JP2007302813A - Rubber composition for tire tread - Google Patents
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- JP2007302813A JP2007302813A JP2006133902A JP2006133902A JP2007302813A JP 2007302813 A JP2007302813 A JP 2007302813A JP 2006133902 A JP2006133902 A JP 2006133902A JP 2006133902 A JP2006133902 A JP 2006133902A JP 2007302813 A JP2007302813 A JP 2007302813A
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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
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Abstract
Description
本発明は、タイヤトレッド用ゴム組成物に関し、更に詳細には、耐摩耗性、転がり抵抗性及びウェットスキッド性能を同時に満足するだけでなく、環境・安全性においても優れたシリカ配合系タイヤトレッド用ゴム組成物に関する。 The present invention relates to a rubber composition for a tire tread, and more specifically, for a silica-compounded tire tread that not only satisfies wear resistance, rolling resistance and wet skid performance at the same time, but also has excellent environmental and safety characteristics. The present invention relates to a rubber composition.
従来、ゴムに対する相溶性が高く、可塑化効果が優れていることから、ゴム用可塑剤として石油系のエキストラクトが使用されてきたが、現今、環境安全性の観点から石油系代替油として芳香族成分の比率を減らして安全性を高めたオイルが検討されている。しかしながら、その芳香族成分の比率が下がることで、特に、シリカ配合系のタイヤトレッド用ゴムの場合には、ウェットスキッド性能が低下したり、耐摩耗性が悪化するだけでなく、ムーニー粘度が十分に下がらず、加工性も悪化するという問題点があった。 Conventionally, petroleum-based extracts have been used as rubber plasticizers because of their high compatibility with rubber and excellent plasticizing effect. Oils with increased safety by reducing the proportion of tribe components are being investigated. However, the ratio of the aromatic component decreases, especially in the case of silica compounded tire tread rubber, not only the wet skid performance deteriorates but the wear resistance deteriorates, and the Mooney viscosity is sufficient. However, there was a problem that the workability deteriorated.
前記したシリカ配合系ゴム組成物に対して、側鎖の不飽和結合をエポキシ化したエポキシ化変性スチレン−ブタジエンゴムを所定量ゴム成分中に配合することにより、弾性率の実質的低下を招くことなく耐熱老化性を改善する技術が、以下の特許文献１により提案されている。また、熱安定性、着色性に優れた安定性を有する塩化ビニル系樹脂組成物を得る目的で、当該塩化ビニル系樹脂組成物中にヨウ素価６０以上のパーム油をエポキシ化して得られるエポキシ化パーム油を所定量配合する技術が、以下の特許文献２により提案されている。しかしながら、特定のエポキシ化合物をゴム用の可塑剤として、タイヤトレッド用ゴム組成物、特にシリカ配合系のタイヤトレッド用ゴム組成物に配合する技術は、未だ提案されていない。 By blending a predetermined amount of epoxidized modified styrene-butadiene rubber with epoxidized unsaturated bonds in the side chain into the above-described silica compounded rubber composition, the elastic modulus is substantially lowered. The following patent document 1 proposes a technique for improving heat aging resistance. In addition, for the purpose of obtaining a vinyl chloride resin composition having excellent thermal stability and colorability, epoxidation obtained by epoxidizing palm oil having an iodine value of 60 or more in the vinyl chloride resin composition A technique for blending a predetermined amount of palm oil is proposed in Patent Document 2 below. However, a technique for blending a specific epoxy compound into a rubber composition for tire treads, in particular, a rubber composition for tire treads based on silica has not been proposed as a plasticizer for rubber.
よって、本発明では、所定のＳＢＲを含むジエン系ゴム／シリカ配合系タイヤトレッド用ゴム組成物に対して、不飽和脂肪酸又はその誘導体をエポキシ化した特定のエポキシ化合物を可塑剤として添加することにより、環境上安全で、耐摩耗性、転がり抵抗性及びウェットスキッド性能の三特性を改良するだけでなく、ムーニー粘度の低下も大きく加工性が大幅に改善されたタイヤトレッド用ゴム組成物を提供することを目的とする。 Therefore, in the present invention, a specific epoxy compound obtained by epoxidizing an unsaturated fatty acid or a derivative thereof is added as a plasticizer to a diene rubber / silica blended tire tread rubber composition containing a predetermined SBR. Provided is a rubber composition for a tire tread that is environmentally safe, not only improves three properties of wear resistance, rolling resistance, and wet skid performance, but also greatly reduces Mooney viscosity and greatly improves processability. For the purpose.
本発明によれば、ブタジエン部分のビニル含量が２０〜６５重量％でスチレン含量が２０〜５０重量％のスチレン−ブタジエン共重合体ゴム４０重量部以上を含むゴム成分１００重量部とシリカ５〜７０重量部を含む配合系に対して、下記一般式（１）で表される不飽和脂肪酸又はその誘導体をエポキシ化したエポキシ化合物０．１〜５０重量部を配合してなるタイヤトレッド用ゴム組成物が提供される。
Ｒ1−(ＣＨ＝ＣＨ−ＣＨ2)m−(ＣＨ2)n−ＣＯＯＲ2 （１）
（式中、Ｒ1は、炭素数１〜１０個のアルキル基を示し、Ｒ2は、水素又は炭素数１〜１０個のアルキル基、アリール基、アルケニル基、（メタ）アクリル基もしくはアルコキシシリル基を示し、ｍ及びｎは、１〜２０の整数である。）
According to the present invention, 100 parts by weight of a rubber component containing 40 parts by weight or more of a styrene-butadiene copolymer rubber having a vinyl content of the butadiene portion of 20 to 65% by weight and a styrene content of 20 to 50% by weight and 5 to 70 parts of silica. The rubber composition for tire treads which mix | blends 0.1-50 weight part of epoxy compounds which epoxidized unsaturated fatty acid represented by the following general formula (1) or its derivative (s) with respect to the compounding system containing a weight part. Is provided.
R 1 — (CH═CH—CH 2 ) m — (CH 2 ) n —COOR 2 (1)
(In the formula, R 1 represents an alkyl group having 1 to 10 carbon atoms, and R 2 represents hydrogen, an alkyl group having 1 to 10 carbon atoms, an aryl group, an alkenyl group, a (meth) acryl group or an alkoxysilyl group. And m and n are integers of 1 to 20.)
また、本発明によれば、前記タイヤトレッド用ゴム組成物に配合される前記エポキシ化合物のヨウ素価が６０以上であることを特徴とする、タイヤトレッド用ゴム組成物が提供される。 Moreover, according to this invention, the iodine value of the said epoxy compound mix | blended with the said rubber composition for tire treads is 60 or more, The rubber composition for tire treads characterized by the above-mentioned is provided.
本発明では、前記した所定のＳＢＲを含むジエン系ゴム／シリカ配合系タイヤトレッド用ゴム組成物に対して、不飽和脂肪酸又はその誘導体をエポキシ化した特定のエポキシ化合物を可塑剤として所定量添加することにより、耐摩耗性、転がり抵抗性及びウェットスキッド性能の三特性を改良するだけでなく、ムーニー粘度の低下も大きく加工性が大幅に改善されることを見出したものである。 In the present invention, a predetermined amount of a specific epoxy compound obtained by epoxidizing an unsaturated fatty acid or a derivative thereof is added as a plasticizer to a diene rubber / silica blended tire tread rubber composition containing the predetermined SBR. As a result, it has been found that not only the three properties of wear resistance, rolling resistance and wet skid performance are improved, but also the Mooney viscosity is greatly reduced and the workability is greatly improved.
本発明のタイヤトレッド用ゴム組成物に用いられるゴム成分のＳＢＲとしては、そのブタジエン部分のビニル含量が２０〜６５重量％でスチレン含量が２０〜５０重量％であるＳＢＲが使用される。当該ＳＢＲにおけるスチレン含量が２０重量％未満では、耐ウェットスキッド性能の低下を招くので好ましくなく、逆に５０重量％を超えると、転がり抵抗が悪化するので好ましくない。また、当該ＳＢＲにおけるビニル含量が２０重量部未満では、耐ウェットスキッド性能の低下を招くので好ましくなく、逆に６５重量％を超えると、転がり抵抗及び耐摩耗性が悪化するので好ましくない。 As the SBR of the rubber component used in the rubber composition for a tire tread of the present invention, SBR having a vinyl content of 20 to 65% by weight and a styrene content of 20 to 50% by weight is used. When the styrene content in the SBR is less than 20% by weight, the wet skid resistance performance is deteriorated, which is not preferable. On the other hand, when it exceeds 50% by weight, the rolling resistance is deteriorated, which is not preferable. Further, if the vinyl content in the SBR is less than 20 parts by weight, it is not preferable because the wet skid resistance performance is lowered. Conversely, if it exceeds 65% by weight, the rolling resistance and wear resistance are deteriorated.
本発明のタイヤトレッド用ゴム組成物におけるゴム成分として配合される前記ＳＢＲは、全体のゴム成分１００重量部に対して４０重量部以上の量とすることが必要である。このＳＢＲの配合量が４０重量部未満であると、耐ウェットスキッド性能の低下を招くので好ましくない。当該タイヤトレッド用ゴム組成物における他のゴム成分としては、ジエン系ゴム、例えば、天然ゴム（ＮＲ）、各種ブタジエンゴム（ＢＲ）、ポリイソプレンゴム（ＩＲ）、アクリロニトリル−ブタジエン共重合体ゴム(ＮＢＲ)、クロロプレンゴム、エチレン−プロピレン−ジエン共重合体ゴム、スチレン−イソプレン−ブタジエン共重合体ゴム、イソプレン−ブタジエン共重合体ゴムなどが挙げられ、これらのジエン系ゴムは、所定の範囲で単独又は二種以上のブレンドゴムとして使用されてよい。 The SBR blended as a rubber component in the rubber composition for a tire tread of the present invention needs to be 40 parts by weight or more with respect to 100 parts by weight of the entire rubber component. If the amount of SBR is less than 40 parts by weight, the wet skid resistance performance is lowered, which is not preferable. Other rubber components in the rubber composition for tire treads include diene rubbers such as natural rubber (NR), various butadiene rubbers (BR), polyisoprene rubber (IR), acrylonitrile-butadiene copolymer rubber (NBR). ), Chloroprene rubber, ethylene-propylene-diene copolymer rubber, styrene-isoprene-butadiene copolymer rubber, isoprene-butadiene copolymer rubber and the like, and these diene rubbers are used alone or in a predetermined range. It may be used as two or more blend rubbers.
また、本発明のタイヤトレッド用ゴム組成物には、前記ゴム成分１００重量部に対して５〜７０重量部のシリカが配合される。当該シリカの配合量がゴム成分に対して５重量部未満では、シリカの充填剤効果が小さく、転がり抵抗が悪化するので好ましくなく、逆に７０重量部を超えると、ｔａｎδ（０℃）の低下によるウェットスキッド抵抗の悪化及び耐摩耗性が著しく悪化するので好ましくない。 Moreover, the rubber composition for tire treads of the present invention contains 5 to 70 parts by weight of silica with respect to 100 parts by weight of the rubber component. If the amount of silica is less than 5 parts by weight relative to the rubber component, the silica filler effect is small and rolling resistance deteriorates, which is not preferable. Conversely, if the amount exceeds 70 parts by weight, tan δ (0 ° C.) decreases. This is not preferable because the wet skid resistance and wear resistance are significantly deteriorated due to the above.
本発明のタイヤトレッド用ゴム組成物に配合、使用される可塑剤としての特定のエポキシ化合物としては、下記の一般式（１）：
Ｒ1−(ＣＨ＝ＣＨ−ＣＨ2)m−(ＣＨ2)n−ＣＯＯＲ2 （１）
（式中、Ｒ1は、炭素数１〜１０個のアルキル基を示し、Ｒ2は、水素又は炭素数１〜１０個のアルキル基、アリール基、アルケニル基、（メタ）アクリル基もしくはアルコキシシリル基を示し、ｍ及びｎは、１〜２０の整数である。）
で表される不飽和脂肪酸又はその誘導体をエポキシ化したエポキシ化合物が用いられる。
このエポキシ化は、所定の原料となる不飽和脂肪酸又はその誘導体を、２０℃以下の低温にて数時間から数日間放置して固形分を沈殿させ、その上澄みを過酸化水素を用いて、あるいは過酢酸等の有機過酸を用いて行うことができる。
As a specific epoxy compound as a plasticizer to be blended and used in the tire tread rubber composition of the present invention, the following general formula (1):
R 1 — (CH═CH—CH 2 ) m — (CH 2 ) n —COOR 2 (1)
(In the formula, R 1 represents an alkyl group having 1 to 10 carbon atoms, and R 2 represents hydrogen, an alkyl group having 1 to 10 carbon atoms, an aryl group, an alkenyl group, a (meth) acryl group or an alkoxysilyl group. And m and n are integers of 1 to 20.)
An epoxy compound obtained by epoxidizing an unsaturated fatty acid represented by the formula or a derivative thereof is used.
In this epoxidation, an unsaturated fatty acid or a derivative thereof as a predetermined raw material is allowed to stand for several hours to several days at a low temperature of 20 ° C. or lower to precipitate a solid, and the supernatant is used with hydrogen peroxide, or It can be performed using an organic peracid such as peracetic acid.
本発明で使用可能な、かかるエポキシ化合物の原料となる不飽和脂肪酸又はその誘導体は、上記式（１）中のＲ１が、炭素数１〜１０個までのアルキル基であり、具体的には、メチル基、エチル基、プロピル基、ブチル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基などが挙げられる。Ｒ２は、水素又は炭素数１〜１０個のアルキル基、アリール基、アルケニル基、（メタ）アクリル基もしくはアルコキシシリル基を示し、ｍ及びｎは、それぞれ１〜２０の整数であり、ｍ個及びｎ個の各基の結合順序は任意である。一般式（１）で表される不飽和脂肪酸又はその誘導体は、不飽和脂肪酸又は不飽和脂肪酸エステルと多価アルコールをエステル化反応又はエステル交換反応させて得ることができる。当該不飽和脂肪酸としては、炭素数が１６〜２２個の範囲のものが好ましく、具体的には、ヘキサデカトリエン酸、ヘキサデカテトラエン酸、オクタデカテトラエン酸、ヘンエイコサペンタエン酸、エイコサテトラエン酸、エイコサペンタエン酸、ドコサペンタエン酸、ドコサヘキサエン酸などの各不飽和脂肪酸が該当する。なお、不飽和脂肪酸は、亜麻仁油、魚油、サフラー油、牛脂油などの天然油脂から得ることができる。本発明で使用するエポキシ化合物は、上記一般式（１）で表される不飽和脂肪酸又はその誘導体を酸化反応でエポキシ化することによって容易に得ることができる。当該酸化反応に用いる酸化剤としては、特に制限はなく、過酢酸、過蟻酸、過プロピオン酸、過安息香酸などの有機過酸の外にハイドロペルオキシド類、過酸化水素を例として挙げることができる。 In the unsaturated fatty acid or derivative thereof that can be used in the present invention and is a raw material of such an epoxy compound, R 1 in the above formula (1) is an alkyl group having 1 to 10 carbon atoms, specifically, Methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group and the like. R 2 represents hydrogen or an alkyl group having 1 to 10 carbon atoms, an aryl group, an alkenyl group, a (meth) acryl group or an alkoxysilyl group, m and n are each an integer of 1 to 20, m And the bonding order of each of the n groups is arbitrary. The unsaturated fatty acid represented by the general formula (1) or a derivative thereof can be obtained by esterifying or transesterifying an unsaturated fatty acid or an unsaturated fatty acid ester with a polyhydric alcohol. As the unsaturated fatty acid, those having 16 to 22 carbon atoms are preferable. Specifically, hexadecatrienoic acid, hexadecatetraenoic acid, octadecatetraenoic acid, heneicosapentaenoic acid, eicosa Each unsaturated fatty acid such as tetraenoic acid, eicosapentaenoic acid, docosapentaenoic acid, and docosahexaenoic acid is applicable. The unsaturated fatty acid can be obtained from natural fats and oils such as linseed oil, fish oil, safflower oil and beef tallow oil. The epoxy compound used in the present invention can be easily obtained by epoxidizing the unsaturated fatty acid represented by the general formula (1) or a derivative thereof by an oxidation reaction. The oxidizing agent used for the oxidation reaction is not particularly limited, and examples thereof include hydroperoxides and hydrogen peroxide in addition to organic peracids such as peracetic acid, formic acid, perpropionic acid, and perbenzoic acid. .
本発明のタイヤトレッド用ゴム組成物には、当該エポキシ化合物が、０．１〜５０重量部の量で配合される。このエポキシ化合物の配合量が０．１重量部未満では、十分な粘度低下効果が得られず、逆に５０重量部を超えると、ブリードが発生するので好ましくない。また、当該エポキシ化合物のヨウ素価は、６０以上であることが一層好ましい。このヨウ素価が６０未満では、ブリードが発生するので実用的ではない。 The said epoxy compound is mix | blended with the rubber composition for tire treads of this invention in the quantity of 0.1-50 weight part. If the amount of the epoxy compound is less than 0.1 parts by weight, a sufficient viscosity reduction effect cannot be obtained. Conversely, if it exceeds 50 parts by weight, bleeding occurs, which is not preferable. Further, the iodine value of the epoxy compound is more preferably 60 or more. If the iodine value is less than 60, bleeding occurs, which is not practical.
本発明のタイヤトレッド用ゴム組成物には、他の配合剤として、加硫又は架橋剤、加硫又は架橋促進剤、カーボンブラックなどの補強剤、シランカップリング剤、老化防止剤、充填剤など、かかる一般タイヤ用に配合されている各種配合剤が配合され、かかる配合剤の配合量も、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 the rubber composition for a tire tread of the present invention, as other compounding agents, a vulcanization or crosslinking agent, a vulcanization or crosslinking accelerator, a reinforcing agent such as carbon black, a silane coupling agent, an antiaging agent, a filler, and the like Various compounding agents compounded for such general tires are compounded, and the compounding amount of the compounding agent can be set to the conventional general compounding amount as long as the object of the present invention is not violated.
以下、実施例及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。 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.
試験サンプルの作製
以下の表１に示すゴム配合系における硫黄と加硫促進剤を除く成分を１.８Ｌの密閉型ミキサーで５分間混練しマスターバッチを得た。得られたマスターバッチに、硫黄と加硫促進剤を加えて８インチのオープンロールで混練して各例のゴム組成物を得た。このゴム組成物の一部をムーニー粘度試験に供した。次いで、このゴム組成物の残部を１５ｃｍ×１５ｃｍ×０.２ｃｍの金型中で、１５０℃、３０分間プレス加硫して試験片（ゴムシート）を作製し、これを引張試験、粘弾性（転がり抵抗）、ウェットスキッド性能及び摩耗試験に供した。
Preparation of test sample The components excluding sulfur and the vulcanization accelerator in the rubber compounding system shown in Table 1 below were kneaded with a 1.8 L closed mixer for 5 minutes to obtain a master batch. Sulfur and a vulcanization accelerator were added to the obtained master batch and kneaded with an 8-inch open roll to obtain rubber compositions of respective examples. A part of this rubber composition was subjected to the Mooney viscosity test. Subsequently, the remainder of the rubber composition was press vulcanized at 150 ° C. for 30 minutes in a 15 cm × 15 cm × 0.2 cm mold to produce a test piece (rubber sheet), which was subjected to a tensile test, viscoelasticity ( Rolling resistance), wet skid performance and wear test.
試験法
１）ムーニー粘度（ＭＬ1+4)： ＪＩＳ Ｋ ６３００に準拠して、ムーニー粘度計にてＬ型ロータ（３８．１ｍｍ径、５．５ｍｍ厚）を使用し、予熱時間１分、ロータの回転時間４分、１００℃、２ｒｐｍの条件下で測定した。比較例１の結果を１００として、結果を指数で示す。数値が小さい程、良好であることを示す。
２）引張強さ及び切断時伸び： ＪＩＳ Ｋ ６２５１に準拠して、３号ダンベルにて２ｍｍシートを打抜き、５００ｍｍ／分の引張速度にて、引張強さ及び切断時伸びを測定した。
３）粘弾性（ｔａｎδ（０℃、６０℃））： ２ｍｍ厚のシート状ゴム片を打抜き、長さ１５ｍｍ×幅５ｍｍ×厚さ２ｍｍ×の短冊状物とし、東洋精機製作所製のレオログラフソリッドを用いて、初期歪＝１０％、動的歪＝±２％、周波数＝２０Ｈｚで、０℃および６０℃における伸長型粘弾性を測定した。ここで、６０℃のｔａｎδ値は、転がり抵抗を示す。数値が小さい程、転がり抵抗に優れていることを示す。
４）ウェットスキッド性能：スタンレー社製ポータブルスキッドテスターを用いて、湿潤路面の条件下で、ＡＳＴＭ Ｅ−３０３−８３の方法に従って測定した。数値が大きい程、ウェットスキッド性能が良好であることを示す。
５）ランボーン摩耗： ＪＩＳ Ｋ６２６４に準拠して、ランボーン摩耗試験機（岩本製作製）を使用し、試験温度２０℃、スリップ率２５％及び３５％、負荷荷重１５Ｎで測定した。比較例１を１００として指数で評価した。数値が大きい程、耐摩耗性が良好であることを示す。
Test Method 1) Mooney Viscosity (ML 1 + 4 ): In accordance with JIS K 6300, using Mooney viscometer with L-shaped rotor (38.1 mm diameter, 5.5 mm thickness), preheating time 1 minute, rotor The rotation time was 4 minutes, and the measurement was performed under the conditions of 100 ° C. and 2 rpm. The result of Comparative Example 1 is taken as 100, and the result is shown as an index. It shows that it is so favorable that a numerical value is small.
2) Tensile strength and elongation at break: In accordance with JIS K 6251, a 2 mm sheet was punched with a No. 3 dumbbell, and the tensile strength and elongation at break were measured at a tensile speed of 500 mm / min.
3) Viscoelasticity (tan δ (0 ° C., 60 ° C.)): A 2 mm thick sheet-like rubber piece is punched into strips 15 mm long × 5 mm wide × 2 mm thick × rheograph manufactured by Toyo Seiki Seisakusho Using the solid, elongational viscoelasticity at 0 ° C. and 60 ° C. was measured at an initial strain = 10%, a dynamic strain = ± 2%, and a frequency = 20 Hz. Here, the tan δ value at 60 ° C. indicates rolling resistance. It shows that it is excellent in rolling resistance, so that a numerical value is small.
4) Wet skid performance: Measured according to the method of ASTM E-303-83 using a portable skid tester manufactured by Stanley under wet road conditions. It shows that wet skid performance is so favorable that a numerical value is large.
5) Lambourne wear: Measured at a test temperature of 20 ° C., slip rates of 25% and 35%, and an applied load of 15 N using a lambourne wear tester (manufactured by Iwamoto) in accordance with JIS K6264. The comparative example 1 was set to 100 and evaluated by an index. It shows that abrasion resistance is so favorable that a numerical value is large.
実施例１〜５及び比較例１〜５
結果を以下の表１に示す。
The results are shown in Table 1 below.
これらの結果によれば、本発明による特定のエポキシ化合物を所定量配合したゴム組成物では、耐摩耗性、転がり抵抗性及びウェットスキッド性能の三特性を改良するだけでなく、ムーニー粘度の低下も大きく加工性が大幅に改善されたタイヤトレッド用ゴム組成物が得られることが判る。 According to these results, the rubber composition containing a specific amount of the specific epoxy compound according to the present invention not only improves the three characteristics of wear resistance, rolling resistance and wet skid performance, but also decreases Mooney viscosity. It can be seen that a rubber composition for a tire tread having greatly improved processability can be obtained.
Claims (2)
Ｒ1−(ＣＨ＝ＣＨ−ＣＨ2)m−(ＣＨ2)n−ＣＯＯＲ2 （１）
（式中、Ｒ1は、炭素数１〜１０個のアルキル基を示し、Ｒ2は、水素又は炭素数１〜１０個のアルキル基、アリール基、アルケニル基、（メタ）アクリル基もしくはアルコキシシリル基を示し、ｍ及びｎは、１〜２０の整数である。） A compound system comprising 100 parts by weight of a rubber component containing 40 parts by weight or more of a styrene-butadiene copolymer having a vinyl content of 20 to 65% by weight and a styrene content of 20 to 50% by weight and 5 to 70 parts by weight of silica. On the other hand, the rubber composition for tire treads which mix | blends 0.1-50 weight part of epoxy compounds which epoxidized the unsaturated fatty acid represented by following General formula (1), or its derivative (s).
R 1 — (CH═CH—CH 2 ) m — (CH 2 ) n —COOR 2 (1)
(In the formula, R 1 represents an alkyl group having 1 to 10 carbon atoms, and R 2 represents hydrogen, an alkyl group having 1 to 10 carbon atoms, an aryl group, an alkenyl group, a (meth) acryl group or an alkoxysilyl group. And m and n are integers of 1 to 20.)
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| JP2006133902A JP2007302813A (en) | 2006-05-12 | 2006-05-12 | Rubber composition for tire tread |
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| JP2006133902A JP2007302813A (en) | 2006-05-12 | 2006-05-12 | Rubber composition for tire tread |
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| JP2007302813A true JP2007302813A (en) | 2007-11-22 |
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Cited By (9)
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| JP2013095836A (en) * | 2011-10-31 | 2013-05-20 | Sumitomo Rubber Ind Ltd | Rubber composition for tread and pneumatic tire |
| JP2014173062A (en) * | 2013-03-12 | 2014-09-22 | Sumitomo Rubber Ind Ltd | Tread rubber composition and pneumatic tire |
| WO2015152398A1 (en) * | 2014-04-03 | 2015-10-08 | 横浜ゴム株式会社 | Rubber composition for use in tire tread |
| RU2583962C2 (en) * | 2014-05-23 | 2016-05-10 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Вятский государственный университет" ("ВятГУ") | Vulcanisable rubber mixture |
| US10179479B2 (en) | 2015-05-19 | 2019-01-15 | Bridgestone Americas Tire Operations, Llc | Plant oil-containing rubber compositions, tread thereof and race tires containing the tread |
| JP2021080473A (en) * | 2021-02-17 | 2021-05-27 | 住友ゴム工業株式会社 | Rubber composition for tires, and tire |
| US20230286325A1 (en) * | 2020-07-29 | 2023-09-14 | Sumitomo Rubber Industries, Ltd. | Tire |
| US11772422B2 (en) | 2019-08-05 | 2023-10-03 | Sumitomo Rubber Industries, Ltd. | Tire rubber composition and tire |
| US11866586B2 (en) | 2019-08-05 | 2024-01-09 | Sumitomo Rubber Industries, Ltd. | Rubber composition for tires and tire |
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- 2006-05-12 JP JP2006133902A patent/JP2007302813A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013095836A (en) * | 2011-10-31 | 2013-05-20 | Sumitomo Rubber Ind Ltd | Rubber composition for tread and pneumatic tire |
| JP2014173062A (en) * | 2013-03-12 | 2014-09-22 | Sumitomo Rubber Ind Ltd | Tread rubber composition and pneumatic tire |
| KR101695407B1 (en) | 2014-04-03 | 2017-01-11 | 요코하마 고무 가부시키가이샤 | Rubber composition for use in tire tread |
| JP2015196814A (en) * | 2014-04-03 | 2015-11-09 | 横浜ゴム株式会社 | Rubber composition for tire tread |
| KR20160096219A (en) * | 2014-04-03 | 2016-08-12 | 요코하마 고무 가부시키가이샤 | Rubber composition for use in tire tread |
| WO2015152398A1 (en) * | 2014-04-03 | 2015-10-08 | 横浜ゴム株式会社 | Rubber composition for use in tire tread |
| US11104782B2 (en) | 2014-04-03 | 2021-08-31 | The Yokohama Rubber Co., Ltd. | Rubber composition for use in tire tread |
| RU2583962C2 (en) * | 2014-05-23 | 2016-05-10 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Вятский государственный университет" ("ВятГУ") | Vulcanisable rubber mixture |
| US10179479B2 (en) | 2015-05-19 | 2019-01-15 | Bridgestone Americas Tire Operations, Llc | Plant oil-containing rubber compositions, tread thereof and race tires containing the tread |
| US11772422B2 (en) | 2019-08-05 | 2023-10-03 | Sumitomo Rubber Industries, Ltd. | Tire rubber composition and tire |
| US11866586B2 (en) | 2019-08-05 | 2024-01-09 | Sumitomo Rubber Industries, Ltd. | Rubber composition for tires and tire |
| US20230286325A1 (en) * | 2020-07-29 | 2023-09-14 | Sumitomo Rubber Industries, Ltd. | Tire |
| JP2021080473A (en) * | 2021-02-17 | 2021-05-27 | 住友ゴム工業株式会社 | Rubber composition for tires, and tire |
| JP7103458B2 (en) | 2021-02-17 | 2022-07-20 | 住友ゴム工業株式会社 | Rubber composition for tires and tires |
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