WO2009133292A1 - Fluide lubrifiant multifonctionnel - Google Patents
Fluide lubrifiant multifonctionnel Download PDFInfo
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- WO2009133292A1 WO2009133292A1 PCT/FR2009/000412 FR2009000412W WO2009133292A1 WO 2009133292 A1 WO2009133292 A1 WO 2009133292A1 FR 2009000412 W FR2009000412 W FR 2009000412W WO 2009133292 A1 WO2009133292 A1 WO 2009133292A1
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- lubricating composition
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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
- C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
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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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
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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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
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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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
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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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic 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
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- 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
- C10N2020/019—Shear stability
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- 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
- C10N2020/02—Viscosity; Viscosity index
-
- 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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
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- 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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/68—Shear stability
-
- 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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- 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
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
-
- 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
- C10N2040/25—Internal-combustion engines
Definitions
- the present invention relates to multifunctional lubricating fluids that can be used in the various components of self-propelled vehicles, in particular in the engine, the transmission or the hydraulic circuit. More specifically, the subject of the invention is a single fluid that can be used directly in several types of application, in particular in the various bodies of self-propelled vehicles such as engines, transmission devices (gearboxes and transfer gearboxes), hydraulic circuits and other secondary organs without modification; in other words, the composition of this fluid is directly adapted for the different types of uses in question.
- Technological Background of the Invention is a single fluid that can be used directly in several types of application, in particular in the various bodies of self-propelled vehicles such as engines, transmission devices (gearboxes and transfer gearboxes), hydraulic circuits and other secondary organs without modification; in other words, the composition of this fluid is directly adapted for the different types of uses in question.
- Each self-propelled vehicle currently uses a variety of monofunctional lubricating fluids each fulfilling different functions, for example engine oils, gearbox oils, hydraulic oils, etc.
- the formulation of a monofunctional oil conventionally consists of a mixture of mineral, semi-synthetic or synthetic base oils, a package of performance additives, and optionally a viscosity improving polymer and a viscosity improving agent. pour point.
- the shear rates experienced by the lubricant differ from one organ to another.
- the high-pressure hydraulic systems controlling the lifting devices are more shearing than the gearboxes, themselves more shearing than the engines.
- a monofunctional oil is used in another organ than the one for which it was formulated, its viscosity may deviate from the value required for the optimal functioning of this organ.
- Multifunctional oil formulations for engine, gearbox and hydraulic circuit are already marketed under the trade names TOTAL Multi TP, FINA Penta, ELF Noria. Their design is based on a suitable choice of the viscosity improving polymer and its incorporated amount.
- viscosity-improving viscosity-improving polymer If a viscosity-improving viscosity-improving polymer is used, the viscosity will drop very rapidly, even in the low-shear members: the required minimum viscosities in the engine and gearbox will be reduced.
- the viscosity will remain high for a very long time even in the high shear organs: it will take a very long time before the viscosity reaches the best case. a sufficiently low value as requested for example in hydraulic circuits. This can cause long-term cold start problems of the hydraulically controlled lifters.
- the adjustment parameters for simultaneously fulfilling the 3 constraints of minimum viscosities in engine and gearbox, and maximum viscosity in hydraulics are the amount and the nature of the viscosity improving polymer used.
- the new oil must therefore have a high kinematic viscosity, in order to withstand high external temperatures, and keep a sufficient viscosity after shear in the engine and the gearbox, while remaining sufficiently fluid to be acceptable in the hydraulic circuit.
- the invention provides a lubricating composition
- a lubricating composition comprising at least one Group I to II base oil, and a blend of at least two polymers having a Shear Stability Index (PSSI) difference, measured after KRL standardized test. 20 hours at 100 ° C. of at least 25, and having a viscosity profile such that: (a ') at 100 ° C., before shearing, the kinematic viscosity of the new lubricating composition is greater than 15.0 cSt, preferably 15.5 cSt, and less than 16.3 cSt,
- PSSI Shear Stability Index
- the kinematic viscosity of the final lubricant composition is greater than 12.0 cSt, preferably in the range of 12.0 to 15 , 0 cSt, for an oil starting from grade 40, (b) at 100 ° C after KRL -20 hours according to CEC-L-45-A-99 the viscosity of the lubricating composition is greater than 10.0, preferably in the range of 10.0 to 12 , 5, for an oil starting from grade 40, and
- the viscosity of the lubricating composition is between 61 and 75; cSt, for an oil starting from grade 40.
- the invention provides a lubricating composition comprising at least one Group I to II base oil, and a mixture of at least two polymers having a permanent index difference. of shear stability (PSSI), measured after standardized test KRL 20 hours at 100 ° C. of at least 25, and having a viscosity profile such that:
- the kinematic viscosity of the new lubricant composition is greater than 16.3 cSt and less than 21.9 cSt,
- the kinematic viscosity of the final lubricating composition is greater than 15.0 cSt, preferably in the range from 0 to 20.0 cSt, for an oil starting from grade 50,
- the viscosity of the lubricating composition is greater than 10.0 cSt and strictly less than 1 1, 0 cSt, preferably less than or equal to 10.9 cSt, for an oil starting from grade 50, and
- This formulation of multifunctional lubricant can be used to lubricate at the same time different organs of a self-propelled vehicle. More particularly, this unique lubricant serves to lubricate at least the three components that are the engine, the gearbox and the hydraulic circuit, because it has a viscosity profile adapted to the conditions of use required in each target organ. To lubricate both the different target organs of a self-propelled vehicle, this unique lubricant incorporates a blend of polymers having different shear stabilities.
- the lubricating composition comprises at least 50% by weight relative to the weight of the final composition of one or more base oils, of which at least one oil chosen from oils of groups I to II and at least 5%, preferably from 5 to 40%, or even more preferably 5 to 15% by weight relative to the weight of the final composition, of a mixture comprising at least two different polymers of type "A", "B", or "C", each of Polymers of the mixture differing from each other by their belonging to a distinct range of Permanent Shear Stability Index (PSSI) such as:
- PSSI Permanent Shear Stability Index
- the polymers of type "A” have a permanent index of stability in shear (PSSI), measured after standardized test KRL 20 hours at 100 ° C lower than or equal to 40,
- the "B” type polymers have a permanent index of stability in shear (PSSI), measured after standardized test KRL 20 hours at 100 ° C between 40 and 65 excluded terminals;
- the polymers of type "C” have a permanent index of stability in shear (PSSI), measured after standardized test KRL 20 hours at 100 0 C greater than or equal to 65; said composition in which at least two polymers have a difference in PSSI measured after normalized test KRL 20 hours at 100 ° C, of at least 25.
- PSSI permanent index of stability in shear
- the lubricating composition comprises at least 50%, preferably at least 70% by weight of one or more base oils chosen from Group I to II oils.
- each of the polymers of the mixture is obtained from monomeric units of a different chemical nature.
- each polymer of the mixture is obtained from monomeric units of the same chemical nature, and each polymer of the mixture is differentiated from each other by its belonging to a distinct range of permanent stability index. in shear (PSSI) measured after standardized test
- the mixture comprises at least two polymers, the amount of a polymer based on the total weight of the polymer mixture ranges from 10% to 90%.
- the mixture comprises two polymers, one of type A and the other of type C, in which, preferably, the ratio by weight of the mixture of the two polymers PJC ranges from 10/90 to 90/10.
- the lubricant composition according to the invention further comprises from 5 to 30% by weight relative to the weight of the final composition of a functional additive package and optionally less than 1% by weight, of preferably from 0.2% to 0.5% by weight based on the weight of the final composition of a pour point improver.
- the polymers of the mixture are chosen from viscosity-improving type polymers, also called viscosity index or VI improvers, and optionally from pour point-type polymers.
- the viscosity improving polymers are chosen from
- ⁇ -Alpha olefins having a kinematic viscosity at 100 ° C. of greater than 90 cSt, polyisobutenes (PIB), polymeric esters, olefins copolymers (OCP), homopolymers or copolymers of styrene, butadiene or isoprene, polymethacrylates (PMA).
- PEO ⁇ -Alpha olefins
- PIB polyisobutenes
- OCP olefins copolymers
- PMA polymethacrylates
- the pour point-improving polymers are chosen from polymethacrylates (PMA).
- the type A polymers are viscosity improving polymers chosen from polymethacrylates, polyalphaolefins having a kinematic viscosity at 100 ° C. of greater than 90 cSt, polyisobutenes and polymer esters.
- the type C polymers are viscosity improving polymers chosen from polymethacrylates, olefin-co-polymers, hydrogenated styrene-isoprene copolymers and copolymeric esters.
- the B-type polymers are polymethacrylate-type viscosity improving polymers.
- the invention relates to a method for manufacturing a lubricant composition according to the invention in which a mixture comprising at least two different polymers is incorporated in at least one group I to II oil optionally comprising a package of additive and optionally a pour point improver.
- at least one of the polymers of the mixture is a viscosity improver which is incorporated directly into the composition as a separate compound, independently of the additive package.
- all or part of at least one of the viscosity improving polymers of the mixture is incorporated into the composition as part of the additive package. According to another embodiment of the process, all or part of at least one of the viscosity improving polymers of the mixture is incorporated into the composition in the form of a diluent of the additive package.
- the invention relates to the use of a lubricant composition according to the invention as a single fluid for lubricating various bodies of self-propelled vehicles.
- the single fluid serves to lubricate at least three bodies of self-propelled vehicles, the engine, the gearbox and the hydraulic system of the vehicle. More preferably, the single fluid also serves to lubricate the brake control circuit, the onboard compressor and possibly other secondary organs.
- PSSl Permanent Shear Stability Index
- PSSI 100 x (Vi - Vc) / (Vi - Vo), where:
- Vi initial viscosity before shearing of the oil + polymer mixture at 100 ° C.
- Vc viscosity of the oil + polymer mixture after shearing process at
- the shearing process chosen to determine the PSSI of the polymers according to the present invention is the KRL 20 hours test, according to the CEC-L-45-A-99 standard.
- the reference oil chosen for measuring the PSSI of the polymers according to the present invention is a Group I (API classification) base oil with a viscosity of 3.53 cSt at 100 ° C.
- the PSSI of a polymer will be the PSSI measured according to the standard ASTM-D6022-06, measured in a group I dilution oil (according to API classification and viscosity 3.53 cSt at 100 ° C, after KRL test 20 hours, according to CEC-L-45-A-99).
- the Applicant has defined the shear conditions representative of each of the organs in question and the viscosity levels adapted to each member.
- the CEC-L-14-A-93 (or ASTM D6278) standard defines the test representative of the shear conditions in the engine, referred to as the Bosch-30 cycle test.
- the SAE J 300 classification defines the viscosity grades of new motor oils, in particular by measuring their kinematic viscosities at 40 ° C and / or 100 ° C.
- a motor oil is grade 40 according to SAE J 300 if its kinematic viscosity at
- 100 ° C is from 12.5 to 16.3 cSt.
- a motor oil is grade 50 according to SAE J 300 if its kinematic viscosity at 100 ° C is between 16.3 and 21.9 cSt.
- Grade 40 engine oils especially the more viscous ones (and preferably those with a viscosity of more than 15.0 cSt, preferably 15.5 cSt, or grade 50 are generally used in hot climates.
- the ACEA standards define in detail a certain number of additional specifications for engine oils, and in particular require the maintenance of a certain level of viscosity for the oils in operation subjected to shear in the engine.
- the kinematic viscosity of the grade 40 and 50 motor oils measured at 100 ° C., after the Bosch-30 cycle test, must be greater than 12.0 and 15.0 cSt, respectively.
- the lubricants according to the present invention which can be used as engine lubricants have a kinematic viscosity at 100 ° C. of greater than 12.0 cSt, preferably in the range of 12.0 to 15.0 cSt after the Bosch-30 cycle test according to the standard CEC-L-14-A-93 for an oil starting from grade 40.
- these lubricants have a kinematic viscosity at 100 ° C which is greater than 15.0 cSt, preferably in the range of 15.0 to 20.0 cSt, for a starting oil of grade 50.
- oil "from grade 40", or “from grade 50” to designate an oil that satisfies the conditions defined by the classification SAE J 300 for grade 40, or grade 50, respectively, when it is new, that is to say before use, that is to say before having undergone any shear in the body of the vehicle in which it will be put into service or before having undergone shearing under standardized test conditions.
- CEC-L-45-A-99 defines the test representative of the shear conditions in the gearbox, known as the KRL 20 hours test.
- the Applicant has determined, from the oil monitoring test data in use, that a viscosity of a lubricant at 100 ° C. after the standardized test KRL 20 hours greater than 10.0 cSt, preferably in the range ranging from 10.0 to 12.5 cSt, for a grade 40 starting oil was suitable for use in hot climate transmissions.
- a viscosity of a lubricant at 100 ° C after 20 hours normalized test KRL greater than 10.0 cSt and strictly less than 11.0 cSt, preferably less than or equal to 10.9 cSt, for a starting oil grade 50, suitable for use in gearboxes in hot climates 3.
- the Applicant has also determined that the shear conditions experienced by a lubricant in a hydraulic circuit could be represented by the KRL test according to the CEC-L-45-A-99 standard.
- the Applicant has observed that to operate in the hydraulic circuit by overcoming the problem of starting with new oil, especially at low temperature, the viscosity of the lubricant, measured at 40 ° C, should be less than 75 cSt for hot climates after KRL test according to CEC-L-45-A-99 whose duration is reduced from 20 hours to 3 hours, for an oil starting from grade 40 or 50.
- the lubricant compositions according to the present invention are suitable for use in engines, transmissions, and hydraulic systems as they have a viscosity profile that satisfies the following cumulative conditions below.
- grade 40 For an oil starting from grade 40:
- the kinematic viscosity of the new lubricating composition is greater than 15.0 cSt, preferably 15.5 cSt, and less than 16.3 cSt, (a) at 100 ° C.
- the kinematic viscosity of the final lubricating composition is greater than 12.0 cSt, preferably in the range of 12 , 0 to 15.0 cSt, for an oil starting from grade 40, (b) at 100 0 C after KRL -20 hours test according to CEC-L-45-A-99 the viscosity of the lubricating composition is greater at 10.0, preferably in the range of 10.0 to 12.5, for a starting oil of grade 40, and
- the kinematic viscosity of the new lubricant composition is greater than 16.3 cSt and less than 21.9 cSt,
- the kinematic viscosity of the final lubricating composition is greater than 15.0 cSt, preferably in the range from 0 to 20.0 cSt, for an oil starting from grade 50,
- the viscosity of the lubricating composition is greater than 10.0 cSt and strictly less than 1.1 ⁇ cSt, preferably less than or equal to 10.9 cSt, for an oil starting from grade 50, and
- the base oils used in the formulation of lubricants according to the present invention are oils of groups I to II according to API classification, of mineral origin, synthetic or natural, used alone or as a mixture, one of the characteristics of which is to be insensitive to shear, that is to say that their viscosity is not modified under shear. They represent in the composition at least 50% by weight, based on the total weight of the final composition. In addition, their content may represent up to 95% or even 98% in the final composition.
- the lubricants according to the present invention necessarily include at least one base oil selected from Group I to II oils.
- the lubricants according to the present invention comprise at least
- oils of groups I to IL 50%, preferably at least 70% by weight, of one or more base oils chosen from oils of groups I to IL
- the additive packages used in the lubricant formulations according to the invention are conventional and also known to those skilled in the art and meet performance levels defined inter alia by the ACEA (Association of European Automobile Manufacturers) and / or the API. (American Petroleum Institute).
- Antioxidants that prevent the degradation of the oil for example amino or phenolic derivatives
- anti-wear and extreme pressure agents protecting the friction surfaces by chemical reaction with the metal surface, (for example zinc dithiophosphate),
- detergents overbased or not, avoiding the formation of deposits on the surface of metal parts by dissolving secondary oxidation and combustion products, (eg salicylates, phenates or sulfonates). and at least 30% by weight of a diluent consisting of base oil and optionally viscosity improving polymer.
- the weight percentage of additive package based on the weight of the final composition according to the invention is at least 5%, the diluent being included in this percentage.
- the lubricant formulations according to the invention optionally comprise a pour point improver, which may be chosen from the group of polymethacrylates (PMA) with molecular masses generally of between 5,000 and 10,000 daltons.
- PMA polymethacrylates
- these pour point depressant additives are generally provided as more or less dilute formulations in a base oil. In particular, when these formulations are not very diluted, the PMAs are present at contents of about 60%.
- Their use in the polymer blend of the present invention to adjust the viscosity of the lubricant to a certain level after shearing may require the use of higher levels.
- the polymers of types "A" "B” “C” used in a mixture in the lubricants according to the present invention are preferably chosen from the viscosity index or pour point improving improving polymers as described above.
- the viscosity improving polymers used in the present invention correspond to those used in monofunctional oils. They are preferably chosen from poly-alpha-olefins (PAO) with a kinematic viscosity at 100 ° C. of greater than 90 cSt, poly-isobutenes (PIB), polymer esters, olefins copolymers (OCP), homopolymers or copolymers of styrene, butadiene or isoprene, polymethacrylates (PMA).
- PAO poly-alpha-olefins
- PIB poly-isobutenes
- OCP olefins copolymers
- PMA polymethacrylates
- the pour point-improving polymers used in the present invention are preferably selected from polymethacrylates (PMA).
- PMA polymethacrylates
- a viscosity improving polymer is intended to reduce lubricant viscosity variations with temperature. This temperature behavior is characterized by the viscosity index or V.I. (Viscosity Index) of the lubricant. A high V.I. oil will have better viscosity stability as a function of temperature.
- the polymers incorporated in the lubricants according to the present invention have been classified in three groups according to their belonging to a distinct range of PSSI:
- the group of polymers of type "A” comprises the polymers which have a permanent index of stability in shear (PSSI), measured after standardized test KRL 20 hours at 100 ° C lower than or equal to 40. These polymers are insensitive to shearing: these are polymers whose PSSI after standardized test KRL 20 hours at 100 0 C is less than or equal to 40, preferably 0 to 20. This type of polymer will maintain the viscosity at a sufficient level in the engine and in the gearbox, but will also allow the viscosity to drop significantly in the hydraulics.
- PSSI permanent index of stability in shear
- viscosity improving polymers chosen from viscous polyalphaolefins (PAO) (with a viscosity at 100 ° C. of greater than 90 cSt), polyisobutenes (PIB), polymethacrylates (PMA). More specifically, type A polymers are viscosity-improving polymers chosen from polymethacrylates (Viscoplex 0-030, 0-110, 6-054, 8-220, 12-310) and viscous polyalphaolefins (Spectrasyn 1000,300,150). polyisobutenes (Indopole 2100, Lubrizol 3174), polymeric esters (Kenjetlube 2700).
- PAO viscous polyalphaolefins
- PIB polyisobutenes
- PMA polymethacrylates
- type A polymers are viscosity-improving polymers chosen from polymethacrylates (Viscoplex 0-030, 0-110, 6-054, 8-220, 12-
- the group of polymers of type "B” includes polymers which have a permanent index of stability in shear (PSSI), measured after standardized test KRL 20 hours at 100 ° C between 40 and 65 excluded terminals. These polymers of intermediate behavior are said to be sensitive to shear: they are polymers whose PSSI after standardized test KRL 20 hours at 100 ° C is between 40 and 65 excluded terminals. This type of polymer will provide the complement by improving viscosity if necessary.
- PSSI permanent index of stability in shear
- polymethacrylate-type viscosity improvers (Viscoplex 0-220, 3-500, 8-400, 8-251, 8-310) are especially suitable.
- the group of polymers of type "C” comprises the polymers which have a permanent index of shear stability (PSSI), measured after standardized test KRL 20 hours at 100 ° C greater than or equal to 65.
- PSSI permanent index of shear stability
- these polymers are very sensitive to shearing: these are polymers whose PSSI after standardized test KRL 20 hours at 100 ° C is greater than or equal to 65, preferably 65 to 100. This type of polymer will shear very quickly in hydraulics, with a subsequent drop in viscosity and durable lubricant in this body, thus avoiding low temperature starting problems.
- the viscosity-improving polymers selected from the category of copolymer olefins, homopolymers or copolymers of styrene, butadiene, or isoprene are in particular and not limited to. More specifically, the type C polymers are viscosity-improving polymers chosen from polymethacrylates (Viscoplex 7-710), olefin-co-polymers (Paratone 8006, Lubrizol 7077) and hydrogenated styrene-isoprene copolymers (Shellvis 151, 201, 261 and 301), the copolymeric esters (Lubrizol 3702.
- the viscosity profile of the composition according to the invention is obtained when at least two polymers of the mixture are chosen from distinct ranges of PSSIs.
- the polymer mixtures used in the invention consist of at least two polymers, each polymer of the mixture being differentiated from each other by its belonging to a distinct range of permanent shear stability index (PSSI) measured after standardized test KRL 20 hours at 100 ° C.
- PSSI permanent shear stability index
- the shear strength of a polymer is not exclusively related to its chemical nature. It can also be linked to physicochemical parameters. Indeed, parameters such as molecular weights, their distribution (characterized in particular by the polydispersity index of the polymer), the degree of branching of the polymer chains, and in general the morphological characteristics of the polymer have an impact on its shear strength. . Thus, certain compounds of the same chemical nature, such as polymethacrylates for example, can be found in any of the types "A", "B", or "C” described herein.
- This viscosity profile is also obtained when the polymers of the mixture are differentiated either by their chemical nature or by their physicochemical nature.
- this differentiation comes from the preparation of the polymers from monomeric units of distinct chemical nature. For example, a polymethacrylate is chemically different from a polyisobutene.
- each polymer of the mixture is differentiated by its belonging to a distinct range of permanent shear stability index (PSSI) and also by at least one physico-chemical characteristic chosen from the average molecular mass (in number or in weight ) or the molecular weight distribution of said polymer characterized by its polydispersity index or the morphology of the three-dimensional network of said polymer characterized by its degree of crosslinking and / or branching.
- PSSI permanent shear stability index
- the compositions according to the invention comprise a mixture in all proportions of two polymers of A / B or A / C or B / C type. preferably, in this mixture, the amount by weight of one of the polymers of type A or B or C relative to the total weight of polymer in the mixture ranges from 10 to 90%. According to one preferred embodiment the compositions comprise a mixture of two polymers of type A and C in which the ratio by weight A / C ranges from 10/90 to 90/10.
- compositions according to the invention comprise a mixture in all proportions of the three polymers A, B and C.
- the amount by weight of one of the polymers of type A or B or C relative to the weight total of the polymers in the mixture can be at least 10% and at most 80%.
- the compositions according to the invention comprise a mixture of the three polymers A, B and C in which the polymer A is present in an amount of 30 to 45% by weight, the polymer B is present in an amount of 1 to 20% by weight and the polymer C is present in an amount of 30 to 45% by weight, these% being expressed relative to the total weight of the polymers.
- the polymer mixtures used in the invention as defined above represent at least 5%, preferably 5 to 40%, preferably 5 to 15% by weight, based on the weight of the final lubricating composition.
- the minimum amount of a polymer based on the total weight of the final composition is 1%.
- a mixture of at least two polymers of type A, B or C in at least one group I to II oil is generally incorporated at a temperature of between 20 and 100 ° C. and atmospheric pressure. optionally comprising an additive package and optionally a pour point improver.
- the polymers of type "A", "B” or “C” according to the present invention may be incorporated into the composition as a separate component, or may be introduced as a component of the additive package, as an additive or diluent .
- the lubricating compositions according to the invention are prepared by incorporating at least one of the type A, B, or C viscosity improving polymers directly into the composition as a separate additive, independently of the additive package.
- all or part of at least one of the A, B, or C viscosity improving polymers is incorporated into the lubricant as part of an additive package.
- all or part of at least one of the viscosity improving polymers of type A, B or C is incorporated in the lubricant in the form of a diluent of the additive package.
- compositions according to the invention are used as a single lubricant in various members of self-propelled vehicles at a time, in particular members whose shear rates differ.
- the compositions according to the invention have particularly well-suited performance for good hot performance in engines and transmission and for the cold start of the hydraulics.
- a lubricant containing 69.1% by weight of a Group I base oil of viscosity 3.53 cSt at 100 ° C. and 15.4% by weight of a commercial additive package was prepared.
- This additive package is free of type "A", "B” or “C” polymers in accordance with the present invention, and the diluent consists of base oil.
- the lubricant thus prepared is grade 40 according to SAE J300 classification. Its kinematic viscosity at 100 ° C. before shear is 15.66 cSt
- a lubricant containing 68.35% by weight of a Group I base oil having a viscosity of 3.53 cSt at 100 ° C. and 15.4% by weight of a commercial additive package was prepared.
- This additive package is free of type "A", "B” or “C” polymers in accordance with the present invention, and the diluent consists of base oil.
- the lubricant thus prepared is grade 50 according to SAE J300 classification. Its kinematic viscosity at 100 ° C. before shear is 16.59 cSt.
- Table I below gives the viscosity values in cSt of these lubricant compositions: initial, at 100 ° C, before shear at 100 ° C after KRL test -20 hours according to CEC-L-45-A-99, at 100 ° C after Bosch test-30 cycles according to CEC-L-14 - A-93, at 40 0 C after test KRL-3 hours, according to CEC-L-45-A-99 whose test time is reduced to 3 hours.
- Spectrasyn 1000 is a PoIy alpha olefin (PAO)
- SV 301 is a hydrogenated styrene-butadiene copolymer
- the additive package is a commercial additive package for engine oil diluted in Group I oils not containing any type A, B or C polymer according to the present invention. This package makes it possible in particular to formulate engine lubricants with performances at level E3 or higher of the ACEA.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2009241948A AU2009241948B2 (en) | 2008-04-11 | 2009-04-08 | Multipurpose lubricating fluid |
BRPI0910604A BRPI0910604B1 (pt) | 2008-04-11 | 2009-04-08 | fluido lubrificante multifuncional |
MX2010011187A MX2010011187A (es) | 2008-04-11 | 2009-04-08 | Fluido lubricante multifuncional. |
EP09738326A EP2334772A1 (fr) | 2008-04-11 | 2009-04-08 | Fluide lubrifiant multifonctionnel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR2008/000507 WO2009125075A1 (fr) | 2008-04-11 | 2008-04-11 | Fluide lubrifiant multifonctionnel |
FRPCT/FR2008/000507 | 2008-04-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009133292A1 true WO2009133292A1 (fr) | 2009-11-05 |
Family
ID=40451088
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2008/000507 WO2009125075A1 (fr) | 2008-04-11 | 2008-04-11 | Fluide lubrifiant multifonctionnel |
PCT/FR2009/000412 WO2009133292A1 (fr) | 2008-04-11 | 2009-04-08 | Fluide lubrifiant multifonctionnel |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2008/000507 WO2009125075A1 (fr) | 2008-04-11 | 2008-04-11 | Fluide lubrifiant multifonctionnel |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2334772A1 (fr) |
AR (1) | AR071192A1 (fr) |
AU (1) | AU2009241948B2 (fr) |
BR (1) | BRPI0910604B1 (fr) |
MX (1) | MX2010011187A (fr) |
WO (2) | WO2009125075A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2936812B1 (fr) | 2008-10-03 | 2010-10-15 | Total France | Compositions lubrifiantes pour transmissions. |
FR3080383B1 (fr) * | 2018-04-20 | 2020-11-20 | Total Marketing Services | Composition lubrifiante pour moteurs industriels a potentiel fe amplifie |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0225598A2 (fr) * | 1985-12-13 | 1987-06-16 | Röhm Gmbh | Huile lubrifiante multifonctionnelle stable au cisaillement ayant un indice de viscosité |
EP0638611A1 (fr) * | 1993-08-02 | 1995-02-15 | Texaco Development Corporation | Un mélange polymère solide de dimension stable, et une composition d'huile lubrifiante le contenant |
US5888946A (en) * | 1997-12-30 | 1999-03-30 | Chevron U.S.A. Inc. | Tractor hydraulic fluid |
US20040038850A1 (en) * | 2000-07-31 | 2004-02-26 | Chor Huang | Viscosity improver compositions providing improved low temperature characteristics to lubricating oils |
EP1637580A1 (fr) * | 2004-09-17 | 2006-03-22 | Afton Chemical Corporation | Additifs modificateurs de l'indice de viscosité pour des compositions lubrifiantes |
WO2006068866A1 (fr) * | 2004-12-22 | 2006-06-29 | The Lubrizol Corporation | Procede de regulation de viscosite |
EP1916291A1 (fr) * | 2006-10-24 | 2008-04-30 | Total France | Fluide lubrifiant multifonctionnel |
-
2008
- 2008-04-11 WO PCT/FR2008/000507 patent/WO2009125075A1/fr active Application Filing
-
2009
- 2009-04-08 EP EP09738326A patent/EP2334772A1/fr not_active Withdrawn
- 2009-04-08 AU AU2009241948A patent/AU2009241948B2/en active Active
- 2009-04-08 BR BRPI0910604A patent/BRPI0910604B1/pt active IP Right Grant
- 2009-04-08 AR ARP090101251A patent/AR071192A1/es not_active Application Discontinuation
- 2009-04-08 MX MX2010011187A patent/MX2010011187A/es active IP Right Grant
- 2009-04-08 WO PCT/FR2009/000412 patent/WO2009133292A1/fr active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0225598A2 (fr) * | 1985-12-13 | 1987-06-16 | Röhm Gmbh | Huile lubrifiante multifonctionnelle stable au cisaillement ayant un indice de viscosité |
EP0638611A1 (fr) * | 1993-08-02 | 1995-02-15 | Texaco Development Corporation | Un mélange polymère solide de dimension stable, et une composition d'huile lubrifiante le contenant |
US5888946A (en) * | 1997-12-30 | 1999-03-30 | Chevron U.S.A. Inc. | Tractor hydraulic fluid |
US20040038850A1 (en) * | 2000-07-31 | 2004-02-26 | Chor Huang | Viscosity improver compositions providing improved low temperature characteristics to lubricating oils |
EP1637580A1 (fr) * | 2004-09-17 | 2006-03-22 | Afton Chemical Corporation | Additifs modificateurs de l'indice de viscosité pour des compositions lubrifiantes |
WO2006068866A1 (fr) * | 2004-12-22 | 2006-06-29 | The Lubrizol Corporation | Procede de regulation de viscosite |
EP1916291A1 (fr) * | 2006-10-24 | 2008-04-30 | Total France | Fluide lubrifiant multifonctionnel |
Also Published As
Publication number | Publication date |
---|---|
AR071192A1 (es) | 2010-06-02 |
EP2334772A1 (fr) | 2011-06-22 |
BRPI0910604A2 (pt) | 2016-06-14 |
WO2009125075A1 (fr) | 2009-10-15 |
AU2009241948B2 (en) | 2014-05-29 |
BRPI0910604B1 (pt) | 2018-10-16 |
AU2009241948A1 (en) | 2009-11-05 |
MX2010011187A (es) | 2010-11-12 |
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