatic tire using the same |
| JP2019194290A (en) * | 2018-05-02 | 2019-11-07 | 住友ゴム工業株式会社 | Tire rubber composition and pneumatic tire |
| JP7151154B2 (en) | 2018-05-02 | 2022-10-12 | 住友ゴム工業株式会社 | Tire rubber composition and pneumatic tire |
| JP2019199527A (en) * | 2018-05-16 | 2019-11-21 | 住友ゴム工業株式会社 | Rubber composition for tire, and pneumatic tire |
| JP7102925B2 (en) | 2018-05-16 | 2022-07-20 | 住友ゴム工業株式会社 | Rubber composition for tires and pneumatic tires |
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