EP4090723B1 - Graisse hybride au complexe de lithium - Google Patents

Graisse hybride au complexe de lithium Download PDF

Info

Publication number
EP4090723B1
EP4090723B1 EP21704440.3A EP21704440A EP4090723B1 EP 4090723 B1 EP4090723 B1 EP 4090723B1 EP 21704440 A EP21704440 A EP 21704440A EP 4090723 B1 EP4090723 B1 EP 4090723B1
Authority
EP
European Patent Office
Prior art keywords
weight
lithium complex
hydrogenated
bearings
ester
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.)
Active
Application number
EP21704440.3A
Other languages
German (de)
English (en)
Other versions
EP4090723A1 (fr
Inventor
Stefan Grundei
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 EP4090723A1 publication Critical patent/EP4090723A1/fr
Application granted granted Critical
Publication of EP4090723B1 publication Critical patent/EP4090723B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • C10M169/02—Mixtures of base-materials and thickeners
    • 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
    • C10M105/18—Ethers, e.g. epoxides
    • 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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • C10M107/08—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing butene
    • 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
    • C10M107/38—Lubricating compositions characterised by the base-material being a macromolecular compound containing halogen
    • 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
    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
    • 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
    • C10M117/00—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
    • C10M117/06—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having more than one carboxyl group bound to an acyclic carbon atom or cycloaliphatic carbon atom
    • 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
    • C10M2205/026—Butene
    • C10M2205/0265—Butene 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
    • C10M2205/06—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
    • C10M2205/063—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes 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
    • C10M2207/04—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
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/1256—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids used as thickening agent
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/127—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic
    • C10M2207/1276—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic used as thickening agent
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
    • C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof used as thickening agents
    • 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
    • C10M2207/286—Esters of polymerised unsaturated 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
    • C10M2207/28—Esters
    • C10M2207/286—Esters of polymerised unsaturated acids
    • C10M2207/2865—Esters of polymerised unsaturated 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
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C10M2213/0606—Perfluoro polymers 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
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C10M2213/062—Polytetrafluoroethylene [PTFE]
    • C10M2213/0623—Polytetrafluoroethylene [PTFE] 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/02—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
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
    • 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
    • C10N2040/38—Conveyors or chain belts
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/10—Semi-solids; greasy

Definitions

  • the present invention relates to the provision of a new lithium complex hybrid grease based on a lithium complex grease in combination with a PFPE grease, which can be used at high temperatures, does not varnish and shows a low tendency to hardening.
  • the invention further relates to the use of the new lithium complex hybrid greases in components in the vehicle sector.
  • Hybrid fats are mixtures that consist of at least two base oils that cannot be mixed with each other.
  • Hybrid fats which contain urea or urea/PTFE mixtures as thickeners and ester/PFPE as immiscible base oil components, represent an important group of these fats. With these fats it is possible to create a temperature gap between approx. 180°C, as in fluorine-free greases can be achieved up to 270°C, which is possible with pure PTPE/PFPE greases. These products can also be adapted to specific requirements more easily than is possible with pure PFPE/PTFE greases.
  • PFPE oils there are very few soluble additives known for PFPE oils, so that, for example, the corrosion protection properties of PFPE oils can only be improved to a limited extent.
  • solid substances such as sodium nitrite or magnesium oxide are used as corrosion protection.
  • the uniform distribution of a solid on the surface of a component is much more difficult to ensure than wetting the surface of a component with an oil that contains a dissolved corrosion protection additive. Therefore, the additives contained in the non-fluorine-containing liquid phase of a hybrid grease can have properties such as Provide better corrosion protection than is possible with pure PFPE/PTFE grease.
  • the reduction in the content of PFPE oils in the hybrid grease and the lower density of the hybrid grease also result in significant cost advantages.
  • ester/PFPE/PTFE/urea fats for example in the EP0902828 B1 are described or the ester/PTFE/urea fats, such as those described in US 6,063,743 described have the disadvantage that these greases tend to harden at high temperatures and have very low oil separations. In addition, they can sometimes be critical when used with certain elastomers, so that they cannot be used in a wide range, such as roller bearings, in corrugating plants. In addition, the fluorinated fats are very expensive, so that there is also a need for hybrid fats that can be produced inexpensively with the same or even better properties than the fluorinated fats.
  • EP3372660 A1 describes high-temperature greases that contain an ester oil (estolide, trimellitic acid ester), a hydrogenated or fully hydrogenated polyisobutylene and a thickener.
  • ester oil estolide, trimellitic acid ester
  • polyisobutylene a hydrogenated or fully hydrogenated polyisobutylene
  • Lithium complex greases have higher oil separation and a lower tendency to harden at high temperatures compared to ester/urea greases.
  • the upper operating temperature is significantly lower than with urea hybrid greases, which is often associated with excessive oil separation or can be attributed to the use of base oils such as poly-alpha-olefins or mineral oils, which are less thermally stable.
  • An object of the present invention was therefore to provide a lithium complex hybrid grease which overcomes the above-mentioned disadvantages and which has adequate oil separation and low hardening even at high temperatures.
  • a method for lubricating or greasing components in particular in rolling bearings, plain bearings, transport and control chains in vehicle technology, is provided, which comprises applying the lubricant composition according to the invention.
  • a method for lubricating or greasing roller bearings in continuous casting plants, transport roller bearings in continuous furnaces, open gear rings in rotary kilns, tube mills, drums and mixers, bearings in corrugated cardboard plants or film stretching plants, bearings in plants for the production and transport of foodstuffs is provided Applying the lubricant composition according to the invention includes.
  • the lubricants according to the invention can contain additives and (H) solid lubricants as further components.
  • Component (A) is contained in the lubricant composition according to the invention in an amount of 70 to 7% by weight, preferably 60 to 15% by weight.
  • Component (A) is an ester or a mixture of esters, the ester being selected from the group consisting of trimellitic acid esters which have linear or branched alkyl groups as alkoxy groups which contain 6 to 18 carbon atoms, preferably 8 to 14 carbon atoms, where the Alkoxy groups can be the same or different, pyromellitic acid esters, preferably tetrakis (2-ethylhexyl) pyromellitate, hydrogenated or unhydrogenated dimer acid esters, preferably bis (2-ethylhexyl) dimerate, estolides.
  • trimellitic acid esters which have linear or branched alkyl groups as alkoxy groups which contain 6 to 18 carbon atoms, preferably 8 to 14 carbon atoms, where the Alkoxy groups can be the same or different
  • pyromellitic acid esters preferably tetrakis (2-ethylhexyl) pyromellitate
  • Estolides are esters that contain oligomeric units made up of homopolymers of hydroxycarboxylic acids, for example 12-hydroxystearic acid, or unsaturated carboxylic acids, for example such as oleic acid. Suitable estolides are, for example, in the US 6,018,063 , US 6,316,649 , WO 2018/177588 A1 and the US 2013/0261325 A1 described.
  • Component (B) is a polyisobutylene or polybutene and is present in the composition according to the invention in an amount of 0.5 to 20% by weight; 1.5 to 15% by weight is preferably used.
  • Component (B) is a polymer, such as that in Synthetics, Mineral Oils And Bio Based Lubricants Chemistry And Technology, Second Edition, Editor Leslie R. Rudnik, authors M. Casserino, J. Corthouts, CRC Press 2013, Pages 273 - 300, (ISBN 978-1-4398-5537-9 ) is described.
  • the properties of the fat according to the invention can be adjusted can be influenced in a desired way.
  • the polyisobutylene can be used in non-hydrogenated, hydrogenated or fully hydrogenated form, and a mixture of non-hydrogenated, hydrogenated and fully hydrogenated polyisobutylene can also be used.
  • Fully hydrogenated polyisobutylenes are preferably used. Due to the production process, the non-hydrogenated polyisobutylenes contain an unsaturated end group.
  • Polyisobutylenes are polymers whose bromine number is at least 20% lower than unhydrogenated polyisobutylene of the same number-average molecular weight.
  • the bromine number for a non-hydrogenated polyisobutylene with Mn of 1300 g/mol is 14 g bromine per 100 g polyisobutylene.
  • the bromine number is fully hydrogenated polyisobutylene is less than 7 g bromine per 100 g polyisobutylene.
  • the bromine number is determined according to ASTM D2170-09 (reaproved 2018).
  • the polyisobutylene has a number-average molecular weight of 115 to 10,000 g/mol, preferably 500 to 5,000 g/mol.
  • the number-average molecular weight is determined using gel permeation chromatography according to ISO 16014-1, edition 2019-05.
  • Component (C) is contained in the lubricant composition according to the invention in an amount of 1 to 18% by weight, preferably 4 to 14% by weight.
  • Component (C) is a lithium complex soap.
  • Lithium complex soaps are understood to mean mixtures of lithium salts of monofunctional carboxylic acids, preferably carboxylic acids that contain 8 to 22 carbon atoms, particularly preferably carboxylic acids that contain 14 to 20 carbon atoms, particularly preferably 12-hydroxystearic acid and / or stearic acid with the lithium salts of higher-functional carboxylic acids, preferably dicarboxylic acids with 6 to 14 carbon atoms, particularly preferably azelaic acid, sebacic acid and dodecanedioic acid.
  • Lithium complex soaps can additionally contain short-chain carboxylic acids such as acetic acid and lactic acid and / or phosphonic acids and / or boric acid as a further acid component.
  • Component (D) is a perfluoropolyether (PFPE) according to the formula (I): R 1 -(O-CF 2 ) v -(OC 2 F 4 ) w -(O- C 3 F 6 ) x -(O- CFCF 3 ) y - (O- CF 2 CF(CF 3 )) z - OR 2 (I) where R 1 and R 2 are identical or different and are selected from -CF 3 , -C 2 F 5 , or -C 3 F 7 , v, w, x, y, z are integers from ⁇ 0 to 500.
  • PFPE oils are sold, for example, under the brand names Aflunox ® , Krytox ® , Fomblin ® and Demnum ® .
  • the PFPE oils are contained in amounts of 15 to 50% by weight in the lubricant composition according to the invention.
  • the lithium complex hybrid grease according to the invention can comprise further thickeners (E) in addition to the lithium complex thickener.
  • the further thickeners (E) are contained in the lubricant composition according to the invention in amounts of 1 to 30% by weight, preferably 3 to 20% by weight.
  • the further thickeners (E) in the hybrid grease according to the invention are selected from the group consisting of Al complex soaps, metal simple soaps of the elements of the first and second main groups of the periodic table without lithium, metal complex soaps of the elements of the first and second main groups of the periodic table without lithium , bentonites, sulfonates, silicates, aerosil, polyimides or PTFE or a mixture of the aforementioned thickeners.
  • a particularly preferred further thickener is PTFE.
  • the preferred PTFE is as Micropowder is used, which is produced thermally or by irradiating high molecular weight PTFE to reduce the molecular weight.
  • the hybrid greases according to the invention can contain further oils (F), which are contained in the lubricant composition according to the invention in amounts of 0 to 20% by weight, preferably 2 to 20% by weight.
  • Component (F) is selected from the group consisting of mineral oil, alkylated benzenes, alkylated naphthalenes, aliphatic carboxylic acid and dicarboxylic acid esters, fatty acid triglycerides, alkylated diphenyl ethers, phloroglucin esters, estolides and/or poly-alpha-olefins, alpha-olefin copolymers, metallocene catalyzed poly-alfa-olefins.
  • Preferred further oils are alkylated diphenyl ether oils.
  • Alkylated diphenyl ether oils are sold, for example, by Moresco under the brand name Hilube® .
  • the alkyl groups contain between 10 and 20 carbon atoms. On average, between one and three alkyl groups are bound to the diphenyl ether basic unit.
  • the lubricant composition according to the invention further comprises from 0 to 10% by weight, preferably from 0.1 to 10% by weight, of additives (G), which are used individually or in combination.
  • the component (G) will be selected from the group consisting of corrosion protection additives, antioxidants, wear protection additives, UV stabilizers. Both additives that are soluble in component (A) and additives that are soluble in the PFPE oils of component (D) or insoluble in both oil phases can be used.
  • antioxidants are styrenated diphenylamines, diaromatic amines, phenolic resins, thiophenolic resins, phosphites, butylated hydroxytoluene, butylated hydroxyanisole, phenyl-alpha-naphthylamine, phenyl-beta-naphthylamine, octylated/butylated diphenylamine, di-alpha-tocopherol, di-tert-butyl-phenol or di-tert-butyl-4-methylphenol, benzenepropanoic acid, sulfur-containing phenolic compounds, phenolic compounds and mixtures of these components.
  • Suitable anti-corrosion additives 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, mixture of phosphoric acid and mono- and di-isooctyl esters reacted with (C 11-14 )-alkylamines, mixture of phosphoric acid and mono- and di-isooctyl esters reacted with tert-alkylamine and primary (C 12-14 ) amines, dodecanoic acid, triphenylphosphorothionate and amine phosphates.
  • IRGAMET ® 39 IRGACOR ® DSS G, Amin O; SARKOSYL ® O (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, and mixtures of these components. Most of the compounds mentioned have organic groups.
  • Commercially available anti-wear additives include IRGALUBE ® TPPT, URGALUBE ® 232, IRGALUBE ® 349, IRGALUBE ® 211 and ADDITIN ® RC3760 Liq 3960, FIRC-SHUN ® FG 1505 and FG 1506, NA-LUBE ® KR-015FG, LUBEBOND ® , F LUORO ® FG, SYNALOX ® 40-D, ACHESON ® FGA 1820 and ACHESON ® FGA 1810.
  • PFPE derivatives can also be included as additives.
  • Other suitable substances are, for example, WO01/72759A1 , WO 01/27916A1 , EP1070074B1 , EP1659165B1 and US2015011446A1 described.
  • the lubricant compositions according to the invention can contain solid lubricants (H) which are selected from the group consisting of BN, pyrophosphate, Zn oxide, Mg oxide, pyrophosphates, thiosulfates, Mg carbonate, Ca carbonate, Ca stearate, Zn sulfide, Mo sulfide, W sulfide, Sn sulfide, graphite, graphene, nanotubes, SiO 2 modifications or a mixture thereof.
  • the solid lubricants (H) are contained in the lubricant composition according to the invention in amounts of 0 to 10% by weight, preferably 2 to 5% by weight.
  • the lubricant composition according to the invention is used in the area of components, in particular in rolling bearings, plain bearings, transport and control chains in vehicle technology, in rail vehicles, conveyor technology, in film stretching systems, in corrugated cardboard systems, in roller bearings, fan bearings, bearings in traction motors, for the lubrication of bevel gear and Helical gears, springs, screws and compressors, pneumatic components, fittings, and machine components and in systems where occasional, unintentional contact with food occurs.
  • the production of the lubricant composition according to the invention is not restricted and can be carried out using any suitable process.
  • the production of the lubricant according to the invention can be carried out, for example, by producing a base oil mixture with components (A) and/or (B) and/or (F).
  • the acids required for the lithium complex thickener (C) and an aqueous lithium hydroxide solution are melted into this base oil mixture, which is placed completely or only partially in a suitable reaction vessel containing heating, cooling and stirring devices admitted.
  • the acids can be added and neutralized individually or the monocarboxylic acid is added and neutralized first and in a second step the higher functional carboxylic acid is added and neutralized.
  • the brew is heated to 130°C to drive off water.
  • the swelling of the thickener is carried out by thermal treatment at 150°C to 210°C.
  • the thermally treated brew is then cooled, and part of the base oil mixture can also be used.
  • the components (D), (E), (G), (H) and any components not used for the base oil mixture (A), (B) and (F) are added at a suitable temperature and pre-homogenized by stirring.
  • Solid lubricant additives that are soluble in the base oil mixture are added, for example, at temperatures above their melting point.
  • Liquid additives or non-melting additives/solid lubricants/thickener components are added at temperatures below 80°C.
  • the lithium complex hybrid grease produced in this way can be homogenized using suitable equipment such as three-roll mills, colloid mills or Gaulin.
  • the lubricant composition according to the invention is produced in one process.
  • the addition of the PFPE oil (D) and the optional thickener component (E) can be omitted in the process described above, so that a lithium complex grease is formed.
  • Components (D) and (E) can be combined to form a PFPE fat by stirring and homogenizing as described above.
  • Lithium complex grease and PFPE grease can be combined in a second process step and the lubricant composition according to the invention can be produced therefrom while stirring and homogenizing.
  • the production can also be carried out using continuous processes, whereby ready-made Li complex soap in powder form can also be used.
  • Lithium complex soap grease (fat A) and a PFPE/PTFE grease (fat B) are produced separately and the two fats A and B are mixed in different ratios, stirred and homogenized by rolling.
  • a lithium complex grease consisting of 77% of a mixture of an alkyl diphenyl ether (100 mm “/sec/40 ° C) and trimellitic acid ester as well as fully hydrogenated polyisobutylene (fully hydrogenated, Mn approx. 1300 g / mol) is used as a base oil, with a viscosity at 40 ° C of 220 mm 2 /sec, then 15% lithium complex from azelaic acid and 12-hydroxystearic acid, as well as 8% of an additive package consisting of amine antioxidants, phosphates, thiadiazoles, triazoles and amine phosphates are added. The full penetration is 270 1/10 mm (see Table 1)
  • a PFPE/PTFE grease is used, containing 70% of a mixture of linear and branched PFPE, kinematic viscosity 200 mm 2 /sec at 40°C, 26% PTFE micropowder, average particle size d 50 (laser diffraction, DIN ISO 9277) approx. 5 ⁇ m, specific surface area (DIN ISO 9277) approx. 5 m 2 /g, and 4% disodium sebacate as a corrosion protection additive.
  • the full penetration is 286 1/10 mm (see Table 1)
  • a urea hybrid fat is produced consisting of 50% by weight of fat B and 50% by weight of a urea fat.
  • the urea fat consists of a mixture of a trimellitic acid ester and a reaction product of octylamine and oleylamine with an MDI/TDI mixture as a urea thickener, as well as additives.
  • the base oil viscosity is approx. 80 mm 2 /sec.
  • the working penetration is 265 mm 2 /sec (see Table 2)
  • a urea hybrid fat consisting of a complex ester, dimer acid based, V 40 apr. 400 mm"/sec at 40°C and branched PFPE oil with a kinematic viscosity of approx. 400 mm 2 /sec in a mass ratio of 2:1.
  • the urea thickener is contained at 10% and is a reaction product of octylamine and oleylamine with a MDI/TDI mixture. In addition, it contains 8% by weight of PTFE powder (as in grease B) and 5% by weight of soluble additives (antioxidants, amine phosphates). The working penetration is 290 mm 2 /sec (see Table 2 )
  • Table 1 shows the general characteristics of the lithium complex hybrid greases according to the invention of Examples B2-B4, Reference Examples B1 and B5 and Fats A and B, ⁇ b> ⁇ u>Table 1 ⁇ /u> ⁇ /b> Parameters/Grease fat (B) B1 B2 B3 B4 B5 fat (A) Work penetration 60 dT [1/10 mm] (DIN ISO 2137) 286 279 254 253 262 273 270 Delta work penetration after 100,000 dT 15 28 31 45 44 39 45 [1/10 mm] (DIN ISO 2137) Dropping point [°C] (DIN ISO 2176) >300 >300 >300 >300 >300 294 >300 Flow pressure [mbar] (-40°C) (DIN 51805) 200 375 575 850 875 875 925 Flow pressure [mbar] (-50°C) (DIN 51805) 325 575 1025 >1400 >1400 >1400 >1400 Shear viscosity, at 25°C, shear rate 300 1/
  • Table 2 shows the data of comparative examples VG1 to 2.
  • ⁇ b> ⁇ u>Table 2 ⁇ /u> ⁇ /b> Parameters/Grease VG1 VG2 Work penetration 60 dT [1/10 mm] (DIN ISO 2137) 262 290 Delta work penetration after 100,000 dT [1/10 mm] (DIN ISO 2137) 47 43 Dropping point [°C] (DIN ISO 2176) 285 285 Flow pressure [mbar] (-40°C) (DIN 51805) 725 625 Flow pressure [mbar] (-50°C) (DIN 51805) 1200 1375 Shear viscosity, at 25°C, shear rate 300 1/s (DIN 53019 -1, -3) 5913 11880 Evaporation loss, 22h/100°C [% by weight] (DIN 58397) 0.37 0.42 Oil separation, 24h/150°C [wt%], (ASTM D 6184) 0.42 0.11 Oil separation, 72h/150°C [
  • the data also suggests that a desired oil separation behavior can be adjusted by choosing the amount of fats A and B.
  • the lubricant compositions according to the invention were tested for their thermal stability and the results were compared, in particular, with those of the urea hybrid greases. For this purpose, studies were carried out regarding the evaporation and viscosity under temperature stress of 5 g of fat in a stainless steel bowl at 200 ° C. The results are shown in Tables 3 and 4.
  • the evaporation loss is determined according to DIN standard 58397. Three evaporation loss dishes made of stainless steel are required for each fat sample. The geometry of the shells is described in the standard for determining evaporation loss (DIN 58397). At the beginning, the respective empty weight of the shells is determined. The three evaporation loss dishes are then filled with the fat sample. It is important to ensure that the grease is applied without any air bubbles. The surface is smoothed using a scraper and any excess fat that has found its way into the edge recess of the bowl is removed. The trays are then stored in a standard laboratory drying cabinet with convection with the flap closed at the appropriate test temperature (here 200°C).
  • the shear viscosity is determined according to DIN standard 53019 part 1 and part 3.
  • the fat samples are each transferred to three evaporation loss dishes made of stainless steel.
  • the geometry of the shells is described in the standard for determining evaporation loss (DIN 58397).
  • the trays are then stored in a standard laboratory drying cabinet with circulation at the appropriate test temperature (here 200°C). After the specified time period (48h, 96h, 144h and 168h), the bowls are removed from the drying cabinet and allowed to cool.
  • the starting value for the shear viscosity is determined for each grease before thermal loading.
  • Shear viscosity is measured using a device that is standardly used to determine the rheological parameters of lubricants (e.g. Rheometer MCR 302 from Anton Paar).
  • a cone-plate system (DIN EN ISO 3219 and DIN 53019) is used, preferably with a measuring cone that has a diameter of 25 mm.
  • the amount of fat sample required is based on typical amounts required for rheological measurements.
  • the measuring time is 120 s, of which 60 s is the tempering or holding time.
  • the measurements are taken at a constant shear rate of 300 1/s and a temperature of 25°C.
  • the value, which can be read after 90 s, represents the shear viscosity for the respective fat sample.
  • the average value is calculated from the three individual values determined and finally stated.
  • VG2 shows a shear viscosity of 100,000 mPas after just 96 hours and is no longer lubricable. After 168 hours of testing, VG1 shows a shear viscosity that is twice as high as all compositions B1 to B5 according to the invention, see Table 4.
  • the hardening behavior of the lubricants according to the invention at high temperatures is more favorable than that of urea hybrid greases.
  • the oil separation behavior of the lubricants according to the invention can be adjusted by choosing a specific mixing ratio of the fats A (lithium complex fat) and B (PTFE/PFPE fat) and can therefore be adapted to different requirements.
  • the lubricants according to the invention can be produced in various ways.
  • a lithium complex fat (fat C) and a PFPE/PTFE fat (fat D) are produced separately and then mixed in a kettle in a ratio of 40 to 60% by weight with stirring.
  • the resulting lithium complex hybrid grease B6 is then homogenized using a three-roll mill.
  • the lithium complex grease is produced identically to grease C, but when it cools down, the components of grease D are also added, so that the lubricant composition according to the invention is produced in one operation.
  • the lubricant composition B6 according to the invention is also finally rolled.
  • a lithium complex fat consisting of 80% by weight of a mixture of an alkyl diphenyl ether (100 mm 2 /sec at 40 ° C) and a trimellitic acid ester and fully hydrogenated polyisobutylene (fully hydrogenated, Mn approx. 1300 g / mol) is produced as a base oil, whereby a viscosity at 40°C of 100 mm 2 /sec. 15% by weight of a lithium complex made from azelaic acid and 12-hydroxystearic acid, as well as 5% by weight of an additive package consisting of aminic antioxidants and phosphates are provided. The full penetration is 327 1/10 mm.
  • the full penetration is 286 1/10 mm ⁇ b> ⁇ u>Table 7 ⁇ /u> ⁇ /b> Data from Example B6 according to the invention according to Example 2 Parameters / Grease Mixed in the kettle Cooked in situ Work penetration 60dT [1/10 mm] (DIN ISO 2137) 298 265 Dropping point [°C] (DIN ISO 2176) > 300 277 Delta work penetration to 100,000dT [1/10 mm] (DIN ISO 2137) 25 36 Flow pressure -40°C [mbar] (DIN 51805) 550 725 Flow pressure -50°C [mbar] (DIN 51805) 1025 1250 Shear viscosity, at 25°C, shear rate 300 1/s, [mPa*s] (DIN 53019-1, -3) 4392 5378 Evaporation loss, 24h/150°C [% by weight] (DIN 58397) 0.46 0.50 Oil separation, 30h/150°C [wt.-%] (ASTM D 6184) 0.44
  • B6 according to production example 1 and production example 2, can be used as a lubricant with both production variants.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Claims (14)

  1. Graisse hybride au complexe de lithium contenant
    (A) 60 à 15% en poids d'un ester ou d'un mélange d'esters sélectionné parmi le groupe constitué d'esters d'acide trimellitique qui présentent, sous la forme d'un groupe alkoxy, des groupes alkyles linéaires ou ramifiés qui contiennent 6 à 18 atomes de carbone, de préférence 8 à 14 atomes de carbone, le groupe alcoxy pouvant être identique(s) ou différent(s)*, des esters d'acide pyromellitique, des acides dimères hydrogénés ou non hydrogénés, des estolides,
    (B) 0,5 à 20% en poids de polyisobutylène non hydrogéné, hydrogéné ou intégralement hydrogéné ou leurs mélanges,
    (C) 1 à 18% en poids de savons complexes au lithium et
    (D) 15 à 50 % en poids de perfluoropolyéther (PFPE).
  2. Graisse hybride au complexe de lithium suivant la revendication précédente, ladite graisse hybride au complexe de lithium contenant en plus
    (E) 1 à 30% en poids d'un épaississant supplémentaire.
  3. Graisse hybride au complexe de lithium suivant une des revendications précédentes, ladite graisse hybride au complexe de lithium contenant en plus
    (F) 0 à 20% en poids, de préférence 2 à 20% en poids d'un autre composant huileux.
  4. Graisse hybride au complexe de lithium suivant une des revendications précédentes, ladite graisse hybride au complexe de lithium contenant en plus
    (G) 0 à 10 % en poids, de préférence 0,1 à 10 % en poids d'additifs.
  5. Graisse hybride au complexe de lithium suivant une des revendications précédentes, ladite graisse hybride au complexe de lithium contenant en plus
    (H) 0 à 10% en poids, de préférence 2 à 5% en poids de lubrifiant solide
  6. Graisse hybride au complexe de lithium suivant une des revendications précédentes, caractérisé en ce que l'ester d'acide pyromellitique du composant (A) est du Tetrakis(2-éthylhexyl)pyromellitate et l'acide dimère est du Bis(2-éthylhexyle)dimérate.
  7. Graisse hybride au complexe de lithium suivant la revendication 2, caractérisé en ce que le composant (E) est sélectionné parmi le groupe constitué de savons complexes en aluminium, de savons simples métalliques du premier et deuxième groupe principal du tableau périodique sans lithium, de savons complexes métalliques des éléments du premier et deuxième groupe principal du tableau périodique sans lithium, de bentonites, de sulfonates, de silicates, d'aérosil, de polyimides, de PTFE ou d'un mélange de ceux-ci.
  8. Graisse hybride au complexe de lithium suivant la revendication 3, caractérisé en ce que le composant (F) est sélectionné parmi le groupe constitué d'huile minérale, de benzènes alkylés, de naphtalènes alklylés, d'esters d'acide carboxylique et dicarboxylique aliphatiques, de triglycérides d'acides gras, d'éthers diphéniliques alkylés, d'esters de phloroglucines et/ou de poly-alpha-oléfines, de copolymères d'alpha-oléfines, de poly-alpha-oléfines catalysés par un métallocène.
  9. Graisse hybride au complexe de lithium suivant la revendication 4, caractérisé en ce que le composant (G) est sélectionné parmi le groupe constitué de d'additifs anticorrosion, d'antioxydants, d'additifs anti-usure, de stabilisants UV.
  10. Graisse hybride au complexe de lithium suivant la revendication 5, caractérisé en ce que le composant (H) est sélectionné parmi le groupe constitué de BN, de pyrophosphate, d'oxyde de Zn, d'oxyde de Mg, de pyrophosphates, de thiosulfates, carbonate de Mg, de carbonate de Ca, de stéarate de Ca, de sulfure de Zn, de sulfure de Mo, de sulfure de W, de sulfure de Sn, de graphite, de graphène, de nanotubes, de modifications SiO2 ou un mélange de ceux-ci.
  11. Utilisation de la graisse hybride au complexe de lithium suivant une des revendications précédentes pour la lubrification de composants, en particulier dans des roulements à billes, des paliers lisses, des chaînes de transport et de distribution de l'ingénierie automobile, des véhicules ferroviaires, de la manutention, des installations d'étirage de films, des installations d'onduleuses, des roulements à rouleaux, des paliers de moteurs de traction, pour la lubrification de mécanismes à engrenages coniques ou à engrenages droits, de ressorts, de vis et de compresseurs, de composants pneumatiques, de robinetterie et de composants de machines et dans des installations, dans lesquelles un contact occasionnel, non-intentionnel avec des aliments peut avoir lieu.
  12. Procédé de lubrification ou de graissage de composants, en particulier de roulements à billes, de paliers lisses, de chaînes de transport et de distribution de l'ingénierie automobile et de véhicules ferroviaires, le procédé comprenant :
    l'application d'une composition de lubrifiant sur la surface du composant, le lubrifiant comprenant :
    (A) 60 à 15 % en poids d'un ester ou d'un mélange d'esters, sélectionné parmi le groupe constitué d'esters d'acide trimellitique qui présentent, sous la forme de groupe alkoxy, des groupes alkyles linéaires ou ramifiés contenant 6 à 18 atomes de carbone, de préférence, 8 à 14 atomes de carbone, le groupe alkoxy pouvant être identique(s) ou différent(s), des esters d'acide pyromellitique, des acides dimères hydrogénés ou non-hydrogénés, des estolides,
    (B) 0,5 à 20% en poids de polyisobutylène non hydrogéné, hydrogéné ou intégralement hydrogéné ou un mélange de ceux-ci,
    (C) 1 à 18% en poids de savons complexes au lithium et
    (D) 15 à 50% en poids de perfluoropolyéther (PFPE).
  13. Procédé de lubrification ou de graissage de roulements à rouleaux dans des installations de coulée continue, de roulements à rouleaux de transport dans des fours continus, de roues à dents ouvertes dans des four rotatifs, de broyeurs tubulaires, de tambours et mélangeurs, de roulements dans des installations d'onduleuses et des installations d'étirage de films, de roulements dans des installations de fabrication et de transport d'aliments, le procédé comprenant :
    l'application d'une composition de lubrifiant sur la surface du composant, le lubrifiant comprenant :
    (A) 60 à 15 % en poids d'un ester ou d'un mélange d'esters, sélectionné parmi le groupe constitué d'esters d'acide trimellitique qui présentent, sous la forme de groupe alkoxy, des groupes alkyles linéaires ou ramifiés qui contiennent 6 à 18 atomes de carbone, de préférence 8 à 14 atomes de carbone, le groupe alkoxy pouvant être identique(s) ou différent(s), d'esters d'acide pyromellitique, d'acides dimères hydrogénés ou non hyydrogénés, d'estolides,
    (B) 0,5 à 20% en poids de polyisobutylène non hydrogéné, hydrogéné ou intégralement hydrogéné ou un mélange de ceux-ci,
    (C) 1 à 18 % en poids de savons complexes au lithium et
    (D) 15 à 50% en poids de perfluoropolyéther (PFPE).
  14. Procédé destiné à réduire le durcissement de graisses lubrifiantes à 200°C et/ou à réduire la séparation d'huile de graisses lubrifiantes sur des roulements à rouleaux dans des installations de coulée continue, de roulements à rouleaux de transport dans des fours continus, de roues à dents ouvertes dans des four rotatifs, des broyeurs tubulaires, de tambours et mélangeurs, de paliers dans des installations d'onduleuses et des installations d'étirage de films, de palier dans des installations de fabrication et de transport d'aliments, le procédé comprenant :
    l'application d'une composition de lubrifiant sur la surface du composant, le lubrifiant comprenant :
    (A) 60 à 15 % en poids d'un ester ou d'un mélange d'esters, sélectionné parmi le groupe constitué d'esters d'acide trimellitique qui présentent, sous la forme de groupe alkoxy, des groupes alkyles linéaires ou ramifiés qui contiennent 6 à 18 atomes de carbone, de préférence 8 à 14 atomes de carbone, le groupe alkoxy pouvant être identique ou différent, d'esters d'acide pyromellitique, d'acides dimères hydrogénés ou non hydrogénés, d'estolides,
    (B) 0,5 à 20% en poids de polyisobutylène non hydrogéné, hydrogéné ou intégralement hydrogéné ou les mélanges de ceux-ci,
    (C) 1 à 18% en poids de savons complexe au lithium et
    (D) 15 à 50% en poids de perfluoroéther (PFPE).
EP21704440.3A 2020-05-13 2021-02-03 Graisse hybride au complexe de lithium Active EP4090723B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020112993.9A DE102020112993A1 (de) 2020-05-13 2020-05-13 Lithiumkomplexhybridfett
PCT/EP2021/052523 WO2021228442A1 (fr) 2020-05-13 2021-02-03 Graisse hybride au complexe de lithium

Publications (2)

Publication Number Publication Date
EP4090723A1 EP4090723A1 (fr) 2022-11-23
EP4090723B1 true EP4090723B1 (fr) 2023-11-29

Family

ID=74586988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21704440.3A Active EP4090723B1 (fr) 2020-05-13 2021-02-03 Graisse hybride au complexe de lithium

Country Status (5)

Country Link
US (1) US20230138681A1 (fr)
EP (1) EP4090723B1 (fr)
CN (1) CN115461434B (fr)
DE (1) DE102020112993A1 (fr)
WO (1) WO2021228442A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114150525B (zh) * 2021-11-26 2022-12-27 上海东升新材料有限公司 一种纳米改性造纸用润滑剂
CN114574273B (zh) * 2022-03-18 2022-08-12 中国科学院兰州化学物理研究所 一种托轮轴瓦润滑油及其制备方法和应用

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3918107A1 (de) 1989-06-02 1990-12-06 Klueber Lubrication Schmierfettzusammensetzung
DE19622906A1 (de) 1996-06-07 1997-12-11 Klueber Lubrication Schmierfettzusammensetzungen
US6018063A (en) 1998-11-13 2000-01-25 The United States Of America As Represented By The Secretary Of Agriculture Biodegradable oleic estolide ester base stocks and lubricants
US6184187B1 (en) 1998-04-07 2001-02-06 E. I. Dupont De Nemours And Company Phosphorus compounds and their use as corrosion inhibitors for perfluoropolyethers
US6316649B1 (en) 1998-11-13 2001-11-13 The United States Of America As Represented By The Secretary Of Agriculture Biodegradable oleic estolide ester having saturated fatty acid end group useful as lubricant base stock
WO2001027916A1 (fr) 1999-10-14 2001-04-19 E.I. Du Pont De Nemours And Company Composes contenant du phosphore et de la fluorine comme lubrifiants de supports magnetiques
US6541430B1 (en) 2000-03-24 2003-04-01 E. I. Du Pont De Nemours And Company Fluorinated lubricant additives
JP5386803B2 (ja) * 2007-07-31 2014-01-15 Ｎｏｋクリューバー株式会社 グリース組成物
ITMI20042238A1 (it) 2004-11-19 2005-02-19 Solvay Solexis Spa Composti per fluoropolirterei
JP5310732B2 (ja) * 2008-10-17 2013-10-09 Ｎｏｋクリューバー株式会社 潤滑グリース組成物およびその製造法
WO2013120827A2 (fr) 2012-02-17 2013-08-22 Solvay Specialty Polymers Italy S.P.A. (per)fluoropolyéthers contenant des groupes terminaux bi- ou ter-phényle
US9018406B2 (en) 2012-03-27 2015-04-28 Biosynthetic Technologies, Llc Dicarboxylate-capped estolide compounds and methods of making and using the same
US20150175931A1 (en) * 2013-12-19 2015-06-25 Hyundai Motor Company Grease composition for engine bearing
DE102014018718A1 (de) * 2014-12-17 2016-06-23 Klüber Lubrication München Se & Co. Kg Hochtemperaturschmierstoffe
DE102014018719A1 (de) * 2014-12-17 2016-06-23 Klüber Lubrication München Se & Co. Kg Hochtemperaturschmierstoff für die Lebensmittelindustrie
EP3385358B1 (fr) * 2015-12-04 2020-06-03 NOK Klueber Co., Ltd. Composition lubrifiante
DE102018002041A1 (de) 2017-03-29 2018-10-04 Klüber Lubrication München Se & Co. Kg Neue Esterverbindungen, Verfahren zu ihrer Herstellung sowie ihre Verwendung
JP6755905B2 (ja) * 2018-07-27 2020-09-16 ミネベアミツミ株式会社 樹脂潤滑用グリース組成物および樹脂摺動部材

Also Published As

Publication number Publication date
WO2021228442A1 (fr) 2021-11-18
US20230138681A1 (en) 2023-05-04
EP4090723A1 (fr) 2022-11-23
DE102020112993A1 (de) 2021-11-18
CN115461434B (zh) 2024-03-22
CN115461434A (zh) 2022-12-09

Similar Documents

Publication Publication Date Title
EP2164935B1 (fr) Composition de graisse lubrifiante
EP3372660B1 (fr) Lubrifiants haute température
EP3375850B1 (fr) Lubrifiant haute température pour l'industrie alimentaire
DE19538658C2 (de) Schmierfettzusammensetzung
EP4090723B1 (fr) Graisse hybride au complexe de lithium
WO2012159738A1 (fr) Huile haute température
DE112013005199T5 (de) Schmierfettzusammensetzung für Nabenlagereinheit
DE112016007278T5 (de) Schmiermittelzusammensetzung und Nabeneinheit
DE10108343B4 (de) Verwendung einer Schmierfettzusammensetzung für ein Wälzlager
DE112010005707B4 (de) Schmiermittelzusammensetzung und dessen Verwendung
DE112018004265T5 (de) Schmierfettzusammensetzung
WO2021115685A1 (fr) Utilisation d'une composition de graisse lubrifiante ayant une température d'utilisation supérieure élevée
DE112013000604T5 (de) Schmiermittelzusammensetzung und Lager
EP3841190B1 (fr) Utilisation d'une composition lubrifiante
WO2020020476A1 (fr) Graisse hybride à faibles coefficients de frottement et à haute protection contre l'usure
EP4384589A1 (fr) Utilisation d'esters d'acide hémimellitique en tant qu'huile de base pour des compositions lubrifiantes
WO2023179897A1 (fr) Utilisation d'une composition lubrifiante pour équipement de lubrification
CN114058424A (zh) 非蔓延性润滑脂组合物
DD237183A1 (de) Pastenfoermige festschmierstoffkombination, vorzugsweise fuer den hochtemperaturbereich

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220818

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230829

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502021002082

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20231129

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502021002082

Country of ref document: DE

Representative=s name: PUSCHMANN BORCHERT KAISER KLETTNER PATENTANWAE, DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20231129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240329

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240329

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240301

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240229

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231204

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240229

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240221

Year of fee payment: 4