EP0433405B1 - Lubricating grease composition - Google Patents

Lubricating grease composition Download PDF

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Publication number
EP0433405B1
EP0433405B1 EP90908203A EP90908203A EP0433405B1 EP 0433405 B1 EP0433405 B1 EP 0433405B1 EP 90908203 A EP90908203 A EP 90908203A EP 90908203 A EP90908203 A EP 90908203A EP 0433405 B1 EP0433405 B1 EP 0433405B1
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EP
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Prior art keywords
compound
residue
thickening agent
atoms
lubricating grease
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Expired - Lifetime
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EP90908203A
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German (de)
French (fr)
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EP0433405A1 (en
Inventor
Edwin Seubert
Dieter Sohn
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Klueber Lubrication Muenchen GmbH and Co KG
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Klueber Lubrication Muenchen GmbH and Co KG
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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
    • C10M169/02—Mixtures of base-materials and thickeners
    • 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
    • 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
    • C10M119/00—Lubricating compositions characterised by the thickener being a macromolecular compound
    • C10M119/24—Lubricating compositions characterised by the thickener being a macromolecular compound containing nitrogen
    • 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
    • C10M169/04—Mixtures of base-materials and additives
    • 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
    • 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
    • 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
    • C10M2207/284—Esters of aromatic monocarboxylic acids
    • 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
    • C10M2207/285—Esters of aromatic polycarboxylic acids
    • 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
    • C10M2207/285—Esters of aromatic polycarboxylic acids
    • C10M2207/2855—Esters of aromatic polycarboxylic acids 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/34—Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives
    • 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
    • C10M2215/10—Amides of carbonic or haloformic acids
    • C10M2215/102—Ureas; Semicarbazides; Allophanates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/042—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds between the nitrogen-containing monomer and an aldehyde or ketone
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/043—Mannich bases

Definitions

  • the invention relates to a grease composition
  • a grease composition comprising a base oil and a smaller proportion of a thickener based on a polyurea compound, and also conventional additives.
  • Such lubricants are e.g. known from DE-OS 33 03 442, wherein the base oil is a mineral or synthetic oil, such as a naphthenic or paraffin-based base oil and the thickener is the reaction product of an isocyanate with at least 3 isocyanate groups in the molecule with a long-chain aliphatic monoamine, preferably with 16 to 24 C. -Atoms is.
  • Such grease compositions can be used for continuous operating temperatures of 150-160 ° C.
  • compositions which, however, contain an ester as the base oil and have a consistency with a penetration of 220 to 385 at 0.1 mm and wherein the thickener consists of an aromatic mono- or diisocyanate and an alkyl, alkenyl radical with 8 to 22 carbon atoms or Aryl radical composed of 6 to 10 carbon atoms has been found to be particularly noise-absorbing, the property being particularly important in the case of mechanically moving parts in electronic devices, such as turntables, tapes and video devices, etc.
  • Grease preparations of this type are suitable for rolling bearings that have to withstand temperatures up to 180 ° C.
  • Such greases correspond to NLGI class 3 to 0 according to DIN ISO 2137.
  • the preferred base oils have a viscosity of 18 to 400 mm2 / s at 40 ° C.
  • Lubricants are preferably used in which the base oil is a C8 to C13 alcohol ester of phthalic acid, trimellitic acid or pyromellitic acid and the thickener is the reaction product of a methylene-bis-phenyl isocyanate or tolylene diisocyanate such as a mixture of 2,4- and 2,6-tolylene diisocyanate, represents with a C6 to C22 alkylamine or amines or naphthylamine.
  • the base oil is a C8 to C13 alcohol ester of phthalic acid, trimellitic acid or pyromellitic acid
  • the thickener is the reaction product of a methylene-bis-phenyl isocyanate or tolylene diisocyanate such as a mixture of 2,4- and 2,6-tolylene diisocyanate, represents with a C6 to C22 alkylamine or amines or naphthylamine.
  • the additives used against corrosion, oxidation and for protection against metal influences which act as chelate compounds, radical scavengers, UV converters and the like, are known per se and are commercially available.
  • the noise test is carried out by means of a test arrangement which is particularly suitable for this purpose, a suitable roller bearing being run at speeds of 1800 rpm.
  • the noise is measured directly on the outer ring of the rolling bearing using an accelerometer.
  • the vibrations recorded by the device are divided into three frequency ranges (low 50 - 300 Hz, medium 300 - 1800 Hz, high 1800 - 10000 Hz). In addition, maximum peaks are also registered.
  • the measured values are evaluated by a computer and referenced to the values measured with a reference lubricant.
  • the lubricant preparation according to the invention shows values in all areas of around 100% compared to a lubricant made from mineral oil and polyurea, which shows peak values of up to 368%.
  • the fat is homogenized by repeated rolling on a three-roll mill. This homogenization process is of particular importance for the noise behavior. In this way, a grease of NLGI class 0 according to DIN ISO 2137 is obtained.
  • This fat obtained in this way is tested on a noise test bench, which differentiates according to three frequency bands and maximum peaks.
  • a significant noise reduction was measured compared to a commercially available lubricating grease made from a mineral oil and a long-chain, branched polyurea compound.
  • Example 2 In 839.5 g of an ester oil consisting of an ester of pyromellitic acid and an isomeric C-8 alcohol, diisocyanate and amine are reacted as in Example 2. Implementation, additives and homogenization are carried out in the same way as in Example 1.

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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)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Steroid Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Abstract

A lubricating grease compound formed of a basic oil and a lower proportion of a thickening agent which is a polyurea (polycarbamide) compound as well as the usual additives, in which the base oil is an ester of an aromatic di-, tri-, or tetra-carboxylic acid with one or more C7-C18-alkanols and the thickening agent is the reaction product of a compound of the general formulaA(B)n(I)with an amine of the general formula H2N-R (II), wherein A=CH4-n, B=aromatic mono- or di-isocyanate residue, n=1-3, and R=an alkyl or an alkenyl residue with 8 to 22-C-atoms or an aryl residue with 6 to 10-C-atoms, and in which the mixture of the basic oil and the thickening agent has a consistency with a penetration of 220-385, 0.1 mm.

Description

Die Erfindung betrifft eine Schmierfettzusammensetzung aus einem Grundöl und einem kleineren Anteil eines Verdickungsmittels auf Basis einer Polyharnstoffverbindung, sowie üblichen Additiven.The invention relates to a grease composition comprising a base oil and a smaller proportion of a thickener based on a polyurea compound, and also conventional additives.

Derartige Schmiermittel sind z.B. aus der DE-OS 33 03 442 bekannt, wobei das Grundöl ein Mineral- oder Syntheseöl, wie ein naphthenbasisches oder paraffinbasisches Grundöl und das Verdickungsmittel das Reaktionsprodukt eines Isocyanats mit mindestens 3 Isocyanatgruppen im Molekül mit einem langkettigen aliphatischen Monoamin, vorzugsweise mit 16 bis 24 C-Atomen ist.Such lubricants are e.g. known from DE-OS 33 03 442, wherein the base oil is a mineral or synthetic oil, such as a naphthenic or paraffin-based base oil and the thickener is the reaction product of an isocyanate with at least 3 isocyanate groups in the molecule with a long-chain aliphatic monoamine, preferably with 16 to 24 C. -Atoms is.

Solche Schmierfettzusammensetzungen sind für Dauereinsatztemperaturen von 150 - 160 °C brauchbar.Such grease compositions can be used for continuous operating temperatures of 150-160 ° C.

Ähnliche Zusammensetzungen, die jedoch einen Ester als Grundöl enthalten und eine Konsistenz mit einer Penetration von 220 bis 385 bei 0,1mm aufweisen und wobei das Verdickungsmittel aus einem aromatischen Mono- oder Diisocyanat und einem Alkyl-, Alkenylrest mit 8 bis 22 C-Atomen oder Arylrest mit 6 bis 10 C-Atomen zusammengesetzt ist, wurde als besonders geräuschdämpfend aufgefunden, wobei die Eigenschaft insbesondere bei mechanisch bewegten Teilen in elektronischen Apparaten, wie Plattenspielern, Tonband- und Videogeräten usw. von Bedeutung ist. Insbesondere sind derartige Schmierfettzubereitungen bei Wälzlagern geeignet, die Temperaturen bis 180 °C auszuhalten haben.Similar compositions which, however, contain an ester as the base oil and have a consistency with a penetration of 220 to 385 at 0.1 mm and wherein the thickener consists of an aromatic mono- or diisocyanate and an alkyl, alkenyl radical with 8 to 22 carbon atoms or Aryl radical composed of 6 to 10 carbon atoms has been found to be particularly noise-absorbing, the property being particularly important in the case of mechanically moving parts in electronic devices, such as turntables, tapes and video devices, etc. In particular Grease preparations of this type are suitable for rolling bearings that have to withstand temperatures up to 180 ° C.

Die erfindungsgemäße Schmierfettzusammensetzung aus einem Grundöl und einem kleineren Anteil eines Verdickungsmittels auf Basis einer Polyharnstoffverbindung, die das Reaktionsprodukt einer Verbindung der allgemeinen Formel

        A(B)n


und einem Amin der allgemeinen Formel H₂N-R ist, wobei in den Formeln
A = CH4-n
b = aromatischer Mono- oder Diisocyanatrest
n = 1 - 3
R = Alkyl- oder Alkenylrest mit 8 bis 22-C-Atomen oder Arylrest mit 6 bis 10-C-Atomen ist
sowie üblichen Additiven, ist dadurch gekennzeichnet, daß das Grundöl ein Ester einer aromatischen Di-, Tri- oder Tetracarbonsäure mit einem oder mehreren C₇-C₁₈-Alkanolen
ist, und das Gemisch aus Grundöl und Verdikkungsmittel eine Konsistenz mit einer Penetration von 220 - 385, 0,1mm aufweist.The grease composition according to the invention consisting of a base oil and a smaller proportion of a thickener based on a polyurea compound, which is the reaction product of a compound of the general formula

A (B) n


and an amine of the general formula H₂N-R, wherein in the formulas
A = CH 4-n
b = aromatic mono- or diisocyanate residue
n = 1-3
R = alkyl or alkenyl radical having 8 to 22 carbon atoms or aryl radical having 6 to 10 carbon atoms
and conventional additives, is characterized in that the base oil is an ester of an aromatic di-, tri- or tetracarboxylic acid with one or more C₇-C₁ Alk alkanols
is, and the mixture of base oil and thickener has a consistency with a penetration of 220 - 385, 0.1mm.

Solche Schmierfette entsprechen der NLGI-Klasse 3 bis 0 nach DIN ISO 2137. Die bevorzugten Grundöle haben eine Viskosität von 18 bis 400 mm²/s bei 40 °C.Such greases correspond to NLGI class 3 to 0 according to DIN ISO 2137. The preferred base oils have a viscosity of 18 to 400 mm² / s at 40 ° C.

Bevorzugt werden Schmierstoffe eingesetzt, bei denen das Grundöl ein C₈ bis C₁₃-Alkoholester der Phthalsäure, Trimellithsäure oder Pyromellithsäure ist und das Verdickungsmittel das Umsetzungsprodukt eines Methylen-bis-phenylisocyanats oder Toluylendiisocyanats wie einem Gemisch von 2,4- und 2,6-Toluylendiisocyanat, mit einem C₆ bis C₂₂-Alkylamin oder Aminen bzw. Naphtylamin darstellt.Lubricants are preferably used in which the base oil is a C₈ to C₁₃ alcohol ester of phthalic acid, trimellitic acid or pyromellitic acid and the thickener is the reaction product of a methylene-bis-phenyl isocyanate or tolylene diisocyanate such as a mixture of 2,4- and 2,6-tolylene diisocyanate, represents with a C₆ to C₂₂ alkylamine or amines or naphthylamine.

Die verwendeten Additive gegen Korrosion, Oxydation und zum Schutz gegen Metalleinflüsse, die als Chelatverbindungen, Radikalfänger, UV-Umwandler und dergleichen wirken, sind an sich bekannt und handelsüblich.The additives used against corrosion, oxidation and for protection against metal influences, which act as chelate compounds, radical scavengers, UV converters and the like, are known per se and are commercially available.

Die Geräuschprüfung wird mittels einer besonders hierfür geeigneten Versuchsanordnung durchgeführt, wobei ein geeignetes Wälzlager mit Umdrehungszahlen von 1800 min⁻¹ laufen gelassen wird.The noise test is carried out by means of a test arrangement which is particularly suitable for this purpose, a suitable roller bearing being run at speeds of 1800 rpm.

Das Geräusch wird mittels eines Beschleunigungsaufnehmers direkt am Außenring des Wälzlagers gemessen. Die vom Gerät aufgezeichneten Schwingungen werden in drei Frequenzbereiche (low 50 - 300 Hz, medium 300 - 1800 Hz, high 1800 - 10000 Hz) aufgeteilt. Zusätzlich werden auch maximale Spitzenwerte (peaks) registriert.The noise is measured directly on the outer ring of the rolling bearing using an accelerometer. The vibrations recorded by the device are divided into three frequency ranges (low 50 - 300 Hz, medium 300 - 1800 Hz, high 1800 - 10000 Hz). In addition, maximum peaks are also registered.

Die gemessenen Werte werden von einem Rechner ausgewertet und auf die Werte, welche mit einem Referenz-Schmiermittel gemessen wurden, bezogen.The measured values are evaluated by a computer and referenced to the values measured with a reference lubricant.

Man erhält so Relativwerte, im Vergleich zum Referenzwert, welcher gleich 100 % festgelegt ist. Die erfindungsgemäße Schmiermittelzubereitung zeigt hier in allen Bereichen Werte um 100 % gegenüber einem Schmiermittel aus Mineralöl und Polyharnstoff, welches Spitzenwerte bis 368 % zeigt.Relative values are thus obtained, in comparison to the reference value, which is fixed at 100%. The lubricant preparation according to the invention shows values in all areas of around 100% compared to a lubricant made from mineral oil and polyurea, which shows peak values of up to 368%.

Die Erfindung wird durch die folgenden Beispiele erläutert:The invention is illustrated by the following examples:

Beispiel 1:Example 1:

In 789,5 g eines Esteröles, bestehend aus einem Ester der Phthalsäure und einem isomeren C₁₃-Alkohol, werden 97 g eines Gemisches aus 2,4- und 2,6-Toluylendiisocyanat
(A = CH₃, n = 1, B = aromatisches Diisocyanat)
mit 103 g Anilin (R = Arylrest mit 6-C-Atomen) umgesetzt. Nachdem die exotherme Reaktion abgeschlossen ist, wird der Sud auf 160 °C aufgeheizt. Während des Abkühlens werden 5 g eines handelsüblichen Antioxidants, 5 g eines handelsüblichen Korrosionsschutzmittels und 0,5 g eines handelsüblichen Metalldesaktivators zugesetzt.In 789.5 g of an ester oil consisting of an ester of phthalic acid and an isomeric C₁₃ alcohol, 97 g of a mixture of 2,4- and 2,6-tolylene diisocyanate
(A = CH₃, n = 1, B = aromatic diisocyanate)
reacted with 103 g of aniline (R = aryl radical with 6 C atoms). After the exothermic reaction is complete, the brew is heated to 160 ° C. While cooling, 5 g of a commercially available antioxidant, 5 g of a commercially available anticorrosive agent and 0.5 g of a commercially available metal deactivator are added.

Der Fettsud wird homogenisiert durch mehrmaliges Walzen auf einem Dreiwalzenstuhl. Diesem Homogenisierungsvorgang kommt besondere Bedeutung für das Geräuschverhalten zu. Man erhält auf diese Weise ein Fett der NLGI-Klasse 0 nach DIN ISO 2137.The fat is homogenized by repeated rolling on a three-roll mill. This homogenization process is of particular importance for the noise behavior. In this way, a grease of NLGI class 0 according to DIN ISO 2137 is obtained.

Dieses so erhaltene Fett wird auf einem Geräuschprüfstand, welcher nach drei Frequenzbändern sowie nach maximalen Peaks differenziert, geprüft.This fat obtained in this way is tested on a noise test bench, which differentiates according to three frequency bands and maximum peaks.

Gegenüber einem handelsüblichen Schmierfett aus einem Mineralöl und einer langkettigen, verzweigten Polyharnstoffverbindung wurde eine deutliche Geräuschverminderung gemessen.A significant noise reduction was measured compared to a commercially available lubricating grease made from a mineral oil and a long-chain, branched polyurea compound.

Beispiel 2:Example 2:

In 839,5 g eines Esteröles, bestehend aus einem Ester der Trimellithsäure und einem Alkoholgemisch aus C₈ und C₁₀-Alkoholen, werden 74,5 g Diphenylmethan diisocyanat
(A = CH₂, n = 2, B = aromatisches Monoisocyanat)
mit 75,5 g Octylamin (R = n-Octyl) in gleicher Weise wie in Beipiel 1 umgesetzt, mit Zusätzen versehen und homogenisiert.In 839.5 g of an ester oil consisting of an ester of trimellitic acid and an alcohol mixture of C₈ and C₁₀ alcohols, 74.5 g of diphenylmethane diisocyanate
(A = CH₂, n = 2, B = aromatic monoisocyanate)
reacted with 75.5 g of octylamine (R = n-octyl) in the same manner as in Example 1, provided with additives and homogenized.

Man erhält auf diese Weise ein Fett der NLGI-Klasse 1 nach DIN ISO 2137.In this way, a grease of NLGI class 1 according to DIN ISO 2137 is obtained.

Das so erhaltene Fett wird wie in Beispiel 1 geprüft und eine deutliche Geräuschverminderung gegenüber dem handelsüblichen Schmierfett gefunden.The grease obtained in this way is tested as in Example 1 and a clear reduction in noise is found compared to the commercially available grease.

Beispiel 3:Example 3:

In 839,5 g eines Esteröles, bestehend aus einem Ester der Pyromellithsäure und einem isomeren C-8-Alkohol, werden Diisocyanat und Amin wie in Beispiel 2 umgesetzt. Umsetzung, Additivierung und Homogenisierung erfolgen in gleicher Weise wie in Beispiel 1.In 839.5 g of an ester oil consisting of an ester of pyromellitic acid and an isomeric C-8 alcohol, diisocyanate and amine are reacted as in Example 2. Implementation, additives and homogenization are carried out in the same way as in Example 1.

Man erhält auf diese Weise ein Fett der NLGI-Klasse 1 nach DIN ISO 2137.In this way, a grease of NLGI class 1 according to DIN ISO 2137 is obtained.

Das so erhaltene Fett wird wie in Beispiel 1 geprüft und eine deutliche Geräuschverminderung gegenüber dem handelsüblichen Schmierfett gefunden.The grease obtained in this way is tested as in Example 1 and a clear reduction in noise is found compared to the commercially available grease.

Die zahlenmäßige Auswertung der Beispiele geht aus den beigefügten Zeichnungen und Tabellen hervor.The numerical evaluation of the examples can be seen from the attached drawings and tables.

Es bedeuten

Fig. 1 -
die graphische Darstellung des Geräuschverhaltens der Schmierstoffe der Beispiele 1 bis 3 in je 3 Frequenzbereichen (1) mit maximalen Spitzenwerten (2) bzw. (3).
Fig. 2 -
die graphische Darstellung des Geräuschverhaltens eines Vergleichsschmierstoffs nach dem Stand der Technik in drei Frequenzbereichen (1), (2), sowie mit dem maximalen Spitzenwert (4).
Tabelle 1 -
die zahlenmäßige statistische Auswertung der Schmierstoffgeräuschprüfung gemäß Fig. 1 für Beispiele 1 bis 3 und
Tabelle 2 -
die gleiche Auswertung für das Vergleichsfett gemäß Fig. 2.
Mean it
Fig. 1 -
the graphical representation of the noise behavior of the lubricants of Examples 1 to 3 in 3 frequency ranges (1) with maximum peak values (2) and (3).
Fig. 2 -
the graphic representation of the noise behavior of a comparison lubricant according to the prior art in three frequency ranges (1), (2), and with the maximum peak value (4).
Table 1 -
the numerical statistical evaluation of the lubricant noise test according to FIG. 1 for examples 1 to 3 and
Table 2 -
the same evaluation for the comparison fat according to FIG. 2.

Claims (2)

  1. A lubricating grease compound formed of a basic oil and a lower
    proportion of a thickening agent including a polyurea (polycarbamide) compound and the usual additives, characterised in that the base oil is an ester of an aromatic di- tri- or tetracarboxylic acid with one or more C₇-C₁₈-alkanols is the reaction product of a compound of the general formula

            A(B)n   (I)

    with an amine of the general formula H₂N-R (II), in which
    A = CH₄-n
    B = aromatic mono- or di-isocyanate residue,
    n = 1 - 3,
    R = alkyl or alkenyl residue with 8 to 22-C-atoms or an aryl residue with 6 to 10-C-atoms;
    and the mixture of the basic oil and the thickening agent has a consistency with a penetration of 220 - 385, 0.1mm.
  2. A lubricating grease compound in accordance with Claim 1, characterised in that B in Formula 1 is a 2,4 and or 2,6 toluylene diisocyanate residue.
EP90908203A 1989-06-02 1990-05-30 Lubricating grease composition Expired - Lifetime EP0433405B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3918107A DE3918107A1 (en) 1989-06-02 1989-06-02 LUBRICATING GREASE COMPOSITION
DE3918107 1989-06-02

Publications (2)

Publication Number Publication Date
EP0433405A1 EP0433405A1 (en) 1991-06-26
EP0433405B1 true EP0433405B1 (en) 1993-08-04

Family

ID=6381984

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Application Number Title Priority Date Filing Date
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US (1) US6063743A (en)
EP (1) EP0433405B1 (en)
JP (1) JPH0745677B2 (en)
KR (1) KR930007894B1 (en)
AT (1) ATE92518T1 (en)
AU (1) AU627892B2 (en)
BG (1) BG60784B1 (en)
BR (1) BR9006784A (en)
CA (1) CA2033074C (en)
DE (1) DE3918107A1 (en)
DK (1) DK0433405T3 (en)
ES (2) ES2020147A6 (en)
FI (1) FI910504A0 (en)
HU (1) HU211182B (en)
NO (1) NO910365L (en)
RO (1) RO109670B1 (en)
RU (1) RU1836410C (en)
WO (1) WO1990015125A1 (en)

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JP3330755B2 (en) * 1994-10-17 2002-09-30 日本精工株式会社 Grease composition
DE19622906A1 (en) * 1996-06-07 1997-12-11 Klueber Lubrication Grease compositions
DE19730318C2 (en) * 1997-07-15 2002-04-04 Klueber Lubrication Grease composition, process for making the same and their use
GB9803367D0 (en) 1998-02-17 1998-04-15 Exxon Research Engineering Co Lubricating grease composition and preparation
US6417143B1 (en) * 1998-10-30 2002-07-09 Ntn Corporation Rolling bearings and greases for the same
JP4327929B2 (en) * 1999-03-03 2009-09-09 協同油脂株式会社 Manufacturing method of urea grease with excellent noise reduction
AU2001271634B2 (en) * 2000-07-11 2005-04-07 Exxonmobil Research And Engineering Company Lubricating grease composition and preparation
US6916768B2 (en) * 2003-02-20 2005-07-12 Chevron U.S.A. Inc. Low noise grease gelling agents
US9012384B2 (en) 2010-07-30 2015-04-21 Chevron U.S.A. Inc. Method of preparing greases
US8889604B2 (en) 2010-07-30 2014-11-18 Chevron U.S.A. Inc. Method of preparing greases
RU2476588C2 (en) * 2011-02-14 2013-02-27 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Grease for high-speed radial-axial bearings for gyroscopes and synchronous gyromotors
DE102020112993A1 (en) 2020-05-13 2021-11-18 Klüber Lubrication München Se & Co. Kg Lithium complex hybrid grease
US20230313066A1 (en) * 2020-07-22 2023-10-05 Jtekt Corporation Raw material of grease, method for producing raw material of grease, method for producing grease, and grease

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Also Published As

Publication number Publication date
NO910365D0 (en) 1991-01-31
US6063743A (en) 2000-05-16
HU211182B (en) 1995-11-28
EP0433405A1 (en) 1991-06-26
RU1836410C (en) 1993-08-23
CA2033074A1 (en) 1990-12-03
BR9006784A (en) 1991-08-06
FI910504A0 (en) 1991-02-01
KR920701405A (en) 1992-08-11
ES2020147A6 (en) 1991-07-16
DK0433405T3 (en) 1993-12-27
CA2033074C (en) 1994-02-15
AU627892B2 (en) 1992-09-03
JPH0745677B2 (en) 1995-05-17
HUT57823A (en) 1991-12-30
AU5723290A (en) 1991-01-07
JPH03504397A (en) 1991-09-26
KR930007894B1 (en) 1993-08-21
ATE92518T1 (en) 1993-08-15
BG60784B1 (en) 1996-03-29
NO910365L (en) 1991-01-31
BG93644A (en) 1993-12-24
DE3918107A1 (en) 1990-12-06
HU904230D0 (en) 1991-07-29
WO1990015125A1 (en) 1990-12-13
ES2044594T3 (en) 1994-01-01
RO109670B1 (en) 1995-04-28

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