EP3902896A1 - Mineralölfreies schmiermittel und verfahren zur herstellung eines mineralölfreien schmiermittels - Google Patents
Mineralölfreies schmiermittel und verfahren zur herstellung eines mineralölfreien schmiermittelsInfo
- Publication number
- EP3902896A1 EP3902896A1 EP19829548.7A EP19829548A EP3902896A1 EP 3902896 A1 EP3902896 A1 EP 3902896A1 EP 19829548 A EP19829548 A EP 19829548A EP 3902896 A1 EP3902896 A1 EP 3902896A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixture
- koh
- range
- ester
- lubricant
- 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.)
- Pending
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Classifications
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- 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
- C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
- C10M159/12—Reaction products
- C10M159/20—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products
- C10M159/24—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products containing sulfonic radicals
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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
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/34—Esters of monocarboxylic acids
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- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/38—Esters of polyhydroxy compounds
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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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/10—Metal oxides, hydroxides, carbonates or bicarbonates
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- 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
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium containing a sulfur-to-oxygen bond
- C10M135/10—Sulfonic acids or derivatives thereof
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- 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
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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- 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
- C10M2207/2805—Esters used as base material
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- 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
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
- C10M2207/2815—Esters of (cyclo)aliphatic monocarboxylic acids used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
- C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/30—Complex esters, i.e. compounds containing at leasst three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compounds: monohydroxyl compounds, polyhydroxy xompounds, monocarboxylic acids, polycarboxylic acids or hydroxy carboxylic acids
- C10M2207/301—Complex esters, i.e. compounds containing at leasst three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compounds: monohydroxyl compounds, polyhydroxy xompounds, monocarboxylic acids, polycarboxylic acids or hydroxy carboxylic acids used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/401—Fatty vegetable or animal oils used as base material
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- 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
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
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- 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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/40—Low content or no content compositions
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- 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
- C10N2030/52—Base number [TBN]
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- 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
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- 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
- C10N2030/66—Hydrolytic stability
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- 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
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- 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
- C10N2070/00—Specific manufacturing methods for lubricant compositions
Definitions
- the invention relates to a method for producing a lubricant, in which an overbased calcium sulfonate is first produced or made available, this is then converted from the fatherite form to the calcite form and finally a calcium sulfonate fat is produced by heating the mixture.
- the invention further relates to a lubricant produced by this method and a lubricant which comprises at least one ester composition, calcium carbonate and at least one overbased alkylbenzenesulfonate.
- Lubricants or lubricants are used to reduce friction and wear, to dampen vibrations, to seal and as corrosion protection for tools, machines, engines as well as motor vehicles, airplanes, ships and their parts.
- Lubricating greases usually consist of a lubricating oil, a thickener and auxiliary substances and additives. As a rule, greases contain approx. 80% lubricating oil, 5-10% thickener and 10-15% additives.
- mineral oils, natural or synthetic ester oils, polyalphaolefins or silicone oils can be used as lubricating oils.
- Synthetic ester oils include, for example, monocarboxylic acid esters, dicarboxylic acid esters, polyol esters and complex esters.
- calcium sulfonates are often used as thickeners, which, in addition to their thickening effect in the fat, also have a corrosion-inhibiting effect due to their basic properties.
- Calcium sulfonate fats currently available on the market are based exclusively on mineral oils or synthetic base oils such as polyalphaolefins (PAO). Mineral oils and PAO make up up to 80% of the fat.
- the core components for the production of a calcium sulfonate fat are the so-called overbased calcium sulfonates, which are prepared by reacting alkylbenzenesulfonic acids with calcium hydroxide and calcium oxide by introducing carbon dioxide into a mineral carrier oil.
- the commercial overbased calcium sulfonates usually contain more than 50% mineral oil. With these ingredients it is not possible to produce rapidly biodegradable calcium sulfonate fats. Since complete dispersion of calcium sulfonates in mineral oils or PAO is generally not completely successful, solubilizers such as water, organic solvents and acids must also be added, which then have to be removed again after production. Filtration is often necessary to remove undispersed solid particles.
- Biodegradability means the decomposition of a lubricant into inorganic substances such as water, salts, carbon dioxide and biomass with the help of microorganisms. According to the current state of the art, the complete biodegradability of lubricants is only determined by the OECD 301 test methods, which are based on the production of CO2. At the end of a “10-day test window” and after a test period of 28 days, the biodegradability is determined. If the lubricant has reached the required degree of degradation of at least 60% both at the end of the 10-day window and after 28 days of incubation, it is classified as “easily biodegradable” and can be awarded the EU Ecolabel (EEL), for example.
- EEL EU Ecolabel
- WO 2004/106474 A1 describes lubricants with improved biodegradability, which are based on a biodegradable oil, such as, for example, a polyol ester (C5-C8) or a polyalkylene glycol, a thickener based on calcium sulfonate and a naturally occurring phospholipid.
- a biodegradable oil such as, for example, a polyol ester (C5-C8) or a polyalkylene glycol
- a thickener based on calcium sulfonate and a naturally occurring phospholipid.
- a mixture of overbased magnesium and calcium sulfonates based on mineral oil is used as the thickener. Due to the not inconsiderable mineral oil content, it is completely biodegradable according to OECD-301 cannot be achieved with the lubricant described in WO 2004/106474 A1.
- a method for producing a lubricant which comprises the following steps:
- Calcite form which includes the following steps:
- the process according to the invention is characterized in particular by the fact that both the calcium sulfonate and the fat containing it contain only Ester-based, so that the end product contains no mineral oil and is therefore easily and completely biodegradable.
- the lubricant according to the invention achieves the required degree of degradation of at least 60% at the end of the so-called 10-day window and also after 28 days and thus fulfills the requirements of the OECD 301 test method.
- the replacement of mineral oil with organic or synthetic esters makes it possible to dispense with the addition of solubilizers, so that they no longer have to be removed at the end of the manufacturing process.
- the method according to the invention further ensures that the overbased calcium sulfonates are completely dispersed in the reaction mixture, so that filtration can also be dispensed with at the end of the process.
- the conditions for producing the lubricant are selected such that the ester composition is not decomposed under these conditions.
- the unit [mg KOH / g] refers to the basicity of potassium hydroxide (KOH).
- the basicity of the mixture is limited in step a) to a maximum TBN of 550 mg KOH / g and in step b) to a maximum TBN of 450 mg KOH / g.
- Checking and adjusting or limiting the basicity of the mixture advantageously means that the esters in the mixture do not saponify, in particular not under the influence of the high temperatures in steps b) and c).
- the moderate addition of water also contributes to this.
- Adjusting the mixture to a water content in the range from 2% by weight to 20% by weight in step b) significantly reduces the possibility of hydrolysis of the esters.
- the selection of the lowest possible temperatures, in particular in steps a) and b) also advantageously leads to the esters remaining stable in the mixture. In this way, a mineral oil-free, biodegradable calcium sulfonate fat can be produced in a particularly advantageous manner.
- the at least one alkyl group of the mono-, di- or tri-alkylbenzenesulfonic acid can be linear, branched and / or cyclic Act alkyl groups.
- at least one alkyl group of the mono-, di- or tri-alkylbenzenesulfonic acid is a (C10-C18) alkyl group.
- the ester composition can comprise, for example, a synthetic ester and / or a native (organic) ester.
- esters are mono- and dicarboxylic acid esters, polyol esters and complex esters, but also native ester oils such as. B. rapeseed oil in question.
- the ester composition can consist of an ester or a mixture of two or more different esters.
- the ester composition should preferably have a viscosity in the range from 2 mm 2 / s to 1,200 mm 2 / s, preferably 10 mm 2 / s to 500 mm 2 / s.
- the mixture in step a) has a base number (TBN) in the range from 150 to 550 mg KOH / g, preferably 210 to 450 mg KOH / g or 320 to 420 mg KOH / g, in particular 21 1 to 399 mg KOH / g, is set.
- TBN base number
- the base number of the mixture in step a) can also be based on a TBN in the range from 200 to 500 mg KOH / g or 300 to 500 mg KOH / g or 400 to 500 mg KOH / g or 150 to 450 mg KOH / g or 250 up to 450 mg KOH / g or 350 to 450 mg KOH / g or 200 to 400 mg KOH / g or 300 to 400 mg KOH / g.
- the mixture in step b) has a base number (TBN) in the range from 50 to 450 mg KOH / g, preferably 70 to 350 mg KOH / g or 100 to 250 mg KOH / g, in particular 80 to 220 mg KOH / g, is set.
- TBN base number
- the base number of the mixture in step b) can also be based on a TBN in the range from 100 to 450 mg KOH / g or 200 to 450 mg KOH / g or 300 to 450 mg KOH / g or 350 to 450 mg KOH / g or 50 up to 300 mg KOH / g or 100 to 300 mg KOH / g or 200 to 300 mg KOH / g or 150 to 250 mg KOH / g.
- the mixture is heated in step a) to a temperature in the range from 35 ° C. to 85 ° C. or 45 ° C. to 60 ° C., in particular 40 ° C. to 82 ° C.
- the mixture in step a) also to a temperature in the range from 45 ° C to 85 ° C or 55 ° C to 85 ° C or 65 ° C to 85 ° C or 75 ° C to 85 ° C or 40 ° C to 70 ° C or 50 ° C to 70 ° C or 60 ° C to 70 ° C or 50 ° C to 80 ° C or 55 ° C to 75 ° C.
- the mixture in step b) is heated to a temperature in the range from 87 ° C. to 102 ° C. or 85 ° C. to 100 ° C., in particular 88 ° C. to 99 ° C.
- the mixture in step b) can also be heated to a temperature in the range from 90 ° C. to 102 ° C. or 95 ° C. to 102 ° C. or 87 ° C. to 100 ° C. or 90 ° C. to 100 ° C.
- the mixture in step c) is heated to a temperature in the range from 100 ° C. to 180 ° C. or 110 ° C. to 170 ° C., in particular 125 ° C. to 160 ° C. .
- the mixture in step c) can also be at a temperature in the range from 120 ° C. to 180 ° C. or 130 ° C. to 180 ° C. or 140 ° C. to 180 ° C. or 150 ° C. to 180 ° C. or 160 ° C.
- the water content of the mixture in step b) is adjusted to a proportion in the range from 5% by weight to 18% by weight, in particular 7% by weight to 15% by weight becomes.
- the water content of the mixture in step b) can also be in a range from 5 to 15% by weight or 10 to 15% by weight or 7 to 18% by weight or 10 to 18% by weight or 9 up to 13% by weight.
- step b) calcium hydroxide and / or at least one mono-, di- or tri-alkylbenzenesulfonic acid, where at least one alkyl group is a (C3-C30) -alkyl group, and / or or at least one ester composition, wherein the ester composition comprises at least one ester.
- the addition of one or more of the substances mentioned can have a positive influence on the completeness of the conversion from the fatherite form to the calcite form.
- auxiliaries and / or additives can additionally be added to the reaction mixture.
- acetic acid can be added in order to adjust the desired basicity if necessary and to increase the dropping point by the calcium acetate formed.
- 12-hydroxystearic acid can be added in order to optimize the lubricant with regard to its hydrophobic properties, ie to increase its resistance to water.
- phenolic antioxidants e.g. Irganox® L 107, BASF
- aminic antioxidants e.g. Irganox® L 57, BASF
- dimercaptothiadiazole derivatives ADDITIN® RC 8213 ( Lanxess)
- all common additives which improve the consistency and properties of the lubricant according to the invention can be added.
- the invention further relates to a lubricant which was produced by means of the inventive method described above.
- the lubricant according to the invention does not contain any mineral oil and is therefore easily biodegradable according to the requirements of the OECD 301 test method.
- unlike mineral oil-containing greases it is still flowable even at very low temperatures (-10 ° C to -20 ° C) and also has a higher pressure absorption capacity.
- a mineral oil-free lubricant which comprises at least one ester composition which comprises at least one ester, calcium carbonate and at least one overbased mono-, di- or tri-alkylbenzenesulfonate, at least one alkyl group of the mono-, di- or tri-alkylbenzenesulfonate is a (C3-C30) alkyl group.
- the lubricant according to the invention is free from mineral oil and contains only esters as the oil component, so that it is readily biodegradable in accordance with the requirements of the OECD 301 test method.
- the lubricant according to the invention is still flowable even at very low temperatures (-10 ° C. to -20 ° C.) and also has a very high viscosity high pressure absorption capacity.
- the at least one alkyl group of the mono-, di- or tri-alkylbenzenesulfonate can be linear, branched and / or cyclic alkyl groups. In an advantageous embodiment of the invention, it is provided that at least one alkyl group of the mono-, di- or tri-alkylbenzenesulfonate is a (C10-C18) alkyl group.
- the ester composition can comprise, for example, a synthetic ester and / or a native (organic) ester.
- esters are mono- and dicarboxylic acid esters, polyol esters and complex esters, but also native ester oils such as. B. rapeseed oil in question.
- the ester composition can consist of an ester or a mixture of two or more different esters.
- the ester composition should preferably have a viscosity in the range from 2 mm 2 / s to 1,200 mm 2 / s, preferably 10 mm 2 / s to 500 mm 2 / s.
- the mineral oil-free lubricant 30% by weight to 80% by weight of the ester composition, 5% by weight to 20% by weight of calcium carbonate and 5% by weight to 25% by weight.
- -% of the overbased mono-, di- or tri-alkylbenzenesulfonate comprises.
- the mineral oil-free lubricant 50% by weight to 65% by weight of the ester composition, 10% by weight to 15% by weight of calcium carbonate and 12% by weight to 20% by weight .-% of the overbased mono-, di- or tri-alkylbenzenesulfonate comprises.
- the lubricant according to the invention can additionally comprise at least one additive.
- phenolic antioxidants e.g. Irganox® L 107, BASF
- amine antioxidants e.g. Irganox® L 57, BASF
- dimercaptothiadiazole derivatives ADDITIN® RC 8213 (Lanxess)
- Table 1 An exemplary composition of an advantageous embodiment of the lubricant according to the invention is given in Table 1.
- FIG. 1 shows the formation of overbased calcium sulfonate, calcium carbonate micelles first of all being formed from calcium hydroxide, calcium oxide and CO2, to which alkylbenzenesulfonates with their polar groups then attach.
- the non-polar (lipophilic) alkyl residues are directed outwards and thus surround the CaCC micelles, so that they can be completely dispersed in a base oil (ester composition).
- FIG. 2 shows the structure of overbased calcium sulfonate after adding Ca (OH) 2 .
- Figure 3 shows the structure of a mixture of overbased calcium sulfonate, Ca (OH) 2, benzoesulfonic acid (di- or mono-alkyl, C10 - C18) and acetic acid.
- the mixture now has a TBN of 399 mg KOH / g.
- 300 g complex esters fatty acids, C18-unsaturated, dimerized, polymer with 2-ethylhexanol and neopentylglycol
- 220 g benzo sulfonic acid C10-14-alkyl 21 g acetic acid
- 72 g Ca (OH) 2 180 g water
- the batch is heated to 92 ° C.
- the calcium carbonate has been converted from the fatherite to the calcite form
- the batch is dewatered at 110 ° C.
- the TBN is now 220 mg KOFI / g.
- the batch is then heated to 160 ° C. and held at this temperature for one hour.
- the fat has a consistency (according to ASTM D217) of 292 mm / 10 after 60 double strokes. Further technical data can be found in table 2.
- neopentyl glycol diisostearate saturated ester, 243 g of benzoesulfonic acid C10-14-alkyl, 21 g of acetic acid, 72 g of Ca (OFI) 2 and 65 g of water are added to the batch.
- the batch is heated to 92 ° C.
- the TBN is now 188 mg KOFI / g, then the mixture is heated to 160 ° C. and held at this temperature for one hour
- the fat has a consistency (according to ASTM D217) of 272 mm / 10 after 60 double strokes.Further technical data can be found in Table 2.
- the batch is heated to 92 ° C. After the calcium carbonate has been converted from the fatherite to the calcite form, the batch is dewatered at 110 ° C. The TBN is now 180 mg KOH / g. The batch is then heated to 150 ° C. and held at this temperature for half an hour. After cooling, the fat has a consistency (according to ASTM D217) of 299 mm / 10 after 60 double strokes. Further technical data can be found in table 2.
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- Oil, Petroleum & Natural Gas (AREA)
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- Lubricants (AREA)
Abstract
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DE102018133586.5A DE102018133586B4 (de) | 2018-12-24 | 2018-12-24 | Mineralölfreies Schmierfett und Verfahren zur Herstellung eines mineralölfreien Schmierfetts |
PCT/EP2019/086264 WO2020136075A1 (de) | 2018-12-24 | 2019-12-19 | Mineralölfreies schmiermittel und verfahren zur herstellung eines mineralölfreien schmiermittels |
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EP (1) | EP3902896A1 (de) |
JP (2) | JP2022515776A (de) |
KR (1) | KR20210107054A (de) |
CN (1) | CN113366096B (de) |
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GB1399092A (en) | 1971-05-27 | 1975-06-25 | Cooper & Co Ltd Edwin | Lubricant additives |
AU506794B2 (en) * | 1975-03-17 | 1980-01-24 | Snamprogetti S.P.A. | Lubricants |
US4981602A (en) * | 1988-06-13 | 1991-01-01 | The Lubrizol Corporation | Lubricating oil compositions and concentrates |
USH1536H (en) * | 1995-04-11 | 1996-06-04 | The Lubrizol Corporation | Overbased materials in ester media |
US6015778A (en) * | 1998-03-27 | 2000-01-18 | The Lubrizol Corporation | Process for making overbased calcium sulfonate detergents using calcium oxide and a less than stoichiometric amount of water |
US7517837B2 (en) * | 2003-05-22 | 2009-04-14 | Anderol, Inc. | Biodegradable lubricants |
MY165650A (en) * | 2011-10-31 | 2018-04-18 | Nch Corp | Calcium carbonate based calcium sulfonate grease compositions and method of manufacture |
JP6051097B2 (ja) * | 2013-04-26 | 2016-12-27 | 出光興産株式会社 | グリースの製造方法 |
CN104293449B (zh) * | 2013-07-17 | 2016-08-10 | 中国石油化工股份有限公司 | 一种复合环烷酸钙基润滑脂及其制备方法 |
CN105037222A (zh) * | 2015-06-25 | 2015-11-11 | 锦州惠发天合化学有限公司 | 高碱值结晶型磺酸钙的制备方法 |
CN105503670A (zh) * | 2016-01-12 | 2016-04-20 | 安徽金桐精细化学有限公司 | 一种高碱值的合成烷基苯磺酸钙纳米清净剂及其制备方法 |
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BR112021012304A2 (pt) | 2021-09-08 |
DE102018133586B4 (de) | 2022-03-03 |
ZA202105074B (en) | 2022-08-31 |
DE102018133586A1 (de) | 2020-06-25 |
US20220056365A1 (en) | 2022-02-24 |
CA3123499A1 (en) | 2020-07-02 |
AU2019412475A1 (en) | 2021-07-08 |
CN113366096A (zh) | 2021-09-07 |
KR20210107054A (ko) | 2021-08-31 |
WO2020136075A1 (de) | 2020-07-02 |
CN113366096B (zh) | 2023-03-17 |
JP2024127889A (ja) | 2024-09-20 |
JP2022515776A (ja) | 2022-02-22 |
SG11202106821YA (en) | 2021-07-29 |
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