EP1844128B1 - Verfahren zur regulierung der viskosität - Google Patents

Verfahren zur regulierung der viskosität Download PDF

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Publication number
EP1844128B1
EP1844128B1 EP05853765.5A EP05853765A EP1844128B1 EP 1844128 B1 EP1844128 B1 EP 1844128B1 EP 05853765 A EP05853765 A EP 05853765A EP 1844128 B1 EP1844128 B1 EP 1844128B1
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EP
European Patent Office
Prior art keywords
viscosity
viscosity modifier
lubricating composition
crankcase
lubricating
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EP05853765.5A
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English (en)
French (fr)
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EP1844128A1 (de
Inventor
Lewis D. Breon
Jayram D. Patel
Roy Sambuchino
Mark F. Wilkes
Simon Griffiths
David Price
Michael P. Gahagan
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Lubrizol Corp
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Lubrizol Corp
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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
    • C10M149/00—Lubricating compositions characterised by the additive being a macromolecular compound containing nitrogen
    • C10M149/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • 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
    • C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
    • 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
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/40—Low content or no content compositions
    • C10N2030/42—Phosphor free or low phosphor content compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/68—Shear stability
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/02—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00 having means for introducing additives to lubricant

Definitions

  • lubricating oils It is well known for lubricating oils to contain a number of additives used to protect the engine from wear and provide viscosity control.
  • Common additives for engine lubricating oils include zinc dialkyldithiophosphate (ZDDP) an antiwear additive. It is believed that ZDDP antiwear additives protect the engine by forming a protective film on metal surfaces.
  • ZDDP antiwear additives protect the engine by forming a protective film on metal surfaces.
  • Viscosity modifiers with a number average molecular weight above 100,000 are known in crankcase applications as viscosity modifiers because they help control high temperature viscometrics in multi-grade lubricants. Viscosity modifiers in various applications are known from, e.g., U.S. Patent 5,112,509 .
  • any reduction in the performance of catalytic converters caused by phosphorus poisoning tends to result in increased amounts of greenhouse gases such as nitric oxide and/or ash formation.
  • reducing the amount of ZDDP will increase the amount of wear in an engine crankcase.
  • This invention provides a method of lubricating an internal combustion engine comprising a crankcase and at least one of a gear and a wet-clutch, said method comprising supplying to said crankcase and to at least one of the gear and wet-clutch a lubricating composition comprising: (a) an oil of lubricating viscosity; and (b) a viscosity modifier with a number average molecular weight from 1000 to 75,000, wherein the lubricating composition has a SAE viscosity grade from XW-Y, wherein X is from 0 to 20 and Y is from 20 to 50; and wherein the lubricating composition has a phosphorus content from a metal hydrocarbyl dithiophosphate of 0.12 wt % or less.
  • the internal combustion engine is suitable for motorcycles for example motorcycles with a 4-stroke internal combustion engine.
  • Oils of lubricating viscosity may also be defined as specified in the American Petroleum Institute (API) Base Oil Interchangeability Guidelines.
  • the oil of lubricating viscosity comprises an API Group I, II, III, IV, V, VI oil or mixtures thereof, and in another embodiment API Group II, III, IV oil or mixtures thereof.
  • the oil of lubricating viscosity is a Group III or IV base oil and in another embodiment a Group IV base oil. If the oil of lubricating viscosity is an API Group II, III, IV, V or VI oil there may be up to 40 wt % and in another embodiment up to a maximum of 5 wt % of the lubricating oil an API Group I oil present.
  • Y is chosen from 20, 25, 30, 35, 40, 45 or 50.
  • the oil of lubricating viscosity in one embodiment is present from 2 wt % to 99.5 wt % of the lubricating composition, in another embodiment from 29 wt % to 98.25 wt % of the lubricating composition and in another embodiment from 40 wt % to 97 wt % of the lubricating composition.
  • suitable amounts of an oil of lubricating viscosity include 55 wt %, 60 wt %, 65 wt %, 70 wt %, 75 wt % or 80 wt %.
  • the viscosity modifier in one embodiment is present from 0.5 wt % to 95 wt %, in another embodiment 0.75 wt % to 70 wt % and in another embodiment 1 wt % to 40 wt % of the lubricating composition.
  • a suitable amount of viscosity modifier include 8 wt %, 10 wt %, 12 wt %, 14 wt %, 16 wt %, 18 wt %, 20 wt %, 22 wt %, 24 wt %, 30 wt %, 35 wt %, or 55 wt %.
  • the viscosity modifiers (which may also be dispersant viscosity modifiers, as further described below) are known in the art and commercially available from a number of corporations, including The Lubrizol Corporation, Degussa AG and Rohmax GmbH.
  • the viscosity modifier has a Shear Stability Index (SSI) as determined by CEC L-45-A-99 of 22 or less, 20 or less or 18 or less.
  • SSI Shear Stability Index
  • the viscosity SSI is 2 or more or 4 or more. Examples of suitable ranges of SSI include 2 to 22 or 4 to 18.
  • the poly(meth)acrylate polymeric dispersant viscosity modifier includes a copolymer derived from a (meth)acrylate monomer containing an alkyl group with 1 to 30 carbon atoms, in another embodiment 1 to 26 carbon atoms and in another embodiment 1 to 20 carbon atoms.
  • the alkyl group includes mixtures derived from an alcohol containing 1 to 4 carbon atoms, 8 to 10 carbon atoms, 12 to 14 carbon atoms, 12 to 15 carbon atoms, 16 to 18 carbon atoms or 16 to 20 carbon atoms. Examples of commercially available alcohol mixtures include the following products sold under the brand names of DobanolTM 25, NeodolTM 25, LialTM 125, and AlchemTM 125. In one embodiment the alcohol is a single alcohol, i.e., not a mixture.
  • the (meth)acrylate monomer includes those derived from natural or synthetic sources. When derived by synthetic sources the (meth)acrylate monomer may be prepared using known direct esterification and/or transesterification processes.
  • Upper limits on the amount of methyl (meth)acrylate include 40 wt % of the poly(meth)acrylate, in another embodiment 30 wt% of the poly(meth)acrylate and in another embodiment 20 wt % of the poly(meth)acrylate.
  • the composition further contains a metal hydrocarbyl dithiophosphate.
  • the amount of the metal hydrocarbyl dithiophosphate present is enough to provide a phosphorus content in the lubricating composition from said metal hydrocarbyl dithiophosphate of 0.12 wt % or less.
  • the phosphorus content in the lubricating composition from a metal hydrocarbyl dithiophosphate is below 0.1 wt %, in another embodiment below 0.085 wt %, in another embodiment below 0.06 wt % or lower.
  • the lower limit of the phosphorus content in the lubricating composition from a metal hydrocarbyl dithiophosphate is 0 ppm or higher, in another embodiment 50 ppm or higher, in another embodiment 125 ppm or higher and in another embodiment 200 ppm or higher. Examples of suitable ranges include 50 ppm to 0.1 wt % or 125 ppm to 0.085 wt %.
  • Examples of a metal hydrocarbyl dithiophosphate include zinc dihydrocarbyl dithiophosphates (often referred to as ZDDP, ZDP or ZDTP).
  • ZDDP zinc dihydrocarbyl dithiophosphates
  • ZDP zinc dihydrocarbyl dithiophosphates
  • ZDTP zinc dihydrocarbyl dithiophosphates
  • the number of carbon atoms of each hydrocarbyl group is 2 to 30, 3 to 14 or 4 to 10.
  • Suitable zinc hydrocarbyl dithiophosphates compounds may include those with a hydrocarbyl group of octyl, 2-ethylhexyl, methylpentyl-isopropyl. 2-ethylhexyl-isopropyl, pentyl-isobutyl or mixtures thereof.
  • the composition optionally includes at least one additional performance additive.
  • the additional performance additive includes at least one of metal deactivators, detergents, dispersants, extreme pressure agents, antiwear agents, antioxidants, corrosion inhibitors, foam inhibitors, demulsifiers, pour point depressants, friction modifiers, seal swelling agents and mixtures thereof.
  • the additional performance additives may be used alone or in combination.
  • the total combined amount of the other performance additive compounds present ranges from 0 wt % to 30 wt %, in another embodiment from 1 wt % to 25 wt % and in another embodiment 2 wt % to 20 wt % or from 3 wt % to 10 wt % of the lubricating composition.
  • the other performance additives may be present, it is common for the other additional performance additives to be present in different amounts relative to each other.
  • Detergents include neutral or overbased, Newtonian or non-Newtonian, basic salts of alkali, alkaline earth and transition metals with one or more of a phenate, a sulphurised phenate, a sulphonate, a carboxylic acid, a phosphorus acid, a mono- and/or a di- thiophosphoric acid, a saligenin, an alkylsalicylate, a salixarate or mixtures thereof.
  • Dispersants include N-substituted long chain alkenyl succinimide as well as post-treated versions thereof.
  • Post-treated dispersants include those further treated by reaction with materials such as urea, boron, thiourea, dimercaptothiadiazoles, carbon disulphide, aldehydes, ketones, carboxylic acids, hydrocarbon-substituted succinic anhydrides, nitriles, epoxides and phosphorus compounds.
  • Lubricating compositions are prepared by blending additives as shown in Table 1 into a 10W-40 lubricant.
  • the lubricating compositions have a phosphorus content in the lubricating composition from a metal hydrocarbyl dithiophosphate of less than 0.12 wt %.
  • the compositions prepared are: Table 1 Example Polymer Type Number Average Molecular Weight REF1 Commercially available Olefin copolymer Over 100,000 REF2 Commercially available Olefin copolymer 84,000 EX1 Polymethacrylate 15,000
  • the presence of the viscosity modifier with a number average molecular weight from 1000 to 75,000 has acceptable shear stability and is suitable for viscosity control in an internal combustion engine comprising a crankcase and at least one of a gear and a wet-clutch. Further, the viscosity modifier is capable of imparting at least one of wear control, acceptable fuel economy, acceptable high temperature viscometrics and increased lubricant oil service drains. Furthermore, the results indicate that a polymer with a low Shear Stability Index of 26 and a number average molecular weight of above 75,000 provides poor a viscosity control performance.
  • hydrocarbyl substituent or “hydrocarbyl group,” as used herein are used in its ordinary sense, which is well-known to those skilled in the art. Specifically, it refers to a group primarily composed of carbon and hydrogen atoms and attached to the remainder of the molecule through a carbon atom and which does not exclude the presence of other atoms or groups in a proportion insufficient to detract from the molecule having a predominantly hydrocarbon character. In general, no more than two, in one aspect no more than one, non-hydrocarbon substituent will be present for every ten carbon atoms in the hydrocarbyl group; typically, there will be no non-hydrocarbon substituents in the hydrocarbyl group. A more detailed definition of the terms “hydrocarbyl substituent” or “hydrocarbyl group,” is provided in US Patent Number 6,583,092 .
  • each chemical or composition referred to herein should be interpreted as being a commercial grade material which may contain the isomers, by-products, derivatives, and other such materials which are normally understood to be present in the commercial grade. It is to be understood that the upper and lower amount, range, and ratio limits set forth herein may be independently combined. Similarly, the ranges and amounts for each element of the invention may be used together with ranges or amounts for any of the other elements.

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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)

Claims (11)

  1. Verfahren zum Schmieren eines Verbrennungsmotors, der ein Kurbelwellengehäuse sowie ein Getriebe und/oder eine Nasskupplung umfasst, wobei das Verfahren das Zuführen einer schmierenden Zusammensetzung zu dem Kurbelwellengehäuse und zu dem Getriebe und/oder der Nasskupplung umfasst, die Folgendes umfasst:
    (a) ein Öl mit schmierender Viskosität und
    (b) einen Viskositätsmodifizierer mit einem zahlengemittelten Molekulargewicht von 1000 bis 75.000, wobei es sich bei dem Viskositätsmodifizierer um ein Poly(meth)acrylat handelt, wobei der Viskositätsmodifizierer einen mittels CEC L-45-A-99 bestimmten Scherstabilitätsindex (SSI) von 22 oder weniger aufweist,
    wobei die schmierende Zusammensetzung einen SAE-Viskositätsgrad von XW-Y aufweist, wobei X 0 bis 20 ist und Y 20 bis 50 ist, und wobei die schmierende Zusammensetzung einen Phosphorgehalt aus einem Metallhydrocarbyldithiophosphat von 0,12 Gew.-% oder weniger aufweist, wobei es sich bei dem Verbrennungsmotor um einen Viertakt-Motorradmotor handelt.
  2. Verfahren nach Anspruch 1, wobei der Verbrennungsmotor ein allgemeines Ölreservoir aufweist, aus dem dieselbe schmierende Zusammensetzung dem Kurbelwellengehäuse und dem Getriebe und/oder der Nasskupplung zugeführt wird.
  3. Verfahren nach Anspruch 1, wobei die schmierende Zusammensetzung dem Kurbelwellengehäuse und dem Getriebe oder mehreren Getrieben zugeführt wird.
  4. Verfahren nach Anspruch 1, wobei die schmierende Zusammensetzung dem Kurbelwellengehäuse und der Nasskupplung zugeführt wird.
  5. Verfahren nach Anspruch 1, wobei die schmierende Zusammensetzung dem Kurbelwellengehäuse und sowohl dem Getriebe (bzw. den Getrieben) als auch der Nasskupplung zugeführt wird.
  6. Verfahren nach Anspruch 1, wobei der Viskositätsmodifizierer ein zahlengemitteltes Molekulargewicht von 2000 bis 60.000 oder von 8000 bis 40.000 aufweist.
  7. Verfahren nach Anspruch 1, wobei der Viskositätsmodifizierer ein zahlengemitteltes Molekulargewicht von 1000 bis 20.000 oder von 25.000 bis 40.000 aufweist.
  8. Verfahren nach Anspruch 1, wobei es sich bei dem Viskositätsmodifizierer um ein funktionalisiertes Poly(meth)acrylat handelt.
  9. Verfahren nach Anspruch 8, wobei das Poly(meth)acrylat mit einem stickstoffhaltigen Monomer funktionalisiert ist.
  10. Verfahren nach Anspruch 1, wobei der Viskositätsmodifizierer in einer Menge von 0,5 Gew.-% bis 95 Gew.-% oder 1 Gew.-% bis 40 Gew.-% der schmierenden Zusammensetzung vorhanden ist.
  11. Verfahren nach Anspruch 1, wobei der Viskositätsmodifizierer einen mittels CEC L-45-A-99 bestimmten Scherstabilitätsindex (SSI) von 4 bis 18 aufweist.
EP05853765.5A 2004-12-22 2005-12-13 Verfahren zur regulierung der viskosität Active EP1844128B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63843704P 2004-12-22 2004-12-22
PCT/US2005/044925 WO2006068866A1 (en) 2004-12-22 2005-12-13 Method of viscosity control

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EP1844128A1 EP1844128A1 (de) 2007-10-17
EP1844128B1 true EP1844128B1 (de) 2017-11-08

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US (2) US20080096778A1 (de)
EP (1) EP1844128B1 (de)
JP (1) JP5004237B2 (de)
CN (1) CN101120077B (de)
ES (1) ES2648996T3 (de)
WO (1) WO2006068866A1 (de)

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CN101120077B (zh) 2012-07-04
CN101120077A (zh) 2008-02-06
JP2008525583A (ja) 2008-07-17
US20100212624A1 (en) 2010-08-26
ES2648996T3 (es) 2018-01-09
US20080096778A1 (en) 2008-04-24
WO2006068866A9 (en) 2008-02-21
JP5004237B2 (ja) 2012-08-22
WO2006068866A1 (en) 2006-06-29
EP1844128A1 (de) 2007-10-17

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