CN105143419B - Hydraulic fluid compositions - Google Patents
Hydraulic fluid compositions Download PDFInfo
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- CN105143419B CN105143419B CN201480021160.2A CN201480021160A CN105143419B CN 105143419 B CN105143419 B CN 105143419B CN 201480021160 A CN201480021160 A CN 201480021160A CN 105143419 B CN105143419 B CN 105143419B
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- 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
- C10M169/041—Mixtures of base-materials and additives the additives being macromolecular compounds only
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- 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
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
- C10M101/02—Petroleum fractions
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- 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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
- C10M145/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate monocarboxylic
- C10M145/14—Acrylate; Methacrylate
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- 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
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
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- 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
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions 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
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
-
- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/041—Triaryl phosphates
-
- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/04—Molecular weight; Molecular weight distribution
-
- 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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/40—Low content or no content 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
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Lubricants (AREA)
Abstract
The present invention provides a kind of hydraulic fluid compositions, and the kinematic viscosity that above-mentioned hydraulic fluid compositions contain at 40 DEG C is 15~50mm2/ s, viscosity index (VI) are that less than 125, aromatic component is more than 1 mass % lube base oil, and on the basis of hydraulic fluid compositions total amount, and content is the polymethacrylates that 1~40 mass %, number-average molecular weight are less than 28000.
Description
Technical field
The present invention relates to hydraulic fluid compositions.
Background technology
In recent years, it have developed a kind of method that energy-saving hydraulic oil is used as reply global greenhouse effect.Existing
In energy-saving hydraulic oil, for example, there is the type of energy consumption when seeking come cutting device to start by reducing low temperature viscosity.
In addition, also exploitation has by coordinating viscosity index improver, the viscosity B coefficent of hydraulic oil is set to reduce to reduce oil
The energy-saving hydraulic of energy consumption is oily during stable operation after temperature rise.The oily viscosity B coefficent by reducing hydraulic oil of this energy-saving hydraulic
(high viscosity index (HVI)) prevents the oil leak (internal leakage) specific to construction machinery inside various hydraulic machines, to realize drop
Low energy consumption (for example can refer to patent document 1 to 3).
Patent document
Patent document 1：Japanese Patent Laid-Open 2005-307197 publications
Patent document 2：Japanese Patent Laid-Open 2011-046900 publications
Patent document 3：Japanese Patent Laid-Open 2012-180535 publications
The content of the invention
However, when energy-saving hydraulic described in using above-mentioned patent document 1 to 3 is oily, can be because the height of hydraulic oil
The resistance of ducting caused by viscosity index (VI) and cause loss to increase.Therefore, even by preventing the internal leakage from can cut down energy
Consumption, but on this point of the overall energy efficiency of lifting oil hydraulic system still have room for improvement.
The present invention is to complete in view of the foregoing, its object is to provide one kind can and meanwhile prevent internal leakage and
The resistance of ducting is reduced, and the hydraulic fluid compositions of the overall energy efficiency of oil hydraulic system can be lifted.
The present inventors by further investigation, eventually found it is a kind of can be while realizing prevents oil hydraulic system
Internal leakage and the reduction resistance of ducting, and the composition of outstanding viscosity characteristicses can be played, so as to obtain the present invention.
That is, the present invention provides a kind of hydraulic fluid compositions, and above-mentioned hydraulic fluid compositions contain the kinematic viscosity at 40 DEG C
For 15~50mm2/ s, viscosity index (VI) are that less than 125, aromatic component is more than 1 mass % lube base oil, and with
On the basis of hydraulic fluid compositions total amount, content is the polymethylacrylic acid that 1~40 mass %, number-average molecular weight are less than 28000
Ester.
Kinematic viscosity (units of (A) of hydraulic fluid compositions at 80 DEG C：mm2/ s) and (B) shear viscosity (unit：
MPas, shearing condition：106/ s) ratio (A/B) be preferably less than 1.15.
A kind of hydraulic fluid compositions can be provided according to the present invention, the hydraulic fluid compositions can be realized simultaneously prevents inside
Leakage and the reduction resistance of ducting, and the overall energy efficiency of oil hydraulic system can be lifted.
Embodiment
The preferred embodiment of the present invention is illustrated below.
Hydraulic fluid compositions involved by present embodiment, are 15~50mm containing the kinematic viscosity at 40 DEG C2It is/s, viscous
Degree index is that less than 125, aromatic component is more than 1 mass % lube base oil, and with hydraulic fluid compositions total amount
On the basis of, content is the polymethacrylates that 1~40 mass %, number-average molecular weight are less than 28000.
As the lube base oil used in present embodiment, mineral oil, synthetic hydrocarbon oil etc. can be enumerated.For this
A little lube base oils, can be used alone a kind of or are used in combination of two or more.
As mineral oil, it is not particularly limited, crude oil is passed through into air-distillation and vacuum distillation institute for example, can enumerate
Lube cut, by appropriately combined solvent deasphalting, solvent extraction, be hydrocracked, solvent dewaxing, catalytic dewaxing, plus
The paraffin mineral oil or naphthene series mineral oil refined after the refinement treatments such as hydrogen is refined, sulfuric acid flushing, clay treatment.
As synthetic hydrocarbon oil, for example, poly-alpha-olefin (polybutene, 1- octene oligomers, 1- decylene oligomers can be enumerated
Deng), alkylbenzene, alkylnaphthalene etc..
Kinematic viscosity of the lube base oil at 40 DEG C is 15~50mm2/ s, preferably 20~45mm2/ s, more preferably
25~40mm2/ s, more preferably 25~35mm2/s.Kinematic viscosity when 40 DEG C is 15mm2During/more than s, it can prevent
Flash-point is reduced, and is preferred from the viewpoint of vapo(u)rability.In addition, kinematic viscosity when 40 DEG C is 50mm2During/below s,
The resistance of ducting can be reduced.
The viscosity index (VI) of lube base oil is less than 125, preferably less than 120.In addition, the viscosity of lube base oil
Index is preferably more than 90, more preferably more than 100, more preferably more than 105.When viscosity index (VI) is more than 90, energy
Enough kinematic viscosity rises suppressed while the kinematic viscosity under ensuring high temperature under low temperature, therefore, it is possible to suppress oil hydraulic system
Efficiency is reduced.
It should illustrate that " kinematic viscosity " and " viscosity index (VI) " in the present invention refers to be surveyed according to JIS K 2283
Fixed numerical value.
The aromatic component of lube base oil is more than 1 mass %, preferably more than 1.5 mass %, more preferably 2 matter
Measure more than %.When aromatic component is more than 1 mass %, the dissolubility and thickening effect of polymethacrylates have elevated
Trend.In addition, the upper limit of the aromatic component of lube base oil is not particularly limited, for example can be for below 35% mass.
The sulfur content of lube base oil is not particularly limited, preferably below 5000 mass ppm, more preferably 3000
Below quality ppm, more preferably below 1000 mass ppm, most preferably 300 mass ppm.When sulfur content is 5000 mass
It is preferred from the viewpoint of oxidation stability and corrosion resistance during below ppm.
The content of lube base oil, on the basis of hydraulic fluid compositions total amount, preferably more than 40 mass %, more preferably
For more than 50 mass %, more preferably more than 70 mass %.In addition, the content of lube base oil, is combined with hydraulic oil
On the basis of thing total amount, preferably below 99 mass %, more preferably below 98 mass %, more preferably 95 mass % with
Under.When the content of lube base oil is more than 40 mass %, the excellent effect of hydraulic oil is easily fully played.
Polymethacrylates contained by the hydraulic fluid compositions of present embodiment, be number-average molecular weight be 28000 with
Under polymethacrylates.As the preference of the polymethacrylates, it can enumerate represented with following formulas (1)
Structural units non-dispersive type polymethacrylates, it is and scattered with the structural units represented by following formulas (2)
Type polymethacrylates etc..
[changing 1]
[in formula (1), a is more than 1 integer, and is less than 28000 to make the number-average molecular weight of polymethacrylates
Integer.In addition, R1Represent the alkyl that carbon number is 1~22.]
[changing 2]
[in formula (2), b and c are respectively more than 1 integer, and are respectively to make the number-average molecular weight of polymethacrylates
For less than 28000 integer.In addition, R2Represent the alkyl that carbon number is 1~22, R3Hydrogen atom or methyl are represented, X is represented
Polar group.]
The number-average molecular weight of polymethacrylates be less than 28000, preferably less than 25000, more preferably 23000 with
Under, more preferably less than 20000.Also, the number-average molecular weight of polymethacrylates, preferably more than 2000, it is more excellent
Elect more than 5000, more preferably more than 10000 as.When the number-average molecular weight of polymethacrylates is less than 28000,
It is preferred from the viewpoint of the lifting effect of shear viscosity；When for more than 2000 when, from the lifting effect of viscosity index (VI)
From the viewpoint of be preferred.
The content of polymethacrylates, is 1~40 mass % on the basis of hydraulic fluid compositions total amount.Poly- methyl-prop
The content of olefin(e) acid ester, preferably more than 3 mass %, more preferably more than 5 mass %, more preferably more than 10 mass %.
Also, the content of polymethacrylates, preferably below 30 mass %, more preferably below 25 mass %, further preferably
For below 20 mass %.When the content of polymethacrylates is more than 1 mass %, from the lifting effect of shear viscosity
It is preferred from the point of view of viewpoint；When the content of polymethacrylates is below 35 mass %, from cost Equilibrium can be expected
It is preferred from the viewpoint of effect.
Kinematic viscosity of the hydraulic fluid compositions at 40 DEG C, preferably 20mm2/ more than s, more preferably 30mm2/ more than s,
More preferably 40mm2/ more than s, most preferably 41.4mm2/ more than s.Also, the kinematic viscosity at 40 DEG C, be preferably
80mm2/ below s, more preferably 70mm2/ below s, more preferably 60mm2/ below s, most preferably 50.6mm2/ below s.
Kinematic viscosity when hydraulic fluid compositions are at 40 DEG C is 20mm2During/more than s, from the viewpoint of the durability of oil hydraulic system
It is preferred；In 80mm2It is preferred from the viewpoint of reduction friction during/below s.
Kinematic viscosity (units of (A) of hydraulic fluid compositions at 80 DEG C：mm2/ s) glued with the high shear at 80 DEG C of (B)
Spend (unit：MPas, shearing condition：106/ s) ratio (A/B) be preferably less than 1.15, more preferably less than 1.14, further
Preferably less than 1.13, most preferably less than 1.12.When above-mentioned ratio (A/B) is less than 1.15, hindered from the efficiency of pump and pipeline
It is preferred from the viewpoint of power.On the other hand, the lower limit of above-mentioned ratio (A/B) is not particularly limited, and above-mentioned ratio is for example
For more than 1.0.
It should illustrate that " shear viscosity " in the present invention refers to ASTM (D4741, D4683, D6616), CEC (L-
The result of gained 36A-90) is measured for standard.
In order that the excellent effect of the hydraulic fluid compositions involved by present embodiment is further lifted, can basis
Need further to add EP agent, antioxidant, pour-point depressant, antirust agent, matal deactivator, viscosity index improver, disappear
Infusion, demulsifier, oiliness improver etc..These additives can be used alone one kind, can also combine two or more used.
As EP agent, for example, chalcogenide compound, two sulphur such as sulfurised ester, vulcanization grease, polysulfide can be enumerated
For trbasic zinc phosphate, phosphorus series compound, wherein being preferred to use phosphorus series compound.As phosphorus series compound, specifically, phosphorus can be enumerated
Acid esters, phosphate ester acid, the amine salt of phosphate ester acid, chlorinated phosphate, phosphite ester and thiophosphate etc..These phosphorus
Based compound is phosphoric acid, phosphorous acid or D2EHDTPA and alkanol, the ester of polyether-type alcohol or derivatives thereof.
In order to obtain higher abrasion resistance properties, in above-mentioned phosphorus series compound preferably phosphoric acid ester, phosphate ester acid and
The amine salt of phosphate ester acid, wherein more preferred phosphate.The content of EP agent, using the total amount of hydraulic fluid compositions as base
Standard, preferably 0.05~5 mass %.
As antioxidant, for example, phenol compound, the benzene such as BHT (DBPC) can be enumerated
The aromatic amines such as base-alpha-naphthylamine and organo-metallic compound.The content of phenolic antioxidants, with the total of hydraulic fluid compositions
On the basis of amount, preferably 0.01~2 mass %.In addition, the content of amine antioxidants, using the total amount of hydraulic fluid compositions as base
Standard, preferably 0.001~2 mass %.
As pour-point depressant, it can enumerate more than one or both of various acrylate and methacrylate
The EVA of monomer or its hydride etc..The content of pour-point depressant, on the basis of the total amount of hydraulic fluid compositions, preferably 0.01~
5 mass %.
As antirust agent, the partial ester of amino acid derivativges, polyalcohol can be enumerated；Wool acid esters, alkyl acid esters, alkene
The esters such as base succinate；Methyl amimoacetic acid；The polyol partial esters class such as sorbitan fatty acid ester；Fatty acid metal salts, lanolin fatty acid
The metal soaps such as metal salt, oxidized wax metal salt；The Sulfonateses such as sulfoacid calcium, barium sulfonate；Oxidized wax；Amine；Phosphoric acid；Phosphate
Deng.The content of antirust agent, on the basis of the total amount of hydraulic fluid compositions, preferably 0.01~5 mass %.
As matal deactivator, benzotriazole, thiadiazole, glyoxaline compound etc. can be enumerated.Matal deactivator
Content, on the basis of the total amount of hydraulic fluid compositions, preferably 0.001~1 mass %.
Hydraulic fluid compositions can further contain the viscosity index improver beyond above-mentioned polymethacrylates.As
Above-mentioned viscosity index improver, can enumerate the copolymerization of the monomer more than one or both of all kinds of methacrylates
Thing or its hydride, polyisobutene or its hydrogenation products, the hydride of styrenic-diene copolymer and alkyl styrenes etc.
Non-dispersive type viscosity index improver etc..The content of above-mentioned viscosity index improver on the basis of the total amount of hydraulic fluid compositions,
Preferably 0.01~15 mass %.
As defoamer, the type siloxanes such as dimethyl siloxane, fluorosilicone can be enumerated.The content of defoamer is with hydraulic pressure
On the basis of the total amount of fluid composition, preferably 0.001~0.05 mass %.
As demulsifier, polyoxyalkyl ethyl glycol, polyoxyalkylene alkyl ether, polyoxyalkylene alkyl can be enumerated
Acid amides, polyoxyalkylene fatty acid esters etc..
As oiliness improver, aliphatic acid, esters, alcohols etc. can be enumerated.The content of oiliness improver is with the total of hydraulic fluid compositions
On the basis of amount, preferably 0.01~0.5 mass %.
Embodiment
The present invention will further be illustrated by embodiment and comparative example below, but these contents are not
Any restriction effect is risen to the present invention.
In embodiment 1 to 3 and comparative example 1 to 3, coordinate lube base oil according to the composition as shown in table 1 and table 2
And additive, prepare hydraulic fluid compositions.When preparing hydraulic fluid compositions, adjusted according to the molecular weight of viscosity index improver
Its whole use level, so that kinematic viscosity of the hydraulic fluid compositions at 40 DEG C is adjusted, so that ISO viscosity grades reach VG46.It is real
The lube base oil and additive applied used in example and comparative example are as described below.
<Lube base oil>
Base oil 1：Solvent refining mineral oil (aromatic composition content：30.0 mass %, sulfur content：2300 mass ppm,
Kinematic viscosity at 40 DEG C：28.6mm2/ s, viscosity index (VI)：101)
Base oil 2：Solvent refining mineral oil+hydrofining mineral oil (aromatic composition content：13.0 mass %, sulfur-bearing
Amount：600 mass ppm, kinematic viscosity at 40 DEG C：26.6mm2/ s, viscosity index (VI)：103)
Base oil 3：Hydrofining mineral oil (aromatic composition content：2.0 quality %, sulfur content：Below 10 mass ppm,
Kinematic viscosity at 40 DEG C：29.5mm2/ s, viscosity index (VI)：117)
Base oil 4：Hydrofining mineral oil (aromatic composition content：0.5 mass %, sulfur content：Below 10 mass ppm,
Kinematic viscosity at 40 DEG C：36.4mm2/ s, viscosity index (VI)：131)
Base oil 5：Hydrofining mineral oil (aromatic composition content：0.5 mass %, sulfur content：Below 10 mass ppm,
Kinematic viscosity at 40 DEG C：39.6mm2/ s, viscosity index (VI)：130)
Here aromatic composition content, is according to Analytical Chemistry the 44th volumes No. 6 (1972)
915-919 pages of " Separation of High-Boiling Petroleum Distillates Using Gradient
Elution Through Dual-Packed (Silica Gel-Alumina Gel) Adsorption Columns) " it is described
Silica-alumina gel chromatography be measured gained result.
In addition, sulfur content is by ASTM D4951 " Standard Test Method for Determination of
Additive Elements in Lubricating Oils by Inductively Coupled Plasma Atomic
Emission Spectrometry " are measured.
In addition, kinematic viscosity and viscosity index (VI) are measured according to JIS K2283.
<Viscosity index improver>
A：(エ ボ ニ ッ Network デ グ サ companies manufacture polymethacrylates：JMB3587, the structure with such as formula (1)
Unit, number-average molecular weight 20000)
B：(ヘ Application ケ Le ジ ャ パ Application company manufactures polymethacrylates：カ ネ ル ー Block 2091, with such as formula
(2) structural units, number-average molecular weight 40000)
<Other additives>
Tricresyl phosphate, DBPC 2,6 ditertiary butyl p cresol (DBPC) and pour-point depressant are used as other additives.
For each hydraulic fluid compositions resulting in embodiment 1 to 3 and comparative example 1 to 3, according to JIS K2283 to it
40 DEG C, 80 DEG C and 100 DEG C at kinematic viscosity and viscosity index (VI) be measured.In addition, according to ASTM (D4741,
D4683, D6616), CEC (L-36A-90), to each hydraulic fluid compositions at 80 DEG C, shearing condition be 106In the environment of/s
Shear viscosity is measured.As device is determined, using USV (the Ultra Shear of PCS Instruments companies manufacture
Viscometer) viscosimeter.Its result is shown in table 1 and table 2.
For each hydraulic fluid compositions resulting in embodiment 1 to 3 and comparative example 1 to 3, HPV35+35 pumps are carried out real
Test.Specifically, the rotation torque of pump is measured under following experiment condition, so as to calculate whole efficiency.Its result
Shown in table 1 and table 2.
Pump name：コマツHPV 35+35
Pump output+discharge rate：40L/min
Pump-type：Swash plate type
Oil temperature：80℃
Pressure：It is non-loaded, 35MPa
Revolution speed：2100rpm
[table 1]
[table 2]
Claims (1)
1. hydraulic fluid compositions, it contains：
Lube base oil, kinematic viscosity of the lube base oil at 40 DEG C is 15~50mm2/ s, viscosity index (VI) is 125
Hereinafter, aromatic component is more than 1 mass %；With
Polymethacrylates, the polymethacrylates is on the basis of hydraulic fluid compositions total amount, and content is 1~40 matter
% is measured, number-average molecular weight is less than 28000,
The hydraulic fluid compositions comprise only number-average molecular weight be less than 28000 the polymethacrylates as poly- methyl
Acrylate,
The ratio (A/B) of kinematic viscosity of (A) of the hydraulic fluid compositions at 80 DEG C and the shear viscosity of (B) at 80 DEG C
For less than 1.14, wherein, the unit of the kinematic viscosity is mm2/ s, the unit of the shear viscosity is mPas, shearing bar
Part is 106/s。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013131440A JP6134212B2 (en) | 2013-06-24 | 2013-06-24 | Hydraulic fluid composition |
| JP2013-131440 | 2013-06-24 | ||
| PCT/JP2014/066698 WO2014208549A1 (en) | 2013-06-24 | 2014-06-24 | Hydraulic oil composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105143419A CN105143419A (en) | 2015-12-09 |
| CN105143419B true CN105143419B (en) | 2017-10-13 |
Family
ID=52141882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480021160.2A Active CN105143419B (en) | 2013-06-24 | 2014-06-24 | Hydraulic fluid compositions |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160115420A1 (en) |
| JP (1) | JP6134212B2 (en) |
| CN (1) | CN105143419B (en) |
| WO (1) | WO2014208549A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3754000A4 (en) * | 2018-02-16 | 2021-09-29 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition |
| CN109679748A (en) * | 2018-12-27 | 2019-04-26 | 山东奇士登润滑科技有限公司 | A kind of leakproof antiwear hydraulic oil and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1711345A (en) * | 2002-11-05 | 2005-12-21 | 新日本石油株式会社 | Lubricating oil |
| CN101883839A (en) * | 2008-01-15 | 2010-11-10 | 新日本石油株式会社 | Lubricant composition |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911151B1 (en) * | 1970-03-31 | 1974-03-15 | ||
| JPS5674193A (en) * | 1979-11-22 | 1981-06-19 | Hitachi Constr Mach Co Ltd | Hydraulic oil composition |
| US6992049B2 (en) * | 2002-01-31 | 2006-01-31 | Exxonmobil Research And Engineering Company | Lubricating oil compositions |
| KR101347964B1 (en) * | 2004-10-22 | 2014-01-07 | 제이엑스 닛코닛세키에너지주식회사 | Lubricant composition for transmission |
| US20080302422A1 (en) * | 2007-06-07 | 2008-12-11 | Rohmax Additives Gmbh | Power output in hydraulic systems |
| JP5301226B2 (en) * | 2007-09-26 | 2013-09-25 | 昭和シェル石油株式会社 | Hydraulic oil for construction machinery |
| JP2012505301A (en) * | 2008-10-14 | 2012-03-01 | エボニック ローマックス アディティヴス ゲゼルシャフト ミット ベシュレンクテル ハフツング | Hydraulic hydraulic fluid composition to reduce hydraulic system noise |
| JP5789111B2 (en) * | 2011-03-25 | 2015-10-07 | Ｊｘ日鉱日石エネルギー株式会社 | Lubricating oil composition |
-
2013
- 2013-06-24 JP JP2013131440A patent/JP6134212B2/en active Active
-
2014
- 2014-06-24 CN CN201480021160.2A patent/CN105143419B/en active Active
- 2014-06-24 WO PCT/JP2014/066698 patent/WO2014208549A1/en active Application Filing
- 2014-06-24 US US14/898,572 patent/US20160115420A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1711345A (en) * | 2002-11-05 | 2005-12-21 | 新日本石油株式会社 | Lubricating oil |
| CN101883839A (en) * | 2008-01-15 | 2010-11-10 | 新日本石油株式会社 | Lubricant composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105143419A (en) | 2015-12-09 |
| US20160115420A1 (en) | 2016-04-28 |
| WO2014208549A1 (en) | 2014-12-31 |
| JP2015004028A (en) | 2015-01-08 |
| JP6134212B2 (en) | 2017-05-24 |
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