EP0978554B1 - Neutrale Rostinhibitore enthaltende Turbin- und R&O-Öle - Google Patents

Neutrale Rostinhibitore enthaltende Turbin- und R&O-Öle Download PDF

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Publication number
EP0978554B1
EP0978554B1 EP99305884A EP99305884A EP0978554B1 EP 0978554 B1 EP0978554 B1 EP 0978554B1 EP 99305884 A EP99305884 A EP 99305884A EP 99305884 A EP99305884 A EP 99305884A EP 0978554 B1 EP0978554 B1 EP 0978554B1
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EP
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Prior art keywords
turbine
oil
oils
composition according
rust inhibitor
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EP99305884A
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English (en)
French (fr)
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EP0978554A2 (de
EP0978554A3 (de
Inventor
David Kenvyn Walters
Helen Theresa Ryan
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Afton Chemical Ltd
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Afton Chemical Ltd
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • 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
    • C10M139/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing atoms of elements not provided for in groups C10M127/00 - C10M137/00
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • 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
    • C10M129/68—Esters
    • C10M129/72—Esters of polycarboxylic acids
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    • 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
    • C10M129/68—Esters
    • C10M129/76—Esters containing free hydroxy or carboxyl groups
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    • 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
    • C10M133/16—Amides; Imides
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    • 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
    • C10M133/44—Five-membered ring containing nitrogen and carbon only
    • C10M133/46—Imidazoles
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    • C10M133/52—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of 30 or more atoms
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    • C10M135/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium containing a sulfur-to-oxygen bond
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    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
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    • C10M2203/102—Aliphatic fractions
    • C10M2203/1025—Aliphatic fractions used as base material
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    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/104—Aromatic fractions
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    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/106—Naphthenic fractions
    • C10M2203/1065—Naphthenic fractions used as base material
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    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/108—Residual fractions, e.g. bright stocks
    • C10M2203/1085—Residual fractions, e.g. bright stocks used as base material
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/286—Esters of polymerised unsaturated acids
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C—CHEMISTRY; METALLURGY
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty carbon atoms]
    • C—CHEMISTRY; METALLURGY
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    • C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty carbon atoms]
    • C10M2215/082—Amides [having hydrocarbon substituents containing less than thirty carbon atoms] containing hydroxyl groups; Alkoxylated derivatives
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    • C10M2215/086—Imides [having hydrocarbon substituents containing less than thirty carbon atoms]
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/12—Partial amides of polycarboxylic acids
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    • C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
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    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts

Definitions

  • the present invention relates to turbine and rust and oxidation (R&O) oils (hereinafter “turbine oils”) having improved wet filterability without detriment to hydrolytic stability.
  • turbine oils turbine and rust and oxidation oils
  • Steam and gas turbine oils are top-quality rust- and oxidation-inhibited oils.
  • Steam turbines employ steam that enters the turbine at high temperature and pressure and expands across both rotating and fixed blades. Only the highest-quality lubricants are able to withstand the wet conditions, high temperatures and long periods of service associated with steam turbine operation. In gas turbines, they must withstand contact with very hot surfaces, often with intermittent operation and periods of nonuse. Therefore, to be effective, both types of oil must have, in addition to good corrosion protection and demulsibility, outstanding resistance to oxidation, which includes a minimum tendency to form deposits in critical areas of the system.
  • a finished turbine oil will contain only the base oil, antioxidants, rust inhibitors, demulsifiers, corrosion inhibitors and diluents, if necessary.
  • Prior art turbine oils contain acidic rust inhibitors.
  • acidic rust inhibitors of the type taught in U.S. Patent No. 4,101,429, have been used in turbine oils.
  • turbine oils containing acidic rust inhibitors exhibit satisfactory rust performance, they tend to interact with, for example, water and metal detergents present as contaminants producing particulates, precipitates and/or sludge.
  • Acidic rust inhibitors thus create problems with deposit formation and filterability upon exposure to contaminants such as water and/or metal detergents. The resulting filterability problems and deposit formation are expensive and highly undesirable.
  • US-A-2971912 discloses antioxidants for use in synthetic-ester lubricants suitable for use in gas turbines.
  • EP-A-776964 discloses ZDDP-containing hydraulic fluids, which exhibit improved wet-filtrability.
  • neutral rust inhibitors in the present specification, means rust inhibitors that are essentially free of a -COOH functional group.
  • the present invention provides a composition which is suitable for use as a turbine or rust and oxidation (R&O) oil and which is substantially free of acidic rust inhibitor, which composition comprises:
  • mineral oils used in the present invention are commonly referred to as Group II, Group III oils.
  • the viscosity index is assessed in accordance with IP 226.
  • the saturates and sulfur content are assessed by mass spectroanalysis.
  • major portion means that the composition contains at least 50% by weight base oil.
  • the turbine oils of the present invention have good rust performance, good wet filterability and good performance in thermal stability tests where water and/or metal detergents are present, e.g. the ASTM D 2619 and ASTM D 4310 tests.
  • hydrocarbyl groups and moieties may be straight- or branched-chain.
  • turbine oils are produced which are substantially free of metal detergents.
  • substantially free means that no acidic rust inhibitors or metal detergents are purposefully added to the finished oil although there may be some present due to contamination or as an impurity.
  • R and R' in the at least one neutral rust inhibitor of formula R(COOR') n are each independently hydrocarbyl groups or hydroxyhydrocarbyl groups containing 8 to 20 carbon atoms.
  • the maximum number of groups COOR' which are present on the hydrocarbyl or hydroxyhydrocarbyl group R will vary depending on the number of carbon atoms in R. For example, if R is a hydrocarbyl group containing only one carbon atom, the maximum possible value of n will be 4. When R is a hydroxyhydrocarbyl group containing one carbon atom the maximum value of n will be 3.
  • the hydrocarbyl esters can be prepared by conventional esterification procedures from a suitable alcohol and an acid, acid halide, acid anhydride or mixtures thereof.
  • the esters of the invention can be prepared by conventional methods of transesterification.
  • essentially free it is meant that the starting acids, acid halides, acid anhydrides or mixtures thereof used in preparing the neutral rust inhibitors are reacted with an amount of alcohol sufficient to theoretically convert all of the -COOH groups to esters.
  • the neutral rust inhibitor will have a TAN of less than 10mgKOH/g.
  • Preferred esters include, but are not limited to, octyloleyl malate, dioleylmalate, pentaerythritol monooleate and glycerol monooleate.
  • the radical Z may be, for example, 1-methylpentadecyl, 1-propyltridecenyl, 1-pentyltridecenyl, 1-tridecenylpentadecenyl or I-tetradecyleicosenyl.
  • the number of carbon atoms in the groups R 1 and R 2 is from 16 to 28 and more commonly 18 to 24. It is especially preferred that the total number of carbon atoms in R 1 and R 2 is 20 to 22.
  • the preferred compound (B) is 3-C 18-24 alkenyl-2,5-pyrrolidindione, i.e. a compound in which the average number of carbon atoms in the alkenyl group is from 18 to 24.
  • the compound (B) has a titratable acid number (TAN) of 80 to 140 mgKOH/g, preferably 110mgKOH/g.
  • TAN titratable acid number
  • the compounds (B) are commercially available or may be made by the application or adaptation of known techniques (see for example EP-A-0389237).
  • Lubricating oils contemplated for use in this invention are hydro-processed mineral oils. Suitable lubricating oils include basestocks produced by hydrocracking (rather than solvent extracting) the aromatic and polar components of crude oil. In general, the lubricating oils will have a kinematic viscosity ranging from 1 x 10 -6 m 2 /s to 40 x 10 -6 m 2 /s (1 to 40 cSt) at 100°C.
  • the mineral oils useful in this invention include all common mineral oil base stocks. This would include oils that are naphthenic or paraffinic in chemical structure. They may be hydrotreated or hydro-refined, dewaxed by chilling or catalytic dewaxing processes, or hydrocracked.
  • the mineral oil may be produced from natural crude sources or be composed of isomerized wax materials or residues of other refining processes.
  • the mineral oils will have kinematic viscosities of from 2 x 10 -6 m 2 /s to 12 x 10 -6 m 2 /s (2 cSt to 12 cSt) at 100°C.
  • the preferred mineral oils have kinematic viscosities of from 3 x 10 -6 m 2 /s to 10 x 10 -6 m 2 /s (3 to 10 cSt), and most preferred are those mineral oils with viscosities of 5 x 10 -6 m 2 /s to 9 x 10 -6 m 2 /s (5 to 9 cSt) at 100°C.
  • the base oils have a viscosity index (VI) of greater than 80, a saturates content of greater than 90 wt% and sulfur content of 0.5 wt% or less.
  • the oils have a sulfur content of 0.3 wt% or less, more preferably 0.1 wt% or less.
  • the turbine and R&O oils of the present invention may be prepared by simple blending of the various components with a suitable base oil.
  • the additive component(s) used in practice of this invention may be provided as a concentrate for formulation into a turbine or R&O oil ready for use.
  • Concentrates of the present invention containing both neutral rust inhibitor(s) and compound (B) tend to impart greater rust protection in the presence of sea water (ASTM D665B) than concentrates lacking the compound (B), and are typically added to the base oil at a treat rate of from 0.2 to 2%, for example, 0.3 to 2%, by weight based on the weight of the finished oil.
  • the neutral rust inhibitor(s) are generally present in the additive concentrate in an amount of from 10 to 60 percent by weight, based on the total weight of the concentrate, while compound (B) is generally present in the additive concentrate in an amount of from 1 to 15 percent by weight.
  • the concentrate may comprise, in addition to the additive components, a solvent or diluent for the additive components.
  • the solvent or diluent should be miscible with and/or capable of dissolving in the turbine base oil to which the concentrate is to be added. Suitable solvents and diluents are well known.
  • the solvent or diluent may be the turbine base oil itself
  • the concentrate may suitably include any of the conventional additives used in turbine oils. The proportions of each component of the concentrate are controlled by the intended degree of dilution.
  • the neutral rust inhibitor(s) should be present in the finished oil in an amount of at least about 0.10, and preferably from 0.10 to 0.45 percent by weight.
  • compound (B) should be present in the finished oil in an amount of 0.008 to 0.25 percent by weight.
  • the additive concentrates and finished oils of the present invention may further contain additional additives such as phosphorus-containing additives and sulfurized esters.
  • additional additives such as phosphorus-containing additives and sulfurized esters.
  • Preferred phosphorus containing additives include amine salts of acid phosphates and phosphorus and sulfur containing compounds.
  • additives commonly used in turbine and R&O oils may be included in the turbine and R&O oils of the present invention. These include antioxidants, demulsifiers and corrosion inhibitors. These additives, when present, are used in amounts conventionally used in turbine oil packages.
  • Turbine Oil Concentrate 1 represents a formulation within the scope of the present invention, i.e., it contains a neutral rust inhibitor and compound (B) and is substantially free of acidic rust inhibitor.
  • Turbine Oil Concentrate 2 represents an additive concentrate outside of the scope of the present invention in that it contains an acidic rust inhibitor. All of the samples used similar conventional additives (e.g., antioxidants, demulsifiers and corrosion inhibitors) in similar amounts.
  • Turbine oils are prepared by adding additive concentrates as described above to base oils of various viscosities at a treat rate of 0.8 percent by weight.
  • the base oil used was a hydro-processed (HP) mineral oils having a VI of at least 98, a saturates level of at least 98% and a sulfur content of less than 0.01 wt%.
  • a solvent refined (SR) base oil was also used.
  • the finished oils were tested for wet filterability using the Shell Filtration Test and for rust performance using the ASTM D 665B rust test.
  • the Shell Filtration Test is intended to evaluate the filterability characteristics of oil based hydraulic fluids with and without calcium and/or water contamination.
  • the fluids as blended and the contaminated fluids are each tested in duplicate as follows. After pre-treatment at 70 °C, 300 ml of test oil are filtered through a 1.2 micron Millipore membrane using a 650 mm Hg vacuum. The fluid temperature is not controlled but should be in the range of 19 to 26 °C. The times for each successive 100 ml of fluid to filter, or for the filter membrane to block, are noted. In the following Tables the results of the Shell Filtration Test are indicated as either PASS, meaning that all 300 ml of oil passed through the filter, or FAIL, meaning that the filter became blocked.
  • Shell Filtration Test results Additive Concentrate Base Oil - ISO # Shell Filtration Test D665B rust test TO1 HP - 32 PASS PASS TO2 SR - 32 FAIL PASS TO2 SR- 46 FAIL PASS TO1 HP - 68 PASS PASS TO2 SR - 68 FAIL PASS TO1 HP -100 PASS PASS
  • compositions of the present invention exhibit both passing Shell Filtration results and ASTM D 665B results. Further, it is clear from the above Table 2 that turbine oils (TO2) containing sufficient amounts of acidic rust inhibitor to pass the ASTM D 665B rust test fail the Shell Filtration Test.
  • TO2 turbine oils
  • turbine oils In handling, i.e., storing and transporting, of turbine oils, the turbine oil often comes into contact with residual lubricating fluids containing acidic rust inhibitors and/or metal detergents or turbine oils containing acidic rust inhibitors.
  • the turbine oils of the present invention enable passing Shell Filtration Test results upon contamination with these sources of acidic rust inhibitors and/or metal detergents.
  • Turbine oils containing components (A) and (B) of the present invention have been found to exhibit excellent thermal stability in tests with water present and passing rust test performance.
  • ASTM D 4310 is used to determine the tendency of inhibited mineral oils, especially turbine oils, to form sludge during oxidation in the presence of oxygen, water, and copper and iron metals at an elevated temperature.
  • an oil sample is reacted with oxygen in the presence of water and an iron-copper catalyst coil for 1000 hours. The oil is then analysed to determine the total acid number (TAN), the weight of sludge and loss of copper and iron from the catalyst.
  • Table 3 shows the hydrolytic stability in the presence of water of turbine oils containing the combination of additives (A) and (B) of the present invention.
  • the formulated oil included pentaerythritol monooleate at a concentration of 0.18 wt % and 3-C 18-24 alkenyl-2,5-pyrrolidindione at a concentration of 0.04 wt%.
  • the base oil was a hydro-processed basestock having a viscosity index of 99, a saturates content of 99.5 wt % and a sulfur content of 0.02 wt %.
  • the additive combinations used in the present invention are especially effective in hydro-processed mineral oils.
  • Table 4 demonstrates the exceptional properties of the additive systems used in the present invention in these hydro-processed mineral oils.
  • the following formulated oils contained identical additive concentrates (TO1).
  • the solvent refined mineral oils (SR-32 and SR-68) contained 0.82 wt% of TO1, while the hydro-processed mineral oils (HP-32, HP-68 and HP-100) contained 0.80 wt% of TO1.
  • the formulated oils were tested in the Rotating Bomb Oxidation Test (RBOT) defined in ASTM D-2272.
  • the RBOT is a test for estimating the oxidation stability of turbine oils.
  • test oil, water and copper catalyst coil contained in a covered glass container, are placed in a bomb equipped with a recording pressure gauge.
  • the bomb is charged with oxygen to a pressure of 620 kPa, placed in a constant-temperature oil bath set at 150 °C, and rotated axially at 100 rpm at an angle of 30° from the horizontal.
  • the number of minutes required to reach a specific drop in gauge pressure is the oxidation stability of the test sample.
  • the formulated oils containing solvent refined basestocks were also tested in the Lifetime Turbine Oil Oxidation Test (Life TOST) as defined in ASTM D-943.
  • the Life TOST is used to evaluate the oxidation stability of inhibited steam turbine oils.
  • the oil sample is reacted with oxygen in the presence of water and an iron-copper catalyst at 95 °C. The test continues until the measured total acid number of the oil is 2.0 mg KOH/g.
  • the number of test hours required for the oil to reach 2.0 mg KOH/g is the "oxidation lifetime".
  • the RBOT for base oil alone would be in the region of 15-30 minutes.
  • Base oil RBOT (minutes) Life TOST (hours) SR-32 602.5 6188 (avg. of 2 runs) HP-32 1199 (avg. of 3 runs) SR-68 707.5 6032 (avg. of 2 runs) HP-68 1292 (avg. of 3 runs) HP-100 1253 (avg. of 3 runs)

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Claims (9)

  1. Zusammensetzung, die für die Anwendung als Turbinenöl oder Rost- und Oxidationsinhibitionsöl (R&O-Öl) geeignet und im Wesentlichen frei von sauren Rostinhibitoren ist, wobei die Zusammensetzung umfasst:
    (a) eine Hauptmenge eines hydroprozessierten Mineralöls, das einen Viskositätsindex von über 80, eine Gehalt an gesättigten Verbindungen von über 90 Gew.-% und einen Schwefelgehalt von 0,5 Gew.-% oder darunter aufweist;
    (b) mindestens 0,10 Gew.-% mindestens eines neutralen Rostinhibitors, bei dem es sich um einen Hydrocarbylester der Formel R(COOR')n handelt, worin R und R' jeweils unabhängig Hydrocarbylgruppen oder Hydroxyhydrocarbylgruppen mit bis zu 40 Kohlenstoffatomen darstellen und n von 1 bis 4 ist; und
    (c) eine Verbindung (B) der Formel:
    Figure 00140001
    worin Z eine Gruppe R1R2CH- darstellt, worin R1 und R2 jeweils unabhängig Hydrocarbylgruppen sind, enthaltend bis zu 34 Kohlenstoffatome, wobei die Gesamtzahl der Kohlenstoffatome in den Gruppen R1 und R2 von 11 bis 35 beträgt.
  2. Zusammensetzung gemäß Anspruch 1, worin der mindestens eine neutrale Rostinhibitor in einer Menge von 0,10 bis 0,45 Gew.-% vorliegt.
  3. Zusammensetzung gemäß Anspruch 1 oder 2, worin R und R' jeweils unabhängig Hydrocarbylgruppen oder Hydroxyhydrocarbylgruppen darstellen, enthaltend 8 bis 20 Kohlenstoffatome.
  4. Zusammensetzung gemäß einem der vorstehenden Ansprüche, zusätzlich umfassend mindestens ein Additiv, ausgewählt unter geschwefelten Estern, Phosphor enthaltenden Additiven, Phosphor und Schwefel enthaltenden Additiven, Antioxidantien, Demulgatoren und Korrosionsinhibitoren.
  5. Zusammensetzung gemäß einem der vorstehenden Ansprüche, worin die Gesamtzahl der Kohlenstoffatome in den Gruppen R1 und R2 18 bis 24 beträgt.
  6. Zusammensetzung gemäß einem der vorstehenden Ansprüche, worin die Verbindung (B) ein 3-C18-24-alkenyl-2,5-pyrrolidindion ist.
  7. Zusammensetzung gemäß einem der vorstehenden Ansprüche, umfassend von 0,10 bis 0,45 Gew.-% des mindestens einen neutralen Rostinhibitors und von 0,008 bis 0,25 Gew.-% der Verbindung (B).
  8. Verwendung in einem Turbinenöl oder Rost- und Oxidationsinhibitionsgrundöl (R&O-Grundöl), das im Wesentlichen frei von sauren Rostinhibitoren ist und bei dem es sich um ein hydroprozessiertes Mineralöl handelt, das einen Viskositätsindex von größer 80, einen Gehalt an gesättigten Verbindungen von größer 90 Gew.-% und einen Schwefelgehalt von 0,5 Gew.-% oder darunter aufweist,
    von mindestens 0,10 Gew.-% mindestens eines neutralen Rostinhibitors, wie in einem der Ansprüche 1 bis 3 definiert, und einer Verbindung (B), wie in einem der Ansprüche 1, 5 oder 6 definiert,
    zur Verbesserung der Nassfiltrierbarkeit des Grundöls, zur Verbesserung der hydrolytischen Stabilität des Grundöls und/oder zur Verringerung von Schlamm, Präzipitaten und/oder Teilchen im Grundöl durch Reaktion mit Wasser und/oder Metalldetergentien.
  9. Verfahren des Betriebs einer Dampf- oder Gasturbine, worin die Turbine mit einer Zusammensetzung nach einem der Ansprüche 1 bis 7 geschmiert wird.
EP99305884A 1998-08-04 1999-07-26 Neutrale Rostinhibitore enthaltende Turbin- und R&O-Öle Expired - Lifetime EP0978554B1 (de)

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GBGB9816951.9A GB9816951D0 (en) 1998-08-04 1998-08-04 Turbine and R&O oils containing neutral rust inhibitors

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US6645920B1 (en) 2002-11-14 2003-11-11 The Lubrizol Corporation Additive composition for industrial fluid
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CN101511984A (zh) * 2006-09-11 2009-08-19 昭和砚壳石油株式会社 润滑油组合物
JP5180466B2 (ja) * 2006-12-19 2013-04-10 昭和シェル石油株式会社 潤滑油組成物
JP5838679B2 (ja) * 2011-09-13 2016-01-06 東レ・ファインケミカル株式会社 洗浄液
JP6980627B2 (ja) * 2018-09-19 2021-12-15 三菱重工業株式会社 油のスラッジ生成性判定方法
CN111575088A (zh) * 2019-02-19 2020-08-25 中国石油天然气股份有限公司 一种防锈剂组合物
CN114276853A (zh) * 2021-12-29 2022-04-05 中海油气(泰州)石化有限公司 一种高过滤性多用途蒸汽轮机油复合添加剂组合物

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US5089157A (en) * 1991-03-18 1992-02-18 Nalco Chemical Company Hot melt lubricant having good washability
JP3401349B2 (ja) * 1994-12-07 2003-04-28 新日本石油株式会社 潤滑油組成物
JP3935982B2 (ja) * 1995-10-19 2007-06-27 出光興産株式会社 油圧作動油組成物
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SG85123A1 (en) 2001-12-19
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CN1100858C (zh) 2003-02-05
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GB9816951D0 (en) 1998-09-30
CA2276920A1 (en) 2000-02-04

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