EP3841190A1 - Lubricant composition - Google Patents

Lubricant composition

Info

Publication number
EP3841190A1
EP3841190A1 EP19752696.5A EP19752696A EP3841190A1 EP 3841190 A1 EP3841190 A1 EP 3841190A1 EP 19752696 A EP19752696 A EP 19752696A EP 3841190 A1 EP3841190 A1 EP 3841190A1
Authority
EP
European Patent Office
Prior art keywords
lubricant composition
esters
hydroxytyrosol
composition according
base oil
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.)
Granted
Application number
EP19752696.5A
Other languages
German (de)
French (fr)
Other versions
EP3841190B1 (en
Inventor
Karl EGERSDÖRFER
Thomas Kilthau
Daniel CHALL
Stefan Seemeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Klueber Lubrication Muenchen GmbH and Co KG
Original Assignee
Klueber Lubrication Muenchen SE and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Klueber Lubrication Muenchen SE and Co KG filed Critical Klueber Lubrication Muenchen SE and Co KG
Publication of EP3841190A1 publication Critical patent/EP3841190A1/en
Application granted granted Critical
Publication of EP3841190B1 publication Critical patent/EP3841190B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/36—Esters of polycarboxylic acids
    • 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
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/38—Esters of polyhydroxy 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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
    • C10M107/34—Polyoxyalkylenes
    • 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
    • C10M129/04—Hydroxy compounds
    • C10M129/10—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic ring
    • C10M129/14—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic ring containing at least 2 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
    • 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
    • C10M2203/104—Aromatic fractions
    • C10M2203/1045—Aromatic fractions used as base material
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C10M2203/106—Naphthenic fractions
    • C10M2203/1065—Naphthenic 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
    • 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
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • 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
    • C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
    • C10M2207/0406—Ethers; Acetals; Ortho-esters; Ortho-carbonates used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
    • C10M2207/124—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms containing hydroxy groups; Ethers 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/285—Esters of aromatic polycarboxylic acids
    • C10M2207/2855—Esters of aromatic polycarboxylic acids used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C10M2207/289—Partial esters containing free 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/30—Complex esters, i.e. compounds containing at leasst three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compounds: monohydroxyl compounds, polyhydroxy xompounds, monocarboxylic acids, polycarboxylic acids or hydroxy carboxylic acids
    • 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
    • C10M2207/40—Fatty vegetable or animal oils
    • C10M2207/401—Fatty vegetable or animal oils 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
    • C10M2209/10—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
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups 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
    • C10M2209/10—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
    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only 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
    • C10M2209/10—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
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C10M2209/1085—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified used as base material
    • 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
    • C10N2030/08—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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • 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
    • C10N2040/02—Bearings
    • 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
    • C10N2040/06—Instruments or other precision apparatus, e.g. damping fluids

Definitions

  • the present invention relates to a lubricant composition containing an antioxidant that inhibits the oxidative degradation of the composition.
  • the invention further relates to a method for producing the
  • Lubricant manufacturers are under constant pressure to improve their products to meet the needs of manufacturers and users.
  • the chemical and thermal stability of the lubricants and the associated resistance to oxidation processes are to be constantly improved.
  • a high level of resistance to oxidation processes is of great importance since these impair the physical and chemical properties of the lubricant and reduce its ability to protect the surfaces treated with it.
  • oxidation processes can increase the acidity of the lubricant, which accelerates the wear and corrosion of metal surfaces. Oxidation processes can also lead to the formation of oxidation products that Affect lubricity.
  • Oxidation processes can increase the viscosity of the oil and thereby undesirably influence the distribution of the lubricant on the surfaces.
  • metal-containing particles can be separated in the lubricant. These particles can act as an oxidation catalyst and accelerate the breakdown of the lubricant. This is especially true at high temperatures, such as are common in engines.
  • an oil-soluble antioxidant is often added to lubricants.
  • amines such as e.g. Bis- (4- (1, 1, 3,3-tetramethylbutyl) phenyl) amine, styrenated phenylamine, sterically hindered phenols such as e.g. Thio-diethylene-bis (2- (2, -di-tert-butyl-4-hydroxyphenyl) propionate and / or combinations of two or three of the groups mentioned are used as antioxidants.
  • GB-A-1 271 556 discloses a
  • An antioxidant additive which is a mixture of (a) the reaction product of a boron compound with a long chain hydrocarbon carboxylic acid or an anhydride thereof with a primary or secondary amine and (b) a polycyclic phenolic compound.
  • US-A-5 354 484 describes a lubricant additive that provides high temperature stability and contains a mixture of (i) an amine salt of a substituted phosphoric acid and (ii) an amine substituted hydrocarbon succinic acid compound.
  • the additives mentioned above generally show satisfactory antioxidative properties. However, the amount to be used is usually quite high, which is disadvantageous for cost reasons. In addition, at higher concentrations there is a risk that the properties of the lubricant will be changed in an undesirable manner. In addition, the aforementioned additives generally have to be synthesized in complex processes.
  • a lubricant composition is also known from DE112010000922 T5, which comprises a base lubricant consisting of a base oil and a thickener and an additive added to the base lubricant, the additive comprising at least one compound which consists of polyphenol compounds derived from plants and compounds formed by decomposing them is selected.
  • Preferred polyphenol compounds are gallic acid, ellagic acid, chlorogenic acid, caffeinic acid, curcumin and quercetin.
  • polyphenol compounds are natural products.
  • the compounds mentioned show a rather low antioxidative effect.
  • some of them are strongly colored (e.g. curcumin), which limits their possible uses. Presentation of the invention
  • the invention was based on the object of providing a lubricant composition which has an antioxidant with which the disadvantages mentioned above can be at least partially eliminated.
  • a lubricant composition which contains a base oil and hydroxytyrosol and / or an ester thereof.
  • Hydroxytyrosol belongs to the family of natural polyphenols and has the following structural formula:
  • Hydroxytyrosol is known to have antioxidant properties. However, it was surprising for the person skilled in the art that it has equivalent or, based on the concentration used, even better antioxidative properties than synthetic antioxidants usually used in practice, and that it can be added to common base oils without impairing their functional properties.
  • esters of hydroxytyrosol can also be used.
  • the hydroxytyrosol in the lubricant composition can also be only partially present as an ester.
  • Esters which are particularly suitable according to the invention are carboxylic acid esters, as discussed in more detail below. In the following, if meaningful, references to hydroxytyrosol should also include its esters. In principle, it is possible to use hydroxytyrosol in pure form.
  • the lubricant composition contains solubilized hydroxytyrosol.
  • solubilized hydroxytyrosol is to be understood as meaning hydroxytyrosol, the solubility of which in relation to the base oil used has been increased by adding a solubilizing agent.
  • the type and amount of the solubilizing agent depends, among other things, on the base oil used in each case, the desired solution properties of the hydroxytyrosol and the intended uses of the lubricant compositions.
  • compounds which form a chemical compound with the hydroxytyrosol are also to be encompassed, for example with the formation of esters, with the term solubilizing agent.
  • Suitable solubilizing agents for polyphenols are known and are described, for example, in the publications EP 2 359 702 B1, WO 2007/051329 A1,
  • solubilizing agents which are particularly suitable according to the invention are C2-io-carboxylic acids which can be branched and / or unbranched, one or more
  • Hydroxycarboxylic acids with at least 2, preferably 3 carboxylic acid groups are preferred.
  • Hydroxycarboxylic acids with at least 2, preferably 3 hydroxyl groups and / or hydroxycarboxylic acids with at least 2, preferably 3 hydroxyl groups and at least 2, preferably 3 carboxylic acid groups are also preferred.
  • Carboxylic acids which are particularly suitable according to the invention are selected from the group consisting of citric acid, apple acid, fumaric acid, gluconic acid, glycolic acid, lactic acid, oxalic acid, wine acid, almond salicylic acid and / or mixtures thereof. Citric acid is very particularly preferred.
  • the lubricant composition at least partially comprises hydroxytyrosol carboxylic acid esters, in particular esters of hydroxytyrosol and C2-io-carboxylic acids, where the C2-io-carboxylic acids can be branched and / or unbranched, one or more substituents, in particular Hydroxy groups and / or one or more carboxylic acid groups can have.
  • the lubricant composition particularly preferably comprises, at least in part, esters of hydroxytyrosol and hydroxycarboxylic acids with at least 2, preferably 3, carboxylic acid groups.
  • The also preferably comprises
  • Lubricant composition at least in part esters of hydroxytyrosol and hydroxycarboxylic acids with at least 2, preferably 3 hydroxy groups and / or esters of hydroxytyrosol and hydroxycarboxylic acids with at least 2, preferably 3 hydroxy groups and at least 2, preferably 3
  • the lubricant composition comprises, at least in part, esters of hydroxytyrosol and carboxylic acids, selected from the group consisting of citric acid, malic, fumaric, gluconic, glycolic, lactic, oxalic, tartaric, almond-salicylic acid and / or Mixtures of these.
  • the lubricant composition very particularly preferably comprises at least some of the esters
  • the lubricant composition advantageously contains hydroxytyrosol and / or its ester in an amount which inhibits oxidation.
  • the proportion of hydroxytyrosol and / or its esters is from 0.01% by weight to 2% by weight and / or from 0.1% by weight to 2% by weight and / or from 0.1% by weight to 1.5% by weight, and / or from 0.01% by weight to 0.5% by weight, and / or from 0.05% by weight to 1% by weight, more preferably from 0.1% by weight to 1% by weight, more preferably from 0.1% by weight to 0.5% by weight and in particular from 0.25% by weight to 0.35% by weight, in each case based on the total weight of the lubricant composition.
  • the amount of solubilizing agent is more preferably in the
  • Lubricant composition based on the total amount of
  • Hydroxytyrosol and solubilizing agent advantageously 0.5 to 4% by weight, more preferably 0.5 to 3.5% by weight, still more preferably 0.5 to 3% by weight, even more preferably 1 to 3% by weight , more preferably from 1.5 to 3% by weight and in particular from 1.5 to 3% by weight.
  • a base oil is to be understood as meaning the base liquids which are customarily used for the production of lubricants, in particular oils which can be assigned to groups I, II, III, IV or V according to the classification of the American Petroleum Institute (API).
  • Particularly preferred base oils are selected from the group consisting of esters, in particular synthetic esters, polyglycols, naphthenic and / or aromatic mineral oils, synthetic hydrocarbons, phenyl ethers, polyalphaolefins, native base oils and derivatives of native oils and / or mixtures thereof.
  • esters in particular synthetic esters, and / or mixtures of esters, in particular
  • the base oil is selected from the group consisting of an ester of an aromatic or aliphatic di-, tri- or tetracarboxylic acid with one or a mixture of C7 to C22 alcohols, a polyphenyl ether or alkylated
  • Diphenyl ether from an ester of trimethylolpropane, pentaerythritol or dipentaerythritol with aliphatic C7 to C22 carboxylic acids, from cis-dimeric acid esters, made from C7 to C22 alcohols, from complex esters, as individual components or in any mixture.
  • Particularly preferred base oils are esters, especially synthetic esters, and their mixtures with synthetic hydrocarbons and / or polyalphaolefins. It was found in practical tests that these base oils show a particularly good absorption capacity for hydroxytyrosol, in particular for hydroxytyrosol which has been solubilized with citric acid.
  • base oils are native oils based on triglycerides
  • a high oleic acid content in particular selected from the group consisting of sunflower oil, rapeseed oil, castor oil, linseed oil, corn oil, safflower oil, soybean oil, linseed oil, peanut oil, “Lesquerella” oil, palm oil and their derivatives.
  • base oils are triglycerides with a content (based on the bound fatty acids) of at least 50% by weight of oleic acid and less than 10% by weight of polyunsaturated fatty acids and their derivatives.
  • the base oils can be used individually or in combination (if miscible). Particularly preferred base oils have a viscosity in the range from 10 mm 2 / s to 1000 mm 2 / s, measured at 40 ° C.
  • the proportion of the base oil in the Lubricant composition according to the invention from 99.99% by weight to 90% by weight, more preferably from 99.5% by weight to 94.5% by weight and in particular from 99.75% by weight to 94.75% by weight, in each case based on the total weight of the lubricant composition.
  • the aforementioned values relate in particular to lubricant compositions which are present as lubricating oil, ie essentially without a thickener. Is that
  • Lubricant composition as a grease, i.e. with thickener before, the proportion of the base oil in the invention
  • Lubricant composition preferably from 70% to 97.00% by weight.
  • Hydroxytyrosol and / or its esters can be present as the sole antioxidant or in combination with other antioxidants. According to the invention
  • Particularly suitable further antioxidants are the following compounds: styrenated diphenylamines, diaromatic amines, phenolic resins, thiophenol resins, phosphites, butylated hydroxytoluene, butylated hydroxyanisole, phenyl-alpha-naphthylamine, phenyl-beta-naphthylamine, octylated / butylated
  • the lubricant composition can furthermore contain corrosion protection additives, metal deactivators, wear protection additives and / or ion complexing agents.
  • IRGAMET ® 39 IRGACOR ® DSS G, Amin O
  • SARKOSYL ® 0 (Ciba)
  • COBRATEC ® 122 CUVAN ® 303
  • VANLUBE ® 9123 CI-426, CI-426EP, CI-429 and CI-498.
  • wear protection additives are amines, amine phosphates, phosphates, thiophosphates, phosphorothionates and mixtures of these
  • wear protection additives include IRGALUBE ® TPPT, IRGALUBE ® 232, IRGALUBE ® 349,
  • the lubricant composition can contain solid lubricants such as PTFE, BN, pyrophosphate, Zn oxide, Mg oxide, pyrophosphate, thiosulfate, Mg carbonate, Ca carbonate, Ca stearate, Zn sulfide, Mo sulfide, W sulfide, Sn -Sulfide, graphite, graphene, nano-tubes, Si02 modifications or a mixture thereof.
  • solid lubricants such as PTFE, BN, pyrophosphate, Zn oxide, Mg oxide, pyrophosphate, thiosulfate, Mg carbonate, Ca carbonate, Ca stearate, Zn sulfide, Mo sulfide, W sulfide, Sn -Sulfide, graphite, graphene, nano-tubes, Si02 modifications or a mixture thereof.
  • the lubricant composition can moreover contain thickeners, in particular metal soaps, metal complex soaps, bentonites, fluorides, silicates, sulfonates and / or polyimides.
  • the proportion of the thickener in the lubricant composition according to the invention is preferably from 1% by weight to 20% by weight, in each case based on the total weight of the lubricant composition.
  • the invention further relates to a method for producing a lubricant composition, preferably a lubricant composition according to one or more of the embodiments according to the invention, comprising the following steps:
  • esters of hydroxytyrosol as well as solubilizing agents and / or additives are those discussed in the context of the present invention in relation to the lubricant composition according to the invention.
  • the mixing of the base oil with hydroxytyrosol and / or its esters takes place in
  • the method according to the invention can also comprise further method steps in which, for example, the further components described in relation to the lubricant composition according to the invention, such as further antioxidants, thickeners, corrosion protection additives, metal deactivators, ion complexing agents and / or solid lubricants, are introduced.
  • the further components described in relation to the lubricant composition according to the invention such as further antioxidants, thickeners, corrosion protection additives, metal deactivators, ion complexing agents and / or solid lubricants, are introduced.
  • the lubricant composition according to the invention is suitable for
  • Another object of the present invention relates to the use of the lubricant composition for lubricating the surfaces of sliding partners in a tribological system.
  • the lubricant composition is particularly preferably used as an intermediate to reduce friction and / or wear in a tribological system.
  • another preferred lubricant composition for lubricating the surfaces of sliding partners in a tribological system.
  • the lubricant composition is used simultaneously for power transmission, vibration damping and / or as corrosion protection.
  • the lubricant composition is particularly useful naturally with tribological and theological systems that are exposed to large oxidative loads.
  • a preferred embodiment of the invention therefore relates to the use of the lubricant composition for H1 high-temperature applications for life and / or consumption lubrication in components such as, in particular, chains, gears, bearings or fittings and / or marine components.
  • Figure 1 Lidded evaporation dishes in side view.
  • Figure 2 Covered evaporation trays in supervision.
  • Figure 11 Start of oxidation of selected compositions.
  • Figure 12 Limit value (Treshhold) of the oxidation process selected
  • Example 1 Preparation of various lubricant compositions
  • the hydroxytyrosol used is one containing citric acid (about 2% by weight, based on the
  • Example 2 Measurement of the evaporation behavior and the apparently dynamic viscosity of selected compositions from Example 1
  • composition 1 according to the invention and of comparative examples 1, 2, 3 and 4 are measured (capped dish tests, gas exchange takes place).
  • the evaporation behavior and the change in the apparently dynamic viscosity [mPas] as a criterion of progressive oxidation under thermal loading is determined as a comparative measurement by means of a multiple determination (min. 3-fold determination).
  • the sample amount per test is 5 g (+/- 0.1 g).
  • the evaporation behavior in% by weight is determined by back-weighing.
  • the theological determination of the apparently dynamic viscosity also makes comparative conclusions about the thermal aging (eg polymerization) or the Protection against thermal aging taken.
  • Capped aluminum evaporation trays with a diameter of 50 mm are used.
  • the 2 opposite holes in the lid have a diameter of 5 mm and are 10 mm from the edge (see Figures 1 and 2).
  • the use of a punching template makes sense here, but is not absolutely necessary.
  • the two bowls are attached to the fold of the bowls using two staples.
  • Example 3 Determination of the Start of Oxidation and the Limit (Treshhold) of the Oxidation Course of Selected Compositions from Example 1
  • the start of oxidation and the limit value (Treshhold) of the course of oxidation of selected compositions from Example 1 is determined by means of dynamic DSC (heating rate 1 ° C./min).
  • DSC heating rate 1 ° C./min.
  • the chemical dynamics within a material system become visible, from which in turn the oxidation behavior in relation to the thermal energy input is inferred.
  • the value "start of oxidation” describes a first significant change in potential for thermal energy input and thus refers to the delay that a mixture of substances experiences compared to another mixture of substances.
  • the "limit" (Treshhold) describes the progress of the
  • composition 1 according to the invention has a higher oxidation resistance than the comparative examples.
  • composition 2 according to the invention has a higher oxidation resistance than the pure base oil (comparative example 5) and compared to comparative example 6 provided with the same amount of antioxidant.
  • composition of the invention determined start of oxidation above and the limit value only slightly below the limit value of Comparative Example 7 - although this has more than ten times the amount of antioxidant.
  • composition 4 according to the invention has a higher oxidation resistance than the comparative examples.
  • composition 3 according to the invention has a higher oxidation resistance than the comparative examples.
  • flydroxytyrosol has a high antioxidant effect even at very low application concentrations.

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Abstract

The invention relates to a lubricant composition, which contains a base oil and hydroxytyrosol and/or esters thereof.

Description

Schmiermittelzusammensetzung  lubricant composition
Beschreibung description
Technisches Gebiet  Technical field
Die vorliegende Erfindung betrifft eine Schmiemnittelzusammensetzung, die ein Antioxidationsmittel enthält, das den oxidativen Abbau der Zusammensetzung hemmt. Die Erfindung betrifft ferner ein Verfahren zur Herstellung der The present invention relates to a lubricant composition containing an antioxidant that inhibits the oxidative degradation of the composition. The invention further relates to a method for producing the
Schmiermittelzusammensetzung sowie ihre Verwendung. Lubricant composition and its use.
Stand der Technik State of the art
Hersteller von Schmiermitteln stehen unter ständigem Druck, ihre Produkte entsprechend den Anforderungen von Herstellern und Anwendern zu verbessern. So sollen insbesondere chemische und thermische Stabilität der Schmiermittel und damit verbunden ihre Resistenz gegen Oxidationsprozesse ständig verbessert werden. Eine hohe Resistenz gegen Oxidationsprozesse ist dabei von großer Bedeutung, da diese die physikalischen und chemischen Eigenschaften des Schmiermittels beeinträchtigen und seine Fähigkeit, die mit ihm behandelten Oberflächen zu schützen, vermindern. So können Oxidations- prozesse beispielsweise die Azidität des Schmiermittels erhöhen, wodurch die Abnutzung und Korrosion von Metalloberflächen beschleunigt wird. Oxidations- prozesse können ferner zur Bildung von Oxidationsprodukten führen, die das Schmiervermögen beeinträchtigen. Des Weiteren können Oxidationsprozesse die Viskosität des Öls erhöhen und hierdurch die Verteilung des Schmiermittels auf den Oberflächen in unerwünschter weise beeinflussen. Lubricant manufacturers are under constant pressure to improve their products to meet the needs of manufacturers and users. In particular, the chemical and thermal stability of the lubricants and the associated resistance to oxidation processes are to be constantly improved. A high level of resistance to oxidation processes is of great importance since these impair the physical and chemical properties of the lubricant and reduce its ability to protect the surfaces treated with it. For example, oxidation processes can increase the acidity of the lubricant, which accelerates the wear and corrosion of metal surfaces. Oxidation processes can also lead to the formation of oxidation products that Affect lubricity. Furthermore, oxidation processes can increase the viscosity of the oil and thereby undesirably influence the distribution of the lubricant on the surfaces.
Bei der Schmierung von metallischen Oberflächen kommt noch hinzu, dass es zu einer Abscheidung metallhaltiger Teilchen im Schmiermittel kommen kann. Diese Teilchen können als Oxidationskatalysator fungieren und den Abbau des Schmiermittels beschleunigen. Dies gilt insbesondere bei hohen Temperaturen, wie sie beispielsweise in Motoren üblich sind. When lubricating metallic surfaces, there is also the fact that metal-containing particles can be separated in the lubricant. These particles can act as an oxidation catalyst and accelerate the breakdown of the lubricant. This is especially true at high temperatures, such as are common in engines.
Um diese unerwünschten Effekte zu verhindern, wird Schmiermitteln häufig ein öllösliches Antioxidationsmittel zugesetzt. So werden in der Praxis oft Amine wie z.B. Bis-(4-(1 ,1 ,3,3-tetramethylbutyl)phenyl)amin, styrolisiertes Phenylamin, sterisch gehindert Phenole wie z.B. Thio-diethylen-bis(2-(2,-di-tertbutyl-4- hydroxyphenyl) propionat und/oder Kombinationen von zwei oder drei der genannten Stoffgruppen als Antioxidationsmittel verwendet. To prevent these undesirable effects, an oil-soluble antioxidant is often added to lubricants. In practice, amines such as e.g. Bis- (4- (1, 1, 3,3-tetramethylbutyl) phenyl) amine, styrenated phenylamine, sterically hindered phenols such as e.g. Thio-diethylene-bis (2- (2, -di-tert-butyl-4-hydroxyphenyl) propionate and / or combinations of two or three of the groups mentioned are used as antioxidants.
Es gibt zahlreiche Patentschriften, die antioxidativ wirkende Additive There are numerous patents that have antioxidant additives
beschreiben. Beispielsweise offenbart die GB-A-1 271 556 ein describe. For example, GB-A-1 271 556 discloses a
Antioxidationsadditiv, das eine Mischung aus (a) dem Reaktionsprodukt einer Borverbindung mit einer langkettigen Kohlenwasserstoffcarbonsäure oder einem Anhydrid derselben mit einem primären oder sekundären Amin und (b) einer polycyclischen phenolischen Verbindung ist. US-A-5 354 484 beschreibt ein Schmiermitteladditiv, das Hochtemperaturstabilität liefert und eine Mischung aus (i) einem Aminsalz einer substiutierten Phosphorsäure und (ii) einer aminsubstituierten Kohlenwasserstoffbernsteinsäureverbindung enthält. An antioxidant additive which is a mixture of (a) the reaction product of a boron compound with a long chain hydrocarbon carboxylic acid or an anhydride thereof with a primary or secondary amine and (b) a polycyclic phenolic compound. US-A-5 354 484 describes a lubricant additive that provides high temperature stability and contains a mixture of (i) an amine salt of a substituted phosphoric acid and (ii) an amine substituted hydrocarbon succinic acid compound.
Zudem geben mehrere Druckschriften des Standes der Technik die In addition, several prior art documents give the
Verwendung einer Kombination aus einer Borverbindung und einem aroma- tischen Amin in Schmiermittelzusammensetzungen an. Beispiele für solche Druckschriften schließen EP-A-0 678 569, EP-A-0 673 991 , US-A-4 657 686, US-A-4 689 162, EP-A-0 620 267, EP-A-0 447 916 und JP-A-07 12 66 81 ein. Use of a combination of a boron compound and an aromatic amine in lubricant compositions. Examples of such References include EP-A-0 678 569, EP-A-0 673 991, US-A-4 657 686, US-A-4 689 162, EP-A-0 620 267, EP-A-0 447 916 and JP-A-07 12 66 81 a.
Aus der US-A-3 478 107 ist bekannt, dass verzweigte Alkylformaldehyd- mercaptale der Formel R '- S-CH 2 -SR ", worin R' und R" unabhängig verzweigte C3-C4-Alkylreste sind, als Verschleißschutzadditive in Schmierölen verwendbar sind. It is known from US Pat. No. 3,478,107 that branched alkylformaldehyde mercaptals of the formula R '- S-CH 2 -SR ", in which R' and R" are independently branched C3-C4-alkyl radicals, can be used as wear protection additives in lubricating oils are.
Die vorgenannten Additive zeigen in der Regel zufriedenstellende antioxidative Eigenschaften. Jedoch ist die einzusetzende Menge meist recht hoch, was aus Kostengründen von Nachteil ist. Zudem besteht bei höheren Konzentrationen die Gefahr, dass die Eigenschaften des Schmiermittels in unerwünschter weise verändert werden. Darüber hinaus müssen die vorgenannten Additive in der Regel in aufwändigen Verfahren synthetisiert werden. The additives mentioned above generally show satisfactory antioxidative properties. However, the amount to be used is usually quite high, which is disadvantageous for cost reasons. In addition, at higher concentrations there is a risk that the properties of the lubricant will be changed in an undesirable manner. In addition, the aforementioned additives generally have to be synthesized in complex processes.
Aus der DE112010000922 T5 ist ferner eine Schmiermittelzusammensetzung bekannt, die ein aus einem Basisöl und einem Verdicker bestehendes Basis- schmiermittel und ein dem Basisschmiermittel zugesetztes Additiv umfasst, wobei das Additiv mindestens eine Verbindung umfasst, die aus von Pflanzen abgeleiteten Polyphenolverbindungen und durch Zersetzung derselben gebildeten Verbindungen ausgewählt ist. Bevorzugte Polyphenolverbindungen sind Gallussäure, Ellagsäure, Chlorogensäure, Kaffeinsäure, Curcumin und Quercetin. Im Unterschied zu den oben beschriebenen synthetischen Antioxi- dantien sind Polyphenolverbindungen Naturstoffe. Jedoch zeigen die genann- ten Verbindungen eine eher geringe antioxidative Wirkung. Dazu kommt, dass sie teilweise stark farbig sind (z.B. Curcumin), was ihre Einsatzmöglichkeiten beschränkt. Darstellung der Erfindung A lubricant composition is also known from DE112010000922 T5, which comprises a base lubricant consisting of a base oil and a thickener and an additive added to the base lubricant, the additive comprising at least one compound which consists of polyphenol compounds derived from plants and compounds formed by decomposing them is selected. Preferred polyphenol compounds are gallic acid, ellagic acid, chlorogenic acid, caffeinic acid, curcumin and quercetin. In contrast to the synthetic antioxidants described above, polyphenol compounds are natural products. However, the compounds mentioned show a rather low antioxidative effect. In addition, some of them are strongly colored (e.g. curcumin), which limits their possible uses. Presentation of the invention
Der Erfindung lag die Aufgabe zu Grunde, eine Schmiermittelzusannnnen- setzung bereitzustellen, die ein Antioxidans aufweist, mit dem die oben genannten Nachteile zumindest teilweise ausgeräumt werden können. The invention was based on the object of providing a lubricant composition which has an antioxidant with which the disadvantages mentioned above can be at least partially eliminated.
Diese Aufgabe wird gelöst durch eine Schmiermittelzusammensetzung, die ein Basisöl sowie Hydroxytyrosol und/oder Ester hiervon enthält. This object is achieved by a lubricant composition which contains a base oil and hydroxytyrosol and / or an ester thereof.
Hydroxytyrosol gehört zur Familie der natürlichen Polyphenole und weist die folgende Strukturformel auf: Hydroxytyrosol belongs to the family of natural polyphenols and has the following structural formula:
Es ist bekannt, dass Hydroxytyrosol antioxidative Eigenschaften aufweist. Für den Fachmann war jedoch überraschend, dass es gleichwertige oder bezogen auf die Einsatzkonzentration sogar bessere antioxidative Eigenschaften als in der Praxis üblicherweise verwendete synthetische Antioxidantien aufweist, sowie dass seine Zugabe zu gängigen Basisölen möglich ist, ohne deren funk- tionelle Eigenschaften zu verschlechtern. Hydroxytyrosol is known to have antioxidant properties. However, it was surprising for the person skilled in the art that it has equivalent or, based on the concentration used, even better antioxidative properties than synthetic antioxidants usually used in practice, and that it can be added to common base oils without impairing their functional properties.
Erfindungsgemäß können auch Ester des Hydroxytyrosols eingesetzt werden. Besonders bevorzugt sind Ester, die eine Löslichkeit in dem jeweiligen Basisöl bei 25°C von mindestens 0,1 g/l, beispielsweise von 0,1 bis 5 g/l haben. Dabei kann das Hydroxytyrosol in der Schmiermittelzusammensetzung auch nur zum Teil als Ester vorliegen. Erfindungsgemäß besonders geeignete Ester sind Carbonsäureester, wie weiter unten näher diskutiert. Im Folgenden sollen, wenn sinnvoll, bei Bezugnahmen auf Hydroxytyrosol, auch dessen Ester umfasst sein. Es ist grundsätzlich möglich, Hydroxytyrosol in reiner Form einzusetzen. Um die Löslichkeit von Hydroxytyrosol zu erhöhen, ist es in einer Ausführungsform der Erfindung bevorzugt, dass die Schmiermittelzusammensetzung solubilisiertes Hydroxytyrosol enthält. Dabei ist unter dem Begriff„solubilisiertes Hydroxytyro- sol“ Hydroxytyrosol zu verstehen, dessen Löslichkeit im Bezug auf das jeweils verwendete Basisöl durch Hinzufügen eines Solubilisierungsmittels erhöht worden ist. Art und Menge des Solubilisierungsmittels ist unter anderem abhängig von dem jeweils verwendeten Basisöl, den erwünschten Lösungs- eigenschaften des Hydroxytyrosols sowie den avisierten Verwendungen der Schmiermittelzusammensetzungen. Insbesondere sollen auch Verbindungen, die mit dem Hydroxytyrosol eine chemische Verbindung eingehen, beispiels- weise unter Ausbildung von Estern mit dem Begriff Solubilisierungsmittel umfasst werden. According to the invention, esters of hydroxytyrosol can also be used. Esters which have a solubility in the respective base oil at 25 ° C. of at least 0.1 g / l, for example from 0.1 to 5 g / l, are particularly preferred. The hydroxytyrosol in the lubricant composition can also be only partially present as an ester. Esters which are particularly suitable according to the invention are carboxylic acid esters, as discussed in more detail below. In the following, if meaningful, references to hydroxytyrosol should also include its esters. In principle, it is possible to use hydroxytyrosol in pure form. To increase the solubility of hydroxytyrosol, it is preferred in one embodiment of the invention that the lubricant composition contains solubilized hydroxytyrosol. The term “solubilized hydroxytyrosol” is to be understood as meaning hydroxytyrosol, the solubility of which in relation to the base oil used has been increased by adding a solubilizing agent. The type and amount of the solubilizing agent depends, among other things, on the base oil used in each case, the desired solution properties of the hydroxytyrosol and the intended uses of the lubricant compositions. In particular, compounds which form a chemical compound with the hydroxytyrosol are also to be encompassed, for example with the formation of esters, with the term solubilizing agent.
Geeignete Solubilisierungsmittel für Polyphenole sind bekannt und beispiels- weise in den Druckschriften EP 2 359 702 B1 , WO 2007/051329 A1 , Suitable solubilizing agents for polyphenols are known and are described, for example, in the publications EP 2 359 702 B1, WO 2007/051329 A1,
US 2014/0377435 A1 beschrieben, deren Offenbarung durch Bezugnahme inkorporiert wird. In praktischen Versuchen wurde gefunden, dass erfindungs- gemäß besonders geeignete Solubilisierungsmittel C2-io-Carbonsäuren sind, die verzweigt und/oder unverzweigt vorliegen können, ein oder mehrere  US 2014/0377435 A1, the disclosure of which is incorporated by reference. In practical tests, it was found that solubilizing agents which are particularly suitable according to the invention are C2-io-carboxylic acids which can be branched and / or unbranched, one or more
Substitutenten, insbesondere Hydroxygruppen und/oder ein oder mehrere Carbonsäuregruppen aufweisen können. Bevorzugt sind Hydroxycarbonsäuren mit mindestens 2, vorzugsweise 3 Carbonsäuregruppen. Ebenfalls bevorzugt sind Hydroxycarbonsäuren mit mindestens 2, vorzugsweise 3 Hydroxygruppen und/oder Hydroxycarbonsäuren mit mindestens 2, vorzugsweise 3 Hydroxy- gruppen und mindestens 2, vorzugsweise 3 Carbonsäuregruppen. Erfindungs- gemäß besonders geeignete Carbonsäuren sind ausgewählt aus der Gruppe bestehend aus Zitronensäure, Apfel-, Fumar-, Glucon-, Glycol-, Milch-, Oxal-, Wein-, Mandel- Salicylsäure und/oder Gemischen hiervon. Ganz besonders bevorzugt ist dabei Zitronensäure. Ohne sich erfindungsgemäß auf einen Mechanismus festzulegen, wird vermutet, dass das Hydroxytyrosol mit den Carbonsäuren Ester bildet, wodurch die Löslichkeit des Hydroxytyrosols erhöht wird. Mithin umfasst die Schmiermittelzusammensetzung in einer bevorzugten Ausführungsform der Erfindung zumindest anteilig Hydroxytyrosol-Carbon- säureester, insbesondere Ester aus Hydroxytyrosol und C2-io-Carbonsäuren, wobei die C2-io-Carbonsäuren verzweigt und/oder unverzweigt vorliegen können, einen oder mehrere Substitutenten, insbesondere Hydroxygruppen und/oder eine oder mehrere Carbonsäuregruppen aufweisen können. Can have substituents, in particular hydroxyl groups and / or one or more carboxylic acid groups. Hydroxycarboxylic acids with at least 2, preferably 3 carboxylic acid groups are preferred. Hydroxycarboxylic acids with at least 2, preferably 3 hydroxyl groups and / or hydroxycarboxylic acids with at least 2, preferably 3 hydroxyl groups and at least 2, preferably 3 carboxylic acid groups are also preferred. Carboxylic acids which are particularly suitable according to the invention are selected from the group consisting of citric acid, apple acid, fumaric acid, gluconic acid, glycolic acid, lactic acid, oxalic acid, wine acid, almond salicylic acid and / or mixtures thereof. Citric acid is very particularly preferred. Without specifying a mechanism according to the invention, it is assumed that the hydroxytyrosol forms esters with the carboxylic acids, which increases the solubility of the hydroxytyrosol. Thus, in a preferred embodiment of the invention, the lubricant composition at least partially comprises hydroxytyrosol carboxylic acid esters, in particular esters of hydroxytyrosol and C2-io-carboxylic acids, where the C2-io-carboxylic acids can be branched and / or unbranched, one or more substituents, in particular Hydroxy groups and / or one or more carboxylic acid groups can have.
Besonders bevorzugt umfasst die Schmiermittelzusammensetzung zumindest anteilig Ester aus Hydroxytyrosol und Hydroxycarbonsäuren mit mindestens 2, vorzugsweise 3 Carbonsäuregruppen. Ebenfalls bevorzugt umfasst die  The lubricant composition particularly preferably comprises, at least in part, esters of hydroxytyrosol and hydroxycarboxylic acids with at least 2, preferably 3, carboxylic acid groups. The also preferably comprises
Schmiermittelzusammensetzung zumindest anteilig Ester aus Hydroxytyrosol und Hydroxycarbonsäuren mit mindestens 2, vorzugsweise 3 Hydroxygruppen und/oder Ester aus Hydroxytyrosol und Hydroxycarbonsäuren mit mindestens 2, vorzugsweise 3 Hydroxygruppen und mindestens 2, vorzugsweise 3 Lubricant composition at least in part esters of hydroxytyrosol and hydroxycarboxylic acids with at least 2, preferably 3 hydroxy groups and / or esters of hydroxytyrosol and hydroxycarboxylic acids with at least 2, preferably 3 hydroxy groups and at least 2, preferably 3
Carbonsäuregruppen. Erfindungsgemäß ebenfalls besonders bevorzugt umfasst die Schmiermittelzusammensetzung zumindest anteilig Ester aus Hydroxytyrosol und Carbonsäuren, ausgewählt aus der Gruppe bestehend aus Zitronensäure, Apfel-, Fumar-, Glucon-, Glycol-, Milch-, Oxal-, Wein-, Mandel- Salicylsäure und/oder Gemischen hiervon. Ganz besonders bevorzugt umfasst die Schmiermittelzusammensetzung zumindest anteilig Ester aus Carboxylic acid groups. Also particularly preferred according to the invention, the lubricant composition comprises, at least in part, esters of hydroxytyrosol and carboxylic acids, selected from the group consisting of citric acid, malic, fumaric, gluconic, glycolic, lactic, oxalic, tartaric, almond-salicylic acid and / or Mixtures of these. The lubricant composition very particularly preferably comprises at least some of the esters
Hydroxytyrosol und Zitronensäure. Zweckmäßigerweise enthält die Schmiermittelzusamnnensetzung Hydroxyty- rosol und/oder dessen Ester in einer oxidationshemmenden Menge. In einer bevorzugten Ausführungsform der Erfindung beträgt der Anteil an Hydroxyty- rosol und/oder an dessen Estern von 0,01 Gew.% bis 2 Gew.% und/oder von von 0,1 Gew.% bis 2 Gew.% und/oder von von 0, 1 Gew.% bis 1 ,5 Gew.%, und/oder von 0,01 Gew.% bis 0,5 Gew.%, und/oder von 0, 05 Gew.% bis 1 Gew.%, noch bevorzugter von 0,1 Gew.% bis 1 Gew.%, noch bevorzugter von 0,1 Gew.% bis 0,5 Gew.% und insbesondere von 0,25 Gew.% bis 0,35 Gew.%, jeweils bezogen auf das Gesamtgewicht der Schmiermittelzusammensetzung. Hydroxytyrosol and citric acid. The lubricant composition advantageously contains hydroxytyrosol and / or its ester in an amount which inhibits oxidation. In a preferred embodiment of the invention, the proportion of hydroxytyrosol and / or its esters is from 0.01% by weight to 2% by weight and / or from 0.1% by weight to 2% by weight and / or from 0.1% by weight to 1.5% by weight, and / or from 0.01% by weight to 0.5% by weight, and / or from 0.05% by weight to 1% by weight, more preferably from 0.1% by weight to 1% by weight, more preferably from 0.1% by weight to 0.5% by weight and in particular from 0.25% by weight to 0.35% by weight, in each case based on the total weight of the lubricant composition.
Weiter bevorzugt beträgt die Menge an Solubilisierungsmittel in der The amount of solubilizing agent is more preferably in the
Schmiermittelzusammensetzung, bezogen auf die Gesamtmenge von Lubricant composition, based on the total amount of
Hydroxytyrosol und Solubilisierungsmittel, vorteilhafter Weise 0,5 bis 4 Gew.%, noch bevorzugter von 0,5 bis 3,5 Gew.%, noch bevorzugter von 0,5 bis 3 Gew.%, noch bevorzugter von 1 bis 3 Gew.%, noch bevorzugter von 1 ,5 bis 3 Gew.% und insbesondere von 1 ,5 bis 3 Gew.%. Hydroxytyrosol and solubilizing agent, advantageously 0.5 to 4% by weight, more preferably 0.5 to 3.5% by weight, still more preferably 0.5 to 3% by weight, even more preferably 1 to 3% by weight , more preferably from 1.5 to 3% by weight and in particular from 1.5 to 3% by weight.
Unter einem Basisöl sind die üblichen für die Herstellung von Schmierstoffen verwendeten Basisflüssigkeiten, insbesondere Öle, die den Gruppen I, II, III, IV oder V nach der Klassifizierung des American Petroleum Institute (API) zugeordnet werden können, zu verstehen. Besonders bevorzugte Basisöle sind ausgewählt aus der Gruppe bestehend aus Estern, insbesondere synthetischen Estern, Polyglykolen, naphtenischen und/oder aromatischen Mineralölen, synthetischen Kohlenwasserstoffen, Phenylethern, Polyalphaolefinen, nativen Basisölen und Derivaten von nativen Ölen und/oder Gemischen hiervon. A base oil is to be understood as meaning the base liquids which are customarily used for the production of lubricants, in particular oils which can be assigned to groups I, II, III, IV or V according to the classification of the American Petroleum Institute (API). Particularly preferred base oils are selected from the group consisting of esters, in particular synthetic esters, polyglycols, naphthenic and / or aromatic mineral oils, synthetic hydrocarbons, phenyl ethers, polyalphaolefins, native base oils and derivatives of native oils and / or mixtures thereof.
Erfindungsgemäß besonders bevorzugt sind dabei Ester, insbesondere synthetische Ester, und/oder Gemische von Estern, insbesondere According to the invention, particular preference is given to esters, in particular synthetic esters, and / or mixtures of esters, in particular
synthetischen Estern, nativen Basisölen und Polyglycolen mit synthetischen Kohlenwasserstoffen und/oder Polyalphaolefinen. In einer bevorzugten Ausführungsform der Erfindung ist das Basisöl ausgewählt aus der Gruppe bestehend aus einem Ester einer aromatischen oder alipha tischen Di-, Tri- oder Tetracarbonsäure mit einem oder in Mischung vorliegen- den C7- bis C22-Alkoholen, aus einem Polyphenylether oder alkyliertem synthetic esters, native base oils and polyglycols with synthetic hydrocarbons and / or polyalphaolefins. In a preferred embodiment of the invention, the base oil is selected from the group consisting of an ester of an aromatic or aliphatic di-, tri- or tetracarboxylic acid with one or a mixture of C7 to C22 alcohols, a polyphenyl ether or alkylated
Diphenylether, aus einem Ester von Trimethylolpropan, Pentaerythrit oder Dipentaerythrit mit aliphatischen C7- bis C22- Carbonsäuren, aus Cis-Dimer- säureestern, hergestellt aus C7- bis C22-Alkoholen, aus Komplexestem, als Einzelkomponenten oder in beliebiger Mischung. Diphenyl ether, from an ester of trimethylolpropane, pentaerythritol or dipentaerythritol with aliphatic C7 to C22 carboxylic acids, from cis-dimeric acid esters, made from C7 to C22 alcohols, from complex esters, as individual components or in any mixture.
Besonders bevorzugte Basisöle sind Ester, insbesondere synthetische Ester, sowie deren Gemische mit synthetischen Kohlenwasserstoffen und/oder Polyalphaolefinen. So wurde in praktischen Versuchen gefunden, dass diese Basisöle ein besonders gutes Aufnahmevermögen für Hydroxytyrosol, insbesondere für Hydroxytyrosol, das mit Zitronensäure solubilisiert wurde, zeigen. Particularly preferred base oils are esters, especially synthetic esters, and their mixtures with synthetic hydrocarbons and / or polyalphaolefins. It was found in practical tests that these base oils show a particularly good absorption capacity for hydroxytyrosol, in particular for hydroxytyrosol which has been solubilized with citric acid.
Ebenfalls bevorzugte Basisöle sind native Öle auf Triglyceridbasis, Also preferred base oils are native oils based on triglycerides,
vorzugsweise mit einem hohen Ölsäureanteil, insbesondere ausgewählt aus der Gruppe bestehend aus Sonnenblumenöl, Rapsöl, Rizinusöl, Leinöl, Maisöl, Safloröl, Sojabohnenöl, Leinsamenöl, Erdnußöl,„Lesquerella”-Öl, Palmöl und deren Derivaten. preferably with a high oleic acid content, in particular selected from the group consisting of sunflower oil, rapeseed oil, castor oil, linseed oil, corn oil, safflower oil, soybean oil, linseed oil, peanut oil, “Lesquerella” oil, palm oil and their derivatives.
Ebenfalls bevorzugte Basisöle sind Triglyceride mit einem Gehalt (bezogen auf die gebundenen Fettsäuren) von mindestens 50 Gew.% Ölsäure und weniger als 10 Gew.% mehrfach ungesättigter Fettsäuren und deren Derivate.  Also preferred base oils are triglycerides with a content (based on the bound fatty acids) of at least 50% by weight of oleic acid and less than 10% by weight of polyunsaturated fatty acids and their derivatives.
Die Basisöle können einzeln oder in Kombination (falls mischbar) verwendet werden. Besonders bevorzugte Basisöle weisen eine Viskosität im Bereich von 10 mm2/s bis 1000 mm2/s auf, gemessen bei 40 °C. The base oils can be used individually or in combination (if miscible). Particularly preferred base oils have a viscosity in the range from 10 mm 2 / s to 1000 mm 2 / s, measured at 40 ° C.
In einer Ausführungsform der Erfindung beträgt der Anteil des Basisöls in der erfindungsgemäßen Schmiermittelzusammensetzung von 99,99 Gew.% bis 90 Gew.%, noch bevorzugter von 99,5 Gew.% bis 94,5 Gew.% und insbesondere von 99,75 Gew.% bis 94,75 Gew.%, jeweils bezogen auf das Gesamtgewicht der Schmiermittelzusammensetzung. Dabei beziehen sich die vorgenannten Werte insbesondere auf Schmiermittelzusammensetzungen, die als Schmieröl, d.h. im Wesentlichen ohne Verdicker vorliegen. Liegt die In one embodiment of the invention, the proportion of the base oil in the Lubricant composition according to the invention from 99.99% by weight to 90% by weight, more preferably from 99.5% by weight to 94.5% by weight and in particular from 99.75% by weight to 94.75% by weight, in each case based on the total weight of the lubricant composition. The aforementioned values relate in particular to lubricant compositions which are present as lubricating oil, ie essentially without a thickener. Is that
Schmiermittelzusammensetzung dagegen als Schmierfett, d.h. mit Verdicker vor, beträgt der Anteil des Basisöls in der erfindungsgemäßen Lubricant composition, however, as a grease, i.e. with thickener before, the proportion of the base oil in the invention
Schmiermittelzusammensetzung vorzugsweise von 70 Gew % bis 97,00 Gew %. Lubricant composition preferably from 70% to 97.00% by weight.
Hydroxytyrosol und/oder dessen Ester können als alleiniges Antioxidans oder in Kombination mit weiteren Antioxidantien vorliegen. Erfindungsgemäß  Hydroxytyrosol and / or its esters can be present as the sole antioxidant or in combination with other antioxidants. According to the invention
besonders geeignete weitere Antioxidantien sind die folgenden Verbindungen: styrolisierte Diphenylamine, diaromatische Amine, Phenolharze, Thiophenol- harze, Phosphite, butyliertes Hydroxytoluol, butyliertes Hydroxyanisol, Phenyl- alpha-naphthylamin, Phenyl-beta-naphthylamin, octyliertes/butyliertes Particularly suitable further antioxidants are the following compounds: styrenated diphenylamines, diaromatic amines, phenolic resins, thiophenol resins, phosphites, butylated hydroxytoluene, butylated hydroxyanisole, phenyl-alpha-naphthylamine, phenyl-beta-naphthylamine, octylated / butylated
Diphenylamin, di-alpha-Tocopherol, di-tert-butyl-Phenyl, Benzolpropansaure, schwefelhaltige Phenolverbindungen und Mischungen dieser Komponenten. Weiterhin kann die Schmiermittelzusammensetzung Korrosionsschutzadditive, Metalldesaktivatoren, Verschleißschutzadditive und/oder lonen-Komplexbildner enthalten. Hierzu zählen Triazole, Imidazoline, N-Methylglycin (Sarcosin), Benzotriazolderivate, N,N-Bis(2-ethylhexyl)-ar-methyl-1 H-benzotriazol-1 - methanamin; n-Methyl-N(1 -oxo-9-octadecenyl)glycin, Gemische aus Phosphor- säure und Mono-und Diisooctylester, umgesetzt mit (Cn-14)-Alkylaminen, Gemische aus Phosphorsäure und Mono-und Diisooctylester, umgesetzt mit tert-Alkylamin und primären (Ci2-14)-Aminen, Dodekansäure, Triphenylphos- phorthionat und Aminphosphate. Kommerziell erhältliche Additive sind die folgenden: IRGAMET® 39, IRGACOR® DSS G, Amin O; SARKOSYL®0 (Ciba), COBRATEC® 122, CUVAN® 303, VANLUBE®9123, CI-426, CI-426EP, CI-429 und CI-498. Diphenylamine, di-alpha-tocopherol, di-tert-butyl-phenyl, benzene propanoic acid, sulfur-containing phenol compounds and mixtures of these components. The lubricant composition can furthermore contain corrosion protection additives, metal deactivators, wear protection additives and / or ion complexing agents. These include triazoles, imidazolines, N-methylglycine (sarcosine), benzotriazole derivatives, N, N-bis (2-ethylhexyl) ar-methyl-1 H-benzotriazole-1-methanamine; n-methyl-N (1-oxo-9-octadecenyl) glycine, mixtures of phosphoric acid and mono- and diisooctyl esters, reacted with (Cn-14) alkylamines, mixtures of phosphoric acid and mono- and diisooctyl esters, reacted with tert- Alkylamine and primary (Ci2-14) amines, dodecanoic acid, triphenylphosphorionate and amine phosphates. Commercially available additives are the following: IRGAMET ® 39, IRGACOR ® DSS G, Amin O; SARKOSYL ® 0 (Ciba), COBRATEC ® 122, CUVAN ® 303, VANLUBE ® 9123, CI-426, CI-426EP, CI-429 and CI-498.
Weitere denkbare Verschleißschutzadditive sind Amine, Aminphosphate, Phosphate, Thiophosphate, Phosphorthionate und Mischungen dieser Other conceivable wear protection additives are amines, amine phosphates, phosphates, thiophosphates, phosphorothionates and mixtures of these
Komponenten. Zu den kommerziell erhältlichen Verschleißschutzadditiven gehören IRGALUBE®TPPT, IRGALUBE® 232, IRGALUBE® 349, Components. Commercially available wear protection additives include IRGALUBE ® TPPT, IRGALUBE ® 232, IRGALUBE ® 349,
IRGALUBE®21 1 und ADDITIN® RC3760 Liq 3960, FIRC-SHUN® FG 1505 und FG 1506, NA-LUBE® KR-015FG, LUBEBOND®, FLUORO®FG, SYNALOX® 40- D, ACHESON® FGA 1820 und ACHESON®FGA 1810. IRGALUBE ® 21 1 and ADDITIN ® RC3760 Liq 3960, FIRC-SHUN ® FG 1505 and FG 1506, NA-LUBE ® KR-015FG, LUBEBOND ® , FLUORO ® FG, SYNALOX ® 40-D, ACHESON ® FGA 1820 and ACHESON ® FGA 1810th
Des Weiteren kann die Schmiermittelzusammensetzung Festschmierstoffe wie PTFE, BN, Pyrophosphat, Zn-Oxid, Mg-Oxid, Pyrophosphate, Thiosulfate, Mg- Carbonat, Ca-Carbonat, Ca-Stearat, Zn-Sulfid, Mo-Sulfid, W-Sulfid, Sn-Sulfid, Graphite, Graphen, Nano-Tubes, Si02-Modifikationen oder eine Mischung daraus enthalten. Furthermore, the lubricant composition can contain solid lubricants such as PTFE, BN, pyrophosphate, Zn oxide, Mg oxide, pyrophosphate, thiosulfate, Mg carbonate, Ca carbonate, Ca stearate, Zn sulfide, Mo sulfide, W sulfide, Sn -Sulfide, graphite, graphene, nano-tubes, Si02 modifications or a mixture thereof.
Die Schmiermittelzusammensetzung kann darüber hinaus Verdicker, insbeson- dere Metallseifen, Metallkomplexseifen, Bentonite, Flarnstoffe, Silikate, Sulfo- nate und/oder Polyimide enthalten. Dabei beträgt der Anteil des Verdickers in der erfindungsgemäßen Schmiermittelzusammensetzung vorzugsweise von 1 Gew.% bis 20 Gew.%, jeweils bezogen auf das Gesamtgewicht der Schmier- mittelzusammensetzung. The lubricant composition can moreover contain thickeners, in particular metal soaps, metal complex soaps, bentonites, fluorides, silicates, sulfonates and / or polyimides. The proportion of the thickener in the lubricant composition according to the invention is preferably from 1% by weight to 20% by weight, in each case based on the total weight of the lubricant composition.
Die Erfindung betrifft ferner ein Verfahren zur Herstellung einer Schmiermittel- Zusammensetzung, vorzugsweise einer Schmiermittelzusammensetzung gemäß einer oder mehrerer der erfindungsgemäßen Ausführungsformen, umfassend folgende Schritte: The invention further relates to a method for producing a lubricant composition, preferably a lubricant composition according to one or more of the embodiments according to the invention, comprising the following steps:
Bereitstellung eines Basisöls - Vermischen des Basisöls mit Hydroxytyrosol und/oder dessen Estern, wodurch die Schmiermittelzusammensetzung erhalten wird. Provision of a base oil - Mixing the base oil with hydroxytyrosol and / or its esters, whereby the lubricant composition is obtained.
Besonders geeignete Ausführungsformen für Basisöle, Ester des Hydroxytyro- sols, sowie Solubilisierungsmittel und/oder Additive sind die im Rahmen der vorliegenden Erfindung im Bezug auf die erfindungsgemäße Schmiermittel- Zusammensetzung diskutierten. Particularly suitable embodiments for base oils, esters of hydroxytyrosol as well as solubilizing agents and / or additives are those discussed in the context of the present invention in relation to the lubricant composition according to the invention.
In einer besonders bevorzugten Ausführungsform der Erfindung findet das Vermischen des Basisöls mit Hydroxytyrosol und/oder dessen Estern in In a particularly preferred embodiment of the invention, the mixing of the base oil with hydroxytyrosol and / or its esters takes place in
Gegenwart eines Solubilisierungsmittels, insbesondere in Gegenwart eines Solubilisierungsmittels, wie im Rahmen der vorliegenden Erfindung im Bezug auf die erfindungsgemäße Schmiermittelzusammensetzung diskutiert, statt. Presence of a solubilizing agent, in particular in the presence of a solubilizing agent, as discussed in the context of the present invention in relation to the lubricant composition according to the invention.
Das erfindungsgemäße Verfahren kann noch weitere Verfahrensschritte umfassen, in denen beispielsweise die im Bezug auf die erfindungsgemäße Schmiermittelzusammensetzung beschriebenen weiteren Komponenten, wie weitere Antioxidantien, Verdicker, Korrosionsschutzadditive, Metalldesaktiva- toren, lonen-Komplexbildner und/oder Festschmierstoffe, eingebracht werden. The method according to the invention can also comprise further method steps in which, for example, the further components described in relation to the lubricant composition according to the invention, such as further antioxidants, thickeners, corrosion protection additives, metal deactivators, ion complexing agents and / or solid lubricants, are introduced.
Die erfindungsgemäße Schmiermittelzusammensetzung eignet sich zur The lubricant composition according to the invention is suitable for
Schmierung der verschiedensten Oberflächen. Insofern betrifft ein weiterer Gegenstand der vorliegenden Erfindung die Verwendung der Schmiermittel- Zusammensetzung zur Schmierung der Oberflächen von Gleitpartnern in einem tribologischen System. Besonders bevorzugt wird die Schmiermittelzusammen- setzung als Zwischenstoff zur Verringerung von Reibung und/oder Verschleiß in einem tribologischen System eingesetzt. In einer weiteren bevorzugten Lubrication of various surfaces. In this respect, another object of the present invention relates to the use of the lubricant composition for lubricating the surfaces of sliding partners in a tribological system. The lubricant composition is particularly preferably used as an intermediate to reduce friction and / or wear in a tribological system. In another preferred
Ausführungsform wird die Schmiermittelzusammensetzung gleichzeitig zur Kraftübertragung, Schwingungsdämpfung und/oder als Korrosionsschutz eingesetzt. Besonders großen Nutzen hat die Schmiermittelzusammensetzung naturgemäß bei tribologischen und Theologischen Systemen, die großen oxida- tiven Belastungen ausgesetzt sind. Eine bevorzugte Ausführungsform der Erfindung betrifft mithin die Verwendung der Schmiermittelzusammensetzung für H1 -Hochtemperaturanwendungen für Lebensdauer- und/oder Verbrauchs- Schmierung in Bauteilen wie insbesondere Ketten, Getrieben, Lagern oder Armaturen und/oder Marinebauteilen. In one embodiment, the lubricant composition is used simultaneously for power transmission, vibration damping and / or as corrosion protection. The lubricant composition is particularly useful naturally with tribological and theological systems that are exposed to large oxidative loads. A preferred embodiment of the invention therefore relates to the use of the lubricant composition for H1 high-temperature applications for life and / or consumption lubrication in components such as, in particular, chains, gears, bearings or fittings and / or marine components.
Im Folgenden wird die Erfindung anhand verschiedener Beispiele näher erläutert. The invention is explained in more detail below with the aid of various examples.
Kurzbeschreibung der Zeichnung Brief description of the drawing
Figur 1 : Gedeckelte Verdampfungsschalen in der Seitenansicht. Figure 1: Lidded evaporation dishes in side view.
Figur 2: Gedeckelte Verdampfungsschalen in der Aufsicht. Figure 2: Covered evaporation trays in supervision.
Figur 3: Abdampfverhalten verschiedener Figure 3: Evaporation behavior of various
Schmiermittelzusammensetzungen.  Lubricant compositions.
Figur 4: Scheinbar dynamische Viskosität verschiedener Figure 4: Apparently dynamic viscosity of various
Schmiermittelzusammensetzungen.  Lubricant compositions.
Figur 5: Scheinbar dynamische Viskosität verschiedener Figure 5: Apparently dynamic viscosity of various
Schmiermittelzusammensetzungen.  Lubricant compositions.
Figur 6: Illustration der Messung von Oxidationsbeginn und Grenzwert Figure 6: Illustration of the measurement of the start of oxidation and limit value
(Treshhold).  (Treshhold).
Figur 7: Oxidationsbeginn ausgewählter Zusammensetzungen. Figure 7: Oxidation of selected compositions.
Figur 8: Grenzwert (Treshhold) des Oxidationsverlaufs ausgewählter Figure 8: Limit value (Treshhold) of the oxidation process selected
Zusammensetzungen.  Compositions.
Figur 9: Oxidationsbeginn ausgewählter Zusammensetzungen. Figure 9: Oxidation of selected compositions.
Figur 10: Grenzwert (Treshhold) des Oxidationsverlaufs ausgewählter Figure 10: Limit value (Treshhold) of the oxidation process selected
Zusammensetzungen.  Compositions.
Figur 11 : Oxidationsbeginn ausgewählter Zusammensetzungen. Figur 12: Grenzwert (Treshhold) des Oxidationsverlaufs ausgewählterFigure 11: Start of oxidation of selected compositions. Figure 12: Limit value (Treshhold) of the oxidation process selected
Zusammensetzungen. Compositions.
Figur 13: Oxidationsbeginn ausgewählter Zusammensetzungen. Figure 13: Oxidation of selected compositions.
Figur 14: Grenzwert (Treshhold) des Oxidationsverlaufs ausgewählter Figure 14: Limit value (Treshhold) of the oxidation process selected
Zusammensetzungen.  Compositions.
Figur 15: Oxidationsbeginn ausgewählter Zusammensetzungen. Figure 15: Oxidation of selected compositions.
Figur 16: Grenzwert (Treshhold) des Oxidationsverlaufs ausgewählter Figure 16: Limit value (Treshhold) of the oxidation process selected
Zusammensetzungen.  Compositions.
Beispiel 1 : Herstellung verschiedener Schmiermittelzusammen- Setzungen Example 1: Preparation of various lubricant compositions
Es werden verschiedene mit Antioxidationsmitteln versehene Schmiermittel- Zusammensetzungen hergestellt: Bei dem eingesetzten Hydroxytyrosol handelt es sich um ein mit Zitronensäure (etwa 2 Gew.%, bezogen auf die Various lubricant compositions provided with antioxidants are produced: The hydroxytyrosol used is one containing citric acid (about 2% by weight, based on the
Gesamtmenge von Hydroxytyrosol und Zitronensäure) solubilisiertes  Total amount of hydroxytyrosol and citric acid) solubilized
Hydroxytyrosol.  Hydroxytyrosol.
Tab. 1  Tab. 1
Beispiel 2: Messung des Abdampfverhaltens und der scheinbar dynamischen Viskosität ausgewählter Zusammensetzungen aus Beispiel 1 Example 2: Measurement of the evaporation behavior and the apparently dynamic viscosity of selected compositions from Example 1
2.1 Das Abdampfverhalten und die scheinbar dynamische Viskosität der erfindungsgemäßen Zusammensetzung 1 und der Vergleichsbeispiele 1 , 2, 3 und 4 werden gemessen (Gedeckelte Schälchentests, Gasaustausch findet statt). Hierzu wird über eine Mehrfachbestimmung (min. 3-fach-Bestimmung) das Abdampfverhalten und die Veränderung der scheinbar dynamischen Viskosität [mPas] als Kriterium fortschreitender Oxidation unter thermischer Belatung (jeweils 72h Lagerung bei 230°C, Umluftofen) als vergleichende Messung bestimmt. Pro Prüfung beträgt die Probenmenge 5g (+/- 0,1 g). Durch Rückwaage wird das Abdampfverhalten in Gew.% bestimmt. Ebenfalls vergleichend wird durch die Theologische Bestimmung der scheinbar dynamischen Viskosität (Anton Paar-Rheometer rotierend, Scherrate 300-1 ) Rückschluss auf die thermische Alterung (z.B. Polymerisation) bzw. dem Schutz vor thermischer Alterung getroffen. Es werden gedeckelte Verdampfungsschalen aus Aluminium, Durchmesser 50 mm eingesetzt. Die 2 im Deckel befindlichen gegenüberliegenden Löcher haben einen Durchmesser von 5 mm und sind 10 mm vom Rand entfernt (siehe Figuren 1 und 2). Die Verwendung einer Stanzschablone ist hierbei sinnvoll, aber nicht zwingend erforderlich. Die beiden Schälchen werden mittels zweier Heftklammern am Falz der Schälchen zusammengeheftet. 2.1 The evaporation behavior and the apparently dynamic viscosity of composition 1 according to the invention and of comparative examples 1, 2, 3 and 4 are measured (capped dish tests, gas exchange takes place). For this purpose, the evaporation behavior and the change in the apparently dynamic viscosity [mPas] as a criterion of progressive oxidation under thermal loading (in each case 72 hours storage at 230 ° C., convection oven) is determined as a comparative measurement by means of a multiple determination (min. 3-fold determination). The sample amount per test is 5 g (+/- 0.1 g). The evaporation behavior in% by weight is determined by back-weighing. The theological determination of the apparently dynamic viscosity (Anton Paar rheometer rotating, shear rate 300-1) also makes comparative conclusions about the thermal aging (eg polymerization) or the Protection against thermal aging taken. Capped aluminum evaporation trays with a diameter of 50 mm are used. The 2 opposite holes in the lid have a diameter of 5 mm and are 10 mm from the edge (see Figures 1 and 2). The use of a punching template makes sense here, but is not absolutely necessary. The two bowls are attached to the fold of the bowls using two staples.
Die Ergebnisse sind in der nachfolgenden Tab. 2 und in den Figuren 3 The results are shown in Table 2 below and in Figures 3
(Abdampfverhalten) und 4 (scheinbar dynamische Viskosität) illustriert.  (Evaporation behavior) and 4 (apparently dynamic viscosity) illustrated.
Tab. 2  Tab. 2
Es zeigt sich, dass Hydroxytyrosol keinen merklichen Einfluss auf das It turns out that hydroxytyrosol has no noticeable effect on the
Abdampfverhalten hat. Ferner zeigt sich, dass Hydroxytyrosol als phenolischer Antioxidant hinsichtlich der Unterbindung radikalischer Alterungsprozesse eine vergleichbare Leistungsfähigkeit zeigt wie die im Stand der Technik als effizienter eingeschätzten Amine und deutlich besser wirkt als andere Phenole. 2.2 Um den Einfluss der Konzentration von Hydroxytyrosol bestimmen zu können, wurden zusätzlich die erfindungsgemäßen Zusammensetzungen 5, 6, 7 und 8 vergleichend untersucht. Die Ergebnisse sind in der nachfolgenden Tab. 3 und in Figur 5 (scheinbar dynamische Viskosität) illustriert. Has evaporation behavior. Furthermore, it is found that hydroxytyrosol as a phenolic antioxidant has a comparable performance with regard to the suppression of radical aging processes as that in the state of the art amines which are considered to be more efficient and works significantly better than other phenols. 2.2 In order to be able to determine the influence of the concentration of hydroxytyrosol, the compositions 5, 6, 7 and 8 according to the invention were additionally compared. The results are illustrated in Table 3 below and in Figure 5 (apparently dynamic viscosity).
Tab. 3 Es zeigt sich, dass Hydroxytyrosol bereits in sehr geringer Konzentration eine hohe Wirksamkeit hat.  Tab. 3 It can be seen that hydroxytyrosol is highly effective even in very low concentrations.
Beispiel 3: Bestimmung des Oxidationsbeginns und des Grenzwerts (Treshhold) des Oxidationsverlaufs ausgewählter Zusammensetzungen aus Beispiel 1 Example 3: Determination of the Start of Oxidation and the Limit (Treshhold) of the Oxidation Course of Selected Compositions from Example 1
Der Oxidationsbeginn und der Grenzwert (Treshhold) des Oxidationsverlaufs ausgewählter Zusammensetzungen aus Beispiel 1 wird mittels dynamischer DSC (Heizrate 1 °C/min) bestimmt. Bei der DSC-Messung wird vergleichend innerhalb eines Basisöles die Reaktionskinetik überwacht. Sichtbar wird dabei die chemische Dynamik innerhalb eines Stoffsystems, aus welcher wiederum auf das Oxidationsverhalten in Bezug auf den thermischen Energieeintrag geschlossen wird. Der Wert„Oxidationsbeginn“ beschreibt eine erste Signifikate Potential- änderung zum thermischen Energieeintrag und verweist somit auf die Verzöge- rung, welche eine Stoffmischung im Vergleich zu einer anderen Stoffmischung erfährt. Der„Grenzwert“ (Treshhold) beschreibt den Fortschritt des The start of oxidation and the limit value (Treshhold) of the course of oxidation of selected compositions from Example 1 is determined by means of dynamic DSC (heating rate 1 ° C./min). In the DSC measurement, the reaction kinetics are monitored comparably within a base oil. The chemical dynamics within a material system become visible, from which in turn the oxidation behavior in relation to the thermal energy input is inferred. The value "start of oxidation" describes a first significant change in potential for thermal energy input and thus refers to the delay that a mixture of substances experiences compared to another mixture of substances. The "limit" (Treshhold) describes the progress of the
Alterungs/Oxidationprozesses innerhalb des Stoffgemisches. Dies verweist indirekt auf die Reaktionsgeschwindigkeit des Oxidationsvorganges. Dieser Zusammenhang ist in Figur 6 illustriert. Aging / oxidation process within the mixture of substances. This points indirectly on the reaction rate of the oxidation process. This relationship is illustrated in FIG. 6.
Es wurden die in den nachfolgenden Tabellen 4-8 und den korrespondierenden Figuren dargestellten Ergebnisse erzielt. The results shown in Tables 4-8 below and the corresponding figures were achieved.
Tab. 4 (vgl. Fig.7: Oxidationsbeginn, Fig.8: Grenzwert)  Tab. 4 (see Fig. 7: Start of oxidation, Fig. 8: Limit value)
Es zeigt sich, dass die erfindungsgemäße Zusammensetzung 1 eine höhere Oxidationsresistenz als die Vergleichsbeispiele hat. It can be seen that composition 1 according to the invention has a higher oxidation resistance than the comparative examples.
Tab. 5 (vgl. Fig.9: Oxidationsbeginn, Fig.10: Grenzwert)  Tab. 5 (see Fig. 9: Start of oxidation, Fig. 10: Limit value)
Es zeigt sich, dass die erfindungsgemäße Zusammensetzung 2 eine höhere Oxidationsresistenz als das reine Basisöl (Vergleichsbeispiel 5) und als das mit der gleichen Menge an Antioxidationsmittel versehene Vergleichsbeispiel 6 hat. Darüber hinaus liegt der für die erfindungsgemäße Zusammensetzung bestimmte Oxidationsbeginn über und der Grenzwert nur geringfügig unterhalb des Grenzwerts des Vergleichsbeispiels 7 - obwohl dieses mehr als die zehn- fache Menge an Antioxidationsmittel aufweist. It can be seen that the composition 2 according to the invention has a higher oxidation resistance than the pure base oil (comparative example 5) and compared to comparative example 6 provided with the same amount of antioxidant. In addition, is for the composition of the invention determined start of oxidation above and the limit value only slightly below the limit value of Comparative Example 7 - although this has more than ten times the amount of antioxidant.
Tab. 6 (vgl. Fig.11 : Oxidationsbeginn, Fig.12: Grenzwert)  Tab. 6 (see Fig. 11: Start of oxidation, Fig. 12: Limit value)
Es zeigt sich, dass die erfindungsgemäße Zusammensetzung 4 eine höhere Oxidationsresistenz als die Vergleichsbeispiele hat. It can be seen that the composition 4 according to the invention has a higher oxidation resistance than the comparative examples.
Tab. 7 (vgl. Fig.13: Oxidationsbeginn, Fig.14: Grenzwert)  Tab. 7 (see Fig. 13: start of oxidation, Fig. 14: limit value)
Es zeigt sich, dass die erfindungsgemäße Zusammensetzung 3 eine höhere Oxidationsresistenz als die Vergleichsbeispiele hat. It can be seen that the composition 3 according to the invention has a higher oxidation resistance than the comparative examples.
Tab. 8 (vgl. Fig.15: Oxidationsbeginn, Fig.16: Grenzwert)  Tab. 8 (see Fig. 15: Start of oxidation, Fig. 16: limit value)
Es zeigt sich, dass Flydroxytyrosol bereits bei sehr geringen Einsatzkonzentra- tionen eine hohe antioxidative Wirkung hat. It can be seen that flydroxytyrosol has a high antioxidant effect even at very low application concentrations.

Claims

Patentansprüche claims
1. Schmiermittelzusammensetzung, enthaltend ein Basisöl sowie 1. Lubricant composition containing a base oil as well
Hydroxytyrosol und/oder Ester hiervon.  Hydroxytyrosol and / or esters thereof.
2. Schmiermittelzusammensetzung nach Anspruch 1 , dadurch 2. Lubricant composition according to claim 1, characterized
gekennzeichnet, dass die Ester eine Löslichkeit im Basisöl bei 25°C von mindestens 0,1 g/l, beispielsweise von 0,1 bis 5,0 g/l haben.  characterized in that the esters have a solubility in the base oil at 25 ° C of at least 0.1 g / l, for example from 0.1 to 5.0 g / l.
3. Schmiermittelzusammensetzung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Ester zumindest anteilig Carbonsäureester, insbesondere Ester aus Hydroxytyrosol und C2-io-Carbonsäuren, die verzweigt und/oder unverzweigt vorliegen können, ein oder mehrere Substitutenten, insbesondere Hydroxygruppen und/oder ein oder mehrere Carbonsäuregruppen aufweisen können, sind. 3. Lubricant composition according to claim 1 or 2, characterized in that the esters are at least partially carboxylic acid esters, in particular esters of hydroxytyrosol and C2-io-carboxylic acids, which may be branched and / or unbranched, one or more substituents, in particular hydroxyl groups and / or one or can have more than one carboxylic acid group.
4. Schmiermittelzusammensetzung nach einem oder mehreren der voran- gehenden Ansprüche, dadurch gekennzeichnet, dass die Ester zumindest anteilig Ester aus Hydroxytyrosol und Zitronensäure sind. 4. Lubricant composition according to one or more of the preceding claims, characterized in that the esters are at least partially esters of hydroxytyrosol and citric acid.
5. Schmiermittelzusammensetzung nach einem oder mehreren der voran- gehenden Ansprüche, dadurch gekennzeichnet, dass das Hydro- xytyrosol solubilisiertes Hydroxytyrosol ist. 5. Lubricant composition according to one or more of the preceding claims, characterized in that the Hydroxytyrosol is solubilized Hydroxytyrosol.
6. Schmiermittelzusammensetzung nach einem oder mehreren der voran- gehenden Ansprüche, dadurch gekennzeichnet, dass die Löslichkeit des Hydroxytyrosols durch Hinzufügen von C2-io-Carbonsäuren, die verzweigt und/oder unverzweigt vorliegen können, ein oder mehrere Substitutenten, insbesondere Hydroxygruppen und/oder ein oder mehrere Carbonsäuregruppen aufweisen können, als Solubilisierungs- mittel erhöht wurde. 6. Lubricant composition according to one or more of the preceding claims, characterized in that the solubility of the hydroxytyrosol by adding C2-io-carboxylic acids, which may be branched and / or unbranched, one or more substituents, in particular hydroxyl groups and / or one or can have more than one carboxylic acid group as a solubilizing agent.
7. Schmiermittelzusammensetzung nach einem oder mehreren der voran- gehenden Ansprüche, dadurch gekennzeichnet, dass der Anteil von Hydroxytyrosol und/oder von dessen Estern von 0,01 Gew.% bis 2 Gew.%, bezogen auf das Gesamtgewicht der 7. Lubricant composition according to one or more of the preceding claims, characterized in that the proportion of hydroxytyrosol and / or of its esters is from 0.01% by weight to 2% by weight, based on the total weight of the
Schmiermittelzusammensetzung, beträgt.  Lubricant composition.
8. Schmiermittelzusammensetzung nach einem oder mehreren der voran- gehenden Ansprüche, dadurch gekennzeichnet, dass das Basisöl ausgewählt ist aus der Gruppe bestehend aus Estern, Polyglykolen, naphtenischen und/oder aromatischen Mineralölen, synthetischen Kohlenwasserstoffen, Phenylethern, Polyalphaolefinen, nativen 8. Lubricant composition according to one or more of the preceding claims, characterized in that the base oil is selected from the group consisting of esters, polyglycols, naphthenic and / or aromatic mineral oils, synthetic hydrocarbons, phenyl ethers, polyalphaolefins, native
Basisölen und Derivaten von nativen Ölen und/oder Gemischen hiervon.  Base oils and derivatives of native oils and / or mixtures thereof.
9. Schmiermittelzusammensetzung nach einem oder mehreren der voran- gehenden Ansprüche, dadurch gekennzeichnet, dass das Basisöl eine Viskosität, gemessen bei 40 °C, im Bereich von 10 mm2/s bis 9. Lubricant composition according to one or more of the preceding claims, characterized in that the base oil has a viscosity, measured at 40 ° C, in the range from 10 mm 2 / s to
1000 mm2/s aufweist. 1000 mm 2 / s.
10. Schmiermittelzusammensetzung nach einem oder mehreren der voran- gehenden Ansprüche, dadurch gekennzeichnet, dass das Basisöl ausgewählt ist aus der Gruppe bestehend aus einem Ester einer aroma- tischen oder aliphatischen Di-, Tri- oder Tetracarbonsäure mit einem oder in Mischung vorliegenden C7- bis C22-Alkoholen, aus einem Poly- phenylether oder alkyliertem Diphenylether, aus einem Ester von 10. Lubricant composition according to one or more of the preceding claims, characterized in that the base oil is selected from the group consisting of an ester of an aromatic or aliphatic di-, tri- or tetracarboxylic acid with one or a mixture of C7- bis C22 alcohols, from a polyphenyl ether or alkylated diphenyl ether, from an ester of
Trimethylolpropan, Pentaerythrit oder Dipentaerythrit mit aliphatischen C7- bis C22- Carbonsäuren, aus Ci8-Dimersäureestern, hergestellt aus C7- bis C22-Alkoholen, aus Komplexestem, als Einzelkomponenten oder in beliebiger Mischung. Trimethylolpropane, pentaerythritol or dipentaerythritol with aliphatic C7 to C22 carboxylic acids, from Ci8 dimer acid esters, made from C7 to C22 alcohols, from complex esters, as individual components or in any mixture.
11. Verfahren zur Herstellung einer Schmiermittelzusammensetzung umfassend folgende Schritte: 11. A method for producing a lubricant composition comprising the following steps:
- Bereitstellung eines Basisöls, - provision of a base oil,
- Vermischen des Basisöls mit Hydroxytyrosol und/oder dessen Estern, wodurch diee Schmiermittelzusammensetzung erhalten wird.  - Mixing the base oil with hydroxytyrosol and / or its esters, whereby the lubricant composition is obtained.
12. Verfahren nach Anspruch 11 , dadurch gekennzeichnet, dass das 12. The method according to claim 11, characterized in that the
Vermischen des Basisöls mit Hydroxytyrosol und/oder dessen Estern in Gegenwart eines Solubilisierungsmittels stattfindet.  Mixing the base oil with hydroxytyrosol and / or its esters takes place in the presence of a solubilizing agent.
13. Verwendung einer Schmiermittelzusammensetzung nach einem oder mehreren der Ansprüche 1 bis 10 zur Schmierung der Oberflächen von Gleitpartnern in einem tribologischen System. 13. Use of a lubricant composition according to one or more of claims 1 to 10 for lubricating the surfaces of sliding partners in a tribological system.
14. Verwendung nach Anspruch 13 für H1 -Hochtemperaturanwendungen für Lebensdauer- und/oder Verbrauchsschmierung in Bauteilen wie insbesondere Ketten, Getrieben, Lagern, Armaturen und/oder Marine- bauteilen. 14. Use according to claim 13 for H1 high-temperature applications for life and / or consumption lubrication in components such as chains, gears, bearings, fittings and / or marine components.
EP19752696.5A 2018-08-23 2019-08-09 Use of a lubricant composition Active EP3841190B1 (en)

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