EP0186188B1 - Lubricant for water fittings such as water taps and the like - Google Patents
Lubricant for water fittings such as water taps and the like Download PDFInfo
- Publication number
- EP0186188B1 EP0186188B1 EP85116505A EP85116505A EP0186188B1 EP 0186188 B1 EP0186188 B1 EP 0186188B1 EP 85116505 A EP85116505 A EP 85116505A EP 85116505 A EP85116505 A EP 85116505A EP 0186188 B1 EP0186188 B1 EP 0186188B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- acid
- lubricant
- additive component
- water
- lubricant according
- 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.)
- Expired
Links
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
- 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
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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
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/141—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings monocarboxylic
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
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- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/101—Condensation polymers of aldehydes or ketones and phenols, e.g. Also polyoxyalkylene ether derivatives thereof
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- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/06—Perfluorinated compounds
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- C10M2213/02—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
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- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
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- 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
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- 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
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- C10M2217/022—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 amino group
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Definitions
- the moving parts from the water supply sector namely of so-called water fittings, such as taps, water pumps, water level monitors, water slides and other water shut-off devices or termostat valves in the household and in the industry, which are made of metal, such as brass, or ceramic, such as Alumina ceramics, must be treated with special lubricants to maintain their functionality, namely mobility and tightness of their sliding surfaces.
- Various lubricants are already available for this purpose. They consist essentially of a natural or synthetic highly viscous lubricating oil or grease, which usually contains a thickener to further increase its consistency.
- Such lubricants are, for example, the valve and damping greases from Klüber Lubrication Kunststoff KG, Kunststoff, marketed under the name UNISILIKON L silicone greases. These consist of a highly viscous dimethylsiloxane as a lubricating oil and a finely divided polytetrafluoroethylene as a thickener.
- the UNISILIKON L 641 contains 80 percent by weight of a dimethylpolysiloxane with a viscosity of 60,000 mm 2 sec- 1 and 20 percent by weight of powdered polytetrafluoroethylene with a melting point of about 330 ° C, a melt viscosity at 380 ° C of about 10 Pa-sec, a density of about 2.2 and an average particle size of about 1 to 6 Il m.
- these UNISILIKON L silicone greases reference is made, for example, to pages 6 and 7 of the Klüber prospectus with the identifier 02.11.2 d.
- DOW CORNING FS-3452 sealing grease which contains a highly viscous fluorosilicone oil as a lubricating oil and a polytetrafluoroethylene of the type already described as a thickening agent and is described, for example, in brochure 71-114-03 from Dow Corning GmbH, Kunststoff .
- lubricants for water fittings also based on highly viscous dimethylpolysiloxanes, which are thickened with highly disperse silicon dioxide, such as MOLYKOTE 111 COMPOUND and DOW CORNING VALVE SEAL, which are described, for example, in the leaflets 22-063B-03 and 22-208-03 from Dow Corning GmbH, Kunststoff.
- Comparable lubricants for water fittings are also based on natural, highly viscous lubricating oils, which are also mixed with conventional organic or inorganic thickeners to increase their consistency.
- Such lubricants are, for example, the valve greases and tap greases MOLYKOTE 1011 and 1001, which contain a paraffin oil (Paraffinum subliquidum 210 - extra heavy) and bentonite as a thickening agent as lubricating oil and are described, for example, in leaflet 71-119-03 from Dow Corning GmbH, Kunststoff .
- the object of the invention is therefore to provide a new lubricant for water fittings, such as taps and the like, which maintains its effectiveness compared to the known lubricants much longer, since the formation of deposits, in particular in the form of lime and rust, on the contact surfaces of the lubricated Movable parts of such fittings is inhibited to a high degree, so that such fittings have a much longer functionality.
- the lubricant for water fittings resulting from the patent claims which differs from the known lubricants of this type essentially in that it contains as additive (a) at least one complexing agent and (b) optionally at least one hydrophobizing agent.
- the lubricant according to the invention is distinguished from the known lubricants for water fittings with comparable lubrication performance, above all in that its lubricity is retained for a considerably longer time, since the disturbing formation of deposits, in particular in the form of lime and rust, is blocked for a long time with this lubricant.
- the fittings treated with this therefore remain functional for a relatively long time.
- the lubricant according to the invention is, of course, preferably designed with regard to the various constituents contained in it in such a way that it corresponds to the respective food law regulations, since it is intended to be used primarily for water fittings, such as taps and the like. For its composition, therefore, all those components that do not meet this condition are normally excluded.
- the predominant constituent of the lubricant according to the invention is, of course, a natural or synthetic, highly viscous lubricating oil or grease, which is already used in the known lubricants of this type, and which is in each case present in such an amount that, together with the other constituents, a total amount of 100% results. If, in addition to the lubricating oil or grease, the lubricant according to the invention only contains, for example, only the complexing agent (a), the proportion of lubricating oil or grease can for example, even make up 97 to 99.7 percent by weight.
- the proportion of lubricating oil or grease decreases accordingly, so that it can be present in an amount of, for example, 85 to 97.7 percent by weight. If a thickener is also present in the lubricant according to the invention, which applies to an increased extent particularly when a lubricating oil is used, the above-mentioned amounts of lubricating oil or grease naturally decrease in accordance with the content of thickening agent.
- suitable lubricating oils or greases are, for example, highly viscous mineral oils, synthetic hydrocarbon oils, aliphatic or aromatic polyethers, fluorinated polyethers, silicones or flourished silicones.
- the viscosity of such lubricating oils or greases is generally between about 40,000 and 150,000 mm 2. sec- 1 at 25 ° C, with dimethylpolysiloxanes with viscosities in this range being particularly preferred.
- lubricating oils or lubricating greases based on mineral oils can also be used, namely, for example, white oils with a viscosity in this range, such as medium-heavy, heavy and extra-heavy paraffin oils.
- the lubricant according to the invention either contains no thickener at all or a certain amount of a conventional organic or inorganic thickener.
- the amount of thickener present can therefore range up to about 40 percent by weight, and is preferably about 5 to 30 percent by weight, especially 10 to 20 percent by weight, of the total lubricant.
- thickener to be used is known to the person skilled in the art, and this includes, for example, metal soaps, metal complex soaps, polyureas, terephthalamates, plastic powders of all kinds, such as polyamide powder, polytetrafluoroethylene powder or polyfluoroethylene propylene powder as organic thickeners or highly disperse silicon dioxide, bentonite, inorganic thickener and montmorillonite, as montmorillonite .
- the component which is primarily responsible for the particular mode of action of the lubricant according to the invention is additive (a), which is at least a complexing agent.
- additive (a) which is at least a complexing agent.
- This component ensures that the ions that otherwise lead to deposits do not result in any precipitation, since they are bound to the complex.
- a complexing agent is preferably used which is relatively sparingly water-soluble, so that it is consumed only slowly over the course of time and has a lasting effect, in particular using a complexing agent which is primarily capable of binding calcium ions and iron ions. Mixtures of different types of complexing agents can of course also be used.
- the amount of complexing agent in the lubricant of the present invention is generally 0.3 to 3 percent by weight, and is preferably 0.5 to 1.5 percent by weight.
- the amount of the hydrophobicizing agent used as additive (b) can accordingly generally be 0 to 15 percent by weight, and preferably 3 to 10 percent by weight, again based on the total weight of the individual components present in the lubricant according to the invention.
- silicone-based water repellents must also be used primarily, and examples of such water repellents are methyl silicone resins, methylphenyl silicone resins, silicone alkyd resins, condensation products from polysiloxanes and polyesters or polyepoxides, polysiloxane resins or vinyl groups or silane groups with allyl groups .
- the lubricating oils or lubricating greases present in the lubricant according to the invention are not silicone-based, so that they represent corresponding natural or synthetic lubricating oils or lubricating greases, such as mineral oils, synthetic hydrocarbons, aliphatic or aromatic polyether or fluorinated polyethers, then the additive serving as a water repellent is (b) preferably a tall oil resin or an alkyd resin.
- the lubricant according to the invention is particularly suitable as Lubricant for water fittings, such as taps and the like, and it is preferably used for corresponding fittings made of ceramic, such as, for example, made of aluminum oxide ceramic. In addition to the desired high lubrication and tightness, it also gives the fittings treated with them a particularly long service life without premature loss of their functionality.
- a homogenizer 79 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C. of 50,000 mm 2 sec - 1 , 20 percent by weight of a polytetrafluoroethylene (HOSTAFLON TF 9202) and 1% of nitrilotriacetic acid are mixed together.
- the lubricant obtained in this way looks milky white and is particularly suitable for the lubrication and sealing of water fittings, in particular ceramic fittings.
- a homogenizer 69 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C. of 100,000 mm 2 .sec -1 and 20 percent by weight of polytetrafluoroethylene of the type specified above are mixed together, followed by further mixing 10 percent by weight of a dimethyltrimethylpolysiloxane with a viscosity at 25 ° C from 600 to 1000 mm 2. sec- 1 and 1 weight percent trans-1,2-cyclohexylene-dinitrilotetraacetic acid. A lubricant with a milky white appearance is again obtained.
- a homogenizer 60 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C. of 60,000 mm 2 sec- 1 and 20 percent by weight of a polyfluoroethylene propylene (TL 120) are mixed with one another and then, with further mixing, 10 percent by weight of a methylphenylpolysiloxane with a viscosity are added 25 ° C of 5000 mm 2 ⁇ sec -1 and 10 weight percent vinylbenzyltrimethylammonium polymer, which in turn leads to a milky white lubricant.
- TL 120 polyfluoroethylene propylene
- the milky white lubricant obtained in this way shows a resting penetration mm / 10 (50 g cone) from 330 to 350, a water resistance according to DIN 51807 at 5 h / 90 ° C from 0 and a dynamic toughness at 200 sec- 1 of 33,000 mm 2 ⁇ sec -1 (20 ° C), 29,000 mm 2 ⁇ sec -1 (40 ° C) and 25,000 mm 2 ⁇ sec -1 (60 ° C).
- the theoretical temperature range of this lubricant ranges from -40 ° C to + 200 ° C.
- a homogenizer 79 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C. of 60,000 mm 2 sec- 1 and 20 percent by weight of polytetrafluoroethylene are mixed with one another, and the mixture obtained is then mixed with 1 percent by weight of ethylenediaminetetraacetic acid, resulting in a lubricant milky white appearance.
- a white oil (Paraffinum subliquidum 210) are mixed with 10% by weight of aluminum stearate benzoate complex in a homogenizer, and 5% by weight of a tall oil resin (40%) and 2% by weight of nitrilotriacetic acid are then added with further mixing. A somewhat yellowish-looking lubricant is obtained.
- a homogenizer 80 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C of 60,000 mm 2 sec- 1 is mixed with 20 percent by weight of a polytetrafluoroethylene, resulting in a conventional valve and damping grease, which is sold under the trade name UNISILIKON L 641 known silicone grease from Klüber Lubrication Ober KG.
- the water fitting from Rokal with the designation Karibik 2000 (article no. 017005) is used, in which two perforated ceramic discs control the water flow and the mixing temperature.
- This faucet is a so-called single-lever washbasin with a smooth body.
- the test bench works with 19 radial and 21 axial cycles per minute.
- Example 4 content of lubricating oil + thickener + complexing agent
- Example 5 content of lubricating oil + thickening agent + complexing agent + hydrophobizing agent
- Example 7 content of lubricating oil + thickening agent
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Description
Die beweglichen Teile aus dem Wasserversorgungssektor, nämlich von sogenannten Wasserarmaturen, wie sie beispielsweise Wasserhähne, Wasserpumpen, Wasserniveauwächter, Wasserschieber und sonstige Wasserabsperrvorrichtungen oder auch Termostatventile im Haushalt und in der Industrie darstellen, die beispielsweise aus Metall, wie Messing, oder auch aus Keramik, wie Aluminiumoxidkeramik, hergestellt sind, müssen zur Aufrechterhaltung ihrer Funktionsfähigkeit, nämlich einer Beweglichkeit und zugleich Dichtigkeit ihrer Gleitflächen, mit Spezialschmierstoffen behandelt werden. Für diesen zweck gibt es bereits die verschiedensten Schmierstoffe. Sie bestehen im wesentlichen aus einem natürlichen oder synthetischen hochviskosen Schmieröl oder auch Schmierfett, das zur weiteren Erhöhung seiner Konsistenz gewöhnlich ein Verdickungsmittel enthält. Solche Schmierstoffe sind beispielsweise die unter der Bezeichnung UNISILIKON L Silikonfette vertriebenen Armaturen- und Dämpfungsfette der Firma Klüber Lubrication München KG, München. Diese bestehen aus einem hochviskosen Dimethylsiloxan als Schmieröl und einem feinteiligen Polytetrafluorethylen als Verdickungsmittel. Das UNISILIKON L 641 enthält 80 Gewichtsprozent eines Dimethylpolysiloxans mit einer Viskosität von 60 000 mm2 sec-1 und 20 Gewichtsprozent pulverförmiges Polytetrafluorethylen mit einem Schmelzpunkt von etwa 330°C, einer Schmelzviskosität bei 380°C von etwa 10 Pa - sec, einer Dichte von etwa 2,2 und einer mittleren Teilchengröße von etwa 1 bis 6 Ilm. Bezüglich dieser UNISILIKON L Silikonfette wird beispielsweise hingewiesen auf die Seiten 6 und 7 des Prospekts der Firma Klüber mit der Kennung 02.11.2 d. Ein weiterer Schmierstoff dieser Art ist das DOW CORNING FS-3452 Dichtungsfett, das als Schmieröl ein hochviskoses Fluorsiliconöl und als Verdickungsmittel ein Polytetrafluorethylen der oben bereits beschriebenen Art enthält und beispielsweise im Prospekt 71-114-03 der Firma Dow Corning GmbH, München, beschrieben wird. Es gibt auch bereits Schmierstoffe für Wasserarmaturen ebenfalls auf Basis hochviskoser Dimethylpolysiloxane, die mit hochdispersem Siliciumdioxid verdickt sind, wie beispielsweise MOLYKOTE 111 COMPOUND und DOW CORNING VALVE SEAL, die beispielsweise in den Merkblättern 22-063B-03 und 22-208-03 der Firma Dow Corning G.m.b.H., München, beschrieben werden. Vergleichbare Schmierstoffe für Wasserarmaturen gibt es auch auf Basis natürlicher hochviskoser Schmieröle, die zur Erhöhung ihrer Konsistenz ebenfalls mit üblichen organischen oder anorganischen Verdickungsmitteln versetzt sind. Solche Schmierstoffe sind beispielsweise die Armaturenfette und Hahnfette MOLYKOTE 1011 und 1001, die als Schmieröl ein Paraffinöl (Paraffinum subliquidum 210 - extra schwer) und Bentonit als Verdickungsmittel enthalten und beispielsweise im Merkblatt 71-119-03 der Firma Dow Corning GmbH, München, beschrieben werden.The moving parts from the water supply sector, namely of so-called water fittings, such as taps, water pumps, water level monitors, water slides and other water shut-off devices or termostat valves in the household and in the industry, which are made of metal, such as brass, or ceramic, such as Alumina ceramics, must be treated with special lubricants to maintain their functionality, namely mobility and tightness of their sliding surfaces. Various lubricants are already available for this purpose. They consist essentially of a natural or synthetic highly viscous lubricating oil or grease, which usually contains a thickener to further increase its consistency. Such lubricants are, for example, the valve and damping greases from Klüber Lubrication München KG, Munich, marketed under the name UNISILIKON L silicone greases. These consist of a highly viscous dimethylsiloxane as a lubricating oil and a finely divided polytetrafluoroethylene as a thickener. The UNISILIKON L 641 contains 80 percent by weight of a dimethylpolysiloxane with a viscosity of 60,000 mm 2 sec- 1 and 20 percent by weight of powdered polytetrafluoroethylene with a melting point of about 330 ° C, a melt viscosity at 380 ° C of about 10 Pa-sec, a density of about 2.2 and an average particle size of about 1 to 6 Il m. Regarding these UNISILIKON L silicone greases, reference is made, for example, to pages 6 and 7 of the Klüber prospectus with the identifier 02.11.2 d. Another lubricant of this type is the DOW CORNING FS-3452 sealing grease, which contains a highly viscous fluorosilicone oil as a lubricating oil and a polytetrafluoroethylene of the type already described as a thickening agent and is described, for example, in brochure 71-114-03 from Dow Corning GmbH, Munich . There are also lubricants for water fittings, also based on highly viscous dimethylpolysiloxanes, which are thickened with highly disperse silicon dioxide, such as MOLYKOTE 111 COMPOUND and DOW CORNING VALVE SEAL, which are described, for example, in the leaflets 22-063B-03 and 22-208-03 from Dow Corning GmbH, Munich. Comparable lubricants for water fittings are also based on natural, highly viscous lubricating oils, which are also mixed with conventional organic or inorganic thickeners to increase their consistency. Such lubricants are, for example, the valve greases and tap greases MOLYKOTE 1011 and 1001, which contain a paraffin oil (Paraffinum subliquidum 210 - extra heavy) and bentonite as a thickening agent as lubricating oil and are described, for example, in leaflet 71-119-03 from Dow Corning GmbH, Munich .
Die bekannten Schmierstoffe für Wasserarmaturen, wie Wasserhähne und dergleichen, haben leider den Nachteil, daß ihre Wirksamkeit mit zunehmender Zeitdauer immer stärker beeinträchtigt wird, da sich an den zu schmierenden Oberflächen Ablagerungen der verschiedensten Art bilden, und zwar insbesondere Ablagerungen durch Kalk und Rost. Hierdurch verkürzt sich die Funktionsfähigkeit der jeweiligen Armaturen ganz wesentlich, und es kommt durch Undichtigkeit und Verschleiß zu einem vorzeitigen Ausfall.The known lubricants for water fittings, such as taps and the like, unfortunately have the disadvantage that their effectiveness is increasingly impaired with increasing time, since deposits of all kinds form on the surfaces to be lubricated, in particular deposits by lime and rust. This significantly shortens the functionality of the respective fittings, and there is a premature failure due to leakage and wear.
Aufgabe der Erfindung ist daher die Schaffung eines neuen Schmierstoffs für Wasserarmaturen, wie Wasserhähne und dergleichen, der seine Wirksamkeit im Vergleich zu den bekannten Schmierstoffen wesentlich länger beibehält, da die Bildung von Ablagerungen, insbesondere in Form von Kalk und Rost, an den Berührungsflächen der geschmierten beweglichen Teile solcher Armaturen in einem hohen Ausmaß gehemmt ist, so daß solche Armaturen über eine wesentlich längere Funktionsfähigkeit verfügen.The object of the invention is therefore to provide a new lubricant for water fittings, such as taps and the like, which maintains its effectiveness compared to the known lubricants much longer, since the formation of deposits, in particular in the form of lime and rust, on the contact surfaces of the lubricated Movable parts of such fittings is inhibited to a high degree, so that such fittings have a much longer functionality.
Diese Aufgabe wird erfindungsgemäß durch den aus den Patentansprüchen hervorgehenden Schmierstoff für Wasserarmaturen gelöst, der sich von den bekannten Schmierstoffen dieser Art im wesentlichen dadurch unterscheidet, daß er als Zusatzstoff (a) wenigstens einen Komplexbildner und (b) gegebenenfalls wenigstens ein Hydrophobiermittel enthält.According to the invention, this object is achieved by the lubricant for water fittings resulting from the patent claims, which differs from the known lubricants of this type essentially in that it contains as additive (a) at least one complexing agent and (b) optionally at least one hydrophobizing agent.
Der erfindungsgemäße Schmierstoff zeichnet sich gegenüber den bekannten Schmierstoffen für Wasserarmaturen bei vergleichbarer Schmierleistung vor allem dadurch aus, daß seine Schmierfähigkeit wesentlich länger erhalten bleibt, da die störende Bildung von Ablagerungen, insbesondere in Form von Kalk und Rost, bei diesem Schmierstoff langzeitig blockiert ist. Die hiermit behandelten Armaturen bleiben daher verhältnismäßig lange funktionsfähig.The lubricant according to the invention is distinguished from the known lubricants for water fittings with comparable lubrication performance, above all in that its lubricity is retained for a considerably longer time, since the disturbing formation of deposits, in particular in the form of lime and rust, is blocked for a long time with this lubricant. The fittings treated with this therefore remain functional for a relatively long time.
Der erfindungsgemäße Schmierstoff ist bezüglich der in ihm enthaltenen verschiedenen Bestandteile vorzugsweise selbstverständlich so konzipiert, daß er den jeweiligen lebensmittelrechtlichen Vorschriften entspricht, da er ja in erster Linie für Wasserarmaturen, wie Wasserhähne und dergleichen, verwendet werden soll. Für seine Zusammensetzung scheiden daher normalerweise all die Bestandteile aus, die dieser Bedingung nicht entsprechen.The lubricant according to the invention is, of course, preferably designed with regard to the various constituents contained in it in such a way that it corresponds to the respective food law regulations, since it is intended to be used primarily for water fittings, such as taps and the like. For its composition, therefore, all those components that do not meet this condition are normally excluded.
Der überwiegende Bestandteil des erfindungsgemäßen Schmierstoffs ist natürlich ein bereits bei den bekannten Schmierstoffen dieser Art verwendetes natürliches oder synthetisches hochviskoses Schmieröl oder Schmierfett, das jeweils in einer solchen Menge vorhanden ist, daß sich zusammen mit den anderen Bestandteilen eine Gesamtmenge von 100 % ergibt. Enthält der erfindungsgemäße Schmierstoff neben dem Schmieröl oder Schmierfett beispielsweise nur noch den Komplexbildner (a), dann kann der Anteil an Schmieröl oder Schmierfett beispielsweise sogar 97 bis 99,7 Gewichtsprozent ausmachen. Enthält er zusätzlich auch ein Hydrophobiermittel, dann erniedrigt sich der Anteil an Schmieröl oder Schmierfett entsprechend, so daß dieses in einer Menge von beispielsweise 85 bis 97,7 Gewichtsprozent vorhanden sein kann. Ist im erfindungsgemäßen Schmierstoff auch noch ein Verdickungsmittel vorhanden, was in vermehrtem Ausmaß insbesondere dann gilt, wenn ein Schmieröl verwendet wird, dann erniedrigen sich die oben angegebenen Mengen an Schmieröl oder Schmierfett natürlich entsprechend dem Gehalt an Verdickungsmittel.The predominant constituent of the lubricant according to the invention is, of course, a natural or synthetic, highly viscous lubricating oil or grease, which is already used in the known lubricants of this type, and which is in each case present in such an amount that, together with the other constituents, a total amount of 100% results. If, in addition to the lubricating oil or grease, the lubricant according to the invention only contains, for example, only the complexing agent (a), the proportion of lubricating oil or grease can for example, even make up 97 to 99.7 percent by weight. If it also contains a hydrophobizing agent, the proportion of lubricating oil or grease decreases accordingly, so that it can be present in an amount of, for example, 85 to 97.7 percent by weight. If a thickener is also present in the lubricant according to the invention, which applies to an increased extent particularly when a lubricating oil is used, the above-mentioned amounts of lubricating oil or grease naturally decrease in accordance with the content of thickening agent.
Als Schmieröle oder Schmierfette eignen sich erfindungsgemäß beispielsweise hochviskose Mineralöle, synthetische Kohlenwasserstofföle, aliphatische oder aromatische Polyether, fluorierte Polyether, Silikone oder florierte Silikone. Die Viskosität solcher Schmieröle oder Schmierfette liegt im allgemeinen zwischen etwa 40 000 und 150 000 mm2 . sec-1 bei 25°C, wobei Dimethylpolysiloxane mit Viskositäten in diesem Bereich besonders bevorzugt sind. Statt dessen können jedoch auch Schmieröle oder Schmierfette auf Mineralölbasis verwendet werden, nämlich beispielsweise Weißöle mit einer in diesem Bereich liegenden Viskosität, wie mittelschwere, schwere und extraschwere Paraffinöle.According to the invention, suitable lubricating oils or greases are, for example, highly viscous mineral oils, synthetic hydrocarbon oils, aliphatic or aromatic polyethers, fluorinated polyethers, silicones or flourished silicones. The viscosity of such lubricating oils or greases is generally between about 40,000 and 150,000 mm 2. sec- 1 at 25 ° C, with dimethylpolysiloxanes with viscosities in this range being particularly preferred. Instead, however, lubricating oils or lubricating greases based on mineral oils can also be used, namely, for example, white oils with a viscosity in this range, such as medium-heavy, heavy and extra-heavy paraffin oils.
In Abhängigkeit von der Viskosität des im erfindungsgemäßen Schmierstoffs vorhandenen Schmieröls oder Schmierfetts oder sonstiger dabei erwünschter Eigenschaften, wie einer erhöhten Haftung und Auswaschbeständigkeit, enthält der erfindungsgemäße Schmierstoff entweder überhaupt kein Verdickungsmittel oder eine gewisse Menge an einem üblichen organischen oder anorganischen Verdickungsmittel. Die Menge an vorhandenem Verdickungsmittel kann daher bis zu etwa 40 Gewichtsprozent reichen, und sie macht vorzugsweise etwa 5 bis 30 Gewichtsprozent, insbesondere 10 bis 20 Gewichtsprozent, des gesamten Schmierstoffs aus. Die Art der einzusetzenden Verdickungsmittel ist dem Fachmann bekannt, und hierzu gehören beispielsweise Metallseifen, Metallkomplexseifen, Polyharnstoffe, Terephthalamate, Kunststoffpulver der verschiedensten Art, wie Polyamidpulver, Polytetrafluorethylenpulver oder Polyfluorethylenpropylenpulver als organische Verdickungsmittel oder hochdisperse Siliciumdioxide, Bentonite, Montmorillonite, Hectorite und Metalloxide als anorganische Verdickungsmittel.Depending on the viscosity of the lubricating oil or grease present in the lubricant according to the invention or other properties desired in the process, such as increased adhesion and washout resistance, the lubricant according to the invention either contains no thickener at all or a certain amount of a conventional organic or inorganic thickener. The amount of thickener present can therefore range up to about 40 percent by weight, and is preferably about 5 to 30 percent by weight, especially 10 to 20 percent by weight, of the total lubricant. The type of thickener to be used is known to the person skilled in the art, and this includes, for example, metal soaps, metal complex soaps, polyureas, terephthalamates, plastic powders of all kinds, such as polyamide powder, polytetrafluoroethylene powder or polyfluoroethylene propylene powder as organic thickeners or highly disperse silicon dioxide, bentonite, inorganic thickener and montmorillonite, as montmorillonite .
Die für die besondere Wirkungsweise des erfindungsgemäßen Schmierstoffs in erster Linie verantwortliche Komponente ist der Zusatzstoff (a), bei dem es sich wenigstens um einen Komplexbildner handelt. Diese Komponente sorgt dafür, daß die sonst zu Ablagerungen führenden Ionen keine Ausfällungen ergeben, da sie komplexgebunden werden. Vorzugsweise wird erfindungsgemäß ein Komplexbildner verwendet, der verhältnismäßig schwer wasserlöslich ist, so daß er im Laufe der Zeit nur langsam verbraucht wird und eine anhaltende Wirkung ergibt, wobei insbesondere ein Komplexbildner eingesetzt wird, der in erster Linie zur Bindung von Calciumionen und Eisenionen befähigt ist. Es können selbstverständlich auch Mischungen aus verschiedenartigen Komplexbildnern angewandt werden.The component which is primarily responsible for the particular mode of action of the lubricant according to the invention is additive (a), which is at least a complexing agent. This component ensures that the ions that otherwise lead to deposits do not result in any precipitation, since they are bound to the complex. According to the invention, a complexing agent is preferably used which is relatively sparingly water-soluble, so that it is consumed only slowly over the course of time and has a lasting effect, in particular using a complexing agent which is primarily capable of binding calcium ions and iron ions. Mixtures of different types of complexing agents can of course also be used.
Die Menge an Komplexbildner im erfindungsgemäßen Schmierstoff beträgt im allgemeinen 0,3 bis 3 Gewichtsprozent, und sie macht vorzugsweise 0,5 bis 1,5 Gewichtsprozent aus. Die Menge des als Zusatzstoff (b) dienenden Hydrophobiermittels kann demnach im allgemeinen 0 bis 15 Gewichtsprozent betragen, und vorzugsweise 3 bis 10 Gewichtsprozent ausmachen, und zwar wiederum bezogen auf das Gesamtgewicht aus den im erfindungsgemäßen Schmierstoff vorhandenen einzelnen Komponenten.The amount of complexing agent in the lubricant of the present invention is generally 0.3 to 3 percent by weight, and is preferably 0.5 to 1.5 percent by weight. The amount of the hydrophobicizing agent used as additive (b) can accordingly generally be 0 to 15 percent by weight, and preferably 3 to 10 percent by weight, again based on the total weight of the individual components present in the lubricant according to the invention.
Auch hier eignen sich im Prinzip wiederum all die Stoffe, von denen man weiß, daß sie eine Verstärkung der hydrophoben Eigenschaften der in Rede stehenden Schmierstoffe ergeben. In Abhängigkeit von der Art des im erfindungsgemäßen Schmierstoff vorhandenen natürlichen oder synthetischen hochviskosen Schmieröls oder Schmierfetts sind jedoch gegebenenfalls verschiedenartige Hydrophobiermittel anzuwenden. So müssen bei synthetischen Schmierölen oder Schmierfetten auf Siliconbasis in erster Linie ebenfalls Hydrophobiermittel auf Siliconbasis angewandt werden, und Beispiele für solche Hydrophobiermittel sind Methylsiliconharze, Methylphenylsiliconharze, Siliconalkydharze, Kondensationsprodukte aus Polysiloxanen und Polyestern oder Polyepoxiden, Polysiloxanharze mit Vinylgruppen oder Allylgruppen oder Siloxan-Silazan-Copolymere.Here too, in principle, all those substances are known which are known to increase the hydrophobic properties of the lubricants in question. Depending on the type of natural or synthetic highly viscous lubricating oil or grease present in the lubricant according to the invention, however, various types of hydrophobizing agents may be used. In the case of synthetic lubricating oils or lubricating greases based on silicone, silicone-based water repellents must also be used primarily, and examples of such water repellents are methyl silicone resins, methylphenyl silicone resins, silicone alkyd resins, condensation products from polysiloxanes and polyesters or polyepoxides, polysiloxane resins or vinyl groups or silane groups with allyl groups .
Beruhen die beim erfindungsgemäßen Schmierstoff vorhandenen Schmieröle oder Schmierfette nicht auf Siliconbasis, so daß sie entsprechende natürliche oder synthetische Schmieröle oder Schmierfette darstellen, wie Mineralöle, synthetische Kohlenwasserstoffe, aliphatische oder aromatische Polyether- oder fluorierte Polyether, dann ist der als Hydrophobiermittel dienende Zusatzstoff (b) vorzugsweise ein Tallölharz oder ein Alkydharz.If the lubricating oils or lubricating greases present in the lubricant according to the invention are not silicone-based, so that they represent corresponding natural or synthetic lubricating oils or lubricating greases, such as mineral oils, synthetic hydrocarbons, aliphatic or aromatic polyether or fluorinated polyethers, then the additive serving as a water repellent is (b) preferably a tall oil resin or an alkyd resin.
Die Herstellung der erfindungsgemäßen Schmierstoffe erfolgt durch in der Schmierstofftechnik übliche Verfahren, indem man beispielsweise das jeweilige Schmieröl oder Schmierfett zunächst mit dem eventuell zu verwendenden organischen oder anorganischen Verdickungsmittel vermischt und in das so erhaltene Gemisch dann die erfindungsgemäßen Zusatzstoffe, nämlich den Komplexbildner
- (a) und gegebenenfalls das Hydrophobiermittel
- (b) einmischt. Es kann jedoch auch jede andere Reihenfolge des Vermischens der einzelnen Bestandteile miteinander angewandt werden, so daß sich beispielsweise alle Bestandteile auch zugleich miteinander vermischen und zu einem erfindungsgemäßen Schmierstoff verarbeiten lassen.
- (a) and optionally the water repellent
- (b) interferes. However, any other order of mixing the individual components with one another can also be used, so that, for example, all components can also be mixed with one another at the same time and processed into a lubricant according to the invention.
Der erfindungsgemäße Schmierstoff eignet sich, wie bereits erwähnt, vor allem als Schmierstoff für Wasserarmaturen, wie Wasserhähne und dergleichen, und er wird bevorzugt bei entsprechenden Armaturen aus Keramik, wie beispielsweise aus Aluminiumoxidkeramik, angewandt. Er verleiht den damit behandelten Armaturen dann neben der gewünschten hohen Schmierwirkung und Dichtigkeit vor allem auch eine besonders hohe Lebensdauer ohne vorzeitigen Verlust ihrer Funktionsfähigkeit.As already mentioned, the lubricant according to the invention is particularly suitable as Lubricant for water fittings, such as taps and the like, and it is preferably used for corresponding fittings made of ceramic, such as, for example, made of aluminum oxide ceramic. In addition to the desired high lubrication and tightness, it also gives the fittings treated with them a particularly long service life without premature loss of their functionality.
Die Erfindung wird im folgenden anhand von Beispielen weiter erläutert.The invention is explained in more detail below with the aid of examples.
Bei den folgenden Beispielen werden als Verdickungsmittel unter anderem Polytetrafluorethylen und Polyfluorethylenpropylen angewandt, wobei als Schmieröl außer den angegebenen Dimethylpolysiloxanen unter anderem auch ein Weißöl eingesetzt wird. Hierbei handelt es sich um folgende Produkte mit den wenigstens teilweise angegebenen physikalischen Eigenschaften und der angeführten Bezugsquelle:
- (a) Polytetrafluorethylen
- Als Polytetrafluorethylen wird durchweg HOSTAFLON TF 9202 der Firma Hoechst AG, Frankfurt, verwendet. Die wesentlichen Eigenschaften dieses Polytetrafluorethylens sind ein Schmelzpunkt von etwa 330°C, eine Schmelzviskosität bei 380° C von etwa 103 Pa ·sec, eine Dichte von etwa 2,2 und eine mittlere Teilchengröße von etwa 3 bis 6 µm. Anstatt dieses Verdickungsmittels können mit vergleichbarem Erfolg jedoch auch andere Verdickungsmittel verwendet werden, wie beispielsweise die von der gleichen Herstellerin stammenden Verdickungsmittel HOSTAFLON TF 9205 oder TF VP 9203.
- (b) Polyfluorethylenpropylen
- Als Polyfluorethylenpropylen wird das Produkt mit der Warenbezeichnung TL-120 der LNP Corporation, Pennsylvania, V.St.A, verwendet, das in deren Prospekt mit der Kennung P. D. 601-4-880 beschrieben ist. Die wesentlichen Eigenschaften dieses Polyfluorethylenpropylens sind eine Dichte von etwa 2,12 bis 2,18, eine mittlere Teilchengröße von 1 bis 2 jlm und eine Oberfläche von 10 m2/g. Statt dieses Polyfluorethylenpropylens können natürlich auch andere Polyfluorethylenpropylene als organische Verdickungsmittel verwendet werden.
- (c) Weißöl
- Als Weißöl wird Paraffinum subliquidum 210 (extra schwer) der Fa. Texaco verwendet. Hierbei handelt es sich um ein Öl, das frei von Aromaten und ungesättigten Kohlenwasserstoffen ist und der Vorschrift DAB VII (Das Deutsche Arzneibuch) entspricht. Statt dessen können natürlich auch andere Weißöle verwendet werden.
- (a) Polytetrafluoroethylene
- HOSTAFLON TF 9202 from Hoechst AG, Frankfurt, is used throughout as the polytetrafluoroethylene. The essential properties of this polytetrafluoroethylene are a melting point of approximately 330 ° C., a melt viscosity at 380 ° C. of approximately 10 3 Pa · sec, a density of approximately 2.2 and an average particle size of approximately 3 to 6 μm. Instead of this thickener, however, other thickeners can be used with comparable success, such as, for example, the thickeners HOSTAFLON TF 9205 or TF VP 9203 from the same manufacturer.
- (b) Polyfluoroethylene propylene
- The product with the trade name TL-120 from LNP Corporation, Pennsylvania, V.St.A, is used as polyfluoroethylene propylene, which is described in its brochure with the identifier PD 601-4-880. The essential characteristics of this Polyfluorethylenpropylens are a density of about 2.12 to 2.18, an average particle size 1 to 2 j l m and a surface area of 10 m 2 / g. Instead of this polyfluoroethylene propylene, other polyfluoroethylene propylenes can of course also be used as organic thickeners.
- (c) white oil
- Paraffinum subliquidum 210 (extra heavy) from Texaco is used as the white oil. This is an oil that is free from aromatics and unsaturated hydrocarbons and complies with the DAB VII (The German Pharmacopoeia) regulation. Of course, other white oils can also be used instead.
In einem Homogenisator vermischt man 79 Gewichtsprozent eines Dimethylpolysiloxans mit einer Viskosität bei 25°C von 50 000 mm2.sec -1, 20 Gewichtsprozent eines Polytetrafluorethylens (HOSTAFLON TF 9202) und 1 % Nitrilotriessigsäure miteinander. Der auf diese Weise erhaltene Schmierstoff sieht milchig weiß aus und eignet sich vor allem zur Schmierung und Dichtung von Wasserarmaturen, und zwar insbesondere Keramikarmaturen.In a homogenizer, 79 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C. of 50,000 mm 2 sec - 1 , 20 percent by weight of a polytetrafluoroethylene (HOSTAFLON TF 9202) and 1% of nitrilotriacetic acid are mixed together. The lubricant obtained in this way looks milky white and is particularly suitable for the lubrication and sealing of water fittings, in particular ceramic fittings.
In einem Homogenisator vermischt man 69 Gewichtsprozent eines Dimethylpolysiloxans mit einer Viskosität bei 25°C von 100 000 mm2.sec-1 und 20 Gewichtsprozent Polytetrafluorethylen der oben angegebenen Art miteinander, worauf man unter weiterem Vermischen 10 Gewichtsprozent eines Dimethyltrimethylpolysiloxans mit einer Viskosität bei 25°C von 600 bis 1000 mm2.sec-1 und 1 Gewichtsprozent trans-1,2-Cyclohexylen- dinitrilotetraessigsäure zugibt. Man gelangt wiederum zu einem Schmierstoff mit milchig weißem Aussehen.In a homogenizer, 69 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C. of 100,000 mm 2 .sec -1 and 20 percent by weight of polytetrafluoroethylene of the type specified above are mixed together, followed by further mixing 10 percent by weight of a dimethyltrimethylpolysiloxane with a viscosity at 25 ° C from 600 to 1000 mm 2. sec- 1 and 1 weight percent trans-1,2-cyclohexylene-dinitrilotetraacetic acid. A lubricant with a milky white appearance is again obtained.
In einem Homogenisator vermischt man 60 Gewichtsprozent eines Dimethylpolysiloxans mit einer Viskosität bei 25°C von 60 000 mm2.sec-1 und 20 Gewichtsprozent eines Polyfluorethylenpropylens (TL 120) miteinander und gibt dazu dann unter weiterer Durchmischung 10 Gewichtsprozent eines Methylphenylpolysiloxans mit einer Viskosität bei 25°C von 5000 mm2·sec-1 und 10 Gewichtsprozent Vinylbenzyltrimethylammoniumpolymeres, wodurch man wiederum zu einem milchig weißen Schmierstoff gelangt.In a homogenizer, 60 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C. of 60,000 mm 2 sec- 1 and 20 percent by weight of a polyfluoroethylene propylene (TL 120) are mixed with one another and then, with further mixing, 10 percent by weight of a methylphenylpolysiloxane with a viscosity are added 25 ° C of 5000 mm 2 · sec -1 and 10 weight percent vinylbenzyltrimethylammonium polymer, which in turn leads to a milky white lubricant.
In einem Homogenisator vermischt man 69 Gewichtsprozent eines Dimethylpolysiloxans mit einer Viskosität bei 25°C von 60 000 mm2.sec-1 mit 20 Gewichtsprozent Polytetrafluorethylen und versetzt das ganze unter weiterer Durchmischung mit 10 Gewichtsprozent eines Dimethyltrimethylpolysiloxans mit einer Viskosität bei 25° C von 600 bis 1000 mm2.sec-1 und 1 Gewichtsprozent Ethylendiamintetraessigsäure. Der auf diese Weise erhaltene milchig weiße Schmierstoff zeigt eine Ruhpenetration mm/10 (50 g Konus) von 330 bis 350, eine Wasserbeständigkeit nach DIN 51807 bei 5 h/90°C von 0 und eine dynamische Zähigkeit bei 200 sec-1 von 33 000 mm2·sec-1 (20°C), 29 000 mm2·sec-1 (40°C) und 25 000 mm2·sec-1 (60°C). Der theoretische Temperaturbereich dieses Schmierstoffs reicht von -40° C bis +200°C.69% by weight of a dimethylpolysiloxane with a viscosity at 25 ° C of 60,000 mm 2 sec- 1 are mixed in a homogenizer with 20% by weight of polytetrafluoroethylene, and the whole is mixed with further mixing with 10% by weight of a dimethyltrimethylpolysiloxane with a viscosity at 25 ° C of 600 up to 1000 mm 2. sec- 1 and 1 weight percent ethylenediaminetetraacetic acid. The milky white lubricant obtained in this way shows a resting penetration mm / 10 (50 g cone) from 330 to 350, a water resistance according to DIN 51807 at 5 h / 90 ° C from 0 and a dynamic toughness at 200 sec- 1 of 33,000 mm 2 · sec -1 (20 ° C), 29,000 mm 2 · sec -1 (40 ° C) and 25,000 mm 2 · sec -1 (60 ° C). The theoretical temperature range of this lubricant ranges from -40 ° C to + 200 ° C.
In einem Homogenisator vermischt man 79 Gewichtsprozent eines Dimethylpolysiloxans mit einer Viskosität bei 25°C von 60 000 mm2.sec -1 und 20 Gewichtsprozent Polytetrafluorethylen miteinander und versetzt das erhaltene Gemisch dann unter weiterer Durchmischung mit 1 Gewichtsprozent Ethylendiamintetraessigsäure, wodurch man zu einem Schmierstoff mit milchig weißem Aussehen gelangt.In a homogenizer, 79 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C. of 60,000 mm 2 sec- 1 and 20 percent by weight of polytetrafluoroethylene are mixed with one another, and the mixture obtained is then mixed with 1 percent by weight of ethylenediaminetetraacetic acid, resulting in a lubricant milky white appearance.
In einem Homogenisator vermischt man 83 Gewichtsprozent eines Weißöls (Paraffinum subliquidum 210) mit 10 Gewichtsprozent Aluminiumstearatbenzoatkomplex und gibt dazu dann unter weiterer Durchmischung 5 Gewichtsprozent eines Tallölharzes (40 %) und 2 Gewichtsprozent Nitrilotriessigsäure. Man erhält einen etwas gelblich aussehenden Schmierstoff.83% by weight of a white oil (Paraffinum subliquidum 210) are mixed with 10% by weight of aluminum stearate benzoate complex in a homogenizer, and 5% by weight of a tall oil resin (40%) and 2% by weight of nitrilotriacetic acid are then added with further mixing. A somewhat yellowish-looking lubricant is obtained.
In einem Homogenisator vermischt man 80 Gewichtsprozent eines Dimethylpolysiloxans mit einer Viskosität bei 25°C von 60 000 mm2.sec-1 mit 20 Gewichtsprozent eines Polytetrafluorethylens, wodurch man zu einem herkömmlichen Armaturen- und Dämpfungsfett gelangt, das dem unter dem Handelsnamen UNISILIKON L 641 bekannten Siliconfett der Firma Klüber Lubrication München KG entspricht.In a homogenizer, 80 percent by weight of a dimethylpolysiloxane with a viscosity at 25 ° C of 60,000 mm 2 sec- 1 is mixed with 20 percent by weight of a polytetrafluoroethylene, resulting in a conventional valve and damping grease, which is sold under the trade name UNISILIKON L 641 known silicone grease from Klüber Lubrication München KG.
Für diese Vergleichsversuche wird die Wasserarmatur der Firma Rokal mit der Bezeichnung Karibik 2000 (Artikel Nr. 017005) verwendet, bei der zwei perforierte Keramikscheiben den Wasserdurchfluß und die Mischtemperatur steuern. Bei dieser Armatur handelt es sich um eine sogenannte Einhand-Waschbatterie mit glattem Körper. Der zu untersuchende Schmierstoff wird jeweils mittels der sogenannten Aufwalztechnik auf die gereinigten Oberflächen der zu schmierenden Keramikscheiben aufgebracht und dann folgendem Prüfzyklus unterworfen: Wassertemperatur = 80°C, Mischbetrieb = 15°C, Schließen und Öffnen auf wechselnden Stellungen durch asynchrone Antriebe. Der Prüfstand arbeitet mit 19 radialen und 21 axialen Zyklen pro Minute.For these comparative tests, the water fitting from Rokal with the designation Karibik 2000 (article no. 017005) is used, in which two perforated ceramic discs control the water flow and the mixing temperature. This faucet is a so-called single-lever washbasin with a smooth body. The lubricant to be examined is applied to the cleaned surfaces of the ceramic disks to be lubricated using the so-called roller technology and then subjected to the following test cycle: water temperature = 80 ° C, mixed operation = 15 ° C, closing and opening in changing positions by asynchronous drives. The test bench works with 19 radial and 21 axial cycles per minute.
Unter jeweils gleichen Bedingungen unterzieht man die aus der folgenden Aufstellung hervorgehenden Schmierstoffe einem Leistungsvergleich in der Haushaltswasserarmatur Karibik 2000 der Firma Rokal, wodurch man folgendeUnder the same conditions, the lubricants shown in the following list are subjected to a performance comparison in the Caribbean 2000 household water fitting from Rokal
Ergebnisse erhält:
Die obigen Versuchsdaten zeigen, daß der erfindungsgemäße Schmierstoff (Beispiel 4 = Gehalt an Schmieröl + Verdickungsmittel + Komplexbildner, Beispiel 5 = Gehalt an Schmieröl + Verdickungsmittel + Komplexbildner + Hydrophobiermittel) im Verhältnis zu einem bekannten Schmierstoff (Beispiel 7 = Gehalt an Schmieröl + Verdickungsmittel) eine wesentlich höhere Leistung ergibt, da er im Prüfstand mit der erwähnten Wasserarmatur wesentlich mehr Zyklen aushält.The above experimental data show that the lubricant according to the invention (Example 4 = content of lubricating oil + thickener + complexing agent, Example 5 = content of lubricating oil + thickening agent + complexing agent + hydrophobizing agent) in relation to a known lubricant (Example 7 = content of lubricating oil + thickening agent) results in a significantly higher performance, since it can withstand significantly more cycles in the test bench with the water valve mentioned.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843447346 DE3447346A1 (en) | 1984-12-24 | 1984-12-24 | LUBRICANT FOR WATER FITTINGS LIKE TAPS AND THE LIKE |
DE3447346 | 1984-12-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0186188A2 EP0186188A2 (en) | 1986-07-02 |
EP0186188A3 EP0186188A3 (en) | 1987-10-07 |
EP0186188B1 true EP0186188B1 (en) | 1989-08-23 |
Family
ID=6253859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85116505A Expired EP0186188B1 (en) | 1984-12-24 | 1985-12-23 | Lubricant for water fittings such as water taps and the like |
Country Status (5)
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---|---|
US (1) | US4784795A (en) |
EP (1) | EP0186188B1 (en) |
JP (1) | JPS61159493A (en) |
CA (1) | CA1250279A (en) |
DE (2) | DE3447346A1 (en) |
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US5055210A (en) * | 1989-01-30 | 1991-10-08 | Tennessee Valley Authority | Cleaning and lubricating composition for mechanical seals |
US5154840A (en) * | 1992-01-06 | 1992-10-13 | Lyondell Petrochemical Company | Environmentally friendly grease compositions |
US20060201600A1 (en) * | 2003-01-17 | 2006-09-14 | Kollin Edward B | Lubricants for run-flat tire systems |
US7040367B2 (en) * | 2003-01-17 | 2006-05-09 | Kollin Edward B | Lubricants for run-flat tire systems |
US7462661B2 (en) * | 2005-07-19 | 2008-12-09 | Xerox Corporation | Release fluid additives |
ITMI20060568A1 (en) * | 2006-03-27 | 2007-09-28 | Nuova Osmo S N C | PROCEDURE TO REDUCE THE ACCESSION OF LIMESTONE TO TAP FILLET COMPONENTS PARTICULARLY FOR HYGIENIC AND SANITARY SYSTEMS |
US11174418B2 (en) * | 2016-06-27 | 2021-11-16 | William Marsh Rice University | Fluorine and hydrogen-based adhesive compositions and methods of making the same |
US11760952B2 (en) | 2021-01-12 | 2023-09-19 | Ingevity South Carolina, Llc | Lubricant thickener systems from modified tall oil fatty acids, lubricating compositions, and associated methods |
CN113717529A (en) * | 2021-08-25 | 2021-11-30 | 广州汇纳新材料科技有限公司 | Heat-conducting silicone grease with gradually increased heat-conducting coefficient and preparation method thereof |
DE102021130746A1 (en) | 2021-11-24 | 2023-05-25 | Klüber Lubrication München Se & Co. Kg | GREASE |
Family Cites Families (16)
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US2352164A (en) * | 1942-09-07 | 1944-06-27 | Shell Dev | Metal deactivator |
GB700552A (en) * | 1949-08-26 | 1953-12-02 | California Research Corp | Complex aluminum soaps as new compounds and as additives for grease compositions |
US2830019A (en) * | 1954-09-29 | 1958-04-08 | Standard Oil Co | Additive for mineral oil |
US2959547A (en) * | 1957-01-31 | 1960-11-08 | Ray S Pyle | Aqueous coolant for metal working machines |
US3240701A (en) * | 1961-08-21 | 1966-03-15 | Geigy Chem Corp | Inhibiting growth of bacteria in fluids |
US3265620A (en) * | 1963-08-29 | 1966-08-09 | Donald K Heiman | Cutting fluid |
DE1594398A1 (en) * | 1965-03-29 | 1970-08-06 | Dow Chemical Co | Lubricant stabilization for recovery when rolling aluminum and its alloys |
US3860521A (en) * | 1972-03-20 | 1975-01-14 | Basf Wyandotte Corp | Soap based chain conveyor lubricant |
DE2704225A1 (en) * | 1977-02-02 | 1978-08-03 | Westfaelische Metall Industrie | Perforated, blow-moulded thermoplastics, container mfr. - by piercing an inflated parison with needles which are retracted after cooling |
JPS5431683A (en) * | 1977-08-15 | 1979-03-08 | Neos Kk | Cutting oil |
DE2736874A1 (en) * | 1977-08-16 | 1979-03-01 | Metallgesellschaft Ag | METHOD FOR EASIER COLD FORMING OF METALS |
CA1149371A (en) * | 1979-08-07 | 1983-07-05 | Peter F. King | Aqueous acidic lubricant coating composition and method |
US4294713A (en) * | 1980-03-31 | 1981-10-13 | Olin Corporation | Grease compositions containing selected shielded polysilicate compounds |
US4443348A (en) * | 1982-07-13 | 1984-04-17 | General Electric Company | Protective lubricant composition |
JPS5976882A (en) * | 1982-10-26 | 1984-05-02 | New Japan Chem Co Ltd | Anticorrosive composed of non mineral oil |
US4537694A (en) * | 1983-09-23 | 1985-08-27 | Mobil Oil Corporation | Diamine carboxylates and lubricant compositions containing same |
-
1984
- 1984-12-24 DE DE19843447346 patent/DE3447346A1/en active Granted
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1985
- 1985-12-17 CA CA000497871A patent/CA1250279A/en not_active Expired
- 1985-12-23 DE DE8585116505T patent/DE3572508D1/en not_active Expired
- 1985-12-23 JP JP60288045A patent/JPS61159493A/en active Granted
- 1985-12-23 EP EP85116505A patent/EP0186188B1/en not_active Expired
- 1985-12-27 US US06/814,142 patent/US4784795A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JPS61159493A (en) | 1986-07-19 |
US4784795A (en) | 1988-11-15 |
EP0186188A3 (en) | 1987-10-07 |
JPH0412919B2 (en) | 1992-03-06 |
DE3447346A1 (en) | 1986-06-26 |
DE3572508D1 (en) | 1989-09-28 |
EP0186188A2 (en) | 1986-07-02 |
DE3447346C2 (en) | 1989-09-14 |
CA1250279A (en) | 1989-02-21 |
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