JP2006219505A - Composition for vulcanizing chlorinated polyethylene - Google Patents

Composition for vulcanizing chlorinated polyethylene Download PDF

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JP2006219505A
JP2006219505A JP2005028508A JP2005028508A JP2006219505A JP 2006219505 A JP2006219505 A JP 2006219505A JP 2005028508 A JP2005028508 A JP 2005028508A JP 2005028508 A JP2005028508 A JP 2005028508A JP 2006219505 A JP2006219505 A JP 2006219505A
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chlorinated polyethylene
composition
vulcanizing
vulcanization
weight
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Masayoshi Nakamura
正吉 中村
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Osaka Soda Co Ltd
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Daiso Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a composition for organic peroxide-vulcanization of a chlorinated polyethylene for realizing more excellent heat aging resistance than before and a vulcanizate obtained by vulcanizing the composition for vulcanization. <P>SOLUTION: The composition comprises 100 pts.wt. of the chlorinated polyethylene and, incorporated therewith, (A) 0.1-8 pts.wt. of an organic peroxide and (B) 0.05-1 pt.wt. of hydroquinone. The vulcanizate of the chlorinated polyethylene obtained by vulcanizing the composition for vulcanization is excellent in heat aging resistance and is applicable for products, for example, rubber hoses for automobiles, or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、有機過酸化物加硫可能な塩素化ポリエチレン加硫用組成物及びその加硫物に関する。   The present invention relates to a chlorinated polyethylene vulcanizable composition capable of organic peroxide vulcanization and a vulcanized product thereof.

塩素化ポリエチレンはその優れた耐熱性、耐油性、耐候性、耐オゾン性などを生かしてゴム製品の材料として広く用いられている。ゴム製品は架橋することにより種々の物性が向上するが、塩素化ポリエチレンはチアジアゾール系化合物、メルカプトトリアジン系化合物のほか有機過酸化物で加硫できることが知られている。また、これらの加硫剤の中では有機過酸化物が耐熱老化性において優秀なゴム製品を得られることが知られている。
また特開H6−157824号には、過酸化物で硬化できるエラストマーのためのスコーチ遅延剤組成物として、ヒドロキノンとスルフェンアミドを必須成分とする技術が開示されているが、耐熱老化性についての記載はない。
特開H6−157824号
Chlorinated polyethylene is widely used as a material for rubber products by taking advantage of its excellent heat resistance, oil resistance, weather resistance, ozone resistance and the like. Although various physical properties of rubber products are improved by crosslinking, it is known that chlorinated polyethylene can be vulcanized with organic peroxides in addition to thiadiazole compounds and mercaptotriazine compounds. Among these vulcanizing agents, it is known that an organic peroxide can provide a rubber product excellent in heat aging resistance.
JP-A-6-157824 discloses a technique comprising hydroquinone and sulfenamide as essential components as a scorch retarder composition for an elastomer that can be cured with a peroxide. There is no description.
JP-A-H6-157824

本発明は、上記のような実状から、従来よりも優れた耐熱老化性をもつ塩素化ポリエチレンの有機過酸化物加硫用組成物の提供を目的としたものである。   The present invention aims to provide a composition for organic peroxide vulcanization of chlorinated polyethylene having a heat aging resistance superior to that of the prior art from the above-described actual situation.

本発明者らは、上記の課題を解決するため種々検討を重ねた結果、有機過酸化物加硫可能な塩素化ポリエチレン加硫用組成物にヒドロキノンを添加することにより耐熱老化性が著しく向上することを見出し、本発明を完成するに至った。   As a result of repeated studies to solve the above-mentioned problems, the present inventors remarkably improve the heat aging resistance by adding hydroquinone to a chlorinated polyethylene vulcanizable composition capable of organic peroxide vulcanization. As a result, the present invention has been completed.

すなわち本発明による塩素化ポリエチレン加硫用組成物は、
塩素化ポリエチレン100重量部に対して
(A)有機過酸化物 0.1〜8重量部
(B)ヒドロキノン 0.05〜1重量部
を配合することを特徴とするものである。
また、本発明は上記加硫用組成物を加硫してなる、塩素化ポリエチレン加硫物に関する。
That is, the chlorinated polyethylene vulcanizing composition according to the present invention is
(A) 0.1 to 8 parts by weight of organic peroxide (B) 0.05 to 1 part by weight of hydroquinone is blended with 100 parts by weight of chlorinated polyethylene.
The present invention also relates to a chlorinated polyethylene vulcanized product obtained by vulcanizing the above vulcanizing composition.

本発明によれば、耐熱老化性が優れた塩素化ポリエチレン加硫用組成物を得ることができ工業的にきわめて有用である。   According to the present invention, a chlorinated polyethylene vulcanizing composition having excellent heat aging resistance can be obtained, which is extremely useful industrially.

本発明で用いられる塩素化ポリエチレンの製法は特に限定されるものではないが、ポリエチレン粉末または粒子を水性懸濁液中もしくは有機溶媒中で塩素化することにより得られるものである。
原料となるポリエチレンはエチレン単独重合体、またはエチレンと共重合可能なコモノマーとの共重合体である。コモノマーの例としては、プロピレン、1−ブテン、1−ペンテン、1−ヘキセン、1−オクテン、4−メチル−ペンテン−1等のα−オレフィン類;ビニルアセテート、エチルアセテート等のアセテート類;(メタ)アクリル酸;(メタ)アクリル酸メチル、(メタ)アクリル酸エチル等の(メタ)アクリル酸エステル類が挙げられる。ポリエチレンの重量平均分子量は好ましくは4万〜70万、より好ましくは5万〜30万である。原料となるポリエチレンは高密度ポリエチレンの他、これに低密度ポリエチレンをブレンドしたものでもよい。
The production method of the chlorinated polyethylene used in the present invention is not particularly limited, but it can be obtained by chlorinating polyethylene powder or particles in an aqueous suspension or an organic solvent.
The polyethylene used as a raw material is an ethylene homopolymer or a copolymer with a comonomer copolymerizable with ethylene. Examples of comonomers include: α-olefins such as propylene, 1-butene, 1-pentene, 1-hexene, 1-octene and 4-methyl-pentene-1; acetates such as vinyl acetate and ethyl acetate; ) Acrylic acid; (meth) acrylic acid esters such as methyl (meth) acrylate and ethyl (meth) acrylate. The weight average molecular weight of polyethylene is preferably 40,000 to 700,000, more preferably 50,000 to 300,000. The polyethylene used as a raw material may be a blend of low density polyethylene in addition to high density polyethylene.

本発明で用いられる塩素化ポリエチレンの塩素含量は、加硫物を加硫ゴムとして用いる場合、好ましくは20〜50重量%、より好ましくは25〜45%である。塩素含有量が多すぎても少なすぎても、得られる組成物は硬度が高すぎることがある。非晶性もしくは実質的に非晶性の塩素化ポリエチレンが好ましい。   The chlorine content of the chlorinated polyethylene used in the present invention is preferably 20 to 50% by weight, more preferably 25 to 45% when the vulcanized product is used as a vulcanized rubber. Whether the chlorine content is too high or too low, the resulting composition may be too hard. Amorphous or substantially amorphous chlorinated polyethylene is preferred.

また塩素化ポリエチレンは、単独で用いても良いが、塩素化ポリエチレンと相溶性のある他種ゴムを塩素化ポリエチレンより少ない量ブレンドしてもよい。塩素化ポリエチレンとブレンドする他のゴムとしては、エピクロロヒドリンゴム、ニトリルゴム、スチレンブタジエンゴム、クロロプレンゴムなどが挙げられる。   Chlorinated polyethylene may be used alone, but other types of rubbers compatible with chlorinated polyethylene may be blended in a smaller amount than chlorinated polyethylene. Examples of other rubber blended with chlorinated polyethylene include epichlorohydrin rubber, nitrile rubber, styrene butadiene rubber, and chloroprene rubber.

本発明で用いられる有機過酸化物としてはEPDM、シリコーンゴム、ジエン系ゴムなどを加硫する際に用いられる公知の有機過酸化物系加硫剤を使用でき、例えばケトンパーオキサイド類、パーオキシケタール類、ハイドロパーオキサイド類、ジアルキルパーオキサイド類、ジアシルパーオキサイド類、パーオキシエステル類、パーオキシジカーボーネート類があげられる。パーオキシケタール類、ジアルキルパーオキサイド類は好ましい有機過酸化物である。パーオキシケタール類の具体例として、1,1−ビス(t−ブチルパーオキシ)3,3,5−トリメチルシクロヘキサン、n-ブチル−4,4−ビス(t−ブチルパーオキシトなどが、ジアルキルパーオキサイド類の具体例としてジクミルパーオキサイド、2,5-ジメチル−2,5−ジ(t−ブチルパーオキシ)ヘキサン、α,α‘-ビス(t−ブチルパ−オキシ−m−イソプロピル)ベンゼンなどが挙げられる。加工性の面からは、有機過酸化物の半減期10時間を得るための温度が比較的高い方がよく、好ましくは90℃以上、より好ましくは110℃以上である。   As the organic peroxide used in the present invention, known organic peroxide vulcanizing agents used for vulcanizing EPDM, silicone rubber, diene rubber, etc. can be used. For example, ketone peroxides, peroxy Examples include ketals, hydroperoxides, dialkyl peroxides, diacyl peroxides, peroxyesters, and peroxydicarbonates. Peroxyketals and dialkyl peroxides are preferred organic peroxides. Specific examples of peroxyketals include 1,1-bis (t-butylperoxy) 3,3,5-trimethylcyclohexane, n-butyl-4,4-bis (t-butylperoxyt) and the like. Specific examples of peroxides include dicumyl peroxide, 2,5-dimethyl-2,5-di (t-butylperoxy) hexane, α, α'-bis (t-butylperoxy-m-isopropyl) benzene. From the viewpoint of processability, the temperature for obtaining the organic peroxide half-life of 10 hours is preferably relatively high, preferably 90 ° C. or higher, more preferably 110 ° C. or higher.

本発明で用いられるヒドロキノンの純度としては通常に購入できる程度であればよく、そのまま使用できる。材料の混練に際して分散不良の懸念があるので、配合中の可塑剤などの液体成分にあらかじめ添加して溶解しておくほうがよい。
ヒドロキノンの配合量としては塩素化ポリエチレン100重量部に対して0.05〜1重量部、好ましくは0.1〜0.5重量部が良い。配合量が少ないと老化防止効果が少なく、多くなると加硫を妨害し、加硫時間を多くかけないと物性が発現しない。
The purity of the hydroquinone used in the present invention is not limited as long as it can be purchased normally, and can be used as it is. Since there is a concern of poor dispersion when the materials are kneaded, it is better to add and dissolve in advance in a liquid component such as a plasticizer during compounding.
The blending amount of hydroquinone is 0.05 to 1 part by weight, preferably 0.1 to 0.5 part by weight, based on 100 parts by weight of chlorinated polyethylene. If the blending amount is small, the effect of preventing aging is small. If the blending amount is large, vulcanization is hindered, and physical properties are not expressed unless the vulcanization time is increased.

本発明では通常加硫剤と共に加硫を促進するために受酸剤が用いられる。受酸剤としては、加硫時に塩素化ポリエチレンから遊離する塩化水素を補足する金属化合物が使用される。受酸剤となる金属化合物としては酸化マグネシウム、酸化カルシウム等の金属酸化物、水酸化マグネシウム、水酸化カルシウム等の金属水酸化物、合成ハイドロタルサイト等のハイドロタルサイト、ゼオライト系化合物、鉛白、鉛丹、リサージ等が例示される。受酸剤の配合量は塩素化ポリエチレン100重量部に対して好ましくは0.5〜30重量部、より好ましくは5〜20重量部である。   In the present invention, an acid acceptor is usually used together with the vulcanizing agent to accelerate vulcanization. As the acid acceptor, a metal compound that supplements hydrogen chloride released from chlorinated polyethylene during vulcanization is used. Metal compounds that can be used as acid acceptors include metal oxides such as magnesium oxide and calcium oxide, metal hydroxides such as magnesium hydroxide and calcium hydroxide, hydrotalcite such as synthetic hydrotalcite, zeolite compounds, lead white , Red lead, resurge, etc. The amount of the acid acceptor is preferably 0.5 to 30 parts by weight, more preferably 5 to 20 parts by weight with respect to 100 parts by weight of chlorinated polyethylene.

ゼオライト系化合物としては、天然ゼオライトの外、A型、X型、Y型の合成ゼオライト、ソーダライト類、天然ないし合成モルデナイト、ZSM−5などの各種ゼオライト、およびこれらの金属置換体であり、これらは単独で用いても2以上併用してもよい。また金属置換体の金属はナトリウムであることが多い。ゼオライト系化合物としては受酸容能の大きいものが好ましい。ゼオライト系化合物として、活性化されたゼオライト系化合物を使うのが好ましい。活性化されたゼオライト系化合物とは、実質的に水分の少ない状態のものを言い、このように活性化する方法として、ゼオライト系化合物を100℃以上の温度で、乾燥空気、窒素気流下で加熱脱水する方法、もしくは、塩素含有重合体を他の成分と混練りする際に、ゼオライト系化合物を投入して140℃から200℃の混練り温度に晒すことにより活性化する方法等が挙げられる。これらの受酸剤は、単独で用いてもよいし、2種類以上を併用して用いてもよい。   Zeolite compounds include natural zeolite, A-type, X-type, Y-type synthetic zeolite, sodalite, natural or synthetic mordenite, various zeolites such as ZSM-5, and metal substitutes thereof. May be used alone or in combination of two or more. Further, the metal of the metal substitution product is often sodium. As the zeolitic compound, those having a large acid-accepting capacity are preferable. It is preferable to use an activated zeolitic compound as the zeolitic compound. The activated zeolitic compound means a material with substantially less water, and as a method for activating the zeolitic compound in this way, the zeolitic compound is heated at a temperature of 100 ° C. or higher under dry air or nitrogen stream. Examples thereof include a method of dehydration or a method of activating by adding a zeolite compound and exposing it to a kneading temperature of 140 to 200 ° C. when kneading the chlorine-containing polymer with other components. These acid acceptors may be used alone or in combination of two or more.

本発明では通常加硫剤、受酸剤の他、カーボンブラック、無機質充填材が配合される。無機質充填材としてはとしては、含水ケイ酸、ケイ酸マグネシウム、ケイ酸アルミニウム、炭酸カルシウム、水酸化アルミニウムなどが挙げられる。これらの無機充填剤は、単独で用いても良いし、2種類以上併用しても良い。   In the present invention, carbon black and an inorganic filler are usually blended in addition to a vulcanizing agent and an acid acceptor. Examples of the inorganic filler include hydrous silicic acid, magnesium silicate, aluminum silicate, calcium carbonate, aluminum hydroxide and the like. These inorganic fillers may be used alone or in combination of two or more.

本発明組成物には、当該技術分野において通常用いられる各種の配合剤、例えば充填剤、補強剤、可塑剤、安定剤、老化防止剤、滑剤、粘性賦与剤、顔料、難燃剤、紫外線吸収剤、発泡剤、加硫調整剤等を添加することができる。また、強度、剛性の向上のため短繊維等を添加することもできる。   In the composition of the present invention, various compounding agents usually used in the art, such as fillers, reinforcing agents, plasticizers, stabilizers, anti-aging agents, lubricants, viscosity-imparting agents, pigments, flame retardants, ultraviolet absorbers Further, a foaming agent, a vulcanization adjusting agent, and the like can be added. Moreover, a short fiber etc. can also be added for the improvement of intensity | strength and rigidity.

上記塩素化ポリエチレン加硫用組成物を加硫することにより、良好な加硫物性を有する加硫物を得ることができる。   By vulcanizing the chlorinated polyethylene vulcanizing composition, a vulcanized product having good vulcanization properties can be obtained.

本発明組成物の配合は、通常のミキシングロール、バンバリーミキサー、2軸混練押出機、各種ニーダー等を用いて、上記配合材料を混練りして行える。得られた混練物はオープンロール等でシート状のような所要形状にする。加硫成型は、プレス、押し出し機、射出成型機など公知任意の手段で行い、所要形状のゴム製品を得ることができる。加硫条件は100〜200℃で数分間〜2時間の範囲で適宜選ばれる   The composition of the present invention can be blended by kneading the above blended materials using a normal mixing roll, Banbury mixer, twin-screw kneading extruder, various kneaders and the like. The obtained kneaded material is made into a required shape like a sheet with an open roll or the like. Vulcanization molding is performed by any known means such as a press, an extruder, or an injection molding machine to obtain a rubber product having a required shape. Vulcanization conditions are appropriately selected in the range of several minutes to 2 hours at 100 to 200 ° C.

本発明を実施するための具体的な形態を以下に実施例を挙げて説明する。但し本発明はその要旨を逸脱しない限り以下の実施例に限定されるものではない。なお実施例及び比較例で用いた配合材料の詳細は以下の通りである。   Specific modes for carrying out the present invention will be described below with reference to examples. However, the present invention is not limited to the following examples without departing from the gist thereof. In addition, the detail of the compounding material used by the Example and the comparative example is as follows.

*1:塩素化ポリエチレン:ダイソー社製『ダイソラックC-130』塩素含量30%
*2:カーボンブラック:東海カーボン社製『シーストS』
*3:可塑剤:花王社製『トリメックスN−08』
*4:受酸剤:ハイドロタルサイト、協和化学工業社製『DHT−4A』
*5:加硫助剤:ジアリルフタレート、ダイソー社製『ダイソーダップモノマー』
*6:加硫剤:ジクミルパーオキサイド、日本油脂社製『パークミルD』
* 1: Chlorinated polyethylene: Daiso-Lac "Daisolac C-130" chlorine content 30%
* 2: Carbon black: “Seast S” manufactured by Tokai Carbon Co., Ltd.
* 3: Plasticizer: “Trimex N-08” manufactured by Kao Corporation
* 4: Acid acceptor: Hydrotalcite, “DHT-4A” manufactured by Kyowa Chemical Industry Co., Ltd.
* 5: Vulcanization aid: diallyl phthalate, "Daisodap monomer" manufactured by Daiso
* 6: Vulcanizing agent: Dicumyl peroxide, “Park Mill D” manufactured by NOF Corporation

(実施例1)
表1に示すように塩素化ポリエチレン100重量部にカーボンブラック80重量部、可塑剤25重量部、受酸剤10重量部、加硫助剤5重量部、ヒドロキノンを0.1重量部とし、この配合物をニーダーで130℃で6分間混練りした。次いでこの混練り物に、加硫剤としてパークミルD2.5重量部を加え、70〜80℃に加熱されたロールで更に混練りし、厚さ2〜3mmのシート状の加硫用ゴム組成物を作製した。このゴム組成物を、15×15cmの金型に入れてプレス機にて、160℃、100kg/cm2で30分間加熱して、加硫物を得た。
(Example 1)
As shown in Table 1, 80 parts by weight of carbon black, 25 parts by weight of a plasticizer, 10 parts by weight of an acid acceptor, 5 parts by weight of a vulcanizing aid and 0.1 part by weight of hydroquinone are added to 100 parts by weight of chlorinated polyethylene. The blend was kneaded in a kneader at 130 ° C. for 6 minutes. Next, 2.5 parts by weight of Park Mill D as a vulcanizing agent was added to this kneaded product, and further kneaded with a roll heated to 70 to 80 ° C. to obtain a sheet-like rubber composition for vulcanization having a thickness of 2 to 3 mm. Produced. This rubber composition was placed in a 15 × 15 cm mold and heated with a press machine at 160 ° C. and 100 kg / cm 2 for 30 minutes to obtain a vulcanizate.

(比較例1、2)
表1に示す配合材料を同表に示す割合で用いた点を除いて、実施例1と同様の操作を行って、シート状の加硫用ゴム組成物を得、さらにゴム加硫物を得た。
(Comparative Examples 1 and 2)
Except that the compounding materials shown in Table 1 were used in the proportions shown in the table, the same operation as in Example 1 was performed to obtain a sheet-like rubber composition for vulcanization, and further a rubber vulcanizate was obtained. It was.

(性能試験)
実施例および比較例において、得られた加硫用組成物について、JIS K6300(未加硫ゴム物理試験方法)、また得られた加硫物について、JIS K6251(加硫ゴムの引張試験方法)、JIS K6253(加硫ゴムの硬さ試験方法)、JIS K6257(加硫ゴムの老化試験方法)に規定する方法に従って物性試験を行った。得られた結果を表2に示す。
(performance test)
In Examples and Comparative Examples, JIS K6300 (unvulcanized rubber physical test method) for the obtained vulcanized composition, and JIS K6251 (vulcanized rubber tensile test method) for the obtained vulcanized product, Physical properties were tested according to the methods specified in JIS K6253 (vulcanized rubber hardness test method) and JIS K6257 (vulcanized rubber aging test method). The obtained results are shown in Table 2.

上記表中、Vm:JIS K6300のムーニー・スコーチ試験に定める、最低ムーニー粘度
5:JIS K6300のムーニー・スコーチ試験に定める、ムーニー・スコーチ時間
M100:JIS K6251の引張試験に定める、100%伸び時の引張応力
M300:JIS K6251の引張試験に定める、300%伸び時の引張応力
Tb:JIS K6251の引張試験に定める、引張強さ
Eb:JIS K6251の引張試験に定める、切断時伸び
Hs:JIS K6253の硬さ試験に定める、硬さ
△Tb:JIS K6257の老化試験に定める、引張強さ変化率
△Eb:JIS K6257の老化試験に定める、切断時伸び変化率
△Hs:JIS K6257の老化試験に定める、硬さの変化
In the above table, Vm: Minimum Mooney Viscosity as defined in Mooney Scorch Test of JIS K6300 t 5 : Mooney Scorch Time as defined in Mooney Scorch Test of JIS K6300
M 100 : Tensile stress at 100% elongation as defined in JIS K6251 tensile test
M 300 : Tensile stress at 300% elongation as defined in JIS K6251 tensile test
Tb: Tensile strength defined in JIS K6251 tensile test
Eb: Elongation at break as defined in JIS K6251 tensile test
Hs: JIS K6253 hardness test, hardness △ Tb: JIS K6257 aging test, tensile strength change rate △ Eb: JIS K6257 aging test, elongation change rate △ Hs: JIS K6257 Change in hardness determined by aging test

Figure 2006219505
Figure 2006219505

Figure 2006219505
Figure 2006219505

表2から明らかなように、比較例1、2に比べてヒドロキノンを使用した実施例1では、引張強さ変化、切断時伸び変化、いずれも変化率が減少しており、耐熱老化性が向上していることがわかる。   As is clear from Table 2, in Example 1 using hydroquinone as compared with Comparative Examples 1 and 2, the tensile strength change and the elongation change at break were both reduced, and the heat aging resistance was improved. You can see that

本発明により、耐熱性に優れた塩素化ポリエチレン加硫物が得られ、例えば自動車用ゴムホース等に利用され得る。   By this invention, the chlorinated polyethylene vulcanizate excellent in heat resistance is obtained, for example, can be utilized for the rubber hose for motor vehicles.

Claims (2)

塩素化ポリエチレン100重量部に対して
(A)有機過酸化物 0.1〜8重量部
(B)ヒドロキノン 0.05〜1重量部
を配合することを特徴とする塩素化ポリエチレン加硫用組成物。
(A) 0.1 to 8 parts by weight of organic peroxide (B) 0.05 to 1 part by weight of hydroquinone is blended with 100 parts by weight of chlorinated polyethylene. .
請求項1に記載の加硫用組成物を加硫してなる、塩素化ポリエチレン加硫物。 A chlorinated polyethylene vulcanized product obtained by vulcanizing the vulcanizing composition according to claim 1.
JP2005028508A 2005-01-13 2005-02-04 Composition for vulcanizing chlorinated polyethylene Pending JP2006219505A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434730B (en) * 2008-12-05 2013-07-31 东莞市瑞桥电器有限公司 Environment-protective rubber material without phthalate

Citations (5)

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JPS5271694A (en) * 1975-12-12 1977-06-15 Nippon Unicar Co Ltd Semiconductiveeresin compostion having proper exfoliating property
JPH0312438A (en) * 1989-06-09 1991-01-21 Sekisui Chem Co Ltd Resin composition for crosslinking-modifying of polyethylene
JPH03250037A (en) * 1990-02-28 1991-11-07 Nok Corp Rubber composition
JPH05209085A (en) * 1991-03-22 1993-08-20 Elf Atochem North America Inc Scorch-retarding curing/crosslinking agent composition
JPH06157824A (en) * 1992-05-14 1994-06-07 Air Prod And Chem Inc Scorch retarder composition for peroxide-curable elastomer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5271694A (en) * 1975-12-12 1977-06-15 Nippon Unicar Co Ltd Semiconductiveeresin compostion having proper exfoliating property
JPH0312438A (en) * 1989-06-09 1991-01-21 Sekisui Chem Co Ltd Resin composition for crosslinking-modifying of polyethylene
JPH03250037A (en) * 1990-02-28 1991-11-07 Nok Corp Rubber composition
JPH05209085A (en) * 1991-03-22 1993-08-20 Elf Atochem North America Inc Scorch-retarding curing/crosslinking agent composition
JPH06157824A (en) * 1992-05-14 1994-06-07 Air Prod And Chem Inc Scorch retarder composition for peroxide-curable elastomer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434730B (en) * 2008-12-05 2013-07-31 东莞市瑞桥电器有限公司 Environment-protective rubber material without phthalate

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