CN101868523A - Hydraulic oil for use in construction machinery - Google Patents
Hydraulic oil for use in construction machinery Download PDFInfo
- Publication number
- CN101868523A CN101868523A CN200880109051A CN200880109051A CN101868523A CN 101868523 A CN101868523 A CN 101868523A CN 200880109051 A CN200880109051 A CN 200880109051A CN 200880109051 A CN200880109051 A CN 200880109051A CN 101868523 A CN101868523 A CN 101868523A
- Authority
- CN
- China
- Prior art keywords
- hydraulic efficiency
- oil
- ester
- efficiency oil
- methyl
- 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
- 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
-
- 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
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
-
- 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
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/08—Amides
-
- 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
- C10M2223/045—Metal containing thio derivatives
-
- 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
-
- 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
- C10N2030/06—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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
-
- 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
- C10N2040/25—Internal-combustion engines
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
Hydraulic oil for use in construction machinery, wherein the hydraulic oil comprises a poly(meth)acrylate of weight average molecular weight in the range of from 30,000 to 100,000 in a highly refined base oil but does not incorporate an oiliness agent, and wherein the kinetic viscosity at 60 DEG C is in the range of from 25 to 60 mm<2>/s, the kinetic viscosity at 80 DEG C is in the range of from 15 to 34 mm<2>/s, the viscosity index is in the range of from 200 to 220, and the low temperature cranking viscosity at 25 DEG C is in the range of from 1000 to 8000 mPa.s. The hydraulic oil of the present invention not only has a high kinetic viscosity in the high-temperature domain even though the incorporation of an oiliness agent is omitted, and can thereby effect satisfactory operation efficiently and which has excellent braking characteristics, but which also has a low viscosity in the low-temperature domain and so has excellent low-temperature performance.
Description
Technical field
The present invention relates to be used for the hydraulic efficiency oil of building machinery and more specifically relate to the hydraulic efficiency installation that is used for building machinery to drive the hydraulic efficiency installation hydraulic efficiency oil of (comprising fluid pressure drive device for example oil motor and hydraulic cylinder in the building machinery).
Background technology
Building machinery uses hydraulic efficiency installation, and described hydraulic efficiency installation comprises fluid pressure drive device for example oil motor and hydraulic cylinder.In these building machineries, will move the hydraulic efficiency oil that hydro-pump pressurizes by engine and be delivered to fluid pressure drive device for example oil motor and hydraulic cylinder or other hydraulic efficiency installation, thus the operation hydraulic efficiency installation.In comprising the hydraulic efficiency installation of these fluid pressure drive devices, form hydraulic circuit, from the hydro-pump that utilizes engine operation with by being provided with for example path of pilot valve, control valve, eduction valve, stopper etc. of hydraulic efficiency installation, lead to fluid pressure drive device for example oil motor or hydraulic cylinder.
Comprise the hydraulic efficiency installation of these fluid pressure drive devices owing to operate under about 60-80 ℃ high temperature for example by the heat of engine or dynamical element transmission or the heat that in hydraulic efficiency installation or pipeline, produces by pressurization, friction, pipe resistance etc. and this requires the hydraulic efficiency oil can valid function in this temperature range.From the angle of protecting the global environment, conserve energy and improve the efficient of hydraulic efficiency oil in the hydraulic efficiency installation importantly.How many research and development prepare on the basis of hydraulic efficiency oil is carried out at conserve energy.Idea is to obtain to have more low viscous hydraulic efficiency oil and obtain lower friction by being blended into oiliness improver.But when the hydraulic efficiency oil that is used for building machinery obtained than low viscosity, the internal leakage in hydro-pump and control valve etc. increased, and made to be unfavorable for energy saving.
In addition,, utilize the frictional coefficient in the stopper of wet dish to reduce in the building machinery, make trainstop and parking brake function reduce, and this is disadvantageous to operating characteristics when when mixing oiliness improver and reduce friction.That is to say to have turning unit for example in the building machinery of hydraulic excavator and parking brake, the turning unit of the stopper that utilizes wet dish and use rotary motor etc. matches and CD-ROM drive motor.Use the stopper of these wet dishes to be endowed lubricating quality by hydraulic efficiency oil, if but the frictional coefficient of hydraulic efficiency oil reduces, then the function of trainstop and parking brake will affect adversely and exist the possibility of the matters of aggravation that causes by the turning motion that can not stop or by the landing slope.
In addition, because when construction machine age overnight that will be at low temperatures with when approximately for example-30 starting in cold or in the cold zone to-20 ℃ the low temperature range, they must have low viscosity at low temperatures.Therefore the hydraulic efficiency oil that is used for this class hydraulic efficiency installation must have and is suitable for from being low to moderate-30 to-20 ℃ temperature to the viscosity characteristics of about 60-80 ℃ pyritous wide temperature range.
Up to now, Japan special permission publication H9-111277 (1997) has proposed to be used for the hydraulic efficiency oil of this class hydraulic efficiency installation, described hydraulic efficiency oil has mixed amido antioxidant, phenol antioxidant, phosphoric acid ester and fatty acid amide or polyol ester and has wherein specified and can add poly-(methyl) acrylate as viscosity index improver in base oil.The hydraulic efficiency oil of Japan special permission publication H9-111277 (1997) proposes as hydraulic efficiency oil, its premature aging that has not only effectively stopped hydraulic efficiency oil producing with the mud relevant with elevated pressures and therefore can use in long-time section, but also has eliminated the flutter phenomenon in the cylinder and therefore shown the stable operation feature.
But the viscosity that the hydraulic efficiency oil of Japan special permission publication H9-111277 (1997) is devoted to eliminate premature aging and mud generation and cylinder flutter phenomenon and does not have to consider to have regulation in from low temperature to about 60-80 ℃ pyritous wide temperature range.Japan special permission publication H9-111277 (1997) also by add oiliness improver for example fatty acid amide stop cylinder flutter phenomenon reduced frictional coefficient and not the brake performance when utilizing wet dish enough measures are proposed.Japan special permission publication H9-111277 (1997) mentions and can mix poly-(methyl) acrylate as viscosity index improver, but it does not specifically described.
Japan special permission publication 2007-91768 has proposed to be used for the hydraulic efficiency oil of door closer, described hydraulic efficiency oil in the alkyl base oil of forming by mineral oil or alkyl synthetic oil, mixed gather (methyl) acrylate as viscosity index improver and high alkaline calcium sulfonate as lubricity improver.Japan special permission publication 2007-91768 mentions and preferably mixes oiliness improver for example lipid acid, fatty alcohol, fatty acid ester or fatty oil and comprised these oiliness improvers in an embodiment.
But the door closer of Japan special permission publication 2007-91768 requires the function of the opening the door reposefully and closing the door by allow the hole that hydraulic efficiency oil is provided with in by cylinder component under base runoff.For this reason, the hydraulic efficiency oil that is used for door closer must have high viscosity index (HVI), thereby no matter any variation takes place temperature the speed of opening the door or close the door can both be maintained under the maintenance level, has therefore obtained foregoing.Implication with hydraulic efficiency oil of high viscosity index (HVI) is that it all has certain kinematic viscosity under low temperature and high temperature.In Japan special permission publication 2007-91768, the viscosity index of hydraulic efficiency oil is not less than 250 and wishes and preferably be not less than 270.
In Japan special permission publication 2007-91768, hydraulic efficiency oil for the high viscosity index (HVI) that obtains to have this grade, mix poly-(methyl) acrylate as viscosity index improver, but the weight-average molecular weight of poly-(methyl) acrylate that mixes is set at 50,000-700 herein, 000, though preferred 100,000-500,000 and particularly 150,000-400,000.In an embodiment, having used molecular weight is 250,000-550,000 example.But when adding poly-(methyl) acrylate of high-molecular weight like this, become Tai Gao and can not obtain operating characteristics under low-temperature performance and the high temperature fully of viscosity index.Because also must mix oiliness improver, wherein the problem of Cun Zaiing is that the brake performance when utilizing wet dish does not propose enough measures.
Japan special permission publication 2007-106878 has described the hydraulic drive oil that is used as hydraulic efficiency oil in door closer, and the kinematic viscosity of described hydraulic drive oil under 40 ℃ is 22-95mm
2/ s, the kinematic viscosity under 100 ℃ is 10-30mm
2/ s, pour point are-10 ℃ or lower, and the CCS viscosity under-20 ℃ is not higher than 2500mPa.s and flash-point is not less than 140 ℃, and the kinematic viscosity that described hydraulic drive oil contains under 40 ℃ is 2-20mm
2/ s and viscosity index are not less than base oil and poly-(methyl) acrylate of 50.The weight-average molecular weight of poly-(methyl) acrylate is 150,000-700, and 000, but preferred 200,000-500,000, therefore almost can make and specially permit the identical comment of publication 2007-91768 at Japan.
Prior art comprised and will mix poly-(methyl) acrylate as other composition of viscosity index improver and other additive hydraulic efficiency oil as hydraulic efficiency installation in base oil, is to be used for improving viscosity index as far as possible practically and therefore to reduce kinematic viscosity under the low temperature and difference between the kinematic viscosity under the high temperature but wherein add viscosity index improver.At this purpose, poly-(methyl) acrylate of high-molecular weight is added as viscosity index improver, therefore in these cases, also there are those problems that are similar in 3 pieces of patent documentations mentioned above.
Purport of the present invention is by providing hydraulic efficiency oil to solve aforementioned prior art problems, even described hydraulic efficiency oil not only also has the high kinematic viscosity in high temperature range and therefore can realize gratifying operation effectively and have good braking features under the condition of not mixing oiliness improver, but also have the low viscosity in low temperature range and therefore have good low-temperature performance.
Summary of the invention
The present invention is the hydraulic efficiency oil that is used for building machinery, the weight-average molecular weight that wherein said hydraulic efficiency oil is included in the highly refined base oil is 30,000-100,000 poly-(methyl) acrylate but do not mix oiliness improver and wherein the kinematic viscosity under 60 ℃ be 25-60mm
2/ s, the kinematic viscosity under 80 ℃ is 15-34mm
2/ s, viscosity index is that 200-220 and the cold-starting viscosity under-25 ℃ are 1000-8000mPa.s.
Embodiment
Hydraulic efficiency oil of the present invention be used for building machinery hydraulic efficiency installation hydraulic efficiency oil and comprise for example hydraulic efficiency oil of the hydraulic efficiency installation of oil motor and hydraulic cylinder of fluid pressure drive device for being used to drive.Among the present invention, the implication of building machinery is to be used for the machinery that the building industry neutralization cooperates with hydraulic efficiency installation.As these mechanical examples, that can mention has: excavation machinery is excavator for example; Loader is wheel loader for example; Unloading and mechanically moving be dozer for example; Mechanically moving is for example rough terrain crane and winch of Dump Truck, rough terrain lifting machine and forklift, crane for example; The basis processor is hydraulic breaker for example; The boring and for example IronMole of machinery that holes; Material-gathering device and circulation machinery is the self-driving type crusher for example; Level road and subgrade machine be motor-driven grader for example; With compact machine street roller for example, for example asphalt finisher of machinery of paving the way; With road maintenance machinery snowplow for example.As the example of hydraulic efficiency installation, that can mention has: hydro-pump is piston pump for example; Fluid pressure drive device is oil motor and hydraulic cylinder for example; Hydrauliccontrol valve is pressure controlled valve and direction control valve for example; The for example wet pan brake of stopper; With other machinery that utilizes the oil pressure that drives oil.
In order to realize the efficient of energy saving and Geng Gao, by suppressing the internal leakage in hydro-pump and the control valve, with hydraulic efficiency oil of the present invention kinematic viscosity during operation promptly the kinematic viscosity under 60 ℃ and 80 ℃ be set at and be higher than up to now those.In order to increase the kinematic viscosity of operating period, among the present invention, in base oil (for highly refined base oil), mix poly-(methyl) acrylate as viscosity index improver.
When the kinematic viscosity in the high temperature range so is set in high-level following time, startup character in the low temperature range is impaired, therefore the present invention is reduced in cold-starting viscosity under-25 ℃ by mix specific poly-(methyl) acrylate as viscosity index improver, makes viscosity index become 200-220.Therefore can reduce low-temperature working viscosity and other low-temperature performance level.
For the mineral oil that is used for base oil of the present invention, may uses being called highly refined base oil and synthetic oil and particularly may be separately or use with form of mixtures and to belong to the classify base oil of I class, II class and III class of API (API) base oil.The element sulfur content of base oil used herein should be lower than 0.8 quality % and preferably be lower than 0.5 quality %.In addition, density should be 0.8-0.9g/cm
3Aromaticity content should not be higher than 5 quality % and preferably not be higher than 3 quality %.
I class base oil comprises the paraffinic hydrocarbons mineral oil that for example for example the lubricating oil distillate that is obtained by crude oil atmospheric distillation is carried out solvent treatment, hydrofining and dewaxing acquisition by the appropriate combination of method for refining.Viscosity index should be 80-120 and preferred 95-110.Kinematic viscosity under 40 ℃ is 2-150mm preferably
2/ s and even more preferably 8-100mm
2/ s.In addition, total sulfur content should be lower than 0.8 quality % and preferably be lower than 0.5 quality %.Total nitrogen content should be lower than 50ppm and preferably be lower than 25ppm.In addition, should use aniline point to be 80-150 ℃ of oil with preferred 90-120 ℃.
II class base oil comprises the paraffinic hydrocarbons mineral oil that for example for example the lubricating oil distillate that is obtained by crude oil atmospheric distillation is carried out hydrofining and dewaxing acquisition by the appropriate combination of method for refining.For example the total sulfur content of Gulf Company method purified II class base oil is lower than 10ppm and aromaticity content is not higher than 5% by hydrofinishing process, therefore is suitable for the present invention.The viscosity of these base oils is not particularly limited, but viscosity index should be 80-120 and preferred 100-120.Kinematic viscosity under 40 ℃ is 2-150mm preferably
2/ s and even more preferably 8-100mm
2/ s.In addition, total sulfur content should be lower than 300ppm, preferably be lower than 200ppm and even more preferably less than 10ppm.Total nitrogen content should be lower than 10ppm and preferably be lower than 1ppm.In addition, should use aniline point to be 80-150 ℃ of oil with preferred 100-135 ℃.
In the base oil that is commonly referred to III class base oil and II+ class base oil, the example that is fit to is by the paraffinic hydrocarbons mineral oil that the lubricating oil distillate that is obtained by crude oil atmospheric distillation is carried out height hydrofining preparation, replaces the Isodewax method purified base oil of the wax of being produced by wax fractionation process and by Mobil wax isomerization method purified base oil by dewaxing with isoparaffin.They comprise that also rule according to the NAD (National Advertising Division) that is responsible for U.S.'s advertisement ruling can be called those of " synthetic oil ".
The viscosity of these base oils is not particularly limited, but viscosity index should be 95-145 and preferred 100-140.Kinematic viscosity under 40 ℃ should be 2-150mm
2/ s and even more preferably 8-100mm
2/ s.In addition, total sulfur content should be 0-100ppm and preferably is lower than 10ppm.Total nitrogen content should be and is lower than 10ppm and preferably is lower than 1ppm.In addition, also can use aniline point to be 80-150 ℃ of oil with preferred 110-135 ℃.(aforementioned II+ class oil belongs to the II class)
In addition, by the Fischer-Tropsch process synthetic GTL (gas is to liquid) that conversion of natural gas is become liquid fuel have with by crude oil purified mineral oil based oil phase than low-down sulphur content and aromaticity content and have very high paraffinic components than and therefore have a very good oxidative stability, because they also have extremely low vaporization losses, so they are suitable as the base oil that belongs to the III class.The viscosity characteristics of these GTL base oils is not particularly limited, but viscosity index is 130-180 and preferred 140-175 usually.In addition, the kinematic viscosity under 40 ℃ should be 2-150mm
2/ s and more preferably 5-100mm
2/ s.Usually, total sulfur content also should be lower than 10ppm and total nitrogen content is lower than 1ppm.The commercial embodiments of this class GTL base oil is Shell XHVI (registered trademark).
The blend ratio of aforementioned base oil in hydraulic efficiency oil of the present invention is not particularly limited, but is preferably 70-90 quality % and more preferably 75-85 quality %.
Poly-(methyl) acrylate that adds aforementioned base oil is used as viscosity index improver and comprises polyacrylic ester or polymethacrylate.Preferred poly-(methyl) acrylate is the polymkeric substance that contains the polymkeric substance of one or both or more kinds of component units by following general formula (1) expression or contain these component units and other component units.
In the general formula 1, R
1Expression hydrogen or methyl, preferable methyl.R
2The expression contain 1-30 carbon alkyl or by-(R)
aThe group that-E represents, wherein R is the alkylidene group that contains 1-30 carbon, E represents to contain the amine residue of 1-2 nitrogen-atoms and 0-2 Sauerstoffatom or heterocycle residue and a and represents 0 or 1 integer.
As by R
2The example of the alkyl that contains 1-30 carbon of expression, that can mention has: methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, eicosyl, docosyl, tetracosyl, ceryl and octacosyl (these alkyl can be straight or brancheds).
As the example of the alkylidene group of being represented by R that contains 1-30 carbon, that can mention has: methylene radical, ethylidene, propylidene, butylidene, pentylidene, hexylidene, inferior heptyl, octylene, nonamethylene, inferior decyl, inferior undecyl, inferior dodecyl, inferior tridecyl, inferior tetradecyl, inferior pentadecyl, inferior hexadecyl, inferior heptadecyl and inferior octadecyl (these alkylidene groups can be straight or brancheds).
In addition, if E is the amine residue, then as having that its specific examples can be mentioned: dimethylamino, diethylamino, dipropyl amino, dibutylamino, anilino, toluino, xylidino, acetylamino and benzoyl-amido.If E is a heterocycle residue, then as having that its specific examples can be mentioned: morpholino base, pyrryl, pyrrolinyl, pyridyl, picolyl, pyrrolidyl, piperidyl, quinonyl, pyrrolidone-base (pyrrolidonyl), pyrrolidone-base (pyrrolidono), imidazolinyl (imidazolino) and pyrazinyl (pyrazino).
The molecular weight of poly-(methyl) acrylate (weight-average molecular weight of measuring by GPC) should be 30,000-100, and 000, but preferred 30,000-70,000.Can be used as it is commercial poly-(methyl) acrylate.In addition, poly-(methyl) acrylate that adds the hydraulic efficiency oil of this paper as viscosity index improver can mix separately or as two or more mixture of polymers.Consider and handle and the solvability in lubricant base, be used for dilution (usually be about 10-80 quality %) form preparation and the sale of poly-(methyl) acrylate of additive with mineral oil.
In hydraulic efficiency oil of the present invention, the incorporation of poly-(methyl) acrylate makes that the kinematic viscosity under 60 ℃ is 25-60mm
2/ s and preferred 28-50mm
2/ s, the kinematic viscosity under 80 ℃ is 15-34mm
2/ s and preferred 17-30mm
2/ s, viscosity index is 200-220 and preferred 205-215, is that 1000-8000mPa.s makes that with preferred 1000-5000mPa.s and in addition preferred incorporation the kinematic viscosity under 40 ℃ is 45-150mm in the viscosity under-25 ℃
2/ s and preferred 50-100mm
2/ s.Incorporation will change according to amount, viscosity and the further feature of base oil, the molecular weight of poly-(methyl) acrylate and the amount of thinner, but best usually is to be set in 10-30 quality % as the amount of gathering (methyl) acrylate of additive (comprising thinner), with preferred 15-25 quality %, based on hydraulic efficiency oil total amount meter.The thinner that adds hydraulic efficiency oil will be contained in the base oil and the ratio of pure poly-(methyl) acrylate of mixing should be 1-24 quality % and preferred 1.5-20 quality %, based on hydraulic efficiency oil total amount meter.
Hydraulic efficiency oil of the present invention is the hydraulic efficiency oil of oiliness additive not substantially.Oiliness improver is the oiliness organic compound that adds as the means that reduce frictional coefficient in the prior art in the hydraulic efficiency oil.They are the compound acid amides of lipid acid, fatty acid ester, polyol ester, amine, acid amides and polyamines for example that reduce frictional coefficient.By in hydraulic efficiency oil, not mixing these oiliness improvers, may strengthen the damping characteristic of stopper.But allow in the base oil that forms hydraulic efficiency oil, poly-(methyl) acrylate and other additive, to start anew just to contain micro-oiliness organic compound.
In hydraulic efficiency oil of the present invention, except aforementioned base oil and polymethacrylate, may mix other additives suitable and needs.That can mention has: antioxidant, metal passivator, extreme pressure agent, defoamer, viscosity index improver, pour point depressant, detergent-dispersant additive, rust-preventive agent, emulsion splitter and as other additives known of lubricating oil additive.The amount of these additives should not be higher than 10 quality % and preferably not be higher than 5 quality % in the blend, based on hydraulic efficiency oil total amount meter.
For being used for antioxidant of the present invention, use for reality, be preferred for those and having of can mentioning of lubricating oil: phenol antioxidant, ah aromatic amihe-based antioxidant, thio-based antioxidants and phosphorus base antioxidant.These antioxidants can be used alone or as a mixture in the form of use with the amount of 0.01-5 quality %, based on hydraulic efficiency oil total amount meter.
Example as aforementioned ah aromatic amihe-based antioxidant, that can mention has: dialkyl group-pentanoic is p for example, p '-dioctyl-pentanoic (Nonflex OD-3, produce by Seiko Chemical Ltd), p, p '-two-Alpha-Methyl phenmethyl-pentanoic and N-p-butyl phenyl-N-p '-octyl group aniline, the monoalkyl pentanoic is list-tertiary butyl pentanoic and single octyl diphenylamine for example, two (dialkyl phenyl organic) amine for example two (2,4-diethyl phenyl) amine and two (2-ethyl-4-nonyl phenyl) amine, alkyl phenyl-naphthalidine is octyl group-phenyl-1-naphthylamine and uncle's N-dodecylphenyl-naphthalidine for example, naphthalidine, aryl-naphthylamines is phenyl-1-naphthylamine for example, phenyl-2-naphthylamines, N-hexyl phenyl-2-naphthylamines and N-octyl phenyl-2-naphthylamines, phenylenediamine is N for example, N '-di-isopropyl-p-phenylenediamine and N, N '-phenylbenzene-p-phenylenediamine, and thiodiphenylamine Phenothiazine (producing) and 3 for example by Hodogaya Chemical Ltd., 7-dioctyl thiodiphenylamine.
Phenol antioxidant comprises: 2-tert-butyl phenol, the 2-tertiary butyl-4-sylvan, the 2-tertiary butyl-5-sylvan, 2,4-two-tert-butyl phenol, 2,4-dimethyl-6-tert-butyl phenol, the 2-tertiary butyl-4-methoxyl group phenol, the 3-tertiary butyl-4-methoxyl group phenol, 2,5-two-Tert. Butyl Hydroquinone (Antage DBH, produce by Kawaguchi Chemical Industry Co.Ltd.), 2,6-two-tert-butyl phenol, 2,6-two-tertiary butyl-4-alkylphenol for example 2,6-two-tertiary butyl-4-sylvan and 2,6-two-tertiary butyl-4-ethyl phenol, with 2,6-two-tertiary butyl-4-alkoxyl group phenol for example 2,6-two-tertiary butyl-4-methoxyl group phenol and 2,6-two-tertiary butyl-4-oxyethyl group phenol.
In addition, have 3,5-two-tertiary butyl-4-hydroxy phenmethyl sulfydryl-octyl group acetic ester, alkyl-3-(3,5-two-tert-butyl-hydroxy phenyl) propionic ester Octadecane base-3-(3 for example, 5-two-tert-butyl-hydroxy phenyl) propionic ester (Yoshinox SS, produce by Yoshitomi Fine Chemicals Ltd.), dodecyl-3-(3,5-two-tert-butyl-hydroxy phenyl) propionic ester and 2 '-ethylhexyl-3-(3,5-two-tert-butyl-hydroxy phenyl) propionic ester, phenylpropionic acid 3,5-two (1,1-dimethyl-ethyl)-4-hydroxyl-C7-C9 side chain alkyl ester (Irganox L135, produce by Ciba SpecialtyChemicals Ltd.), 2,6-two-tertiary butyl-alpha-alpha-dimethyl amino-p-cresols, with 2,2 '-methylene-bis (4-alkyl-6-tert-butyl phenol) for example 2,2 '-methylene-bis (4-methyl-6-tert butyl phenol) (Antage W-400, produce by Kawaguchi Chemical Industry Ltd.) and 2,2 '-methylene-bis (4-ethyl-6-tert-butyl phenol) (Antage W-500 is produced by Kawaguchi ChemicalIndustry Ltd).
In addition, there is bis-phenol for example 4,4 '-two (3-methyl-6-tert butyl the phenol) (AntageW-300 of butylidene, produce by Kawaguchi Chemical Industry Ltd.), 4,4 '-methylene-bis (2,6-two-tert-butyl phenol) (Ionox 220AH, produce by Shell Japan Ltd.), 4,4 '-two (2,6-two-tert-butyl phenol), 2,2-(two-p-hydroxy phenyl) propane (dihydroxyphenyl propane, produce by Shell Japan Ltd.), 2, two (3, the 5-two-tert-butyl-hydroxy phenyl) propane of 2-, 4,4 '-cyclohexylene two (2, the 6-tert-butyl phenol), 1, the 6-hexylene glycol is two, and [3-(3,5-two-tert-butyl-hydroxy phenyl) propionic ester] (Irganox L109 is produced by Ciba Specialty Chemicals Ltd.), (Tominox 917 for triethylene glycol two [3-(3-tertiary butyl-4-hydroxy-5-aminomethyl phenyl) propionic ester], produce by Yoshitomi Fine Chemicals Ltd.), 2,2 '-sulfo--[diethyl-3-(3,5-two-tert-butyl-hydroxy phenyl) propionic ester (Irganox L115, produce by Ciba Specialty ChemicalsLtd.), 3,9-pair 1,1-dimethyl-2-[3-(3-tertiary butyl-4-hydroxy-5-aminomethyl phenyl) propionyloxy] and ethyl } 2,4,8,10-four oxaspiros [5,5] undecane (Sumilizer GA80, produce by Sumitomo Chemicals), 4,4 '-thiobis (3-methyl-6-tert butyl phenol) (AntageRC is produced by Kawaguchi Chemical Industry Ltd.) and 2,2 '-thiobis (4,6-two-tertiary butyl-Resorcinol).That can also mention has: four [methylene radical-3-(3,5-two-tert-butyl-hydroxy phenyl) propionic ester] methane (Irganox L101, produce by Ciba Specialty ChemicalsLtd.), 1,1, (Yoshinox 930 for butane for 3-three (2-methyl-4-hydroxyl-5-tert-butyl-phenyl), produce by Yoshitomi Fine Chemicals Ltd.), 1,3,5-trimethylammonium-2,4,6-three (3,5-two-tertiary butyl-4-hydroxy phenmethyl) benzene (Ionox 330, produced by Shell Japan Ltd.), two-[3,3 '-two-(4 '-hydroxyl-3 '-tert-butyl-phenyl) butyric acid] diol ester, with polyphenol for example 2-(3 ', 5 '-two-tert-butyl-hydroxy phenyl) methyl-6-tert butyl phenol and 2,6 methyl-4-(2 ' ", 4 " two-tertiary butyl-3 "-hydroxy phenyls) ;-two (2 '-hydroxyl-3 '-tertiary butyl-5 '-methyl-phenmethyl)-the 4-sylvan, and phenol-aldehyde condensate for example p-tert-butyl phenol and the condenses of formaldehyde and the condenses of p-tert-butyl phenol and acetaldehyde.
Example as thio-based antioxidants, that can mention has: dialkyl sulfide is two (dodecyl) sulfide and two (octadecyl) sulfide for example, and thiodipropionate is two (dodecyl) thiodipropionate, two (octadecyl) thiodipropionate, two (tetradecyl) thiodipropionates and dodecyl octadecyl thiodipropionate and 2-mercaptobenzimidazole for example.
Example as phosphorus base antioxidant, that can mention has: triarylphosphite is for example three (octadecyl) phosphorous acid esters and three decyl phosphorous acid esters and three (dodecyl) trithiophosphite of triphenyl phosphorous acid ester and trimethylphenyl phosphorous acid ester and trialkyl phosphite for example.
Can comprise with the metal passivator of hydraulic efficiency oil blend of the present invention: benzotriazole and benzotriazole derivatives, they are: 4-alkyl-benzotriazole is 4-methyl-benzotriazole and 4-ethyl-benzotriazole for example, 5-alkyl-benzotriazole is 5-methyl-benzotriazole and 5-ethyl-benzotriazole for example, 1-alkyl-benzotriazole is 1-dioctyl amino methyl-2 for example, 3-benzotriazole and 1-alkyl-tolytriazole (tolutriazole) be 1-dioctyl amino methyl-2 for example, the 3-tolytriazole; And benzoglyoxaline and benzimidizole derivatives, they are: 2-(alkyl dithio)-benzoglyoxaline is 2-(octyl group dithio)-benzoglyoxaline for example, 2-(decyl dithio)-benzoglyoxaline and 2-(dodecyl dithio)-benzoglyoxaline, reach 2-(alkyl dithio) Vermox (toluimidazole) for example 2-(octyl group dithio)-Vermox, 2-(decyl dithio)-Vermox and 2-(dodecyl dithio) Vermox.
That can also mention has: indazole, indazole derivatives, and they are: toluene indazole (toluindazole) is 4-alkyl-indazole and 5-alkyl-indazole for example; Benzothiazole and benzothiazole derivant, they are 2-mercaptobenzothiazole derivative (Thiolite B-3100, produce by ChiyodaChemical Industries Ltd.), 2-(alkyl dithio) benzothiazole is 2-(hexyl dithio) benzothiazole and 2-(octyl group dithio) benzothiazole for example, 2-(alkyl dithio) toluene thiazole (toluthiazole) is 2-(hexyl dithio) toluene thiazole and 2-(octyl group dithio) toluene thiazole for example, 2-(N, N-dialkyl dithio carbamyl)-benzothiazole 2-(N for example, N-diethyl-dithio carbamyl)-benzothiazole, 2-(N, N-dibutyl dithio carbamyl)-benzothiazole and 2-(N, N-dihexyl dithio carbamyl)-benzothiazole, and 2-(N, N-dialkyl dithio carbamyl)-toluene thiazole 2-(N for example, N-diethyl-dithio carbamyl)-the toluene thiazole, 2-(N, N-dibutyl dithio carbamyl)-toluene thiazole and 2-(N, N-dihexyl dithio carbamyl)-toluene thiazole.In addition, that can mention has a: benzoxazole derivative, they are: 2-(alkyl dithio) benzoxazole for example 2-(((dodecyl) benzoxazole, or they are: (alkyl dithio) Jia Ben oxazole (toluoxazole) is 2-(octyl group dithio) Jia Ben oxazole, 2-(decyl dithio) Jia Ben oxazole and 2-(dodecyl) Jia Ben oxazole for example for 2-for decyl dithio) benzoxazole and 2-for octyl group dithio) benzoxazole, 2-; Thiadiazoles derivative, they are: 2, two (the alkyl dithio)-1 of 5-, 3,4-thiadiazoles for example 2, two (the heptyl dithio)-1 of 5-, 3, the 4-thiadiazoles, 2, two (the nonyl dithio)-1 of 5-, 3, the 4-thiadiazoles, 2, two (the dodecyl dithio)-1 of 5-, 3,4-thiadiazoles and 2, two (the octadecyl dithio)-1 of 5-, 3, the 4-thiadiazoles, 2, the two (N of 5-, N-dialkyl dithio carbamyl)-1,3,4-thiadiazoles for example 2, two (N, the N-diethyl-dithio carbamyls)-1,3 of 5-, the 4-thiadiazoles, 2, two (N, the N-dibutyl dithio carbamyls)-1 of 5-, 3,4-thiadiazoles and 2, the two (N of 5-, N-dioctyl dithio carbamyl)-1,3,4-thiadiazoles and 2-N, N-dialkyl dithio carbamyl-5-sulfydryl-1,3, the 4-thiadiazoles is 2-N for example, N-dibutyl dithio carbamyl-5-sulfydryl-1,3,4-thiadiazoles and 2-N, N-dioctyl dithio carbamyl-5-sulfydryl-1,3, the 4-thiadiazoles; And triazole derivative, they are 1-alkyl-2 for example, the 4-triazole is 1-two-octyl group amino methyl-2 for example, the 4-triazole.
These metal passivators can use with 0.01-0.5 quality % separately or as mixture, based on hydraulic efficiency oil total amount meter.
Phosphorus compound can be added hydraulic efficiency oil of the present invention as extreme pressure agent.By so doing, can further provide wear-resisting property and extreme pressure character.As the example that is suitable for phosphorus compound of the present invention, that can mention has: the amine salt of phosphoric acid ester, phosphate ester acid, phosphate ester acid, chloro phosphoric acid ester, phosphorous acid ester, thiophosphatephosphorothioate, zinc dithiophosphate, phosphorus-containing carboxylic acid and phosphorus-containing carboxylic acid ester.These phosphorus compounds can use with 0.01-2 quality % separately or as mixture, based on hydraulic efficiency oil total amount meter.
As the example of aforementioned phosphoric acid ester, that can mention has: tributyl phosphate, TNPP tri n pentyl phosphate, tri hexyl phosphate, THP triheptylphosphate, trioctyl phosphate, trinonyl phosphate, tridecyl phosphate, tricresyl phosphate (undecyl) ester, tricresyl phosphate (dodecyl) ester, tricresyl phosphate (tridecyl) ester, tricresyl phosphate (tetradecyl) ester, tricresyl phosphate (pentadecyl) ester, tricresyl phosphate (hexadecyl) ester, tricresyl phosphate (heptadecyl) ester, tricresyl phosphate (octadecyl) ester, trioleyl phosphate, Triphenyl phosphate, tricresyl phosphate (isopropyl phenyl) ester, the tricresyl phosphate allyl ester, lindol, tricresyl phosphate (xylyl) ester, tolyl diphenyl phosphoester and xylyl diphenyl phosphoester.
As the specific examples of aforementioned phosphate ester acid, that can mention has: acid mono phosphoric acid ester butyl ester, acid mono phosphoric acid ester amyl group ester, acid mono phosphoric acid ester polyhexamethylene, acid mono phosphoric acid ester heptyl ester, acid mono phosphoric acid ester nonyl ester, acid mono phosphoric acid ester decyl ester, acid mono phosphoric acid ester undecyl ester, acid mono phosphoric acid ester dodecyl ester, acid mono phosphoric acid ester tridecyl ester, acid mono phosphoric acid ester tetradecyl ester, acid mono phosphoric acid ester pentadecyl ester, acid mono phosphoric acid ester cetyl ester, acid mono phosphoric acid ester heptadecyl ester, acid mono phosphoric acid ester stearyl, acid mono phosphoric acid ester oil base ester, acid di(2-ethylhexyl)phosphate butyl ester, acid di(2-ethylhexyl)phosphate amyl group ester, acid di(2-ethylhexyl)phosphate polyhexamethylene, acid di(2-ethylhexyl)phosphate heptyl ester, acid di(2-ethylhexyl)phosphate octyl group ester, acid di(2-ethylhexyl)phosphate nonyl ester, acid di(2-ethylhexyl)phosphate decyl ester, acid di(2-ethylhexyl)phosphate (undecyl) ester, acid di(2-ethylhexyl)phosphate (dodecyl) ester, acid di(2-ethylhexyl)phosphate (tridecyl) ester, acid di(2-ethylhexyl)phosphate (tetradecyl) ester, acid di(2-ethylhexyl)phosphate (pentadecyl) ester, acid di(2-ethylhexyl)phosphate (hexadecyl) ester, acid di(2-ethylhexyl)phosphate (heptadecyl) ester, acid di(2-ethylhexyl)phosphate (octadecyl) ester and acid di(2-ethylhexyl)phosphate oil base ester.
As the example of the amine salt of aforementioned phosphate ester acid, that can mention has: the methylamine of the phosphate ester acid of before mentioning, ethylamine, propyl group amine, butylamine, amylamine, hexyl amine, heptyl amine, octyl amine, dimethyl amine, diethylamide, dipropylamine, dibutylamine, diamyl amine, dihexyl amine, diheptyl amine, dioctylamine, Trimethylamine, triethylamine, tripropylamine, tributylamine, three amylamines, three hexyl amines, three heptyl amine and trioctylphosphine amine salt.
As the example of aforementioned phosphorous acid ester, that can mention has: phosphorous acid dibutyl ester, phosphorous acid diamyl ester, phosphorous acid dihexyl ester, phosphorous acid diheptyl ester, phosphorous acid dioctyl ester, phosphorous acid dinonyl ester, phosphorous acid didecyl ester, phosphorous acid two (undecyl) ester, phosphorous acid two (dodecyl) ester, phosphorous acid two oil base esters, the phosphorous acid diphenyl, phosphorous acid xylyl ester, the tricresyl phosphite butyl ester, tricresyl phosphite amyl group ester, the tricresyl phosphite polyhexamethylene, tricresyl phosphite heptyl ester, tricresyl phosphite octyl group ester, tricresyl phosphite nonyl ester, the tricresyl phosphite decyl ester, tricresyl phosphite (undecyl) ester, tricresyl phosphite (dodecyl) ester, tricresyl phosphite oil base ester, tricresyl phosphite phenylester and tricresyl phosphite tolyl ester.
As the example of aforementioned thiophosphatephosphorothioate, that can specifically mention has: the tri o cresyl thiophosphate butyl ester, tri o cresyl thiophosphate amyl group ester, the tri o cresyl thiophosphate polyhexamethylene, tri o cresyl thiophosphate heptyl ester, thiophosphoric acid trioctylphosphine ester, tri o cresyl thiophosphate nonyl ester, the tri o cresyl thiophosphate decyl ester, tri o cresyl thiophosphate (undecyl) ester, tri o cresyl thiophosphate (dodecyl) ester, tri o cresyl thiophosphate (tridecyl) ester, tri o cresyl thiophosphate (tetradecyl) ester, tri o cresyl thiophosphate (pentadecyl) ester, tri o cresyl thiophosphate (hexadecyl) ester, tri o cresyl thiophosphate (heptadecyl) ester, tri o cresyl thiophosphate (octadecyl) ester, tri o cresyl thiophosphate oil base ester, the tri o cresyl thiophosphate phenylester, thiophosphoric acid trimethylphenyl ester, tri o cresyl thiophosphate (xylyl) ester, tolyl phenylbenzene thiophosphatephosphorothioate, xylyl phenylbenzene thiophosphatephosphorothioate, tri o cresyl thiophosphate (n-propyl phenyl) ester, tri o cresyl thiophosphate (isopropyl phenyl) ester, tri o cresyl thiophosphate (n-butylphenyl) ester, tri o cresyl thiophosphate (isobutyl phenenyl) ester, tri o cresyl thiophosphate (secondary butyl phenenyl) ester and tri o cresyl thiophosphate (tert-butyl-phenyl) ester.Can also use the mixture of these materials.
As the example of aforementioned zinc dithiophosphate, that can mention usually has: zinc dialkyl dithiophosphate, diaryl zinc dithiophosphate and arylalkyl zinc dithiophosphate.For example, can use alkyl wherein is to contain the zinc dialkyl dithiophosphate of the uncle of 3-22 carbon or secondary alkyl or the zinc dialkyl dithiophosphate that replaced by the alkyl of 3-18 carbon of alkylaryl wherein.
As the specific examples of zinc dialkyl dithiophosphate, that can mention has: the dipropyl zinc dithiophosphate, zinc dibutyldithiophosphate, diamyl disulfide is for zinc phosphate, the dihexyl zinc dithiophosphate, the diisoamyl zinc dithiophosphate, the diethylhexyl zinc dithiophosphate, the dioctyl zinc dithiophosphate, the dinonyl zinc dithiophosphate, the didecyl zinc dithiophosphate, two (dodecyl) zinc dithiophosphate, dipropyl phenyl zinc dithiophosphate, diamyl phenyl zinc dithiophosphate, dipropyl aminomethyl phenyl zinc dithiophosphate, dinonyl phenyl zinc dithiophosphate, with two (dodecyl) phenyl zinc dithiophosphate.
The phosphorous carboxylic compound for example ester acid of phosphorus-containing carboxylic acid and they should comprise carboxyl and phosphorus atom simultaneously in a part.Their structure is not particularly limited, but from extreme pressure character and the heat and the angle of oxidative stability, usually preferably phosphorylated carboxylic acid or phosphorylated carboxylicesters.
Phosphorus-containing carboxylic acid compound amount in the hydraulic efficiency oil of the present invention is not particularly limited, but is preferably 0.001-1 quality % and more preferably 0.002-0.5 quality %, based on hydraulic efficiency oil total amount meter.If the amount of phosphorus-containing carboxylic acid compound is lower than aforementioned lower limit, then there is the trend that does not obtain lubricating quality.On the other hand, if surpass the aforementioned upper limit, side exists not to be had to obtain corresponding to improved trend of the lubricating quality of the amount that is contained and the other risk that exists heat and oxidative stability or stability to hydrolysis to descend, and this is undesirable.
In order to give hydraulic efficiency oil froth breaking feature of the present invention, can also add defoamer.As the example that is suitable for defoamer of the present invention, that can mention has: the organosilicon acid esters is dimethyl polysiloxane, diethyl silicon ester and fluorosilicone and non-silicone defoamer polyalkyl acrylate for example for example.About their addition, they can use with 0.0001-0.1 quality % separately or as mixture, based on hydraulic efficiency oil total amount meter.
As the example that is suitable for emulsion splitter of the present invention, can mention those that lubricate oil additives that are used as usually known in the art.About their addition, they can use with 0.0005-0.5 quality %, based on hydraulic efficiency oil total amount meter.
Hydraulic efficiency oil of the present invention obtains by every kind of aforementioned component of blend, makes that wherein the kinematic viscosity under 60 ℃ is 25-60mm
2/ s but be preferably 28-50mm
2/ s, the kinematic viscosity under 80 ℃ is 15-34mm
2/ s but be preferably 17-30mm
2/ s, viscosity index is that 200-220 but preferred 205-215 and the cold-starting viscosity under-25 ℃ are 1000-8000mPa.s but are preferably 1000-5000mPa.s.In addition, the blend aforementioned component should make that the kinematic viscosity under 40 ℃ is 45-150mm in hydraulic efficiency oil of the present invention
2/ s but be preferably 50-100mm
2/ s.
The amount of the various components of mixing will change according to amount, viscosity and other character of base oil, the molecular weight of poly-(methyl) acrylate, the amount of thinner etc., but can prepare sample by the ratio that in above-mentioned blend proportional range, changes every kind of component, measure various aforesaid properties and from various character wherein drop on qualified product in the aforementioned range, select best blend ratio and character, thereby experiment is determined.
Hydraulic efficiency oil of the present invention is by adding the hydraulic efficiency oil of use the hydraulic efficiency installation that acts on constructions work in the hydraulic efficiency system, and described hydraulic efficiency installation comprises main at building machinery for example oil motor and hydraulic cylinder of the fluid pressure drive device in hydraulic excavator, wheel loader, dozer, Dump Truck, rough terrain lifting machine, rough terrain crane, hydraulic breaker, Iron Mole, self-driving type crusher, motor-driven grader, street roller, asphalt finisher and the snowplow for example.The feasible hydraulic efficiency oil that will pressurize by the hydro-pump of engine operation in the hydraulic efficiency system of hydraulic efficiency oil that added therein of the use-pattern of hydraulic efficiency oil of the present invention is delivered to hydraulic driver for example oil motor and hydraulic cylinder or other hydraulic efficiency installation, thereby realizes the operation of described machinery.
In the operating period of these hydraulic efficiency systems, because by the heat of engine or dynamical element transmission and by pressure in hydraulic efficiency installation or the pipeline and fricative heat, make the hydraulic efficiency installation that comprises fluid pressure drive device for example operate under 60-80 ℃ the high temperature approximately, but the kinematic viscosity of hydraulic efficiency oil of the present invention has been determined as mentioned above in the scope than the hydraulic pressure innage of prior art in such temperature range, the feasible internal leakage that can suppress in hydro-pump and the control valve, thus in hydraulic efficiency installation, realize the efficient of energy saving and Geng Gao and operation effectively.
Because do not mix for example acid amides of lipid acid, fatty acid ester, polyol ester, amine, acid amides or polyamines of oiliness improver in the hydraulic efficiency oil of the present invention, so may reduce the frictional coefficient of hydraulic efficiency oil and rotary braking control is maintained high level down.
In addition, in hydraulic efficiency oil of the present invention, viscosity index is that 200-220 and the cold-starting viscosity under-25 ℃ are 1000-8000mPa.s.Even because during shut-down is spent the night etc., reach low temperature and machinery in the cold period or in cold zone under the situation of approximately for example-30 ℃ operating to-20 ℃ the low temperature range, it also has low viscosity at low temperatures, so low-temperature performance is good: the response of fluid pressure drive device is good, it is good etc. to control.
That is to say, in the present invention, be 30 by mix weight-average molecular weight in highly refined base oil, 000-100, poly-(methyl) acrylate of 000, the viscosity index that can make composition is 200-220 and makes the kinematic viscosity under 60 ℃ become 25-60mm by this method
2/ s, the kinematic viscosity under 80 ℃ becomes 15-34mm
2/ s and the cold-starting viscosity under-25 ℃ become 1000-8000mPa.s (even also be like this for the composition of high kinematic viscosity), make to reduce cold-starting viscosity.Even without mixing oiliness improver, still can at high temperature effectively move and keep low-temperature performance.
Hydraulic efficiency oil of the present invention is the blend of specific components, make it have specific character, even therefore mixing of oiliness improver minimizes or saves, it also has the high kinematic viscosity in high temperature range and can realize high efficiency operation, with in addition it has good braking character and low viscosity in low temperature range, thereby obtain hydraulic efficiency oil with good low-temperature performance.
Embodiment
Specifically describe the present invention in detail below by embodiment and Comparative Examples, but the present invention is not limited to these embodiment.Among each embodiment below, except under the situation of efficient and low-temperature working character, % represents quality %.
Following material is used to prepare the composition of embodiment and Comparative Examples.
1.
Base oil
Base oil 1: paraffinic hydrocarbons mineral oil, for example carry out hydrocracking to the lubricating oil distillate that is obtained by crude oil atmospheric distillation by the appropriate combination of method for refining and be classified as the I class with the dewaxing acquisition with according to API (API) base oil classification.(feature: the kinematic viscosity under 40 ℃, 16.3mm
2/ s; Kinematic viscosity under 60 ℃, 8.85mm
2/ s; Kinematic viscosity under 80 ℃, 5.4mm
2/ s; Kinematic viscosity under 100 ℃, 3.72mm
2/ s; Viscosity index, 116; Density under 15 ℃, 0.851g/cm
3Sulphur content (being scaled elementary sulfur), 0.3%; Nitrogen content (being scaled elemental nitrogen) is lower than 5ppm; The ring analysis paraffinicity is according to ASTMD3238 method, 70%; Naphthene content, the same, 28%; Aromaticity content, the same, 2%.)
Base oil 2: paraffinic hydrocarbons mineral oil, for example carry out hydrocracking to the lubricating oil distillate that is obtained by crude oil atmospheric distillation by the appropriate combination of method for refining and be classified as the I class with the dewaxing acquisition with according to API (API) base oil classification.(feature: the kinematic viscosity under 40 ℃, 17.7mm
2/ s; Kinematic viscosity under 60 ℃, 9.50mm
2/ s; Kinematic viscosity under 80 ℃, 5.83mm
2/ s; Kinematic viscosity under 100 ℃, 3.94mm
2/ s; Viscosity index, 118; Density under 15 ℃, 0.856g/cm
3Sulphur content (being scaled elementary sulfur), 0.4%; Nitrogen content (being scaled elemental nitrogen) is lower than 5ppm; The ring analysis paraffinicity is according to ASTM D3238 method, 69%; Naphthene content, the same, 29%; Aromaticity content, the same, 2%.)
Base oil 3: paraffinic hydrocarbons mineral oil, for example carry out hydrocracking to the lubricating oil distillate that is obtained by crude oil atmospheric distillation by the combination of method for refining and be classified as the I class with the dewaxing acquisition with according to API (API) base oil classification.(feature: the kinematic viscosity under 40 ℃, 16.2mm
2/ s; Kinematic viscosity under 60 ℃, 8.77mm
2/ s; Kinematic viscosity under 80 ℃, 5.43mm
2/ s; Kinematic viscosity under 100 ℃, 3.69mm
2/ s; Viscosity index, 115; Density under 15 ℃, 0.850g/cm
3Sulphur content (being scaled elementary sulfur), 0.3%; Nitrogen content (being scaled elemental nitrogen) is lower than 5ppm; The ring analysis paraffinicity is according to ASTM D3238 method, 70%; Naphthene content, the same, 28%; Aromaticity content, the same, 2%.)
2.
Viscosity index improver
Polymethacrylate, weight-average molecular weight are 60,000.
Weight-average molecular weight is the polystyrene conversion weight-average molecular weight by following process measurement: differential refraction detector and low angle light scatter detector, utilize tetrahydrofuran (THF) as solvent, temperature is 23 ℃, flow is 1mL/min, sample concentration is that 1 quality % and sample input are 75 μ L, utilizes two GMHHR-M that produced by Toso Ltd. contacting in the 150-CALC/GPC equipment of being produced by Waters Ltd. (post of 7.8mm internal diameter * 30cm).
The polymer concentration of measuring by the rubber membrane dialysis viscosity index improver is 63 quality %.In rubber membrane dialysis, the 2-3g viscosity index improver sample of at first accurately weighing in health (rubber) bag is pricked suitable for reading subsequently and is being utilized the 100ml sherwood oil to reflux under 80 ℃, in the Soxhlet extractor 8 hours.After the backflow, reclaim the dialysis resistates in the rubber diaphragm, heating is to remove solvent and to weigh subsequently in water-bath.The dialysis resistates with respect to the ratio of primary sample as polymer concentration.
3.
Oiliness improver
Triethylene four acid amides isostearates.
4.
Other additive
Additive is the mixture of ZnDTP, rust-preventive agent, metal passivator, defoamer and dilution mineral oil.
Embodiment 1, reference example 1, and Comparative Examples 1-4:
Utilize previous materials, according to the prescription that shows in table 1 and 2, the lubricating oil composition of preparation embodiment 1 and Comparative Examples 1 and 2.The reference example is commercial diesel engine oil, JASODH-1SAE 10W (feature: the kinematic viscosity under 40 ℃, 36.2mm
2/ s; Kinematic viscosity under 100 ℃, 6.04mm
2/ s; Viscosity index, 112), Comparative Examples 3 is commercial anti-wear hydraulic oils, ISOVG46 (feature: the kinematic viscosity under 40 ℃, 48.4mm
2/ s; Kinematic viscosity under 100 ℃, 6.99mm
2/ s; Viscosity index, 100) and Comparative Examples 4 are commercial anti-wear hydraulic oils, ISOVG100 (feature: the kinematic viscosity under 40 ℃, 103.3mm
2/ s; Kinematic viscosity under 100 ℃, 11.5mm
2/ s; Viscosity index, 98).
Test:
Measure the viscosity characteristics of the lubricating oil composition of embodiment 1, Comparative Examples 1-4 and reference example, in order to estimate their performance, the measurement of carrying out about efficiency test, low-temperature working characteristic test and frictional coefficient as described below.
Viscosity characteristics:
By utilizing kinematic viscosity testing method and the viscosity index method of calculation that provide among the JIS K2283, measure 60 ℃ of kinematic viscosity, 80 ℃ of kinematic viscosity and viscosity index for crude oil and petroleum products.Cold-starting viscosity under-25 ℃ is measured by the cold cranking simulator of describing among the JIS K2010Appendix A.
Efficiency test:
Utilize specified 110kW of being output as and shim size to be 0.8m
3Hydraulic excavator, select maximum output as operator scheme, under normal full trrottle, unloading and loading operation and time measuring period.Unloading and the implication of loading work are: position operation arm, scraper bowl and suspension rod by from regulation, and the rising suspension rod is returned turn 90 degrees, motion arm and scraper bowl to be discharging earth, and final subsequently return arm, scraper bowl, suspension rod also return back to their original position.With stopwatch measure from begin to be offloaded to time of returning the original position and with the mean value of 4 tests as cycle time.By assess effectiveness with the standard oil comparison.
The low-temperature working characteristic test:
Utilize specified 110kW of being output as and shim size to be 0.8m
3Hydraulic excavator, by estimating the working speed of a plurality of drive units, thus to controlling feature evaluation after the operation well heater in low temperature environment.Engine starts under-30 ℃ external air temperature, and definite hydraulic efficiency oil and pilot circuit oil temperature are-20 ℃.Subsequently, make hydraulic fluid temperature reach after 10 ℃, arm, scraper bowl and suspension rod are operated separately separately at the operation well heater.Reach the time of stroke endpoint by stopwatch measurement each cylinder after the application controls bar.Based on total time of motion arm, scraper bowl and suspension rod and when the sensation of controlling when respectively operating control lever, evaluation is controlled feature in low temperature environment.Compare with standard oil, estimate low temperature and control feature.If the sensation ratio of controlling of control lever uses the standard oil time difference, then be assessed as failure.
Frictional coefficient:
Frictional coefficient under 140 ℃ of oil temperatures is by being measured by the definite Microclutch testing method to regulation in the friction characteristic test of the hydraulic efficiency oil that is used for building machinery of Japan ConstructionMachinery Association (JCMAS PO47).At least 0.090 frictional coefficient be considered to by.
Test result:
The results are shown in table 1 and the table 2 of each test.
Table 1
Table 2
Discuss
As shown in table 1, about efficient, the efficiency ratio standard innage 2.0% of embodiment 1 is controlled about low temperature, and embodiment 1 demonstrates 24.6% improvement.
On the other hand, as shown in table 2, under the situation of the Comparative Examples 1 of having mixed oiliness improver, frictional coefficient hangs down and braking ability can not be satisfactory.In addition, viscosity characteristics is lower than under the situation of Comparative Examples 2 of embodiment 1 therein, is gratifying though low temperature is controlled, and efficient and standard oil are in par and significantly do not improve.This external viscosity index is that low temperature is controlled non-constant under about 100 the commercial wearable hydraulic oil condition.
Potential industrial use
The present invention can be as the hydraulic oil of building machinery, namely as mainly for example comprising for example hydraulic oil of the hydraulic test of hydraulic motor and hydraulic cylinder of fluid pressure drive device in hydraulic crawler excavator, wheel loader, bull-dozer, dump truck, rough terrain crane, rough terrain crane, hydraulic breaker, Iron Mole, self-driving type disintegrating machine, motor-driven grader, road roller, asphalt finisher and the snowplough at building machinery.
Claims (10)
1. the hydraulic efficiency oil that is used for building machinery, the weight-average molecular weight that wherein said hydraulic efficiency oil comprises in the highly refined base oil is 30,000-100,000 poly-(methyl) acrylate but do not mix oiliness improver and wherein the kinematic viscosity under 60 ℃ be 25-60mm
2/ s, the kinematic viscosity under 80 ℃ is 15-34mm
2/ s, viscosity index is that 200-220 and the cold-starting viscosity under-25 ℃ are 1000-8000mPa.s.
2. the hydraulic efficiency oil of claim 1, the weight-average molecular weight of wherein said poly-(methyl) acrylate is 30,000-70,000.
3. claim 1 or 2 hydraulic efficiency oil, wherein said kinematic viscosity under 60 ℃ is 28-50mm
2/ s.
4. each hydraulic efficiency oil of claim 1-3, wherein said kinematic viscosity under 80 ℃ is 17-30mm
2/ s.
5. each hydraulic efficiency oil of claim 1-4, wherein said viscosity index is 205-215.
6. each hydraulic efficiency oil of claim 1-5, wherein said cold-starting viscosity under-25 ℃ is 1000-5000mPa.s.
7. each hydraulic efficiency oil of claim 1-6, wherein said kinematic viscosity under 40 ℃ is 45-150mm
2/ s.
8. each hydraulic efficiency oil of claim 1-7 is 15-25 quality % comprising the amount of poly-(methyl) acrylate of thinner, based on hydraulic efficiency oil total amount meter.
9. each hydraulic efficiency oil of claim 1-8, the amount of wherein pure poly-(methyl) acrylate is 1-24 quality %, based on hydraulic efficiency oil total amount meter.
10. each hydraulic efficiency oil of claim 1-9, wherein said poly-(methyl) acrylate are selected from polymkeric substance that contains one or both or more kinds of component units by following general formula (1) expression or the polymkeric substance that contains these component units and other component units
Wherein, R
1Expression hydrogen or methyl, R
2The expression contain 1-30 carbon alkyl or by-(R)
aThe group that-E represents, wherein R is the alkylidene group that contains 1-30 carbon, E represents to contain the amine residue of 1-2 nitrogen-atoms and 0-2 Sauerstoffatom or heterocycle residue and a and represents 0 or 1 integer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007250207 | 2007-09-26 | ||
| JP2007-250207 | 2007-09-26 | ||
| PCT/IB2008/002550 WO2009040658A1 (en) | 2007-09-26 | 2008-09-23 | Hydraulic oil for use in construction machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101868523A true CN101868523A (en) | 2010-10-20 |
Family
ID=40130624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880109051A Pending CN101868523A (en) | 2007-09-26 | 2008-09-23 | Hydraulic oil for use in construction machinery |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20100298186A1 (en) |
| EP (1) | EP2193186B1 (en) |
| JP (1) | JP5301226B2 (en) |
| KR (1) | KR20100059908A (en) |
| CN (1) | CN101868523A (en) |
| AT (1) | ATE532844T1 (en) |
| BR (1) | BRPI0817278A2 (en) |
| RU (1) | RU2464303C2 (en) |
| WO (1) | WO2009040658A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703173A (en) * | 2012-06-27 | 2012-10-03 | 上海三一重机有限公司 | Efficient hydraulic oil with high viscosity indexes |
| CN103013635A (en) * | 2012-12-27 | 2013-04-03 | 安陆市奥森石油化学有限责任公司 | Ester type fire-resistant hydraulic fluid and preparation method thereof |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5689326B2 (en) | 2010-01-25 | 2015-03-25 | 昭和シェル石油株式会社 | Method for producing lubricating oil composition and method for selecting fluidity improver for lubricating oil composition |
| JP5764298B2 (en) * | 2010-03-31 | 2015-08-19 | 出光興産株式会社 | Biodegradable lubricating oil composition having flame retardancy |
| WO2011142447A1 (en) * | 2010-05-13 | 2011-11-17 | 株式会社小松製作所 | Rotating parking brake control device for construction machinery |
| CN102757841B (en) * | 2011-04-29 | 2014-03-26 | 中国石油化工股份有限公司 | Ashless ultralow-temperature hydraulic oil |
| JP5925003B2 (en) * | 2012-03-23 | 2016-05-25 | 出光興産株式会社 | Lubricating oil composition and equipment using the same |
| AU2014245378A1 (en) | 2013-03-29 | 2015-10-15 | Idemitsu Kosan Co.,Ltd. | Lubricant oil composition |
| JP6134212B2 (en) * | 2013-06-24 | 2017-05-24 | Ｊｘｔｇエネルギー株式会社 | Hydraulic fluid composition |
| JP6235864B2 (en) * | 2013-10-30 | 2017-11-22 | 出光興産株式会社 | Lubricating oil composition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1823155A (en) * | 2003-07-25 | 2006-08-23 | 罗麦斯添加剂有限公司 | A functional fluid and the use thereof |
| WO2007001000A1 (en) * | 2005-06-29 | 2007-01-04 | Nippon Oil Corporation | Base oil for hydraulic oil and hydraulic oil compositions |
| CN1952091A (en) * | 2005-08-31 | 2007-04-25 | 出光兴产株式会社 | Hydraulic oil composition |
| US20070197411A1 (en) * | 2005-10-13 | 2007-08-23 | Hiroshi Kaneko | Lubricating oil composition |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2555284B2 (en) * | 1987-05-14 | 1996-11-20 | 出光興産株式会社 | Lubricant composition with improved temperature characteristics |
| US5520832A (en) * | 1994-10-28 | 1996-05-28 | Exxon Research And Engineering Company | Tractor hydraulic fluid with wide temperature range (Law180) |
| JP2000109876A (en) * | 1998-10-09 | 2000-04-18 | Tonen Corp | Hydraulic oil composition for buffer |
| JP2005307202A (en) * | 2004-03-25 | 2005-11-04 | Nippon Oil Corp | Lubricating oil composition |
| EP1795581B1 (en) * | 2004-07-16 | 2018-09-19 | Kuraray Co., Ltd. | Lubricating oil composition containing acrylic polymer |
| JP4964426B2 (en) * | 2005-03-30 | 2012-06-27 | Ｊｘ日鉱日石エネルギー株式会社 | Lubricating oil composition |
| JP5260823B2 (en) * | 2005-10-13 | 2013-08-14 | 昭和シェル石油株式会社 | Hydraulic fluid |
-
2008
- 2008-09-19 JP JP2008241145A patent/JP5301226B2/en active Active
- 2008-09-23 CN CN200880109051A patent/CN101868523A/en active Pending
- 2008-09-23 EP EP08807186A patent/EP2193186B1/en not_active Revoked
- 2008-09-23 AT AT08807186T patent/ATE532844T1/en active
- 2008-09-23 KR KR1020107006547A patent/KR20100059908A/en not_active Application Discontinuation
- 2008-09-23 RU RU2010116207/04A patent/RU2464303C2/en not_active IP Right Cessation
- 2008-09-23 US US12/679,577 patent/US20100298186A1/en not_active Abandoned
- 2008-09-23 BR BRPI0817278-1A patent/BRPI0817278A2/en not_active IP Right Cessation
- 2008-09-23 WO PCT/IB2008/002550 patent/WO2009040658A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1823155A (en) * | 2003-07-25 | 2006-08-23 | 罗麦斯添加剂有限公司 | A functional fluid and the use thereof |
| WO2007001000A1 (en) * | 2005-06-29 | 2007-01-04 | Nippon Oil Corporation | Base oil for hydraulic oil and hydraulic oil compositions |
| CN1952091A (en) * | 2005-08-31 | 2007-04-25 | 出光兴产株式会社 | Hydraulic oil composition |
| US20070197411A1 (en) * | 2005-10-13 | 2007-08-23 | Hiroshi Kaneko | Lubricating oil composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703173A (en) * | 2012-06-27 | 2012-10-03 | 上海三一重机有限公司 | Efficient hydraulic oil with high viscosity indexes |
| CN103013635A (en) * | 2012-12-27 | 2013-04-03 | 安陆市奥森石油化学有限责任公司 | Ester type fire-resistant hydraulic fluid and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100059908A (en) | 2010-06-04 |
| ATE532844T1 (en) | 2011-11-15 |
| JP2009096995A (en) | 2009-05-07 |
| EP2193186B1 (en) | 2011-11-09 |
| JP5301226B2 (en) | 2013-09-25 |
| RU2464303C2 (en) | 2012-10-20 |
| EP2193186A1 (en) | 2010-06-09 |
| RU2010116207A (en) | 2011-11-10 |
| US20100298186A1 (en) | 2010-11-25 |
| WO2009040658A1 (en) | 2009-04-02 |
| BRPI0817278A2 (en) | 2015-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101868523A (en) | Hydraulic oil for use in construction machinery | |
| JP5345808B2 (en) | Engine oil composition | |
| CN101128571B (en) | A use of a polyalkylmethacrylate polymer | |
| EP2474601B1 (en) | Lubricant oil composition | |
| US8785359B2 (en) | Lubricant oil composition | |
| WO2016159006A1 (en) | Lubricating oil composition | |
| JP5689592B2 (en) | Lubricating oil composition | |
| CN104160002B (en) | Variable-speed motor lubricating oil composition | |
| CN101827922A (en) | Hydraulic fluid compositions and preparation thereof | |
| CN102272278A (en) | Composition containing a block copolymer and a method of lubricating an internal combustion engine | |
| CN103517973B (en) | Lubricating oil composition | |
| JP2009167278A (en) | Lubricant composition | |
| CN101809130A (en) | Two-cycle gasoline engine lubricant | |
| JP2016020498A (en) | Lubricant composition | |
| CN105008502B (en) | The lubricating composition made from polyglyceryl ether | |
| JP5959621B2 (en) | Lubricating oil composition | |
| JP6043245B2 (en) | Poly (meth) acrylate viscosity index improver, and lubricating oil additive and lubricating oil composition containing the viscosity index improver | |
| JP2010090252A (en) | Lubricant composition | |
| JP2014205858A (en) | Lubricant composition | |
| JP2015013964A (en) | Poly(meth)acrylate-based viscosity index improver, and lubricating oil additive and lubricating oil composition containing viscosity index improver | |
| JP2013076102A (en) | Lubricant composition | |
| JP2000053986A (en) | Lubricating oil composition for large-sized diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101020 |