JP2012172066A - Grease composition - Google Patents
Grease composition Download PDFInfo
- Publication number
- JP2012172066A JP2012172066A JP2011035734A JP2011035734A JP2012172066A JP 2012172066 A JP2012172066 A JP 2012172066A JP 2011035734 A JP2011035734 A JP 2011035734A JP 2011035734 A JP2011035734 A JP 2011035734A JP 2012172066 A JP2012172066 A JP 2012172066A
- Authority
- JP
- Japan
- Prior art keywords
- grease composition
- thickener
- group
- cyclohexyl
- alkyl group
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M115/00—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof
- C10M115/08—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/02—Mixtures of base-materials and thickeners
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/0206—Well-defined aliphatic compounds used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
- C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
- C10M2215/1026—Ureas; Semicarbazides; Allophanates used as thickening material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6633—Grease properties or compositions, e.g. rheological properties
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
本発明は、転がり軸受、歯車、ボールネジ、直動軸受、カム又は継ぎ手等の各種機械部品の潤滑に使用できるグリース組成物に関する。 The present invention relates to a grease composition that can be used for lubricating various machine parts such as rolling bearings, gears, ball screws, linear motion bearings, cams, and joints.
近年、消費エネルギー削減の観点から、自動車を始め、各産業で使用される電気機器や機械部品は、高効率化が求められており、部品の軽量化や構造の改良など、種々の検討がなされている。特に回転体を持つ機械部品は、潤滑剤が攪拌されるため、その抵抗がエネルギーロスに繋がる。したがって、攪拌抵抗の低い潤滑剤が求められている。
例えばエンジン油やトランスミッション油では、潤滑油の攪拌抵抗を低減するために、低粘度化が提案されている(非特許文献1および2)。しかしながら、これらの対策では、油の低粘度化に起因した油膜切れを起こし、潤滑部表面の損傷が懸念される。
In recent years, from the viewpoint of reducing energy consumption, electrical equipment and machine parts used in various industries including automobiles have been required to be highly efficient, and various studies have been made such as weight reduction of parts and improvement of structure. ing. In particular, the mechanical component having a rotating body stirs the lubricant, so that its resistance leads to energy loss. Therefore, there is a demand for a lubricant with low stirring resistance.
For example, in engine oil and transmission oil, low viscosity has been proposed in order to reduce the stirring resistance of lubricating oil (Non-patent Documents 1 and 2). However, these countermeasures cause oil film breakage due to low viscosity of the oil, and there is a concern about damage to the surface of the lubrication part.
グリースは長期間、無給脂でも潤滑できることや、密封装置が単純であること、必要量が少ないこと、漏れによる汚損が少ないことなど、潤滑油と比較して優れている点があることから、回転体を持つ多くの機械部品に使用されている。しかしながら、グリースは、基油と増ちょう剤を含む半固体状の潤滑剤であるため、潤滑油と比較し、見掛け粘度が高く、攪拌抵抗が大きい。
これまで、グリースの攪拌抵抗を低減するために、潤滑油の場合と同様に、基油の動粘度をできるだけ低くすることが常套手段とされてきた。例えば特許文献1では、特定構造であるジエステル油を含有する基油を用いたグリース組成物が提案されており、実施例には40℃における動粘度が20.16mm2/sのジエステル油が記載されている。
しかし、グリースの基油の動粘度を下げると攪拌抵抗は低減するものの、潤滑油について述べたのと同様に、油膜切れが発生し、充分な寿命、例えば、はく離寿命、焼付き寿命が満足できなくなるため、使用可能な基油は限定されている。
Since grease can be lubricated without lubrication for a long period of time, the sealing device is simple, the required amount is small, and there is little fouling due to leakage. It is used in many machine parts that have a body. However, since grease is a semi-solid lubricant containing a base oil and a thickener, it has a higher apparent viscosity and a higher stirring resistance than a lubricant.
In the past, in order to reduce the agitation resistance of grease, it has been a common practice to make the kinematic viscosity of the base oil as low as possible as in the case of lubricating oil. For example, Patent Document 1 proposes a grease composition using a base oil containing a diester oil having a specific structure, and an example describes a diester oil having a kinematic viscosity at 40 ° C. of 20.16 mm 2 / s. Has been.
However, if the kinematic viscosity of the base oil of the grease is lowered, the stirring resistance is reduced. However, as described for the lubricating oil, the oil film breakage occurs, and a sufficient life such as a peeling life and a seizure life can be satisfied. The base oil that can be used is limited because it disappears.
本発明が解決しようとする課題は、攪拌抵抗を低くしたグリース組成物を提供することである。
本発明はまた、前記グリース組成物を封入した機械部品を提供することを課題とする。
The problem to be solved by the present invention is to provide a grease composition having a low stirring resistance.
Another object of the present invention is to provide a mechanical component enclosing the grease composition.
本発明者らは、上記課題に対し、適切な増ちょう剤を選定することでこれを解決した。すなわち、本発明により、以下のグリース組成物及び機械部品を提供する:
1. 増ちょう剤と、基油とを含み、前記増ちょう剤が下記式(1)で示されるジウレア化合物であり、かつグリース組成物中の前記増ちょう剤量の割合が3〜20質量%であるグリース組成物。
The present inventors solved this problem by selecting an appropriate thickener. That is, according to the present invention, the following grease composition and machine parts are provided:
1. It contains a thickener and a base oil, the thickener is a diurea compound represented by the following formula (1), and the ratio of the thickener amount in the grease composition is 3 to 20% by mass. Grease composition.
(式(1)中、R2は、ジフェニルメタン基を示す。R1及びR3は、同一でも異なっていてもよく、シクロへキシル基又は炭素数8〜22の直鎖又は分岐アルキル基を示す。式(1)中、シクロへキシル基とアルキル基の総モル数に対するシクロへキシル基のモル数の割合[{(シクロへキシル基の数)/(シクロへキシル基の数+アルキル基の数)}×100]は70〜80モル%である。)
2. 増ちょう剤が、式(1)中、アルキル基が炭素数16〜20の直鎖アルキル基であるジウレア化合物である、前記1項記載のグリース組成物。
3. 転がり軸受、歯車、ボールネジ、直動軸受、カム又は継ぎ手に使用される、前記1又は2項記載のグリース組成物。
4. 前記1〜3のいずれか1項記載のグリース組成物を封入した機械部品。
(In formula (1), R 2 represents a diphenylmethane group. R 1 and R 3 may be the same or different, and represent a cyclohexyl group or a linear or branched alkyl group having 8 to 22 carbon atoms. In the formula (1), the ratio of the number of moles of cyclohexyl group to the total number of moles of cyclohexyl group and alkyl group [{(number of cyclohexyl groups) / (number of cyclohexyl groups + alkyl group Number)} × 100] is 70 to 80 mol%.)
2. 2. The grease composition according to 1 above, wherein the thickener is a diurea compound in which the alkyl group in the formula (1) is a linear alkyl group having 16 to 20 carbon atoms.
3. 3. The grease composition according to the above 1 or 2, which is used for rolling bearings, gears, ball screws, linear motion bearings, cams or joints.
4). A machine part in which the grease composition according to any one of 1 to 3 is encapsulated.
本発明により、攪拌抵抗を低くしたグリース組成物を提供することができる。本発明のグリース組成物は、基油の動粘度を下げることなく、油膜切れの発生を抑制し、充分に長い寿命を満足できる。 According to the present invention, a grease composition having a low stirring resistance can be provided. The grease composition of the present invention can suppress the occurrence of oil film breakage without lowering the kinematic viscosity of the base oil and satisfy a sufficiently long life.
〔増ちょう剤〕
グリースの増ちょう剤としては、一般的に、長い潤滑寿命を示し、且つ汎用性のあるジウレアグリースが多く使用されている。本発明では、脂環式アミンと脂肪族アミンとを特定モル比で配合することにより製造されるジウレアグリースを選定した。かかるジウレアグリースは下記式(1)で表される:
[Thickener]
As a thickener for grease, diurea grease having a long lubrication life and general versatility is generally used. In this invention, the diurea grease manufactured by mix | blending an alicyclic amine and an aliphatic amine by specific molar ratio was selected. Such diurea grease is represented by the following formula (1):
前記増ちょう剤を使用することにより、増ちょう剤の量を低減することができる。前記増ちょう剤を基油に特定量含ませることにより、グリースの攪拌抵抗を低減することができる。具体的には、増ちょう剤の含有量は、本発明のグリース組成物の質量に対して、3〜20質量%、好ましくは5〜15質量%である。
なお、金属石けん類、ベントン、シリカゲルは、耐熱性、すなわち高温下での軸受潤滑寿命を満足するものではない。またフッ素系増ちょう剤は、耐熱性は満足するものの非常に高価であり、汎用性に欠ける。
By using the thickener, the amount of the thickener can be reduced. By adding a specific amount of the thickener to the base oil, the stirring resistance of the grease can be reduced. Specifically, the content of the thickener is 3 to 20% by mass, preferably 5 to 15% by mass, based on the mass of the grease composition of the present invention.
Metal soaps, benton, and silica gel do not satisfy heat resistance, that is, bearing lubrication life at high temperatures. Fluorine-based thickeners are very expensive, although they are satisfactory in heat resistance, and lack versatility.
〔基油〕
本発明における基油の種類や動粘度は特に限定されない。必要に応じて基油の種類や動粘度を選定することができる。ただし、転がり軸受用として使用するグリースに含ませる基油の40℃における動粘度としては、好ましくは10〜200mm2/s、より好ましくは15〜100mm2/sである。基油は、一種を単独で使用しても良く、2種以上を併用しても良い。
本発明において使用可能な基油の種類としては、大別して鉱物油、合成油がある。合成油の例としてはジエステル油、ポリオールエステルに代表されるエステル系合成油、ポリ−α−オレフィン、ポリブテンに代表される合成炭化水素油、アルキルジフェニルエーテルに代表されるエーテル系合成油、ポリプロピレングリコールに代表されるポリグリコール系合成油、シリコーン系合成油、フッ素系合成油が挙げられる。このうち、耐熱性に優れるため合成油が好ましい。合成炭化水素油及びエステル系合成油がより好ましい。これら基油を含ませると、低温での撹拌抵抗をより低くすることができる。合成炭化水素油としてはポリ−α−オレフィンが好ましい。エステル系合成油としてはペンタエリスリトールエステル、トリメチロールプロパンエステルが好ましい。
[Base oil]
The type and kinematic viscosity of the base oil in the present invention are not particularly limited. The type and kinematic viscosity of the base oil can be selected as necessary. However, the kinematic viscosity at 40 ° C. of the base oil included in the grease used for the rolling bearing is preferably 10 to 200 mm 2 / s, more preferably 15 to 100 mm 2 / s. A base oil may be used individually by 1 type, and may use 2 or more types together.
The types of base oils that can be used in the present invention are roughly classified into mineral oils and synthetic oils. Examples of synthetic oils include diester oil, ester synthetic oil typified by polyol ester, poly-α-olefin, synthetic hydrocarbon oil typified by polybutene, ether synthetic oil typified by alkyl diphenyl ether, polypropylene glycol Representative examples include polyglycol-based synthetic oils, silicone-based synthetic oils, and fluorine-based synthetic oils. Of these, synthetic oil is preferred because of its excellent heat resistance. Synthetic hydrocarbon oils and ester synthetic oils are more preferred. When these base oils are included, the stirring resistance at low temperatures can be further reduced. As the synthetic hydrocarbon oil, poly-α-olefin is preferable. As the ester synthetic oil, pentaerythritol ester and trimethylolpropane ester are preferable.
〔添加剤〕
本発明のグリース組成物は、必要に応じてあらゆる添加剤を含むことができる。例として、アミン系、フェノール系に代表される酸化防止剤、亜硝酸ソーダなどの無機不働態化剤、スルホネート系、コハク酸系、アミン系、カルボン酸塩に代表される錆止め剤、ベンゾトリアゾールに代表される金属腐食防止剤、脂肪酸、脂肪酸エステル、リン酸エステルに代表される油性剤、リン系、硫黄系、有機金属系に代表される耐摩耗剤や極圧剤、酸化金属塩や二硫化モリブデンに代表される固体潤滑剤などが挙げられる。これらの成分の使用量は、通常0.1〜20質量%程度、好ましくは0.5〜10質量%である。
〔Additive〕
The grease composition of the present invention can contain any additive as required. Examples include antioxidants typified by amines and phenols, inorganic passivating agents such as sodium nitrite, sulfonates, succinic acids, amines, rust inhibitors typified by carboxylates, and benzotriazoles. Representative metal corrosion inhibitors, fatty agents such as fatty acids, fatty acid esters and phosphate esters, antiwear and extreme pressure agents such as phosphorus, sulfur and organometallics, metal oxides and disulfides Examples thereof include solid lubricants typified by molybdenum. The usage-amount of these components is about 0.1-20 mass% normally, Preferably it is 0.5-10 mass%.
〔混和ちょう度〕
本発明のグリース組成物の混和ちょう度は、使用目的に合わせて調整されるが、好ましくは200〜440である。特に軸受用としては、軟らかすぎると漏洩してしまうことが懸念されるため、好ましくは200〜350である。
[Mixing consistency]
The penetration of the grease composition of the present invention is adjusted according to the purpose of use, but is preferably 200 to 440. In particular, for bearings, if it is too soft, there is a concern that leakage will occur.
本発明のグリース組成物は、各種機械部品に封入して用いることができる。各種機械部品としては、転がり軸受、歯車、ボールネジ、直動軸受、カム又は継ぎ手等が挙げられる。具体的には、産業機械用各種モータ、事務機器用各種モータ、自動車用各種モータ、自動車電装部品や補機部品等に使用される転がり軸受、風車やロボット、自動車などの減速機や増速機等に使用される歯車、電動パワーステアリングや工作機械等に使用されるボールネジ、産業機器や電子機器等に使用される直動軸受、カム又は継ぎ手が挙げられる。 The grease composition of the present invention can be used by being enclosed in various machine parts. Examples of various machine parts include rolling bearings, gears, ball screws, linear motion bearings, cams, and joints. Specifically, various motors for industrial machines, various motors for office equipment, various motors for automobiles, rolling bearings used for automobile electrical parts and auxiliary machine parts, reduction gears and speed increasers for windmills, robots, automobiles, etc. Gears used in the above, ball screws used in electric power steering and machine tools, linear motion bearings used in industrial equipment and electronic equipment, cams or joints.
<試験グリースの調製>
表1に示した増ちょう剤及び基油を用い、実施例及び比較例のグリース組成物を調製した。具体的には、基油中で、4,4-ジフェニルメタンジイソシアネートと所定のアミンとを反応させ、昇温、冷却した後、3本ロールミルで混練し、実施例1及び2、及び比較例1〜9のグリース組成物を得た。基油としては、JIS K2220 23.に準拠して測定した、40℃における動粘度が70.2mm2/sの合成炭化水素油であるポリ−α−オレフィン油、又は40℃における動粘度が11.6mm2/sのジエステル油であるジオクチルセバケートを用いた。増ちょう剤量は、グリース組成物の混和ちょう度(試験方法JIS K2220 7.)が300になるように調節した。
上で調製したグリース組成物を、下記の試験方法により評価した。結果を表1に示す。
<Preparation of test grease>
Using the thickener and base oil shown in Table 1, grease compositions of Examples and Comparative Examples were prepared. Specifically, 4,4-diphenylmethane diisocyanate and a predetermined amine are reacted in a base oil, heated and cooled, and then kneaded with a three-roll mill. Examples 1 and 2 and Comparative Examples 1 and 2 9 grease compositions were obtained. As the base oil, JIS K2220 23. The poly-α-olefin oil, which is a synthetic hydrocarbon oil having a kinematic viscosity at 40 ° C of 70.2 mm 2 / s, or a diester oil having a kinematic viscosity at 40 ° C of 11.6 mm 2 / s, measured according to A dioctyl sebacate was used. The amount of the thickener was adjusted so that the grease composition had a blending degree of 300 (test method JIS K2220 7.).
The grease composition prepared above was evaluated by the following test method. The results are shown in Table 1.
<試験方法>
・攪拌抵抗(レオメータ)
試験は、Anton Paar社製の粘弾性測定装置、Physica MCR301を用いて測定を行った。
所定のプレートの間に試験グリースを塗布し、所定のプレート間距離に設定した後、はみ出した余分のグリースを除去した。その後、下記に示すせん断速度にて回転させた時のせん断応力を読み取った。
試験条件を下記に示す。
せん断速度:1〜104s-1
試験温度:25℃
プレート間距離:0.2mm
プレート直径:25mm
<評価>
せん断速度1〜104s-1におけるせん断応力の平均値を算出し、測定結果とした。
2000Pa未満・・・合格
2000Pa以上・・・不合格
<Test method>
・ Agitation resistance (rheometer)
The test was performed using a viscoelasticity measuring device manufactured by Anton Paar, Physica MCR301.
The test grease was applied between the predetermined plates, and after setting the predetermined distance between the plates, the excess grease that protruded was removed. Then, the shear stress when rotating at the shear rate shown below was read.
Test conditions are shown below.
Shear rate: 1 to 10 4 s -1
Test temperature: 25 ° C
Distance between plates: 0.2mm
Plate diameter: 25mm
<Evaluation>
An average value of shear stress at a shear rate of 1 to 10 4 s −1 was calculated and used as a measurement result.
Less than 2000Pa ・ ・ ・ Pass 2000Pa or more ・ ・ ・ Fail
本発明のジウレア増ちょう剤を含有した実施例1及び2のグリース組成物は、せん断応力(=攪拌抵抗)が低く良好であるのに対し、本発明のジウレア増ちょう剤ではない比較例1〜9は、せん断応力が高かった。また比較例9は低粘度のジエステル油を基油としているが、本発明のジウレア増ちょう剤ではないため、せん断応力が高かった。 The grease compositions of Examples 1 and 2 containing the diurea thickener of the present invention have good low shear stress (= stirring resistance), while they are not the diurea thickener of the present invention. No. 9 had high shear stress. Comparative Example 9 uses a low-viscosity diester oil as the base oil, but it was not a diurea thickener according to the present invention, and thus the shear stress was high.
Claims (4)
(式(1)中、R2は、ジフェニルメタン基を示す。R1及びR3は、同一又は異なっていても良く、シクロへキシル基又は炭素数8〜22の直鎖又は分岐アルキル基を示す。式(1)中、シクロへキシル基とアルキル基の総モル数に対するシクロへキシル基のモル数の割合[{(シクロへキシル基の数)/(シクロへキシル基の数+アルキル基の数)}×100]は70〜80モル%である。) It contains a thickener and a base oil, the thickener is a diurea compound represented by the following formula (1), and the ratio of the thickener amount in the grease composition is 3 to 20% by mass. Grease composition.
(In formula (1), R 2 represents a diphenylmethane group. R 1 and R 3 may be the same or different and represent a cyclohexyl group or a linear or branched alkyl group having 8 to 22 carbon atoms. In the formula (1), the ratio of the number of moles of cyclohexyl group to the total number of moles of cyclohexyl group and alkyl group [{(number of cyclohexyl groups) / (number of cyclohexyl groups + alkyl group Number)} × 100] is 70 to 80 mol%.)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011035734A JP2012172066A (en) | 2011-02-22 | 2011-02-22 | Grease composition |
DE112012000940T DE112012000940T5 (en) | 2011-02-22 | 2012-02-22 | lubricant composition |
CN201280009920.9A CN103415603B (en) | 2011-02-22 | 2012-02-22 | Grease composition |
US13/983,665 US20130310292A1 (en) | 2011-02-22 | 2012-02-22 | Grease composition |
KR1020137020084A KR20130118936A (en) | 2011-02-22 | 2012-02-22 | Grease composition |
PCT/JP2012/054256 WO2012115141A1 (en) | 2011-02-22 | 2012-02-22 | Grease composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011035734A JP2012172066A (en) | 2011-02-22 | 2011-02-22 | Grease composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2012172066A true JP2012172066A (en) | 2012-09-10 |
Family
ID=46720917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011035734A Pending JP2012172066A (en) | 2011-02-22 | 2011-02-22 | Grease composition |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130310292A1 (en) |
JP (1) | JP2012172066A (en) |
KR (1) | KR20130118936A (en) |
CN (1) | CN103415603B (en) |
DE (1) | DE112012000940T5 (en) |
WO (1) | WO2012115141A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016089040A (en) * | 2014-11-05 | 2016-05-23 | 日本グリース株式会社 | Biodegradable grease composition for wind power generator |
KR20190022869A (en) | 2016-07-26 | 2019-03-06 | 교도유시 가부시끼가이샤 | Grease composition |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009270058A (en) * | 2008-05-09 | 2009-11-19 | Kyodo Yushi Co Ltd | Grease composition for constant-velocity joint and constant-velocity joint |
JP6268642B2 (en) | 2014-03-12 | 2018-01-31 | 協同油脂株式会社 | Grease composition and grease bearing wheel bearing |
CN107207993B (en) | 2015-02-05 | 2020-05-19 | 出光兴产株式会社 | Grease and method for producing grease |
JP6750215B2 (en) * | 2015-12-17 | 2020-09-02 | 日本精工株式会社 | Telescopic shaft for vehicle steering shaft and electric power steering device |
WO2017171020A1 (en) * | 2016-03-31 | 2017-10-05 | 出光興産株式会社 | Lubricating oil composition, and precision reduction gear using same |
JP2018065971A (en) * | 2016-10-21 | 2018-04-26 | 株式会社ジェイテクト | A grease composition and a roller bearing filled with grease composition |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0617079A (en) * | 1992-06-29 | 1994-01-25 | Nippon Seiko Kk | Grease composition for high-speed rolling bearing |
JP2008286230A (en) * | 2007-05-15 | 2008-11-27 | Nsk Ltd | Rolling bearing for motor |
JP2009108263A (en) * | 2007-10-31 | 2009-05-21 | Nsk Ltd | Grease composition and rolling bearing |
JP2009132754A (en) * | 2007-11-28 | 2009-06-18 | Cosmo Sekiyu Lubricants Kk | Grease composition |
JP2009197162A (en) * | 2008-02-22 | 2009-09-03 | Kyodo Yushi Co Ltd | Grease composition and bearing |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5330773B2 (en) * | 2008-07-07 | 2013-10-30 | 昭和シェル石油株式会社 | Grease composition for resin lubrication |
-
2011
- 2011-02-22 JP JP2011035734A patent/JP2012172066A/en active Pending
-
2012
- 2012-02-22 DE DE112012000940T patent/DE112012000940T5/en not_active Ceased
- 2012-02-22 KR KR1020137020084A patent/KR20130118936A/en not_active Application Discontinuation
- 2012-02-22 CN CN201280009920.9A patent/CN103415603B/en active Active
- 2012-02-22 US US13/983,665 patent/US20130310292A1/en not_active Abandoned
- 2012-02-22 WO PCT/JP2012/054256 patent/WO2012115141A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0617079A (en) * | 1992-06-29 | 1994-01-25 | Nippon Seiko Kk | Grease composition for high-speed rolling bearing |
JP2008286230A (en) * | 2007-05-15 | 2008-11-27 | Nsk Ltd | Rolling bearing for motor |
JP2009108263A (en) * | 2007-10-31 | 2009-05-21 | Nsk Ltd | Grease composition and rolling bearing |
JP2009132754A (en) * | 2007-11-28 | 2009-06-18 | Cosmo Sekiyu Lubricants Kk | Grease composition |
JP2009197162A (en) * | 2008-02-22 | 2009-09-03 | Kyodo Yushi Co Ltd | Grease composition and bearing |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016089040A (en) * | 2014-11-05 | 2016-05-23 | 日本グリース株式会社 | Biodegradable grease composition for wind power generator |
KR20190022869A (en) | 2016-07-26 | 2019-03-06 | 교도유시 가부시끼가이샤 | Grease composition |
KR20200115672A (en) | 2016-07-26 | 2020-10-07 | 교도유시 가부시끼가이샤 | Grease composition |
US11155766B2 (en) | 2016-07-26 | 2021-10-26 | Kyodo Yushi Co., Ltd. | Grease composition |
KR20220110604A (en) | 2016-07-26 | 2022-08-08 | 교도유시 가부시끼가이샤 | Grease composition |
Also Published As
Publication number | Publication date |
---|---|
CN103415603B (en) | 2017-04-26 |
KR20130118936A (en) | 2013-10-30 |
DE112012000940T5 (en) | 2013-11-21 |
US20130310292A1 (en) | 2013-11-21 |
WO2012115141A1 (en) | 2012-08-30 |
CN103415603A (en) | 2013-11-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6795251B2 (en) | Grease composition for bearings | |
WO2012115141A1 (en) | Grease composition | |
EP1930400B1 (en) | Lubricant composition | |
JP6072532B2 (en) | Grease composition | |
JP2008239706A (en) | Grease composition and bearing | |
JP5738712B2 (en) | Grease composition | |
JP5467727B2 (en) | Grease composition and bearing | |
WO2010079743A1 (en) | Lubricant composition and lubricating liquid composition | |
EP2738242A1 (en) | Grease composition for ev/hev driving motor bearing and ev/hev driving motor bearing | |
KR20150064201A (en) | Grease composition for hub unit bearing | |
JP5087989B2 (en) | Lubricant composition, method for producing the same, and rolling bearing | |
JP5766425B2 (en) | Grease composition | |
JP2008222739A (en) | Grease composition and machinery member | |
JP6193619B2 (en) | Rolling bearing | |
DE112018004265T5 (en) | LUBRICATING GREASE COMPOSITION | |
EP3178910B1 (en) | Grease composition | |
JP2013253257A (en) | Grease composition and bearing | |
JP2008285575A (en) | Lubricant composition and rolling bearing for swinging motion | |
JP5753993B2 (en) | Grease composition and bearing | |
JP2006316082A (en) | Grease composition and grease-sealed rolling bearing | |
JP2008285574A (en) | Roller bearing | |
JP2006242331A (en) | Robot rolling bearing | |
JP2006077205A (en) | Grease composition for direct-acting device and direct-acting device | |
WO2023182533A1 (en) | Grease composition | |
JP2016020481A (en) | Grease composition |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20131211 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140929 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20141128 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20150525 |