JP2005047968A - Silica-compounded rubber composition - Google Patents
Silica-compounded rubber composition Download PDFInfo
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- JP2005047968A JP2005047968A JP2003203595A JP2003203595A JP2005047968A JP 2005047968 A JP2005047968 A JP 2005047968A JP 2003203595 A JP2003203595 A JP 2003203595A JP 2003203595 A JP2003203595 A JP 2003203595A JP 2005047968 A JP2005047968 A JP 2005047968A
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- rubber composition
- silica
- rubber
- pinene
- terpene
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 24
- 239000005060 rubber Substances 0.000 title claims abstract description 24
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- GRWFGVWFFZKLTI-IUCAKERBSA-N (-)-α-pinene Chemical compound CC1=CC[C@@H]2C(C)(C)[C@H]1C2 GRWFGVWFFZKLTI-IUCAKERBSA-N 0.000 claims abstract description 8
- 229920001577 copolymer Polymers 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims abstract description 5
- WTARULDDTDQWMU-RKDXNWHRSA-N (+)-β-pinene Chemical compound C1[C@H]2C(C)(C)[C@@H]1CCC2=C WTARULDDTDQWMU-RKDXNWHRSA-N 0.000 claims abstract description 4
- WTARULDDTDQWMU-IUCAKERBSA-N (-)-Nopinene Natural products C1[C@@H]2C(C)(C)[C@H]1CCC2=C WTARULDDTDQWMU-IUCAKERBSA-N 0.000 claims abstract description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- WTARULDDTDQWMU-UHFFFAOYSA-N Pseudopinene Natural products C1C2C(C)(C)C1CCC2=C WTARULDDTDQWMU-UHFFFAOYSA-N 0.000 claims abstract description 4
- XCPQUQHBVVXMRQ-UHFFFAOYSA-N alpha-Fenchene Natural products C1CC2C(=C)CC1C2(C)C XCPQUQHBVVXMRQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- MVNCAPSFBDBCGF-UHFFFAOYSA-N alpha-pinene Natural products CC1=CCC23C1CC2C3(C)C MVNCAPSFBDBCGF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229930006722 beta-pinene Natural products 0.000 claims abstract description 4
- LCWMKIHBLJLORW-UHFFFAOYSA-N gamma-carene Natural products C1CC(=C)CC2C(C)(C)C21 LCWMKIHBLJLORW-UHFFFAOYSA-N 0.000 claims abstract description 4
- GRWFGVWFFZKLTI-UHFFFAOYSA-N rac-alpha-Pinene Natural products CC1=CCC2C(C)(C)C1C2 GRWFGVWFFZKLTI-UHFFFAOYSA-N 0.000 claims abstract description 4
- 150000003505 terpenes Chemical class 0.000 claims abstract description 4
- 235000007586 terpenes Nutrition 0.000 claims abstract description 4
- 229920003244 diene elastomer Polymers 0.000 claims description 7
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 2
- 229930004069 diterpene Natural products 0.000 abstract 1
- 150000004141 diterpene derivatives Chemical class 0.000 abstract 1
- 238000004073 vulcanization Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 229920006026 co-polymeric resin Polymers 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 150000003739 xylenols Chemical class 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】
【発明の属する技術分野】
本発明はシリカ含有ゴム組成物に関し、更に詳しくは空気入りタイヤの転がり抵抗を増大させることなく、ウェットグリップを向上させかつ加工性を改良するゴム組成物に関する。
【０００２】
【従来の技術】
空気入りタイヤの低燃費性とウェットグリップを両立させるために補強性充填剤としてシリカを配合して改善することは知られているが、更なる特性の向上が望まれている。またシリカ配合ゴムには未加硫時の粘度が高く、加工しにくいという問題もあり、これの改善も望まれている。従来技術を記載した文献として、例えば特許文献１があげられる。
【０００３】
【特許文献１】
特開平９−１１１０４４号公報
【０００４】
【発明が解決しようとする課題】
従って、本発明の目的は、空気入りタイヤの転がり抵抗を増大させることなく、ウェットグリップを向上させかつ加工性を改良するゴム組成物を提供することにある。
【０００５】
【課題を解決するための手段】
本発明に従えば、（ｉ）ジエン系ゴム、（ｉｉ）シリカ充填剤並びに（ｉｉｉ）α−ピネン、β−ピネン及びジペンテンから選ばれた少なくとも１種のテルペンとフェノールとの共重合体からなる軟化点が６０〜１５０℃の樹脂を含むゴム組成物が提供される。
【０００６】
【発明の実施の形態】
本発明者らは、前記成分（ｉｉｉ）の特定のテルペン−フェノール共重合体樹脂をシリカを含むジエン系ゴムに配合することにより、破断特性の向上（引張り強度及び伸びの増大）、ｔａｎ−δバランスの向上（高温側が不変のままで低温側が上昇）、耐摩耗性の向上及びムーニー粘度の低下が得られることを見出した。
【０００７】
本発明において成分（ｉ）として使用するジエン系ゴムは、従来よりタイヤ用として使用されている任意のジエン系ゴム、例えば天然ゴム（ＮＲ）、ポリイソプレンゴム（ＩＲ）、各種スチレン−ブタジエン共重合体ゴム（ＳＢＲ）、各種ポリブタジエンゴム（ＢＲ）、アクリロニトリル−ブタジエン共重合体ゴムなどをあげることができ、これらは単独又は任意のブレンドとして使用することができる。
【０００８】
本発明において成分（ｉｉ）として使用するシリカ充填剤は従来から、空気入りタイヤ用などのゴム組成物に配合されている任意のシリカとすることができ、特に制限はないが、例えば、乾式法ホワイトカーボン、湿式法ホワイトカーボン、コロイダルシリカ、及び沈降シリカなどが挙げられる。これらの中でも、含水ケイ酸を主成分とする湿式法ホワイトカーボンが特に好ましい。これらのシリカは、それぞれ単独で、あるいは２種以上を組みわ合せて用いることができる。
シリカの比表面積は、特に制限はされないが、窒素吸着比表面積（ＢＥＴ法）で、通常５０〜４００ｍ２ ／ｇ、好ましくは１００〜２５０ｍ２ ／ｇの範囲のものが好適である。
【０００９】
本発明において成分（ｉｉｉ）として使用する特定のテルペン−フェノール共重合樹脂は、α−ピネン、β−ピネン及び／又はジペンテンと、フェノール類（例えばフェノール、クレゾール、キシレノール、ナフトール、レゾルシノール、ヒドロキノンなどの１種又はそれ以上）とのテルペン−フェノール共重合体からなる軟化点（ＪＩＳ Ｋ６２２０−１に準拠して測定）が６０〜１５０℃、好ましくは６５〜１４０℃の樹脂である。この軟化点が低過ぎると、混合加工時の密着が発生したり取扱いが煩雑となるので好ましくない。逆に軟化点が高過ぎると他の成分との混合時に十分に分散することができず、加硫物性が低下するので好ましくない。
前記テルペン−フェノール共重合体は、ジエン系ゴム１００重量部に対し、１〜５０重量部配合するのが好ましい。この配合量が少な過ぎると目的とする改良効果が得られにくく、逆に多すぎるとモジュラスが低下するなど物性が悪化するので好ましくない。
【００１０】
前記テルペン−フェノール共重合体は前記した特定のテルペンとフェノール類とから、例えば熱重合、触媒重合など一般的な重合方法によって製造することができる。このようなテルペン−フェノール共重合体は、例えばヤスハラケミカル（株）よりＹＳポリスターＴ８０、ＹＳポリスターＴ１３０などの市販品であり、本発明においてはかかる市販品を用いることができる。
【００１１】
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、カーボンブラックなどの補強剤（フィラー）、シランカップリング剤、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、かかる配合物は一般的な方法で混練、加硫して組成物とし、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。
【００１２】
【実施例】
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。
【００１３】
実施例１〜２及び比較例１〜５
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１．７リットルの密閉型ミキサーで５分間混練し、１６５±５℃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。このゴム組成物のムーニー粘度（ＭＬ１＋４ ）をＪＩＳ Ｋ６３００に準拠して温度１００℃で測定した。結果は表Ｉに示す。
【００１４】
次に得られたゴム組成物を１５×１５×０．２ｃｍの金型中で１６０℃で３０分間加硫して加硫ゴムシートを調製し、引張り特性として３００％モジュラス（Ｍｏｄ）、引張り強度（ＴＢ）及び破断伸び（ＥＢ）をＪＩＳ Ｋ６２５１に準拠して、粘弾性（ｔａｎδ）及び一連ランボーン摩耗を以下の方法で測定した。結果を表Ｉに示す。
【００１５】
粘弾性（ｔａｎδ）：伸長型粘弾性測定機（東洋精機（株）製）を使用して初期伸長１０％、歪率±２％、周波数２０Ｈｚ条件で０℃、２０℃、６０℃の各温度で測定した。
一連ランボーン摩耗：ランボーン摩耗試験機（岩本製作所（株）製）を使用して荷重５０Ｎ、スリップ率２５％、時間９分、室温条件で測定し、比較例１の測定値を１００とした指数にて表示した。この数値が大きいほど耐摩耗性は良好である。
【００１６】
【表１】
表Ｉの脚注
＊１：日本ゼオン（株）製溶液重合ＳＢＲ（Ｎｉｐｏｌ ＮＳ４４０）
＊２：日本シリカ（株）製ニップシールＡＱ
＊３：昭和キャボット（株）製カーボンブラック
＊４：デグッサ社製シランカップリング剤
＊５：表ＩＩ参照
＊６：正同化学工業（株）製酸化亜鉛３種
＊７：日本油脂（株）製ステアリン酸
＊８：住友化学工業（株）製老化防止剤
＊９：昭和シェル（株）製アロマチックオイル
＊１０ ：ＦＬＥＸＳＹＳ社製加硫促進剤
＊１１ ：ＦＬＥＸＳＹＳ社製加硫促進剤
＊１２ ：鶴見化学工業（株）製硫黄
【００１８】
【表２】
【発明の効果】
表Ｉの結果から明きらかなように、本発明に従って特定のテルペン−フェノール共重合体樹脂を配合したゴム組成物は未配合のゴム組成物に比べ転がり抵抗に寄与の高い高温側のｔａｎδをあげることなく、ウェットグリップへの寄与の高い低温側のｔａｎδをさらにあげることができる。従って、本発明に係るゴム組成物はタイヤトレッド用ゴム組成物として好適に使用することができる。加えて本発明によれば、未加硫時のムーニー粘度を低下させることができ、加工性の向上も図ることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a silica-containing rubber composition, and more particularly to a rubber composition that improves wet grip and improves processability without increasing the rolling resistance of a pneumatic tire.
[0002]
[Prior art]
Although it is known to improve by adding silica as a reinforcing filler in order to achieve both the low fuel consumption and the wet grip of a pneumatic tire, further improvement in characteristics is desired. Further, silica-containing rubber has a problem that it has a high viscosity when unvulcanized and is difficult to process, and improvement of this is also desired. For example, Patent Document 1 is cited as a document describing the prior art.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 9-1111044
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to provide a rubber composition that improves wet grip and improves processability without increasing the rolling resistance of a pneumatic tire.
[0005]
[Means for Solving the Problems]
According to the present invention, it comprises (i) a diene rubber, (ii) a silica filler, and (iii) a copolymer of at least one terpene and phenol selected from α-pinene, β-pinene and dipentene. A rubber composition containing a resin having a softening point of 60 to 150 ° C is provided.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The inventors of the present invention blended the specific terpene-phenol copolymer resin of component (iii) with a diene rubber containing silica to improve the breaking properties (increased tensile strength and elongation), tan-δ. It was found that improved balance (high temperature side remained unchanged and low temperature side increased), improved wear resistance and reduced Mooney viscosity were obtained.
[0007]
The diene rubber used as component (i) in the present invention may be any diene rubber conventionally used for tires, such as natural rubber (NR), polyisoprene rubber (IR), and various styrene-butadiene copolymers. Examples thereof include a combined rubber (SBR), various polybutadiene rubbers (BR), an acrylonitrile-butadiene copolymer rubber, and the like, and these can be used alone or as an arbitrary blend.
[0008]
The silica filler used as the component (ii) in the present invention can be any silica conventionally blended in rubber compositions for pneumatic tires, and is not particularly limited. Examples thereof include white carbon, wet process white carbon, colloidal silica, and precipitated silica. Among these, wet method white carbon mainly containing hydrous silicic acid is particularly preferable. These silicas can be used alone or in combination of two or more.
The specific surface area of silica is not particularly limited, a nitrogen adsorption specific surface area (BET method) is usually 50 to 400 m 2 / g, preferably is suitable in the range of 100 to 250 m 2 / g.
[0009]
The specific terpene-phenol copolymer resin used as component (iii) in the present invention includes α-pinene, β-pinene and / or dipentene, and phenols (for example, phenol, cresol, xylenol, naphthol, resorcinol, hydroquinone, etc.) A resin having a softening point (measured according to JIS K6220-1) of 60 to 150 ° C, preferably 65 to 140 ° C, composed of a terpene-phenol copolymer with one or more). If the softening point is too low, it is not preferable because adhesion during mixing processing occurs and handling becomes complicated. On the other hand, if the softening point is too high, it cannot be sufficiently dispersed at the time of mixing with other components, and vulcanized physical properties are deteriorated.
The terpene-phenol copolymer is preferably blended in an amount of 1 to 50 parts by weight with respect to 100 parts by weight of the diene rubber. If the blending amount is too small, it is difficult to obtain the intended improvement effect. Conversely, if the blending amount is too large, the physical properties deteriorate, for example, the modulus is lowered.
[0010]
The terpene-phenol copolymer can be produced from the above-mentioned specific terpene and phenols by a general polymerization method such as thermal polymerization or catalytic polymerization. Such terpene-phenol copolymers are commercially available products such as YS Polystar T80 and YS Polystar T130 from Yashara Chemical Co., Ltd., and such commercially available products can be used in the present invention.
[0011]
In addition to the above-mentioned essential components, the rubber composition according to the present invention includes a reinforcing agent (filler) such as carbon black, a silane coupling agent, a vulcanization or crosslinking agent, a vulcanization or crosslinking accelerator, various oils, and aging. Various additives that are generally blended for tires such as inhibitors and plasticizers, and other general rubbers can be blended, and these blends are kneaded and vulcanized by a general method to form a composition. Can be used for vulcanization or crosslinking. As long as the amount of these additives is not contrary to the object of the present invention, the conventional general amounts can be used.
[0012]
【Example】
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.
[0013]
Examples 1-2 and Comparative Examples 1-5
In the composition shown in Table I, the components other than the vulcanization accelerator and sulfur were kneaded with a 1.7 liter closed mixer for 5 minutes and released when the temperature reached 165 ± 5 ° 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. The Mooney viscosity (ML 1 + 4 ) of this rubber composition was measured at a temperature of 100 ° C. according to JIS K6300. The results are shown in Table I.
[0014]
Next, the obtained rubber composition was vulcanized in a 15 × 15 × 0.2 cm mold at 160 ° C. for 30 minutes to prepare a vulcanized rubber sheet. The tensile properties were 300% modulus (Mod) and tensile strength. (TB) and elongation at break (EB) were measured in accordance with JIS K6251 in terms of viscoelasticity (tan δ) and a series of lamborn wear by the following methods. The results are shown in Table I.
[0015]
Viscoelasticity (tan δ): Each temperature of 0 ° C., 20 ° C. and 60 ° C. under conditions of initial elongation of 10%, distortion rate of ± 2%, frequency of 20 Hz using an extension type viscoelasticity measuring device (manufactured by Toyo Seiki Co., Ltd.) Measured with
A series of Lambourn wear: Measured using a Lambourn wear tester (Iwamoto Seisakusho Co., Ltd.) at a load of 50 N, a slip rate of 25%, a time of 9 minutes, and room temperature conditions. Displayed. The higher this value, the better the wear resistance.
[0016]
[Table 1]
Footnotes in Table I * 1: Solution polymerization SBR manufactured by Nippon Zeon Co., Ltd. (Nipol NS440)
* 2: Nippon Silica Co., Ltd. nip seal AQ
* 3: Carbon black manufactured by Showa Cabot Co., Ltd. * 4: Silang coupling agent manufactured by Degussa Co., Ltd. * 5: Refer to Table II * 6: Three types of zinc oxide manufactured by Shodo Chemical Industry Co., Ltd. * 7: Nippon Oil & Fats Co., Ltd. Stearic acid * 8: Anti-aging agent manufactured by Sumitomo Chemical Co., Ltd. * 9: Aromatic oil manufactured by Showa Shell Co., Ltd. * 10: Vulcanization accelerator manufactured by FLEXSYS * 11: Vulcanization accelerator manufactured by FLEXSYS * 12 : Sulfur manufactured by Tsurumi Chemical Co., Ltd. [0018]
[Table 2]
【The invention's effect】
As is clear from the results of Table I, the rubber composition containing the specific terpene-phenol copolymer resin according to the present invention increases the tan δ on the high temperature side, which contributes more to rolling resistance than the uncompounded rubber composition. Therefore, tan δ on the low temperature side, which has a high contribution to the wet grip, can be further increased. Therefore, the rubber composition according to the present invention can be suitably used as a tire tread rubber composition. In addition, according to the present invention, the Mooney viscosity at the time of unvulcanization can be reduced, and the workability can be improved.
Claims (2)
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| JP2003203595A JP2005047968A (en) | 2003-07-30 | 2003-07-30 | Silica-compounded rubber composition |
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| JP2003203595A JP2005047968A (en) | 2003-07-30 | 2003-07-30 | Silica-compounded rubber composition |
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| JP2005047968A true JP2005047968A (en) | 2005-02-24 |
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Cited By (7)
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|---|---|---|---|---|
| JP2006249188A (en) * | 2005-03-09 | 2006-09-21 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
| JP2007321094A (en) * | 2006-06-02 | 2007-12-13 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
| JP2008184505A (en) * | 2007-01-29 | 2008-08-14 | Bridgestone Corp | Rubber composition for tire, and pneumatic tire using the same |
| WO2009125747A1 (en) * | 2008-04-07 | 2009-10-15 | 株式会社ブリヂストン | Rubber composition for tire and tire |
| KR20140129044A (en) * | 2012-02-24 | 2014-11-06 | 가부시키가이샤 구라레 | Rubber composition and tire |
| WO2016039384A1 (en) * | 2014-09-09 | 2016-03-17 | 横浜ゴム株式会社 | Resin composition and pneumatic tire using same |
| US20240034820A1 (en) * | 2022-07-28 | 2024-02-01 | The Goodyear Tire & Rubber Company | Rubber composition and truck tire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006249188A (en) * | 2005-03-09 | 2006-09-21 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
| JP2007321094A (en) * | 2006-06-02 | 2007-12-13 | Yokohama Rubber Co Ltd:The | Rubber composition for tire tread |
| JP2008184505A (en) * | 2007-01-29 | 2008-08-14 | Bridgestone Corp | Rubber composition for tire, and pneumatic tire using the same |
| WO2009125747A1 (en) * | 2008-04-07 | 2009-10-15 | 株式会社ブリヂストン | Rubber composition for tire and tire |
| JPWO2009125747A1 (en) * | 2008-04-07 | 2011-08-04 | 株式会社ブリヂストン | Rubber composition for tire and tire |
| US8859650B2 (en) | 2008-04-07 | 2014-10-14 | Bridgestone Corporation | Rubber composition for tire and tire |
| KR20140129044A (en) * | 2012-02-24 | 2014-11-06 | 가부시키가이샤 구라레 | Rubber composition and tire |
| EP2818507A4 (en) * | 2012-02-24 | 2015-11-04 | Kuraray Co | RUBBER COMPOSITION AND TIRE |
| US9228077B2 (en) | 2012-02-24 | 2016-01-05 | Kuraray Co., Ltd. | Rubber composition and tire |
| KR101961513B1 (en) | 2012-02-24 | 2019-03-22 | 주식회사 쿠라레 | Rubber composition and tire |
| WO2016039384A1 (en) * | 2014-09-09 | 2016-03-17 | 横浜ゴム株式会社 | Resin composition and pneumatic tire using same |
| CN106715563A (en) * | 2014-09-09 | 2017-05-24 | 横滨橡胶株式会社 | Resin composition and pneumatic tire using same |
| JPWO2016039384A1 (en) * | 2014-09-09 | 2017-06-15 | 横浜ゴム株式会社 | Rubber composition and pneumatic tire using the same |
| US20240034820A1 (en) * | 2022-07-28 | 2024-02-01 | The Goodyear Tire & Rubber Company | Rubber composition and truck tire |
| US12503532B2 (en) * | 2022-07-28 | 2025-12-23 | The Goodyear Tire & Rubber Company | Rubber composition and truck tire |
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