JPH0693138A - Rubber composition - Google Patents
Rubber compositionInfo
- Publication number
- JPH0693138A JPH0693138A JP24234292A JP24234292A JPH0693138A JP H0693138 A JPH0693138 A JP H0693138A JP 24234292 A JP24234292 A JP 24234292A JP 24234292 A JP24234292 A JP 24234292A JP H0693138 A JPH0693138 A JP H0693138A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- rubber composition
- polyoxyalkylene glycol
- glycol
- cold resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 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 description 21
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 22
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 125000005702 oxyalkylene group Chemical group 0.000 claims abstract description 8
- -1 oxypropylene units Chemical group 0.000 claims abstract description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 abstract description 11
- 239000004519 grease Substances 0.000 abstract description 7
- 230000015556 catabolic process Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000004073 vulcanization Methods 0.000 description 6
- ZDWGXBPVPXVXMQ-UHFFFAOYSA-N bis(2-ethylhexyl) nonanedioate Chemical compound CCCCC(CC)COC(=O)CCCCCCCC(=O)OCC(CC)CCCC ZDWGXBPVPXVXMQ-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 229920000800 acrylic rubber Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- VJHINFRRDQUWOJ-UHFFFAOYSA-N dioctyl sebacate Chemical compound CCCCC(CC)COC(=O)CCCCCCCCC(=O)OCC(CC)CCCC VJHINFRRDQUWOJ-UHFFFAOYSA-N 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 229920002681 hypalon Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- DECIPOUIJURFOJ-UHFFFAOYSA-N ethoxyquin Chemical compound N1C(C)(C)C=C(C)C2=CC(OCC)=CC=C21 DECIPOUIJURFOJ-UHFFFAOYSA-N 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 125000006353 oxyethylene group Chemical group 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000909 polytetrahydrofuran Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐寒性に優れるゴム組
成物に関するものである。更に詳しくは、グリース、オ
イル等の油性物質に浸漬後の耐寒性の低下が小さく、か
つ低温下での永久歪特性の良好なゴム組成物に関するも
のである。そしてその利用分野としては、自動車のホー
ス類、ブーツ類等に好適な素材として有用である。FIELD OF THE INVENTION The present invention relates to a rubber composition having excellent cold resistance. More specifically, the present invention relates to a rubber composition having a small decrease in cold resistance after immersion in an oily substance such as grease or oil, and having good permanent set characteristics at low temperatures. As a field of use thereof, it is useful as a material suitable for hoses and boots of automobiles.
【０００２】[0002]
【従来の技術】近年、ゴム製品は、より過酷な環境下で
の使用が求められている。特に、自動車用ゴム部品等に
おいては、ホース類、ブーツ類の様にグリース、オイル
等の油性物質と常に接した状態で使用される用途が多い
ため、通常の状態での耐寒性だけではなく、グリース、
オイル等の油性物質浸漬後の耐寒性が重要視されること
も多い。また、シール性の確保のために低温下での永久
歪特性も重要な特性となる。2. Description of the Related Art In recent years, rubber products have been required to be used in more severe environments. In particular, in rubber parts for automobiles, since it is often used in a state where it is always in contact with grease, oil and other oily substances such as hoses and boots, not only cold resistance in a normal state but also Grease,
Cold resistance after immersion in oily substances such as oil is often emphasized. Further, in order to secure the sealing property, the permanent set characteristic at a low temperature is also an important characteristic.
【０００３】ゴムの耐寒性を向上させる手段としては、
通常、ジ（2-エチルヘキシル）セバケート（ＤＯＳ）や
ジ（2-エチルヘキシル）アゼレート（ＤＯＺ）等の可塑
剤を添加する方法が知られている。しかし、この方法で
はオイルやグリース等の油性物質との接触により、耐寒
性が徐々に低下してしまう問題がある。As a means for improving the cold resistance of rubber,
Generally, a method of adding a plasticizer such as di (2-ethylhexyl) sebacate (DOS) or di (2-ethylhexyl) azelate (DOZ) is known. However, this method has a problem that the cold resistance gradually decreases due to contact with oily substances such as oil and grease.
【０００４】[0004]
【問題を解決するための手段】本発明者らは以上のよう
な問題を解決するために鋭意研究を進めた結果、改質剤
として特定の構造を有するポリオキシアルキレングリコ
ールを含有するゴム組成物が、グリースやオイル等の油
性物質に浸漬後も優れた耐寒性を示し、低温での永久歪
特性も優れることを見いだし、本発明に到達した。[Means for Solving the Problem] As a result of intensive studies to solve the above problems, the present inventors have found that a rubber composition containing a polyoxyalkylene glycol having a specific structure as a modifier. However, they have found that they have excellent cold resistance even after being immersed in an oily substance such as grease or oil, and have excellent permanent set characteristics at low temperatures, and have reached the present invention.
【０００５】即ち、本発明は２種以上のオキシアルキレ
ン単位からなるポリオキシアルキレングリコールを含有
してなるゴム組成物を提供するものである。本発明に用
いられるゴムとしては、天然ゴム及び各種合成ゴムが挙
げられるが合成ゴムの例としては、スチレン−ブタジエ
ンゴム、アクリロニトリル−ブタジエンゴム、クロロプ
レンゴム、塩素化ポリエチレン、クロロスルホン化ポリ
エチレン（ＣＳＭ）、アクリル系ゴム、フッ素ゴム、水
素化ニトリルゴム等が挙げられる。That is, the present invention provides a rubber composition containing a polyoxyalkylene glycol composed of two or more oxyalkylene units. Examples of the rubber used in the present invention include natural rubber and various synthetic rubbers. Examples of the synthetic rubber include styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, chlorinated polyethylene and chlorosulfonated polyethylene (CSM). , Acrylic rubber, fluororubber, hydrogenated nitrile rubber and the like.
【０００６】本発明に用いられるポリオキシアルキレン
グリコールのオキシアルキレン単位としてはオキシエチ
レン、オキシプロピレン、オキシテトラメチレン、オキ
シペンタメチレン、オキシヘキサメチレン等があり、ま
たこれらの２種以上のオキシアルキレン単位からなるポ
リオキシアルキレングリコールとしてはエチレングリコ
ール−プロピレングリコール共重合体、プロピレングリ
コール−テトラメチレングリコール共重合体、エチレン
グリコール−プロピレングリコール−テトラメチレング
リコール共重合体、テトラメチレングリコール−ペンタ
メチレングリコール共重合体、プロピレングリコール−
ペンタメチレングリコール共重合体、エチレンオキサイ
ド−プロピレンオキサイド共重合体、プロピレンオキサ
イド−テトラヒドロフラン共重合体、エチレンオキサイ
ド−プロピレンオキサイド−テトラヒドロフラン共重合
体、テトラヒドロフラン−テトラヒドロピラン共重合体
等が挙げられる。Examples of the oxyalkylene unit of the polyoxyalkylene glycol used in the present invention include oxyethylene, oxypropylene, oxytetramethylene, oxypentamethylene, oxyhexamethylene and the like. As the polyoxyalkylene glycol consisting of ethylene glycol-propylene glycol copolymer, propylene glycol-tetramethylene glycol copolymer, ethylene glycol-propylene glycol-tetramethylene glycol copolymer, tetramethylene glycol-pentamethylene glycol copolymer, Propylene glycol-
Examples thereof include a pentamethylene glycol copolymer, an ethylene oxide-propylene oxide copolymer, a propylene oxide-tetrahydrofuran copolymer, an ethylene oxide-propylene oxide-tetrahydrofuran copolymer, and a tetrahydrofuran-tetrahydropyran copolymer.
【０００７】なおクロロプレンゴムの場合には、ゴムと
の相溶性の点からオキシアルキレン単位の少なくとも１
種は炭素数４以上のオキシアルキレン単位であることが
望ましい。In the case of chloroprene rubber, from the viewpoint of compatibility with rubber, at least 1 of oxyalkylene units is used.
The seed is preferably an oxyalkylene unit having 4 or more carbon atoms.
【０００８】本発明のゴム組成物におけるポリオキシア
ルキレングリコールの添加量には特に制限はないが、ゴ
ム１００重量部に対して、ポリオキシアルキレングリコ
ール１０〜５０重量部が好ましい。The amount of polyoxyalkylene glycol added to the rubber composition of the present invention is not particularly limited, but 10 to 50 parts by weight of polyoxyalkylene glycol is preferable to 100 parts by weight of rubber.
【０００９】また、本発明の組成物は実用性能を付与す
る目的で、カーボンブラック、シリカ等の補強剤、アミ
ン系、フェノール系等の老化防止剤、加硫剤、加硫促進
剤、加工助剤等の通常のゴム配合剤を添加するのが一般
的である。そして更に本発明の効果を損なわない範囲で
あれば、ＤＯＳ、ＤＯＺ等の通常の可塑剤を併用するこ
ともできる。The composition of the present invention is used for the purpose of imparting practical performance, such as reinforcing agents such as carbon black and silica, antiaging agents such as amine type and phenol type, vulcanizing agents, vulcanization accelerators, processing aids It is common to add usual rubber compounding agents such as agents. Further, an ordinary plasticizer such as DOS or DOZ may be used in combination as long as the effects of the present invention are not impaired.
【００１０】本発明の組成物を製造する方法としては、
上記の材料を通常のゴム工業で用いられる方法、例えば
オープンロール又は密閉式混合機等で混練することによ
り得られる。The method for producing the composition of the present invention includes:
It can be obtained by kneading the above materials with a method used in a usual rubber industry, for example, an open roll or a closed mixer.
【００１１】[0011]
【実施例】以下、実施例を挙げて本発明について詳述す
る。 実施例１及び比較例１〜２ 表１及び表２に示す配合処方で、生ゴム２００ｇを用い
８インチ径のオープンロール混練機（以下ロールと記述
する）にて混練を行い、アクリル系ゴム組成物を得た。
この組成物をプレス加硫にて１７０℃で２０分間一次加
硫を行い、その後ギヤーオーブン中１５０℃で８時間二
次加硫を行って加硫物を得た。次にこの得られた加硫物
について耐寒性試験、及び低温下での永久歪試験を行
い、表２に示すような結果を得た。尚、試験はＪＩＳ
Ｋ ６３０１に準拠して行った。The present invention will be described in detail below with reference to examples. Example 1 and Comparative Examples 1 and 2 Acrylic rubber compositions having the compounding recipes shown in Table 1 and Table 2 were kneaded with 200 g of raw rubber in an 8-inch diameter open roll kneader (hereinafter referred to as roll). Got
This composition was subjected to primary vulcanization by press vulcanization at 170 ° C. for 20 minutes, and then secondary vulcanization at 150 ° C. for 8 hours in a gear oven to obtain a vulcanized product. Next, the obtained vulcanizate was subjected to a cold resistance test and a permanent set test at a low temperature, and the results shown in Table 2 were obtained. The test is JIS
It carried out based on K6301.
【００１２】[0012]
【表１】 （注） 1) 電気化学工業( 株) 製 アクリル系ゴム デンカＥ
Ｒ- 8401 2) 東海カーボン( 株) 製 シースト＃１１６ 3) 表２参照[Table 1] (Note) 1) Denka E, an acrylic rubber manufactured by Denki Kagaku Kogyo Co., Ltd.
R-8401 2) Tokai Carbon Co., Ltd. Seast # 116 3) See Table 2
【００１３】[0013]
【表２】 （注） 1) 保土谷化学工業(株)製 ＰＰＴＧ４０００（テトラ
ヒドロフラン−プロピレンオキサイド共重合体） 2) ジ（２−エチルヘキシル）フタレート 3) 保土谷化学工業(株)製 ＰＴＧ３０００ （ポリテトラメチレンエーテルグリコール） 4) 低温捩り試験において、剛性が常温の１００倍にな
る温度（℃） 5) 日本石油(株)製パイロノック中に120℃×70h浸漬[Table 2] (Note) 1) Hodogaya Chemical Co., Ltd. PPTG4000 (tetrahydrofuran-propylene oxide copolymer) 2) Di (2-ethylhexyl) phthalate 3) Hodogaya Chemical Co., Ltd. PTG3000 (polytetramethylene ether glycol) 4) Temperature (° C) at which the rigidity becomes 100 times higher than room temperature in the low temperature torsion test. 5) 120 ° C × 70h immersion in Nippon Oil Co., Ltd. pyroknocks.
【００１４】実施例２及び比較例３〜４ 表３及び表４に示す配合処方で、実施例１の方法に準じ
てロールにて混練を行い、クロロスルホン化ポリエチレ
ンゴム組成物を得た。次にこの組成物をプレス加硫にて
１６０℃で３０分間加硫を行った。得られた加硫物につ
いて実施例１の方法に準じて試験を行い、表４のような
結果を得た。Example 2 and Comparative Examples 3 to 4 With the formulation shown in Tables 3 and 4, kneading was performed with a roll according to the method of Example 1 to obtain a chlorosulfonated polyethylene rubber composition. Next, this composition was vulcanized by press vulcanization at 160 ° C. for 30 minutes. The obtained vulcanizate was tested according to the method of Example 1 and the results shown in Table 4 were obtained.
【００１５】[0015]
【表３】 （注） 1) デンカＣＳＭ ３５０ 2) キョウワマグ ＃１５０ 3) シースト＃１１６ 4) ニプシルＶＮ３ 5) 表４参照 6) スミファインＢＭ 7) ノクラックＡＷ[Table 3] (Note) 1) Denka CSM 350 2) Kyowamag # 150 3) Seast # 116 4) Nipsil VN3 5) See Table 4 6) Sumifine BM 7) Nocrac AW
【００１６】[0016]
【表４】 （注） １）、３）、４）、５）は表２に同じ。 ２）ジ（２−エチルヘキシル) アゼレート[Table 4] (Note) 1), 3), 4) and 5) are the same as in Table 2. 2) Di (2-ethylhexyl) azelate
【００１７】実施例３〜４及び比較例４〜５ 表５及び表６に示す配合処方で、実施例１に準じて混練
を行い、クロロプレンゴム組成物を得た。次にこの組成
物をプレス加硫にて１６０℃で２０分間加硫を行った。
得られた加硫物について実施例１の方法に準じて試験を
行い、表６のような結果を得た。Examples 3 to 4 and Comparative Examples 4 to 5 With the compounding recipes shown in Tables 5 and 6, kneading was performed according to Example 1 to obtain chloroprene rubber compositions. Next, this composition was vulcanized by press vulcanization at 160 ° C. for 20 minutes.
The obtained vulcanizate was tested according to the method of Example 1 and the results shown in Table 6 were obtained.
【００１８】[0018]
【表５】 （注） 1) 電気化学工業（株）製 デンカクロロプレン ＤＣ
Ｒ- ３５ 2) 大内新興化学工業（株）製 ノクラック ＡＤ 3) 協和化学工業（株）製 キョウワマグ＃１５０ 4) 東海カーボン（株）製 シースト＃１１６ 5) 表６参照 6) テトラメチルチウラムジスルフィド[Table 5] (Note) 1) Denka Chloroprene DC manufactured by Denki Kagaku Kogyo Co., Ltd.
R- 35 2) Ouchi Shinko Chemical Co., Ltd. Nocrac AD 3) Kyowa Chemical Co., Ltd. Kyowamag # 150 4) Tokai Carbon Co., Ltd. Seast # 116 5) See Table 6 6) Tetramethylthiuram disulfide
【００１９】[0019]
【表６】 （注）１）、３）、４）、６）、７）は表２及び表４に
同じ。 2)三洋化成工業(株)製ニューポールＧＥＰ-２８００ （オキシエチレン単位，オキシプロピレン単位よりなる
トリオール） 5)三洋化成工業(株)製ＰＥＧ２０００（ポリエチレング
リコール）[Table 6] (Note) 1), 3), 4), 6) and 7) are the same as in Table 2 and Table 4. 2) Sanyo Chemical Co., Ltd. New Pole GEP-2800 (triol consisting of oxyethylene unit and oxypropylene unit) 5) Sanyo Chemical Co., Ltd. PEG2000 (polyethylene glycol)
【００２０】これらの結果から、本発明のゴム組成物は
グリース、オイル等の油性物質に浸漬後の耐寒性の低下
が小さく、かつ低温下での永久歪特性が良好であること
がわかる。From these results, it can be seen that the rubber composition of the present invention has a small decrease in cold resistance after immersion in an oily substance such as grease and oil, and has good permanent set characteristics at low temperatures.
Claims (4)
るポリオキシアルキレングリコールを含有してなるゴム
組成物。1. A rubber composition containing a polyoxyalkylene glycol composed of two or more oxyalkylene units.
シアルキレン単位の炭素数が２〜６である請求項１記載
のゴム組成物。2. The rubber composition according to claim 1, wherein the oxyalkylene unit of the polyoxyalkylene glycol has 2 to 6 carbon atoms.
シアルキレン単位がオキシプロピレン及びオキシテトラ
メチレンである請求項１記載のゴム組成物。3. The rubber composition according to claim 1, wherein the oxyalkylene units of the polyoxyalkylene glycol are oxypropylene and oxytetramethylene.
ある請求項１又は請求項２又は請求項３記載のゴム組成
物。4. The rubber composition according to claim 1, 2 or 3, wherein the rubber of the rubber composition is chloroprene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24234292A JP3322913B2 (en) | 1992-09-10 | 1992-09-10 | Rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24234292A JP3322913B2 (en) | 1992-09-10 | 1992-09-10 | Rubber composition |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002147348A Division JP3553049B2 (en) | 2002-05-22 | 2002-05-22 | Rubber composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0693138A true JPH0693138A (en) | 1994-04-05 |
| JP3322913B2 JP3322913B2 (en) | 2002-09-09 |
Family
ID=17087775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24234292A Expired - Fee Related JP3322913B2 (en) | 1992-09-10 | 1992-09-10 | Rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3322913B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005343963A (en) * | 2004-06-01 | 2005-12-15 | Yokohama Rubber Co Ltd:The | Rubber composition for tire, and pneumatic tire |
-
1992
- 1992-09-10 JP JP24234292A patent/JP3322913B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005343963A (en) * | 2004-06-01 | 2005-12-15 | Yokohama Rubber Co Ltd:The | Rubber composition for tire, and pneumatic tire |
| WO2005118705A1 (en) | 2004-06-01 | 2005-12-15 | The Yokohama Rubber Co., Ltd. | Rubber composition for tire and pneumatic tire made therefrom |
| US8722781B2 (en) | 2004-06-01 | 2014-05-13 | The Yokohama Rubber Co., Ltd. | Rubber composition for tire and pneumatic tire made therefrom |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3322913B2 (en) | 2002-09-09 |
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