JP2005213289A - Grease composition and bearing - Google Patents
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本発明はグリース組成物及び軸受に関し、更に詳細には製鉄設備軸受用、特に連続鋳造設備軸受用として好適なグリース組成物及びこれを封入した軸受に関する。本発明は、特に防錆性に優れたグリース組成物及び軸受に関する。 The present invention relates to a grease composition and a bearing, and more particularly to a grease composition suitable for a steelmaking equipment bearing, particularly a continuous casting equipment bearing, and a bearing in which the grease composition is enclosed. The present invention relates to a grease composition and a bearing particularly excellent in rust prevention.
機械のグリース潤滑において、製鉄所の連続鋳造設備軸受や圧延機軸受のように水がかかり、グリース中に水分が混入して軸受に錆が発生する場合がかなりある。
上記のような条件下で使用されるグリースとして、高粘度精製鉱油を基油としたウレアグリースに有機系の防錆剤を添加したものが知られている（例えば、特許文献１〜３参照）。この場合、有機系の防錆剤が金属表面に吸着して水と酸素が金属に直接接触するのを防ぐことにより錆の発生を防止している。
しかしながら、連続鋳造設備のような腐食性のイオンを含む水が多量にグリース中に混入し、長期間軸受が放置される場合には、従来のグリースでは軸受の錆発生を抑えることができず、錆による軸受廃却率は大きな割合を占めている。
In the grease lubrication of machines, water is splashed like continuous casting equipment bearings and rolling mill bearings in steelworks, and there are quite a few cases where moisture is mixed into the grease and the bearings are rusted.
As grease used under the above conditions, a grease obtained by adding an organic rust preventive agent to urea grease based on high-viscosity refined mineral oil is known (for example, see Patent Documents 1 to 3). . In this case, the generation of rust is prevented by preventing the organic rust inhibitor from adsorbing on the metal surface and preventing water and oxygen from coming into direct contact with the metal.
However, when a large amount of water containing corrosive ions such as continuous casting equipment is mixed in the grease and the bearing is left for a long period of time, the conventional grease cannot suppress the occurrence of rust on the bearing. Bearing rejection due to rust accounts for a large percentage.
従って、本発明の目的は、腐食性のイオンを含む水が多量に混入するような環境においても優れた防錆性を発揮するグリース組成物を提供することである。
本発明の他の目的は、このようなグリース組成物を封入した防錆性に優れた軸受を提供することである。
Accordingly, an object of the present invention is to provide a grease composition that exhibits excellent rust prevention even in an environment where a large amount of water containing corrosive ions is mixed.
Another object of the present invention is to provide a bearing excellent in rust prevention property in which such a grease composition is enclosed.
本発明は、下記の成分を含有するグリース組成物及び軸受を提供するものである。
１．下記の成分を含有するグリース組成物。
(a) 基油、
(b) 次式(1)で表されるジウレア系増ちょう剤、
(1) R1NH-CO-NH-C6H4-CH2-C6H4-NH-CO-NHR2
(式中、R1及びR2 は同一もしくは異なる、炭素原子数6〜30のアルキル基、炭素原子数6又は7のアリール基もしくはシクロヘキシル基である)
(c) 金属スルホネート、
(d) コハク酸及びコハク酸誘導体からなる群から選ばれる少なくとも１種の化合物、
(e) ナフテン酸塩、及び
(f) 界面活性剤。
２．金属スルホネートの含有量が０．１〜５質量％である上記１記載のグリース組成物。
３．コハク酸及びコハク酸誘導体からなる群から選ばれる少なくとも１種の化合物の含有量が０．１〜５質量％である上記１又は２記載のグリース組成物。
４．ナフテン酸塩の含有量が０．１〜５質量％である上記１〜３のいずれか１項記載のグリース組成物。
５．界面活性剤の含有量が０．１〜５質量％である上記１〜４のいずれか１項記載のグリース組成物。
６．R1及びR2が、炭素原子数6〜30のアルキル基及び／又は炭素原子数6又は7のアリール基であり、金属スルホネートの含有量が０．１〜５質量％であり、コハク酸及びコハク酸誘導体からなる群から選ばれる少なくとも１種の化合物の含有量が０．１〜５質量％であり、ナフテン酸塩の含有量が０．１〜５質量％であり、界面活性剤の含有量が０．１〜５質量％である上記１〜５のいずれか１項記載のグリース組成物。
７．上記１〜６のいずれか１項記載のグリース組成物を封入してなる軸受。
８．製鉄設備軸受である上記７記載の軸受。
９．連続鋳造設備軸受である上記７記載の軸受。
The present invention provides a grease composition and a bearing containing the following components.
1. A grease composition containing the following components.
(a) base oil,
(b) a diurea thickener represented by the following formula (1):
(1) R 1 NH-CO-NH-C 6 H 4 -CH 2 -C 6 H 4 -NH-CO-NHR 2
(Wherein R 1 and R 2 are the same or different, an alkyl group having 6 to 30 carbon atoms, an aryl group having 6 or 7 carbon atoms, or a cyclohexyl group)
(c) metal sulfonate,
(d) at least one compound selected from the group consisting of succinic acid and succinic acid derivatives,
(e) naphthenates, and
(f) Surfactant.
2. 2. The grease composition according to 1 above, wherein the content of the metal sulfonate is 0.1 to 5% by mass.
3. 3. The grease composition according to 1 or 2 above, wherein the content of at least one compound selected from the group consisting of succinic acid and succinic acid derivatives is 0.1 to 5% by mass.
4). 4. The grease composition according to any one of 1 to 3 above, wherein the naphthenate content is 0.1 to 5% by mass.
5). 5. The grease composition according to any one of 1 to 4 above, wherein the surfactant content is 0.1 to 5% by mass.
6). R 1 and R 2 are an alkyl group having 6 to 30 carbon atoms and / or an aryl group having 6 or 7 carbon atoms, the metal sulfonate content is 0.1 to 5% by mass, succinic acid and The content of at least one compound selected from the group consisting of succinic acid derivatives is 0.1 to 5% by mass, the content of naphthenic acid salt is 0.1 to 5% by mass, and the surfactant is contained 6. The grease composition according to any one of 1 to 5 above, wherein the amount is 0.1 to 5% by mass.
7). A bearing comprising the grease composition according to any one of 1 to 6 above.
8). 8. The bearing according to 7 above, which is a steelmaking equipment bearing.
9. 8. The bearing according to 7 above, which is a continuous casting equipment bearing.
本発明のグリース組成物は、特定のジウレア系増ちょう剤を使用し、金属スルホネート、コハク酸及び／又はコハク酸誘導体、ナフテン酸塩、及び界面活性剤を含んでいるため、防錆性に優れており、特に、製鉄所の連続鋳造設備軸受や圧延機軸受のように水がかかり、グリース中に水分が混入して錆が発生しやすい軸受用のグリースとして好適である。 The grease composition of the present invention uses a specific diurea thickener, and includes a metal sulfonate, succinic acid and / or a succinic acid derivative, a naphthenic acid salt, and a surfactant. In particular, it is suitable as a grease for a bearing that is splashed with water like a continuous casting equipment bearing or a rolling mill bearing in an ironworks, and in which moisture is mixed into the grease and rust is likely to occur.
本発明に使用する成分(a)の基油としては、鉱物油、エステル系合成油、エーテル系合成油、合成炭化水素油等が挙げられる。これらは単独でも2種以上を混合して使用してもよい。
本発明に使用する成分(b)のジウレア系増ちょう剤は次式(1)で表されるものである。
(1) R1NH-CO-NH-C6H4-CH2-C6H4-NH-CO-NHR2
式中、R1及びR2 は同一もしくは異なる、炭素原子数6〜30のアルキル基、炭素原子数6又は7のアリール基もしくはシクロヘキシル基である。
このようなジウレア系増ちょう剤は、オクチルアミン、ステアリルアミン、ドデシルアミン、ヘキサデシルアミン等のアルキルモノアミン、アニリン、ｐ−トルイジン等のアリールモノアミン、シクロヘキシルアミン等のモノアミンとジフェニルメタン−４，４'−ジイソシアネートとの反応によって得られる。特に好ましい増ちょう剤は、R1及びR2が、炭素原子数6〜30のアルキル基及び／又は炭素原子数6又は7のアリール基である式(1)のジウレア系化合物である。
成分(b)のジウレア系増ちょう剤のグリース組成物中の含有量は、好ましくは２〜20質量％、さらに好ましくは３〜15質量％である。
Examples of the base oil of component (a) used in the present invention include mineral oil, ester-based synthetic oil, ether-based synthetic oil, and synthetic hydrocarbon oil. These may be used alone or in admixture of two or more.
The diurea thickener of component (b) used in the present invention is represented by the following formula (1).
(1) R 1 NH-CO-NH-C 6 H 4 -CH 2 -C 6 H 4 -NH-CO-NHR 2
In the formula, R 1 and R 2 are the same or different, an alkyl group having 6 to 30 carbon atoms, an aryl group having 6 or 7 carbon atoms, or a cyclohexyl group.
Such diurea thickeners include alkyl monoamines such as octylamine, stearylamine, dodecylamine and hexadecylamine, arylmonoamines such as aniline and p-toluidine, monoamines such as cyclohexylamine and diphenylmethane-4,4′-. Obtained by reaction with diisocyanate. Particularly preferred thickeners are diurea compounds of the formula (1) in which R 1 and R 2 are an alkyl group having 6 to 30 carbon atoms and / or an aryl group having 6 or 7 carbon atoms.
The content of the diurea thickener in component (b) in the grease composition is preferably 2 to 20% by mass, more preferably 3 to 15% by mass.
本発明に使用する成分(c)の金属スルホネートは、エンジン油等の潤滑油に用いられる金属系清浄分散剤や防錆剤として知られている。金属スルホネートとしては、ジノニルナフタレンスルホン酸やアルキルベンゼンスルホン酸のようなアルキル芳香族スルホン酸などの金属塩が挙げられる。金属塩としては、例えば、カルシウム塩、バリウム塩、亜鉛塩、マグネシウム塩、ナトリウム塩等が挙げられる。特に、カルシウム塩、バリウム塩、亜鉛塩の効果が高い。
成分(c)の金属スルホネートのグリース組成物中の含有量は、好ましくは０．１〜５質量％、さらに好ましくは０．５〜２．５質量％である。
The metal sulfonate of component (c) used in the present invention is known as a metal-based detergent / dispersant and rust inhibitor used in lubricating oils such as engine oils. Examples of the metal sulfonate include metal salts such as alkyl aromatic sulfonic acids such as dinonylnaphthalene sulfonic acid and alkylbenzene sulfonic acid. Examples of the metal salt include calcium salt, barium salt, zinc salt, magnesium salt, sodium salt and the like. In particular, the effects of calcium salt, barium salt, and zinc salt are high.
The content of the metal sulfonate component (c) in the grease composition is preferably 0.1 to 5% by mass, more preferably 0.5 to 2.5% by mass.
本発明に使用する成分(d)のコハク酸及びコハク酸誘導体は、グリースの防錆剤として知られており、コハク酸誘導体としては、アルキルコハク酸、アルケニルコハク酸、アルキルコハク酸ハーフエステル、アルケニルコハク酸ハーフエステル等が挙げられる。アルキル基としては炭素原子数４〜３０のものが、アルケニル基としては炭素原子数４〜３０のものが、また、ハーフエステルのアルコール部分としては炭素原子数２〜２０のものが挙げられる。特に好ましいものは、アルケニルコハク酸ハーフエステルである。
成分(d)のコハク酸及びコハク酸誘導体のグリース組成物中の含有量は、好ましくは０．１〜５質量％、さらに好ましくは１〜３質量％である。
The succinic acid and succinic acid derivative of the component (d) used in the present invention are known as anticorrosive agents for grease, and as the succinic acid derivative, alkyl succinic acid, alkenyl succinic acid, alkyl succinic acid half ester, alkenyl And succinic acid half ester. Examples of the alkyl group include those having 4 to 30 carbon atoms, examples of the alkenyl group include those having 4 to 30 carbon atoms, and examples of the alcohol moiety of the half ester include those having 2 to 20 carbon atoms. Particularly preferred are alkenyl succinic acid half esters.
The content of the succinic acid and succinic acid derivative of component (d) in the grease composition is preferably 0.1 to 5% by mass, more preferably 1 to 3% by mass.
本発明に使用する成分(e)のナフテン酸塩はグリースの防錆剤として知られており、ナフテン核を有する飽和カルボン酸であればよい。塩としては、亜鉛塩、カルシウム塩、バリウム塩、マグネシウム塩、アルミニウム塩、コバルト塩、マンガン塩、リチウム塩、銅塩、ジルコニウム塩等が挙げられるが、好ましくは亜鉛塩、カルシウム塩、バリウム塩であり、最も好ましくは亜鉛塩である。
成分(e)のナフテン酸塩のグリース組成物中の含有量は、好ましくは０．１〜５質量％、さらに好ましくは１〜３質量％である。
The naphthenate salt of component (e) used in the present invention is known as a rust preventive agent for grease, and may be any saturated carboxylic acid having a naphthene nucleus. Examples of the salt include zinc salt, calcium salt, barium salt, magnesium salt, aluminum salt, cobalt salt, manganese salt, lithium salt, copper salt, zirconium salt, etc., preferably zinc salt, calcium salt and barium salt. And most preferred is a zinc salt.
The content of the naphthenic acid salt of component (e) in the grease composition is preferably 0.1 to 5% by mass, more preferably 1 to 3% by mass.
本発明に使用する成分(f)の界面活性剤は、水がグリース中に混入した場合に、これを速やかにグリース中に微細粒子として取り込み、その結果、水と金属が直接接触するのを防止し、良好な防錆性を発揮すると考えられる。界面活性剤としては、アニオン系界面活性剤、カチオン系界面活性剤、両性界面活性剤等のイオン系界面活性剤及びノニオン系界面活性剤のすべてが使用可能であるが、ノニオン系界面活性剤が特に好ましい。ノニオン系界面活性剤の例としては、ソルビタンエステル、ソルビタントリエステルエーテル等が挙げられる。
成分(e)の界面活性剤のグリース組成物中の含有量は、好ましくは０．１〜５質量％、さらに好ましくは０．５〜２質量％である。
The surfactant of component (f) used in the present invention, when water is mixed in the grease, quickly incorporates it as fine particles in the grease, thereby preventing direct contact between water and metal. It is thought that good rust prevention is exhibited. As surfactants, all of ionic surfactants such as anionic surfactants, cationic surfactants, amphoteric surfactants and nonionic surfactants can be used. Particularly preferred. Examples of nonionic surfactants include sorbitan esters and sorbitan triester ethers.
The content of the component (e) surfactant in the grease composition is preferably 0.1 to 5% by mass, more preferably 0.5 to 2% by mass.
本発明において、R1及びR2が同一もしくは異なる、炭素原子数6〜30のアルキル基及び／又は炭素原子数6又は7のアリール基であり、金属スルホネートの含有量が０．１〜５質量％であり、コハク酸及びコハク酸誘導体からなる群から選ばれる少なくとも１種の化合物の含有量が０．１〜５質量％であり、ナフテン酸塩の含有量が０．１〜５質量％であり、界面活性剤の含有量が０．１〜５質量％であるものが特に好ましい。
(b)成分、(c)成分、(d)成分、(e)成分、(f)成分の含有量が０．１質量％未満では目的とする効果の発現が不十分な場合があり、一方、５質量％より多くなると潤滑剤組成物が軟化し、かつ効果の増大はなく、経済性に欠ける。
In the present invention, R 1 and R 2 are the same or different and are an alkyl group having 6 to 30 carbon atoms and / or an aryl group having 6 or 7 carbon atoms, and the content of metal sulfonate is 0.1 to 5 mass. The content of at least one compound selected from the group consisting of succinic acid and succinic acid derivatives is 0.1 to 5% by mass, and the content of naphthenic acid salt is 0.1 to 5% by mass. In particular, those having a surfactant content of 0.1 to 5% by mass are particularly preferred.
If the content of component (b), component (c), component (d), component (e), component (f) is less than 0.1% by mass, the desired effect may not be fully achieved. If it exceeds 5% by mass, the lubricant composition is softened, the effect is not increased, and the economy is lacking.
本発明のグリース組成物には、グリース組成物に普通に使用される他の添加剤、例えば、酸化防止剤、金属不活性化剤、極圧剤、摩擦緩和剤等を含有させてもよい。 The grease composition of the present invention may contain other additives commonly used in grease compositions, such as antioxidants, metal deactivators, extreme pressure agents, friction modifiers, and the like.
次に本発明を実施例および比較例により説明する。
(1) 実施例１〜８および比較例１〜１１のグリース
容器に基油１３１６ｇとジフェニルメタン−４，４'−ジイソシアネート１３８ｇをとり、混合物を７０〜８０℃に加熱した。別容器に基油１４００ｇとオクチルアミン１４６ｇ及びアニリン２０ｇをとり、７０〜８０℃に加熱後、先の容器に加えた。混合物をよく攪拌しながら、１８０℃まで昇温し、放冷し、ベースウレアグリースを得た。このベースウレアグリースに適宜基油を加え得られた混合物を三段ロールミルにてちょう度３３０に調整し、グリースＡを得た。グリースＡに表１及び２に示す配合で添加剤を添加し適宜基油を加え、得られた混合物を三段ロールミルにてちょう度３５０に調整した。
上記実施例及び比較例において、いずれもグリースの基油しては、以下の特性を有する鉱油を使用した。
粘度 ４０℃ ４３６．２ｍｍ2／ｓ
１００℃ ３１．４ｍｍ2／ｓ
比較例１１は、市販の製鉄設備軸受用グリース（コハク酸誘導体を含有する）である。
Next, the present invention will be described with reference to examples and comparative examples.
(1) Grease of Examples 1 to 8 and Comparative Examples 1 to 11 Into a container, 1316 g of base oil and 138 g of diphenylmethane-4,4′-diisocyanate were taken, and the mixture was heated to 70 to 80 ° C. In a separate container, 1400 g of base oil, 146 g of octylamine and 20 g of aniline were taken, heated to 70-80 ° C. and added to the previous container. While thoroughly stirring the mixture, the temperature was raised to 180 ° C. and allowed to cool to obtain a base urea grease. A base oil was appropriately added to this base urea grease, and the resulting mixture was adjusted to a consistency of 330 with a three-stage roll mill to obtain grease A. Additives were added to grease A in the formulations shown in Tables 1 and 2 and base oil was added as appropriate, and the resulting mixture was adjusted to a consistency of 350 using a three-stage roll mill.
In the above Examples and Comparative Examples, mineral oil having the following characteristics was used as the base oil for grease.
Viscosity 40 ° C 436.2 mm 2 / s
100 ° C 31.4mm 2 / s
Comparative Example 11 is a commercially available grease for bearings for iron making equipment (containing a succinic acid derivative).
（２）防錆性試験の試験法
１．軸受防錆試験
ＡＳＴＭ Ｄ １７４３ の軸受防錆試験方法に用いる装置を使用して、グリース中に腐食水を３０％含ませたものを試料として、軸受１０００ｋｇｆ・ｃｍのトルクをかけ、温度８０℃で４８時間放置後、軸受の発錆状態を観察し、以下の基準により評価した。
＃１：外輪レース面に発錆全くなし
＃２：外輪レース面に小錆３点以内
＃３：外輪レース面に小錆４点以上
(2) Test method for rust prevention test 1. Bearing anticorrosion test Using the equipment used in the bearing antirust test method of ASTM D 1743, with a sample containing 30% corrosive water in grease, apply a torque of 1000 kgf · cm at a bearing temperature of 80 ° C. After standing for 48 hours, the rusting state of the bearing was observed and evaluated according to the following criteria.
# 1: No rust on outer race surface # 2: Less than 3 rust on outer race surface # 3: More than 4 rust on outer race surface
２．Ｅｍｃｏｒ
ＩＰ２２０に準じて、規定の自動調心玉軸受（１３０６Ｋ）にグリース１０ｇを充填する。回転数８００ｒｐｍで３０分間のならし運転後、２０ｍｌの腐食水を入れ、８０ｒｐｍで８時間運転、１６時間停止の操作を２回繰り返す。さらに８時間運転後１０８時間放置し、発錆状態を観察し、以下の基準により評価した。
０：発錆なし
１：発錆が３点以内
２：発錆が表面の１％未満
３：発錆が表面の１％〜５％未満
４：発錆が表面の５％〜１０％未満
５：発錆が表面の１０％以上
2. Emcor
In accordance with IP220, a specified self-aligning ball bearing (1306K) is filled with 10 g of grease. After a break-in operation for 30 minutes at a rotation speed of 800 rpm, 20 ml of corrosive water is added, and the operation of operation at 80 rpm for 8 hours and stop for 16 hours is repeated twice. Furthermore, it was left to stand for 108 hours after the operation for 8 hours, and the rusting state was observed and evaluated according to the following criteria.
0: No rusting 1: Less than 3 points of rusting 2: Rusting is less than 1% of the surface 3: Rusting is less than 1% to less than 5% of the surface 4: Rusting is less than 5% to less than 10% of the surface 5 : Rust is 10% or more of the surface
ここで用いる腐食水は下記イオンを含むものであり、各イオン濃度は製鉄所の工業用水の平均的なイオン濃度である。
Cl-:150ppm、SO4 2-:150ppm、HCO3 -:150ppm、Na+:225ppm、F-:40ppm
結果を以下の表１及び表２に示す。表中の各成分の数値は質量％である。
The corrosive water used here contains the following ions, and each ion concentration is an average ion concentration of industrial water in the steelworks.
Cl -: 150ppm, SO 4 2- : 150ppm, HCO 3 -: 150ppm, Na +: 225ppm, F -: 40ppm
The results are shown in Tables 1 and 2 below. The numerical value of each component in a table | surface is the mass%.
コハク酸誘導体：アルケニルコハク酸ハーフエステル（チバスペシャリティーケミカルズ社製 IRGACOR L12)
界面活性剤：ノニオン系界面活性剤
Succinic acid derivative: Alkenyl succinic acid half ester (IRGACOR L12 manufactured by Ciba Specialty Chemicals)
Surfactant: Nonionic surfactant
本発明の成分(a)〜(f)を含む実施例１〜８のグリース組成物はいずれも、優れた防錆性を発揮することがわかる。
これに対して成分(c)の金属スルホネートを含まない比較例１のグリース組成物、成分(d)のコハク酸誘導体を含まない比較例２〜４のグリース組成物、成分(e)のナフテン酸塩を含まない比較例５のグリース組成物、成分(f)の界面活性剤を含まない比較例６のグリース組成物は、防錆性が劣り、実用的ではない。
また、成分(c)〜(f)の２種以上を含まない比較例７〜１０のグリース組成物及び比較例１１の市販グリースの防錆性も劣っている。
It can be seen that all of the grease compositions of Examples 1 to 8 containing the components (a) to (f) of the present invention exhibit excellent antirust properties.
In contrast, the grease composition of Comparative Example 1 that does not contain the metal sulfonate of component (c), the grease composition of Comparative Examples 2 to 4 that does not contain the succinic acid derivative of component (d), and the naphthenic acid of component (e) The grease composition of Comparative Example 5 containing no salt and the grease composition of Comparative Example 6 containing no component (f) surfactant are inferior in rust prevention and are not practical.
In addition, the grease compositions of Comparative Examples 7 to 10 that do not contain two or more of components (c) to (f) and the commercially available grease of Comparative Example 11 are also inferior in rust resistance.
Claims (9)
(a) 基油、
(b) 次式(1)で表されるジウレア系増ちょう剤、
(1) R1NH-CO-NH-C6H4-CH2-C6H4-NH-CO-NHR2
(式中、R1及びR2 は同一もしくは異なる、炭素原子数6〜30のアルキル基、炭素原子数6又は7のアリール基もしくはシクロヘキシル基である)
(c) 金属スルホネート、
(d) コハク酸及びコハク酸誘導体からなる群から選ばれる少なくとも１種の化合物、
(e) ナフテン酸塩、及び
(f) 界面活性剤。 A grease composition containing the following components.
(a) base oil,
(b) a diurea thickener represented by the following formula (1):
(1) R 1 NH-CO-NH-C 6 H 4 -CH 2 -C 6 H 4 -NH-CO-NHR 2
(Wherein R 1 and R 2 are the same or different, an alkyl group having 6 to 30 carbon atoms, an aryl group having 6 or 7 carbon atoms, or a cyclohexyl group)
(c) metal sulfonate,
(d) at least one compound selected from the group consisting of succinic acid and succinic acid derivatives,
(e) naphthenates, and
(f) Surfactant.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008050834A1 (en) * | 2006-10-26 | 2008-05-02 | Kyodo Yushi Co., Ltd. | Grease composition and bearing |
| CN102041149A (en) * | 2011-01-13 | 2011-05-04 | 上海锦海特种润滑油厂 | Thin-layer antirust oil and preparation method thereof |
| JP2012012441A (en) * | 2010-06-29 | 2012-01-19 | Nippon Grease Kk | Grease composition, and bearing enclosing the same |
| JP2017128702A (en) * | 2016-01-22 | 2017-07-27 | 昭和シェル石油株式会社 | Grease composition |
| WO2018006275A1 (en) * | 2016-07-05 | 2018-01-11 | 深圳市恒兆智科技有限公司 | Corrosion inhibitor, and metal workpiece and anti-corrosion treatment method thereof |
| WO2018012639A1 (en) * | 2016-07-15 | 2018-01-18 | 協同油脂株式会社 | Flame retardant grease composition |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008050834A1 (en) * | 2006-10-26 | 2008-05-02 | Kyodo Yushi Co., Ltd. | Grease composition and bearing |
| JP2009185084A (en) * | 2006-10-26 | 2009-08-20 | Kyodo Yushi Co Ltd | Grease composition and bearing |
| TWI408223B (en) * | 2006-10-26 | 2013-09-11 | Kyodo Yushi | Grease composition and bearing |
| JP2012012441A (en) * | 2010-06-29 | 2012-01-19 | Nippon Grease Kk | Grease composition, and bearing enclosing the same |
| CN102041149A (en) * | 2011-01-13 | 2011-05-04 | 上海锦海特种润滑油厂 | Thin-layer antirust oil and preparation method thereof |
| JP2017128702A (en) * | 2016-01-22 | 2017-07-27 | 昭和シェル石油株式会社 | Grease composition |
| CN108473909A (en) * | 2016-01-22 | 2018-08-31 | 国际壳牌研究有限公司 | Lubricant composition |
| WO2018006275A1 (en) * | 2016-07-05 | 2018-01-11 | 深圳市恒兆智科技有限公司 | Corrosion inhibitor, and metal workpiece and anti-corrosion treatment method thereof |
| WO2018012639A1 (en) * | 2016-07-15 | 2018-01-18 | 協同油脂株式会社 | Flame retardant grease composition |
| CN109415653A (en) * | 2016-07-15 | 2019-03-01 | 协同油脂株式会社 | Anti-flammability lubricant composition |
| CN109415653B (en) * | 2016-07-15 | 2021-10-15 | 协同油脂株式会社 | Flame-retardant grease composition |
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