EP0273460B1 - Kraftübertragungsflüssigkeit - Google Patents

Kraftübertragungsflüssigkeit Download PDF

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Publication number
EP0273460B1
EP0273460B1 EP87119397A EP87119397A EP0273460B1 EP 0273460 B1 EP0273460 B1 EP 0273460B1 EP 87119397 A EP87119397 A EP 87119397A EP 87119397 A EP87119397 A EP 87119397A EP 0273460 B1 EP0273460 B1 EP 0273460B1
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Prior art keywords
weight
percent
fluid
water
alkylene oxide
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EP87119397A
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English (en)
French (fr)
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EP0273460A2 (de
EP0273460A3 (en
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Walter Ensign Francis Lewis
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Union Carbide Corp
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Union Carbide Corp
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Priority to AT87119397T priority Critical patent/ATE64612T1/de
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Publication of EP0273460A3 publication Critical patent/EP0273460A3/en
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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
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • 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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/28—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M129/38—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
    • C10M129/40—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms monocarboxylic
    • 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M133/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M133/08—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/38—Heterocyclic nitrogen 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/38—Heterocyclic nitrogen compounds
    • C10M133/48—Heterocyclic nitrogen compounds the ring containing both nitrogen and oxygen
    • C10M133/50—Morpholines
    • 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
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/32—Heterocyclic sulfur, selenium or tellurium 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
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C10M145/28—Polyoxyalkylenes of alkylene oxides containing 2 carbon atoms only
    • 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
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C10M145/34—Polyoxyalkylenes of two or more specified different types
    • 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
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
    • 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
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • 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
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
    • 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
    • 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
    • C10M2215/22—Heterocyclic nitrogen 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/225—Heterocyclic nitrogen compounds the rings containing both nitrogen and oxygen
    • C10M2215/226—Morpholines
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/09—Heterocyclic compounds containing no sulfur, selenium or tellurium compounds in the ring
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring

Definitions

  • This invention relates to water-glycol type energy transmitting fluids having enhanced lubricity and anti-wear properties under high pressure conditions.
  • Water-based fluids have been used commercially for many years as a means of transmitting energy in hydraulic systems.
  • water-based fluids include the water-soluble glycol or glycol ether-containing compositions (hereinafter "water-glycol" type fluids) disclosed, for example, in US-A- 2,558,030, 2,602,780 and 2,768,141 .
  • water-glycol type fluids Compared to petroleum-based fluids, water-glycol type fluids generally have low flammibility, and good temperature stability. Moreover, clean-up and disposal are usually more convenient when utilizing water-glycol type fluids as opposed to petroleum-based compositions. However, water-glycol type energy transmitting fluids, such as are disclosed by the above-cited patents, generally have relatively poor lubricating and anti-wear properties in high pressure applications.
  • U.S. - A - 2,917,699 discloses the use of alkali metal soaps of an organic aliphatic acid as an anti-wear agent in water-glycol type hydraulic fluids.
  • U.S. - A - 4,493,777 discloses a water-based hydraulic fluid having incorporated therein as an antiwear or lubricity agent, the metal or amine salt of an organo sulfur, phosphorous, boron or carboxylic acid.
  • U.S. - A - 3,992,312 discloses a water-glycol base hydraulic fluid comprising from about 30-60 weight percent of water; from about 5-30 weight percent of a water-soluble polymer containing (1) a residue of a polyamide having active hydrogen atoms and (2) oxyalkylene groups bonded to the residue; and from about 15-60 weight percent of a glycol, said fluid being disclosed as having good lubricating and wear preventing qualities.
  • U.S.-A- 4,434,066 discloses a water-glycol type fluid composition comprising in the agueous composition having a viscosity of at least 10 mm 2 /s at 40°C at least 0.1 percent of a carboxylic acid lubricant agent and an anti-wear additive which comprises a combination of an hydroxyl-substituted aromatic acid component and a nitroaromatic compound component and optionally up to 50 % glycol or glycol ether and a polymeric viscosity control agent.
  • U.S. - A - 4,390,439 discloses the use of neodecanoic acid to improve to anti-wear and corrosion-inhibiting properties of hydraulic fluids having a water content of from about 60 to about 99 weight percent.
  • This invention relates to an energy transmitting fluid with a viscosity of 10 - 200mm2/s at 40°c suitable for use in systems operating at pressures up to at least 345 bar (5,000 psi) comprising - based on the total weight of the fluid
  • a water-glycol composition having a viscosity of from 10 to 200 mm 2 /s (centistokes) at 40°C comprising water, diethylene glycol, an aliphatic carboxylic acid having 9 to 12 carbon atoms, a water-soluble polymeric viscosity control agent, at least one corrosion inhibitor, and a metal deactivator.
  • the aliphatic carboxylic acid component of the composition of this invention is selected from the group consisting of saturated and unsaturated, linear and branched carboxylic and polycarboxylic acids having 9 to 12 carbon atoms and mixtures thereof.
  • Representative of the carboxylic acids suitable for use herein are nonanoic, decanoic, neodecanoic, undecanoic, and dodecanoic acids, and mixtures thereof.
  • the C9 to C12 carboxylic acid is generally present in the above described composition in an amount of from 0.8 to 5.0 percent by weight, preferably from 1.0 to 2.0 percent by weight, and, most preferably, from 1 to 1.6 percent by weight, all based upon the total weight of the composition. At concentrations of less than about 0.8 percent by weight, the C9 to C12 carboxylic acids are generally unable to provide the lubricity required for high pressure applications.
  • linear carboxylic acids having 10 to 12 carbon atoms, inclusive, constitute a preferred class of carboxylic acids.
  • the polymeric viscosity control agents of the composition of this invention include poly(alkylene oxide) polymers, alkylene oxide adducts of alkyl phenols, polyalkyl methacrylates, urethane polymers, polyamide esters, and polyamide alkoxylates, with poly(alkylene oxide) polymers being a preferred class of polymers.
  • the poly(alkylene oxide) polymers suitable for use herein contain oxyethylene groups or a random or block distribution of both oxyethylene groups and higher oxyalkylene groups such as oxypropylene and oxybutylene groups and have average molecular weights of from 400 to 40,000, or even higher.
  • the amount of oxyethylene groups in the molecule is such that the Poly(alkylene oxide) polymers are soluble in water at 25°C and the amount of oxypropylene or higher oxyalkylene groups is such that the poly(alkylene oxide) remains liquid at 25°C up to an average molecular weight of 40,000 and higher.
  • the oxypropylene/ oxyethylene ratio may vary from zero to about unity.
  • poly(alkylene oxide) polymers may be made by processes well known in the art by reacting ethylene oxides or mixtures of ethylene oxide and propylene oxide or higher alkylene oxide with a compound having at least 1 active hydrogen atom up to as many as 6 such active hydrogen atoms including, for example, water, monohydroxylic alcohols such as ethanol and propanol, dihydroxylic alcohols such as ethylene glycol, trihydroxylic alcohols such as glycerine and trimethylpropane, tetrahydroxylic alcohols such as pentaerythritol, hexahydroxylic alcohols such as sorbitol, and mono- or poly-functional amines such as butylamine and ethylene diamine.
  • a compound having at least 1 active hydrogen atom up to as many as 6 such active hydrogen atoms including, for example, water, monohydroxylic alcohols such as ethanol and propanol, dihydroxylic alcohols such as ethylene glycol, trihydroxylic alcohols such as glycerine and trimethylprop
  • the poly(alkylene oxide) products of such reaction will have linear or branched oxyethylene or oxyethylene-higher oxyalkylene chains and such chains will terminate with hydroxyl groups. Some or all of these hydroxyl groups may be etherified by reaction with a dialkyl sulfate such as diethyl sulfate.
  • Alkylene oxide adducts of alkyl phenols suitable for use herein include the adducts disclosed, for example, in U.S. -A- 2,768,141 and U.S.-A- 3,379,644.
  • Polyalkyl methacrylates and polyurethanes such as may be employed herein are disclosed, for example, in U.S. - A - 3,352,783. These polyalkyl metharylates generally result from the polymerization of alkyl methacrylates in which the alkyl groups have an average of from 3 to 10 carbon atoms.
  • polyamide esters suitable for use herein are the polymers disclosed in U.S. - A - 3,341,573. Suitable polyamide alkoxylates are disclosed, for example, in U.S. -A- 3,992,312.
  • random copolymers of ethylene oxide and 1,2-propylene oxide having a viscosity of up to 100,000mm 2 /s at 100°C, preferably of from 5,000 to 50,000 mm 2 /s at 100°C and comprising from 65 to 85 weight percent of oxyethylene groups are preferred.
  • the relative quantities of viscosity control agent and diethylene glycol provided to the energy transmitting compositions of this invention are subject to variation depending upon the desired viscosity of the energy transmitting composition and the particular viscosity control agent employed therein.
  • the diethylene glycol and viscosity control agent are present in the compositions of this invention in amounts sufficient to provide such compositions with a viscosity of from 35 to 80 mm 2 /s at 40°C.
  • composition viscosities within the previously described ranges of preference are achieved by utilizing a Poly(alkylene oxide) viscosity control agent in an amount of from 10 to 20 percent by weight of the composition, and diethylene glycol in an amount of from 35 to 60 percent by weight of the composition.
  • the optimum viscosity of the fluid compositions of this invention is subject to variation and depends in part on the type of pump employed in a given operation.
  • vane pumps typically operate at pressures up to 207 bar (3,000 psi) and employ as the fluid of choice a composition having a viscosity of from 60 to 80 mm 2 /s at 40°C
  • the fluid of choice in axial piston pumps which generally operate at pressures of from 345 (5,000 psi) to 414 bar (6,000 psi) typically has a viscosity of from 35 to 50 mm2/s at 40°C.
  • alkyl amines such as, for example, propylamine, butylamine, hexylamine, n-octylamine, cyclohexylamine, dimethylaminopropylamine, and the like; alkanolamines such as, for example, ethanolamine, diethanolamine, triethanolamine, N,N-dimethylethanolamine, arylamines such as aminotoluene; as well as other amine-type corrosion inhibitors such as for example, ethylene diamine, isopropylaminoethanol, tripropylamine, morpholine, pyridine, 1,4-bis(2-aminoethyl)pyperdine, imidazoline, 2-heptadecyl-1-(2-hydroxyethyl)- imidazoline; and mixtures thereof.
  • other corrosion inhibitors suitable for use herein include alkali metal nit
  • the amount of corrosion inhibitor present in the composition of this invention is subject to variation and depends in part upon factors which include choice of inhibitor(s) and the severity of the application in which the fluid is employed. In general the total amount of inhibitor present in the composition of this invention ranges from 0.4 to 4.0 percent by weight, based upon the total weight of the composition. As used herein a " corrosion inhibiting amount" of inhibitor is at least that amount of one or more inhibitors which is effective in achieving the degree of corrosion protection required by a particular application.
  • the metal deactivators used herein function primarily as chelating agents for copper and copper alloys.
  • Representative of the metal deactivators suitable for use in the compositions of this invention are tolyltriazole, benzotriazole, mercaptobenzothiazole sodium mercaptobenzothiazole, disodium 2,5-mercaptothiadiazole, mercaptobenzoimidazole, and mixtures thereof.
  • the total amount of metal deactivator present in the composition of this invention is from 0.01 to 2.0 percent by weight, based upon the total weight of the composition.
  • the energy transmitting fluids of this invention may further comprise one or more additional components as are conventionally used in water-based fluids.
  • additional components typically constitutes from 0.001 to 2 % percent of the total weight of the fluid composition.
  • foam inhibitors such as silicones of the emulsion type, polyoxyalkylene type nonionic surfactants, and the like; alkaline compatible dyes; sequestering agents such as aminocarboxylic acids and derivatives thereof including ethylenediaminetetraacetic acid (EDTA)- diethylenetriaminepentaacetic acid, the sodium or copper salts thereof, and oxycarboxylic acids and derivatives thereof such as tartaric acid and sodium glyconate; and such other additives as would not interact with the previously described components to adversely affect the lubricity of the resultant composition.
  • foam inhibitors such as silicones of the emulsion type, polyoxyalkylene type nonionic surfactants, and the like
  • alkaline compatible dyes such as aminocarboxylic acids and derivatives thereof including ethylenediaminetetraacetic acid (EDTA)- diethylenetriaminepentaacetic acid, the sodium or copper salts thereof, and oxycarboxylic acids and derivatives thereof such as tartaric acid and sodium
  • each of the components used may be added in any order of addition, or combinations of some, of them may be prepared prior to incorporating same in the composition.
  • each of the components to be used should be in water-soluble form such as the alkali metal or ammonium salts thereof, or should be capable of being solubilized in situ.
  • the compositions of this invention may be prepared from concentrates which in use are diluted to provide the water contents previously described.
  • an energy transmitting fluid suitable for use in systems operating at pressures up to at least 345 bar (5,000 psi)consisting essentially of:
  • Wear rates provided in Table 1 represent an average value of six replicate test runs. A formulation was considered to pass the test if each of the six replicate runs provided wear rates of less than 1 gram/100 hours. If a given run provided a wear rate in excess of 1 gram/100 hours testing was discontinued and the formulation was considered to have failed the test.
  • test fluid 60,6 1 (16 gallons)of test fluid was charged to a Sundstrand Model 22-2132 variable displacement pump equipped with welded pistons. Operational condition employed in the test were as follows:

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Claims (11)

  1. Energieübertragungsflüssigkeit mit einer Viskosität von 10 bis 200 mm2/s bei 40°C zur Übertragung mechanischer Energie durch Flüssigkeitsdruck in Systemen, die bei Drucken bis hinauf zu zumindest 345 bar arbeiten, enthaltend - bezogen auf das Gesamtgewicht der Flüssigkeit -
    (a) 30 bis 40 Gew.-% Wasser;
    (b) 35 bis 60 Gew.-% Diethylenglykol;
    (c) 0,8 bis 5 Gew.-% einer aliphatischen Carbonsäure mit 9 bis 12 Kohlenstoffatomen;
    (d) 10 bis 20 Gew.-% eines wasserlöslichen polymeren die Viskosität einstellenden Mittels;
    (e) 0,4 bis 4 Gew.-% zumindest eines Korrosionsinhibitors und
    (f) 0,01 bis 2 Gew.-% eines Metall-Desaktivators.
  2. Flüssigkeit nach Anspruch 1, wobei das polymere die Viskosität einstellende Mittel ausgewählt ist aus Poly(alkylen-oxid)polymeren, Alkylenoxidaddukten von Alkylphenolen, Polyalkylmethacrylaten, Polyurethanen, Polyamidestern und Polyamidalkoxylaten.
  3. Flüssigkeit nach Anspruch 1 oder 2, wobei der Korrosionsinhibitor zumindest einen Amin-Inhibitor enthält.
  4. Flüssigkeit nach Anspruch 1 bis 3, wobei der Metall-Desaktivator ausgewählt ist aus Tolyltriazal, Benzotriazol, Mercaptobenzothiazol, Natriummercaptobenzothiazol, Dinatrium-2,5-mercaptothiadiazol, Mercaptobenzoimidazol und deren Gemische.
  5. Flüssigkeit nach Anspruch 1 und 4, wobei das wasserlösliche polymere die Viskosität regelnde Mittel ein Poly(alkylenoxid)polymer ist.
  6. Flüssigkeit nach Anspruch 5, wobei das Poly(alkylenoxid)-polymer ein statistisches Copolymer von Ethylenoxid und 1,2-Propylenoxid mit einer Viskosität bis zu 100 000 mm2/s bei 100°C ist.
  7. Flüssigkeit nach Anspruch 1 bis 6, wobei die Carbonsäure eine lineare Carbonsäure mit 10 bis 12 Kohlenstoffatomen ist, bevorzugt Nonansäure, Decansäure, Neodecansäure, Undecansäure, Dodecansäure und deren Gemische.
  8. Flüssigkeit nach Anspruch 1 bis 7, enthaltend eine Kombination von Morpholin und Isopropylaminoethanol als Amin-Korrosionsinhibitor.
  9. Flüssigkeit nach Anspruch 1 bis 8, enthaltend - bezogen auf das Gesamtgewicht der Flüssigkeit -
    (a) 34 bis 37 Gew.-% Wasser,
    (b) 35 bis 50 Gew.-% Diethylenglykol,
    (c) 1 bis 2 Gew.-% aliphatische Carbonsäure mit 9 bis 12 Kohlenstoffatomen,
    (d) 12 bis 16 Gew.-% wasserlösliches Poly(alkylenoxid) als die Viskosität einstellendes Mittel,
    (e) 1,4 bis 3,5 Gew.-% zumindest eines Amin-Korrosionsinhibitors und
    (f) 0,04 bis 0,1 Gew.-% eines Metall-Desaktivators.
  10. Flüssigkeit nach Anspruch 9, wobei das Poly(alkylenoxid) als die Viskosität einstellendes Mittel eine Viskosität von 40 000 bis 60 000 mm2/s bei 100°C besitzt und 70 bis 80 Gew.-% Ethylenoxidgruppen enthält.
EP87119397A 1986-12-30 1987-12-30 Kraftübertragungsflüssigkeit Expired - Lifetime EP0273460B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87119397T ATE64612T1 (de) 1986-12-30 1987-12-30 Kraftuebertragungsfluessigkeit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94787886A 1986-12-30 1986-12-30
US947878 1986-12-30

Publications (3)

Publication Number Publication Date
EP0273460A2 EP0273460A2 (de) 1988-07-06
EP0273460A3 EP0273460A3 (en) 1988-11-30
EP0273460B1 true EP0273460B1 (de) 1991-06-19

Family

ID=25486936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87119397A Expired - Lifetime EP0273460B1 (de) 1986-12-30 1987-12-30 Kraftübertragungsflüssigkeit

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EP (1) EP0273460B1 (de)
JP (1) JPS63308086A (de)
KR (1) KR920009624B1 (de)
AR (1) AR240173A1 (de)
AT (1) ATE64612T1 (de)
BR (1) BR8707105A (de)
CA (1) CA1288760C (de)
DE (1) DE3770930D1 (de)
DK (1) DK690287A (de)
ES (1) ES2022294B3 (de)
GR (1) GR3002159T3 (de)
MX (1) MX169073B (de)
SG (1) SG2992G (de)
ZA (1) ZA879760B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9508323D0 (en) * 1995-04-25 1995-06-14 Houghton Vaughan Plc Composition
CN1173093C (zh) * 1999-12-03 2004-10-27 麦特索纸业公司 在造纸机或纸板机中使用水压系统的方法
US7741259B2 (en) * 2005-07-01 2010-06-22 Enbio Industries, Inc. Environmentally compatible hydraulic fluid
JP5328787B2 (ja) 2007-07-18 2013-10-30 ダウ グローバル テクノロジーズ エルエルシー 水−グリコール液圧流体組成物
JP7213629B2 (ja) * 2017-07-10 2023-01-27 Ｅｎｅｏｓ株式会社 熱媒体液、及び工作機械の温度を制御する方法
JP2021161356A (ja) * 2020-04-03 2021-10-11 シェルルブリカンツジャパン株式会社 水−グリコール系作動液組成物及びその追加補充添加剤

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119280A (en) * 1974-08-06 1976-02-16 Sanyo Chemical Ind Ltd Shinkinamizu gurikoorugatafunenseisadoyu
US4390440A (en) * 1981-06-08 1983-06-28 Basf Wyandotte Corporation Thickened water-based hydraulic fluids
US4481125A (en) * 1982-05-03 1984-11-06 E.F. Houghton & Co. Water-based hydraulic fluid

Also Published As

Publication number Publication date
ATE64612T1 (de) 1991-07-15
CA1288760C (en) 1991-09-10
KR880007705A (ko) 1988-08-29
KR920009624B1 (ko) 1992-10-22
ZA879760B (en) 1988-08-31
DE3770930D1 (de) 1991-07-25
GR3002159T3 (en) 1992-12-30
ES2022294B3 (es) 1991-12-01
EP0273460A2 (de) 1988-07-06
DK690287D0 (da) 1987-12-29
AR240173A1 (es) 1990-02-28
SG2992G (en) 1992-03-20
BR8707105A (pt) 1988-08-02
MX169073B (es) 1993-06-21
EP0273460A3 (en) 1988-11-30
JPH0558474B2 (de) 1993-08-26
JPS63308086A (ja) 1988-12-15
DK690287A (da) 1988-07-01

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