DE4041156C2 - Biodegradable fluid grease for automatic central lubrication systems - Google Patents

Biodegradable fluid grease for automatic central lubrication systems

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Publication number
DE4041156C2
DE4041156C2 DE4041156A DE4041156A DE4041156C2 DE 4041156 C2 DE4041156 C2 DE 4041156C2 DE 4041156 A DE4041156 A DE 4041156A DE 4041156 A DE4041156 A DE 4041156A DE 4041156 C2 DE4041156 C2 DE 4041156C2
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Germany
Prior art keywords
fluid grease
synthetic
hand
thickener
din
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Expired - Fee Related
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DE4041156A
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German (de)
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DE4041156A1 (en
Inventor
Manfred Dipl Ing Postler
Guenter Ott
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KAJO SCHMIERSTOFF TECHNIK GmbH
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KAJO SCHMIERSTOFF TECHNIK GmbH
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Priority to DE4041156A priority Critical patent/DE4041156C2/en
Publication of DE4041156A1 publication Critical patent/DE4041156A1/en
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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
    • 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
    • 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
    • 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
    • C10M113/00—Lubricating compositions characterised by the thickening agent being an inorganic material
    • C10M113/10—Clays; Micas
    • 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
    • C10M113/00—Lubricating compositions characterised by the thickening agent being an inorganic material
    • C10M113/12—Silica
    • 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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/04—Hydroxy compounds
    • C10M129/10—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • 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
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • C10M137/08—Ammonium or amine salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/10—Compounds containing silicon
    • C10M2201/102—Silicates
    • C10M2201/103—Clays; Mica; Zeolites
    • 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
    • C10M2201/10—Compounds containing silicon
    • C10M2201/102—Silicates
    • C10M2201/103—Clays; Mica; Zeolites
    • C10M2201/1036—Clays; Mica; Zeolites 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/10—Compounds containing silicon
    • C10M2201/105—Silica
    • 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
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • 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
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl 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
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/027—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
    • 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
    • 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
    • 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
    • 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
    • C10M2223/043—Ammonium or amine salts thereof

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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)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Description

Die Erfindung betrifft ein zumindest zu 90% in 21 Tagen biologisch abbaubares Fließfett für automatische Zentralschmieranlagen, insbesondere für Nutzfahrzeuge gemäß DIN 75 203 und DIN 24 271, das aus einem oder mehreren synthetischen Grundölen, einem anorganischen Eindicker und mehreren organischen Additiven besteht, das im Temperaturbereich von -25°C bis +80°C uneingeschränkt förder- und dosierbar ist.The invention relates to at least 90% biologically in 21 days degradable fluid grease for automatic central lubrication systems, especially for commercial vehicles according to DIN 75 203 and DIN 24 271, the one or more synthetic base oils, an inorganic one There is thickener and several organic additives Unrestricted delivery in the temperature range from -25 ° C to + 80 ° C and can be dosed.

Die Anforderungen an die Schmierstoffe für automatische Zentralschmieranlage der Verbrauchsschmierung, insbesondere von Nutzfahrzeugen, für den Temperaturbereich von -25°C bis +80°C sind durch ihre Förderbarkeit und reproduzierbare Dosiergenauigkeit sowie durch ihre Schmierfähigkeit in der Lagerstelle definiert. Für Einleitungs- und Mehrleitungsanlagen sind sie als Fließfette auf naphtenbasischen, weniger auf paraffinbasischen Mineralölen der NLGI-Klassen 000, 000 bis 00 oder 00 konzipiert; als Eindicker kommen die Metallsalze von Fettsäuren auf der Basis von Kalzium, Kalzium-Lithium oder - mit Einschränkungen - Lithium infrage; hinzu kommen Korrosions- und Oxidationsinhibitoren und EP-Zusätze, z. B. in Form von Zinkdithiophosphat o. ä. Diese oder ähnliche Zusammensetzungen in entsprechenden Prozentsätzen ihrer Massenanteile gelten als klassische Schmierstoffe zur Schmierung und Verschleißminderung hochbeanspruchter Bauteile, z. B. von Achsschenkelbolzen an Kraftfahrzeugen.The requirements for lubricants for automatic central lubrication systems consumption lubrication, especially of commercial vehicles, for the temperature range from -25 ° C to + 80 ° C through its conveyability and reproducible dosing accuracy as well defined by their lubricity in the bearing. For Single-line and multi-line systems are based on fluid greases naphthenic, less on paraffinic mineral oils NLGI classes 000, 000 to 00 or 00 designed; as a thickener come the metal salts of fatty acids based on calcium, Calcium lithium or - with restrictions - lithium in question; added come corrosion and oxidation inhibitors and EP additives, e.g. B. in the form of zinc dithiophosphate or the like. This or similar Compositions in corresponding percentages of their mass fractions are considered classic lubricants for lubrication and  Wear reduction of highly stressed components, e.g. B. of kingpin on motor vehicles.

Als neue Anforderungen an die Verbrauchsschmierung ist in letzter Zeit verstärkt und ergänzend der Gedanke des Umweltschutzes getreten, d. h. die durch die Verbrauchsschmierung gegebene Belastung unserer Umwelt muß auf ein Mindestmaß reduziert werden. Erreicht wird dies in zweifacher Hinsicht:As new demands on the consumer lubrication is in the latter Time intensified and supplemented by the idea of environmental protection, d. H. the load given by the lubrication system our environment must be reduced to a minimum. Reached this will be done in two ways:

  • 1. Reduzierung der pro Zeiteinheit einer Lagerstelle angebotenen Schmierstoffmenge im Sinne der Minimalmengenschmierung; diese Maßnahme kommt den Forderungen der Abfallwirtschaft in primärer Weise entgegen. Bekanntlich sind die verbrauchten Schmierstoffe voll in das deutsche Abfallgesetz (1987) integriert worden. Diese Lösung muß gesamtheitlich sämtliche Parameter eines Tribosystems berücksichtigen.1. Reduction of the offered per time unit of a depository Quantity of lubricant in the sense of minimum quantity lubrication; this The measure comes primarily from the demands of waste management Opposite. The lubricants used are known fully integrated into the German Waste Act (1987). This The solution must include all the parameters of a tribological system consider.
  • 2. Substitution der Schmierstoffe auf Mineralölbasis mit Metallsalzen und metallhaltigen Additiven durch weitestgehend biologisch abbaubare Qualitäten als sekundäre Maßnahme.2. Substitution of mineral oil-based lubricants with metal salts and metal-containing additives through largely biological degradable qualities as a secondary measure.

Während die Grundöle natürliche Öle, wie Rapsöle, wegen ihres relativ hohen und nicht definierbaren Pourpoints, verbunden mit erheblichen Förderschwierigkeiten bei Minustemperaturen, nach dem heutigen Stand der Technik weitgehend ausscheiden, bieten sich gewisse synthetische Ester wegen ihrer hervorragenden Kälteeigenschaften in Verbindung mit ihrer hervorragenden biologischen Abbaurate, die in der Größenordnung nahezu 100% liegen können, direkt an.While the base oils are natural oils, like rapeseed oils, because of their relative high and undefinable pour points combined with considerable Funding difficulties at sub-zero temperatures, according to today's The state of the art is largely eliminated certain synthetic esters because of their excellent low-temperature properties combined with their excellent biological Degradation rate, which can be of the order of almost 100%, directly to.

Bei den Eindickern gelten Metallsalze als mehr oder weniger toxisch; dies trifft auch mit Einschränkungen für Lithium zu. Als Eindicker kann jedoch auf anorganische Substanzen z. B. auf Siliziumdioxid oder in der freien Natur in Form von Ton vorkommendes Aluminiumhydrosilikat sowie ähnliche Magnesiumverbindungen zurückgegriffen werden, welche ein ausgeprägtes Eindickungsvermögen für organisch-chemische Flüssigkeiten mit ausreichender chemischer Stabilität besitzen. Infrage kommen hier entweder die anorganischen Gelfette (hochdisperse Kieselsäuren) oder die anorganischen Bentonitfette (organophile Tonerden) welche durch die Kleinheit und die Gestalt ihrer Primärpartikel bei der Schubverformung während des Fördervorgangs tendenziell zu einem sehr günstigen inneren Reibungsverhalten führen, das bei Kälteeinwirkungen - neben dem Kälteverhalten des Grundöls - mit von entscheidender Bedeutung beim Fördervorgang ist. Andererseits sind diese Stoffe bezüglich einer biologischen Abbaubarkeit als absolut neutral anzusehen, da Siliziumverbindungen im sehr erheblichen Umfang in der freien Natur vorkommen.In the case of thickeners, metal salts are considered more or less toxic; this also applies with restrictions for lithium. As a thickener, however, inorganic substances such. B. on Silicon dioxide or occurring in the wild in the form of clay Aluminum hydrosilicate and similar magnesium compounds be used, which has a pronounced thickening ability for organic chemical liquids with sufficient  possess chemical stability. Either the inorganic gel fats (highly disperse silicas) or the inorganic Bentonite fats (organophilic clays) which by the smallness and shape of their primary particles in shear deformation during the funding process tends to be very favorable internal friction behavior that result from the effects of cold - in addition to the cold behavior of the base oil - also of decisive importance Importance in the funding process. On the other hand, these are Biodegradable substances as absolute to be viewed neutrally, since silicon compounds are very significant Scope occur in the wild.

Als Additive kommen abbaubare organische Substanzen auf der Basis von Fettsäuren infrage.Degradable organic substances come as additives Base of fatty acids in question.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein solches Fließfett zu schaffen, das auch bei Kälteeinwirkungen in automatische Zentralschmieranlagen förderbar ist, und das nach der Methode des europäischen CEC- Testes zur Prüfung der Abbaubarkeit von Schmierölen eine Abbaurate von über 90% in 21 Tagen liefert, bei hinreichenden Schmier- und Verschleißschutzeigenschaften.Based on this prior art, the invention lies The task is to create such a fluid grease that also in the event of cold effects in automatic central lubrication systems is eligible for funding, using the method of the European CEC Testes to check the degradability of lubricating oils a degradation rate of over 90% in 21 days with sufficient lubrication and wear protection properties.

Bedingt durch das Arbeitsverfahren der systematisch-automatischen Verbrauchsschmierung im Bewegungszustand des Fahrzeugs wird der jungfräuliche Schmierstoff in geringen bis geringsten Mengen pro Dosierung, bzw. pro Zeiteinheit nur einmal der Reibstelle zugeführt; seine Verweilzeit ist dort relativ kurz, d. h. die Anforderungen an seine Stabilität sind bei diesem Schmierverfahren wesentlich geringer als bei der herkömmlichen Handabschmierung im Ruhezustand des Fahrzeugs und bei der anschließenden längeren Verweilzeit in der Lagerstelle.Due to the working method of the systematic-automatic Consumption lubrication when the vehicle is in motion becomes the virgin lubricant in small to very small amounts only once per friction or time unit of the friction point fed; its dwell time there is relatively short, i. H. the This lubrication process demands stability much less than with conventional hand lubrication in the idle state of the vehicle and in the subsequent longer stay in the depository.

Die Lösung dieser Aufgabenstellung erfolgt mit den Merkmalen des Kennzeichnungsteils von Anspruch 1.This task is solved with the characteristics of Labeling part of claim 1.

Die meßtechnische qualitative reproduzierbare Erfassung erfolgt durch die infrarot-Spektralanalyse, welche die charakteristischen Frequenzen bestimmter Atomgruppen organischer Verbindungen, insbesondere der Ester bestimmt. Man benutzt deshalb die IR-Spektroskopie zur Identitätskontrolle von Schmierstoffen durch einen Vergleich mit Referenzmustern.The metrological qualitative reproducible acquisition is carried out by infrared spectral analysis,  which are the characteristic frequencies of certain atomic groups organic compounds, especially the esters. IR spectroscopy is therefore used for identity control of lubricants by comparison with reference samples.

Wenn der Eindicker als organophile Tonerde aus oleophilem Aluminiumhydrosilikat besteht, weist das erfindungsgemäße Fließfett bevorzugt ein Infrarot- Spektrogramm auf, wie es in Fig. 1 gezeigt ist.If the thickener consists of oleophilic aluminum hydrosilicate as organophilic alumina, the fluid grease according to the invention preferably has an infrared spectrogram, as shown in FIG. 1.

Claims (8)

1. Fließfett der Konsistenzklasse NLGI 000, 000/00 oder 00 nach DIN 51818 zur Förderung in automatischen Zentralschmierungsanlagen der Verbrauchsschmierung nach DIN 24271 oder 75203, das in 21 Tagen zu mindestens 90% nach dem CEC-Test L-33-T-82 biologisch abbaubar ist, welches
  • - aus einem Grundöl oder einem Gemisch mehrerer Grundöle auf synthestischer und/oder natürlicher Basis, desseen/deren Flammpunkt nach DIN-ISO 2492 größer als 120°C und dessen/deren Pourpoint nach DIN-ISO 3016 kleiner als -15°C ist/sind,
  • - aus einem oder mehreren Eindickern auf organischer oder anorganischer schwermetallfreier Basis
  • - und aus mindestens zwei, metall-, schwefel- und/oder chlorfreien Additiven, die zur Verbesserung einerseits des Druckaufnahmevermögens/ Verschleißschutzes und andererseits der Oxidationsstabilität/des Korrosionsschutzes dienen, zusammengesetzt ist,
1. Fluid grease of the consistency class NLGI 000, 000/00 or 00 according to DIN 51818 for delivery in automatic central lubrication systems for consumption lubrication according to DIN 24271 or 75203, which in 21 days is at least 90% organic according to the CEC test L-33-T-82 is degradable, which one
  • - from a base oil or a mixture of several base oils on a synthetic and / or natural basis, the flash point of which is greater than 120 ° C according to DIN ISO 2492 and the pour point of which is less than -15 ° C according to DIN ISO 3016 ,
  • - from one or more thickeners on an organic or inorganic basis free of heavy metals
  • - and is composed of at least two, metal-, sulfur- and / or chlorine-free additives which serve to improve pressure absorption / wear protection on the one hand and oxidation stability / corrosion protection on the other hand,
dadurch gekennzeichnet, daß das synthetische oder synthetische und natürliche Grundöl aus mindestens einem Ester beteht, der/die mindestens
  • - aus einem mindestens 2wertigen Alkohol
  • - mit einer 1wertigen gesättigten oder ungesättigten Fettsäure
 characterized in that the synthetic or synthetic and natural base oil consists of at least one ester which is at least
  • - from at least dihydric alcohol
  • - with a 1-valent saturated or unsaturated fatty acid
zusammengesetzt ist/sind (Di-Ester), und dessen/deren Massenanteil insgesamt 76 bis 97,8% beträgt/betragen, der anorganische Eindicker
  • - aus mindestens einer Siliziumverbindung besteht, dessen Massenanteil insgesamt 2 bis 20% beträgt, und die organischen Additive
  • - einerseits aus Aminophosphaten und
  • - andererseits aus Aminen und/oder Phenolen, je gesamthaft mit einem Massenanteil von 0,1 bis 2% bestehen.
is / are composed (di-esters), and whose mass fraction is / are 76 to 97.8% in total, the inorganic thickener
  • - consists of at least one silicon compound, the mass fraction of which is a total of 2 to 20%, and the organic additives
  • - On the one hand from amino phosphates and
  • - On the other hand, consist of amines and / or phenols, each with a mass fraction of 0.1 to 2%.
2. Fließfett nach Anspruch 1, dadurch gekennzeichnet, daß das Grundöl aus einem Gemisch von mindestens einem synthetischen Di-Ester und einem natürlichen Öl besteht.2. fluid grease according to claim 1, characterized in that the base oil from a mixture of at least one synthetic Di-ester and a natural oil. 3. Fließfett nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Eindicker als hochdisperse Kieselsäure aus oleophilem Siliziumdioxyd besteht.3. fluid grease according to claim 1 and 2, characterized in that the thickener as highly disperse silica from oleophilic Silicon dioxide exists. 4. Fließfett nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Eindicker als organophile Tonerde aus oleophilem Aluminiumhydrosilikat besteht. 4. fluid grease according to claim 1 and 2, characterized in that the thickener as organophilic alumina from oleophilic aluminum hydrosilicate consists.   5. Fließfett nach Anspruch 1, dadurch gekennzeichnet, daß das Infrarot-Spektrogramm seines oder seiner Grundöle einen qualitativ weitgehend ähnlichen Verlauf wie das Diagramm des vollständigen Fließfettes besitzt.5. fluid grease according to claim 1, characterized in that the infrared spectrogram of his or her base oils qualitatively largely similar course as the diagram of the complete fluid grease. 6. Fließfett nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Additive aus sekundären Aminen und/oder Alkylphenolen bestehen.6. fluid grease according to one or more of claims 1 to 5, characterized in that the additives from secondary amines and / or alkylphenols consist.
DE4041156A 1990-12-21 1990-12-21 Biodegradable fluid grease for automatic central lubrication systems Expired - Fee Related DE4041156C2 (en)

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US6010985A (en) * 1997-01-31 2000-01-04 Elisha Technologies Co L.L.C. Corrosion resistant lubricants greases and gels
US6017857A (en) * 1997-01-31 2000-01-25 Elisha Technologies Co Llc Corrosion resistant lubricants, greases, and gels
CA2277062A1 (en) * 1997-01-31 1998-08-06 Elisha Technologies Co. L.L.C. Corrosion resistant lubricants, greases and gels

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US4298481A (en) * 1979-02-23 1981-11-03 Tenneco Chemicals, Inc. High temperature grease compositions

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