EP2250244A1 - Composition de lubrifiant à base d'eau peu à fortement visqueuse - Google Patents

Composition de lubrifiant à base d'eau peu à fortement visqueuse

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Publication number
EP2250244A1
EP2250244A1 EP09713978A EP09713978A EP2250244A1 EP 2250244 A1 EP2250244 A1 EP 2250244A1 EP 09713978 A EP09713978 A EP 09713978A EP 09713978 A EP09713978 A EP 09713978A EP 2250244 A1 EP2250244 A1 EP 2250244A1
Authority
EP
European Patent Office
Prior art keywords
water
lubricant composition
composition according
lubricant
soluble
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.)
Withdrawn
Application number
EP09713978A
Other languages
German (de)
English (en)
Inventor
Heinz Dwuletzki
Manfred Müller
Peter Eisner
Andreas Malberg
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.)
CARL BECHEM GMBH
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Technische Universitaet Braunschweig
Original Assignee
Carl Bechem GmbH
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Technische Universitaet Braunschweig
Fraunhofer Institut fuer Verfahrenstechnik und Verpackung IVV
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40848650&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2250244(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Carl Bechem GmbH, Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV, Technische Universitaet Braunschweig, Fraunhofer Institut fuer Verfahrenstechnik und Verpackung IVV filed Critical Carl Bechem GmbH
Publication of EP2250244A1 publication Critical patent/EP2250244A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • 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
    • C10M2209/12—Polysaccharides, e.g. cellulose, biopolymers
    • 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
    • C10M2209/12—Polysaccharides, e.g. cellulose, biopolymers
    • C10M2209/126—Polysaccharides, e.g. cellulose, biopolymers 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/221—Six-membered rings containing nitrogen and carbon only
    • C10M2215/222—Triazines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/0213—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds 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
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/024—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amido or imido group
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/028—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C10M2219/106—Thiadiazoles
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • 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
    • 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
    • C10M2229/02—Unspecified siloxanes; Silicones
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • 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
    • C10N2030/64—Environmental friendly compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • 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
    • C10N2040/08—Hydraulic fluids, e.g. brake-fluids
    • 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
    • C10N2040/20—Metal working
    • C10N2040/22—Metal working with essential removal of material, e.g. cutting, grinding or drilling

Definitions

  • the invention relates to the field of tribology, especially the structure and uses of lubricants mainly for metal cutting and high-performance grinding, especially for carbide machining and takes the priority of the German patent application 10 2008 011 781.1 from February 28, 2008 to complete.
  • the DIN 51502 and especially the DIN 51385 generally define lubricants and especially cooling lubricants for metalworking:
  • Lubricant A liquid, plastic-solid, solid or gaseous medium which has the task of reducing friction and wear when sliding or rolling contact between two points, lines or surfaces moving together. According to DIN 51502, the lubricants are divided into different groups that can be differentiated.
  • Lubricants in the narrower sense of the present invention are understood in particular as meaning substances or substance mixtures which bring about a reduction in the friction of the base fluid (here: water) which, in order to improve the tribological load capacity, increases the surface pressure by at least 10 N / mm 2 , an increase in the specific surface pressure by at least 1,000 N / cm 2 and / or an increase in the load by at least 1,000 N good load.
  • base fluid here: water
  • VKA Shell four-ball apparatus
  • Cooling lubricant According to this classification, cooling lubricants are listed as oils. DIN 51385 defines those substances as cooling lubricants which are used for cooling and lubricating during separation and partly during forming of materials, in particular of metals.
  • the non-water-miscible cooling lubricants are predominantly produced from mineral oils or ester oils, have a species-specific, for use as a lubricant for metalworking specific viscosity, which is usually between V 40 ⁇ 3 and 1000 mm 2 / s at 40 0 C.
  • Water-miscible cooling lubricants are in the aqueous dilution according to the application a true solution or emulsion with the outer phase of water. These aqueous dilutions have viscosities which, depending on the concentration of the concentrate in water, have viscosities of 0 ⁇ V 40 ⁇ 3 mm 2 / s at 40 ° 0 C result.
  • fluids having an application viscosity of V 40 > 3 mm 2 / s are used for metal cutting based on non-water-miscible base fluids such as mineral oil and esters or water-mixed cooling lubricants having an application viscosity of V 40 ⁇ 3 mm 2 / s at 40 0 C.
  • Forming Forms Cutting including grinding with a rotating tool
  • This manufacturing method is always used when high surface quality of the workpiece is required or other processing methods are not suitable due to the nature of the material. Typical examples of this are the manufacture of tools and gears for gearbox construction.
  • High-quality solid carbide tools are mainly produced by grinding with diamond or CBN grinding tools.
  • the use of mineral oil- or ester-based non-water-miscible cooling lubricants describes the state of the art.
  • the time-wasting volume Q ' w (mm 3 / mms) can be considered.
  • Q'w of 3-7 mm 3 / mms have been stably realized in manufacturing up to now.
  • the aim of the invention is to provide lubricants for metalworking available that uses stabilized viscosity by the cooling effect of water to improve thermally demanding machining operations with water-miscible lubricants.
  • the invention according to claim 1 proposes a single-phase, low-viscosity to high-viscosity adjusted water-based lubricant composition having an average water content of> 80%, which contains polymers.
  • This composition is mineral oil-free and contains a polymeric lubricant that is water-soluble in the temperature range from 10 0 C to 9O 0 C.
  • These polymers are preferably conventional thickeners, which were previously used according to the prior art only for adjusting the desired viscosity of a lubricant composition.
  • these thickeners themselves have lubricant properties, ie that these thickeners are lubricants in the context of the invention. It follows that the lubricant compositions according to the invention can rely on the necessary use of other lubricants, ie lubricants other than the mentioned thickeners.
  • the thickening agents may thus be the only lubricants in the lubricant composition according to the invention.
  • the invention makes it possible for the first time to machine high-performance tools with water-based lubricants such that significantly higher performance data (up to about 30%) can be realized.
  • significantly higher performance data up to about 30%
  • the liquids according to the invention already show a significantly better tribological performance than mineral oil and water even without any addition of performance-enhancing additives.
  • An exemplary comparison is given in Table 1.
  • Mineral oil as the commonly used base liquid of non-water-miscible cooling lubricants, constitutes the reference point for the development of the novel base liquid according to the invention.
  • Tribological test systems such as e.g. Reichert friction wear balance, Brugger wear test stand and shell four-ball apparatus allow differentiation in terms of tribological properties.
  • lubricants are decisively influenced by his abilities, i.a. to minimize the occupational health burden of the users, to exclude the risk potential through fire and explosion and to offer the least negative impact on the environment.
  • Cooling lubricants have as hazardous substances an air limit, which is determined as a sum value from portions of the vapor and the aerosol. As a lead substance hydrocarbons are determined here.
  • Water-mixed coolants are susceptible to microbial attack by bacteria, fungi and yeasts.
  • biocides bactericides and fungicides
  • significant amounts of biocides must be added, which may be an important side effect u.a. cause allergic reactions in humans.
  • Another object was to develop a water-based lubricant that should have as far as possible without biocides extensive bioresistance and thus in practice does not lead to odor nuisance by microbial infestation ("Monday odor").
  • the liquids according to the invention have exceptional biological stability and are capable of long useful life even without the addition of biocides, without any significant change in the properties, such as e.g. the viscosity becomes clear.
  • liquids according to the invention form a surface-covering film on the workpiece surface, which surprisingly offers protection against corrosion and can nevertheless easily be washed off again.
  • Liquids have a substance-specific viscosity, which can be changed by application of special additives; These include predominantly polymers (Ullmann's Encyclopedia of Industrial Chemistry, Römps Lexikon der Chemie and Dieter Klamann “Lubricants and Related Products", Production, Properties, Application, Verlag Chemie, Weinheim, 1982, pp. 84 ff).
  • VI improvers are very effective in non-water-miscible liquids, e.g. Mineral oils and ester oils.
  • water-soluble polymers such as cellulose derivatives, sugars, sugar derivatives, polyvinylpyrrolidone compounds are used successfully.
  • Viscous aqueous fluids are technically usable in particular as cooling lubricants, if further requirements are also met, such as corrosion protection against iron, aluminum and non-ferrous metals and their alloys, tribological effectiveness in the contact between tool and workpiece, stability against microbial colonization, high flushing - and mesh effect to remove abrasion and chips from the cutting zone and fulfill all obligations under European Chemicals Law.
  • inventive entries of polymers in water viscosities of 2 are - 46 mm 2 / s was obtained (40 0 C), which allow the adjustment of the lubricant typical ISO viscosity grades according to ISO 3448 or DIN 51 519 (ISO-classes of 2 to 46), as shown in Table 2 clearly.
  • the completely water-soluble polymer blends have high shear stability and stability in water and can be prepared independently of the temperature.
  • the polymers (thickeners) for adjusting the viscosity of the water which can be used according to the invention are, for example:
  • a) natural polymers such as polysaccharides of the neutral scleroglucan type with molecular weights of about 10 5 daltons (for example Biovis); anionic polysaccharides having molecular weights greater than 10 6 daltons of the xanthan type (for example NovoXan);
  • carboxymethylcelluloses for example sodium carboxymethylcellulose with viscosities of 10-40,000 mP s as a 2% solution in water (eg Walocel grades CRT) polyanionic cellulose with viscosities of 25-5000 mP-s as 2% solution in water (eg Antisol FL types); also cellulose types with different substituents such as DTKHV or aH 75 (trade names); c) synthetic polymers such as the medium charge cationic polyelectrolyte (eg Zetag 7563 from Ciba-Geigy) and neutral polyvinylpyrrolidone types with molecular weights of about 10 5 - 10 6 daltons.
  • medium charge cationic polyelectrolyte eg Zetag 7563 from Ciba-Geigy
  • neutral polyvinylpyrrolidone types with molecular weights of about 10 5 - 10 6 daltons.
  • thickeners polymers which have good solubility in water.
  • polymers which are soluble in both cold and warm or hot water.
  • solubility is understood to mean the following: The entry of the polymer into deionized water results in a clear, transparent, homogeneous mixture with proportionally increasing viscosity, which remains constant over time. This solubility is given especially also at about 1O 0 C and 90 0 C.
  • thickeners are used which have a solubility of at least 5 percent by weight of the thickener in water at any temperature, preferably also at 10 0 C and 90 0 C and allow a viscosity of the lubricant composition of up to 1,000 mnrWs, if they are the only Lubricant component can be used in the composition of the invention.
  • salts of modified celluloses are used.
  • these are biologically stable and, on the other hand, are very soluble in water. They are therefore also easy to process.
  • modified celluloses are carboxymethylcelluloses or heteroglucan structures. Particular preference is given to salts of carboxymethylcelluloses, for example the sodium salt of carboxymethylcellulose.
  • At least one further criterion is met.
  • the thickener should be organic polymer having a temperature-independent solubility of at least 50 g / 1000 g of water, resulting in a viscosity of at least 1,000 mm 2 / s (4O 0 C), and a tribological improvement of the load carrying capacity of the Brugger, Reichert and VKA compositions of at least 10%, at least 20% or preferably at least 30% compared with mineral oil-based lubricant compositions (see for example Table 1) and biodegradability according to the Guideline "OECD Guidline for testing of Chemicals no. 301 "of no more than 5% after 28 days.
  • compounds of the following group can preferably be used for the production of the composition according to the invention: xanthan and scleroglucan type natural polysaccharides and carboxymethylcellulose derivatives, in particular their salts (for example sodium salt).
  • the additional amounts of the water-soluble polymers used according to the invention for adjusting the viscosity of water are preferably in the range from 0.2 to 5% by weight of the aqueous phase.
  • the lubricant composition of the invention is single phase, i. all compounds contained therein are water-soluble. This also applies to the functional (that is, chemically non-inert) additives, i. These are also water-soluble. However, it is not excluded that chemically inert additives such as pigments are included in the composition.
  • Reaction products of fatty acids with at least C8 chain length with alkanolamines such as monoethanolamine, triethanolamine, diglycolamine, isobutanolamines or hydroxides such as potassium hydroxide, sodium hydroxide
  • Wear protection additives up to 3%: Water-soluble phosphoric acid derivatives, in particular neutralized phosphoric acid ester derivatives
  • Heavy metal inhibitors up to 1%: based on water-soluble triazole and thiadiazole derivatives
  • heterocyclic nitrogen compounds having a particularly strong inhibitory effect z For example, 1 H-benzotriazole, 5-methylbenzotriazole, 5-carboxybenzotriazole, benzothiazole, 2-alkylbenzothiazole, 2-mercaptobenzothiazole, 2-mercaptobenzothiazole succinic acid are used. Further preferred heterocyclic nitrogen compounds are benzimidazole, 2-alkylbenzimidazole, 2- (5-aminopentyl) benzimidazole, benzoxazole and 2-mercaptobenzoxazole. Heterocycles with alkyl side groups reduce water solubility and thus improve the long-term effect of the corrosion inhibitor.
  • composition according to the invention usually has at least one corrosion inhibitor in addition to the thickener as lubricant component (preferably as sole lubricant component). If the composition is also to be used in particular for hard metal processing, it should possibly also have at least one heavy metal inhibitor.
  • Formaldehyde-releasing compounds especially hexahydrotriazine compounds, methyl bisoxazolidine compounds; Heterocycles, in particular benzisothiazolinone compounds, sodium pyrithione and isothiazolone compounds
  • At least one polyhydric alcohol may additionally be provided as a further lubricant component, which is preferably selected from the groups of polyalcohols and carbohydrates, particularly preferably from alkanediols and alkanetriols, particularly preferably glycerol and the polyethers derived therefrom, as well as glucose, arabinose , Ribulose, fructose and the derived oligo- and / or polysaccharides and their esters and ethers.
  • the amount of the polyalcohol based on the composition may be at least 10%, preferably at least 20%, at least 30% or at least 40% or more.
  • the thickeners in particular the celluloses such as carboxymethylcellulose (in particular sodium carboxymethylcellulose) for the preparation of the compositions according to the invention, can advantageously be used in aqueous form.
  • carboxymethylcellulose especially the sodium carboxymethylcellulose, in the form of an aqueous solution or suspension, which can be removed directly from the modification or production of the polymer - and not a dried powder of cellulose - is used for the preparation of the composition ,
  • the viscosity of the ready-mixed lubricant composition changes significantly less over the course of several days than is the case when a dry powder has been processed. It is thus preferred that the polymer, after its modification, is used directly in the production of lubricant without it having previously undergone drying.
  • the solutions used are particularly advantageously removed directly from the production process of the thickeners, in particular modified natural substances, and are processed to a lubricant composition within a few days.
  • the resulting fast and more homogeneous adjustment of the viscosity also enables more stable processing properties to be achieved.
  • a more viscous lubricant composition can thus be achieved.
  • a certain residual water content should not be exceeded in the polymer after the modification in order to achieve the improved processing properties of the polymer-water mixture. More preferably, the water content of the modified polymer after the modification should not be lowered below 5%.
  • the thickener can be used as a dry powder. But then, for example, it should be allowed to swell up to 24 hours in advance in order to achieve the improved processing properties of the polymer-water mixture. It is thus also possible to achieve mixtures which, after their preparation over a relatively long period, i. have viscosity-stable properties over several days.
  • the improved viscosity stability of the compositions can minimize tool wear or improve workmanship.
  • example 1 The improved viscosity stability of the compositions can minimize tool wear or improve workmanship.
  • alkalizing agent e.g. Alkanolamine or alkali hydroxide with 0.7% anticorrosive acids
  • alkalizing agent e.g. Alkanolamine or alkali metal hydroxide with 0.7% anti-corrosive acids and stirred until clear reaction (about 1 hour). Thereafter, wetting agents, solubilizers, heavy metal inhibitors are added and the reaction mixture is added by adding 0.75% polymer, e.g. Antisol FL 100 adjusted to the desired viscosity.
  • the new water-based, viscous adjusted coolants invention provide in operational practice significantly higher performance in high-performance grinding applications compared to both conventional non water-miscible coolants and conventional water-miscible cutting fluids, allowing for the first time removal rates Q 'w (mm 3 / mms) to realize of ⁇ 12th This means doubling the productivity in the production of tools solely by using the water-based lubricant according to the invention.
  • Comparative criteria are the Q'w (mm 3 / mms), the number of grooves to dressing the grinding wheel and the wear of the grinding wheel. In this case, values were obtained, which are listed in Table 3.
  • novel polymeric lubricant achieves values that could previously not be achieved with conventional non-water-miscible or water-mixed cooling lubricants.

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

Abstract

L'invention concerne une composition de lubrifiant monophase à base d'eau, peu à fortement visqueuse, ayant une teneur moyenne en eau > 80 %, ladite composition de lubrifiant étant exempte d'huiles minérales et contenant un lubrifiant polymère hydrosoluble à des températures de 10 à 90 °C.
EP09713978A 2008-02-28 2009-03-02 Composition de lubrifiant à base d'eau peu à fortement visqueuse Withdrawn EP2250244A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008011781A DE102008011781A1 (de) 2008-02-28 2008-02-28 Niedrigviskos bis hochviskos eingestellte wasserbasierte Schmierstoffzusammensetzung
PCT/EP2009/001462 WO2009106359A1 (fr) 2008-02-28 2009-03-02 Composition de lubrifiant à base d'eau peu à fortement visqueuse

Publications (1)

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EP2250244A1 true EP2250244A1 (fr) 2010-11-17

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EP09713978A Withdrawn EP2250244A1 (fr) 2008-02-28 2009-03-02 Composition de lubrifiant à base d'eau peu à fortement visqueuse

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Country Link
EP (1) EP2250244A1 (fr)
BR (1) BRPI0908001A2 (fr)
DE (2) DE102008011781A1 (fr)
WO (1) WO2009106359A1 (fr)

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DE102008011781A1 (de) 2008-02-28 2009-09-03 Carl Bechem Gmbh Niedrigviskos bis hochviskos eingestellte wasserbasierte Schmierstoffzusammensetzung
CN102071087A (zh) * 2009-11-20 2011-05-25 中信戴卡轮毂制造股份有限公司 铝合金轮毂专用乳化液
EP2530138A1 (fr) * 2011-06-03 2012-12-05 Carl Bechem Gmbh Lubrifiant doté d'une viscosité à résistance
CN102559355B (zh) * 2011-12-17 2013-11-13 天津泰伦特化学有限公司 自抑菌型通用乳化切削液及其制备方法
EP3042946A1 (fr) * 2015-01-07 2016-07-13 Bondmann Quimica Ltda Fluide de travail des métaux à lubrification bio, exempt d'huiles et d'émulsifiants
SG11201800960XA (en) 2015-08-31 2018-03-28 Fraunhofer Ges Forschung Lubricating mixture having glycerides
EP3412756A1 (fr) * 2017-06-06 2018-12-12 Rhenus Lub GmbH & Co. KG Lubrifiant réfrigérant pour matériaux composites
AT15731U1 (de) * 2017-07-05 2018-05-15 Johann Kellersperg Rafffluid
DE102017215713A1 (de) 2017-09-06 2019-03-07 Sms Group Gmbh Verfahren zum Betrieb einer walz- oder hüttentechnischen Anlage
EP3620502A1 (fr) * 2018-09-10 2020-03-11 Carl Bechem Gmbh Composition destiné à la production d'une composition lubrifiante
BR112021006166B1 (pt) * 2018-10-26 2024-01-30 Dow Global Technologies Llc Composição, e, uso da composição
CN111254003B (zh) * 2018-11-30 2022-03-11 洛阳阿特斯光伏科技有限公司 一种切割过程中使用的冷却液及其制备方法和用途
DE102019116392A1 (de) * 2019-06-17 2020-12-17 Profil Verbindungstechnik Gmbh & Co. Kg Verfahren zum Befestigen eines Befestigungselements an einem Werkstück
FR3124800B1 (fr) 2021-07-01 2024-07-05 Totalenergies Marketing Services Composition lubrifiante aqueuse pour le travail des métaux
FR3124802B1 (fr) 2021-07-01 2024-07-05 Totalenergies Marketing Services Composition lubrifiante aqueuse pour le travail des métaux
FR3124801B1 (fr) 2021-07-01 2024-07-05 Totalenergies Marketing Services Composition lubrifiante aqueuse pour le travail des métaux

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WO2005123888A1 (fr) * 2004-06-16 2005-12-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Liquide matriciel servant a produire une suspension d'enlevement de copeaux, utilise en tant que liquide lubrifiant ou liquide de traitement

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See also references of WO2009106359A1 *

Also Published As

Publication number Publication date
DE202009018507U1 (de) 2011-12-06
WO2009106359A1 (fr) 2009-09-03
BRPI0908001A2 (pt) 2019-09-24
DE102008011781A1 (de) 2009-09-03

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