JPH0717792B2 - Ethylene / α-olefin copolymer rubber composition - Google Patents
Ethylene / α-olefin copolymer rubber compositionInfo
- Publication number
- JPH0717792B2 JPH0717792B2 JP1150486A JP1150486A JPH0717792B2 JP H0717792 B2 JPH0717792 B2 JP H0717792B2 JP 1150486 A JP1150486 A JP 1150486A JP 1150486 A JP1150486 A JP 1150486A JP H0717792 B2 JPH0717792 B2 JP H0717792B2
- Authority
- JP
- Japan
- Prior art keywords
- ethylene
- rubber composition
- weight
- olefin copolymer
- present
- 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
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は高硬度で加工性の良好なエチレン・α−オレフ
ィン共重合ゴム（以下エチレン・α−オレフィンゴムと
略称する）組成物を与えるものであり、本発明による組
成物はエチレン・α−オレフィンゴムの優れた耐熱性、
耐候性とあわさって自動車部品、工業用品等に利用出来
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides an ethylene / α-olefin copolymer rubber (hereinafter abbreviated as ethylene / α-olefin rubber) composition having high hardness and good processability. And the composition according to the present invention has excellent heat resistance of ethylene / α-olefin rubber,
Combined with weather resistance, it can be used for automobile parts, industrial products, etc.
高硬度なエチレン・α−オレフィンゴム組成物を得るに
は、従来ポリエチレン、ポリプロピレン等のポリオレフ
ィン樹脂をエチレン・α−オレフィンゴムに添加する方
法が広く用いられているが、これらポリオレフィン樹脂
を添加する方法は室温から100℃までの温度での未加硫
ゴム組成物の可塑性が著しく小さくなり、ロール加工性
及び押出機への喰込み性が著しく悪化するという欠点を
有していた。このため加工機及び未加硫ゴム組成物を高
温に加温することが必要となり、工程上問題であった。In order to obtain a high hardness ethylene / α-olefin rubber composition, a method of adding a polyolefin resin such as polyethylene or polypropylene to the ethylene / α-olefin rubber has been widely used. However, a method of adding these polyolefin resins. Had the drawback that the plasticity of the unvulcanized rubber composition at room temperature to 100 ° C. was remarkably reduced, and roll processability and biteability into an extruder were significantly deteriorated. Therefore, it is necessary to heat the processing machine and the unvulcanized rubber composition to a high temperature, which is a problem in the process.
本発明の目的は、これら従来技術の加工性の問題を解決
した高硬度な、エチレン・α−オレフィンゴム組成物を
提供することにある。An object of the present invention is to provide a highly hard ethylene / α-olefin rubber composition that solves the problems of the processability of the conventional techniques.
本発明者らは該ゴム組成物の開発について鋭意検討し本
発明に到達した。The present inventors earnestly studied the development of the rubber composition and arrived at the present invention.
すなわち、本発明は、 （Ａ）エチレン・α−オレフィン共重合ゴム55〜95重量
％、および （Ｂ）エチレン50〜95重量％、α，β−不飽和カルボン
酸アルキルエステル５〜49重量％及び無水マレイン酸0.
5〜10重量％よりなるエチレン共重合体５〜45重量％ からなることを特徴とするエチレン・α−オレフィン共
重合ゴム組成物に係るものである。That is, the present invention provides (A) ethylene / α-olefin copolymer rubber 55 to 95% by weight, and (B) ethylene 50 to 95% by weight, α, β-unsaturated carboxylic acid alkyl ester 5 to 49% by weight, and Maleic anhydride 0.
The present invention relates to an ethylene / α-olefin copolymer rubber composition comprising 5 to 45% by weight of an ethylene copolymer of 5 to 10% by weight.
本発明によれば、高硬度で加工性の改良されたゴム組成
物を得ることができる。According to the present invention, a rubber composition having high hardness and improved workability can be obtained.
本発明において、（Ａ）エチレン・α−オレフィン共重
合ゴムとは、エチレンと１種以上のα−オレフィンより
なる共重合体及びエチレンと１種以上のα−オレフィン
と１種以上の非共役ジエンよりなる共重合体を意味し、
α−オレフィンとしてはプロピレン、１−ブテン、１−
ペンテン、１−ヘキセン等が例示され、非共役ジエンと
してはジシクロベンタジエン、エチリデンノルボルネ
ン、1,4−ヘキサジエン、メチルテトラヒドロインデ
ン、メチルノルボルネン等が例示される。In the present invention, the (A) ethylene / α-olefin copolymer rubber is a copolymer of ethylene and one or more α-olefins, and ethylene, one or more α-olefins and one or more non-conjugated dienes. Means a copolymer consisting of
As α-olefin, propylene, 1-butene, 1-
Pentene, 1-hexene and the like are exemplified, and non-conjugated dienes include dicyclopentadiene, ethylidene norbornene, 1,4-hexadiene, methyltetrahydroindene, methylnorbornene and the like.
本発明において、（Ｂ）エチレン共重合体は、エチレン
が50〜95重量％、好ましくは60〜95重量％、α，β−不
飽和カルボン酸アルキルエステルが５〜49重量％、好ま
しくは５〜45重量％、無水マレイン酸が0.5〜10重量
％、好ましくは１〜８重量％よりなり、またα，β−不
飽和カルボン酸アルキルエステルは炭素数が３〜８個の
不飽和カルボン酸、例えばアクリル酸、メタクリル酸な
どのアルキルエステルであって、具体例としてはアクリ
ル酸エチル、アクリル酸ｎ−プロピル、アクリル酸イソ
プロピル、アクリル酸ｎ−ブチル、アクリル酸ｔ−ブチ
ル、アクリル酸イソブチル、メタクリル酸メチル、メタ
クリル酸エチル、メタクリル酸ｎ−プロピル、メタクリ
ル酸イソプロピル、メタクリル酸ｎ−ブチル、メタクリ
ル酸ｔ−ブチル、およびメタクリル酸イソブチルなどで
あり、これらのうちでも特にアクリル酸エチル、アクリ
ル酸ｎ−ブチル、メタクリル酸メチルが好ましい。In the present invention, the ethylene copolymer (B) has an ethylene content of 50 to 95% by weight, preferably 60 to 95% by weight, and an α, β-unsaturated carboxylic acid alkyl ester of 5 to 49% by weight, preferably 5 to 50% by weight. 45% by weight, maleic anhydride 0.5 to 10% by weight, preferably 1 to 8% by weight, and the α, β-unsaturated carboxylic acid alkyl ester is an unsaturated carboxylic acid having 3 to 8 carbon atoms, for example, An alkyl ester such as acrylic acid or methacrylic acid, and specific examples thereof include ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, t-butyl acrylate, isobutyl acrylate, methyl methacrylate. , Ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, t-butyl methacrylate, and methacryl. Examples thereof include isobutyl phosphate, and among these, ethyl acrylate, n-butyl acrylate, and methyl methacrylate are particularly preferable.
またエチレン共重合体（Ｂ）の溶融指数は特に制限され
るものではないが、190℃の溶融指数が0.5〜200g/10分
がのぞましい。The melting index of the ethylene copolymer (B) is not particularly limited, but the melting index at 190 ° C. is preferably 0.5 to 200 g / 10 minutes.
エチレン共重合体（Ｂ）の添加量を５〜45重量％に限定
したのは、この範囲以下では硬度の向上が十分でなく、
またこの範囲以上では硬度の向上は十分であるが、加硫
ゴム組成物の物理的性質が劣り、さらに未加硫ゴム組成
物の加工性が悪化するためである。The reason why the addition amount of the ethylene copolymer (B) is limited to 5 to 45% by weight is that the hardness is not sufficiently improved below this range,
Further, if it is more than this range, the hardness is sufficiently improved, but the physical properties of the vulcanized rubber composition are inferior, and further the processability of the unvulcanized rubber composition is deteriorated.
本発明においては必要に応じてゴム業界で公知の補強
剤、充填剤、軟化剤、可塑剤、加工助剤、亜鉛華、ステ
アリン酸、加硫促進剤、加硫剤、過疎化物等を加えるこ
とが出来る。In the present invention, if necessary, a reinforcing agent, a filler, a softening agent, a plasticizer, a processing aid, zinc white, stearic acid, a vulcanization accelerator, a vulcanizing agent, a devitrification agent, etc. known in the rubber industry may be added. Can be done.
以下実施例で本発明を具体的に説明する。ただし本実施
例は本発明を限定するものではない。The present invention will be specifically described below with reference to examples. However, the present embodiment does not limit the present invention.
第１表に示す配合表に従がって、BR型バンバリーミキサ
ーと８インチロールを用いて混練を行ない、その一部を
180℃の蒸気プレスを用いて６分間加硫を行ない厚さ2mm
のシートを作成した。According to the composition table shown in Table 1, kneading was performed using a BR type Banbury mixer and an 8-inch roll, and a part of the kneading was performed.
Vulcanized for 6 minutes using a steam press at 180 ℃ and thickness is 2mm
Created a sheet of.
未加硫ゴム組成物については、日本ゴム協会標準規格SR
IS 3103に規定されている試験法に準じて50℃、70℃の
可塑度を測定し、加硫ゴム組成物についてはJIS K6301
に従がって、引張試験及び硬度測定を行なった。For unvulcanized rubber composition, Japan Rubber Association Standard SR
According to the test method specified in IS 3103, the plasticity at 50 ° C and 70 ° C was measured. For vulcanized rubber composition, JIS K6301
The tensile test and hardness measurement were performed according to the above.
物性測定結果を第２表に示す。The physical property measurement results are shown in Table 2.
第２表より明らかなごとく、本発明により実施例は、高
硬度を有しながら比較例にくらべて、未加硫ゴム組成物
の加工が通常行なわれる温度範囲の50℃、70℃の可塑度
が小さく、すなわち可塑性が向上しており、ロール加工
性等の加工性が改良されていることがわかる。As is clear from Table 2, the examples according to the present invention have a high hardness and a plasticity of 50 ° C. and 70 ° C. in the temperature range in which the processing of the unvulcanized rubber composition is usually performed, as compared with the comparative examples. Is small, that is, the plasticity is improved, and the processability such as roll processability is improved.
以上述べたごとく、本発明によれば、従来技術に比べ、
ロール加工性等の加工性が良好な、高硬度エチレン・α
−オレフィンゴム組成物を提供することができる。As described above, according to the present invention,
High hardness ethylene / α with good workability such as roll workability
-It is possible to provide an olefin rubber composition.
Claims (1)
ム55〜95重量％、および （Ｂ）エチレン50〜95重量％、α，β−不飽和カルボン
酸アルキルエステル５〜49重量％及び無水マレイン酸0.
5〜10重量％よりなるエチレン共重合体５〜45重量％ からなることを特徴とするエチレン・α−オレフィン共
重合ゴム組成物。1. An (A) ethylene / α-olefin copolymer rubber 55 to 95% by weight, and (B) ethylene 50 to 95% by weight, an α, β-unsaturated carboxylic acid alkyl ester 5 to 49% by weight and anhydrous. Maleic acid 0.
An ethylene / α-olefin copolymer rubber composition comprising 5 to 45% by weight of an ethylene copolymer comprising 5 to 10% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1150486A JPH0717792B2 (en) | 1986-01-21 | 1986-01-21 | Ethylene / α-olefin copolymer rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1150486A JPH0717792B2 (en) | 1986-01-21 | 1986-01-21 | Ethylene / α-olefin copolymer rubber composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62169841A JPS62169841A (en) | 1987-07-27 |
| JPH0717792B2 true JPH0717792B2 (en) | 1995-03-01 |
Family
ID=11779850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1150486A Expired - Fee Related JPH0717792B2 (en) | 1986-01-21 | 1986-01-21 | Ethylene / α-olefin copolymer rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0717792B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0362837A (en) * | 1989-07-31 | 1991-03-18 | Sumitomo Chem Co Ltd | Waterproofing sheet |
| JPH0362836A (en) * | 1989-07-31 | 1991-03-18 | Sumitomo Chem Co Ltd | Rubber composition for rubber article having high tearing strength |
| US9174178B2 (en) | 2010-06-09 | 2015-11-03 | The Procter & Gamble Company | Semi-continuous feed production of liquid personal care compositions |
-
1986
- 1986-01-21 JP JP1150486A patent/JPH0717792B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62169841A (en) | 1987-07-27 |
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