JPH10182881A - Rubber composition - Google Patents

Rubber composition

Info

Publication number
JPH10182881A
JPH10182881A JP9292478A JP29247897A JPH10182881A JP H10182881 A JPH10182881 A JP H10182881A JP 9292478 A JP9292478 A JP 9292478A JP 29247897 A JP29247897 A JP 29247897A JP H10182881 A JPH10182881 A JP H10182881A
Authority
JP
Japan
Prior art keywords
rubber
rubber composition
radical
composition according
radicals
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.)
Pending
Application number
JP9292478A
Other languages
Japanese (ja)
Inventor
Masayoshi Ito
眞義 伊藤
Chikashi Yatsuyanagi
史 八柳
Keisuke Chino
圭介 知野
Hiroyuki Kaido
博幸 海藤
Katsuhiro Igawa
勝弘 井川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP9292478A priority Critical patent/JPH10182881A/en
Publication of JPH10182881A publication Critical patent/JPH10182881A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To obtain a rubber compsn. excellent in processibility by compounding a diene rubber with a reinforcement and a compd. which contains at least one kind of free radical selected from among nitroxyl, hydrazyl, allyloxyl, and trityl free radicals and is stable at normal temp. in the presence of oxygen. SOLUTION: At least one compd. which is selected from among compds. represented by formulas I to IV, contains at least one kind of free radical selected from among nitroxyl, hydrazyl, allyloxyl, and trityl free radicals, and is stable at normal temp. in the presence of oxygen is used as the free-radical- contg. compd. The objective rubber compsn. is prepd. by mixing and kneading 100 pts.wt. diene rubber with 0.1-10 pts.wt. free-radical-contg. compd., at least 40 pts.wt. carbon black having a nitrogen specific surface area of 20-200m<2> /g and a DBP absorption of 60-130ml/100g or at least 40 pts.wt. silica having a nitrogen specific surface area of 80-300m<2> /g and a DBP absorption of 100-300ml/100g, and other necessary additives.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はゴム組成物に関し、
更に詳しくはゴム組成物中に強力なラジカル捕捉機能を
有するフリーラジカル含有化合物を配合した、加工性に
優れ、グリップ力が高くかつ発熱が少なく、しかも摩耗
時の酸化劣化を防止し、耐摩耗性の向上したゴム組成物
に関する。
TECHNICAL FIELD The present invention relates to a rubber composition,
More specifically, a rubber composition containing a free radical-containing compound having a strong radical scavenging function has excellent workability, high gripping power, low heat generation, and prevents oxidative deterioration during wear. The present invention relates to a rubber composition having improved rubber composition.

【0002】[0002]

【従来の技術】ゴム組成物、特に空気入りタイヤ用ゴム
組成物において、その加工性やタイヤなどの製品の特性
を改良する種々の試みがなされており、特に加工性に優
れ、タイヤのグリップ力が高く、低発熱性で耐摩耗性の
改良されたゴム組成物に対する要求がある。例えば、特
開昭62−148544号公報には天然ゴム又はジエン
系合成ゴムに補強性充填剤及びイソマレイミドを配合し
た、グリーン強度及びグリーンモジュラスを向上させ、
低発熱性及び良好な耐亀製成長性を有するゴム組成物が
開示されている。また特開平7−304305号公報に
はゴムにp−フェニレンジアミン系老化防止剤、2,
2,4−トリメチル−1,2−ジヒドロキノリン(又は
その誘導体)及び特定のカーボンブラックの多量体混合
物を配合してなる組成物から良好な操縦安定性及び高グ
リップ性能を維持し乍ら耐摩耗性の改良された空気入り
タイヤが記載されている。
2. Description of the Related Art Various attempts have been made to improve the processability and the characteristics of products such as tires in rubber compositions, particularly rubber compositions for pneumatic tires. There is a need for a rubber composition having high heat resistance, low heat generation and improved abrasion resistance. For example, Japanese Unexamined Patent Publication (Kokai) No. 62-148544 discloses that natural rubber or a diene-based synthetic rubber is blended with a reinforcing filler and isomaleimide to improve green strength and green modulus.
A rubber composition having low heat build-up and good turtle growth resistance is disclosed. Also, JP-A-7-304305 discloses that p-phenylenediamine-based antioxidants,
Abrasion resistance while maintaining good handling stability and high grip performance from a composition comprising a polymer mixture of 2,4-trimethyl-1,2-dihydroquinoline (or a derivative thereof) and a specific carbon black. A pneumatic tire with improved glove properties is described.

【0003】[0003]

【発明が解決しようとする課題】本発明者らは、かかる
状況下に、加工性に優れ、高グリップ/低発熱のバラン
スに優れ、かつ耐摩耗性の改良されたゴム組成物を開発
することを目的として鋭意研究を重ねた結果、強力なラ
ジカル捕捉機能を有する特定のフリーラジカル含有化合
物を配合することによってかかる目的を達成し得ること
を見出した。
Under these circumstances, the present inventors have developed a rubber composition which is excellent in processability, has a good balance of high grip / low heat generation, and has improved abrasion resistance. As a result of diligent research for the purpose, it has been found that such a purpose can be achieved by blending a specific free radical-containing compound having a strong radical scavenging function.

【0004】[0004]

【課題を解決するための手段】本発明に従えば、少なく
とも一種のジエン系原料ゴム100重量部に、少なくと
も一種の補強剤40〜120重量部と、ニトロキシドラ
ジカル、ヒドラジルラジカル、アリロキシルラジカル及
びトリチルラジカルからなる群から選ばれた少なくとも
一種のラジカルを含み、常温、酸素存在下の状態におい
て安定に存在するラジカルを分子内に含む化合物0.1
〜10重量部とを配合してなるゴム組成物が提供され
る。
According to the present invention, 100 to 100 parts by weight of at least one diene-based raw rubber, 40 to 120 parts by weight of at least one reinforcing agent, nitroxide radical, hydrazyl radical, allyloxyl radical And a compound containing at least one radical selected from the group consisting of and a trityl radical, and containing, in its molecule, a radical stably present at room temperature in the presence of oxygen.
To 10 parts by weight of the rubber composition.

【0005】[0005]

【発明の実施の形態】以下、本発明の構成及びその作用
効果について説明する。本発明に係るゴム組成物に主成
分として配合されるゴムは従来から各種ゴム組成物に一
般的に配合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(NBR)、ブチルゴム(IIR)などの
ジエン系ゴムを単独又は任意のブレンドとして使用する
ことができる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention and the operation and effect thereof will be described below. The rubber compounded as a main component in the rubber composition according to the present invention may be any diene rubber conventionally compounded in various rubber compositions, for example, natural rubber (NR), polyisoprene rubber (IR), Diene rubbers such as various styrene-butadiene copolymer rubbers (SBR), various polybutadiene rubbers (BR), acrylonitrile-butadiene copolymer rubbers (NBR) and butyl rubber (IIR) can be used alone or as an arbitrary blend. it can.

【0006】本発明に係るゴム組成物に配合される補強
剤としては、例えばカーボンブラック、シリカなどがあ
げられ、ジエン系ゴム100重量部に対し、40重量部
以上、好ましくは50〜120重量部配合する。この配
合量が少な過ぎるとゴム組成物として必要な補強性が得
られないので好ましくない。
Examples of the reinforcing agent to be added to the rubber composition according to the present invention include carbon black and silica. The reinforcing agent is 40 parts by weight or more, preferably 50 to 120 parts by weight, based on 100 parts by weight of the diene rubber. Mix. If the amount is too small, the reinforcing properties required for the rubber composition cannot be obtained, which is not preferable.

【0007】本発明に係るゴム組成物に用いられるカー
ボンブラックは、窒素比表面積(N 2 SA)が好ましく
は20〜200m2 /g、更に好ましくは50〜170
2/g、DBP吸油量が好ましくは60〜130ml/
100g、更に好ましくは80〜120ml/100gで
ある。
The car used for the rubber composition according to the present invention
Bon Black has a nitrogen specific surface area (N TwoSA) is preferred
Is 20-200mTwo/ G, more preferably 50 to 170
mTwo/ G, DBP oil absorption is preferably 60 to 130 ml /
100g, more preferably 80-120ml / 100g
is there.

【0008】本発明に係るゴム組成物に用いられるシリ
カは、ゴム配合に用いることができる任意のシリカ(又
はホワイトカーボン)とすることができ、好ましくはN
2 SAが80〜300m2 /g、更に好ましくは100
〜250m2 /gでDBP吸油量が100〜300ml/
100g、更に好ましくは120〜250ml/100g
である。
[0008] The silica used in the rubber composition according to the present invention can be any silica (or white carbon) that can be used in rubber compounding.
2 SA is 80 to 300 m 2 / g, more preferably 100
~250m DBP oil absorption in the 2 / g is 100~300ml /
100g, more preferably 120-250ml / 100g
It is.

【0009】なお、カーボンブラック及びシリカの特性
の測定方法は以下の通りである。 a)窒素比表面積(N2 SA) ASTM−D3037−78“Standard Me
thods ofTreating Carbon B
lack−Surface Areaby Nitro
gen Adsorption”Method Cによ
る。 b)DBP吸油量 ASTM−D−3493により測定。
The method for measuring the properties of carbon black and silica is as follows. a) Nitrogen specific surface area (N 2 SA) ASTM-D3037-78 “Standard Me
things ofTreating Carbon B
Lack-Surface Area Nitro
gen Adsorption "Method C. b) DBP oil absorption Measured by ASTM-D-3493.

【0010】本発明に従えば、必須成分として、ニトロ
キシドラジカル、ヒドラジルラジカル、アリロキシルラ
ジカル、トリチルラジカル及びその類似体よりなる少な
くとも一種の、常温、酸素存在下の状態において安定に
存在するラジカルを分子内に含む化合物をジエン系ゴム
100重量部に対し0.1〜10重量部、好ましくは
0.5〜5重量部配合する。これらの配合量が少な過ぎ
ると所望の効果が得られず、逆に多過ぎるとゴム組成物
として必要な補強性が得られないので好ましくない。
According to the present invention, at least one kind of a radical consisting of a nitroxide radical, a hydrazyl radical, an allyloxyl radical, a trityl radical and an analog thereof, which is stably present at room temperature in the presence of oxygen. Is compounded in an amount of 0.1 to 10 parts by weight, preferably 0.5 to 5 parts by weight, based on 100 parts by weight of the diene rubber. If the amounts are too small, the desired effects cannot be obtained, while if too large, the reinforcing properties required for the rubber composition cannot be obtained, which is not preferable.

【0011】本発明において使用することができる通常
安定に存在するラジカルを分子内に含む化合物として
は、以下の化合物を例示することができる。
The following compounds can be exemplified as compounds containing a normally stable radical in the molecule that can be used in the present invention.

【0012】ニトロキシドラジカル Nitroxide radical

【0013】[0013]

【化1】 Embedded image

【0014】[0014]

【化2】 Embedded image

【0015】(上記式(1)〜(6)において、Rは
O,N,S,P,Cl,Br,lを含んでもよいC1
30の炭化水素基を示す。)
(In the above formulas (1) to (6), R is C 1- which may contain O, N, S, P, Cl, Br, l)
A C 30 hydrocarbon group is shown. )

【0016】[0016]

【化3】 Embedded image

【0017】[0017]

【化4】 Embedded image

【0018】その他の例をあげれば以下の通りである。Other examples are as follows.

【0019】[0019]

【化5】 Embedded image

【0020】[0020]

【化6】 Embedded image

【0021】ヒドラジルラジカル Hydrazyl radical

【0022】[0022]

【化7】 Embedded image

【0023】アリロキシラジカル Allyloxy radical

【0024】[0024]

【化8】 Embedded image

【0025】トリチルラジカル Trityl radical

【0026】[0026]

【化9】 Embedded image

【0027】以上の通り、本発明によれば強力なラジカ
ル捕捉機能を有する前記フリーラジカル含有化合物を添
加したゴム組成物が提供される。本発明では、例えば、
カーボン上に生成するゴム吸着成分を制御し、ゴム組成
物内部のカーボンから遠いゴムマトリックス成分へのカ
ーボンの影響を出来るだけ小さくすることで、ゴム物性
を改良することに成功した。その方法としては、カーボ
ンとゴムを混合する時に起こる剪断力によるゴム分子鎖
のメカノケミカル的な切断により発生するラジカルを常
温、酸素存在下の状態において安定に存在する前記フリ
ーラジカル含有化合物が効率良く捕捉することでゴムの
架橋を防ぎ、過剰なゴム吸着成分を減ずることができ
る。これにより、未加硫時のゴム粘度を下げ、tanδ
バランスの良いゴムを作成することができ、加工性が良
く、高ウェット制動/低転がり抵抗バランスの良いゴム
が得られる。また、この通常安定に存在するフリーラジ
カル含有化合物は、摩耗時に起こる剪断力によるゴム分
子鎖のメカノケミカル的な切断により発生するラジカル
を捕捉することでゴム架橋を防ぎ、ミクロドメインの生
成を抑え、破壊物性低下を防ぎ、これにより耐摩耗性を
向上することができる。
As described above, according to the present invention, there is provided a rubber composition to which the free radical-containing compound having a strong radical scavenging function is added. In the present invention, for example,
The rubber physical properties were improved by controlling the rubber adsorbed component generated on carbon and minimizing the influence of carbon on the rubber matrix component far from carbon in the rubber composition as much as possible. As the method, the free radical-containing compound which is stably present in a state at room temperature and in the presence of oxygen is efficiently produced by radicals generated by mechanochemical cleavage of a rubber molecular chain due to a shear force generated when mixing carbon and rubber. By trapping, crosslinking of rubber can be prevented, and excess rubber adsorbed components can be reduced. Thereby, the rubber viscosity at the time of unvulcanization is lowered, and tanδ
A well-balanced rubber can be produced, a workability is good, and a rubber having a high wet braking / low rolling resistance balance is obtained. In addition, this normally stable free radical-containing compound prevents rubber cross-linking by capturing radicals generated by mechanochemical cleavage of rubber molecular chains due to shear force generated at the time of wear, and suppresses generation of microdomains. It is possible to prevent a decrease in fracture properties, thereby improving wear resistance.

【0028】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。
In the rubber composition according to the present invention, in addition to the above-mentioned essential components, vulcanizing or cross-linking agents, vulcanizing or cross-linking accelerators, various oils, anti-aging agents, plasticizers, etc. Various additives generally compounded for rubber can be compounded, and such compounds can be kneaded and vulcanized into a composition by a general method, and used for vulcanization or crosslinking. it can. The compounding amounts of these additives can also be conventional general compounding amounts as long as they do not contradict the object of the present invention.

【0029】[0029]

【実施例】以下、実施例並びに標準例及び比較例によっ
て本発明を更に説明するが、本発明の範囲をこれらの実
施例に限定するものでないことは言うまでもない。
The present invention will be further described below with reference to Examples, Standard Examples and Comparative Examples, but it goes without saying that the scope of the present invention is not limited to these Examples.

【0030】標準例1、実施例1〜4及び比較例1〜2 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1.8リットルの密閉型ミキサーで3〜5分間混練
し、165±5℃に達したときに放出したマスターバッ
チに加硫促進剤と硫黄を8インチのオープンロール混練
し、ゴム組成物を得た。得られたゴム組成物の未加硫物
性を測定した。次に、この組成物を15×15×0.2
cmの金型中で160℃で20分間プレス加硫して目的と
する試験片(ゴムシート)を調製し、加硫物性を評価し
た。
Preparation of Samples of Standard Example 1, Examples 1-4 and Comparative Examples 1-2 In the formulations shown in Table I, the components excluding the vulcanization accelerator and sulfur were mixed in a 1.8 liter closed mixer by 3-5. The mixture was kneaded for 1 minute and the masterbatch released when the temperature reached 165 ± 5 ° C. was kneaded with an 8-inch open roll with a vulcanization accelerator to obtain a rubber composition. The unvulcanized physical properties of the obtained rubber composition were measured. Next, this composition was added to 15 × 15 × 0.2
The target test piece (rubber sheet) was prepared by press vulcanization at 160 ° C. for 20 minutes in a mold having a diameter of 1 cm, and the vulcanization properties were evaluated.

【0031】[0031]

【表1】 [Table 1]

【0032】各例において得られた組成物の未加硫物性
及び加硫物性の試験方法は以下の通りである。未加硫物性 1)ムーニー粘度:JIS K 6300に基づき10
0℃にて測定した。加硫物性 1)tanδ:粘弾性スペクトロメーター(東洋精機
(株)製)を用いて、温度0℃及び60℃、それぞれ、
初期歪10%、動的歪±2%、周波数20Hzの条件で測
定した値である。0℃におけるtanδは湿潤路での、
また60℃におけるtanδは乾燥路でのグリップ力の
尺度である。いずれもtanδ値の大きい方がタイヤの
グリップ力が大きい。 2)耐摩耗性:ランボーン型摩耗試験機(岩本製作所
製)を用いて温度20℃で摩耗減量を測定し、摩耗減量
を指数表示した。 耐摩耗性(指数)=〔(標準例の減量)/(サンプルの
減量)〕×100 (注)この指数が大きい程、耐摩耗性が良好である。
The methods for testing the unvulcanized and vulcanized properties of the compositions obtained in each example are as follows. Unvulcanized properties 1) Mooney viscosity: 10 based on JIS K 6300
It was measured at 0 ° C. Vulcanization properties 1) tan δ: Using a viscoelastic spectrometer (manufactured by Toyo Seiki Co., Ltd.) at a temperature of 0 ° C. and 60 ° C., respectively.
These values are measured under the conditions of an initial strain of 10%, a dynamic strain of ± 2%, and a frequency of 20 Hz. Tan δ at 0 ° C.
Further, tan δ at 60 ° C. is a measure of grip force on a dry road. In any case, the larger the tan δ value, the greater the grip force of the tire. 2) Abrasion resistance: The wear loss was measured at a temperature of 20 ° C. using a Lambourn-type wear tester (manufactured by Iwamoto Seisakusho), and the wear loss was indicated as an index. Abrasion resistance (index) = [(weight loss of standard example) / (weight loss of sample)] × 100 (Note) The larger the index, the better the wear resistance.

【0033】表Iの脚注 *1:SIR−20(天然ゴム) *2:N220(昭和キャボット(株)製 カーボンブ
ラック、N2 SA=112m2 /g,DBP吸油量=1
12ml/100g) *3:2,2,6,6−テトラメチルピペリジニルオキ
シ(アルドリッチケミカル Aldrich Chemical Company
Inc. 製) *4:2,2−ジフェニル−1−ピクリルヒドラジル
(アルドリッチケミカルAldrich Chemical Company In
c. 製) *5:アルドリッチケミカル Aldrich Chemical Compa
ny Inc. 製 *6:住友化学(株)製 N−フェニル−N′−(1,
3−ジメチルブチル)−p−フェニレンジアミン *7:大内新興化学(株)製 N−tert−ブチル−
2−ベンゾチアゾイル−スルフェンアミド
Footnotes in Table I * 1: SIR-20 (natural rubber) * 2: N220 (carbon black manufactured by Showa Cabot Co., Ltd., N 2 SA = 112 m 2 / g, DBP oil absorption = 1)
* 3: 2,2,6,6-tetramethylpiperidinyloxy (Aldrich Chemical Company
* 4: 2,2-diphenyl-1-picrylhydrazyl (Aldrich Chemical Company In)
* 5: Aldrich Chemical Compa
* 6: N-phenyl-N '-(1, manufactured by Sumitomo Chemical Co., Ltd.
3-dimethylbutyl) -p-phenylenediamine * 7: N-tert-butyl- manufactured by Ouchi Shinko Chemical Co., Ltd.
2-benzothiazoyl-sulfenamide

【0034】標準例2、実施例5〜8及び比較例3〜4 前記例と同様にして表IIに示す配合のゴム組成物を調製
し、その物性を評価した。結果は表IIに示す。
Standard Example 2, Examples 5 to 8 and Comparative Examples 3 to 4 Rubber compositions having the formulations shown in Table II were prepared in the same manner as in the above Examples, and their physical properties were evaluated. The results are shown in Table II.

【0035】[0035]

【表2】 [Table 2]

【0036】表IIの脚注 *1:Nipol IR2200(日本ゼオン(株)製
IR) *2:表I脚注参照
Footnotes in Table II * 1: Nipol IR2200 (IR manufactured by Zeon Corporation) * 2: See Table I footnotes

【0037】標準例3〜4、実施例9〜13及び比較例
5〜6 前記例と同様にして表III に示す配合のゴム組成物を調
製し、その物性を評価した。結果は表III に示す。
Standard Examples 3-4, Examples 9-13 and Comparative Examples
5-6 In the same manner as in the above examples, rubber compositions having the formulations shown in Table III were prepared and their physical properties were evaluated. The results are shown in Table III.

【0038】[0038]

【表3】 [Table 3]

【0039】[0039]

【表4】 [Table 4]

【0040】表III の脚注 *1:Nipol 1502(日本ゼオン(株)製 S
BR) *2:Nipol 9528(日本ゼオン(株)製 S
BR、33.3%油展) *3:N339(東海カーボン(株)製 カーボンブラ
ック、N2 SA=92m 2 /g,DBP吸油量=117
ml/100g) *4:ダイヤブラックI(三菱化学(株)製) *5:N114(東海カーボン(株)製 カーボンブラ
ック、N2 SA=153m2 /g,DBP吸油量=12
7ml/100g) *6:表I脚注参照 *7:大内新興化学(株)製 N−シクロヘキシル−2
−ベンゾチアジルスルフェンアミド *8:大内新興化学(株)製 ジフェニルグアニジン
[0040]Table III footnotes * 1: Nipol 1502 (Nippon Zeon Co., Ltd. S
BR) * 2: Nipol 9528 (manufactured by Zeon Corporation, S
BR, 33.3% oil exhibition) * 3: N339 (Tokai Carbon Co., Ltd. carbon bra
Check, NTwoSA = 92m Two/ G, DBP oil absorption = 117
* 4: Diamond Black I (Mitsubishi Chemical Corporation) * 5: N114 (Tokai Carbon Co., Ltd. carbon bra)
Check, NTwoSA = 153mTwo/ G, DBP oil absorption = 12
* 7: N-cyclohexyl-2 manufactured by Ouchi Shinko Chemical Co., Ltd.
-Benzothiazyl sulfenamide * 8: Diphenylguanidine manufactured by Ouchi Shinko Chemical Co., Ltd.

【0041】[0041]

【化10】 Embedded image

【0042】[0042]

【発明の効果】以上説明したように、本発明に従えば、
強力なラジカル捕捉機能を有する特定のフリーラジカル
含有有機化合物をゴム組成物に配合することにより混練
加工中に発生するゴムのフリーラジカルが捕捉され、ゴ
ムの分子切断とカーボンゲルの生成を抑制することがで
き、加工性に優れ、高グリップ/低発熱のバランスに優
れ、かつ耐摩耗性の改良されたゴム組成物を得ることが
できる。
As described above, according to the present invention,
By compounding a specific free radical-containing organic compound having a strong radical scavenging function into the rubber composition, the free radicals of the rubber generated during kneading are trapped, thereby suppressing the molecular breakage of the rubber and the formation of carbon gel. It is possible to obtain a rubber composition having excellent workability, excellent balance of high grip / low heat generation, and improved abrasion resistance.

フロントページの続き (51)Int.Cl.6 識別記号 FI C08K 5/04 C08K 5/04 5/24 5/24 5/32 5/32 (72)発明者 海藤 博幸 神奈川県平塚市追分2番1号 横浜ゴム株 式会社平塚製造所内 (72)発明者 井川 勝弘 神奈川県平塚市追分2番1号 横浜ゴム株 式会社平塚製造所内Continued on the front page (51) Int.Cl. 6 Identification code FI C08K 5/04 C08K 5/04 5/24 5/24 5/32 5/32 (72) Inventor Hiroyuki Kaito 2-1 Oiwake, Hiratsuka-shi, Kanagawa No. Yokohama Rubber Co., Ltd. Hiratsuka Works (72) Inventor Katsuhiro Igawa 2-1 Oiwake, Hiratsuka-shi, Kanagawa Prefecture Yokohama Rubber Co., Ltd. Hiratsuka Works

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 少なくとも一種のジエン系原料ゴム10
0重量部に、少なくとも一種の補強剤40重量部以上
と、ニトロキシドラジカル、ヒドラジルラジカル、アリ
ロキシルラジカル及びトリチルラジカルからなる群から
選ばれた少なくとも一種のラジカルを含み、常温、酸素
存在下の状態において安定に存在する化合物0.1〜1
0重量部とを配合してなるゴム組成物。
At least one kind of diene-based raw rubber 10
0 parts by weight, at least 40 parts by weight of at least one reinforcing agent and at least one radical selected from the group consisting of nitroxide radicals, hydrazyl radicals, allyloxyl radicals and trityl radicals, at room temperature and in the presence of oxygen Compounds 0.1 to 1 stably present in the state
And 0 parts by weight.
【請求項2】 常温、酸素存在下の状態において安定に
存在するラジカルを含む化合物がテトラメチルピペリジ
ニルオキシ及びその類似体である請求項1に記載のゴム
組成物。
2. The rubber composition according to claim 1, wherein the compound containing a radical that is stably present at room temperature in the presence of oxygen is tetramethylpiperidinyloxy and an analog thereof.
【請求項3】 常温、酸素存在下の状態において安定に
存在するラジカルを含む化合物が2,2−ジフェニル−
1−ピクリルヒドラジル及びその類似体である請求項1
に記載のゴム組成物。
3. A compound containing a radical which is stably present at room temperature in the presence of oxygen is 2,2-diphenyl-
2. 1-Picrylhydrazyl and its analogs.
3. The rubber composition according to item 1.
【請求項4】 補強剤として配合されるカーボンブラッ
クの窒素比表面積N 2 SAが20〜200m2 /gであ
り、DBP吸油量が60〜130ml/100gの範囲で
ある請求項1〜3のいずれか1項に記載のゴム組成物。
4. A carbon black blended as a reinforcing agent.
Nitrogen specific surface area N TwoSA is 20-200mTwo/ G
DBP oil absorption in the range of 60-130ml / 100g
The rubber composition according to any one of claims 1 to 3.
【請求項5】 補強剤として配合されるシリカのN2
Aが80〜300m 2 /gであり、DBP吸油量が10
0〜300ml/100gの範囲である請求項1〜4のい
ずれか1項に記載のゴム組成物。
5. N of silica compounded as a reinforcing agentTwoS
A is 80-300m Two/ G and a DBP oil absorption of 10
5. The method according to claim 1, wherein the amount is in the range of 0 to 300 ml / 100 g.
The rubber composition according to any one of the preceding claims.
【請求項6】 請求項1〜5のいずれか1項に記載のゴ
ム組成物を使用して得られる、空気入りタイヤ。
6. A pneumatic tire obtained by using the rubber composition according to any one of claims 1 to 5.
JP9292478A 1996-10-25 1997-10-24 Rubber composition Pending JPH10182881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9292478A JPH10182881A (en) 1996-10-25 1997-10-24 Rubber composition

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8-284080 1996-10-25
JP28408096 1996-10-25
JP9292478A JPH10182881A (en) 1996-10-25 1997-10-24 Rubber composition

Publications (1)

Publication Number Publication Date
JPH10182881A true JPH10182881A (en) 1998-07-07

Family

ID=26555312

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9292478A Pending JPH10182881A (en) 1996-10-25 1997-10-24 Rubber composition

Country Status (1)

Country Link
JP (1) JPH10182881A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002030188A (en) * 2000-07-18 2002-01-31 Yokohama Rubber Co Ltd:The Rubber composition
US7019086B2 (en) 2002-12-05 2006-03-28 The Yokohama Rubber Co., Ltd. Process for producing modified polymer
US7196144B2 (en) 2004-04-01 2007-03-27 The Yokohama Rubber Co., Ltd. Process for modification of polymer
JP2007084662A (en) * 2005-09-21 2007-04-05 Yokohama Rubber Co Ltd:The Modified polymer and method for producing the same
US7282542B2 (en) 2005-01-12 2007-10-16 The Yokohama Rubber Co., Ltd. Modification method of polymer
JP2007269911A (en) * 2006-03-30 2007-10-18 Adeka Corp Rubber composition

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002030188A (en) * 2000-07-18 2002-01-31 Yokohama Rubber Co Ltd:The Rubber composition
US7019086B2 (en) 2002-12-05 2006-03-28 The Yokohama Rubber Co., Ltd. Process for producing modified polymer
EP1568717A4 (en) * 2002-12-05 2007-06-20 Yokohama Rubber Co Ltd Process for producing modified polymer
US7196144B2 (en) 2004-04-01 2007-03-27 The Yokohama Rubber Co., Ltd. Process for modification of polymer
US7282542B2 (en) 2005-01-12 2007-10-16 The Yokohama Rubber Co., Ltd. Modification method of polymer
JP2007084662A (en) * 2005-09-21 2007-04-05 Yokohama Rubber Co Ltd:The Modified polymer and method for producing the same
JP2007269911A (en) * 2006-03-30 2007-10-18 Adeka Corp Rubber composition

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