JP2007063507A - Rubber powder treated with microorganism, rubber composition using the same and tire - Google Patents
Rubber powder treated with microorganism, rubber composition using the same and tire Download PDFInfo
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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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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
Description
本発明は、高破壊強力及び高耐摩耗性を維持するゴム組成物を得るための微生物処理したゴム粉末とそれを配合したゴム組成物及び該ゴム組成物を用いたタイヤに関するものである。 The present invention relates to a microorganism-treated rubber powder for obtaining a rubber composition that maintains high fracture strength and high wear resistance, a rubber composition containing the rubber powder, and a tire using the rubber composition.
廃タイヤは、一般のプラスチック製品と比較して回収率は高く、特にセメント工場を中心に燃料として再利用されている。しかしながら、近年、タイヤゴム片あるいはゴム粉末末をそのまま使用する、いわゆるマテリアルリサイクル率の向上が求められている。廃タイヤの粉砕粉砕方法としては、ロール粉砕法などの常温で機械的に粉砕する方法以外に、液体窒素などにより冷凍してから粉砕する冷凍粉砕や、超高圧水を用いる水撃粉砕法があり、細かい粒子を低コストで作る試みがなされている。
一方、ゴム粉末を未加硫ゴムに混練し、加硫ゴム製品として使用するためには、ゴム粉末と新しい未加硫ゴムとの加硫接着が重要であり、ゴム粉末に再生剤とオイルを配合、過熱脱硫し、ロールでシート状にした再生ゴムも古くから使用されている。
また、ゴム粉末表面の各種の脱硫方法が提案されており、例えばゴム粉末に二軸押出機などで大きな剪断力を加えて粉砕脱硫する方法などがある。しかし、これらの方法は、処理温度が高温であることや高いせん断力処理することから、エネルギーコストが高いことが欠点である。
Waste tires have a higher recovery rate than ordinary plastic products, and are reused as fuel, especially in cement factories. However, in recent years, there has been a demand for an improvement in so-called material recycling rate that uses tire rubber pieces or rubber powder powder as they are. In addition to mechanical pulverization methods such as roll pulverization methods, waste tire pulverization methods include freeze pulverization after pulverization after freezing with liquid nitrogen, etc., and water hammer pulverization method using ultra-high pressure water. Attempts have been made to produce fine particles at low cost.
On the other hand, in order to knead rubber powder with unvulcanized rubber and use it as a vulcanized rubber product, vulcanization adhesion between rubber powder and new unvulcanized rubber is important. Recycled rubber that has been compounded, overheated, desulfurized, and rolled into a sheet has been used for a long time.
Various desulfurization methods for the surface of the rubber powder have been proposed. For example, there is a method of pulverizing and desulfurizing the rubber powder by applying a large shearing force with a twin screw extruder or the like. However, these methods are disadvantageous in that the energy cost is high because the processing temperature is high and the shearing process is high.
そこで、省エネルギー的な方法として、微生物による処理が検討されている。微生物処理は、低温での処理なので、エネルギー消費は最が少ない処理法といえる。微生物処理については、硬質ゴムを効率よく分解処理する方法が提案されているが（例えば、特許文献１又は２参照）、いずれもゴム片を完全に分解することを念頭にした処理方法が示されているだけで、どのようにすればマテリアルリサイクルに有効な粉ゴムを得ることができるかについては何も述べられていない。 Therefore, treatment with microorganisms has been studied as an energy-saving method. Microbial treatment is a treatment at a low temperature, so it can be said that the treatment method has the least energy consumption. As for microbial treatment, methods for efficiently decomposing hard rubber have been proposed (see, for example, Patent Document 1 or 2), but all of them show treatment methods with the goal of completely decomposing rubber pieces. However, nothing is said about how to obtain powdered rubber that is effective for material recycling.
本発明は、従来の粉ゴムを使用した場合に比べ、高破壊強力及び高耐摩耗性を維持するゴム組成物を得るためのゴム粉末、該ゴム粉末を含むゴム組成物及びそれを用いた高破壊強力及び高耐摩耗性を維持したタイヤを提供することを目的とするものである。 The present invention relates to a rubber powder for obtaining a rubber composition that maintains high fracture strength and high wear resistance, a rubber composition containing the rubber powder, and a high An object of the present invention is to provide a tire that maintains fracture strength and high wear resistance.
本発明者らは、上記の問題を解決するために鋭意検討した結果、廃ゴムを従来法で粉砕した特定サイズのゴム粉末の表面を更に特定の微生物によって処理を行い、処理後のゴム粉末を未加硫ゴムに配合することで、その目的を達成し得ることを見出した。本発明はかかる知見に基づいて完成したものである。
すなはち、本発明は、
（１） オクロバクトラム（Ochrobactrum）属の菌であるWU−YS09株（FERM P−20314）で微生物処理したことを特徴とするゴム粉末、
（２） ポリイソプレン系ゴムを含有する上記（１）のゴム粉末、
（３） ポリイソプレン系ゴムの含有量が１０質量％以上である上記（２）のゴム粉末、
（４） ポリイソプレンゴムのシス１，４結合が９０％以上の高シスポリイソプレンゴムである上記（２）又は（３）のゴム粉末、
（５） さらに、カーボンブラックを含有する上記（１）〜（４）のゴム粉末、
（６）上記（１）〜（５）のゴム粉末を含むゴム組成物、
（７） ゴム粉末の平均粒子径が１０〜５００μｍである上記（６）のゴム組成物、
（８） 未加硫ゴム成分１００質量部に対しゴム粉末０．０１〜１００質量部配合してなる上記（６）又は（７）のゴム組成物、及び
（９） 上記（６）〜（８）のゴム組成物を用いたタイヤ、
を提供するものである。
As a result of diligent studies to solve the above problems, the present inventors further processed the surface of a specific size rubber powder obtained by pulverizing waste rubber by a conventional method with a specific microorganism, and processed rubber powder after processing. It discovered that the objective could be achieved by mix | blending with unvulcanized rubber. The present invention has been completed based on such findings.
In other words, the present invention
(1) Rubber powder characterized by microbial treatment with WU-YS09 strain (FERM P-20314) which is a bacterium of the genus Ochrobactrum,
(2) The rubber powder of the above (1) containing a polyisoprene rubber,
(3) The rubber powder of (2) above, wherein the content of the polyisoprene rubber is 10% by mass or more,
(4) The rubber powder of the above (2) or (3), which is a high cis polyisoprene rubber having a cis 1,4 bond of 90% or more in the polyisoprene rubber,
(5) Further, the rubber powder of the above (1) to (4) containing carbon black,
(6) A rubber composition containing the rubber powder of (1) to (5) above,
(7) The rubber composition according to (6), wherein the rubber powder has an average particle size of 10 to 500 μm,
(8) The rubber composition according to (6) or (7) above, which is formed by blending 0.01 to 100 parts by mass of rubber powder with respect to 100 parts by mass of the unvulcanized rubber component, and (9) (6) to (8) Tires using the rubber composition of
Is to provide.
本発明によれば、従来のゴム粉末を使用した場合に比べ、高強力、高耐摩耗性を維持するゴム組成物を得るためのゴム粉末、該ゴム粉末を含むゴム組成物及び該ゴム組成物を用いた高破壊強力及び高耐摩耗性を維持したタイヤを提供することができる。 According to the present invention, rubber powder for obtaining a rubber composition that maintains high strength and high wear resistance as compared with the case of using a conventional rubber powder, a rubber composition containing the rubber powder, and the rubber composition It is possible to provide a tire that maintains high fracture strength and high wear resistance.
本発明のゴム粉末は、オクロバクトラム属の菌であるWU−YS09株（受託番号FERM P−20314）で微生物処理することが必要である。
天然ゴムなどのポリイソプレン系ゴムは放線菌の類で分解できることはよく知られている。例えば、Nocardiasp.、Nocardia asteroides、Nocardia blasiliensis、Gordona sp.、Gordona polyisoprenivorans、Micromonospora aurantiaca、Micromonospora fortuitum、Sreptomyces coelicolor、Actinomyces elastica、Actinomyces fluscus、Proactinomyces ruber、Actinomadura libanotica、Actinoplanes missouriensi、Actinoplanes italicus、Actinoplanes utahensis、Dactylosporangium thailandense、Micromonospora sp.、Streptomyces sp.、Streptomyces acrimycini、Streptomyces albogriseu、Streptomyces albadunctus、Streptomyces antibioticus、Streptomyces atroolivaceus、Streptomyces aureocirculatus、Streptomyces daghestanicus、Streptomyces flavoviridi、Streptomyces fradiae、Streptomyces griseus、Streptomyces griseobrunneus、Streptomyces griseoflavus、Streptomyces griseoflavus、Streptomyces griseoviridis、Streptomyces nitrosporeus、Streptomyces olivaceus、Streptomyces olivoviridis、Streptomyces tauricus、Amycolatopsis sp.のような多くの放線菌の類が天然ゴムを分解する。
The rubber powder of the present invention needs to be microbially treated with WU-YS09 strain (accession number FERM P-20314) which is a bacterium of the genus Oklobactrum.
It is well known that polyisoprene rubber such as natural rubber can be decomposed by actinomycetes. For example, Nocardiasp., Nocardia asteroides, Nocardia blasiliensis, Gordona sp., Gordona polyisoprenivorans, Micromonospora aurantiaca, Micromonospora fortuitum, Sreptomyces coelicolor, Actinomyces elastica, Actinomycesctinfluidus, Proactinomyces ruplane, Actinomas , Micromonospora sp., Streptomyces sp., Streptomyces acrimycini, Streptomyces albogriseu, Streptomyces albadunctus, Streptomyces antibioticus, Streptomyces atroolivaceus, Streptomyces aureocirculatus, Streptomyces daghestanicus, Streptomyces flavoviridi, Streptomyces fradiae, Streptomyces griseus, Streptomyces griseobrunneus, Streptomyces griseoflavus, Streptomyces griseoflavus, Streptomyces griseoviridis , Streptomyces nitrosporeus, Streptomyces olivaceus, Streptomyces olivoviridis, Streptomyces tauricus, Amycolatopsis sp. To the solution.
しかしながら、ポリイソプレン系ゴムを分解する細菌（バクテリア）の例は極めて少ない。さらに、カーボンブラックなどを配合した硬質ゴムを分解する放線菌の例は極めて少なく、細菌の例は殆ど知られていない。
本発明者らは、多くの土壌から天然ゴム分解菌を鋭意スクリーニングした結果、タイヤなどのゴム製品に使用されるカーボンブラック配合ゴムを分解できるオクロバクトラム属の菌であるWU−YS09株の細菌を見出した。WU−YS09株は独立行政法人産業技術総合研究所 特許生物寄託センターに、受託番号FERM P−20314として委託されている。
However, there are very few examples of bacteria that degrade polyisoprene rubber. Furthermore, there are very few examples of actinomycetes that decompose hard rubber compounded with carbon black and the like, and few examples of bacteria are known.
As a result of intensive screening for natural rubber-degrading bacteria from many soils, the present inventors have found bacteria of the WU-YS09 strain, which is a bacterium belonging to the genus Ocrobactrum that can degrade carbon black compound rubber used in rubber products such as tires. It was. The WU-YS09 strain is entrusted to the Patent Organism Depositary, National Institute of Advanced Industrial Science and Technology, under the accession number FERM P-20314.
本発明において、WU−YS09株は無機塩の液体培地中でゴム粉末を資化しながら増殖をする。
無機塩としては、窒素、リン、カリウム、カルシウム、マグネシウムなどを含むものがあげられる。微生物処理における培養条件は、通常、温度２５〜３５℃、ｐＨ５〜８にて、１０〜１００日程度である。
また、ゴム粉末の成分としてはポリイソプレン系ゴムが好ましい。ポリイソプレン系ゴムとしては主鎖がシスポリイソプレン及びトランスポリイソプレンであるゴム又はエラストマーが好ましく、シス１，４結合が９０％以上の高シスポリイソプレンが最も好ましいが、イソプレンと他のモノマーの共重合体を主鎖とするゴム又はエラストマーにも適用可能である。
具体的なシスポリイソプレンとしては、天然ゴムや日本ゼオン社の商品名「Ｎｉｐｏｌ ＩＲ２２００Ｍ」、グッドイヤー社の商品名「Ｎａｔｓｙｎ２２００」及びジェイエスアール社の商品名「ＩＲ２２００」が挙げられる。
ゴム粉末を構成するゴムやエラストマー中のポリイソプレン系ゴムの含有量が、１０質量％以上であれば本発明においては適用可能であるが、５０質量％以上が好ましく、さらに好ましくは８０質量％以上である。
In the present invention, the WU-YS09 strain grows while assimilating rubber powder in a liquid medium of an inorganic salt.
Inorganic salts include those containing nitrogen, phosphorus, potassium, calcium, magnesium and the like. The culture conditions in the microorganism treatment are usually about 10 to 100 days at a temperature of 25 to 35 ° C. and a pH of 5 to 8.
The rubber powder component is preferably polyisoprene rubber. The polyisoprene rubber is preferably a rubber or elastomer whose main chain is cis polyisoprene and trans polyisoprene, and most preferably a high cis polyisoprene having 90% or more of cis 1,4 bonds. The present invention is also applicable to rubber or elastomer having a polymer as a main chain.
Specific examples of cis-polyisoprene include natural rubber and a trade name “Nipol IR2200M” of ZEON Corporation, a trade name “Natsyn 2200” of Goodyear Corporation, and a trade name “IR2200” of JSR Corporation.
In the present invention, if the content of the rubber constituting the rubber powder or the polyisoprene rubber in the elastomer is 10% by mass or more, it is applicable in the present invention, but preferably 50% by mass or more, more preferably 80% by mass or more. It is.
本発明のゴム粉末はカーボンブラックを含有することができる。カーボンブラックの含有量については特に制限はないが、通常ゴム成分１００質量部に対して、３０〜７０質量部であることが好ましい。 The rubber powder of the present invention can contain carbon black. Although there is no restriction | limiting in particular about content of carbon black, Usually, it is preferable that it is 30-70 mass parts with respect to 100 mass parts of rubber components.
ゴム粉末の原料となる加硫ゴムには、イソプレン系ゴムの他に、ゴム工業で通常使用されているシランカップリング剤、硫黄、加硫剤、加硫促進剤、加硫促進助剤、酸化防止剤、オゾン劣化防止剤、老化防止剤、プロセス油、亜鉛華、ステアリン酸、過酸化物等が配合されたものでもよい。 In addition to isoprene-based rubber, the vulcanized rubber used as the raw material for rubber powder includes silane coupling agents, sulfur, vulcanizing agents, vulcanization accelerators, vulcanization accelerating aids, oxidation accelerators that are commonly used in the rubber industry. It may be blended with an inhibitor, an ozone deterioration inhibitor, an anti-aging agent, a process oil, zinc white, stearic acid, peroxide, and the like.
ゴム粉末の製造方法としては、まず加硫ゴムをロール粉砕法などの常温で機械的に粉砕する方法や液体窒素などにより冷凍してから粉砕する冷凍粉砕法や、超高圧水を用いる水撃などで微粉砕する。ただし、ゴム配合物中にWU−YS09株の増殖を阻害する配合剤が配合されている場合は、このゴム微粉砕物を溶剤抽出し、これを除去する必要がある。次いで、オクロバクトラム属の菌であるWU−YS09株を用いて微生物処理する。 The rubber powder is produced by first mechanically grinding the vulcanized rubber at room temperature, such as a roll grinding method, a freezing and grinding method in which it is frozen by liquid nitrogen and then ground, and a water hammer using ultra-high pressure water. Crush finely. However, when a compounding agent that inhibits the growth of the WU-YS09 strain is blended in the rubber compound, it is necessary to extract the rubber finely pulverized product and remove it. Next, the microorganism is treated with the WU-YS09 strain, which is a bacterium of the genus Ochrobactrum.
本発明のゴム粉末を用いてゴム組成物として使用する場合、ゴム粉末の平均粒径は１０〜５００μｍであることが好ましい。さらに好ましくは５０〜２００μｍである。
ゴム粉末の粒径を上記範囲にすることによって高破壊強力及び高耐摩耗性を維持したゴム組成物を得ることができる。
また、本発明のゴム粉末の配合量は、特に制限されず、ゴム組成物を適用する部材によって適宜決定されるが、通常新ゴム成分１００質量部に対して、０．０１〜１００質量部であることが好ましく、さらにこのましくは１〜１０質量部である。
When the rubber powder of the present invention is used as a rubber composition, the average particle diameter of the rubber powder is preferably 10 to 500 μm. More preferably, it is 50-200 micrometers.
By setting the particle size of the rubber powder within the above range, a rubber composition maintaining high fracture strength and high wear resistance can be obtained.
Further, the blending amount of the rubber powder of the present invention is not particularly limited and is appropriately determined depending on the member to which the rubber composition is applied, but is usually 0.01 to 100 parts by mass with respect to 100 parts by mass of the new rubber component. It is preferable that there is more preferably 1 to 10 parts by mass.
本発明のゴム組成物に用いられる新ゴム成分としては、天然ゴム及び／又はジエン系合成ゴムが用いられる。ここで、ジエン系ゴム成分としては、例えばポリイソプレン合成ゴム（ＩＲ）、ポリブタジエンゴム（ＢＲ）、スチレン−ブタジエンゴム（ＳＢＲ）、アクリロニトリルブタジエンゴム（ＮＢＲ）、クロロプレンゴム（ＣＲ）、ブチルゴム（ＩＩＲ）などが挙げられる。この天然ゴムやジエン系合成ゴムは単独で用いてもよく、二種以上を組み合わせて用いてもよい。
また、本は発明のゴム組成物には、通常ゴム業界で用いられる硫黄、過酸化物などの加硫剤、加硫促進剤、老化防止剤、軟化剤、補強性充填材、スコーチ防止剤、亜鉛華、ステアリン酸などの各種配合剤を、適宜含有させることができる。
本発明はまた、このゴム組成物を用いたタイヤを提供する。
As the new rubber component used in the rubber composition of the present invention, natural rubber and / or diene synthetic rubber is used. Here, examples of the diene rubber component include polyisoprene synthetic rubber (IR), polybutadiene rubber (BR), styrene-butadiene rubber (SBR), acrylonitrile butadiene rubber (NBR), chloroprene rubber (CR), and butyl rubber (IIR). Etc. These natural rubber and diene synthetic rubber may be used alone or in combination of two or more.
In addition, the rubber composition of the present invention includes a vulcanizing agent such as sulfur and peroxide usually used in the rubber industry, a vulcanization accelerator, an anti-aging agent, a softening agent, a reinforcing filler, a scorch preventing agent, Various compounding agents such as zinc white and stearic acid can be appropriately contained.
The present invention also provides a tire using the rubber composition.
次に、本発明を実施例により、さらに詳細に説明するが、本発明は、これらの例によってなんら限定されるものではない。なお、測定法は下記の方法に基づいておこなった。
＜耐摩耗性＞
ランボーン型摩耗試験機を用い、室温におけるスリップ率６０％の摩耗量を測定し、比較例１の耐摩耗性を１００として指数表示した。数値が高いほど耐摩耗性が良好であることを示す。
EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by these examples. In addition, the measuring method was performed based on the following method.
<Abrasion resistance>
The amount of wear at a slip rate of 60% at room temperature was measured using a Lambourn type wear tester, and the index was displayed with the wear resistance of Comparative Example 1 as 100. The higher the value, the better the wear resistance.
実施例１
＜微生物処理ゴムの調製＞
シリコーン栓付きのガラス容器に準備した第１表に記載の組成の培地にアセトン抽出済みのゴム粉末（ポリイソプレン系ゴム含有量４０質量％、カーボンブラック含有量５０質量部、平均粒径１００μｍ）８ｇ／Ｌを入れ、９０℃のオートクレーブ中で滅菌処理し、これにラテックス手袋ゴムを唯一の炭素源として前培養したWU−YS09株の菌液を加え、１４日間培養後４０ｒｐｍで振とう培養したのち、１２０ｒｐｍに切り替えて合計で５０日間培養した。培養温度は２８℃、培養ｐＨは７．５であった。
その後、培養液にアセトンを加え、固形物をろ紙でろ過し、純水で数回洗浄し、充分乾燥したことを確認し、ゴム粉末５ｇを得た。
また、比較用として微生物株を全く植菌しないで同様の処理を行った。
Example 1
<Preparation of microorganism-treated rubber>
8 g of rubber powder (polyisoprene rubber content 40% by mass, carbon black content 50 parts by mass, average particle size 100 μm) extracted from the medium of the composition shown in Table 1 prepared in a glass container with a silicone stopper / L, sterilized in an autoclave at 90 ° C., and added to this solution was the WU-YS09 strain pre-cultured using latex glove rubber as the sole carbon source, and cultured for 14 days after shaking at 40 rpm. The total was cultured for 50 days at 120 rpm. The culture temperature was 28 ° C. and the culture pH was 7.5.
Thereafter, acetone was added to the culture solution, the solid was filtered with a filter paper, washed several times with pure water, confirmed to be sufficiently dried, and 5 g of rubber powder was obtained.
For comparison, the same treatment was performed without inoculating any microorganism strain.
実施例２〜４及び比較例１〜３
＜ゴム組成物の調整＞
第２表にそれぞれ示す配合割合のゴム成分、ゴム粉末及び各種配合剤を９０ｃｍ3のプラストミルを用いて混練することにより、各ゴム組成物を得た。得られたゴム組成物を１４５℃で３０分間加圧加硫して、各比較例及び実施例の加硫ゴムサンプルを得た。ゴム粉末の配合量については第３表に夫々示した通りである。
加硫したゴム組成物を用いて耐摩耗性を測定した。結果を比較例１をコントロールとして指数で第３表に示す。
Examples 2 to 4 and Comparative Examples 1 to 3
<Adjustment of rubber composition>
Each rubber composition was obtained by kneading the rubber component, rubber powder, and various compounding agents shown in Table 2 using a 90 cm 3 plast mill. The obtained rubber composition was pressure vulcanized at 145 ° C. for 30 minutes to obtain vulcanized rubber samples of the respective comparative examples and examples. The amount of rubber powder is as shown in Table 3.
Wear resistance was measured using the vulcanized rubber composition. The results are shown in Table 3 as indices using Comparative Example 1 as a control.
＊１．天然ゴム：ＲＳＳ＃３
＊２．ポリブタジエンゴム：ＪＳＲ社製 商品名「ＢＲ０１」
＊３．ゴム粉末変量：第３表に記載
＊４．カーボンブラック；ＩＳＡＦ
＊５．老化防止剤：大内新興化学工業社製 商品名「ノクラック６Ｃ」
＊６．加硫促進剤：大内新興化学工業社製 商品名「ノクセラーＮＳ−Ｆ」
* 1. Natural rubber: RSS # 3
* 2. Polybutadiene rubber: Product name "BR01" manufactured by JSR
* 3. Rubber powder variable: listed in Table 3 * 4. Carbon black; ISAF
* 5. Anti-aging agent: Product name “NOCRACK 6C” manufactured by Ouchi Shinsei Chemical Industry Co., Ltd.
* 6. Vulcanization accelerator: Product name “Noxeller NS-F” manufactured by Ouchi Shinsei Chemical Co., Ltd.
第３表の結果が示すように、微生物処理によって得られたゴム粉末を含む本発明のゴム組成物（実施例２〜４）は微生物処理をおこなわなかった未処理のゴム粉末を含むゴム組成物（比較例１〜３）と比較して、優れた耐摩耗性を有することがわかる。 As shown in the results of Table 3, the rubber compositions (Examples 2 to 4) of the present invention containing the rubber powder obtained by the microbial treatment contain the untreated rubber powder that has not been microbially treated. It turns out that it has the outstanding abrasion resistance compared with (Comparative Examples 1-3).
本発明のゴム粉末は、従来のゴム粉末を使用した場合に比べ、高強力、高耐磨耗性を維持するゴム組成物を与えることが出来る。該ゴム粉末を含むゴム組成物は、タイヤトレッド、サイドウォール、カーカスプライやベルトプライのコーティングゴムに用いることができる。
例えば、該ゴム組成物をトレッドゴムに用いると高耐摩耗性を維持したタイヤを提供することができる。
The rubber powder of the present invention can provide a rubber composition that maintains high strength and high wear resistance as compared with the case where a conventional rubber powder is used. The rubber composition containing the rubber powder can be used as a coating rubber for tire treads, sidewalls, carcass plies and belt plies.
For example, when the rubber composition is used for tread rubber, a tire maintaining high wear resistance can be provided.
Claims (9)
A tire using the rubber composition according to any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005254663A JP2007063507A (en) | 2005-09-02 | 2005-09-02 | Rubber powder treated with microorganism, rubber composition using the same and tire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005254663A JP2007063507A (en) | 2005-09-02 | 2005-09-02 | Rubber powder treated with microorganism, rubber composition using the same and tire |
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| Publication Number | Publication Date |
|---|---|
| JP2007063507A true JP2007063507A (en) | 2007-03-15 |
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| JP2005254663A Pending JP2007063507A (en) | 2005-09-02 | 2005-09-02 | Rubber powder treated with microorganism, rubber composition using the same and tire |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110087903A (en) * | 2016-12-20 | 2019-08-02 | 米其林集团总公司 | Rubber composition comprising specific rubber powder |
| CN110087902A (en) * | 2016-12-20 | 2019-08-02 | 米其林集团总公司 | Rubber composition comprising specific rubber powder |
| GB2539310B (en) * | 2015-04-07 | 2021-02-03 | Lehigh Tech Inc | Tire having crack resistant sidewalls |
| US11028254B2 (en) | 2016-12-20 | 2021-06-08 | Compagnie Generale Des Etablissements Michelin | Rubber composition comprising a specific crumb rubber |
| US11041065B2 (en) | 2016-12-20 | 2021-06-22 | Compagnie Generale Des Etablissements Michelin | Rubber composition comprising a specific crumb rubber |
| US11396208B2 (en) | 2016-12-20 | 2022-07-26 | Compagnie Generale Des Etablissements Michelin | Tire provided with an outer sidewall containing a composition comprising a crumb rubber |
| US11427702B2 (en) | 2016-12-20 | 2022-08-30 | Compagnie Generales des Etablissements Michelin | Rubber composition comprising a specific crumb rubber |
-
2005
- 2005-09-02 JP JP2005254663A patent/JP2007063507A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2539310B (en) * | 2015-04-07 | 2021-02-03 | Lehigh Tech Inc | Tire having crack resistant sidewalls |
| CN110087903A (en) * | 2016-12-20 | 2019-08-02 | 米其林集团总公司 | Rubber composition comprising specific rubber powder |
| CN110087902A (en) * | 2016-12-20 | 2019-08-02 | 米其林集团总公司 | Rubber composition comprising specific rubber powder |
| US11028254B2 (en) | 2016-12-20 | 2021-06-08 | Compagnie Generale Des Etablissements Michelin | Rubber composition comprising a specific crumb rubber |
| US11041065B2 (en) | 2016-12-20 | 2021-06-22 | Compagnie Generale Des Etablissements Michelin | Rubber composition comprising a specific crumb rubber |
| US11046838B2 (en) * | 2016-12-20 | 2021-06-29 | Compagnie Generale Des Etablissements Michelin | Rubber composition comprising a specific crumb rubber |
| US11155701B2 (en) | 2016-12-20 | 2021-10-26 | Compagnie Generale Des Etablissements Michelin | Rubber composition comprising a specific crumb rubber |
| US11396208B2 (en) | 2016-12-20 | 2022-07-26 | Compagnie Generale Des Etablissements Michelin | Tire provided with an outer sidewall containing a composition comprising a crumb rubber |
| US11427702B2 (en) | 2016-12-20 | 2022-08-30 | Compagnie Generales des Etablissements Michelin | Rubber composition comprising a specific crumb rubber |
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