JPH08302074A - Chloroprene composition - Google Patents

Chloroprene composition

Info

Publication number
JPH08302074A
JPH08302074A JP10935595A JP10935595A JPH08302074A JP H08302074 A JPH08302074 A JP H08302074A JP 10935595 A JP10935595 A JP 10935595A JP 10935595 A JP10935595 A JP 10935595A JP H08302074 A JPH08302074 A JP H08302074A
Authority
JP
Japan
Prior art keywords
sulfur
crosslinking
weight
parts
chloroprene rubber
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
Application number
JP10935595A
Other languages
Japanese (ja)
Other versions
JP3488310B2 (en
Inventor
Sadayoshi Nakamu
定義 中務
Takeshi Kemurizaki
岳 煙崎
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.)
Hayakawa Rubber Co Ltd
Original Assignee
Hayakawa 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 Hayakawa Rubber Co Ltd filed Critical Hayakawa Rubber Co Ltd
Priority to JP10935595A priority Critical patent/JP3488310B2/en
Publication of JPH08302074A publication Critical patent/JPH08302074A/en
Application granted granted Critical
Publication of JP3488310B2 publication Critical patent/JP3488310B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: To obtain a composition for molding cured rubber improved esp. in compression set resistance, consisting mainly of mercaptan- or xanthogen- modified chloroprene rubber. CONSTITUTION: This composition is obtained by essentially incorporating 100 pts.wt. of a mercaptan- or xanthogen-modified chloroprene rubber with (1) 0.3-3.5 pts.wt. of dicatechol borate di-o-tolylguanidine salt, (2) 0.3-3.0 pts.wt. of a thiourea-based cross-linking promoter and (3) 0.1-5.0 pts.wt. of at least one kind of sulfur-based cross-linking component selected from among sulfur, sulfur-releasing cross-linking promoters and sulfur-releasing cross-linking agents.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、工業用、土木建築用部
材として広く使用されているクロロプレンゴムの配合組
成に関するものであり、更に詳しく述べると、その架橋
に使用する添加剤の配合に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compounding composition of chloroprene rubber which is widely used as a member for industrial and civil engineering purposes, and more specifically to an additive compound used for its crosslinking. Is.

【0002】[0002]

【従来の技術】従来、工業用、土木建築用部材として、
天然ゴム、スチレンブタジエンゴム、ブタジエンゴムな
どの汎用ゴムが使用されているが、こうした汎用ゴム
は、耐候性、耐オゾン性、耐油性等に限界がある。この
ため、高い耐久性を要求される部材については、クロロ
プレンゴムが広く使用されている。クロロプレンゴム
は、ブタジエン法もしくはアセチレン法によって製造さ
れる塩素化イソプレンゴムである。これを大別すると、
メルカプタン変性タイプ、ザントゲン変性タイプ、硫黄
変性タイプの3種類に分けられる。クロロプレンゴムの
架橋剤としては、酸化マグネシウム、酸化亜鉛、酸化鉛
などを主成分として、これに対して、架橋速度を上げる
ために各種の架橋促進剤を併用している。
2. Description of the Related Art Conventionally, as members for industrial and civil engineering,
Although general-purpose rubbers such as natural rubber, styrene-butadiene rubber, and butadiene rubber are used, these general-purpose rubbers have limitations in weather resistance, ozone resistance, oil resistance, and the like. Therefore, chloroprene rubber is widely used for members requiring high durability. Chloroprene rubber is a chlorinated isoprene rubber produced by the butadiene method or the acetylene method. When this is roughly divided,
There are three types: mercaptan modified type, xanthogen modified type, and sulfur modified type. As a cross-linking agent for chloroprene rubber, magnesium oxide, zinc oxide, lead oxide, and the like are main components, and various cross-linking accelerators are used together in order to increase the cross-linking speed.

【0003】近年は、ベルト以外の一般用途において
は、メルカプタン変性タイプもしくはザントゲン変性タ
イプのクロロプレンゴムが、加工し易いことから多く使
用されている。その多くは、クロロプレンゴム100重
量部に対して、酸化マグネシウム4重量部および酸化亜
鉛5重量部と、チオウレア系架橋促進剤とを併用した配
合系を使用して、クロロプレンゴムの架橋を行なってい
る。また、この配合系においては、チオ尿素系架橋促進
剤を単独で使用すると、架橋速度が速すぎるために、チ
アゾール系架橋促進剤を併用することも行われている。
Recently, in general applications other than belts, mercaptan-modified or zanthogen-modified chloroprene rubber has been widely used because it is easy to process. Most of them crosslink chloroprene rubber by using a compounding system in which 4 parts by weight of magnesium oxide and 5 parts by weight of zinc oxide are combined with 100 parts by weight of chloroprene rubber and a thiourea-based crosslinking accelerator. . Further, in this compounding system, when a thiourea-based crosslinking accelerator is used alone, the crosslinking speed is too fast, and therefore a thiazole-based crosslinking accelerator is also used in combination.

【0004】[0004]

【発明が解決しようとする課題】しかし、本発明者が検
討したところでは、こうした従来のクロロプレン組成物
の硬化物は、耐圧縮永久歪み性に関しては満足できるも
のではなかった。更に、この配合系に対して、チアゾー
ル系架橋促進剤を併用すると、より一層圧縮永久歪み特
性が劣化していた。しかし、クロロプレン組成物を、特
にパッキン材、シール材、目地材、緩衝材等の圧力が加
わるような部位における建築材料、機械部品材料に対し
て適用したときには、圧縮歪みを減少させることが特に
強く要求されてきている。
However, as a result of studies by the present inventor, such a conventional cured product of a chloroprene composition was not satisfactory in terms of compression set resistance. Furthermore, when a thiazole crosslinking accelerator was used in combination with this compounding system, the compression set characteristics were further deteriorated. However, when the chloroprene composition is applied to a building material or a mechanical component material in a portion where pressure is applied, such as packing material, sealing material, joint material, cushioning material, etc., it is particularly strong to reduce the compression strain. Has been requested.

【0005】本発明の課題は、メルカプタン変性または
ザントゲン変性のクロロプレンゴムを主成分とする加硫
ゴムを成形するための組成物において、特にその耐圧縮
永久歪み性を向上させることである。
An object of the present invention is to improve the compression set resistance of a composition for molding a vulcanized rubber containing a mercaptan-modified or xanthogen-modified chloroprene rubber as a main component.

【0006】[0006]

【課題を解決するための手段】本発明者は、上記の欠点
を改良すべく、鋭意努力した結果、メルカプタン変性ま
たはザントゲン変性のクロロプレンゴム100重量部に
対して、(1)ジカテコールボレートのジ−O−トリル
グアニジン塩を0.3〜3.5重量部、(2)チオ尿素
系架橋促進剤を0.3〜3.0重量部、および、(3)
硫黄、硫黄放出型架橋促進剤および硫黄放出型架橋剤か
らなる群より選ばれた一種以上の硫黄系架橋成分を0.
1〜5.0重量部を、必須成分として添加することを試
みた。
The present inventor has made diligent efforts to improve the above-mentioned drawbacks, and as a result, (1) dicatecholborate diene was added to 100 parts by weight of mercaptan-modified or xanthogen-modified chloroprene rubber. 0.3 to 3.5 parts by weight of —O-tolylguanidine salt, 0.3 to 3.0 parts by weight of (2) thiourea crosslinking accelerator, and (3)
One or more sulfur-based crosslinking components selected from the group consisting of sulfur, a sulfur-releasing crosslinking accelerator, and a sulfur-releasing crosslinking agent can be used as
An attempt was made to add 1 to 5.0 parts by weight as an essential component.

【0007】即ち、従来使用されている酸素マグネシウ
ム、酸化亜鉛にチオウレア系促進剤をメインに添加して
いる配合に代えて、この新規な配合を採用してみた結
果、硬化物の圧縮永久歪み試験において、顕著な改善が
見られることを発見し、本発明に到達した。
That is, as a result of adopting this novel composition in place of the conventionally used composition in which a thiourea-based accelerator is mainly added to magnesium oxide and zinc oxide, a compression set test of a cured product was conducted. In the above, it was discovered that a remarkable improvement was observed, and the present invention was reached.

【0008】[0008]

【実施例】本発明で使用できるクロロプレンゴム自体
は、電気化学工業株式会社、東洋ソーダ株式会社、昭和
電工デュポン株式会社等の各社から販売されており、そ
の中のメルカプタン変性タイプ、ザントゲン変性タイプ
のすべてのグレードのクロロプレンゴムを使用すること
ができる。当然、それぞれの製品のタイプのムーニー粘
度や結晶化速度に影響されるものではない。硫黄変性タ
イプのクロロプレンゴムは、架橋特性が異なるので、本
発明には含まれない。
EXAMPLES The chloroprene rubber itself which can be used in the present invention is sold by each company such as Denki Kagaku Kogyo Co., Ltd., Toyo Soda Co., Ltd., Showa Denko Dupont Co., Ltd., among which mercaptan modified type and zantogen modified type are available. All grades of chloroprene rubber can be used. Of course, it is not affected by the Mooney viscosity or crystallization rate of each product type. Sulfur-modified type chloroprene rubbers are not included in the present invention because they have different crosslinking properties.

【0009】成分(1)のジカテコールボレートのジー
O−トリルグアニジン塩の添加量が0.3重量部未満で
あると、架橋密度を上げることができず、3.5重量部
を越えると、架橋密度を大きく上げることはできるが、
架橋速度が速くなりすぎ、加工安定性に欠けたり、架橋
反応後の硬化物が弾性に欠け、引張り強度の低下をまね
く。
If the amount of the dicatecholborate di-O-tolylguanidine salt of component (1) added is less than 0.3 parts by weight, the crosslinking density cannot be increased, and if it exceeds 3.5 parts by weight, Although the crosslink density can be greatly increased,
The cross-linking speed becomes too fast, resulting in poor processing stability, and the cured product after the cross-linking reaction lacks elasticity, leading to a decrease in tensile strength.

【0010】(2)チオ尿素系架橋促進剤としては、チ
オカルバニリド、エチレンチオ尿素、ジエチルチオ尿
素、ジブチルチオ尿素、トリメチルチオ尿素、ジラウリ
ルチオ尿素からなる群より選ばれた一種以上のチオ尿素
系架橋促進剤が好ましく、これらを併用することもでき
る。チオ尿素系架橋促進剤の添加量が0.3重量部未満
であると、架橋密度を上げることができず、3.0重量
部を越えると、架橋密度を大きく上げることはできる
が、架橋速度が速くなりすぎ、加工安定性に欠けたり、
架橋反応後の硬化物が弾性に欠け、引張り強度の低下を
まねく。
(2) As the thiourea crosslinking accelerator, one or more thiourea crosslinking accelerators selected from the group consisting of thiocarbanilide, ethylenethiourea, diethylthiourea, dibutylthiourea, trimethylthiourea and dilaurylthiourea are preferable. , Can also be used together. If the amount of the thiourea crosslinking accelerator added is less than 0.3 parts by weight, the crosslinking density cannot be increased, and if it exceeds 3.0 parts by weight, the crosslinking density can be greatly increased, but the crosslinking rate Becomes too fast, lacks processing stability,
The cured product after the cross-linking reaction lacks elasticity, resulting in a decrease in tensile strength.

【0011】(3)硫黄放出型架橋促進剤としては、テ
トラキス(2−エチルヘキシル)チウラムジスルフィ
ド、テトラメチルチウラムジスルフィド、テトラエチル
チウラム・ジスルフィド、テトラブチルチウラムジスル
フィド、ジペンタメチレンチウラム・テトラスルフィド
からなる群より選ばれた一種以上の架橋促進剤が好まし
い。また、硫黄放出型架橋剤としては、モルホリンジス
ルフィド、アルキルフェノールジスルフィドからなる群
より選ばれた一種以上の硫黄放出型架橋剤が好ましく、
これらを併用することもできる。
(3) The sulfur-releasing crosslinking accelerator is selected from the group consisting of tetrakis (2-ethylhexyl) thiuram disulfide, tetramethylthiuram disulfide, tetraethylthiuram disulfide, tetrabutylthiuram disulfide, dipentamethylenethiuram tetrasulfide. One or more selected crosslinking accelerators are preferred. Further, as the sulfur-releasing crosslinking agent, one or more sulfur-releasing crosslinking agents selected from the group consisting of morpholine disulfide and alkylphenol disulfide are preferable,
These can also be used together.

【0012】本来は、クロロプレンゴムに硫黄系のもの
を添加すると、硬化物の圧縮永久歪が大きくなるが、本
発明の範囲内で各添加剤を併用すれば、従来のクロロプ
レン組成物に比べて、圧縮永久歪を顕著に減少させるこ
とができた。この硫黄系架橋成分の添加量が0.1重量
部未満であると、添加の効果が全くなく、5重量部を越
えて使用すると、やはり硬化物の圧縮永久歪みが増大し
てくる。
Originally, when a sulfur-based chloroprene rubber was added, the compression set of the cured product was increased, but when each additive was used in combination within the scope of the present invention, compared to conventional chloroprene compositions. , The compression set could be significantly reduced. If the amount of the sulfur-based cross-linking component added is less than 0.1 parts by weight, the effect of the addition will be completely absent, and if it is used in excess of 5 parts by weight, the compression set of the cured product will also increase.

【0013】本発明のクロロプレン組成物中には、ゴム
工業において一般的に使用される各種の添加剤、例え
ば、補強剤、充填剤、軟化剤、可ソ剤、老化防止剤、加
工助剤、粘着付与剤を配合することができる。
The chloroprene composition of the present invention contains various additives commonly used in the rubber industry, such as a reinforcing agent, a filler, a softening agent, a softening agent, an antioxidant, a processing aid, A tackifier can be included.

【0014】本発明において採用した架橋促進剤の配合
は、金属酸化物を使用した架橋方式において有効であ
る。この金属酸化物としては、酸化亜鉛、酸化マグネシ
ウムおよび酸化鉛からなる群より選ばれた一種以上の金
属酸化物が好ましく、二種以上の金属酸化物が更に好ま
しい。本発明は、酸化亜鉛と酸化マグネシウムとの併用
系において、特に著しい効果を示すものであった。この
金属酸化物の合計量は、8〜15重量部とすることが好
ましい。
The compounding of the crosslinking accelerator employed in the present invention is effective in the crosslinking method using a metal oxide. The metal oxide is preferably one or more metal oxides selected from the group consisting of zinc oxide, magnesium oxide and lead oxide, and more preferably two or more metal oxides. The present invention exhibits a particularly remarkable effect in a combined system of zinc oxide and magnesium oxide. The total amount of this metal oxide is preferably 8 to 15 parts by weight.

【0015】以下、更に具体的な実験結果を説明する。
表1の実施例1の項目に示す配合比率の配合物を準備し
た。即ち、クロロプレンゴム100gに対して、添加剤
として、ステアリン酸0.5g、老化防止剤2g、カー
ボンブラック30g、炭酸カルシウム20g、軟化剤1
0gを添加した。架橋系として、酸化亜鉛5g、酸化マ
グネシウム4g、ジカテコールボレートのジ−O−トリ
ルグアニジン塩0.5g、トリメチル・チオ尿素1.0
g、エチレン・チオ尿素0.5gおよびテトラキス(2
−エチルヘキシル)チウラムジスルフィド1.0gを配
合した。
Hereinafter, more specific experimental results will be described.
A formulation having a compounding ratio shown in the item of Example 1 in Table 1 was prepared. That is, with respect to 100 g of chloroprene rubber, as additives, 0.5 g of stearic acid, 2 g of antioxidant, 30 g of carbon black, 20 g of calcium carbonate, and 1 of a softening agent.
0 g was added. As a crosslinking system, 5 g of zinc oxide, 4 g of magnesium oxide, 0.5 g of di-O-tolylguanidine salt of dicatecholborate, 1.0 of trimethylthiourea.
g, ethylene / thiourea 0.5 g and tetrakis (2
-Ethylhexyl) thiuram disulfide 1.0g was compounded.

【0016】ここで、表1に示すクロロプレンゴムおよ
び各添加剤として、以下のものを使用した。 クロロプレンゴム(1):昭和電工デュポン株式会社製
「WXJ」 メルカプタン変性 老化防止剤(2):大内新興化学株式会社製「AD」 カーボンブラック(3):旭カーボン株式会社製「旭♯
35」 炭酸カルシウム(4):白石カルシウム株式会社製「シ
ルバーW」 軟化剤(5):出光石油化学株式会社製「NM−26」
Here, the following were used as the chloroprene rubber and each additive shown in Table 1. Chloroprene rubber (1): Showa Denko DuPont Co., Ltd. “WXJ” mercaptan modified antioxidant (2): Ouchi Shinko Chemical Co., Ltd. “AD” carbon black (3): Asahi Carbon Co., Ltd. “Asahi #
35 "Calcium carbonate (4): Shiraishi Calcium Co., Ltd." Silver W "Softening agent (5): Idemitsu Petrochemical Co., Ltd." NM-26 "

【0017】以上の配合物を、10インチオープンロー
ルを用いて60℃で混練りし、ゴム組成物を得た。この
ゴム組成物を、160℃で40分間、金型内で加熱して
架橋反応させ、架橋反応物を得た。この架橋反応物につ
いて、JIS圧縮永久歪み試験に用いるために、厚さ1
2.7mm、直径29.0mmの直円柱形状のスペーサ
ー付きの試験片を得た。この試験片を圧縮装置内にセッ
トし、25%圧縮し、70℃で22時間圧縮状態を保持
した。この試験片を圧縮装置から取り出し、30分後の
試験片の厚さt1 を測定した。下記の式に従って、圧縮
永久歪み率を算出し、表1に示した。
The above compound was kneaded at 60 ° C. using a 10 inch open roll to obtain a rubber composition. This rubber composition was heated at 160 ° C. for 40 minutes in a mold to cause a crosslinking reaction to obtain a crosslinking reaction product. For this cross-linked reaction product, a thickness of 1 was used for use in the JIS compression set test.
A test piece having a right cylindrical columnar spacer having a diameter of 2.7 mm and a diameter of 29.0 mm was obtained. This test piece was set in a compression device, compressed by 25%, and kept in a compressed state at 70 ° C. for 22 hours. The test piece was taken out of the compression device, and after 30 minutes, the thickness t 1 of the test piece was measured. The compression set was calculated according to the following formula and is shown in Table 1.

【0018】 CS(%)=(t0 −t1 )×100/(t0 −t2 ) CS=圧縮永久歪み率(%) t0 =試験片のもとの厚さ(即ち、12.7mm) t1 =試験片を圧縮装置から取り出してから30分後の
厚さ(mm) t2 =スペーサーの厚さ(3.2mm)
CS (%) = (t 0 −t 1 ) × 100 / (t 0 −t 2 ) CS = compression set (%) t 0 = original thickness of the test piece (ie, 12. 7 mm) t 1 = thickness (mm) 30 minutes after taking out the test piece from the compression device t 2 = thickness of spacer (3.2 mm)

【0019】また、表1に示す実施例2〜5と、表2に
示す比較例1〜3の各配合例について、同様にして架橋
反応物を製造し、その圧縮永久歪み率を測定し、表1、
表2に示した。
Further, for each of the compounding examples of Examples 2 to 5 shown in Table 1 and Comparative Examples 1 to 3 shown in Table 2, crosslinking reaction products were produced in the same manner, and the compression set was measured. Table 1,
The results are shown in Table 2.

【0020】[0020]

【表1】 [Table 1]

【0021】[0021]

【表2】 [Table 2]

【0022】表1からわかるように、本実施例の組成物
の場合の圧縮永久歪み率は、10%以下であった。比較
例1〜3の組成物の場合には、圧縮永久歪み率は19%
〜25%であり、2倍以上の数値を示した。従って、本
発明は、圧縮永久歪試験において大きな改善を示すもの
である。
As can be seen from Table 1, the compression set of the composition of this example was 10% or less. In the case of the compositions of Comparative Examples 1 to 3, the compression set was 19%.
It was up to 25%, which was more than doubled. Therefore, the present invention represents a significant improvement in compression set testing.

【0023】[0023]

【発明の効果】以上述べたように、本発明のクロロプレ
ンゴム組成物は、あらゆる温度領域において、従来のク
ロロプレンゴムに比べて30%以上もの圧縮永久歪みの
改善が可能であるので、パッキン材、シール材、目地
材、緩衝材等の圧力が加わるような部位における建築材
料、機械部品材料において、とりわけ有用であって、そ
の産業上の利用価値は非常に大きい。
As described above, the chloroprene rubber composition of the present invention can improve the compression set by 30% or more as compared with the conventional chloroprene rubber in any temperature range. It is particularly useful as a building material and a machine component material in a portion to which pressure is applied, such as a sealing material, a joint material, and a cushioning material, and its industrial utility value is very large.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 メルカプタン変性またはザントゲン変性
のクロロプレンゴム100重量部に対して、 (1)0.3〜3.5重量部のジカテコールボレートの
ジ−O−トリルグアニジン塩 (2)0.3〜3.0重量部のチオ尿素系架橋促進剤、
および (3)0.1〜5.0重量部の、硫黄、硫黄放出型架橋
促進剤および硫黄放出型架橋剤からなる群より選ばれた
一種以上の硫黄系架橋成分を必須成分として含有してい
ることを特徴とする、クロロプレン組成物。
1. To 100 parts by weight of a mercaptan-modified or xanthogen-modified chloroprene rubber, (1) 0.3 to 3.5 parts by weight of dicatecholborate di-O-tolylguanidine salt (2) 0.3 ~ 3.0 parts by weight of a thiourea crosslinking accelerator,
And (3) 0.1 to 5.0 parts by weight of one or more sulfur-based crosslinking components selected from the group consisting of sulfur, sulfur-releasing crosslinking accelerators and sulfur-releasing crosslinking agents as essential components. A chloroprene composition characterized by being present.
JP10935595A 1995-05-08 1995-05-08 Chloroprene composition Expired - Fee Related JP3488310B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10935595A JP3488310B2 (en) 1995-05-08 1995-05-08 Chloroprene composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10935595A JP3488310B2 (en) 1995-05-08 1995-05-08 Chloroprene composition

Publications (2)

Publication Number Publication Date
JPH08302074A true JPH08302074A (en) 1996-11-19
JP3488310B2 JP3488310B2 (en) 2004-01-19

Family

ID=14508132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10935595A Expired - Fee Related JP3488310B2 (en) 1995-05-08 1995-05-08 Chloroprene composition

Country Status (1)

Country Link
JP (1) JP3488310B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002265688A (en) * 2001-03-14 2002-09-18 Fujikura Rubber Ltd Environmentally friendly chloroprene rubber composition
JP2003026862A (en) * 2001-07-18 2003-01-29 Denki Kagaku Kogyo Kk Chloroprene rubber composition
KR100572192B1 (en) * 1998-02-19 2006-04-18 덴끼 가가꾸 고교 가부시키가이샤 Chloroprene rubber composition
JP2013155248A (en) * 2012-01-27 2013-08-15 Bridgestone Corp Rubber composition for air spring

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100572192B1 (en) * 1998-02-19 2006-04-18 덴끼 가가꾸 고교 가부시키가이샤 Chloroprene rubber composition
JP2002265688A (en) * 2001-03-14 2002-09-18 Fujikura Rubber Ltd Environmentally friendly chloroprene rubber composition
JP2003026862A (en) * 2001-07-18 2003-01-29 Denki Kagaku Kogyo Kk Chloroprene rubber composition
JP2013155248A (en) * 2012-01-27 2013-08-15 Bridgestone Corp Rubber composition for air spring

Also Published As

Publication number Publication date
JP3488310B2 (en) 2004-01-19

Similar Documents

Publication Publication Date Title
EP2189498B1 (en) Chloroprene rubber composition and use thereof
US20110166276A1 (en) Antivibration rubber composition
EP1148094B1 (en) Chloroprene-based rubber composition
JP5341298B2 (en) Rubber composition for covering carcass cord and tire using the same
JP2009024045A (en) Vibration-proof rubber composition and vibration-proof rubber produced using the same
JP2007146035A (en) Vibration-proofing rubber composition and method for producing vibration-proofing rubber by using the same
JP3749019B2 (en) Chloroprene-based rubber composition
TW201502186A (en) Rubber composition and vulcanized molding article thereof
JPH08302074A (en) Chloroprene composition
JP2001316525A (en) Chloroprene rubber composition
JP2007224085A (en) Cross-linking rubber composition
JP2001131341A (en) Rubber composition for mounting engine
JP2009242577A (en) Diene-based rubber composition
JPH06279621A (en) Chloroprene rubber composition
JP3887895B2 (en) Chloroprene rubber composition excellent in heat aging resistance and compression set
JP2008095073A (en) Rubber composition for crawler, crawler tread using it or rubber crawler with crawler base
KR100846358B1 (en) Tire bead filler compound
JP5125179B2 (en) Bonding method
JPH10219033A (en) Rubber composition for high-attenuation support
JPH11172046A (en) Rubber composition
JP7488640B2 (en) Rubber composition for seismic isolation structure and seismic isolation structure
JP4680234B2 (en) Rubber composition for covering carcass cord and tire having carcass using the same
JPH06256603A (en) Rubber composition
JPH026777B2 (en)
JP2001310973A (en) Vibration damping material

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071031

Year of fee payment: 4

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081031

Year of fee payment: 5

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091031

Year of fee payment: 6

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091031

Year of fee payment: 6

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121031

Year of fee payment: 9

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20141031

Year of fee payment: 11

LAPS Cancellation because of no payment of annual fees