JP3190146B2 - Novel rubber composition with improved water resistance - Google Patents
Novel rubber composition with improved water resistanceInfo
- Publication number
- JP3190146B2 JP3190146B2 JP31522892A JP31522892A JP3190146B2 JP 3190146 B2 JP3190146 B2 JP 3190146B2 JP 31522892 A JP31522892 A JP 31522892A JP 31522892 A JP31522892 A JP 31522892A JP 3190146 B2 JP3190146 B2 JP 3190146B2
- Authority
- JP
- Japan
- Prior art keywords
- water resistance
- rubber composition
- synthetic silica
- wet
- 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.)
- Expired - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐水性が改善され、か
つ加工性、耐熱老化性、反発弾性、圧縮永久歪にも優れ
た高飽和型ニトリル系エラストマーゴム組成物（以下
「水素化ＮＢＲ組成物」という）に関し、さらに詳しく
は、透明又は自由な着色物が得られる補強充填剤として
湿式法合成珪酸を配合してなる水素化ＮＢＲ組成物にお
いて、その湿式法合成珪酸として疎水性の湿式法合成珪
酸を配合したことを特徴とする耐水性等に優れたゴムを
与えるゴム組成物に関する。BACKGROUND OF THE INVENTION The present invention relates to a highly saturated nitrile elastomer rubber composition (hereinafter referred to as "hydrogenated NBR") having improved water resistance and excellent processability, heat aging resistance, rebound resilience and compression set. More specifically, in a hydrogenated NBR composition obtained by blending a wet synthetic silica as a reinforcing filler capable of obtaining a transparent or free colored material, a hydrophobic wet silica is used as the wet synthetic silica. The present invention relates to a rubber composition which is obtained by adding a synthetic silica to give a rubber excellent in water resistance and the like.
【０００２】[0002]
【従来の技術】従来より、湿式法合成珪酸はカーボンブ
ラツクと共にゴムの補強充填剤として使用されてきてい
る。2. Description of the Related Art Conventionally, wet synthetic silica has been used as a reinforcing filler for rubber together with carbon black.
【０００３】周知の如く、カーボンブラツクは親油性の
ためにゴムとのなじみが良く補強効果も大きいことと、
得られるゴム組成物の耐水性が良好であることが知られ
ている。しかしながら、このカーボンブラツクを充填し
て得られるゴムはその色合いが黒に限定されるという制
約のあることがその欠点として知られている。[0003] As is well known, carbon black is lipophilic and therefore has good compatibility with rubber and a large reinforcing effect.
It is known that the obtained rubber composition has good water resistance. However, it is known that the rubber obtained by filling the carbon black has a limitation that its color is limited to black.
【０００４】一方、同じくゴム補強充填剤として知られ
る湿式法合成珪酸は、引き裂き抵抗性、耐屈曲亀裂性、
耐熱老化性などに優れる他、カーボンブラックでは期待
できない効果として透明又は自由な着色物が得られると
いう特徴を有している。しかしその反面においてカーボ
ンブラツクを配合したものに比べて耐水性が著しく劣る
という問題を有していた。[0004] On the other hand, wet synthetic silica, also known as rubber reinforcing filler, has tear resistance, flex crack resistance,
In addition to being excellent in heat aging resistance, carbon black has a feature that a transparent or free colored material can be obtained as an effect that cannot be expected with carbon black. However, on the other hand, there is a problem that the water resistance is remarkably inferior to that in which carbon black is blended.
【０００５】本発明が対象とする水素化ＮＢＲ組成物
は、耐油性、耐熱性、耐薬品性、耐オゾン性に優れる特
徴を有するとともに、強度特性、耐摩耗性にも優れるこ
とから燃料ホース、オイルシール、Ｏ−シール、パッキ
ン、ガスケット等の用途に使用されているものである
が、このゴム組成物においても上記のようなカーボンブ
ラックあるいは湿式法合成珪酸が補強充填剤として使用
されており、これらの使用において上記と同様の問題が
指摘されている。[0005] The hydrogenated NBR composition to which the present invention is directed is characterized by being excellent in oil resistance, heat resistance, chemical resistance and ozone resistance, and is also excellent in strength characteristics and abrasion resistance. It is used for applications such as oil seals, O-seals, packings, gaskets, etc.In this rubber composition, carbon black or wet synthetic silica as described above is used as a reinforcing filler. Similar problems have been pointed out in these uses.
【０００６】[0006]
【発明が解決しようとする課題】本発明者らは、上記の
水素化ＮＢＲ組成物のうちで透明又は自由な着色物が得
られる湿式法合成珪酸配合のものにおいて、特にその耐
水性を改善した優れた水素化ＮＢＲ組成物を開発するた
めに鋭意検討してきた。DISCLOSURE OF THE INVENTION The present inventors have improved the water resistance of the above-mentioned hydrogenated NBR compositions, especially those containing a wet-processed synthetic silicic acid which can provide a transparent or free colored product. Intensive investigations have been made to develop excellent hydrogenated NBR compositions.
【０００７】その結果、意外にも疎水性の湿式法合成珪
酸を補強充填剤として配合した場合には、耐水性を改良
した水素化ＮＢＲ組成物の得られることを見出した。ま
たこの水素化ＮＢＲ組成物は、耐水性の向上に加えて、
加工性、耐熱老化性、反発弾性、圧縮永久歪等について
も優れた特性を示すことを見出した。[0007] As a result, it has been surprisingly found that a hydrogenated NBR composition with improved water resistance can be obtained when hydrophobic wet synthetic silica is added as a reinforcing filler. Further, this hydrogenated NBR composition, in addition to the improvement of water resistance,
It has also been found that they exhibit excellent properties in terms of workability, heat aging resistance, rebound resilience, compression set and the like.
【０００８】本発明はこのような知見に基づいてなされ
たものであり、その目的は、透明又は自由な着色物が得
られるという利点を有しながら、耐水性も優れた新規な
水素化ＮＢＲ組成物を提供することにある。The present invention has been made based on such findings, and an object of the present invention is to provide a novel hydrogenated NBR composition which has an advantage that a transparent or free colored material can be obtained and has excellent water resistance. To provide things.
【０００９】本発明の別の目的は、耐水性の向上と共
に、加工性、耐熱老化性、反発弾性、圧縮永久歪などに
も優れた新規な水素化ＮＢＲ組成物を提供することにあ
る。Another object of the present invention is to provide a novel hydrogenated NBR composition which is improved in water resistance and excellent in workability, heat aging resistance, rebound resilience, compression set and the like.
【００１０】[0010]
【課題を解決するための手段】本発明者らは、上記目的
を達成するために、上記特許請求の範囲の各請求項に記
載した発明を完成した。Means for Solving the Problems In order to achieve the above object, the present inventors have completed the invention described in each of the claims.
【００１１】すなわち本発明の新規なゴム組成物の特徴
は、補強充填剤として、ジーｎ−ブチルアミン吸着量
（以下「ＤＢＡ吸着量」という）が１００ｍ・ｍｏｌ／
ｋｇ以下、より好ましくは６０ｍ・ｍｏｌ／ｋｇ以下の
疎水性の湿式法合成珪酸を配合した水素化ＮＢＲ組成物
からなるところにある。That is, the novel rubber composition of the present invention is characterized in that as a reinforcing filler, the adsorbed amount of di-n-butylamine (hereinafter referred to as “DBA adsorbed amount”) is 100 m · mol / mol.
kg or less, more preferably 60 mmol / kg or less of a hydrous NBR composition containing hydrophobic wet synthetic silica.
【００１２】本発明において耐水性を改良するために用
いることができる疎水性の湿式法合成珪酸は、ＤＢＡ吸
着量１００ｍ・ｍｏｌ／ｋｇ以下であることが必要であ
り、後述の実施例において示すように、ＤＢＡ吸着量の
値が大きくなると水素化ＮＢＲ組成物の耐水性を改善す
る効果が不充分である。In the present invention, the hydrophobic wet-processed silicic acid that can be used to improve the water resistance needs to have a DBA adsorption amount of 100 mmol / kg or less. In addition, when the value of the DBA adsorption amount is large, the effect of improving the water resistance of the hydrogenated NBR composition is insufficient.
【００１３】本発明において用いられる珪酸の疎水性の
度合は、上記のように「ＤＢＡ吸着量」により知ること
ができる。すなわち、珪酸粒子はその表面上に多量のシ
ラノール基が存在して、親水性を示すことが知られてい
る。またジーｎ−ブチルアミンはイオン結合的に珪酸粒
子表面上に吸着されることも知られている（R.Meyer:Ka
utschuku.Gummi,7[8],180-182WT(1954))。このため、例
えば疎水性に表面処理された湿式法合成珪酸上に残存す
るシラノール基に、このジーｎ−ブチルアミンを結合す
るという方法を、珪酸の疎水化の度合を知る手段として
利用できるのである。The degree of hydrophobicity of the silicic acid used in the present invention can be determined from the “DBA adsorption amount” as described above. That is, it is known that silicic acid particles have a large amount of silanol groups on the surface and exhibit hydrophilicity. It is also known that di-n-butylamine is ionically adsorbed on the surface of silicate particles (R. Meyer: Ka
utschuku.Gummi, 7 [8], 180-182WT (1954)). For this reason, for example, a method in which this di-n-butylamine is bonded to the silanol groups remaining on the wet-processed synthetic silicic acid that has been hydrophobically surface-treated can be used as a means for determining the degree of hydrophobicity of the silicic acid.
【００１４】本発明において、ＤＢＡ吸着量が１００ｍ
・ｍｏｌ／ｋｇ以下である小さい値の湿式法合成珪酸
が、これを配合したゴム組成物の耐水性を改善する理由
は、シラノール基による親水性の性質を示す粒子表面
が、良く疎水性に表面処理されることで、本来、湿式法
合成珪酸の持つ補強充填剤としての特性を大きく損なう
ことなく、配合したゴム組成物に良好な耐水性を付与し
得るからと考えられる。In the present invention, the DBA adsorption amount is 100 m
The reason why the wet-processed synthetic silica having a small value of not more than mol / kg improves the water resistance of the rubber composition containing the same is that the surface of the particles exhibiting the hydrophilic property due to the silanol group has a good hydrophobic surface. It is considered that by the treatment, good water resistance can be originally imparted to the compounded rubber composition without significantly impairing the properties of the wet synthetic silica as a reinforcing filler.
【００１５】又、本発明において使用される疎水性の湿
式法合成珪酸は、その他の物性に特に制限されるもので
はないが、ゴムの補強充填剤として用いられることか
ら、３０〜２５０ｍ2 ／ｇのＢＥＴ比表面積を有するも
のが好適に使用され、また従来の湿式法合成珪酸と同様
の配合方法、配合量で補強充填剤として使用することが
できる。The hydrophobic wet-processed silicic acid used in the present invention is not particularly limited to other physical properties, but is used as a reinforcing filler for rubber, so that it is 30 to 250 m 2 / g. The BET specific surface area is preferably used, and it can be used as a reinforcing filler in the same blending method and blending amount as those of conventional wet synthetic silica.
【００１６】本発明で用いることができる疎水性の湿式
法合成珪酸を得る方法としては、特に限定されるもので
はなく有機珪素化合物を用いる公知の方法が特に制限な
く使用される。例えば特公昭４２−２６１７９号にみら
れるオルガノポリシロキサンをシリカに噴霧し、２５０
〜３５０℃の温度で約１／２〜２時間加熱処理する方法
等が挙げられる。The method for obtaining hydrophobic wet synthetic silica which can be used in the present invention is not particularly limited, and a known method using an organic silicon compound is used without any particular limitation. For example, the organopolysiloxane found in Japanese Patent Publication No.
A method of performing a heat treatment at a temperature of about 350 ° C. for about 1/2 to 2 hours.
【００１７】本発明における水素化ＮＢＲとして具体的
には、Ｚｅｔｐｏｌ２０００Ｌ（日本ゼオン社製）等を
例示することができる。[0017] Specific examples of the hydrogenated NBR in the present invention include Zetpol 2000L (manufactured by Zeon Corporation).
【００１８】本発明の新規なゴム組成物においては、上
記疎水性の湿式法合成珪酸を補強充填剤として配合する
他、加硫剤，加硫助剤，老化防止剤等、従来の水素化Ｎ
ＢＲ組成物を構成する種々の添加剤を格別制限されるこ
となく同様に用いることができ、また加硫等についても
同様に行なうことができる。In the novel rubber composition of the present invention, the above-mentioned conventional hydrogenated N 2 compounds such as vulcanizing agents, vulcanizing aids, anti-aging agents and the like are incorporated in addition to the above-mentioned hydrophobic wet-processed silicic acid as a reinforcing filler.
Various additives constituting the BR composition can be similarly used without any particular limitation, and vulcanization and the like can be similarly performed.
【００１９】[0019]
【実施例】以下、本発明を更に具体的に説明するため実
施例を示すが、本発明はこれらの実施例に限定されるも
のではない。尚、実施例及び比較例における各種物性測
定と試験は下記の方法によって行なった。EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the present invention is limited thereto. The measurements and tests of various physical properties in Examples and Comparative Examples were performed by the following methods.
【００２０】１）ＤＢＡ吸着量 乾操試料２５０ｍｇを精秤し、これに５０ｍｌのＮ／５
００−・ジーｎ−ブチルアミン溶液（石油べンジン溶
媒）を加え、２０℃で約２時間放置する。この上澄液２
５ｍｌにクロロホルム５ｍｌ、指示薬（クリスタルバイ
オレット）２〜３滴を加え、紫色が青色に変るまでＮ／
１００−過塩素酸溶液（無水酢酸溶媒）で滴定し、この
時の滴定値をＡｍｌとする。1) Amount of adsorbed DBA 250 mg of a dry sample was precisely weighed, and 50 ml of N / 5 was added thereto.
A 00-.di-n-butylamine solution (petroleum benzene solvent) is added, and the mixture is left at 20 ° C. for about 2 hours. This supernatant 2
5 ml of chloroform and 2 to 3 drops of indicator (crystal violet) are added to 5 ml of N / N until purple changes to blue.
Titrate with a 100-perchloric acid solution (acetic anhydride solvent), and let the titration value at this time be Aml.
【００２１】別にブランクを行ないＢｍｌとし、次式に
よってＤＢＡ吸着量を算出した。A blank was separately prepared to obtain Bml, and the DBA adsorption amount was calculated by the following equation.
【００２２】ＤＢＡ吸着量（ｍ・ｍｏｌ／ｋｇ）＝８０
×（Ｂ−Ａ）ｆ ただし ｆはＮ／１００−過塩素酸溶液の力価 ２）ＢＥＴ比表面積 カンターソープ（米国Quantachrome社製）を用いて１点
法により測定した。DBA adsorption amount (m · mol / kg) = 80
× (BA) f where f is the titer of the N / 100-perchloric acid solution 2) BET specific surface area Measured by a one-point method using a canter soap (manufactured by Quantachrome Co., USA).
【００２３】３）ムーニー粘度 ムーニー粘度計（島津製作所製、SMV-200 型粘度計）を
用い、温度１４５℃、Ｌ型ローターにて測定した。3) Mooney viscosity Using a Mooney viscometer (manufactured by Shimadzu Corporation, SMV-200 type viscometer), the temperature was measured at 145 ° C. using an L-type rotor.
【００２４】４）加硫物特性 ＪＩＳ Ｋ６３Ｏｌの試験法に準じ、測定した。4) Properties of vulcanized product Measured according to the test method of JIS K63Ol.
【００２５】耐熱老化試験は１７５℃×７２時間とし
た。The heat aging test was performed at 175 ° C. for 72 hours.
【００２６】５）耐水性試験 ２０ｍｍ×３０ｍｍ×２ｍｍの試験片を１００℃×７０
時間浸漬させ、吸水膨潤による浸漬前後の重量変化率を
測定した。5) Water resistance test A test piece of 20 mm × 30 mm × 2 mm was heated at 100 ° C. × 70.
After immersion for a time, the rate of weight change before and after immersion due to water absorption swelling was measured.
【００２７】実施例１ ＤＢＡ吸着量２８０ｍ・ｍｏｌ／ｋｇ、ＢＥＴ比表面積
ｌ９８ｍ2 ／ｇの未処理の湿式法合成珪酸 ニップシ一
ルＡＱ−Ｓ（日本シリカ工業社製）を、ジメチルシリコ
ーンオイル ＫＦ９６（信越化学工業社製）１５部を用
いてその表面を疎水化処理し、疎水性の湿式法合成珪酸
とした。得られた粉末の物性値を表１に示した。Example 1 An untreated wet-processed synthetic silicate AQ-S (manufactured by Nippon Silica Co., Ltd.) having a DBA adsorption amount of 280 m · mol / kg and a BET specific surface area of 198 m 2 / g was converted to dimethyl silicone oil KF96 ( Using 15 parts of Shin-Etsu Chemical Co., Ltd.), the surface was subjected to a hydrophobic treatment to obtain a hydrophobic wet-process synthetic silica. Table 1 shows the physical property values of the obtained powder.
【００２８】水素化ＮＢＲ Ｚｅｔｐｏｌ２０００Ｌ
（日本ゼオン社製）１００部を８インチロールに巻きつ
け、この疎水性の湿式法合成珪酸を４０部、ステアリン
酸を０．５部、亜鉛華＃を３部、ナウガード４４５（ユ
ニロイヤル社製）を１．５部、ペロキシモンＦ−４０
（日本油脂社製）を８部、それぞれ添加して充分に混練
した。Hydrogenated NBR Zetpol 2000L
100 parts (manufactured by Zeon Corporation) are wound around an 8-inch roll, and 40 parts of this hydrophobic wet-processed silicic acid, 0.5 part of stearic acid, 3 parts of zinc white #, Nowguard 445 (manufactured by Uniroyal Corporation) ), 1.5 parts of Peroximon F-40
8 parts (manufactured by NOF CORPORATION) were added and kneaded sufficiently.
【００２９】この配合物の未加硫物特性をム一ニー粘度
計にて測定するとともに、１７０℃×２０分プレス加硫
し、更に１５０℃×４時間オーブン中で加硫した。The properties of the unvulcanized product were measured by a Mooney viscometer, press-cured at 170 ° C. for 20 minutes, and further vulcanized in an oven at 150 ° C. for 4 hours.
【００３０】この加硫物について、加硫物特性と耐水性
を測定した（以下、評価法は実施例、比較例とも同
様）。結果を表１に示した。The vulcanized product was measured for its properties and water resistance (the evaluation method is the same in Examples and Comparative Examples). The results are shown in Table 1.
【００３１】実施例２ 実施例１におけるニツプシールＡＱ−Ｓを、ニップシー
ルＥ−２００Ａ（日本シリカ工業社製；ＤＢＡ吸着量２
４０ｍ・ｍｏｌ／ｋｇ、ＢＥＴ比表面積１５０ｍ2 ／
ｇ）に変えた以外は、実施例１と同様にして疎水性の湿
式法合成珪酸を得、これを水素化ＮＢＲ組成物に配合し
て加硫物を製造した。これについて実施例１と同様の評
価を行ないその結果を表１に示した。Example 2 The nip seal AQ-S in Example 1 was replaced with a nip seal E-200A (manufactured by Nippon Silica Industry Co., Ltd .; DBA adsorption amount 2).
40m · mol / kg, BET specific surface area of 150m 2 /
A hydrophobic wet synthetic silica was obtained in the same manner as in Example 1 except that g) was changed to g), and this was mixed with a hydrogenated NBR composition to produce a vulcanized product. This was evaluated in the same manner as in Example 1, and the results are shown in Table 1.
【００３２】実施例３ 実施例１におけるジメチルシリコーンオイルの使用量を
湿式法合成珪酸に対して５部とした以外は、同様に処理
して疎水性の湿式法合成珪酸を得、これを水素化ＮＢＲ
組成物に配合して加硫物を製造した。これについて実施
例１と同様の評価を行ないその結果を表１に示した。Example 3 A hydrophobic wet synthetic silica was obtained in the same manner as in Example 1 except that the amount of dimethyl silicone oil used was changed to 5 parts with respect to the wet synthetic silica. NBR
A vulcanizate was produced by blending with the composition. This was evaluated in the same manner as in Example 1, and the results are shown in Table 1.
【００３３】比較例１ 実施例１における疎水性の湿式法合成珪酸を、未処理の
湿式法合成珪酸ニップシールＡＱ−Ｓ（前出）に変えて
配合した以外は同様にして、水素化ＮＢＲ組成物の加硫
物を製造した。これについて実施例１と同様の評価を行
ないゴム組成物の耐水性を評価してその結果を表１に示
した。Comparative Example 1 A hydrogenated NBR composition was prepared in the same manner as in Example 1 except that the hydrophobic wet-processed silicic acid was replaced with an untreated wet-processed silicate nip seal AQ-S (described above). Vulcanizates were produced. This was evaluated in the same manner as in Example 1, and the water resistance of the rubber composition was evaluated. The results are shown in Table 1.
【００３４】比較例２ 実施例２における疎水性の湿式法合成珪酸を、未処理の
湿式法合成珪酸ニップシールＥ−２００Ａ（前出）に変
えて配合した以外は同様にして、水素化ＮＢＲ組成物を
製造した。これについて実施例１と同様の評価を行ない
ゴム組成物の耐水性を評価してその結果を表１に示し
た。Comparative Example 2 A hydrogenated NBR composition was prepared in the same manner as in Example 2 except that the hydrophobic wet-processed synthetic silicate was replaced with an untreated wet-processed silicate nip seal E-200A (supra). Was manufactured. This was evaluated in the same manner as in Example 1, and the water resistance of the rubber composition was evaluated. The results are shown in Table 1.
【００３５】比較例３ 実施例１における疎水性の湿式法合成珪酸を、カーボン
ブラツクＨＡＦ（東海カーボン社製）に変えて配合した
以外は同様にして、水素化ＮＢＲ組成物を製造した。こ
れについて実施例１と同様の評価を行ないカーボンブラ
ック配合のゴム組成物の耐水性を評価しその結果を表１
に示した。なおこのカーボンブラック配合について測定
したＤＢＡ吸着量を表１に併せて示した。Comparative Example 3 A hydrogenated NBR composition was produced in the same manner as in Example 1, except that the hydrophobic wet-processed synthetic silica was changed to a carbon black HAF (manufactured by Tokai Carbon Co., Ltd.). This was evaluated in the same manner as in Example 1, and the water resistance of the rubber composition containing carbon black was evaluated.
It was shown to. Table 1 also shows the DBA adsorption amount measured for this carbon black compounding.
【００３６】[0036]
【表１】 [Table 1]
【００３７】表１の結果から、実施例１〜３は、比較例
１〜２（未処理の湿式法合成珪酸）に比べて、耐水性
（重量変化率）が大幅に改善されていることが分かる。
特に実施例１〜２は比較例３（カーボンブラック）に比
べても良好な値である。また、各実施例は、比較例に比
べ、良好な耐水性とともに、加工性、耐熱老化性（耐熱
老化試験後の結果から分かる）、反発弾性、圧縮永久歪
にも優れていることが分かる。From the results shown in Table 1, it can be seen that Examples 1 to 3 have significantly improved water resistance (weight change rate) as compared with Comparative Examples 1 and 2 (untreated wet synthetic silica). I understand.
In particular, Examples 1 and 2 are good values as compared with Comparative Example 3 (carbon black). In addition, it can be seen that each of the examples is excellent in workability, heat aging resistance (as can be seen from the results after the heat aging test), rebound resilience, and compression set, as well as good water resistance as compared with the comparative examples.
【００３８】[0038]
【発明の効果】以上の説明から明らかなように、本発明
によれば疎水性の湿式法合成珪酸をゴムの補強充填剤と
して用いることにより、カーボンブラックを配合した場
合と同等、ないしそれ以上の優れた耐水性を有し、しか
も着色の自由な水素化ＮＢＲ組成物ゴム組成物を得るこ
とができるという効果がある。As is apparent from the above description, according to the present invention, by using hydrophobic wet synthetic silica as a reinforcing filler for rubber, it is possible to obtain a material equivalent to or more than carbon black. There is an effect that a hydrogenated NBR composition rubber composition having excellent water resistance and free coloring can be obtained.
【００３９】また加工性、耐熱老化性、反発弾性、圧縮
永久歪にも優れ、特に断熱老化試験の結果から分かるよ
うに、使用に伴う経時的な機械的強度低下の割合が少な
い優れた水素化ＮＢＲ組成物を得ることができるという
効果がある。Further, it is excellent in processability, heat aging resistance, rebound resilience and compression set. In particular, as can be seen from the results of the adiabatic aging test, an excellent hydrogenation with a small decrease in mechanical strength with time due to use. There is an effect that an NBR composition can be obtained.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−111439（ＪＰ，Ａ) 特開 昭62−240338（ＪＰ，Ａ) 特開 昭58−38734（ＪＰ，Ａ) 特開 昭61−215638（ＪＰ，Ａ) 特公 昭42−26179（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) C08L 9/02 C08K 3/36 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-111439 (JP, A) JP-A-62-240338 (JP, A) JP-A-58-38734 (JP, A) 215638 (JP, A) JP 42-26179 (JP, B1) (58) Fields investigated (Int. Cl. 7 , DB name) C08L 9/02 C08K 3/36
Claims (2)
・ｍｏｌ／ｋｇ以下の疎水性の湿式法合成珪酸を配合し
た高飽和型ニトリル系エラストマーゴム組成物からなる
ことを特徴とする新規なゴム組成物。1. The adsorption amount of g-n-butylamine is 100 m
-A novel rubber composition comprising a highly saturated nitrile-based elastomer rubber composition blended with a hydrophobic wet synthetic silica having a mol / kg or less.
シリコーンオイルで表面が疎水化処理された疎水性の湿
式法合成珪酸であることを特徴とする新規なゴム組成
物。2. A novel rubber composition, wherein the wet synthetic silica of claim 1 is a hydrophobic wet synthetic silica whose surface is hydrophobized with dimethyl silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31522892A JP3190146B2 (en) | 1992-11-25 | 1992-11-25 | Novel rubber composition with improved water resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31522892A JP3190146B2 (en) | 1992-11-25 | 1992-11-25 | Novel rubber composition with improved water resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06157825A JPH06157825A (en) | 1994-06-07 |
| JP3190146B2 true JP3190146B2 (en) | 2001-07-23 |
Family
ID=18062937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31522892A Expired - Fee Related JP3190146B2 (en) | 1992-11-25 | 1992-11-25 | Novel rubber composition with improved water resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3190146B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3534464B2 (en) * | 1994-12-22 | 2004-06-07 | 東ソー・シリカ株式会社 | Partially hydrophobized precipitated silica |
| ES2151635T3 (en) | 1995-01-13 | 2001-01-01 | Bridgestone Corp | PROCESS FOR THE PREPARATION OF PNEUMATIC COVERS. |
| US6022923A (en) * | 1995-01-13 | 2000-02-08 | Bridgestone Corporation | Pneumatic tires |
| US6172157B1 (en) | 1996-06-26 | 2001-01-09 | Bridgestone Corporation | Rubber compositions |
| JP4157608B2 (en) | 1996-06-26 | 2008-10-01 | 株式会社ブリヂストン | Rubber composition |
| EP2233522B1 (en) | 2008-01-18 | 2017-11-01 | Bridgestone Corporation | Rubber composition and tire |
| EP2272909B1 (en) | 2008-04-30 | 2015-11-25 | Bridgestone Corporation | Tire prepared by using rubber composition containing modified polymer |
| JP5885504B2 (en) | 2009-04-28 | 2016-03-15 | 株式会社ブリヂストン | Pneumatic tire |
| JP5545619B2 (en) | 2009-07-22 | 2014-07-09 | 株式会社ブリヂストン | tire |
| JP2017061345A (en) * | 2016-12-16 | 2017-03-30 | 昭和電工パッケージング株式会社 | Lid material for preventing adhesion of content |
-
1992
- 1992-11-25 JP JP31522892A patent/JP3190146B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06157825A (en) | 1994-06-07 |
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