WO2019063599A1 - Lubricating oil composition for internal combustion engine - Google Patents
Lubricating oil composition for internal combustion engine Download PDFInfo
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- WO2019063599A1 WO2019063599A1 PCT/EP2018/076094 EP2018076094W WO2019063599A1 WO 2019063599 A1 WO2019063599 A1 WO 2019063599A1 EP 2018076094 W EP2018076094 W EP 2018076094W WO 2019063599 A1 WO2019063599 A1 WO 2019063599A1
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- oil composition
- base oil
- lubricating oil
- viscosity index
- viscosity
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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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/041—Mixtures of base-materials and additives the additives being macromolecular compounds only
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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
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
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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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- 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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- 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
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen 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
- 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
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—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 type
- C10M2209/084—Acrylate; Methacrylate
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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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
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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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
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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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
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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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
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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
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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
- C10N2020/04—Molecular weight; Molecular weight distribution
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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
- C10N2020/071—Branched chain compounds
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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
- C10N2030/02—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
- C10N2030/04—Detergent property or dispersant property
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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
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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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
- C10N2030/08—Resistance to extreme temperature
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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
- C10N2030/54—Fuel economy
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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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
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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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/252—Diesel engines
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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
- C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
- C10N2060/14—Chemical after-treatment of the constituents of the lubricating composition by boron or a compound containing boron
Definitions
- the present invention relates to a lubricating oil composition for internal combustion engines.
- the present invention relates to a lubricating oil composition for automobile engines
- the present invention relates to a lubricating oil
- composition for the internal combustion engines that is excellent in fuel efficiency, oil consumption control and detergency.
- crankcase lubricating oil A problem with crankcase lubricating oil is that the lubricating oil is liable to escape from the crankcase due to so-called blow-by gas .
- the blow-by gas or such a gas / lubricat ing oil mixture is preferably recycled to the engine rather than being discharged to the atmosphere. In some engines, such recycling is carried out by injecting the blow-by gas into an air intake system of the engine so that the lubricating oil burns in piston chambers. Recycling of blow-by gas solves the problem of emissions, whereas it may cause problems such as formation of deposits in the air intake system. For example, when the deposits form in an air compressor, the compressor does not work well and is further susceptible to damage. Also, for
- viscosity characteristics by using friction modifiers to contribute to friction reducing performance, and by using viscosity index improvers to reduce agitation resistance and to maintain an oil film at high
- An object of the present invention is to provide a lubricating oil composition for internal combustion engines for further improving the invention according to JP2017119787 , the lubricating oil composition having a higher viscosity index and oil film retentivity so as to cope with advancing downsizing and high
- the present invention relates to a lubricating oil composition for internal combustion engines, comprising:
- a base oil composition containing a GTL base oil as a main component, and having %Cn of 14 to 25% and an aniline point of 120 to 126°C;
- a comb-like polymethacrylate based viscosity index improver having a weight average molecular weight (Mw) of 400,000 or more
- composition is 0.3 mass% or less based on a total weight of the lubricating oil composition.
- a kinematic viscosity at 100°C. of the base oil composition may be 3.5 to 8 mm2/s.
- the lubricating oil composition may have SAE viscosity grade of OW-20 or 5W-20 and a viscosity index of 180 or more, or the SAE viscosity grade of 5W-30 and the viscosity index of 220 or more.
- a viscosity index of the base oil composition may be 120 or more .
- composition content of constituent
- properties of the lubricating oil composition for internal combustion engines of the present invention will be described in detail, but the present invention is in no way limited by these.
- the lubricating oil composition of the present invention contains a base oil composition containing a GTL base oil, a comb-like PMA based viscosity index improver, and other constituents if necessary.
- the base oil composition containing only GTL base oil or a mixed base oil composition containing GTL base oil as a main component is used as the base oil.
- the base oil composition containing a GTL base oil as a main component means that the content of GTL base oil is 50 mass% or more, 60 mass% or more, 70 mass% or more, 80 mass% or more, or 90 mass% or more based on the total amount of the base oil composition.
- the upper limit value is not particularly limited and is 100 mass% or less.
- the kinematic viscosity at 100°C. of the base oil composition according to the present invention is not particularly limited and preferably is 3.5 to 8.0 mm2/s, more preferably 3.5mm 2 /s or more, 4.0 mm 2 /s or more, 4.5 mm 2 /s or more, 5.0 mm 2 /s or more, 5.5 mm 2 /s or more, 6.0 mm 2 /s or more, or 6.5mm 2 /s or more.
- the kinematic viscosity at 40°C., the kinematic viscosity at 100°C. and the viscosity index are measured in accordance with JIS K 2283-1993, respectively.
- the %Cn of the base oil composition according to the present invention is 14 to 25, more preferably 14 or more, 15 or more or 16 or more, and preferably 25 or less, 24 or less, 23 or less, 22 or less or 21 or less.
- the %Cn of the base oil composition is 14 to 25, more preferably 14 or more, 15 or more or 16 or more, and preferably 25 or less, 24 or less, 23 or less, 22 or less or 21 or less.
- lubricating oil composition may be unfavorably
- the %Ca of the base oil composition according to the present invention is not particularly limited.
- oxidative stability it is preferably 10 or less, 5 or less, 3 or less, 2 or less, 1 or less, 0.5 or less, 0.3 or less, 0.1 or less or substantially 0.
- the % Cp of the base oil composition according to the present invention is not particularly limited, and it is the balance of %Cn and %Ca described above.
- %Cp is 86 or less, 85 or less, or 80 or less and 65 or more, 70 or more, or 75 or more.
- %Cn, %Ca and %Cp represent the percentage of naphthene carbon number to the total carbon number
- the aniline point of the base oil composition according to the present invention is 120 to 126°C.
- the aniline point in the present invention is measured by a method in accordance with ASTM D611 and JIS K2256.
- the viscosity index of the base oil composition according to the present invention is not particularly limited. However, it is preferable to have a high viscosity index because of the social demands for low viscosity at low temperature for fuel saving.
- composition is preferably 110 or more, 115 or more, 120 or more, or 125 or more.
- the upper limit is not
- the sulfur content of the base oil composition according to the present invention is not particularly limited. However, if the sulfur content of the base oil composition is too high, high temperature detergency, oxidative stability and thermal stability of the lubricating oil composition may be adversely affected. Therefore, the sulfur content is preferably 1 mass% or less, 0.5 mass% or less, 0.3 mass% or less, 0.2 mass% or less, 0.1 mass% or less, or substantially 0 mass% based on the total weight of the base oil composition. Note that, "substantially 0 massl" in the present invention means not only strictly zero but also
- liquefying fuels from natural gas used as a main component for the base oil of the lubricating oil composition according to the present invention Using such base oils as main component makes it possible, in the framework of the present invention, to improve oxidative stability as well as reducing evaporative losses .
- the kinematic viscosity at 100°C. of the GTL base oil is not particularly limited. Typically it is between 3.5 and 8.0 mm 2 /s. If the kinematic viscosity at 100°C. of the main component GTL base oil falls within this range, there is an advantage that the kinematic viscosity at 100°C. of the base oil composition can be easily adjusted within the aforementioned range.
- a single GTL base oil having a kinematic viscosity at 100°C. of 3.5 to 8.0 mm 2 /s may be used.
- two or more kinds of GTL base oils may be mixed and prepared so that the kinematic viscosity at 100°C. falls within this range.
- two kinds are preferably mixed, i.e. a GTL base oil (al) having a kinematic viscosity at
- the viscosity index of the mixed GTL base oil is preferably from 120 to 180, more preferably from 120 to 150.
- the total sulfur content is pre ferably less than 10 ppm by mas s , and the total nitrogen content is more preferably less than 1 ppm by mas s .
- An example of such a GTL base oil product is Shell XHVI (registered trademark) .
- the base oil composition according to the present invent ion may contain a base oil other than the GTL base oil .
- the composition may be ad usted by blending other base oils so as to satisfy the above properties .
- either mineral oils or synthetic oils may be used, and any of Groups I to V, which are the base oil classification de fined by AP I , may be used . Mixture s of these may also be used .
- the base oil composition preferably contains the base oil belonging to Group I I .
- the base oil of the group 11 is a mine ral base oil having a saturated hydrocarbon (ASTM D 2007 ) of 90 vol . % or more, a sulfur content (ASTM D 1552) of 0.03 mas s % or less, and a viscosity index (ASTM D 2270) of
- Group I I base oil has low unsaturated carbon content and sulfur content , has sufficient oxidative stability and detergency, and has a certainl Cn .
- % Cn of the base oil compos it ion can easily be adjusted within the above range without impairing the properties of the
- a base oil composition containing or made up of a GTL base oil and a base oil belonging to Group 11 of AP I classification and sat is fying the above-ment ioned properties .
- the base oil composition obtained by blending in particular, a Group 11 base oil having %Cn not less than the above-mentioned lowe r limit value is blended in a GTL base oil having %Cn less than the lower limit value so that the %Cn of the base oil composition falls within the above range ) the Group II base oil with the GTL base oil so that the %Cn of the base oil composition falls within the above range .
- the content of the Group I I base oil is not particularly limited as long as the base oil composition satisfies the above properties .
- it is 1 mas s % or more , 3 mas s % or more , 5 mas s % or more or 10 mas s % or more , and 50 mas s % or less, 45 mas s% or less, 40 mas s% or less, 35 mas s % or less, 30 mas s% or less, 25 mas s% or less or 20 mas s % or less .
- the lubricating oil composition of the present invent ion include s a comb-like polymethacrylate based viscosity index improver (hereinafter also referred to as a comb PMA) .
- the comb-like polymer represents a polyme r having a plurality of extended s ide chains in a comb form relative to the main polymer chain .
- the viscosity index improvers of the present invent ion include , among these comb-like polymer s , viscosity index improvers which are comb-1 ike polymethacrylate- based polymers .
- improver means a polymer having a weight average molecular weight (Mw) of not less than 50,000.
- the weight average molecular weight (Mw) is obtained, for example , using Shodex GPC-101 high- performance liquid chromatography manufactured by Showa Denko K.K. More specifically, the weight -average molecular weight (weight average molecular weight in terms of polystyrene ) can be analyzed (calculated) by using the range corresponding to the peak molecular weight , as suming that the temperature is 40 ° C .
- the detector is a differential re fract ive index detector (RI)
- the carrier flow rate is THF -1.0 ml/min (Ref 0.3 ml /min )
- the sam le injection amount is 100 ⁇
- the column is ⁇ KF-G (Shodex) X 1, KF-805 L (Shodex X 2) ⁇ .
- a polymer de s cribed in JP -A-2010-532805 may be appropriately used . Also, its production method is not part icularly limited .
- the comb-like polymethacrylate based viscosity index improver according to the present invent ion preferably has a weight average molecular weight of 400,000 to 600, 000, more preferably 400,000 to 500, 000, and most preferably 400,000 to 450,000.
- the PSSI (permanent shear stability index ) of comb-1 ike polymethacrylate based viscosity index improver according to the present invention is
- invent ion means a permanent shear stability index of the polymer calculated based on the data measured by ASTM D 6278-02 in accordance with ASTM D 6022-01.
- po1ymethacrylate based viscosity index improver include Viscoplex 3-201 (registered trademark) , Vi s coplex 3-220
- the lubricating oil composition of the present invent ion may also include viscosity index improvers other than the comb-like polymethacrylate based
- viscosity index improvers include s one or more polymers selected from the group consisting of non-comb-like PMA (polymethacrylates ) , OCP (olefin copolymers ) and SCP (styrene-diene copolymers ) .
- the non-comb-like PMA (polymethacrylates ) -based viscosity index improver is not particularly limited and those known in art may be used . Those having a weight average molecular weight of 100 , 000 to 400,000 are preferred . Specific examples of such PMAs include those described in JP 2014125569.
- the OCP (olefin copolymers) -based viscosity index improver is not particularly limited and those known in art may be used . Those having a weight average
- OCP s molecular weight of 50 , 000 to 300 , 000 are preferred .
- Specific example s of such OCP s include those de scribed in JP2014125569.
- the SCP styrene- diene copolymers
- viscosity index improver is not particularly limited and those known in art may be used . Those having a weight average molecular weight of 200 , 000 to 1 , 000 , 000 are preferred . Specific examples of such SCP s include Infineum (registered trademark) , SV 150, and the like .
- Such viscosity index improvers polymers having a weight average molecular weight of not less than
- the liquid solvent is not particularly limited, but is typically a carrier oil which is a Group 11 base oil or a Group III base oil .
- the viscosity index of the lubricating oil composition is ext remely improved by including the above comb-like PMA in the base oil compos it ion containing a GTL base oil having %Cn within a predetermined range .
- the viscosity index of the base oil composition is ext remely improved by including the above comb-like PMA in the base oil compos it ion containing a GTL base oil having %Cn within a predetermined range .
- the base oil composition having %Cn not less than the above lower limit has a lower viscosity index as compared to the base oil compos it ion having %Cn less than the above lower limit value .
- the viscosity index of the lubricating oil composition was larger for those derived from the former base oil compos it ion .
- Reduct ion in the amount of comb-like PMA content also suppresses the s ludge formation .
- the lubricating oil composition of the present invent ion may contain constituent s other than the above-ment ioned depending on the purpo se of use .
- Examples of the other constituent s include detergent s , dispersants , anti-wear agent s , metal deactivators , antioxidant s , defoaming agent s and the like .
- the lubricating oil composition of the present invent ion may contain a boron-containing detergent as a detergent .
- the boron-containing detergent include s , but is not particularly limited to , a boric acid-containing alkaline earth metal salt . More specifically, a borated alkaline earth metal alkyl salicylate detergent and a borated alkaline earth metal alkyl toluene sulfonate detergent may be ment ioned . Borated calcium alkyl toluene sulfonate is particularly preferable .
- detergent s may be manufactured in accordance with the method described in JP-A-2008-297547 ) .
- Othe r detergent s (boron-free detergent s ) other than the boron-containing detergent include , for example, metallic detergent s .
- metallic detergent s include alkaline earth metal sulfonates , alkaline earth metal phenates , alkaline earth metal salicylates , alkaline earth metal naphthenates and the like .
- Example s of the alkaline earth metals include calcium and magne s ium . These may be used s ingly or in combinat ion of two or more . Usually, sulfonates , phenates , and salicylates of calcium or magnesium are preferably used .
- Example s of the alkaline earth metal sulfonates include alkaline earth metal salt s , especially
- magnes ium salt s , calcium salts and the like , of alkyl aromat ic sulfonic acids having a straight chain or branched alkyl groups of carbon number 1 to 30 ,
- the production method thereof is arbitrary, for example , it may be obtained by
- Example s of the alkaline earth metal phenate s include alkaline earth metal salt s , especially calcium salt s , of alkylphenol s , alkylphenol sulphide s and alkylphenol Mannich reaction products having straight chain or branched alkyl groups of carbon number 4 to 30, preferably 6 to 18.
- Example s of the alkaline earth metal salicylates include alkaline earth metal salt s , particularly preferably magne s ium salts and/or calcium salt s , of alkyl salicylic acids having a straight chain or branched alkyl groups of carbon number 1 to 30, preferably 6 to 18.
- the base numbers of these may be freely chosen according to the type and purpose of the corresponding lubricat ing oil .
- the lubricating oil composition of the present invent ion may contain an ashless dispersant or a boron- containing dispersant as a dispersant .
- the ashle s s di sper sant or the boron-containing dispersant is, for example , a polybutenyl succinimide based, a polybutenyl succinamide based, a benzylamine based, a succinate ester based dispersant or the like , or a borated product thereof .
- Polybutenyl succinimides are obtained from polybutene s obtained by polymerisation of high-purity isobutene or mixture s of 1-butene and isobutene using a fluorinated boron based catalyst or an aluminium chloride based catalyst , and the product s having a vinylidene structure at the polybutene terminals are normal ly contained in the amount of 5 to 100 mol .
- polybutenyl succinimide derivatives examples include so- called modi fied succinimide s in which some or all of the amino and/or imino groups present have been
- boric acid compounds such as boric acid or oxygen- containing organic compounds such as alcohols , aldehyde s , ketones , alkylphenol s , cyclic carbonates and organic acids act on the aforementioned polybutenyl succinimides .
- Example s of anti-wear agent s impart ing wear resistance and ext reme pre s sure property that can be used in the lubricating oil composition of the present invent ion include zinc dithiophosphate s ( ZnDTP ) .
- Examples of ZnDTP generally include zinc
- dialkyldithiophosphates zinc diaryldithiophosphates and zinc arylalkyldithiophosphates .
- the alkyl groups here may be straight-chain or branched .
- Example s of the alkyl groups of the zinc dialkyldithiophosphate s that can be used include zinc dialkyldithiophosphate s having primary or secondary alkyl groups of carbon number 3 to 22 or alkylaryl groups substituted with alkyl groups of carbon number 3 to 18 may be used .
- zinc dialkyl dithiophosphate examples include of zinc dipropyl dithiophosphate , zinc dibutyl dithiophosphate , zinc dipentyl dithiophosphate, zinc dihexy1 dithiophosphate , zinc diisopentyl
- the metal deactivators that can be used in the lubricat ing oil composition of the present invent ion include benzotriazoles and benzotriazole derivatives such as alkyl-tolyltriazoles, and benz imidazoles and benz imidazole derivatives such as
- tolimidazoles Further example s include indazole derivatives such as tolylindazoles , benzothiazoles and benzothiazole derivatives such as tolylthiazoles .
- lubricat ing oil composition of the present invent ion include amine-based ant ioxidant s and phenol-based antioxidant s .
- Example s of amine-based ant ioxidant s include dialk 1 diphen 1amine s such as p , p ' -dioctyl- diphenylamine (Nonflex OD-3 manufactured by Seiko Chemical Ltd . ) , p, p ' -di- a- methylbenzyl diphenylamine and N-p-butylphenyl-N-p ' -octylphenylamine ,
- monoalkyldiphenylamine s such as mono-t - butyldiphenylamine and monooctyldiphenylamine
- bis (dialkylphenyl) amine s such as di (2,4- diethylphenyl) amine and di (2-ethyl-4-nonylphenyl) amine
- alkylphenyl-l-naphthylamine s such as octyl-phenyl-1- naphthylamine and N-t -dodecylphenyl-l-naphthylamine , aryl naphthylamine s such as 1 - naphthylamine , phenyl-1 naphthylamine , pheny1-2 -naphthylamine , N-hexylphenyl-2 naphthylamine and N-octylpheny1-2 -naphthylamine , phenylenediamine s such as , ' -diisopropyl-p- phenylenediamine and , N' -diphenyl-p- phenylenediamine , and phenothiazines such as
- Phenothiazine (manufactured by Hodogaya Chemical Ltd . ) and 3 , 7-dioctylphenothiazine .
- Phenol-based antioxidants include 2-t-butylphenol, 2-t- butyl-4 -methylphenol, 2 -t -butyl -5 -methylphenol , 2,4-di-t- butylphenol , 2, 4 -dimethyl-6-t -butylphenol , 2-t-butyl-4- methoxyphenol , 3-t -but yl-4 -methoxyphenol , 2 , 5-di-t- butylhydroquinone (Antage DBH, manufactured by Kawaguchi Chemical Industry Co .
- 2, 6-di-t- butyl- 4-alkylphenols such as 2, 6-di-t-butylphenol , 2, 6-di-t -butyl-4 -methylphenol and 2, 6-di-t -butyl-4- ethylphenol
- 2, 6-di-t -butyl-4- alkoxyphenol s such as 2, 6-di-t -butyl-4 -methoxyphenol and 2, 6 -di-t -butyl -4- ethoxyphenol .
- n- dodecyl-3- (3, 5 - di-t -but yl-4 -hydroxyphenyl ) propionate and 2 ' - ethylhexyl-3- (3, 5 -di-t -but yl-4 -hydroxyphenyl) propionate
- benzenepropanoic acid 3 -bis (1, 1 - dimethyl -ethyl ) -4-hydroxy-C7 ⁇ C9 side-chain alkyl ester
- the re are bi sphenol s such as 4 , 4 ' -butylidenebis (3 -methyl- 6-t- butylphenol ) (Antage W-300, manufactured by Kawaguchi Chemical
- Example s of the defoaming agent that can be used in the lubricating oil composition of the present invent ion include organosilicates such as
- dimethylpolysiloxane diethylsilicate, fluorosilicone and the like
- non-silicone based defoaming agent s such as polyalkyl acrylate .
- the content of the base oil is preferably from 60 to 90 mas s % , more preferably from 65 to 90 mas s % , furthe r preferably from 70 to 85 mass , based on the total mas s of the lubricating oil compos it ion .
- total viscosity index improver content is not
- it may be 0.05 to 20 mas s I and the like based on the total mas s of the lubricating oil composition .
- the content of the comb-like PMA is not
- part icularly limited It is preferably from 1.0 to 10 mas s % , more preferably from 1.5 to 9.0 mas s % , and furthe r preferably from 2.0 to 8.0 mas s% , based on the total mas s of the lubricating oil compos it ion .
- the content thereof is preferably in the range of 2.0 to 7.0 mass%, 2.0 to 6.0 massl, 2.0 to 5.0 massl, and 3.0 to 4.0 mas s % .
- the content thereof is preferably in the range of 3.0 to 8.0 mas s % , 4.0 to 8.0 massl, 5.0 to 8.0 massl, and 6.0 to 8.0 massl
- the content of the non-comb-like PMA is not particularly limited, but the rat io of the non-comb ⁇ like PMA content to the total viscosity index improver content ( non-comb-like PMA content /total viscosity index improver content ) is pre fe rably not more than 0.7.
- the content of the OCP is not particularly limited, but the rat io of the OCP cont ent to the total content index improver content ( OCP content /total viscosity index improver content ) is preferably not more than 0.2.
- the content of the SCP is not particularly limited, but the ratio of the SCP content to the total content index improver content (SCP content /total viscosity index improver content ) is preferably not more than 0.3.
- non-comb-like PMA polymethacrylate s
- SCP styrene-diene copolymers
- OCP olefin
- copolymers are included as viscosity index improvers , and these satisfy at least one (but preferably all ) of the aforementioned range s , it is possible within the framework of this invent ion to achieve the effects of the invent ion and also to reduce manufacturing costs .
- the total amount of the boron-containing detergent and the boron-containing dispersant (total ) is preferably, for example , 0.025 mas s % or more based on the total amount of the composition in terms of boron content (total value ) .
- the upper limit value is , for example , 0.1 mas s % or less and 0.050 mass% or less .
- the content of the metallic detergent is preferably from 0.05 to 0.3 mass%, more preferably from 0.1 to 0.2 mass% in terms of the metal amount based on the total mas s of the lubricating oil composition .
- the content of the ashle s s dispersant , s ingly or in combinat ion is preferably such an amount as to provide , for example , 0.01 to 0.3 mas s % of nit rogen based on the total mas s of the lubricating oil
- the content of the anti-wear agent (for example ,
- ZnDTP ) singly or in combinat ion , is preferably in the range of 0.01 to 0.10 mass%, more preferably 0.05 to 0.08 massl, as the phosphorus (P) amount based on the total mas s of the lubricating oil compos it ion .
- the content of the metal deactivator, singly or in combinat ion is preferably in the range of 0.01 to 0.5 mas s % based on the total mas s of the lubricating oil compos it ion .
- the content of the ant ioxidant is preferably in range of 0.01 to 2 mas s% based on the total mas s of the lubricating oil
- the content of the defoaming agent is preferably in the range of 0.0001 to 0.01 mas s % based on the total mas s of the lubricating oil composition .
- the lubricating oil composition according to the present invent ion containing the above constituents in the above composition may be easily ad usted to satisfy or fulfil the following properties naturally .
- compos it ion is adjusted so as to be 0.3 mas s % or less, 0.28 mass% or less , 0.26 massl or less or 0.25 massl or less based on the total weight of the lubricating oil compos it ion from the viewpoint s of high temperature detergency , oxidative stability and thermal stabilit .
- the viscosity of the lubricating oil composition is not particularly limited .
- the composition is pre ferably ad usted such that the SAE viscosity grade conform is OW-20 or 5W-20 or 5W-30.
- the viscosity index of the lubricating oil compos it ion is not particularly limited .
- Ho e e r it is preferable to have a high viscosity index because of the social demands for low viscosity at low temperature for fuel saving. Therefore, the viscosity index of the lubricating oil composition is preferably 180 or more.
- the upper limit is not particularly limited, but it is usually 300 or less. If the SAE viscosity grade is 5W- 30, the viscosity index of the lubricating oil
- composition is preferably 220 or more.
- Base oil-1 XHVI-4 RL (GTL oil)
- Base oil-2 XHVI-8RL (GTL Oil)
- Base oil-3 Kixx 150 N (Group II base oil )
- Base oil-4 Kixx 600 N (Group II base oil )
- Base oil-5 HVI 60 (Group I base oil )
- Base oil-6 HVI 160 S (Group I base oil)
- Viscosity index improver solut ion A solution containing a comb-like PMA based viscosity index improver having a weight average molecular weight of 400, 000 ( comb-like PMA concentration 60 mass%) .
- Defoaming agent solution A solution containing dimethyl polysiloxane having a concent rat ion of 3 mas s %
- Additive Package Additive package equivalent to JASO DL-1 having sulfated ash content of 0.46 mass% when 11.7% was added
- the oil film thickness was measured using an EHD 2 oil film thickness meter manufactured by PCS .
- the oil film thickness ( nm) at a rotational speed of 20 mm/ s was measured by rotat ing from a rotation speed of 3000 mm/ s to 10 mm/ s under an oil temperature of 120 ° C . , a sliding ratio of 20% and a load of 20 .
- the larger the numerical value the thicker the oil film, and the better the lubricating property .
- composition continued for 3 hours by the rotating blade in a cycle of "rotating for 15 seconds at a speed of 1000 rpm and then stopping for 45 seconds", at an oil temperature of 100°C. and an aluminum panel temperature of 300°C. After 3 hours, the mass (mg) of the deposit adhering to the aluminum panel was measured. The smaller the numerical value, the better the detergency.
- the kinematic viscosity (KV40) at 40°C, the kinematic viscosity (KV100) at 100°C., the viscosity index (VI), the CCS viscosity at -30°C. (CCS-30 ° C.) of the lubricating oil composition of each Example and Comparative Example were measured. Also, the calcium, magnesium, zinc, phosphorus, molybdenum, boron,
- compositions of Example s satisfying this specification satisfy all of the viscosity index, the oil film thickness, and the high temperature detergency, whereas the compositions of the Comparat i e Example s that do not satisfy this specification are inferior in either viscosity index, oil film thickne s s , or high
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- Chemical & Material Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
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- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Priority Applications (5)
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US16/651,059 US20200224118A1 (en) | 2017-09-28 | 2018-09-26 | Lubricating oil composition for internal combustion engine |
CN201880059831.2A CN111094525B (en) | 2017-09-28 | 2018-09-26 | Lubricating oil composition for internal combustion engine |
BR112020005861-0A BR112020005861B1 (en) | 2017-09-28 | 2018-09-26 | LUBRICANT OIL COMPOSITION FOR INTERNAL COMBUSTION ENGINE |
EP18780072.7A EP3688126A1 (en) | 2017-09-28 | 2018-09-26 | Lubricating oil composition for internal combustion engine |
RU2020112918A RU2780321C2 (en) | 2017-09-28 | 2018-09-26 | Lubricating oil composition for internal combustion engine |
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JP2017188903A JP6895861B2 (en) | 2017-09-28 | 2017-09-28 | Lubricating oil composition for internal combustion engine |
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US (1) | US20200224118A1 (en) |
EP (1) | EP3688126A1 (en) |
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EP2186871A1 (en) * | 2009-02-11 | 2010-05-19 | Shell Internationale Research Maatschappij B.V. | Lubricating composition |
JP5808517B2 (en) * | 2009-06-04 | 2015-11-10 | Jx日鉱日石エネルギー株式会社 | Lubricating oil composition |
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US20160010023A1 (en) * | 2013-03-06 | 2016-01-14 | Shell Oil Company | Lubricating composition |
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2017
- 2017-09-28 JP JP2017188903A patent/JP6895861B2/en active Active
-
2018
- 2018-09-26 EP EP18780072.7A patent/EP3688126A1/en active Pending
- 2018-09-26 WO PCT/EP2018/076094 patent/WO2019063599A1/en unknown
- 2018-09-26 US US16/651,059 patent/US20200224118A1/en not_active Abandoned
- 2018-09-26 CN CN201880059831.2A patent/CN111094525B/en active Active
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RU2020112918A (en) | 2021-10-04 |
BR112020005861A2 (en) | 2020-09-29 |
JP2019065093A (en) | 2019-04-25 |
CN111094525A (en) | 2020-05-01 |
RU2020112918A3 (en) | 2022-03-30 |
EP3688126A1 (en) | 2020-08-05 |
CN111094525B (en) | 2022-06-10 |
US20200224118A1 (en) | 2020-07-16 |
JP6895861B2 (en) | 2021-06-30 |
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