WO2015092736A1 - Lubricating composition with a synthetic base - Google Patents

Lubricating composition with a synthetic base Download PDF

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Publication number
WO2015092736A1
WO2015092736A1 PCT/IB2014/067074 IB2014067074W WO2015092736A1 WO 2015092736 A1 WO2015092736 A1 WO 2015092736A1 IB 2014067074 W IB2014067074 W IB 2014067074W WO 2015092736 A1 WO2015092736 A1 WO 2015092736A1
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WO
WIPO (PCT)
Prior art keywords
lubricant composition
composition according
base
synthetic
type
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PCT/IB2014/067074
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Spanish (es)
French (fr)
Inventor
Luz Angela ACOSTA PORRAS
Cesar Augusto GELVEZ MENDEZ
Edgar Antonio MANJARRES DUARTE
Original Assignee
Organización Terpel S.A
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Publication of WO2015092736A1 publication Critical patent/WO2015092736A1/en

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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00Lubricating 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
    • C10M169/04Mixtures of base-materials and additives
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/04Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/06Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/283Esters of polyhydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/283Esters of polyhydroxy compounds
    • C10M2207/2835Esters of polyhydroxy compounds used as base material
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02Pour-point; Viscosity index
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/04Detergent property or dispersant property
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/10Inhibition of oxidation, e.g. anti-oxidants
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/50Emission or smoke controlling properties
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/25Internal-combustion engines

Definitions

  • the present invention is related to lubricating compositions for internal combustion engines comprising a synthetic base, viscosity index improvers and additives.
  • Lubricating compositions are products that, introduced between two moving surfaces reduce friction between them, facilitate movement and reduce wear.
  • a lubricating composition for engines is composed of a base, which can be mineral, semi-synthetic or synthetic, and a set of additives that give it its properties and determine its characteristics.
  • the main functions of a lubricant in the engine are to disperse and transport the particles of combustion and wear to the filter, homogeneously distribute the temperature from the bottom of the engine to the top acting as a coolant, prevent corrosion, avoid the rust by the action of the water product of the condensation and seal acting as a joint of certain components.
  • the American Petroleum Institute has classified the bases of lubricant compositions into five categories 1 .
  • the first two groups correspond to bases obtained by petroleum refining and are known in the state of the art as mineral bases.
  • the bases of Group III are considered of the synthetic type, the bases group IV are synthetic and correspond to polyalphaolefins (PAO) and Group V is for the rest of bases not included in groups I to IV, in this group silicone is included, phosphate ester, polyalkylene glycol (PAG), polyol ester, among others.
  • a lubricating composition may include viscosity index improvers to maintain viscosity against temperature changes.
  • Various lubricating compositions comprising a base, viscosity index improvers and additives are described in the state of the art.
  • US 6303548 discloses a lubricating composition of SAE 0W40 classification.
  • the base of said composition comprises the mixture of a mineral base, two synthetic PAO and ester type bases, a mixture of viscosity index improvers and additives.
  • the viscosity index speaker for its part, is a hydrogenated diene copolymer, which includes blocks of hydrogenated styrene diene copolymers and star branched hydrogenated polyisoprene at a concentration of 4% to 9% v / v which may only be or mixed with another viscosity index improver of the PMA type.
  • US 6083888 discloses a lubricating composition in which the base is a mineral base or a mixture of synthetic and mineral bases present between 80% and 90% w / w.
  • the composition disclosed therein comprises a hydrogenated conjugated diene type viscosity index improver of radial or star configuration in a concentration between 0.01% and 10.0% w / w and a dispersing additive.
  • US 20130085089 describes a lubricating composition for engines whose base is a combination of mineral bases and / or synthetic bases, preferably PAO type.
  • the composition comprises viscosity index improvers such as polyalkyl methacrylate, ethylene-propylene and / or styrene-butadiene copolymer and a package of additives.
  • WO 200179399 teaches a lubricant whose base is made up of a mixture of mineral and semi-synthetic base alone or mixed with a synthetic base that contains a portion of PAO type or ester type base such as pentaerythriol.
  • the composition It comprises a viscosity index improver of the group of polyisobutenes, polymethacrylate esters, diene polymers, polyalkyl styrenes, diene copolymers conjugated to aryl alkenyl and polyalphaolefins and a package of additives.
  • WO 2012/076285 discloses a lubricating composition that includes mineral bases, synthetic bases and a styrene / diene hydrogenated copolymer viscosity index improver.
  • the composition includes ester-type anti-friction additives, zinc dithiphosphate (antiwear), PIBSA (dispersant), phenols (antioxidant) and sulfonates (detergent), as well as other anti-corrosion and extreme pressure additives.
  • the lubricating compositions for engines described in the prior art comprise a combination of mineral bases, synthetic bases or semi-synthetic bases together with viscosity index improvers and additives.
  • Mineral bases derived from petroleum are more volatile than those of the synthetic type, which means that by including them in lubricating compositions for engines, they demand greater consumption and generate a greater amount of emissions. There is a permanent and unsatisfied need to provide lubricating compositions that have better performance. 3.
  • the present invention corresponds to a lubricating composition for engines comprising a purely synthetic base, obtained from the mixture of two synthetic bases: one type alpha olefinic polyethylenes (PAO) and the other ester type, together with a styrene type viscosity index improver / diene and a package of additives.
  • the lubricating composition of the present invention provides an increase in engine power and torque with respect to mineral and / or semi-synthetic lubricant compositions.
  • the present invention relates to a lubricating composition for engines comprising a synthetic base formed by the mixture of an ester-like synthetic base and a synthetic olefinic polyethylene (PAO) type base, at least one viscosity index improver and a package of additives
  • a synthetic base formed by the mixture of an ester-like synthetic base and a synthetic olefinic polyethylene (PAO) type base, at least one viscosity index improver and a package of additives
  • the lubricating composition of the invention comprises a pentaerythrol-based polyol ester base between 1.0% and 5.0% w / w and a PAO type base with an average kinematic viscosity of 10 mm / s at 100 ° C between 75.0% and 85.0% w / w, mixed in a ratio between 1: 4 and 1:25 respectively.
  • Said bases correspond to more than 78.0% w / w of the total lubricant composition and the preferred mixing ratio is between 1: 12 and 1:20.
  • the viscosity index improver included in the lubricating compositions of the present invention is of the styrene / diene type of radial configuration at a concentration between 1.0% and 5.0% w / w, preferably between 2, 0% and 3.0% p / p.
  • the additive package of the lubricating compositions of the invention comprises antifriction additives, dispersants, antiwear, antioxidants and detergents in a concentration between 8.0% and 11.0% w / w, preferably between 10.0% and 10.5% w / w.
  • the lubricating composition of the invention may contain a pour point depressant in a concentration not exceeding 0.5% w / w.
  • the additive package has a sulphonate as a detergent additive
  • the dispersant additive is of the poly-isobutylene succinamide type (PIBSA)
  • the antifriction additive is of the ester type
  • the antioxidant additive is a phenolic type compound such as 2 , 3-diterbutyl-paracresol
  • the antiwear additive is zinc dithiophosphate.
  • the total phosphorus content in the lubricant composition of the invention can be up to 1.5% w / w.
  • An appropriate additive package for a preferred embodiment of the invention may be that supplied by Infineum International Ltd under the Infineum SI 885® brand.
  • the Infineum SI 885® additive package is specially designed for 4T motorcycle engines.
  • the lubricating composition of the invention can be classified as SAE 10W40 according to the Society of Automotive Engineers (SAE), API SN according to the American Petroleum Institute (API). J and JASO MA2 according to Japanese Organization of Automotive Standards (JASO) 4 .
  • the synthetic bases are initially mixed and subsequently the viscosity index improver and the additive package are added.
  • the ester lubricant base and the PAO base are transferred to a container in the proper relationship and homogenized, either with a homogenizer, a pump recirculation system or any other stirring system that allows Get a homogeneous mixture. Subsequently, and without suspending the stirring, the viscosity index improver and the additive package are added in order.
  • the mixture of the bases and the viscosity index improver is carried out together and once the homogeneous mixture is obtained, the additive package is added.
  • the mixture is heated to a temperature between 40 ° C and 50 ° C to reduce the viscosity of the bases and facilitate agitation and homogenization of the components.
  • the lubricant composition of the present invention is multigrade, it is classified as SAE 10W40, API SN and JASO MA2 and can be used to lubricate 4-stroke motorcycle engines.
  • 5000 mL of a lubricant composition are prepared with the components and amounts indicated in Table 1.
  • the lubricant composition thus obtained is multigrade and SAE 10W40, API SN and JASO MA2 could be classified.
  • Example 2
  • 5000 mL of a lubricant composition are prepared with the components and amounts indicated in Table 3.
  • the lubricant composition thus obtained is multigrade and SAE 10W40, API SN and JASO MA2 could be classified.
  • Example 1 The lubricant composition obtained in Example 1 and that of four commercial lubricant compositions for 4-stroke motorcycle engines rated SAE 10W40 and JASO MA2 were tested in a dynamometric chassis test on a Mustang Dynamoter reference MD-100-M-HD With the following technical specifications:
  • FIGURE 1 Increase of torque and power of the lubricant composition of Example 1 with respect to the lubricating compositions Ll, L2, L3 and L4 according to the results of the dynamometric chassis test.
  • the lubricant composition of Example 1 generates an increase in torque between 1% and 4% and an increase in power between 6% and 7% with respect to the lubricating compositions Ll, L2, L3 and L4 .

Abstract

The invention relates to a lubricating composition for engines, comprising a purely synthetic base formed by the mixture of a synthetic base such as an ester and a synthetic base such as a PAO, together with a viscosity index improver of the styrene/diene type of a radial configuration, and an additive packet. The lubricating composition of the present invention generates an improved engine performance by increasing the torque and power thereof.

Description

COMPOSICION LUBRICANTE DE BASE SINTETICA  SYNTHETIC BASED LUBRICANT COMPOSITION
1. CAMPO DE LA INVENCIÓN  1. FIELD OF THE INVENTION
La presente invención está relacionada con composiciones lubricantes para motores de combustión interna que comprenden una base sintética, mejoradores de índice de viscosidad y aditivos. The present invention is related to lubricating compositions for internal combustion engines comprising a synthetic base, viscosity index improvers and additives.
2. DESCRIPCIÓN DEL ESTADO DEL ARTE 2. DESCRIPTION OF THE STATE OF THE ART
Las composiciones lubricantes son productos que, introducidos entre dos superficies móviles reducen la fricción entre ellas, facilitan el movimiento y reducen el desgaste. Una composición lubricante para motores se compone de una base, que puede ser mineral, semisintética o sintética, y un conjunto de aditivos que le confieren sus propiedades y determinan sus características. Lubricating compositions are products that, introduced between two moving surfaces reduce friction between them, facilitate movement and reduce wear. A lubricating composition for engines is composed of a base, which can be mineral, semi-synthetic or synthetic, and a set of additives that give it its properties and determine its characteristics.
Las principales funciones que cumple un lubricante en el motor son dispersar y transportar las partículas producto de la combustión y el desgaste al filtro, distribuir homogéneamente la temperatura desde la parte inferior del motor hasta la parte superior actuando como un refrigerante, evitar la corrosión, evitar la herrumbre por la acción del agua producto de la condensación y sellar actuando como una junta de determinados componentes. The main functions of a lubricant in the engine are to disperse and transport the particles of combustion and wear to the filter, homogeneously distribute the temperature from the bottom of the engine to the top acting as a coolant, prevent corrosion, avoid the rust by the action of the water product of the condensation and seal acting as a joint of certain components.
El Instituto Americano del Petróleo (API por sus siglas en inglés), ha clasificado las bases de las composiciones lubricantes en cinco categorías1. Los dos primeros grupos corresponden a bases obtenidas por refinación del petróleo y se les conoce en el estado de la técnica como bases minerales. Las bases del Grupo III son consideradas del tipo sintético, las bases grupo IV son sintéticas y corresponden a polialfaolefinas (PAO) y el Grupo V es para el resto de bases no incluidas en los grupos I a IV, en este grupo se incluyen silicona, éster de fosfato, polialquilenglicol (PAG), polioléster, entre otras. The American Petroleum Institute (API) has classified the bases of lubricant compositions into five categories 1 . The first two groups correspond to bases obtained by petroleum refining and are known in the state of the art as mineral bases. The bases of Group III are considered of the synthetic type, the bases group IV are synthetic and correspond to polyalphaolefins (PAO) and Group V is for the rest of bases not included in groups I to IV, in this group silicone is included, phosphate ester, polyalkylene glycol (PAG), polyol ester, among others.
1 API. BASE OIL INTERCHANGEABILITY GUIDELINES FOR PASSENGER CAR MOTOR OILS AND DIESEL ENGINE OILS. Appendix E http://www.api.org/certification-programs/engine-oil-diesel. La base de un lubricante por sí sola no ofrece toda la protección que necesita un motor, por lo que es necesario adicionar varios aditivos. Los aditivos cumplen determinadas funciones y se pueden clasificar en: antioxidantes, antidesgaste, antiespumantes, antiherrumbre, detergentes, dispersantes, espesantes, antifricción y controladores de ácidos, o neutralizantes. Adicionalmente, una composición lubricante puede incluir mejoradores de índice de viscosidad para mantener la viscosidad frente cambios de temperatura. En el estado del arte se describen diversas composiciones lubricantes que comprenden una base, mejoradores de índice de viscosidad y aditivos. El documento US 6303548 divulga una composición lubricante de clasificación SAE 0W40. La base de dicha composición comprende la mezcla de una base mineral, dos bases sintéticas tipo PAO y tipo éster, una mezcla de mejoradores de índice de viscosidad y aditivos. Por su parte, el mej orador de índice de viscosidad es un copolímero de dieno hidrogenado, que incluyen bloques de copolímeros de estireno- dieno hidrogenados y poliisopreno hidrogenado ramificado en estrella en una concentración del 4% al 9% v/v que puede estar sólo o mezclado con otro mejorador de índice de viscosidad del tipo PMA. 1 API BASE OIL INTERCHANGEABILITY GUIDELINES FOR PASSENGER CAR MOTOR OILS AND DIESEL ENGINE OILS. Appendix E http://www.api.org/certification-programs/engine-oil-diesel. The base of a lubricant alone does not offer all the protection an engine needs, so it is necessary to add several additives. The additives fulfill certain functions and can be classified as: antioxidants, antiwear, antifoams, anti rust, detergents, dispersants, thickeners, antifriction and acid controllers, or neutralizers. Additionally, a lubricating composition may include viscosity index improvers to maintain viscosity against temperature changes. Various lubricating compositions comprising a base, viscosity index improvers and additives are described in the state of the art. US 6303548 discloses a lubricating composition of SAE 0W40 classification. The base of said composition comprises the mixture of a mineral base, two synthetic PAO and ester type bases, a mixture of viscosity index improvers and additives. The viscosity index speaker, for its part, is a hydrogenated diene copolymer, which includes blocks of hydrogenated styrene diene copolymers and star branched hydrogenated polyisoprene at a concentration of 4% to 9% v / v which may only be or mixed with another viscosity index improver of the PMA type.
El documento US 6083888 divulga una composición lubricante en la cual la base es una base mineral o una mezcla de bases sintéticas y minerales presente entre el 80% y el 90% p/p. La composición allí divulgada comprende un mejorador de índice de viscosidad tipo dieno conjugado hidrogenado de configuración radial o estrella en una concentración entre 0,01% y 10,0% p/p y un aditivo dispersante. El documento US 20130085089 describe una composición lubricante para motores cuya base es una combinación de bases minerales y/o bases sintéticas, preferiblemente tipo PAO. La composición comprende mejoradores de índice de viscosidad tipo polialquil metacrilato, copolímero de etileno-propileno y/o de estireno-butadieno y un paquete de aditivos. US 6083888 discloses a lubricating composition in which the base is a mineral base or a mixture of synthetic and mineral bases present between 80% and 90% w / w. The composition disclosed therein comprises a hydrogenated conjugated diene type viscosity index improver of radial or star configuration in a concentration between 0.01% and 10.0% w / w and a dispersing additive. US 20130085089 describes a lubricating composition for engines whose base is a combination of mineral bases and / or synthetic bases, preferably PAO type. The composition comprises viscosity index improvers such as polyalkyl methacrylate, ethylene-propylene and / or styrene-butadiene copolymer and a package of additives.
El documento WO 200179399 enseña un lubricante cuya base está conformada por una mezcla de base mineral y semi-sintética sola o mezclada con una base sintética que contiene una porción de base tipo PAO o tipo éster como pentaeritriol. La composición comprende un mejorador de índice de viscosidad del grupo de los poliisobutenos, ésteres de polimetacrilato, polímeros de dieno, polialquil estírenos, copolímeros de dieno conjugado con aril alquenilo y polialfaolefinas y un paquete de aditivos. El documento WO 2012/076285 divulga una composición lubricante que incluye bases minerales, bases sintéticas y un mejorador de índice de viscosidad tipo copolímero hidrogenado de estireno/dieno. La composición incluye aditivos antifricción tipo éster, ditifosfato de zinc (antidesgaste), PIBSA (dispersante), fenoles (antioxidante) y sulfonatos (detergente), así como otros aditivos anticorrosión y de extrema presión. WO 200179399 teaches a lubricant whose base is made up of a mixture of mineral and semi-synthetic base alone or mixed with a synthetic base that contains a portion of PAO type or ester type base such as pentaerythriol. The composition It comprises a viscosity index improver of the group of polyisobutenes, polymethacrylate esters, diene polymers, polyalkyl styrenes, diene copolymers conjugated to aryl alkenyl and polyalphaolefins and a package of additives. WO 2012/076285 discloses a lubricating composition that includes mineral bases, synthetic bases and a styrene / diene hydrogenated copolymer viscosity index improver. The composition includes ester-type anti-friction additives, zinc dithiphosphate (antiwear), PIBSA (dispersant), phenols (antioxidant) and sulfonates (detergent), as well as other anti-corrosion and extreme pressure additives.
Las composiciones lubricantes para motores descritas en el estado de la técnica comprenden una combinación de bases minerales, bases sintéticas o bases semi- sintéticas junto con mejoradores de índice de viscosidad y aditivos. Las bases minerales derivadas del petróleo son más volátiles que las del tipo sintético, lo que hace que al incluirlas en composiciones lubricantes para motores, demanden mayor consumo y generen una mayor cantidad de emisiones. Existe una permanente e insatisfecha necesidad de proporcionar composiciones lubricantes que presenten mejores prestaciones. 3. BREVE DESCRIPCIÓN DEL INVENTO The lubricating compositions for engines described in the prior art comprise a combination of mineral bases, synthetic bases or semi-synthetic bases together with viscosity index improvers and additives. Mineral bases derived from petroleum are more volatile than those of the synthetic type, which means that by including them in lubricating compositions for engines, they demand greater consumption and generate a greater amount of emissions. There is a permanent and unsatisfied need to provide lubricating compositions that have better performance. 3. BRIEF DESCRIPTION OF THE INVENTION
La presente invención corresponde a una composición lubricante para motores que comprende una base puramente sintética, obtenida de la mezcla de dos bases sintéticas: una tipo polietilenos alfa olefinicos (PAO) y la otra tipo éster, junto con un mejorador de índice de viscosidad tipo estireno/dieno y un paquete de aditivos. La composición lubricante de la presente invención provee un incremento en potencia y torque del motor con respecto a las composiciones lubricantes de base mineral y/o semisintética. The present invention corresponds to a lubricating composition for engines comprising a purely synthetic base, obtained from the mixture of two synthetic bases: one type alpha olefinic polyethylenes (PAO) and the other ester type, together with a styrene type viscosity index improver / diene and a package of additives. The lubricating composition of the present invention provides an increase in engine power and torque with respect to mineral and / or semi-synthetic lubricant compositions.
Adicionalmente, el empleo de bases ciento por ciento sintéticas en la composición lubricante de la invención proveen mayor estabilidad térmica, lo que disminuye la formación de depósitos, mantiene las prestaciones del motor por más tiempo y disminuye las emisiones. 4. DESCRIPCIÓN DETALLADA DE LA INVENCIÓN Additionally, the use of one hundred percent synthetic bases in the lubricating composition of the invention provides greater thermal stability, which reduces the formation of deposits, maintains the engine performance for longer and decreases emissions. 4. DETAILED DESCRIPTION OF THE INVENTION
La presente invención se refiere a una composición lubricante para motores que comprende una base sintética conformada por la mezcla de una base sintética tipo éster y una base sintética tipo polietilenos alfa olefinicos (PAO), al menos un mejorador de índice de viscosidad y un paquete de aditivos. The present invention relates to a lubricating composition for engines comprising a synthetic base formed by the mixture of an ester-like synthetic base and a synthetic olefinic polyethylene (PAO) type base, at least one viscosity index improver and a package of additives
En una modalidad preferida, la composición lubricante de la invención comprende una base tipo éster de poliol basado en pentaeritrol entre 1,0% y 5,0% p/p y una base tipo PAO con viscosidad cinemática media de 10 mm /s a 100°C entre el 75,0% y 85,0% p/p, mezcladas en una relación entre 1 :4 y 1:25 respectivamente. Dicha bases corresponden a más del 78,0% p/p del total de la composición lubricante y la relación de mezcla preferida está entre 1: 12 y 1:20. En una modalidad preferida, el mejorador de índice de viscosidad incluido en las composiciones lubricantes de la presente invención es del tipo estireno/dieno de configuración radial en una concentración entre 1,0% y 5,0% p/p, preferiblemente entre 2,0% y 3,0% p/p. En una modalidad preferida, el paquete de aditivos de las composiciones lubricantes de la invención comprende aditivos antifricción, dispersantes, antidesgaste, antioxidantes y detergentes en una concentración entre 8,0% y 11,0% p/p, preferiblemente entre 10,0% y 10,5% p/p . Adicionalmente, la composición lubricante de la invención puede contener un depresor de punto de fluidez en una concentración no mayor al 0,5% p/p. In a preferred embodiment, the lubricating composition of the invention comprises a pentaerythrol-based polyol ester base between 1.0% and 5.0% w / w and a PAO type base with an average kinematic viscosity of 10 mm / s at 100 ° C between 75.0% and 85.0% w / w, mixed in a ratio between 1: 4 and 1:25 respectively. Said bases correspond to more than 78.0% w / w of the total lubricant composition and the preferred mixing ratio is between 1: 12 and 1:20. In a preferred embodiment, the viscosity index improver included in the lubricating compositions of the present invention is of the styrene / diene type of radial configuration at a concentration between 1.0% and 5.0% w / w, preferably between 2, 0% and 3.0% p / p. In a preferred embodiment, the additive package of the lubricating compositions of the invention comprises antifriction additives, dispersants, antiwear, antioxidants and detergents in a concentration between 8.0% and 11.0% w / w, preferably between 10.0% and 10.5% w / w. Additionally, the lubricating composition of the invention may contain a pour point depressant in a concentration not exceeding 0.5% w / w.
En otra modalidad preferida, el paquete de aditivos tiene un sulfonato como aditivo detergente, el aditivo dispersante es de tipo poli-isobutilen succinamida (PIBSA), el aditivo antifricción es del tipo éster, el aditivo antioxidante es un compuesto del tipo fenólico como el 2,3-diterbutil-paracresol y el aditivo antidesgaste es ditiofosfato de zinc. El contenido de fósforo total en la composición lubricante de la invención puede ser de hasta el 1,5% p/p. Un paquete de aditivos apropiado para una modalidad preferida de la invención, puede ser el suministrado por Infineum International Ltd bajo la marca Infineum SI 885®. El paquete de aditivos Infineum SI 885® está especialmente diseñado para motores 4T de motocicletas. In another preferred embodiment, the additive package has a sulphonate as a detergent additive, the dispersant additive is of the poly-isobutylene succinamide type (PIBSA), the antifriction additive is of the ester type, the antioxidant additive is a phenolic type compound such as 2 , 3-diterbutyl-paracresol and the antiwear additive is zinc dithiophosphate. The total phosphorus content in the lubricant composition of the invention can be up to 1.5% w / w. An appropriate additive package for a preferred embodiment of the invention may be that supplied by Infineum International Ltd under the Infineum SI 885® brand. The Infineum SI 885® additive package is specially designed for 4T motorcycle engines.
En una modalidad preferida, la composición lubricante de la invención se puede clasificar como SAE 10W40 según la Sociedad de Ingenieros Automotrices (SAE por sus siglas en ingles) , API SN según el Instituto Americano de Petróleo (API por sus siglas en ing lés) J y JASO MA2 según Or ganización Japonesa de Estándares Automotrices (JASO por sus siglas en ingles)4. In a preferred embodiment, the lubricating composition of the invention can be classified as SAE 10W40 according to the Society of Automotive Engineers (SAE), API SN according to the American Petroleum Institute (API). J and JASO MA2 according to Japanese Organization of Automotive Standards (JASO) 4 .
Para la elaboración de la composición lubricante de la presente invención, inicialmente se mezclan las bases sintéticas y posteriormente se adiciona el mejorador de índice de viscosidad y el paquete de aditivos. Para mezclar las bases sintéticas, se trasfieren a un recipiente la base del lubricante tipo éster y la base tipo PAO en la relación adecuada y se homogeniza, bien sea con un homogeneizador, un sistema de recirculación por bombas o cualquier otro sistema de agitación que permita obtener una mezcla homogénea. Posteriormente, y sin suspender la agitación, se adicionan en su orden el mejorador de índice de viscosidad y el paquete de aditivos. For the preparation of the lubricant composition of the present invention, the synthetic bases are initially mixed and subsequently the viscosity index improver and the additive package are added. To mix the synthetic bases, the ester lubricant base and the PAO base are transferred to a container in the proper relationship and homogenized, either with a homogenizer, a pump recirculation system or any other stirring system that allows Get a homogeneous mixture. Subsequently, and without suspending the stirring, the viscosity index improver and the additive package are added in order.
En una modalidad preferida de la invención, la mezcla de las bases y el mejorador de índice de viscosidad se realiza conjuntamente y una vez obtenida la mezcla homogénea, se adiciona el paquete de aditivos. En otra modalidad preferida, una vez iniciado el proceso, se calienta la mezcla a una temperatura entre 40°C y 50°C para disminuir la viscosidad de las bases y facilitar la agitación y homogenización de los componentes. In a preferred embodiment of the invention, the mixture of the bases and the viscosity index improver is carried out together and once the homogeneous mixture is obtained, the additive package is added. In another preferred embodiment, once the process has started, the mixture is heated to a temperature between 40 ° C and 50 ° C to reduce the viscosity of the bases and facilitate agitation and homogenization of the components.
En una modalidad preferida la composición lubricante de la presente invención es multigrado, se clasifica como SAE 10W40, API SN y JASO MA2 y se puede utilizar para lubricar motores de 4 tiempos de motocicletas. In a preferred embodiment the lubricant composition of the present invention is multigrade, it is classified as SAE 10W40, API SN and JASO MA2 and can be used to lubricate 4-stroke motorcycle engines.
http://www.sae.org/ http://www.sae.org/
3 http://www.api.org/ 3 http://www.api.org/
4 http://www.jsae.or.jp/ Los siguientes ejemplos ilustran con mayor detalle la invención, sin estar el concepto inventivo restringido a los mismos. 4 http://www.jsae.or.jp/ The following examples illustrate the invention in greater detail, without the inventive concept being restricted thereto.
EJEMPLOS EXAMPLES
Ejemplo 1. Example 1.
Se preparan 5000 mL de una composición lubricante con los componentes y cantidades indicados en la Tabla 1. 5000 mL of a lubricant composition are prepared with the components and amounts indicated in Table 1.
Tabla 1.  Table 1.
Figure imgf000007_0001
Figure imgf000007_0001
Se mezclan en un tanque conjuntamente 4215 mL de las base sintética tipo PAO, 215 mL de la base tipo éster y 120 mL del mej orador de índice de viscosidad calentando la mezcla a 45°C y manteniendo agitación constante. Posteriormente se adicionan 440 mL del paquete de aditivos y 10 mL del disipador del punto de fluidez hasta obtener una mezcla homogénea. 4215 mL of the synthetic base PAO, 215 mL of the ester type base and 120 mL of the viscosity index speaker are mixed together in a tank by heating the mixture at 45 ° C and maintaining constant stirring. Subsequently, 440 mL of the additive package and 10 mL of the pour point heatsink are added until a homogeneous mixture is obtained.
La composición lubricante así obtenida es multigrado y se podría clasificar SAE 10W40, API SN y JASO MA2. Ejemplo 2 The lubricant composition thus obtained is multigrade and SAE 10W40, API SN and JASO MA2 could be classified. Example 2
Se evaluaron algunas propiedades/parámetros de la composición lubricante obtenida en el Ejemplo 1 según la norma internacional ASTM5. Los resultados se ilustran en la Tabla 2: Some properties / parameters of the lubricant composition obtained in Example 1 were evaluated according to the international standard ASTM 5 . The results are illustrated in Table 2:
Tabla 2 Table 2
Figure imgf000008_0001
Figure imgf000008_0001
Ejemplo 3. Example 3
Se preparan 5000 mL de una composición lubricante con los componentes y cantidades indicados en la Tabla 3. 5000 mL of a lubricant composition are prepared with the components and amounts indicated in Table 3.
Tabla 3 Table 3
Figure imgf000008_0002
Figure imgf000008_0002
5 http://www.astm.org/ Se mezclan en un tanque conjuntamente 4215 mL de las base sintética tipo PAO, 225 mL de la base tipo éster y 120 mL del mej orador de índice de viscosidad calentando la mezcla a 45°C y manteniendo agitación constante. Posteriormente se adicionan 440 mL del paquete de aditivos hasta obtener una mezcla homogénea. 5 http://www.astm.org/ 4215 mL of the PAO synthetic base, 225 mL of the ester type base and 120 mL of the viscosity index speaker are mixed together in a tank by heating the mixture at 45 ° C and maintaining constant stirring. Subsequently, 440 mL of the additive package is added until a homogeneous mixture is obtained.
La composición lubricante así obtenida es multigrado y se podría clasificar SAE 10W40, API SN y JASO MA2. The lubricant composition thus obtained is multigrade and SAE 10W40, API SN and JASO MA2 could be classified.
Ejemplo 4 Example 4
Se evaluaron algunas propiedades/parámetros de la composición lubricante obtenida en el Ejemplo 3 según la norma internacional ASTM. Los resultados se ilustran en la tabla 4: Some properties / parameters of the lubricant composition obtained in Example 3 were evaluated according to the international ASTM standard. The results are illustrated in table 4:
Tabla 4 Table 4
Figure imgf000009_0001
Figure imgf000009_0001
Ejemplo 5  Example 5
La composición lubricante obtenida en el Ejemplo 1 y la de cuatro composiciones lubricantes comerciales para motores de motos de 4 tiempos de clasificación SAE 10W40 y JASO MA2 fueron probadas en un ensayo de chasis dinamométrico en un equipo Mustang Dynamoter referencia MD-100-M-HD con las siguientes especificaciones técnicas: The lubricant composition obtained in Example 1 and that of four commercial lubricant compositions for 4-stroke motorcycle engines rated SAE 10W40 and JASO MA2 were tested in a dynamometric chassis test on a Mustang Dynamoter reference MD-100-M-HD With the following technical specifications:
- Potencia: 335,56 KW/199,85 KW capacidad máxima de medición/ absorción - Carga: Absorbedor de potencia MDK-70 de corrientes de Eddy enfriado por aire - Rodillos: De maquinado preciso balanceados dinámicamente/correas bidireccionales - Power: 335.56 KW / 199.85 KW maximum measurement / absorption capacity - Load: MDK-70 power absorber of air-cooled Eddy currents - Rollers: Precisely machined dynamically balanced / bi-directional belts
- Velocidad máxima: 201,17 Km/h intermitente // 160,93 Km/h continuo  - Maximum speed: 201.17 Km / h intermittent // 160.93 Km / h continuous
- Capacidad del eje: 5443,11 Kg máximo  - Shaft capacity: 5443.11 Kg maximum
- Inercia: 907,17 Kg base mecánica  - Inertia: 907.17 Kg mechanical base
Se utilizó un software Power Dyno PC® que permite la evaluación del torque y potencia máximos desarrollados por el motor de una motocicleta Pulsar 180 UG BAJAJ®. Los resultados de torque y potencia se ilustran en la Figura 1 y en las Tablas 5 y 6. A Power Dyno PC® software was used that allows the evaluation of the maximum torque and power developed by the engine of a Pulsar 180 UG BAJAJ® motorcycle. Torque and power results are illustrated in Figure 1 and in Tables 5 and 6.
Tabla 5 Table 5
Figure imgf000010_0001
Figure imgf000010_0001
Tabla 6 Table 6
Figure imgf000010_0002
FIGURA 1. Incremento de torque y potencia de la composición lubricante del Ejemplo 1 con respecto a las composiciones lubricantes Ll, L2, L3 y L4 según los resultados de la prueba de chasis dinamométrico.
Figure imgf000010_0002
FIGURE 1. Increase of torque and power of the lubricant composition of Example 1 with respect to the lubricating compositions Ll, L2, L3 and L4 according to the results of the dynamometric chassis test.
Figure imgf000011_0001
Figure imgf000011_0001
■ Inc T= Incremento de torque.  ■ Inc T = Torque increase.
□ Inc P= Incremento en potencia  □ Inc P = Increase in power
De acuerdo a los resultados de la prueba, la composición lubricante del Ejemplo 1 genera un incremento en torque entre 1% y 4% y un incremento en potencia entre 6% y 7% con respecto a las composiciones lubricantes Ll, L2, L3 y L4. According to the test results, the lubricant composition of Example 1 generates an increase in torque between 1% and 4% and an increase in power between 6% and 7% with respect to the lubricating compositions Ll, L2, L3 and L4 .
Se debe entender que la presente invención no se halla limitada a las modalidades descritas e ilustradas, pues como será evidente para una persona versada en el arte, existen variaciones y modificaciones posibles que no se apartan del espíritu de la invención, el cual solo se encuentra definido por las siguientes reivindicaciones: It should be understood that the present invention is not limited to the modalities described and illustrated, since as will be evident to a person versed in art, there are possible variations and modifications that do not depart from the spirit of the invention, which is only found defined by the following claims:

Claims

REIVINDICACIONES
1. Una composición lubricante que comprende: a) una base sintética conformada por la mezcla de una base sintética tipo éster y una base sintética tipo PAO; 1. A lubricant composition that comprises: a) a synthetic base made up of a mixture of an ester-type synthetic base and a PAO-type synthetic base;
b) un mej orador de índice de viscosidad; y b) a viscosity index improver; and
c) un paquete de aditivos; c) an additive package;
2. Una composición lubricante según la Reivindicación 1, que adicionalmente comprende un depresor del punto de fluidez en una concentración de hasta 0,5% p/p. 2. A lubricant composition according to Claim 1, which additionally comprises a pour point depressant in a concentration of up to 0.5% w/w.
3. Una composición lubricante según la Reivindicación 1, donde la base sintética del tipo éster es de poliol basado en pentaeritriol. 3. A lubricant composition according to Claim 1, wherein the synthetic base of the ester type is a polyol based on pentaerythriol.
4. Una composición lubricante según la Reivindicación 1, donde la base sintética del tipo PAO tiene una viscosidad cinemática media de 10 mm /s a 100°C. 4. A lubricant composition according to Claim 1, wherein the PAO type synthetic base has an average kinematic viscosity of 10 mm/s at 100°C.
5. Una composición lubricante según la Reivindicación 1, donde el mej orador de índice de viscosidad es del tipo estireno/dieno de configuración radial. 5. A lubricant composition according to Claim 1, wherein the viscosity index improver is of the radial configuration styrene/diene type.
6. Una composición lubricante según la Reivindicación 1, donde el paquete de aditivos se compone de aditivos antifricción, dispersantes, antidesgaste, antioxidantes, detergentes, dispersantes y mezclas de los mismos. 6. A lubricant composition according to Claim 1, wherein the additive package is composed of anti-friction, dispersant, anti-wear, antioxidant, detergent, dispersant additives and mixtures thereof.
7. Una composición lubricante según la Reivindicación 1, donde la base sintética está entre el 75,0% y el 90,0% p/p con respecto al total de la composición lubricante. 7. A lubricant composition according to Claim 1, where the synthetic base is between 75.0% and 90.0% w/w with respect to the total lubricant composition.
8. Una composición lubricante según la Reivindicación 1, donde la base sintética y está en una concentración del 87,0% p/p. 8. A lubricant composition according to Claim 1, wherein the synthetic base y is in a concentration of 87.0% w/w.
9. Una composición lubricante según la Reivindicación 1, donde la relación de mezcla entre la base sintética tipo éster y la base tipo PAO está entre 1 :4 y 1 :25 respectivamente. 9. A lubricant composition according to Claim 1, wherein the mixing ratio between the synthetic ester type base and the PAO type base is between 1:4 and 1:25 respectively.
10. Una composición lubricante según la Reivindicación 1, donde la relación de mezcla entre la base sintética tipo éster y la base tipo PAO es de 1 :16. 10. A lubricant composition according to Claim 1, wherein the mixing ratio between the synthetic ester type base and the PAO type base is 1:16.
11. Una composición lubricante según la Reivindicación 1, donde el mej orador de índice de viscosidad está en una concentración entre el 1,0 y 5,0% p/p. 11. A lubricant composition according to Claim 1, wherein the viscosity index improver is in a concentration between 1.0 and 5.0% w/w.
12. Una composición lubricante según la Reivindicación 1, donde el paquete de aditivos está en una concentración entre el 8,0% y el 11,0% p/p. 12. A lubricant composition according to Claim 1, wherein the additive package is in a concentration between 8.0% and 11.0% w/w.
13. Una composición lubricante según la Reivindicación 1, caracterizado porque es multigrado y se clasifica como SAE 10W-40, API SN, y JASO MA2. 13. A lubricant composition according to Claim 1, characterized in that it is multigrade and is classified as SAE 10W-40, API SN, and JASO MA2.
14. Una composición lubricante según la Reivindicación 1, caracterizado por ser multigrado para lubricar motores de 4 tiempos. 14. A lubricant composition according to Claim 1, characterized by being multigrade to lubricate 4-stroke engines.
15. Una composición lubricante según la Reivindicación 1 que comprende: 15. A lubricant composition according to Claim 1 comprising:
Figure imgf000013_0001
Figure imgf000013_0001
16. Una composición lubricante según la Reivindicación 15, caracterizada porque cumple con los siguientes parámetros:16. A lubricant composition according to Claim 15, characterized in that it meets the following parameters:
Figure imgf000014_0001
Figure imgf000014_0001
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