ES2247671T3 - COMPOSITION OF LUBRICANT FAT. - Google Patents

COMPOSITION OF LUBRICANT FAT.

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Publication number
ES2247671T3
ES2247671T3 ES98850198T ES98850198T ES2247671T3 ES 2247671 T3 ES2247671 T3 ES 2247671T3 ES 98850198 T ES98850198 T ES 98850198T ES 98850198 T ES98850198 T ES 98850198T ES 2247671 T3 ES2247671 T3 ES 2247671T3
Authority
ES
Spain
Prior art keywords
lubricating grease
component
grease composition
oil
composition
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 - Lifetime
Application number
ES98850198T
Other languages
Spanish (es)
Inventor
Mehdi Fathi-Najafi
Tim Hutchings
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AXEL CHRISTIERNSSON AB
Original Assignee
AXEL CHRISTIERNSSON AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AXEL CHRISTIERNSSON AB filed Critical AXEL CHRISTIERNSSON AB
Application granted granted Critical
Publication of ES2247671T3 publication Critical patent/ES2247671T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C10M169/06—Mixtures of thickeners and additives
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C10M119/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • 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
    • C10M119/04—Lubricating compositions characterised by the thickener being a macromolecular compound containing oxygen
    • C10M119/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M119/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
    • C—CHEMISTRY; METALLURGY
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    • 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
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/02—Polyethylene
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    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/06—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing butene
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    • C10M143/10—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing aromatic monomer, e.g. styrene
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    • C10M145/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
    • C10M145/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate monocarboxylic
    • C10M145/14—Acrylate; Methacrylate
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    • C10M149/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M149/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amido or imido group
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    • C10M2217/043—Mannich bases
    • 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
    • C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/06—Instruments or other precision apparatus, e.g. damping fluids

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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)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention relates to a lubricating grease composition and to an advantageous use of such a lubricating grease composition. The lubricating grease according to the invention comprises at least one polyolefin component, at least one base or component and, in addition, at least one rubber component. The properties of the lubricating grease composition according to the invention, for example with regard to oil bleeding, adhesion properties, working life, noise properties and/or mechanical stability, can be regulated by its composition and the rubber component or components. The lubricating grease composition according to the invention can be used for several different applications in which lubricating grease is normally used, such as for different types of bearing and other mechanical components such as couplings, toothed transmission gears and the like. The lubricating grease composition according to the invention can also be used, for example, for lubricating chutes and instruments.

Description

Composición de grasa lubricante.Composition of lubricating grease.

Sector de la técnicaTechnical sector

El presente invento hace referencia a una composición de grasa lubricante y a un empleo provechoso de tal composición de grasa lubricante.The present invention refers to a composition of lubricating grease and a profitable use of such lubricating grease composition.

La composición de grasa lubricante de acuerdo con el invento comprende por lo menos un componente de poliolefina, por lo menos un componente basado en aceite y, además de ello, por lo menos un componente de caucho.The lubricating grease composition according to the invention comprises at least one polyolefin component, by at least one oil-based component and, in addition to that, so less a rubber component.

El presente invento permite dirigir y controlar las propiedades de la composición de grasa lubricante tales como la purga de aceite, la adhesión y la cohesión. También pueden mejorarse la vida útil, las propiedades de ruido y/o la estabilidad mecánica.The present invention allows directing and controlling the properties of the lubricating grease composition such as the Oil purge, adhesion and cohesion. Can also be improved life, noise properties and / or stability mechanics.

La composición de grasa lubricante de acuerdo con el invento puede utilizarse para varias aplicaciones en las que se emplea normalmente grasa lubricante, por ejemplo para lubricar diferentes tipos de cojinetes y otros componentes mecánicos, tales como acoplamiento, engranajes dentados de transmisión y similares. La composición de grasa lubricante de acuerdo con el invento puede también utilizarse, por ejemplo para lubricar tolvas e instrumentos.The lubricating grease composition according to The invention can be used for several applications in which normally uses lubricating grease, for example to lubricate different types of bearings and other mechanical components, such as coupling, gear gears and the like. The lubricating grease composition according to the invention can also used, for example to lubricate hoppers and instruments.

Antecedentes técnicosTechnical background

Durante largo tiempo se ha conocido un gran número de composiciones de grasa lubricante para utilizar en conexión con la lubrificación de cojinetes y similares, y también se han conocido anteriormente diferentes espesadores poliméricos o aportadores de consistencia.For a long time a great has been known number of lubricating grease compositions to use in connection with the lubrication of bearings and the like, and also have previously known different polymeric thickeners or consistency contributors.

Así pues, la especificación de patente US-3.850.828, por ejemplo, describe una composición de grasa lubricante que se espesa con una mezcla polimérica que comprende un polietileno y un polipropileno atáctico.So, the patent specification US 3,850,828, for example, describes a composition of lubricating grease that thickens with a polymeric mixture that It comprises a polyethylene and an atactic polypropylene.

La especificación de patente US-2.917.458 describe una composición grasa que comprende una base de polipropileno amorfo soluble al aceite a la que se añade del 2 al 5% en peso de un polipropileno isotáctico y del 5 al 35% en peso de un espesador jabón-sal.Patent specification US 2,917,458 describes a fatty composition that It comprises a base of amorphous oil-soluble amorphous polypropylene which is added from 2 to 5% by weight of an isotactic polypropylene and 5 to 35% by weight of a soap-salt thickener.

Además, la especificación de patente US-3.290.244 describe una composición de grasa que comprende un aceite lubricante mineral, un producto espesador y un homopolimero atáctico de polipropileno soluble al aceite o un copolimero atáctico de etileno y propileno soluble al aceite.In addition, the patent specification US 3,290,244 describes a fat composition that it comprises a mineral lubricating oil, a thickener product and a atactic homopolymer of oil soluble polypropylene or a atactic copolymer of ethylene and oil soluble propylene.

En ninguna de las especificaciones de patente antes mencionadas, es decir las US-A-3.850.828, US-2.917.458 ó US-3.290.244, aparece mención alguna sobre las propiedades que se pueden obtener utilizando la composición de grasa lubricante que describen, por ejemplo con respecto a la purga del aceite.In none of the patent specifications mentioned above, that is the US-A-3,850,828, US-2,917,458 or US-3,290,244, appears any mention about the properties that can be obtained using the lubricating grease composition they describe, by example regarding oil purge.

En el presente documento, se entiende como purga de aceite la separación de los diferentes componentes presentes en la grasa lubricante que puede producirse durante el uso. Tal separación puede consistir, por ejemplo, en una base de aceite, que se separa de la estructura de grasa lubricante restante. En muchas aplicaciones, es deseable controlar el grado de purga de aceite, es decir los diferentes componentes de una grasa lubricante que deben permanecer en una mezcla estable a fin de garantizar las duraciones de trabajo de la grasa lubricante y del componente móvil que se lubrifica sean lo más largas posibles.In this document, it is understood as a purge of oil the separation of the different components present in the lubricating grease that can be produced during use. Such separation may consist, for example, of an oil base, which It is separated from the remaining lubricating grease structure. In many applications, it is desirable to control the degree of oil purge, it is say the different components of a lubricating grease that should remain in a stable mixture in order to guarantee durations of the lubricating grease and the mobile component Lubricate as long as possible.

Existan ciertas aplicaciones en que se desea un grado relativamente alto de purga de aceite, por ejemplo con respecto a composiciones de grasa lubricante que deben utilizarse en climas muy fríos. En tales casos, puede ser deseable aceite lubricante de viscosidad relativamente baja para separarlo de la grasa lubricante a fin de garantizar que se obtenga la lubrificación incluso en condiciones en que exista frío severo.There are certain applications where you want a relatively high degree of oil purge, for example with regarding lubricating grease compositions that should be used in very cold climates. In such cases, oil may be desirable. lubricant of relatively low viscosity to separate it from the lubricating grease to ensure that lubrication is obtained even in conditions where there is severe cold.

La especificación de patente US-3.392.119 describe una grasa que comprende un aceite mineral blanco que ha sido espesado empleado un copolimero de etileno y un homopolimero de polipropileno. Esta especificación de patente menciona que el uso de aceite mineral blanco, junto con un polímero de etileno y un polímero de polipropileno, da como resultado grasas lubricantes que presentan menor purga de aceite.Patent specification US 3,392,119 describes a fat comprising a white mineral oil that has been thickened employed a copolymer of ethylene and a polypropylene homopolymer. This specification of patent mentions that the use of white mineral oil, along with a ethylene polymer and a polypropylene polymer, gives as result lubricating greases that present less purge of oil.

La especificación de patente US-4.448.700 describe una composición lubricante que posee propiedades de liberación de aceite incorporadas y que comprende polipropileno que tiene un bajo índice de fusión-flujo y un aceite lubricante sintético basado en uno o más ésteres neopentilpoliol cuyos residuos ácidos tienen, de media, cadenas relativamente cortas. Se ha comprobado que la composición descrita puede conformarse, y funciona, como un componente mecánico.Patent specification US 4,448,700 describes a lubricating composition that it has built-in oil release properties and that it comprises polypropylene that has a low index of melt-flow and a synthetic lubricating oil based in one or more neopentol polyol esters whose acid residues have, on average, relatively short chains. It has been proven that the described composition can conform, and it works, as a mechanical component

La patente EP-0.700.986 A2 describe un espesador polimérico para composiciones de grasa lubricante en que el espesador comprende una mezcla de copolimeros o homopolimeros de polipropileno que tiene un alto peso molecular y un copolimero o homopolimero de propileno que tiene un bajo peso molecular. Además, la patente EP-0.700.986 A2 describe una composición de grasa lubricante que comprende un aceite lubrificante y el antes citado espesador polimérico, y también un procedimiento para producir dicha composición de grasa lubricante. La patente EP-0.700.986 A2 describe asimismo el uso de un espesador polimérico del tipo antes mencionado en asociación con composiciones que producen grasa lubricante. En este contexto, las composiciones de grasa lubricante que se describen en la patente EP-0.700.986 A2 se establecen para generar propiedades mejoradas de purga de aceite a baja temperatura, mayor vida dura, mejor estabilidad mecánica y mejores propiedades de ruido.EP-0.700.986 A2 describes a polymeric thickener for grease compositions lubricant in which the thickener comprises a mixture of copolymers or polypropylene homopolymers having a high molecular weight and a propylene copolymer or homopolymer having a low weight molecular. In addition, patent EP-0.700.986 A2 describes a lubricating grease composition comprising an oil lubricant and the aforementioned polymeric thickener, and also a process for producing said lubricating grease composition. EP-0.700.986 A2 also describes the use of a polymeric thickener of the aforementioned type in association with compositions that produce lubricating grease. In this context, the lubricating grease compositions described in the patent EP-0.700.986 A2 are set to generate Enhanced low temperature oil purge properties, higher hard life, better mechanical stability and better properties of noise.

La patente WO 94/08710 describe otro tipo de composición lubricante que consiste en un gel de aceite que se produce para usar como relleno dentro de cables ópticos. En este contexto, el material de relleno del cable comprende principalmente un complejo de jabón de aluminio, un aceite básico y un componente de caucho. Existen muy especiales peticiones de rellenos para el objeto propuesto. Por tanto, el relleno debe ser apto para actuar como un medio lubrificante y tampón entre los componentes individuales contenidos en el cable. Además, no existe un límite en la elección de los componentes que pueden incluirse en el relleno dado que dichos componentes no deben incluir, por ejemplo, aceites minerales u otros materiales que puedan interactuar con el propio material del cable. Además, se espera que el cable tenga una muy larga duración y que pueda permanecer enterrado en el suelo durante casi 40 años. Por consiguiente es importante que el relleno también tenga una larga duración que presente dicha clase de valor. Por tanto, es de gran importancia que la tendencia del material de relleno a separar sea lo más baja posible. Por otro lado, el poder lubricante del material de relleno no necesita ser particularmente grande, dado que las fuerzas que pueden surgir entre los componentes individuales en el cable son relativamente pequeñas. Por consiguiente, una composición de acuerdo con la patente WO 94/08710 no funciona especialmente bien para objetos lubrificantes que requieren la lubricación de cojinetes y/o entre superficies metálicas.WO 94/08710 describes another type of lubricating composition consisting of an oil gel that Produces for use as filler inside optical cables. In this context, the cable filling material mainly comprises a complex of aluminum soap, a basic oil and a component of rubber. There are very special requests for fillings for proposed object. Therefore, the filling must be able to act as a lubricating medium and buffer between the components individual contained in the cable. In addition, there is no limit on the choice of components that can be included in the filling since such components should not include, for example, oils minerals or other materials that can interact with one's own cable material. In addition, the cable is expected to have a very long lasting and that you can remain buried in the ground for almost 40 years. Therefore it is important that the filling also It has a long duration that presents this kind of value. By therefore, it is of great importance that the tendency of the material of Fill to separate be as low as possible. On the other hand the power filler material lubricant need not be particularly large, given that the forces that may arise between the components Individuals in the cable are relatively small. By consequently, a composition according to WO 94/08710 it does not work especially well for lubricating objects that require lubrication of bearings and / or between surfaces metallic

Puede verse que las composiciones de grasa lubricante antes conocidas presentan ciertos inconvenientes. En esta conexión, se ha puesto de manifiesto que existe una especial demanda para mejorar con respecto a las propiedades de purga de aceite, la vida útil y la estabilidad mecánica. Así pues, las composiciones de grasas lubricantes antes conocidas pueden resultar mecánicamente inestables en ciertas aplicaciones. Además, con anterioridad generalmente ha sido difícil regular las propiedades de purga de aceite y separación de una composición de grasa lubricante del modo requerido por la aplicación lubricante en particular sin alterar al mismo tiempo las otras propiedades de la composición de grasa lubricante, por ejemplo en propiedades de adhesión, duración, propiedades de ruido o estabilidad mecánica, en una dirección no deseada.It can be seen that fat compositions Lubricants known above have certain drawbacks. In this connection, it has been revealed that there is a special demand to improve with respect to the oil purge properties, the Life span and mechanical stability. So, the compositions of previously known lubricating greases can result mechanically unstable in certain applications. In addition, previously it has generally been difficult to regulate the purge properties of oil and separation of a lubricating grease composition of the mode required by the particular lubricant application without altering the same time the other properties of the fat composition lubricant, for example in adhesion properties, duration, noise properties or mechanical stability, in one direction not desired.

Relato del inventoStory of the invention

Por consiguiente, el objeto primario del presente invento es proporcionar una composición de grasa lubricante que resuelva el problema antes mencionado de insuficiente estabilidad mecánica y que, además, permita regular y controlar las propiedades de purga, las propiedades de adhesión y cohesión, y para lograr una mayor duración y estabilidad mecánica perfeccionadas y propiedades de ruido.Therefore, the primary object of the present invention is to provide a lubricating grease composition that solve the aforementioned problem of insufficient stability mechanical and that, in addition, allows to regulate and control the properties purge, adhesion and cohesion properties, and to achieve a improved durability and mechanical stability and properties of noise

Este objeto del presente invento se consigue de acuerdo con la consiguiente reivindicación 1.This object of the present invention is achieved from according to the consequent claim 1.

Otro objeto del presente invento es indicar ventajosas áreas de aplicación para la composición de grasa lubricante de acuerdo con el invento.Another object of the present invention is to indicate advantageous areas of application for grease composition lubricant according to the invention.

Se consigue este objeto del presente invento utilizando una composición de grasa lubricante de acuerdo con el invento para lubrificar cojinetes, acoplamientos, engranajes dentados de transmisión, tolvas e instrumentos, eligiéndose la composición de grasa lubricante, en asociación con el uso, en base de las propiedades seleccionadas del grupo de propiedades de purga de aceite, propiedades de adhesión, vida útil, estabilidad mecánica y propiedades de ruido.This object of the present invention is achieved. using a lubricating grease composition according to the invention to lubricate bearings, couplings, gears gear teeth, hoppers and instruments, choosing the lubricating grease composition, in association with use, based of the properties selected from the purge property group oil, adhesion properties, service life, mechanical stability and noise properties.

Naturalmente, una propiedad muy importante de una grasa lubricante es su vida útil. Una grasa lubricante que tiene una larga vida útil ocasiona pocos paros y requiere menos trabajo de mantenimiento. Por consiguiente es muy ventajoso poder ofrecer una grasa lubricante que tenga una mejor vida útil.Naturally, a very important property of a Lubricating grease is its shelf life. A lubricating grease that has a long service life causes few stops and requires less work than maintenance. Therefore it is very advantageous to be able to offer a lubricating grease that has a better life.

Las propiedades de purga de aceite también son importantes. Una composición de grasa lubricante de acuerdo con el invento puede estar hecha a medida para el uso a que se destina. La purga de aceite puede regularse y controlarse seleccionado, entre sí, la cantidad y el tipo de componentes de caucho, poniendo de manifiesto que es posible producir una composición de grasa lubricante que desprenda una cantidad predeterminada de componente de aceite durante un periodo de tiempo relativamente largo. Como resultado de ello, también es posible obtener una lubrificación satisfactoria durante un largo periodo utilizando sustancialmente una inferior cantidad de grasa lubricante de la que antes era posible.The oil purge properties are also important. A lubricating grease composition according to the The invention may be tailored for the intended use. The Oil purge can be regulated and controlled selected, between Yes, the quantity and type of rubber components, putting manifest that it is possible to produce a fat composition lubricant that releases a predetermined amount of component of oil for a relatively long period of time. How As a result, it is also possible to obtain a lubrication satisfactory for a long period using substantially a lower amount of lubricating grease than it used to be possible.

El hecho de que una composición de grasa lubricante de acuerdo con el invento proporciona un entorno no iónico da como resultado la obtención de una mejor respuesta aditiva de la que era posible, por ejemplo, en composiciones a base de jabón.The fact that a fat composition lubricant according to the invention provides an environment not ionic results in obtaining a better additive response than was possible, for example, in compositions based on soap.

Descripción de las figurasDescription of the figures

Los dibujos adjuntos muestran, por medio de gráficos, algunas de las propiedades que pueden controlarse o mejorarse en composiciones de grasa lubricante de acuerdo con el invento, representando:The attached drawings show, by means of graphics, some of the properties that can be controlled or be improved in lubricating grease compositions according to the invention, representing:

La figura 1, la relación entre el tiempo y la temperatura de la separación de aceite en el caso de dos diferentes composiciones de grasa lubricante, A y B, de acuerdo con el invento, midiéndose la separación de aceite con el método de medición (modificado) FTM 791/391.2; yFigure 1, the relationship between time and oil separation temperature in the case of two different lubricating grease compositions, A and B, according to the invention, measuring the oil separation with the measurement method (modified) FTM 791 / 391.2; Y

La figura 2, la relación entre el tiempo y la temperatura de la separación de aceite en el caso de la antes mencionada composición de grasa lubricante A, de acuerdo con el invento, midiéndose la separación de aceite con el método de medición (modificado) DIN 51817.Figure 2, the relationship between time and oil separation temperature in the case of the before mentioned lubricating grease composition A, according to the invention, measuring the separation of oil with the method of measurement (modified) DIN 51817.

Formas de realización preferidasPreferred embodiments

Las composiciones de grasa lubricante de acuerdo con el invento consisten en por lo menos tres diferentes tipos de componentes que poseen diversas funciones, es decir, uno o más componente del tipo poliolefina, uno o más componentes del tipo básico de aceite y uno o más componentes de caucho.The lubricating grease compositions according with the invention consist of at least three different types of components that have different functions, that is, one or more polyolefin type component, one or more type components Basic oil and one or more rubber components.

En este contexto, la principal labor del componente o componentes de poliolefina es proporcionar una estructura de base química en forma de una red polimérica. Por ejemplo, el componente de poliolefina puede comprender polietileno o polipropileno o mezclas de dichas sustancias. El contenido del componente de poliolefina en composiciones de grasa lubricante de acuerdo con el invento está comprendida entre el 5 y el 30% en peso, y preferiblemente entre el 9 y el 15% en peso.In this context, the main work of the polyolefin component or components is to provide a Chemical base structure in the form of a polymeric network. By For example, the polyolefin component may comprise polyethylene or polypropylene or mixtures of said substances. The content of polyolefin component in lubricating grease compositions of according to the invention it is comprised between 5 and 30% by weight, and preferably between 9 and 15% by weight.

La misión del componente o componentes basados en aceite es ofrecer propiedades lubricantes o reductoras de fricción y también impartir cierta viscosidad a la composición de grasa lubricante, así como proporcionar la polaridad y solubilidad deseadas para componentes aditivos que se incluyan. El aceite básico puede seleccionarse a voluntad de aceites lubricantes disponibles, por ejemplo de aceites naturales tales como aceite mineral y diferentes tipos de aceite vegetal, o de aceites sintéticos tales como polialfaolefinas, ésteres o poliéteres. El contenido de aceite básico en la composición de grasa lubricante de acuerdo con el invento está comprendido entre el 60 y el 90% en peso, y preferiblemente entre el 75 y el 88% en peso.The mission of the component or components based on oil is to offer lubricating or friction reducing properties and also impart a certain viscosity to the fat composition lubricant, as well as provide polarity and solubility desired for additive components that are included. Basic oil can be selected at will of available lubricating oils, for example of natural oils such as mineral oil and different types of vegetable oil, or synthetic oils such as polyalphaolefins, esters or polyethers. Oil content Basic in the lubricating grease composition according to the invention is comprised between 60 and 90% by weight, and preferably between 75 and 88% by weight.

Las principales misiones del componente o componentes de caucho en la composición de grasa lubricante de acuerdo con el invento consisten en estabilizar la red formada por el antes mencionado componente de poliolefina, para suministrar una cierta elasticidad a la estructura de grasa lubricante, para impartir unas propiedades de relajación adecuadas y para aumentar la adhesión a las superficies que deben ser lubrificadas.The main missions of the component or rubber components in the lubricating grease composition of according to the invention consist in stabilizing the network formed by the aforementioned polyolefin component, to supply a certain elasticity to the structure of lubricating grease, to impart adequate relaxation properties and to increase the adhesion to surfaces that must be lubricated.

Además, el componente o componentes de caucho hace(n) posible regular la purga de aceite y propiedades de separación de la composición de grasa lubricante de acuerdo con el invento de la manea deseada por medio de la relación de mezcla y la elección del tipo de caucho. También se ha descubierto que las propiedades de cohesión de la composición de grasa lubricante terminada mejoran si el componente de caucho se añade a la composición desde el comienzo. Por otro lado, la adición del componente de caucho en una etapa posterior del procedimiento de producción da como resultado un aumento de las propiedades de adhesión.In addition, the rubber component or components makes it possible to regulate the oil purge and properties of separation of the lubricating grease composition according to the invention of the desired manner by means of the mixing ratio and the Rubber type choice. It has also been discovered that cohesion properties of the lubricating grease composition finished improve if the rubber component is added to the Composition from the beginning. On the other hand, the addition of rubber component at a later stage of the procedure production results in an increase in the properties of accession.

La adición del componente de caucho también hace posible mejorar o controlar la estabilidad mecánica, la cohesión, las propiedades de adhesión, la vida útil y las propiedades de ruido de la composición de grasa lubricante.The addition of the rubber component also makes possible to improve or control mechanical stability, cohesion, adhesion properties, service life and noise properties of the lubricating grease composition.

El término "componente de caucho" que se utiliza en el presente documento intenta abarcar una cantidad de polímeros naturales o sintéticos, similares al caucho, que presentan un alto grado de extensibilidad elástica a la temperatura normal a que se utiliza la composición de grasa lubricante de acuerdo con el invento.The term "rubber component" that is used in this document tries to cover a quantity of natural or synthetic polymers, similar to rubber, which have a high degree of elastic extensibility at normal temperature at that the lubricating grease composition is used according to the invention.

El componente de caucho para utilizar en la composición de grasa lubricante de acuerdo con el invento comprende caucho natural (NR), poliisopreno (IR), poliisotudanieno (BR), estirenobutadieno (SBR), etilenopropilenodieno (EPDM), caucho etilenopropileno (EPR), poliuretano (PUR), polimetacrialto (PMA), poliisobutileno (PIB), ácido poliisobutileno-succinico (PIBSA) o ácido poliacimilamido de poliisobutileno-succinico (PIBS-PAM), o bien mezclas de dichas sustancias. El contenido del componente de caucho en la composición de grasa lubricante de acuerdo con el invento está comprendido entre el 0,05 y el 4,5% en peso, y preferiblemente entre el 0,5 y el 3,0% en pesoThe rubber component to use in the lubricating grease composition according to the invention comprises natural rubber (NR), polyisoprene (IR), polyisotudaniene (BR), styrenebutadiene (SBR), ethylene propylene diene (EPDM), rubber ethylene propylene (EPR), polyurethane (PUR), polymethacrylate (PMA), polyisobutylene (GDP), acid polyisobutylene succinic acid (PIBSA) or acid polyisobutylene succinic polyacylamide (PIBS-PAM), or mixtures of said substances. He content of the rubber component in the fat composition lubricant according to the invention is between 0.05 and 4.5% by weight, and preferably between 0.5 and 3.0% in weight

La composición de grasa lubricante de acuerdo con el invento también puede comprender ventajosamente uno o más componentes aditivos de un tipo que ya es conocido previamente per se. El componente o componentes aditivos puede(n) consistir en uno o más aditivos químicos funcionales diferentes que refuerzan, mejoran o complementan las propiedades básicas de la composición de grasa lubricante. Son ejemplos de tales aditivos los antioxidantes, inhibidores de corrosión, productos anti-abrasión y aditivos que aumentan la tolerancia a la presión del tipo y composición química que ya es perfectamente conocida por los entendidos en la materia. En caso apropiado, el contenido total del componente o componentes aditivos en la composición de grasa lubricante de acuerdo con el invento está comprendido ventajosamente entre el 0,2 y el 15% en peso, y preferiblemente entre el 1 y el 8% en peso.The lubricating grease composition according to the invention may also advantageously comprise one or more additive components of a type that is previously known per se . The additive component or components may (n) consist of one or more different functional chemical additives that reinforce, improve or complement the basic properties of the lubricating grease composition. Examples of such additives are antioxidants, corrosion inhibitors, anti-abrasion products and additives that increase the pressure tolerance of the chemical type and composition that is already well known to those skilled in the art. If appropriate, the total content of the additive component or components in the lubricating grease composition according to the invention is advantageously between 0.2 and 15% by weight, and preferably between 1 and 8% by weight.

Las composiciones de grasa lubricante de acuerdo con el invento pueden producirse mediante procedimientos de fabricación que ya son conocidos y que, por tanto, no serán descritos con detalle en el presente documento. Se describe un procedimiento característico para fabricar composiciones de grasa lubricante, por ejemplo, en la antes mencionada especificación de patente EP-0.700.986 A2.The lubricating grease compositions according with the invention they can be produced by methods of manufacturing that are already known and therefore will not be described in detail herein. It describes a characteristic procedure for manufacturing fat compositions lubricant, for example, in the aforementioned specification of EP-0.700.986 A2.

Un procedimiento característico de fabricación para producir grasa lubricante puede comprende por ejemplo, pero no necesariamente, las siguientes estas principales:A characteristic manufacturing procedure to produce lubricating grease can comprise for example, but not necessarily, the following these main ones:

--
mezclar el componente de polímero mientras se calienta y/o con el uso de disolventes apropiados;mix the polymer component while heating and / or with the use of solvents appropriate;

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mezclar el componente de poliolefina con el componente básico de aceite y cualquier componentes aditivo;mix the polyolefin component with the basic component of oil and any components additive;

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emplear una atmósfera protectora a fin de evitar la oxidación del aceite;employ a protective atmosphere in order to avoid oil oxidation;

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calentar a una temperatura que es superior a la del punto de fusión del componente de poliolefina;heat to a temperature that is higher than the melting point of the component of polyolefin;

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enfriar rápidamente a temperatura ambiente o inferior (templado).cool quickly to temperature ambient or lower (temperate).

En este contexto, puede añadirse el componente de caucho, junto con otros componentes, durante la primera etapa del procedimiento. Alternativamente, el componente de caucho puede añadirse después de la última etapa del procedimiento, en conexión con la mezcla que se está homogenizando. Tal como se ha mencionado antes, la adición inicial del componente de caucho consigue un producto final que tiene una alta cohesión mientras que la adición posterior del componente de caucho produce un aumento de las propiedades de adhesión.In this context, the component of rubber, together with other components, during the first stage of process. Alternatively, the rubber component can be added after the last stage of the procedure, in connection with the mixture that is being homogenized. As mentioned before, the initial addition of the rubber component achieves a final product that has high cohesion while adding The rubber component afterwards produces an increase in adhesion properties

Ejemplo 1Example 1

La Tabla 1 de abajo muestra una composición de una primera forma de realización preferida (A) de una composición de grasa lubricante de acuerdo con el invento que está compuesta para proporcionar una baja purga de aceite.Table 1 below shows a composition of a first preferred embodiment (A) of a composition of lubricating grease according to the invention that is composed for Provide low oil purge.

TABLA 1TABLE 1 Composición de grasa lubricante ALubricating grease composition A

ComponenteComponent TipoKind % en peso% in weigh PoliolefinaPolyolefin polipropileno (Mw: \approx 90.000)polypropylene (Mw: \ approx 90,000) 10,010.0 CauchoRubber EPDMEPDM 2,52.5 Aceite baseBase oil aceite mineral (viscosidad cinemáticamineral oil (viscosity kinematics 81,581.5 (100ºC) 85 mm^{2}/s)(100 ° C) 85 mm2 / s) AditivoAdditive 6,06.0 - antioxidante- antioxidant aditivos convencionales que ya sonconventional additives that already They are - anti-abrasión- anti abrasion conocidos por los entendidos en laknown to connoisseurs in the - inhibidor de corrosión- inhibitor of corrosion materiamatter

La Tabla 2 de abajo muestra la composición de una segunda forma de realización preferida de una composición de grasa lubricante de acuerdo con el invento. En este caso, la composición de grasa lubricante B se ha compuesto a fin de proporcionar una purga de aceite relativamente alta.Table 2 below shows the composition of a second preferred embodiment of a fat composition lubricant according to the invention. In this case, the composition of lubricating grease B has been composed in order to provide a relatively high oil purge.

TABLA 2TABLE 2 Composición de grasa lubricante BLubricating grease composition B

ComponenteComponent TipoKind % en peso% in weigh PoliolefinaPolyolefin polipropileno (Mw: \approx 90.000)polypropylene (Mw: \ approx 90,000) 10,010.0 CauchoRubber BRBR 2,52.5 Aceite baseBase oil aceite mineral (viscosidad cinemáticamineral oil (viscosity kinematics 81,581.5 (100ºC) 85 mm^{2}/s)(100 ° C) 85 mm2 / s) AditivoAdditive 6,06.0 - antioxidante- antioxidant aditivos convencionales que ya sonconventional additives that already They are - anti-abrasión- anti abrasion conocidos por los entendidos en laknown to connoisseurs in the - inhibidor de corrosión- inhibitor of corrosion materiamatter

Mientras que los tipos de componente aditivo que pueden utilizarse no son críticos cuando se implanta el presente invento, deben seleccionarse en base de lo que requiere la aplicación en particular. La selección de componentes aditivos adecuados para una aplicación específica no debe presentar ninguna dificultad para la persona entendida en la materia.While the types of additive component that can be used are not critical when the present is implanted invention, should be selected based on what the particular application. The selection of additive components suitable for a specific application should not present any difficulty for the person understood in the matter.

Los componentes aditivos que se utilizan en las composiciones de grasa lubricante A y B son compuestos químicos de un tipo que ya es perfectamente conocido para la persona entendida en la materia.The additive components used in Lubricating grease compositions A and B are chemical compounds of a guy who is already perfectly known to the understood person in the matter.

Los resultados de una valoración hecha en laboratorio, realizada utilizando métodos de prueba que son reconocidos para el objeto perseguido, del grado de lubrificación de estas composiciones A y B, que fueron producidas en una planta piloto, aparecen registrados en la siguiente Tabla 3.The results of an assessment made in laboratory, performed using test methods that are recognized for the object pursued, of the degree of lubrication of these compositions A and B, which were produced in a plant pilot, are registered in the following Table 3.

TABLA 3TABLE 3

PruebaProof MétodoMethod Composición de grasa lubricanteFat composition lubricant (de acuerdo con el invento)(according to the invention) ATO BB Penetración 60 golpes,Penetration 60 strokes, DIN ISO 2137DIN ISO 2137 290290 300300 Penetración, 5.000 golpesPenetration, 5,000 hits DIN ISO 2137DIN ISO 2137 310310 320320 Penetración, 100.000 golpesPenetration, 100,000 hits DIN ISO 2137DIN ISO 2137 325325 330330 Penetración al cabo de *)Penetration after *) ASTM D 1831ASTM D 1831 330330 330330 SRS a 50 h/80ºCSRS at 50 h / 80ºC R2F A a 90ºCR2F At 90 ° C DIN 51806DIN 51806 aprobadoapproved aprobadoapproved Separación de aceite a 40ºCOil separation at 40 ° C DIN 51817DIN 51817 2,4%2.4% 8,3%8.3% Viscosidad cin. a 40ºCViscosity cin. at 40 ° C ASTM D 446ASTM D 446 85 mm^{2}/s85 mm2 / s 85 mm^{2}/s85 mm2 / s Punto de goteoPoint drip DIN ISO 2176DIN ISO 2176 147ºC147 ° C 147ºC147 ° C *) SRS: Estabilidad de balanceo laminar*) SRS: Stability laminar roll

Tal como se ha mencionado anteriormente, la figura 1 adjunta muestra los resultados de las mediciones de separación de aceite llevadas a cabo en dichas composiciones de grasa lubricante A y B, mientras que la adjunta figura 2 muestra los resultados de las mediciones adicionales de separación de aceite hechas sobre la composición de grasa lubricante A.As mentioned above, the Figure 1 attached shows the results of the measurements of oil separation carried out in said compositions of lubricating grease A and B, while the attached figure 2 shows the results of additional oil separation measurements made on the composition of lubricating grease A.

Si la persona entendida desea realizar una comparación entre los resultados de medición para las composiciones de grasa lubricante A y B de acuerdo con el invento, tal como aparece en la Tabla 3 o en las figuras 1 y 2, y los resultados obtenidos con las composiciones de grasa lubricante antes conocidas, debe estar en condiciones de utilizar algunos de los resultados que se indican en las especificaciones de patente que se mencionan en el presente documento en conexión con la descripción de la técnica anterior.If the understood person wishes to make a comparison between the measurement results for the compositions of lubricating grease A and B according to the invention, such as appears in Table 3 or in figures 1 and 2, and the results obtained with the lubricating grease compositions known above, you must be able to use some of the results that are indicated in the patent specifications mentioned in the present document in connection with the description of the technique previous.

Incidentalmente, algunos de los métodos de prueba utilizados en el presente documento ya han sido descritos en la antes citada especificación de patente EP-0.700.986 A2.Incidentally, some of the test methods used in this document have already been described in the aforementioned patent specification EP-0.700.986 A2.

Los resultados de medición representados en la figura 1 adjunta derivan de una medición modificada llevada a cabo en las composiciones de grasa lubricante A y B utilizando el método de medición FTM 791/391.2, prosiguiendo la medición durante 2 semanas en lugar de una sola semana, tal como es habitual.The measurement results represented in the attached figure 1 derive from a modified measurement carried out in the lubricating grease compositions A and B using the method of measurement FTM 791 / 391.2, continuing the measurement for 2 weeks instead of a single week, as usual.

Los resultados de medición representados en la figura 2 adjunta derivan de mediciones llevadas a cabo de acuerdo con la norma DIN 51817, a dos temperaturas distintas, es decir a 25 y a 40ºC, en la composición de grasa lubricante A.The measurement results represented in the Figure 2 attached derive from measurements carried out according with DIN 51817, at two different temperatures, that is, at 25 and at 40 ° C, in the lubricating grease composition A.

Por otra parte, los métodos de prueba que se utilizaron en la evaluación de laboratorio de las composiciones de grasa lubricante A y B, de acuerdo con el invento, resultarán evidentes de los métodos estándares que aparecen en la Tabla 3.Moreover, the test methods that are used in the laboratory evaluation of the compositions of lubricating grease A and B, according to the invention, will result evident from the standard methods shown in Table 3.

Tal como resulta evidente en la Tabla 3 y en la figura 1 adjunta, el grado de purga de aceite en el caso de la composición de grasa lubricante A de acuerdo con el invento es sustancialmente menor que en el caso de la composición de grasa lubricante B según el invento, es decir, el grado de purga de aceite puede regularse eligiendo el tipo de caucho.As is evident in Table 3 and in the Figure 1 attached, the degree of oil purge in the case of lubricating grease composition A according to the invention is substantially less than in the case of fat composition lubricant B according to the invention, ie the degree of oil purge It can be regulated by choosing the type of rubber.

También puede verse en la Tabla 3 que ambas composiciones de grasa lubricante A y B de acuerdo con el invento presentan una buena estabilidad mecánica a pesar del hecho de que se comportan de manera distinta en lo que respecta a la separación de aceite.It can also be seen in Table 3 that both lubricating grease compositions A and B according to the invention they have good mechanical stability despite the fact that they behave differently in regards to the separation of oil.

Las dos composiciones de grasa lubricante A y B de acuerdo con el invento también presentan buenas propiedades lubricantes cuando se miden de acuerdo con la norma R2F A.The two lubricating grease compositions A and B according to the invention they also have good properties lubricants when measured in accordance with R2F A.

Ejemplo 2Example 2

En una segunda serie experimental, se preparó una composición de grasa lubricante C de acuerdo con el invento con la composición representada en la siguiente Tabla 4.In a second experimental series, a lubricating grease composition C according to the invention with the composition represented in the following Table 4.

TABLA 4TABLE 4 Composición de grasa lubricante CLubricating grease composition C

ComponenteComponent TipoKind % en peso% in weigh PoliolefinaPolyolefin polipropileno (Mw: \approx 90.000)polypropylene (Mw: \ approx 90,000) 13,513.5 CauchoRubber EPDMEPDM 1,51.5 Aceite base 1Base oil 1 aceite mineral (viscosidad cinemáticamineral oil (viscosity kinematics 65,065.0 (40ºC) 30 mm^{2}/s)(40 ° C) 30 mm2 / s) Aceite base 2Base oil 2 Ester (viscosidad cinemáticaEster (viscosity kinematics 15,015.0 (40ºC) 30 mm^{2}/s)(40 ° C) 30 mm2 / s) AditivoAdditive 5,05.0 - antioxidante- antioxidant aditivos convencionales que ya sonconventional additives that already They are - anti-abrasión- anti abrasion conocidos por los entendidos en laknown to connoisseurs in the - inhibidor de corrosión- inhibitor of corrosion materiamatter

Tal como puede verse en la anterior Tabla 4, la composición de grasa lubricante C contiene dos diferentes componentes de aceite básico. Además, los contenidos de los diferentes componentes difieren de aquellos de las antes descritas composiciones de grasa lubricante A y B.As can be seen in the previous Table 4, the lubricant grease composition C contains two different basic oil components. In addition, the contents of the different components differ from those of the previously described lubricating grease compositions A and B.

Los resultados de la prueba que se obtuvieron al analizar la composición de grasa lubricante C aparecen en la Tabla 5 de abajo.The test results that were obtained at analyze the composition of lubricating grease C shown in Table 5 down.

A partir de los resultados registrados en la Tabla 5 puede verse que la composición de grasa lubricante C presenta unas muy buenas propiedades con respecto, por ejemplo, a la capacidad de lubrificación (R2F), vida útil (R0f), nivel de ruido (SKF-BEQUIET), la capacidad de bombeo y la estabilidad (sistema 24, lubricación automática).From the results recorded in the Table 5 can be seen that the lubricating grease composition C it has very good properties with respect, for example, to the lubrication capacity (R2F), service life (R0f), noise level (SKF-BEQUIET), the pumping capacity and the stability (system 24, automatic lubrication).

TABLA 5TABLE 5

PruebaProof MétodoMethod Composición de grasa lubricanteFat composition lubricant (de acuerdo con el invento)(according to invention) Penetración, después de 60 golpesPenetration, after 60 hits DIN ISO 2137DIN ISO 2137 280280 Penetración, después de 10^{5} golpesPenetration, after 10 5 strokes DIN ISO 2137DIN ISO 2137 315315 Penetración después de SRS*)Penetration after of SRS *) ASTM D1831ASTM D1831 325325 R2F (110ºC)R2F (110 ° C) DIN 51806DIN 51806 AprobadoApproved R0F (10.000 rpm, 120ºC)R0F (10,000 rpm, 120 ° C) Método de prueba SKFTesting method SKF L50 aprox. 4.000 hL50 approx. 4,000 h Nivel de ruido (picos máximos)level of noise (peaks maximum) SKF-BEQUIETSKF-BEQUIET <5 \mum/s<5 \ mum / s

TABLA 5 (continuación)TABLE 5 (continued)

PruebaProof MétodoMethod Composición de grasa lubricanteFat composition lubricant (de acuerdo con el invento)(according to invention) Separación de aceite a temp.ambienteOil separation a ambient temp DIN 51817DIN 51817 1,9%1.9% Punto de goteoDrip point DIN ISO 2176DIN ISO 2176 147ºC147 ° C Capacidad de bombeoCapacity of pumping Lincoln-HeliosLincoln-Helios <-20ºC<-20ºC Sistema 24 lub.automát.System 24 lub.automat. Método de prueb SKFTest method SKF ExcelenteExcellent *) SRS: Estabilidad de balanceo laminar a 50h/80ºC*) SRS: Laminar roll stability at 50h / 80ºC

Por consiguiente, el presente invento hace posible regular las propiedades de una composición de grasa lubricante, especialmente con respecto a la purga de aceite, por medio de la elección del aceite básico o, especialmente, mediante la variación de la relación existente entre el componente de caucho y el componente de poliolefina. Tal como se ha mencionado antes, también es posible alterar las propiedades de una composición de grasa lubricante eligiendo el momento de añadir el componente de caucho durante el proceso de fabricación.Therefore, the present invention makes possible to regulate the properties of a fat composition lubricant, especially with respect to the oil purge, by means of choosing the basic oil or, especially, by variation of the relationship between the rubber component and the polyolefin component. As mentioned before, it is also possible to alter the properties of a composition of lubricating grease choosing when to add the component of rubber during the manufacturing process.

A este respecto, el componente o componentes de poliolefina puede decirse que suministra las partes cristalinas de la composición de grasa lubricante terminada de acuerdo con el invento, mientras que el componente o los componentes de caucho suministra(n) las partes amorfas.In this regard, the component or components of polyolefin can be said to supply the crystalline parts of The lubricating grease composition finished according to the invention while the rubber component or components Supply the amorphous parts.

Tomados conjuntamente, el componente de poliolefina y el componente de caucho proporciona una estructura que imparte un alto grado de estabilidad mecánica a la composición de grasa lubricante de acuerdo con el invento. La proporción de partes amorfas y cristalinas regula las propiedades mecánicas de la composición de grasa lubricante tales como la elasticidad y espesor de película y, además, con respecto a la base o aceite lubrificante, su capacidad de absorción y capacidad aguante.Taken together, the component of polyolefin and the rubber component provides a structure that imparts a high degree of mechanical stability to the composition of lubricating grease according to the invention. The proportion of parts Amorphous and crystalline regulates the mechanical properties of the lubricating grease composition such as elasticity and thickness of film and, in addition, with respect to the base or lubricating oil, its absorption capacity and endurance capacity.

Asimismo, las propiedades de ruido de la composición de grasa lubricante de acuerdo con el invento pueden mejorarse eligiendo el tipo y contenido del contenido de caucho. Otras propiedades, tales como la vida útil, también pueden mejorarse ampliamente ajustando la composición de la composición de grasa lubricante de acuerdo con el invento.Also, the noise properties of the lubricating grease composition according to the invention can be improved by choosing the type and content of the rubber content. Other properties, such as shelf life, can also be improved widely adjusting the composition of the fat composition lubricant according to the invention.

La composición de grasa lubricante de acuerdo con el invento proporciona la posibilidad de diseñar especialmente composiciones para diferentes clases de lubricante, las denominadas clases NLGI.The lubricating grease composition according to the invention provides the possibility to design especially compositions for different kinds of lubricant, the so-called NLGI classes.

Debe comprenderse que el presente invento no está limitado en modo alguno a lo que aparece respecto a la descripción, a modo de ejemplo, de la forma de realización y que el alcance del invento queda definido por las reivindicaciones de patente adjuntas.It should be understood that the present invention is not limited in any way to what appears with respect to the description, by way of example, of the embodiment and that the scope of the invention is defined by the patent claims attached.

Claims (6)

1. Composición de grasa lubricante, comprendiendo por lo menos un componente de poliolefina, por lo menos un componente de aceite básico, y por lo menos un componente de caucho, caracterizada por el hecho de que la composición de grasa lubricante es una composición de grasa no iónica y que el contenido de componente de caucho está comprendido entre 0,05 y 4,5% en peso, el contenido de componente de poliolefina está comprendido entre el 5 y el 30% en peso y el contenido del componente de aceite básico está comprendido entre el 60 y el 90% en peso, mientras que el componente o los componentes de caucho es/son seleccionados del grupo de caucho natural, poliisopreno, poliisobutadieno, estirenobutadieno, etilenopropilenodieno, caucho etilenopropileno, poliuretano, polimetacrilado, poliisobutileno, ácido poliisobutileno-succinico o ácido poliacrilamida de poliisobutileno-succinico.1. Lubricating grease composition, comprising at least one polyolefin component, at least one basic oil component, and at least one rubber component, characterized by the fact that the lubricating grease composition is a grease composition Non-ionic and that the rubber component content is between 0.05 and 4.5% by weight, the polyolefin component content is between 5 and 30% by weight and the content of the basic oil component is between 60 and 90% by weight, while the rubber component or components is / are selected from the group of natural rubber, polyisoprene, polyisobutadiene, styrenebutadiene, ethylenepropylene diene, ethylene propylene rubber, polyurethane, polymethacrylate, polyisobutylene, polyisobutylene acid- succinic or polyisobutylene succinic polyacrylamide acid. 2. Composición de grasa lubricante de acuerdo con la reivindicación 1, caracterizada por el hecho de que el componente o los componentes de caucho comprende(n) una estructura amorfa.2. Lubricating grease composition according to claim 1, characterized in that the rubber component or components comprise (n) an amorphous structure. 3. Composición de grasa lubricante de acuerdo con la reivindicación 1 ó 2, caracterizada por el hecho de que el contenido de componente de caucho está comprendido entre el 0,5 y el 3,0% en peso.3. Lubricating grease composition according to claim 1 or 2, characterized in that the content of the rubber component is between 0.5 and 3.0% by weight. 4. Composición de grasa lubricante de acuerdo con una cualquiera de las reivindicaciones 1 a 3, caracterizada por el hecho de que el contenido de componente de poliolefina está comprendido entre el 9 y el 15% en peso.4. Lubricating grease composition according to any one of claims 1 to 3, characterized in that the content of polyolefin component is between 9 and 15% by weight. 5. Composición de grasa lubricante de acuerdo con una cualquiera de las reivindicaciones 1 a 4, caracterizada por el hecho de que el contenido del componente de aceite básico está comprendido entre el 75 y el 88% en peso.5. Lubricating grease composition according to any one of claims 1 to 4, characterized in that the content of the basic oil component is between 75 and 88% by weight. 6. Composición de grasa lubricante de acuerdo con una cualquiera de las reivindicaciones 1 a 5, caracterizada por el hecho de que la composición de grasa lubricante comprende adicionalmente por lo menos un componente aditivo que es seleccionado del grupo de antioxidantes, inhibidores de corrosión, productos anti-desgaste o aditivos de tolerancia-incremento de presión, y que el contenido del componente aditivo en este contexto está comprendido entre 0,2 y el 15% en peso, y preferiblemente entre el 1 y el 8% en peso.6. Lubricating grease composition according to any one of claims 1 to 5, characterized in that the lubricating grease composition additionally comprises at least one additive component that is selected from the group of antioxidants, corrosion inhibitors, products anti-wear or pressure-increasing tolerance additives, and that the content of the additive component in this context is between 0.2 and 15% by weight, and preferably between 1 and 8% by weight.
ES98850198T 1997-12-19 1998-12-18 COMPOSITION OF LUBRICANT FAT. Expired - Lifetime ES2247671T3 (en)

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EP4497806B1 (en) 2023-07-27 2025-09-24 Klueber Lubrication München GmbH & Co. KG Grease
CN117050798A (en) * 2023-07-28 2023-11-14 中国石油化工股份有限公司 A high-performance friction-increasing wire rope grease and its preparation method
DE102023121428B3 (en) 2023-08-10 2024-12-12 Fuchs SE process for recycling lubricating greases
DE102023133849A1 (en) 2023-12-04 2025-06-05 Fuchs SE Process for recycling lubricating greases by heating

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SE9704756D0 (en) 1997-12-19
EP0942063A1 (en) 1999-09-15
SE521451C2 (en) 2003-11-04
DE69831131D1 (en) 2005-09-15
EP0942063B1 (en) 2005-08-10
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DK0942063T3 (en) 2005-12-12
SE9704756L (en) 1999-06-20

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