WO2015041227A1 - グリース - Google Patents
グリース Download PDFInfo
- Publication number
- WO2015041227A1 WO2015041227A1 PCT/JP2014/074499 JP2014074499W WO2015041227A1 WO 2015041227 A1 WO2015041227 A1 WO 2015041227A1 JP 2014074499 W JP2014074499 W JP 2014074499W WO 2015041227 A1 WO2015041227 A1 WO 2015041227A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- grease
- mass
- inorganic acid
- fluorine
- tungstate
- Prior art date
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
- 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
- C10M169/04—Mixtures of base-materials and additives
-
- 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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/38—Lubricating compositions characterised by the base-material being a macromolecular compound containing halogen
-
- 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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/10—Metal oxides, hydroxides, carbonates or bicarbonates
-
- 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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/24—Compounds containing phosphorus, arsenic or antimony
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/085—Phosphorus oxides, acids or salts
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/087—Boron oxides, acids or salts
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
-
- 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
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/003—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions 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
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/04—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen, halogen, and oxygen
- C10M2211/0406—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen, halogen, and oxygen 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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/003—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions 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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
-
- 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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/0606—Perfluoro polymers used as base 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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/02—Groups 1 or 11
-
- 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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
-
- 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
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- 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
- C10N2030/08—Resistance to extreme temperature
-
- 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
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- 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
- C10N2030/64—Environmental friendly compositions
-
- 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
Definitions
- the present invention relates to a grease using a fluorinated synthetic oil as a base oil.
- Patent Document 1 describes that according to this fluorine-based grease, it is possible to provide a fluorine-based grease that is excellent in wear resistance, leakage resistance, cleanability, and the like, and that is satisfactory in terms of cost.
- Patent Document 2 describes that a fluorine-based grease excellent in evaporation characteristics and rust prevention properties can be provided.
- An object of the present invention is to provide a fluorine-based grease that has rust resistance, is excellent in wear resistance, and has a low environmental load.
- the present invention provides the following grease.
- a grease based on a fluorinated synthetic oil characterized by comprising one or more inorganic acid salts selected from phosphates, tungstates, sulfates and sulfites.
- the inorganic acid salt is an alkali metal salt.
- the grease described above, wherein the phosphate is at least one of orthophosphate, hydrogen phosphate, polyphosphate, phosphite, and metaphosphate.
- a grease using a fluorine-based synthetic oil as a base oil comprising an inorganic acid salt, wherein the inorganic acid salt is a phosphate and a tungstate.
- the grease described above, wherein the phosphate is at least one of hydrogen phosphate, pyrophosphate, tripolyphosphate, and tetrapolyphosphate.
- the grease described above, wherein the inorganic acid salt is a sodium salt.
- the grease described above, wherein the amount of the inorganic acid salt is 0.5% by mass or more and 15% by mass or less based on the total amount of grease.
- the grease described above, wherein the fluorine-based synthetic oil is a perfluoroalkyl polyether oil.
- the grease of the present invention (hereinafter also referred to as “the present grease”) is a grease based on a fluorine-based synthetic oil, and is one or more selected from phosphates, tungstates, sulfates and sulfites. It is characterized by comprising an inorganic acid salt. Details will be described below.
- This grease is a so-called fluorine-based grease
- the fluorine-based synthetic oil used as the base oil is not limited as long as it is a fluorine-based synthetic oil that contains fluorine in its molecule and can be used as a lubricating oil.
- perfluoroalkyl polyether oil which is inert and has a low vapor pressure can be preferably applied as a base oil.
- the perfluoroalkyl polyether oil preferably has a kinematic viscosity at 40 ° C.
- the ratio of the base oil in this grease is preferably 50% by mass or more and 98% by mass or less, and more preferably 65% by mass or more and 85% by mass or less based on the total amount of grease.
- any solid can be used as long as it can be dispersed in a fluorine-based synthetic oil to form a grease (semi-solid).
- a fluorine-based synthetic oil for example, polytetrafluoroethylene, fluorine resin typified by polytrifluorethylene, Li soap, Ca soap, metal soap typified by Al soap, Li composite soap, Ca composite soap, composite typified by Al composite soap
- examples include soap, urea compound, urethane compound, bentonite, silicon compound, sodium terephthalate, melamine cyanurate, and carbon black.
- Particularly preferred are polytetrafluoroethylene, silica, melamine cyanurate, carbon black and the like which are excellent in heat resistance.
- the proportion of the thickener in the grease is preferably 1 to 49% by mass, more preferably 10 to 40% by mass, based on the total amount of grease.
- the proportion of the thickener is 1 mass or more, sufficient fluidity is obtained, and when it is 49 mass% or less, it does not become too hard. That is, when the proportion of the thickener is within the above range, the balance between fluidity and hardness (softness) is excellent.
- the grease contains at least one inorganic acid salt selected from phosphates, tungstates, sulfates and sulfites as inorganic acid salts.
- These inorganic acid salts effectively improve the wear resistance.
- phosphates orthophosphate, hydrogen phosphate, polyphosphate, phosphite, metaphosphate and the like can be preferably used.
- the polyphosphate include pyrophosphate (diphosphate), tripolyphosphate, and tetrapolyacid salt.
- hydrogen phosphate, pyrophosphate (diphosphate), tripolyphosphate, and tetrapolyphosphate are preferable from the viewpoint of effect.
- tungstates include lithium tungstate, sodium tungstate, potassium tungstate, rubidium tungstate, cesium tungstate, magnesium tungstate, calcium tungstate, strontium tungstate, barium tungstate, zirconium tungstate, and tungstic acid.
- Examples include manganese, iron tungstate, cobalt tungstate, nickel tungstate, copper tungstate, silver tungstate, zinc tungstate, cadmium tungstate, and ammonium tungstate.
- the wear resistance can be remarkably improved by the synergistic effect.
- phosphate hydrogen phosphate, pyrophosphate (diphosphate), tripolyphosphate, and tetrapolyphosphate are preferable.
- these salts are preferably alkali metal salts, and more preferably sodium salts.
- Examples of the sulfate include lithium sulfate, sodium sulfate, potassium sulfate, rubidium sulfate, cesium sulfate, magnesium sulfate, calcium sulfate, and ammonium sulfate.
- Examples of the sulfite include lithium sulfite, sodium sulfite, potassium sulfite, rubidium sulfite, cesium sulfite, magnesium sulfite, calcium sulfite, and ammonium sulfite.
- alkali metal salts are preferable from the viewpoint of effects.
- Preferred examples of the alkali metal salt include sodium salt, potassium salt and lithium salt, and sodium salt is particularly preferable.
- a preferable blending amount of the above-described inorganic acid salt is 0.5% by mass or more and 15% by mass or less, a more preferable blending amount is 0.8% by mass or more and 12% by mass or less, and a more preferable blending amount is 2% by mass or more. It is 8 mass% or less.
- pyrophosphate especially sodium pyrophosphate is used as the inorganic acid salt, it is preferably about 0.8% by mass or more and 8% by mass or less.
- tungstate especially sodium tungstate is used, it is preferably about 2% by mass or more and 12% by mass or less.
- additives such as antioxidants, rust inhibitors, corrosion inhibitors, extreme pressure agents, and oil agents that are generally added to grease can be added as necessary.
- antioxidants examples include alkyl diphenylamine (preferably having an alkyl group having 4 to 20 carbon atoms), triphenylamine, phenyl- ⁇ -naphthylamine, phenothiazine, alkylated phenyl- ⁇ -naphthylamine, phenothiazine, and Amine-based antioxidants such as alkylated phenothiazines, phenol-based antioxidants such as 2,6-ditertiarybutyl-4-methylphenol and 4,4′-methylenebis (2,6-ditertiarybutylphenol), Or a sulfur type antioxidant is mentioned. These may be used individually by 1 type and may be used in combination of 2 or more type.
- the blending amount of the antioxidant is not particularly limited, but is preferably 0.05% by mass or more and 7% by mass or less based on the total amount of grease.
- the rust inhibitor examples include fatty acids, fatty acid soaps, fatty acid amine salts, alkyl sulfonates, oxidized paraffins, and polyoxyalkyl ethers.
- the compounding quantity of a rust preventive agent is not specifically limited, About 0.1 mass% or more and about 2 mass% or less are preferable on the basis of grease whole quantity.
- the corrosion inhibitor include various compounds such as benzotriazole, tolyltriazole, thiadiazole, and imidazole. These may be used individually by 1 type and may be used in combination of 2 or more type.
- the amount of the corrosion inhibitor is not particularly limited, but is preferably 0.01% by mass or more and 3% by mass or less, more preferably 0.01% by mass or more and 1% by mass or less, based on the total amount of grease. .
- Examples of the extreme pressure agent include a sulfur-based extreme pressure agent and a phosphorus-based extreme pressure agent.
- sulfur-based extreme pressure agents include sulfurized olefins, sulfurized fats and oils, sulfurized esters, thiocarbonates, dithiocarbamates, and polysulfides.
- Examples of the phosphorus-based extreme pressure agent include phosphites, phosphates, phosphonates, and amine salts or metal salts thereof. These may be used individually by 1 type and may be used in combination of 2 or more type.
- the compounding amount of the extreme pressure agent is not particularly limited, but is preferably 0.1% by mass or more and 20% by mass or less based on the total amount of grease.
- oily agent examples include aliphatic monocarboxylic acids, polymerized fatty acids, hydroxy fatty acids, aliphatic monoalcohols, aliphatic monoamines, aliphatic monocarboxylic amides, partial esters of polyhydric alcohols and aliphatic monocarboxylic acids. It is done. These may be used individually by 1 type and may be used in combination of 2 or more type. Although the compounding quantity of an oiliness agent is not specifically limited, It is preferable that it is the range of 0.01 mass% or more and 10 mass% or less on the basis of the composition whole quantity.
- a predetermined amount of a thickener (precursor-containing precursor), an inorganic acid salt, and other necessary additives are added to a fluorine-based synthetic oil (perfluoroalkyl polyether oil, etc.). Addition, heating and stirring can be used to make a grease, and if necessary, kneading can be performed with a three-roll or the like.
- the grease of the present invention is effective for bearings (such as rolling bearings and sliding bearings), gears, pin-bushes, ball screws, linear guides, and various sliding parts that are used under severe conditions at high temperatures.
- Example 1 to 14 Comparative Examples 1 to 3, Reference Examples 1 to 3
- Each test grease was prepared by blending a predetermined amount of inorganic acid salt shown in Table 1 below.
- the base oil perfluoropolyether having a kinematic viscosity of 40 ° C. of 400 mm 2 / s was used, and 25% by mass of polytetrafluoroethylene was blended as a thickener.
- the greases of the present invention according to Examples 1 to 14 are blended with a predetermined inorganic acid salt, so there is no problem with the environmental load, and even when compared with the sodium nitrite of the reference example (which has a large environmental load). Excellent wear resistance.
- the greases of Comparative Examples 1 to 3 are inferior in wear resistance because the predetermined inorganic acid salt according to the present invention is not blended.
- Table 2 shows the results of evaluating the wear resistance of the test grease using sodium pyrophosphate and sodium tungstate in the same manner as the test grease of Table 1.
- Example 3 added with sodium pyrophosphate alone (5.0% by mass) as an inorganic acid salt and Example 6 added with sodium tungstate alone (5.0% by mass), the same addition amount (total amount 5 The wear scar diameter of Example 16, which is 0.0 mass%) is remarkably small, and it can be understood that there is a synergistic effect of these additives.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Lubricants (AREA)
- Sliding-Contact Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
そこで、増ちょう剤として脂肪族ジカルボン酸金属塩、モノアミドモノカルボン酸金属塩またはモノエステルカルボン酸金属塩の少なくとも一種を添加したフッ素系グリースが提案されている(特許文献1参照)。特許文献1には、このフッ素系グリースによれば、耐摩耗性、耐漏洩性、洗浄性などにすぐれ、しかもコスト的にも満足し得るフッ素系グリースを提供できると記載されている。また増ちょう剤としてポリテトラフルオロエチレンと、錆止め剤としてセバンシン酸金属塩等の脂肪酸金属塩を添加したフッ素系グリースが提案されている(特許文献2参照)。特許文献2には、蒸発特性と防錆性に優れたフッ素系グリースを提供できると記載されている。
本発明は、防錆性を有し、かつ耐摩耗性に優れ、環境負荷も低いフッ素系グリースを提供することを目的とする。
(1)フッ素系合成油を基油とするグリースであって、リン酸塩、タングステン酸塩、硫酸塩および亜硫酸塩から選ばれる1種以上の無機酸塩を配合してなることを特徴とするグリース。
(2)上述のグリースにおいて、前記無機酸塩がアルカリ金属塩であることを特徴とするグリース。
(3)上述のグリースにおいて、前記リン酸塩が、オルトリン酸塩、リン酸水素塩、ポリリン酸塩、亜リン酸塩、およびメタリン酸塩の少なくともいずれかであることを特徴とするグリース。
(4)フッ素系合成油を基油とするグリースであって、無機酸塩を配合してなり、前記無機酸塩がリン酸塩とタングステン酸塩であることを特徴とするグリース。
(5)上述のグリースにおいて、前記リン酸塩がリン酸水素塩、ピロリン酸塩、トリポリリン酸塩、およびテトラポリリン酸塩の少なくともいずれかであることを特徴とするグリース。
(6)上述のグリースにおいて、同じアルカリ金属の塩を用いることを特徴とするグリース。
(7)上述のグリースにおいて、前記無機酸塩がナトリウム塩であることを特徴とするグリース。
(8)上述のグリースにおいて、前記無機酸塩の配合量がグリース全量基準で0.5質量%以上15質量%以下であることを特徴とするグリース。
(9)上述のグリースにおいて、前記フッ素系合成油がパーフルオロアルキルポリエーテル油であることを特徴とするグリース。
本グリースにおける基油の割合は、グリース全量基準で50質量%以上98質量%以下が好ましく、65質量%以上85質量%以下であることがより好ましい。
本グリースにおける増ちょう剤の割合は、グリース全量を基準として、好ましくは1~49質量%、さらに好ましくは10~40質量%である。増ちょう剤の割合が1質量以上であると十分な流動性を有するようになり、49質量%以下であると硬くなりすぎることもない。すなわち、増ちょう剤の割合が上記範囲であると流動性と硬さ(柔らかさ)のバランスに優れる。
上記したリン酸塩としては、オルトリン酸塩、リン酸水素塩、ポリリン酸塩、亜リン酸塩、およびメタリン酸塩などが好ましく使用できる。ポリリン酸塩としてはピロリン酸塩(二リン酸塩)、トリポリリン酸塩、およびテトラポリ酸塩などが挙げられる。これらのリン酸塩のなかでも効果の観点より、リン酸水素塩、ピロリン酸塩(二リン酸塩)、トリポリリン酸塩、およびテトラポリリン酸塩が好ましい。
ここで、上記したリン酸塩とタングステン酸塩を併用すると、その相乗効果により耐摩耗性を格段に向上させることができる。その際、リン酸塩としてはリン酸水素塩、ピロリン酸塩(二リン酸塩)、トリポリリン酸塩、およびテトラポリリン酸塩が好ましい。また、これらの塩としてはともにアルカリ金属塩であることが好ましく、ともにナトリウム塩であることがより好ましい。
亜硫酸塩としては、例えば、亜硫酸リチウム、亜硫酸ナトリウム、亜硫酸カリウム、亜硫酸ルビジウム、亜硫酸セシウム、亜硫酸マグネシウム、亜硫酸カルシウム、および亜硫酸アンモニウムなどが挙げられる。
上記した無機酸塩の好ましい配合量は0.5質量%以上15質量%以下であり、より好ましい配合量は0.8質量%以上12質量%以下であり、さらに好ましい配合量は2質量%以上8質量%以下である。
また、無機酸塩としてピロリン酸塩、特にピロリン酸ナトリウムを用いた場合は、0.8質量%以上8質量%以下程度が好ましい。タングステン酸塩、特にタングステン酸ナトリウムを用いた場合は、2質量%以上12質量%以下程度が好ましい。
酸化防止剤の配合量は、特に限定されないが、グリース全量基準で0.05質量%以上7質量%以下であることが好ましい。
防錆剤の配合量は、特に限定されないがグリース全量基準で0.1質量%以上2質量%以下程度が好ましい。
また腐食防止剤としては、例えば、ベンゾトリアゾール系、トリルトリアゾール系、チアジアゾール系、およびイミダゾール系の各種化合物が挙げられる。これらは、1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。
腐食防止剤の配合量は、特に限定されないが、グリース全量基準で、0.01質量%以上3質量%以下であることが好ましく、0.01質量%以上1質量%以下であることがより好ましい。
極圧剤の配合量は、特に限定されないが、グリース全量基準で、0.1質量%以上20質量%以下であることが好ましい。
油性剤の配合量は、特に限定されないが、組成物全量基準で、0.01質量%以上10質量%以下の範囲であることが好ましい。
本発明のグリースは、高温で、苛酷な条件下で使用される軸受(転がり軸受や滑り軸受等)、ギヤ、ピン-ブッシュ、ボールねじ、リニアガイド、および各種摺動部等に有効である。
〔実施例1~14、比較例1~3、参考例1~3〕
以下の表1に示す無機酸塩を所定量配合して各試験グリースを調製した。なお、基油としては40℃動粘度が400mm2/sのパーフルオロポリエーテルを用い、増ちょう剤としては、ポリテトラフルオロエチレンを25質量%配合した。
DIN51834に記載のボールオンディスク試験機を用い、ディスク上に各試験グリースを塗布した後、以下の条件で摩擦試験を行い、試験開始60分後の摩耗痕直径の縦横平均値(単位 mm)を求めた。結果を表1に示す。
温度:190℃
荷重:50N
振幅:1mm
振幅数:50Hz
ボール径:10mm
比較例1~3のグリースは、本発明に係る所定の無機酸塩が配合されていないので耐摩耗性に劣る。
無機酸塩としてピロリン酸ナトリウム単独(5.0質量%)で添加した実施例3と、タングステン酸ナトリウム単独(5.0質量%)で添加した実施例6にくらべ、同じ添加量(合計量 5.0質量%)である実施例16の摩耗痕径が著しく小さく、これらの添加剤の相乗効果があることが理解できる。
Claims (9)
- フッ素系合成油を基油とするグリースであって、
リン酸塩、タングステン酸塩、硫酸塩および亜硫酸塩から選ばれる1種以上の無機酸塩を配合してなる
ことを特徴とするグリース。 - 請求項1に記載のグリースにおいて、
前記無機酸塩がアルカリ金属塩である
ことを特徴とするグリース。 - 請求項1または請求項2に記載のグリースにおいて、
前記リン酸塩が、オルトリン酸塩、リン酸水素塩、ポリリン酸塩、亜リン酸塩、およびメタリン酸塩の少なくともいずれかである
ことを特徴とするグリース。 - フッ素系合成油を基油とするグリースであって、
無機酸塩を配合してなり、
前記無機酸塩がリン酸塩とタングステン酸塩である
ことを特徴とするグリース。 - 請求項4に記載のグリースにおいて、
前記リン酸塩がリン酸水素塩、ピロリン酸塩、トリポリリン酸塩、およびテトラポリリン酸塩の少なくともいずれかである
ことを特徴とするグリース。 - 請求項4または請求項5に記載のグリースにおいて、
同じアルカリ金属の塩を用いることを特徴とするグリース。 - 請求項4または請求項5に記載のグリースにおいて、
前記無機酸塩がナトリウム塩である
ことを特徴とするグリース。 - 請求項1から請求項7までのいずれか1項に記載のグリースにおいて、
前記無機酸塩の配合量がグリース全量基準で0.5質量%以上15質量%以下である
ことを特徴とするグリース。 - 請求項1から請求項8までのいずれか1項に記載のグリースにおいて、
前記フッ素系合成油がパーフルオロアルキルポリエーテル油である
ことを特徴とするグリース。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/022,129 US10760030B2 (en) | 2013-09-18 | 2014-09-17 | Grease |
EP14845678.3A EP3045516B1 (en) | 2013-09-18 | 2014-09-17 | Grease |
CN201480051221.XA CN105531358B (zh) | 2013-09-18 | 2014-09-17 | 润滑脂 |
BR112016005148-3A BR112016005148B1 (pt) | 2013-09-18 | 2014-09-17 | massa lubrificante |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-192833 | 2013-09-18 | ||
JP2013192833A JP6055746B2 (ja) | 2013-09-18 | 2013-09-18 | グリース |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015041227A1 true WO2015041227A1 (ja) | 2015-03-26 |
Family
ID=52688875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/074499 WO2015041227A1 (ja) | 2013-09-18 | 2014-09-17 | グリース |
Country Status (6)
Country | Link |
---|---|
US (1) | US10760030B2 (ja) |
EP (1) | EP3045516B1 (ja) |
JP (1) | JP6055746B2 (ja) |
CN (1) | CN105531358B (ja) |
BR (1) | BR112016005148B1 (ja) |
WO (1) | WO2015041227A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110218607B (zh) * | 2019-07-01 | 2022-06-03 | 南京工程学院 | 一种复合掺杂b-n的纳米氧化石墨烯/钨酸钙/二氧化硅的冲压模具润滑液及其制备方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001354986A (ja) | 2000-06-12 | 2001-12-25 | Nok Kuluver Kk | 潤滑グリース組成物 |
JP2003239090A (ja) * | 2002-02-18 | 2003-08-27 | Ntn Corp | 防錆グリースおよび転がり軸受 |
JP2004204185A (ja) * | 2002-12-26 | 2004-07-22 | Kyodo Yushi Co Ltd | グリース組成物及びその使用 |
JP2007039635A (ja) * | 2005-06-27 | 2007-02-15 | Nsk Ltd | グリース組成物及び転動装置 |
JP2007297553A (ja) * | 2006-05-02 | 2007-11-15 | Dow Corning Toray Co Ltd | 潤滑グリース組成物 |
WO2008004613A1 (fr) * | 2006-07-05 | 2008-01-10 | Kyodo Yushi Co., Ltd. | Composition de graisse et palier |
JP2009227958A (ja) * | 2007-08-28 | 2009-10-08 | Showa Shell Sekiyu Kk | 潤滑剤組成物 |
WO2010023911A1 (ja) * | 2008-08-29 | 2010-03-04 | オイレス工業株式会社 | 複層摺動部材及びそれを用いた自動車のラックピニオン式舵取装置におけるラックガイド |
JP2012180473A (ja) * | 2011-03-02 | 2012-09-20 | Showa Shell Sekiyu Kk | 潤滑油のための消泡剤組成物及びそれを用いた消泡方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1109884A (fr) * | 1953-08-10 | 1956-02-02 | Bataafsche Petroleum | Compositions de graisse |
US3850823A (en) * | 1970-10-21 | 1974-11-26 | Atlantic Richfield Co | Method for producing corrosion inhibiting compositions |
JPS62214186A (ja) * | 1986-03-13 | 1987-09-19 | Nippon Shokubai Kagaku Kogyo Co Ltd | 金属の腐蝕防止剤 |
US6528457B2 (en) * | 2001-06-28 | 2003-03-04 | E. I. Du Pont De Nemours And Company | Composition comprising halogenated oil |
JP4739728B2 (ja) * | 2003-11-05 | 2011-08-03 | 株式会社Adeka | (ジチオ)リン酸エステル系潤滑油添加剤、ならびにこれを含有する潤滑油組成物およびグリース組成物 |
JP4811408B2 (ja) * | 2005-11-04 | 2011-11-09 | Nokクリューバー株式会社 | グリース組成物 |
JP4977360B2 (ja) * | 2005-12-07 | 2012-07-18 | 株式会社ニッペコ | 潤滑グリース組成物 |
CN101679899B (zh) * | 2007-06-20 | 2013-06-12 | 慕尼黑克吕伯尔润滑器两合公司 | 润滑脂组合物 |
CN103275790B (zh) * | 2013-05-19 | 2014-12-03 | 广西大学 | 高抗水淋连铸机润滑脂 |
-
2013
- 2013-09-18 JP JP2013192833A patent/JP6055746B2/ja active Active
-
2014
- 2014-09-17 WO PCT/JP2014/074499 patent/WO2015041227A1/ja active Application Filing
- 2014-09-17 EP EP14845678.3A patent/EP3045516B1/en active Active
- 2014-09-17 US US15/022,129 patent/US10760030B2/en active Active
- 2014-09-17 CN CN201480051221.XA patent/CN105531358B/zh active Active
- 2014-09-17 BR BR112016005148-3A patent/BR112016005148B1/pt active IP Right Grant
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001354986A (ja) | 2000-06-12 | 2001-12-25 | Nok Kuluver Kk | 潤滑グリース組成物 |
JP2003239090A (ja) * | 2002-02-18 | 2003-08-27 | Ntn Corp | 防錆グリースおよび転がり軸受 |
JP2004204185A (ja) * | 2002-12-26 | 2004-07-22 | Kyodo Yushi Co Ltd | グリース組成物及びその使用 |
JP2007039635A (ja) * | 2005-06-27 | 2007-02-15 | Nsk Ltd | グリース組成物及び転動装置 |
JP2007297553A (ja) * | 2006-05-02 | 2007-11-15 | Dow Corning Toray Co Ltd | 潤滑グリース組成物 |
WO2008004613A1 (fr) * | 2006-07-05 | 2008-01-10 | Kyodo Yushi Co., Ltd. | Composition de graisse et palier |
JP2008013652A (ja) | 2006-07-05 | 2008-01-24 | Kyodo Yushi Co Ltd | グリース組成物及び軸受 |
JP2009227958A (ja) * | 2007-08-28 | 2009-10-08 | Showa Shell Sekiyu Kk | 潤滑剤組成物 |
WO2010023911A1 (ja) * | 2008-08-29 | 2010-03-04 | オイレス工業株式会社 | 複層摺動部材及びそれを用いた自動車のラックピニオン式舵取装置におけるラックガイド |
JP2012180473A (ja) * | 2011-03-02 | 2012-09-20 | Showa Shell Sekiyu Kk | 潤滑油のための消泡剤組成物及びそれを用いた消泡方法 |
Also Published As
Publication number | Publication date |
---|---|
JP6055746B2 (ja) | 2016-12-27 |
EP3045516A1 (en) | 2016-07-20 |
JP2015059153A (ja) | 2015-03-30 |
EP3045516A4 (en) | 2017-04-19 |
EP3045516B1 (en) | 2018-04-18 |
CN105531358A (zh) | 2016-04-27 |
US20160237374A1 (en) | 2016-08-18 |
US10760030B2 (en) | 2020-09-01 |
CN105531358B (zh) | 2019-08-13 |
BR112016005148B1 (pt) | 2020-12-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5109331B2 (ja) | グリース組成物 | |
JP4810842B2 (ja) | 潤滑剤組成物 | |
US20120142566A1 (en) | Grease composition and mechanical part | |
JP6797033B2 (ja) | ウレア系グリース組成物 | |
US9096814B2 (en) | Lubricating grease composition | |
JP5516679B2 (ja) | 潤滑油組成物 | |
JP2008013652A (ja) | グリース組成物及び軸受 | |
JP5766425B2 (ja) | グリース組成物 | |
JP6703849B2 (ja) | プロペラシャフトスプライン用グリース組成物およびプロペラシャフトスプライン | |
WO2011059097A1 (ja) | 難燃性グリース組成物 | |
JP5665298B2 (ja) | グリース組成物及び等速ジョイント | |
JP6055746B2 (ja) | グリース | |
KR20190022869A (ko) | 그리스 조성물 | |
JP5627921B2 (ja) | 樹脂用グリース組成物 | |
JP5282369B2 (ja) | 潤滑油組成物 | |
JP6317228B2 (ja) | 潤滑油組成物 | |
JP2024024344A (ja) | グリースまたは潤滑油組成物に用いられる基油 | |
JP2021024923A (ja) | フッ素グリース組成物 | |
Nagarkoti | Tribology of 2-Mercaptobenzothiazole in Lithium Complex Grease | |
PL218135B1 (pl) | Biodegradowalny smar plastyczny |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201480051221.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14845678 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15022129 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2014845678 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014845678 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112016005148 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112016005148 Country of ref document: BR Kind code of ref document: A2 Effective date: 20160308 |