Classifications

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  • 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
  • C10M105/50—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen
  • C10M105/54—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen containing carbon, hydrogen, halogen and oxygen
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  • C10M113/00—Lubricating compositions characterised by the thickening agent being an inorganic material
  • C10M113/10—Clays; Micas
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  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
  • C10M125/26—Compounds containing silicon or boron, e.g. silica, sand
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  • 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
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  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
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  • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/04—Elements
  • C10M2201/041—Carbon; Graphite; Carbon black
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  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/04—Elements
  • C10M2201/041—Carbon; Graphite; Carbon black
  • C10M2201/0416—Carbon; Graphite; Carbon black used as thickening agents
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  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/06—Metal compounds
  • C10M2201/061—Carbides; Hydrides; Nitrides
• • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/06—Metal compounds
  • C10M2201/061—Carbides; Hydrides; Nitrides
  • C10M2201/0616—Carbides; Hydrides; Nitrides used as thickening agents
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  • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/06—Metal compounds
  • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/06—Metal compounds
  • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
  • C10M2201/0626—Oxides; Hydroxides; Carbonates or bicarbonates used as thickening agents
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  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/06—Metal compounds
  • C10M2201/065—Sulfides; Selenides; Tellurides
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  • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/06—Metal compounds
  • C10M2201/065—Sulfides; Selenides; Tellurides
  • C10M2201/0656—Sulfides; Selenides; Tellurides used as thickening agents
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  • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/085—Phosphorus oxides, acids or salts
• • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/085—Phosphorus oxides, acids or salts
  • C10M2201/0856—Phosphorus oxides, acids or salts 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/087—Boron oxides, acids or salts
• • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/087—Boron oxides, acids or salts
  • C10M2201/0876—Boron oxides, acids or salts used as thickening agent
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  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/10—Compounds containing silicon
  • C10M2201/102—Silicates
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  • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/10—Compounds containing silicon
  • C10M2201/102—Silicates
  • C10M2201/1026—Silicates used as thickening agents
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  • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/10—Compounds containing silicon
  • C10M2201/102—Silicates
  • C10M2201/103—Clays; Mica; Zeolites
  • C10M2201/1036—Clays; Mica; Zeolites used as thickening agents
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  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/10—Compounds containing silicon
  • C10M2201/105—Silica
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  • 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
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/10—Compounds containing silicon
  • C10M2201/105—Silica
  • C10M2201/1056—Silica 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
  • 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
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  • 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
  • C10M2213/04—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen
  • C10M2213/043—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen used as base material
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  • 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
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  • 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
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  • 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]
  • C10M2213/0626—Polytetrafluoroethylene [PTFE] used as thickening agents
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  • 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
  • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
  • C10M2229/04—Siloxanes with specific structure
  • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
  • C10M2229/051—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen
  • C10M2229/0515—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen used as base material
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  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2010/00—Metal present as such or in compounds
  • C10N2010/02—Groups 1 or 11
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  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2010/00—Metal present as such or in compounds
  • C10N2010/06—Groups 3 or 13
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  • C10N2010/00—Metal present as such or in compounds
  • C10N2010/08—Groups 4 or 14
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  • 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
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  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
  • C10N2030/02—Pour-point; Viscosity index
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  • 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
  • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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  • 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
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  • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
  • C10N2030/40—Low content or no content compositions
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  • 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
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  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/36—Release agents or mold release agents
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  • 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
• • C10N2220/022—
• • C10N2230/02—
• • C10N2230/08—
• • C10N2240/02—
• • C10N2240/58—
• • C10N2250/10—

Definitions

• the present invention relates to lubricating grease compositions that are especially suitable as high-temperature lubricating greases and find use for lubrication in oven systems, driers, dishwashers, electric motors or ventilators.
• Lubricating greases generally comprise a thickener dissolved or dispersed in a base oil, and dispersants are frequently employed for better and more stable distribution of the thickener.
• the thickener serves to establish the desired consistency, and a multitude of inorganic and organic compounds are used.
• Base oils used are mineral oils and synthetic oils. Frequently, perfluorinated polyalkyl ethers (PFPEs) are used, i.e. fluorinated synthetic oils having good lubrication properties that are chemically unreactive and stable at high temperature and therefore nontoxic (see, for example, “Synthetics, Mineral Oils and Bio-Based Lubricants”, Leslie R. Rudnick ed., Taylor & Francis, CRC Press, 2006).
• PFPEs perfluorinated polyalkyl ethers
• the composition may also comprise polytetrafluoroethylene (PTFE) and customary additives.
• EP 657 524 describes lubricating grease compositions comprising a mineral oil and/or a synthetic oil on a hydrogenated basis, a perfluorinated polyalkyl ether oil and PTFE as thickener.
• DE 10 2004 021 812 A1 describes a lubricating grease comprising a base oil, a thickener, especially a polyurea, and an inorganic material distributed in the lubricating grease, such as silicon dioxide.
• WO 2008/154997 A1 describes a lubricating grease comprising a base oil, an ionic liquid, a thickener and an additive.
• the ionic liquid is said to bring about an increase in the lifetime and lubricity of the lubricant and to serve to adjust the viscosity and the electrical conductivity.
• WO 2013/037456 therefore describes high-temperature greases comprising a fluorine-free base oil, a thickener that may be PTFE, additives and optionally a further fluorine-free oil component.
• EP 1589291 A1 discloses an oven pullout guide having rolling bodies arranged in a rolling body cage.
• the rolling body cage and the rolling bodies here have a lubrication layer which comprises a solid lubricant, for example graphite, molybdenum sulfide, tungsten disulfide or boron nitride, and is applied and baked in the form of a paint.
• a solid lubricant for example graphite, molybdenum sulfide, tungsten disulfide or boron nitride
• WO 2010/046456 A1 describes a pullout guide for a baking oven in which the tracks of the pullout guide have been lubricated with boron nitride and/or a polysiloxane-containing lubricant.
• EP 648 832 A1 describes lubricating grease compositions comprising a fluorinated polymer oil, boron nitride and optionally solid fluorinated polymers.
• the lubricating grease compositions are said to have good lubricating properties even under harsh operating conditions.
• US 2008/0167208 describes lubricating grease compositions comprising a perfluoropolyether oil having a kinematic viscosity of 50-1500 mm 2 /s at 40° C., optionally a thickener and further customary additives.
• the lubricating grease compositions are said to be usable at higher temperatures in contact with graphite or molybdenum disulfide as well.
• PTFE-containing lubricating greases form toxic vapors at relatively high temperatures and are additionally washed out relatively quickly in cleaning operations by water.
• PTFE-free lubricating greases in turn have the disadvantage that they are washed out even more quickly by water than PTFE-containing lubricating greases.
• a lubricating grease composition comprising at least one high-viscosity, fluorinated oil, hexagonal boron nitride and a binder.
• the present invention therefore relates to a lubricating grease composition
• a lubricating grease composition comprising
• the kinematic viscosity is measured with a SVM 300 viscometer, Anton Paar, at a temperature of 40° C.
• component (a) comprises fluorinated, especially perfluorinated, polyalkyl ether oils or fluorinated silicone oils, especially perfluorinated silicone oils, and mixtures thereof.
• Suitable perfluorinated polyalkyl ether oils are described, for example, in WO 97/47710 or EP 657 524, which are fully incorporated by reference.
• the perfluorinated polyalkyl ether oils conform to the formula:
• a 1 is —CF 3 , —C 2 F 5 , or —C 3 F 7 ;
• a 2 is —OCF 3 , —OC 2 F 5 , or —OC 3 F 7 ;
• a, b, c, d, e and f are randomly distributed and are 0 or an integer from 1 to 200, where not all of them can simultaneously be 0.
• e/a and f/a are in the range from 20 to 50 and b/a is in the range from 0.5 to 2.
• c and d are 0. More preferably, the perfluorinated polyalkyl ethers are formed from the following units:
• e/a is in the range from 20 to 50 and b/a in the range from 0.5 to 2.
• perfluorinated polyalkyl ether oils conform to the formula:
• a, e and f are randomly distributed and are 0 or an integer from 1 to 200, where not all of them can simultaneously be 0, and e/a and f/a are in the range from 20 to 50.
• perfluorinated polyalkyl ether oils conform to the formula:
• A′ is a perfluoropolyether chain comprising one or more repeat units selected from (CF 2 O), (CF 2 CF 2 O), (CF 2 CF 2 CF 2 O) and (CF 2 CF 2 CF 2 CF 2 O) and optionally (CF(CF 3 )O)—, (CF(CF 3 )CF 2 O)—, (CF 2 CF(CF 3 )O)— units;
• X and X′ are the same or different and are —CF 2 —, —CF 2 CF 2 — or optionally —CF(CF 3 )—;
• a and b are the same or different and are integers having a value of 0 or 1, with the proviso that the index a in the A block bonded to the end group T-O— is 1 and the index b in the A block bonded to the end group T′ is 0;
• j is an integer from 1 to 5
• j′ is an integer from 0 to 4, with the proviso that (j+j′) is greater than 2 and less than 5;
• R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are the same or different and are selected from halogen; H;
• z is an integer of not less than 2;
• z′ is 0 or an integer
• B′ is a block which derives from one or more olefins of the formula (Ia), but at least one of the substituents R 1 to R 8 is different than in block B, where (j+j′) is not less than 2 and less than 5;
• the end groups T and T′ are the same or different and are perfluoroalkyl groups having 1 to 3 carbon atoms, where a fluorine atom may be replaced by a chlorine or hydrogen atom; or nonfluorinated C 1 -C 6 -alkyl groups.
• component (a) may additionally comprise a nonfluorinated oil, especially a mineral oil.
• the nonfluorinated oil is generally present in an amount of 0.1% to 40% by weight, especially 0.5% to 30% by weight, based on the amount of the fluorinated oil.
• the lubricating grease composition further comprises boron nitride, especially hexagonal boron nitride.
• the lubricating grease composition comprises hexagonal ⁇ -boron nitride.
• the boron nitride has a BET surface area in the range from 10 to 20 m 2 /g, determined according to ISO 9277:2010.
• the boron nitride has a median particle size D50 of 1 to 10 ⁇ m, especially 2 to 6 ⁇ m, determined by means of laser diffractometry (Malvern Mastersizer 3000).
• a suitable boron nitride is available, for example, under the Boronid® trade name from ESK Ceramics GmbH & Co. KG, Germany.
• the lubricating grease composition further comprises a binder.
• the binder generally has a median particle size D50 in the range from 1 to 10 ⁇ m, preferably 2 to 8 ⁇ m, determined by means of laser diffractometry.
• the binder is selected from bentonite, alkali metal phosphates, aluminum phosphates, alkali metal silicates, alkaline earth metal silicates, aluminum silicates, alkaline earth metal carbonates, calcium borate, silicon dioxide, titanium dioxide, aluminum oxide and mixtures thereof. Preference is given to bentonite, alkali metal phosphates, aluminum phosphates and mixtures thereof.
• the binder is organically modified bentonite or a mixture of organically modified bentonite with at least one further binder selected from alkali metal phosphates, aluminum phosphates, alkali metal silicates, alkaline earth metal silicates, aluminum silicates, alkaline earth metal carbonates, silicon dioxide, titanium dioxide, aluminum oxide and mixtures thereof.
• the further binder is generally present in an amount of 0.1% to 50% by weight, especially 0.5% to 40% by weight, based on the amount of the organically modified bentonite.
• Preferred silicon dioxide is organically modified fumed silica
• preferred titanium dioxide is organically modified pyrogenic titanium dioxide.
• Modified fumed silica and modified pyrogenic titanium dioxide are products that have been surface-treated with an organosilane, especially with an alkylsilane.
• Corresponding products, such as Aerosil R 912, Aerosil R 812, Aerosil R 805, Aerosil R 202, Aeroxide® TiO 2 T 805, Aeroxide® TiO 2 NKT 90, VP NKT 65, are commercially available, for example from Evonik Industries AG, Germany or Wacker Chemie AG, Germany.
• Bentonite is a mixture of various clay minerals with montmorillonite (60% to 80%) as the most important constituent. Further accompanying minerals are quartz, mica, feldspar, pyrite or else calcite.
• montmorillonite encompasses all naturally occurring versions and modified bentonites. Bentonite is commercially available in the form of various commercial products. In the context of the present invention, preference is given to using organically modified, especially hydrophobically modified, bentonite, for example the commercial product BARAGEL® from Elementis Specialities Inc., USA.
• Organically hydrophobically modified bentonite can be obtained, for example, by the reaction of natural or purified bentonite with quaternary ammonium compounds in the manner of a cation exchange reaction in which, for example, alkali metal cations are exchanged for quaternary ammonium compounds.
• Quaternary ammonium compounds suitable for this reaction are, for example, those of the general formula R 1 R 2 R 3 R 4 N + X ⁇ where X is an equivalent of an anion, for example sulfate, hydrogensulfate, alkylsulfate, arylsulfate, alkylsulfonate, arylsulfonate, halide, phosphate, carbonate, alkylphosphate, alkylcarbonate, nitride, alkoxide, hydroxide, tetrafluoroborate or perchlorate, especially halide, and R 1 , R 2 , R 3 or R 4 may be the same or different and may be C 1 -C 20 -alkyl.
• R 1 and R 2 may be the same or different and may be C 1 -C 4 -alkyl
• R 3 and R 4 may be the same or different and may be C 12 -C 20 -alkyl.
• X is halide, especially chloride
• R′ and R 2 are methyl
• R 3 and R 4 are the same or different and are C 16 -C 18 -alkyl.
• the commercial product BARAGEL ⁇ is bentonite modified with Me 2 N(C 16 -C 18 -alkyl) 2 Cl.
• the lubricating grease composition in a preferred embodiment, additionally comprises water in an amount of 0.01% to 1% by weight, especially 0.05% to 0.2% by weight, based on the total mass of the composition.
• Water serves here as an activating agent for bentonite, especially for activation of the dispersing and thickening properties of bentonite.
• the lubricating grease composition of the invention may comprise at least one additive, especially an additive customary in the field of lubricating grease compositions.
• the additive is preferably selected from antioxidants, for example functionalized perfluoropolyalkyl ethers as described in EP 1 354 932 A1 and U.S. Pat. No. 5,550,277; antiwear additives, for example functionalized perfluoropolyalkyl ethers as described in WO 2016/020232; anticorrosives, for example sodium sebacate, functionalized perfluoropolyalkyl ethers as described in U.S. Pat. No. 5,550,277; dyes, for example azo dyes, and solid lubricants, for example molybdenum disulfide, tungsten disulfide, tin sulfide.
• the lubricating grease composition of the invention comprises
• the lubricating grease composition of the invention comprises
• the lubricant composition is essentially free of PTFE.
• the lubricating grease composition is essentially free of an ionic liquid.
• the lubricating grease composition is essentially free of graphite.
• Essentially free means that the lubricating grease composition contains less than 0.5% by weight of PTFE, less than 0.5% by weight of ionic liquid or less than 0.5% by weight of graphite, especially 0% by weight of each of these components, based on the total mass of the composition.
• the lubricating grease composition of the invention is generally produced by mixing the components under high shear force, for example using a rotor-stator mixer, optionally followed by a homogenization, for example using a roll mill.
• the lubricating grease compositions of the invention have a number of advantageous properties compared to known lubricating greases:
• the lubricating grease compositions of the invention are suitable for lubrication within the temperature range from ⁇ 30° C. to 700° C., especially +20 to 300° C. They can therefore be used in many fields. For instance, they are usable for the lubrication of sliding guides and running wheels in oven systems or roller bearings and slide bearings in driers, electric motors or ventilators, for the lubrication of molds, especially molds for the injection molding of plastics, machines and installations, especially for the food and animal feed industry.
• Examples of applications are the lubrication of: roller bearings and slide bearings, sliding guides, valves, joints, slides, pillar guides, ejectors and other sliding surfaces as, for example, in circular conveyor systems, painting lines, calenders, kiln cars, ventilators, switches, film stretching systems, extraction systems, textile machinery, wood press systems, pumps, driers, motors, tire molds, construction machinery, electrical engineering and automobile technology, elastomer and plastics technology, and applications in the corrugated cardboard industry, paper industry and steel industry, and machinery and installations, for example, in the food and animal feed industry.
• the lubricating grease composition of the invention is used for the lubrication of sliding guides and running wheels in oven systems or roller bearings and slide bearings in driers, electric motors or ventilators.
• the lubricating grease compositions of the invention for the lubrication of oven pullout rails.
• the lubricating grease composition is applied by application to the parts to be lubricated in an amount suitable for lubrication. Preference is given to applying the lubricating grease composition of the invention as a paste. This form of application enables very exact selection and coating of the application areas.
• the lubricating grease composition can be applied in a simple manner without the lubricating grease composition flowing away or dripping off, for example, at the ends of the tracks of oven pullout rails.
• An optional aftertreatment by slide grinding after the application of the lubricating grease composition enables better distribution and adhesion of the lubricating grease on a metallic substrate, for example.
• the lubricant composition is thixotropic, meaning that the viscosity decreases under mechanical action and the original viscosity is re-established after the shear stress has ended.
• the pastes can be distributed relatively easily on the surface of oven pullout rails, for example, under pressure without dripping off.
• boron nitride 5% by weight Boronid®, ESK Ceramics GmbH & Co. KG, Germany
• an anticorrosive 2% by weight, Irgacor®, BASF SE, Germany
• the resulting lubricant grease was homogenized with a roll mill.
• the figures in % by weight are each based on the total weight of the lubricant grease.
• the lubricating grease composition produced according to example 1 was first subjected to a VKA test (four-ball apparatus, ASTM D1831/DIN 51350-4).
• the VKA welding force was determined as 4800 N and the VKA wear as 0.9 mm under a load of 150 kg/1 min.
• the thermal stability was also determined at 300° C.
• a measure employed for the thermal stability was the evaporation rate with time:
• Test Cycles 24 000 parameters: Additional load: 7.5 kg Temperature: 250° C. Speed: 10 cycles/min Level: middle level in the baking oven Pullout: restriction by 20 mm in both directions Test 1. Installation of the rails procedure: 2. Application of the test load in the middle of the baking sheet 3. Endurance test for 24 000 cycles 4. Determination of the movement force and lowering after every 6000 cycles 5. Machine dishwasher cycle after every 6000 cycles 6. Deinstallation and examination of the rails 7. Evaluation
• composition of the comparative examples (% by weight, based on the total weight of the composition):

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

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• 2016
  • 2016-08-16 ES ES16754263T patent/ES2902836T3/es active Active
  • 2016-08-16 US US15/753,786 patent/US20180245010A1/en not_active Abandoned
  • 2016-08-16 EP EP16754263.8A patent/EP3337879B1/de active Active
  • 2016-08-16 WO PCT/EP2016/069423 patent/WO2017029287A1/de active Application Filing
  • 2016-08-16 CN CN201680047719.8A patent/CN108026465A/zh active Pending
• 2018
  • 2018-12-27 HK HK18116649.1A patent/HK1257564A1/zh unknown

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