JPH055858B2 - - Google Patents
Info
- Publication number
- JPH055858B2 JPH055858B2 JP58082796A JP8279683A JPH055858B2 JP H055858 B2 JPH055858 B2 JP H055858B2 JP 58082796 A JP58082796 A JP 58082796A JP 8279683 A JP8279683 A JP 8279683A JP H055858 B2 JPH055858 B2 JP H055858B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- oil
- mineral oil
- pour point
- compounding
- 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 - Lifetime
Links
- 229920001971 elastomer Polymers 0.000 claims description 35
- 239000005060 rubber Substances 0.000 claims description 35
- 239000002480 mineral oil Substances 0.000 claims description 22
- 235000010446 mineral oil Nutrition 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 15
- 238000010058 rubber compounding Methods 0.000 claims description 12
- 239000010779 crude oil Substances 0.000 claims description 8
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 12
- 235000019198 oils Nutrition 0.000 description 12
- 239000010734 process oil Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000001993 wax Substances 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 3
- 238000005984 hydrogenation reaction Methods 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002199 base oil Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000009903 catalytic hydrogenation reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Description
本発明は、低温特性の良好なゴム組成物を得る
ことのできるゴム配合用鉱油と、該鉱油を配合し
てなるゴム組成物に関する。さらに詳しくは、ゴ
ムの有する可撓性を低温環境下においても維持し
うるゴム配合用鉱油と、該鉱油を配合してなるゴ
ム組成物に関するものである。
一般にゴムは低温になるにしたがい、ゴムの属
性である弾性、可撓性を喪失して硬度を増し、脆
性を示すようになる。このため、低温環境下にお
ける使用に不都合を生じたり、用途が限定された
りすることからその改良が種々なされてきた。も
つとも広く採用されている方法は、ゴムに植物系
又は鉱物系の油、いわゆるプロセスオイルを配合
する方法である。
しかしながら、従来のプロセスオイル、例えば
パラフイン系あるいはアロマ系プロセスオイルは
流動点が高いため、ゴム組成物の低温性を阻害
し、またナフテン系プロセスオイルは流動点は低
いものの粘度指数も低いため、同様にゴム組成物
の低温性を阻害していた。したがつて、これまで
のプロセスオイルは極低温下（−30〜−70℃）で
はその目的を充分に達しえず、さらにすぐれたプ
ロセスオイルの開発が望まれていた。
本発明は、上記従来の欠点を解消し、低温特性
の良好なゴム組成物を得ることのできるゴム配合
用鉱油と、該鉱油を特定割合で配合してなるゴム
組成物を提供することを目的とするものである。
すなわち本発明は第１に、原油からの潤滑油留
分を精製し、深脱ろう処理してなる、流動点−30
℃以下、かつ粘度指数85以上であるゴム配合用鉱
油を提供するものである。
さらに本発明は第２に、ゴム100重量部に対し
て、原油からの潤滑油留分を精製し、深脱ろう処
理してなる、流動点−30℃以下、かつ粘度指数85
以上であるゴム配合用鉱油を５〜200重量部の割
合で配合してなるゴム組成物を提供するものであ
る。
本発明の鉱油を配合するゴムの種類は特に制限
がなく、天然ゴムあるいは合成ゴムのいずれであ
つてもよい。合成ゴムとしては例えばスチレンブ
タジエンゴム、アクリロニトリル・ブタジエンゴ
ム、クロロブレンゴム、イソブチレン・イソブレ
ンゴム、多硫化ゴム、シリコーンゴム、フツ素ゴ
ム、ウレタンゴム、ステレオゴム、ブタジエンゴ
ム、イソブレンゴム、エチレン・プロピレンゴム
およびこれらをプレンドしたゴムなどが挙げら
れ、とりわけイソブチレン・イソブレンゴムやエ
チレン・プロピレンゴムが好ましい。
本発明のゴム配合用鉱油は、流動点−30℃以
下、かつ粘度指数85以上であることを特徴とする
ものであり、このような特定性質の鉱油をプロセ
スオイルとしてゴムに配合することにより、低温
環境下においても可撓性の維持されたゴム組成物
を得ることができる。
該鉱油の配合量はゴム100重量部に対して、５
〜200重量部、好ましくは50〜120重量部である。
前記したように、本発明は第１のゴム配合用鉱
油は、原油からの潤滑油留分を精製し、深脱ろう
処理してなる、流動点−30℃以下、かつ粘度指数
85以上のものである。このような本発明の第１の
ゴム配合用鉱油は、例えば以下のようにして得る
ことができる。
クウエート原油などの中間基原油から常法によ
り、潤滑油粗原料を調製し、苛酷な水素化処理を
行う。この処理によつて芳香族分などの潤滑油留
分に好ましくない成分を除去したり、有効な成分
に変えたりする反応が行なわれる。この際、いお
う分や窒素分も殆んど除去かれる。
次いで、減圧蒸留により必要な粘度を得るよう
な分留を行なう。しかる後に、既知の溶剤脱ろう
を行ない、通常のパラフインベースオイルが有す
る流動点、すなわち−15〜−10℃程度に脱ろうす
る。
この脱ろう処理後、さらに水素化処理を行ない
芳香族分の大部分を水素化させて飽和分とし、ベ
ースオイルの熱的、化学的な安定性を向上させ
る。しかし、流動点が未だ高いため、プロセスオ
イルとしては適当でない。
そのために引続き深脱ろう処理が行なわれる。
この処理は苛酷な条件での溶剤脱ろう法やゼオラ
イト触媒を用い、該触媒の細孔に吸着されるパラ
フイン（主としてノルマルパラフイン）を選択的
に水素雰囲気下で分解してろう分となるものを除
去する接触水添脱ろう法が適用される。
このようにして流動点が−30℃以下で、かつ粘
度指数が85以上のゴム配合用鉱油を得ることがで
きる。
このようにして得られた本発明のゴム配合用鉱
油を配合したゴム組成物は、低温環境下に使用し
た場合であつてもゴムの有する可撓性が維持され
るなど、ゴムの低温環境下における性質が改良さ
れたものである。
したがつて、本発明のゴム配合用鉱油は、ゴム
工業ならびにこれに付随する自動車、機械、電気
工業などの分野において広く利用することができ
る。
次に、本発明を実施例により説明する。
比較例 １〜６
表−１に示す性状を有する市販の鉱油Ａ油（パ
ラフイン系プロセスオイル）、Ｂ油（ナフテン系
プロセスオイル）、Ｃ油（アロマ系プロセスオイ
ル）、Ｄ油、Ｅ油またはＦ油（比較例１〜６）を
各々ゴムに所定量配合し、ゴム組成物を得た。ゴ
ム組成物の物性の測定結果を表−２に示す。
実施例 １〜５
クウエート原油を常圧蒸留後、減圧蒸留して得
た留出分および残渣油を脱れきした留分を供給原
料としてプロダクトの脱ろう油（最初の脱ろう処
理したもの）の粘度指数が100となるような苛酷
な条件で水素化処理した。
上記の方法で得られたプロダクトを分留し、
100℃の粘度でほぼ2.3cst，5.0cst，10.0cstとなる
ような３種の含ろう油を得た。
これら３種の含ろう油のそれぞれをさらに溶剤
脱ろう処理した。この段階での処理条件は、脱ろ
う油の流動点が−15℃となるようにした。
次いで、上記脱ろう油で芳香族分（ゲルクロマ
トグラフ法による）が1.5重量％以下になるよう
さらに水素化処理を行なつた。
さらに、上記の二段水素化処理油を脱ろう油の
流動点がそれぞれ−40℃（Ｇ油：実施例１）、−40
℃（Ｈ油：実施例２）、−50℃（Ｉ油：実施例３）
となるように溶剤脱ろう処理した。この時得られ
た３種の鉱油の性状を表−１に示す。
このようにして得た鉱油を各々ゴムに所定量配
合し、ゴム組成物を得た。ゴム組成物の物性の測
定結果を表−２に示す。
The present invention relates to a mineral oil for rubber compounding, which makes it possible to obtain a rubber composition with good low-temperature properties, and a rubber composition formed by compounding the mineral oil. More specifically, the present invention relates to a mineral oil for rubber compounding that can maintain the flexibility of rubber even in a low-temperature environment, and a rubber composition formed by blending the mineral oil. Generally, as the temperature decreases, rubber loses its properties of elasticity and flexibility, increases in hardness, and becomes brittle. For this reason, various improvements have been made to avoid inconveniences in use in low-temperature environments and to limit applications. The most widely adopted method is to mix vegetable or mineral oil, so-called process oil, with rubber. However, conventional process oils, such as paraffinic or aromatic process oils, have a high pour point and impede the low-temperature properties of rubber compositions, while naphthenic process oils have a low pour point but a low viscosity index, so This impeded the low-temperature properties of the rubber composition. Therefore, conventional process oils cannot fully achieve their purpose at extremely low temperatures (-30 to -70°C), and the development of even better process oils has been desired. The object of the present invention is to provide a mineral oil for rubber compounding that eliminates the above-mentioned conventional drawbacks and makes it possible to obtain a rubber composition with good low-temperature properties, and a rubber composition formed by blending the mineral oil in a specific proportion. That is. That is, the present invention firstly aims to refine the lubricating oil fraction from crude oil and undergo deep dewaxing treatment to achieve a pour point of -30.
℃ or less and a viscosity index of 85 or more. Furthermore, secondly, the present invention provides a lubricating oil distillate obtained by refining a lubricating oil fraction from crude oil and deep dewaxing treatment for 100 parts by weight of rubber, having a pour point of -30°C or lower and a viscosity index of 85.
The present invention provides a rubber composition containing the mineral oil for rubber compounding in an amount of 5 to 200 parts by weight. The type of rubber to which the mineral oil of the present invention is blended is not particularly limited, and may be either natural rubber or synthetic rubber. Examples of synthetic rubbers include styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, isobutylene-isobrene rubber, polysulfide rubber, silicone rubber, fluorine rubber, urethane rubber, stereo rubber, butadiene rubber, isobrene rubber, ethylene-propylene rubber, and these. Examples include rubber blended with , and isobutylene/isobrene rubber and ethylene/propylene rubber are particularly preferred. The mineral oil for rubber compounding of the present invention is characterized by having a pour point of -30°C or less and a viscosity index of 85 or more, and by blending mineral oil with such specific properties into rubber as a process oil, A rubber composition that maintains flexibility even in a low-temperature environment can be obtained. The blending amount of the mineral oil is 5 parts by weight per 100 parts by weight of rubber.
-200 parts by weight, preferably 50-120 parts by weight. As described above, the first mineral oil for rubber compounding of the present invention is obtained by refining a lubricating oil fraction from crude oil and undergoing deep dewaxing treatment, and having a pour point of -30°C or lower and a viscosity index.
85 or above. The first mineral oil for rubber compounding of the present invention can be obtained, for example, as follows. Lubricating oil crude raw materials are prepared by conventional methods from intermediate base crude oils such as Kuwait crude oil, and subjected to severe hydrogenation treatment. This treatment removes undesirable components from the lubricating oil fraction, such as aromatics, or converts them into effective components. At this time, most of the sulfur and nitrogen are also removed. Next, fractional distillation is carried out to obtain the required viscosity by vacuum distillation. Thereafter, known solvent dewaxing is performed to bring the wax to the pour point of ordinary paraffin base oils, that is, about -15 to -10°C. After this dewaxing treatment, a further hydrogenation treatment is performed to hydrogenate most of the aromatic components into saturated components, thereby improving the thermal and chemical stability of the base oil. However, since the pour point is still high, it is not suitable as a process oil. For this purpose, a deep dewaxing process is subsequently performed.
This treatment uses a solvent dewaxing method under harsh conditions and a zeolite catalyst, and selectively decomposes paraffin (mainly normal paraffin) adsorbed in the pores of the catalyst in a hydrogen atmosphere to remove the wax content. A catalytic hydrogenation dewaxing method is applied to remove In this way, it is possible to obtain a mineral oil for rubber compounding having a pour point of -30°C or lower and a viscosity index of 85 or higher. The rubber composition blended with the mineral oil for rubber compounding of the present invention obtained in this way maintains the flexibility of rubber even when used in a low-temperature environment. It has improved properties. Therefore, the mineral oil for rubber compounding of the present invention can be widely used in the rubber industry and related fields such as the automobile, machinery, and electrical industries. Next, the present invention will be explained by examples. Comparative Examples 1 to 6 Commercially available mineral oils A (paraffinic process oil), B (naphthenic process oil), C (aroma process oil), D, E, or F having the properties shown in Table 1 Predetermined amounts of each oil (Comparative Examples 1 to 6) were blended with rubber to obtain a rubber composition. Table 2 shows the measurement results of the physical properties of the rubber composition. Examples 1 to 5 After atmospheric distillation of Kuwait crude oil, the distillate obtained by distilling under reduced pressure and the fraction obtained by deasphalting the residual oil were used as feedstock to produce dewaxed oil (first dewaxed product). It was hydrogenated under severe conditions such that the viscosity index was 100. The product obtained by the above method is fractionated,
Three types of wax-containing oils with viscosities of approximately 2.3 cst, 5.0 cst, and 10.0 cst at 100°C were obtained. Each of these three types of wax-containing oils was further subjected to solvent dewaxing treatment. The processing conditions at this stage were such that the pour point of the dewaxed oil was -15°C. Next, the dewaxed oil was further subjected to hydrogenation treatment so that the aromatic content (as determined by gel chromatography) was 1.5% by weight or less. Furthermore, the pour points of the two-stage hydrotreated oil and the dewaxed oil were -40°C (G oil: Example 1) and -40°C, respectively.
°C (H oil: Example 2), -50 °C (I oil: Example 3)
Solvent dewaxing treatment was carried out so that Table 1 shows the properties of the three types of mineral oils obtained at this time. A predetermined amount of each of the mineral oils thus obtained was blended with rubber to obtain a rubber composition. Table 2 shows the measurement results of the physical properties of the rubber composition.
【表】【table】
Claims (1)
理してなる、流動点−30℃以下、かつ粘度指数85
以上であるゴム配合用鉱油。 ２ ゴム100重量部に対して、原油からの潤滑油
留分を精製し、深脱ろう処理してなる、流動点−
30℃以下、かつ粘度指数85以上であるゴム配合用
鉱油を５〜200重量部の割合で配合してなるゴム
組成物。[Claims] 1. Lubricating oil fraction from crude oil is refined and deep dewaxed, with a pour point of -30°C or less and a viscosity index of 85.
Mineral oil for rubber compounding. 2. Pour point - 100 parts by weight of rubber is obtained by refining lubricating oil fraction from crude oil and deep dewaxing treatment.
A rubber composition comprising 5 to 200 parts by weight of mineral oil for rubber compounding having a temperature of 30°C or lower and a viscosity index of 85 or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8279683A JPS59207948A (en) | 1983-05-13 | 1983-05-13 | Mineral oil for rubber blending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8279683A JPS59207948A (en) | 1983-05-13 | 1983-05-13 | Mineral oil for rubber blending |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59207948A JPS59207948A (en) | 1984-11-26 |
| JPH055858B2 true JPH055858B2 (en) | 1993-01-25 |
Family
ID=13784363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8279683A Granted JPS59207948A (en) | 1983-05-13 | 1983-05-13 | Mineral oil for rubber blending |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59207948A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2691172B2 (en) * | 1988-08-29 | 1997-12-17 | 三井石油化学工業株式会社 | Thermoplastic elastomer composition with excellent weather resistance |
| AT401775B (en) * | 1991-12-18 | 1996-11-25 | Semperit Ag | VEHICLE TIRES |
| JP2001253983A (en) * | 2000-03-10 | 2001-09-18 | Sumitomo Rubber Ind Ltd | Rubber composition having low elastic modulus, and sealing material using the same |
| JP2005054054A (en) * | 2003-08-04 | 2005-03-03 | Kansai Electric Power Co Inc:The | Olefin-based putty |
| US20070060694A1 (en) * | 2003-10-16 | 2007-03-15 | Osamu Ogata | Plasticer and polymer composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5295758A (en) * | 1976-02-09 | 1977-08-11 | Nippon I P Rubber Kk | Oillextended rubber composition |
| JPS5876497A (en) * | 1981-11-02 | 1983-05-09 | Idemitsu Kosan Co Ltd | Refrigerator oil having excellent stability |
-
1983
- 1983-05-13 JP JP8279683A patent/JPS59207948A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5295758A (en) * | 1976-02-09 | 1977-08-11 | Nippon I P Rubber Kk | Oillextended rubber composition |
| JPS5876497A (en) * | 1981-11-02 | 1983-05-09 | Idemitsu Kosan Co Ltd | Refrigerator oil having excellent stability |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59207948A (en) | 1984-11-26 |
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