WO2019166979A1 - Composition d'huile lubrifiante assurant une protection contre l'usure à faible viscosité - Google Patents

Composition d'huile lubrifiante assurant une protection contre l'usure à faible viscosité Download PDF

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Publication number
WO2019166979A1
WO2019166979A1 PCT/IB2019/051610 IB2019051610W WO2019166979A1 WO 2019166979 A1 WO2019166979 A1 WO 2019166979A1 IB 2019051610 W IB2019051610 W IB 2019051610W WO 2019166979 A1 WO2019166979 A1 WO 2019166979A1
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WIPO (PCT)
Prior art keywords
lubricating oil
carbon atoms
oil composition
mol
dispersant
Prior art date
Application number
PCT/IB2019/051610
Other languages
English (en)
Inventor
Richard Hogendoorn
Jeroen Augustinus VAN LEEUWEN
Alexander B. Boffa
Original Assignee
Chevron Oronite Technology B.V.
Chevron Oronite Company Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chevron Oronite Technology B.V., Chevron Oronite Company Llc filed Critical Chevron Oronite Technology B.V.
Priority to EP19713854.8A priority Critical patent/EP3759201A1/fr
Priority to CN201980016656.3A priority patent/CN112135893A/zh
Priority to JP2020545721A priority patent/JP2021515081A/ja
Priority to SG11202008101XA priority patent/SG11202008101XA/en
Priority to CA3092280A priority patent/CA3092280A1/fr
Publication of WO2019166979A1 publication Critical patent/WO2019166979A1/fr
Priority to JP2023203625A priority patent/JP2024015129A/ja

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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
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • 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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/48—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring
    • C10M129/54—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring containing hydroxy groups
    • 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
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/04—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing propene
    • 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
    • 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
    • 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
    • C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C10M2205/022—Ethene
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C10M2205/024—Propene
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    • 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
    • C10M2205/0285—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 used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/26—Overbased carboxylic acid salts
    • C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/2805—Esters used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/28—Amides; Imides
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    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/028—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/046—Overbasedsulfonic acid salts
    • 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
    • C—CHEMISTRY; METALLURGY
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    • 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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    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/12—Groups 6 or 16
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    • 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
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C—CHEMISTRY; METALLURGY
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    • 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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    • 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
    • C—CHEMISTRY; METALLURGY
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/40—Low content or no content compositions
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines
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    • C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
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    • 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 disclosed technology relates to lubricants for internal combustion engines, particularly those for spark ignition engines
  • Engine oil is blended with various additives to satisfy various performance requirements.
  • One well known way to increase fuel economy is to decrease the viscosity of the lubricating oil
  • this approach is now reaching the limits of current equipment capabilities and specifications.
  • adding organic or organometallic friction modifiers reduces the surface friction of the lubricating oil and allows for better fuel economy.
  • these additives often bring with them detrimental effects such as increased deposit formation, seals impacts, or they out-compete the anti-wear components for limited surface sites, thereby not allowing the formation of an anti-wear film, causing increased wear.
  • HTHS high temperature high- shear
  • W02015041891 discloses a method for reducing aqueous phase separation of an emulsion comprising ethanol-based fuel and a lubricating oil comprising molybdenum ester amide complex and a dispersant polyalkyl (meth) acrylate.
  • US 6303548 discloses an SAE 0W-40 lubricant comprises the base oil and a mixture of polymethacylate and olefin copolymer or hydrogenated diene VI improvers.
  • WO2014136643 discloses a polymethacrylate having a mass average molecular weight of 30,000 to 600,000 inclusive and (B) an olefin copolymer having a 95% loss temperature of 500 ° C or lower as measured by a differential thermal analysis and a shear stability index (SSI) of 40 or less to a lubricant oil base oil.
  • B an olefin copolymer having a 95% loss temperature of 500 ° C or lower as measured by a differential thermal analysis and a shear stability index (SSI) of 40 or less to a lubricant oil base oil.
  • SSI shear stability index
  • US 2.0090270294 discloses a mixture of at least two polymers having a difference of pennanent shear stability index (PSSI).
  • PSSI pennanent shear stability index
  • EP1436369 discloses a biodegradable lubricant that is at least 60% biodegradable and has a gelation index of about 12 or less can be formulated using a trans-estenfied triglyceride base oil together with a synthetic ester.
  • a com binati on of an ester viscosity index improver and an olefin copolymer viscosity index improver also can be added
  • US20170088789 discloses a lubricant composition containing a (rneth)-acrylate- containing polymer comprising a multiplicity' of arms containing at least 20 carbon atoms, said aims being attached to a multivalent organic moiety; and an ethylene/olefin copolymer having a weight average molecular weight of about 10,000 to about 250,000.
  • the present disclosure provides a lubricating engine oil composition having a HTHS viscosity at 150°C in a range of about 1.3 to about 2.9 cP, comprising: a) a major amount of an oil of lubricating vi scosity having a kinematic viscosity at 10G C 'C in a range of 1.5 to 6.0 mm 2 /s;
  • DPMA VII a dispersant poiymethaciylate (DPMA) VII having a Mw of from 200,000 g/inoi to 450,000 g/mol;
  • a non-dispersant ethylene-based olefin copolymer viscosity index improver having a Mw of from 50,000 g/mol to 150,000 g/mol and a total ethylene content of about 30 wt % to about 70 wt %.
  • lubricating oil composition is substantially free of molybdenum containing element.
  • the present disclosure provides a method for improving friction and reducing wear in an internal combustion engine comprising lubricating said engine with a lubricating oil composition having a HTHS viscosity at 150°C in a range of about 1.3 to about 2.9 cP, comprising: a) a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100°C in a range of 1.5 to 6.0 mm 2 /s;
  • DPMA VII a dispersant polymethacrylate (DPMA) VII having a Mw of from 200,000 g/moi to 450,000 g/mol;
  • a non-dispersant ethylene -based olefin copolymer viscosity index improver having a Mw of from 50,000 g/mol to 150,000 g/moi and a total ethylene content of about 30 wt % to about 70 wt %.
  • A“major amount” means in excess of 50 weight % of a composition.
  • A“minor amount” means less than 50 weight % of a composition, expressed in respect of the stated additive and in respect of the total mass of all tire additives present in the composition, reckoned as active ingredient of the additive or additives.
  • Active ingredients or“actives” refers to additive material that is not diluent or solvent.
  • ppm means parts per million by weight, based on the total weight of the lubricating oil composition.
  • High temperature high shear (HTHS) viscosity at 150°C was determined in accordance with ASTM D4683.
  • Metal - The term“metal” refers to alkali metals, alkaline earth metals, or mixtures thereof.
  • oil soluble or dispersible is used.
  • oil soluble or dispersible is meant that an amount needed to provide the desired level of activity or performance can be incorporated by being dissolved, dispersed or suspended in an oil of lubricating viscosity. Usually, this means that at least about 0.001% by weight of the material can be incorporated in a lubricating oil composition.
  • oil soluble and dispersible particularly "stably dispersible" see U.S Pat. No. 4,320,019 which is expressly incorporated herein by reference for relevant teachings in this regard.
  • sulfated ash refers to the non-combustible residue resulting from detergents and metallic additives in lubricating oil . Sulfated ash may be determined using ASTM Test D874.
  • TBN Total Base Number
  • Nitrogen content was determined in accordance with ASTM D4629.
  • Olefins refers to a class of unsaturated aliphatic hydrocarbons having one or more carbon-carbon double bonds, obtained by a number of processes. Those containing one double bond are called mono-alkenes, and those with two double bonds are called dienes, alkyldienes, or diolefins. Alpha olefins are particularly reactive because the double bond is between the first and second carbons. Examples are 1-octene and 1 -octadecene, which are used as the starting point for medium-biodegradable surfactants. Linear and branched olefins are also included in the definition of olefins.
  • Normal Alpha Olefins refers to olefins which are straight chain, non-branched hydrocarbons with carbon-carbon double bond present in the alpha or primary position of the hydrocarbon chain.
  • Isomerized Normal Alpha Olefin refers to an alpha olefin that has been subjected to isomerization conditions which results in an alteration of the distribution of the olefin species present and/or the introduction of branching along the alkyl chain.
  • Tire isomerized olefin product may be obtained by isomerizing a linear alpha olefin containing from about 10 to about 40 carbon atoms, preferably from about 20 to about 28 carbon atoms, and preferably from about 20 to about 24 carbon atoms.
  • the terms“comprises,”“comprising,”“includes,”“including,”“has,” “having,” or any other variation thereof, are intended to cover a non-exclusive inclusion.
  • a process, method, article, or apparatus that comprises a list of features is not necessarily limited only to those features but may include other features not expressly listed or other features that are inherent to such process, method, article, or apparatus.
  • “or” refers to an inclusive-or and not to an exclusive-or. For example, a condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).
  • the oil of lubricating viscosity (sometimes referred to as“base stock” or“base oil”) is the primary liquid constituent of a lubricant, into which additives and possibly other oils are blended, for example to produce a final lubricant (or lubricant composition).
  • a base oil is useful for making concentrates as well as for making lubricating oil compositions therefrom, and may be selected from natural and synthetic lubricating oils and combinations thereof.
  • Natural oils include animal and vegetable Oils, liquid petroleum oils and hydrorefined, solvent-treated mineral lubricating oils of the paraffinic, naphthenic and mixed paraffinic- naphthenic types. Oils of lubricating viscosity derived from coal or shale are also useful base oils.
  • Synthetic lubricating oils include hydrocarbon oils such as polymerized and interpolymerized olefins (e.g., polybutylenes, polypropylenes, propylene-isobutylene copolymers, chlorinated polybutylenes, poly(l -hexenes), poly(l-octenes), poly(l-decenes); alkylhenzenes (e.g., dodecylbenzenes, tetradecylbenzenes, dinonylbenzenes, di(2- ethylhexyl)benzenes; polyphenols (e.g., biphenyls, terphenyls, alkylated polyphenols); and alkylated diphenyl ethers and alkylated diphenyl sulfides and the derivatives, analogues and homologues thereof.
  • hydrocarbon oils such as polymerized and interpolymerized olefins (e.
  • Another suitable class of synthetic lubricating oils comprises the esters of dicarboxylic acids (e.g., malonic acid, alkyl malonic acids, alkenyl malomc acids, succinic acid, alkyl succinic acids and alkenyl succinic acids, maleic acid, fumaric acid, azelaic acid, suberic acid, sebacic acid, adipic acid, linoleic acid dimer, phthalic acid) with a variety of alcohols (e.g., butyl alcohol, hexyl alcohol, dodecyl alcohol, 2-ethylhexyl alcohol, ethylene glycol, diethylene glycol monoether, propylene glycol).
  • dicarboxylic acids e.g., malonic acid, alkyl malonic acids, alkenyl malomc acids, succinic acid, alkyl succinic acids and alkenyl succinic acids, maleic acid, fumaric acid, azelaic acid, suberic
  • esters include dibutyl adipate, di(2-ethylhexyl) sebacate, di-w-hexyl fumarate, dioctyl sebacate, diisooctyl azelate, diisodecyl azelate, dioctyl phthalate, didecyl phthaJate, dieicosyl sebacate, the 2-ethylhexyl diester of linoleic acid dimer, and the complex ester formed by reacting one mole of sebactc acid with two moles of tetraethyiene glycol and two moles of 2-ethylhexanoic acid.
  • Esters useful as synthetic oils also include those made from Cs to Cu monocarboxylic acids and polyols, and polyol ethers such as neopentyl glycol, trirnethylolpropane, pentaerythntol, dipentaerythritol and tripentaerythritol.
  • the ester base oil is present at from about 1 to 10 wt. % based on the total weight of the lubricating oil composition. In other embodiments, the ester base oil is present at from about 1 to 8 wt. %, from about 1 to 6 wt. %, from about 1 to 5 wt. %, from about 1 to 4 wt. %, from about 1 to 3 wt. %, from about 1 to 2 wt. %, based on the total weight of the lubricating oil composition
  • the base oil may be derived from Fischer-Tropsch synthesized hydrocarbons.
  • Fischer- Tropsch synthesized hydrocarbons are made from synthesis gas containing 3 ⁇ 4 and CO using a Fischer-Tropsch catalyst.
  • Such hydrocarbons typically require further processing in order to be useful as the base oil.
  • the hydrocarbons may be hydroisomerized; hydrocracked and hydroisomerized; dewaxed; or hydroisomerized and dewaxed; using processes known to those skilled the art.
  • Unrefined, refined and re-refined oils can be used in the present lubricating oil composition.
  • Unrefined oils are those obtained directly from a natural or synthetic source without further purification treatment. For example a shale oil obtained directly from retorting operations, a petroleum oil obtained directly from distillation or ester oil obtained directly from an esterification process and used without further treatment would be unrefined oil.
  • Refined oils are similar to the unrefined oils except they have been further treated in one or more purification steps to improve one or more properties. Many such purification techniques, such as distillation, solvent extraction, acid or base extraction, filtration and percolation are known to those skilled in the art.
  • Re-refined oils are obtained by processes similar to those used to obtain refined oils applied to refined oils which have been already used in sendee. Such re- refined oils are also known as reclaimed or reprocessed oils and often are additionally processed by techniques for approval of spent additive and oil breakdown products.
  • the base oil which may be used to make the present lubricating oil composition may be selected from any of the base oils in Groups I-V as specified in the American Petroleum Institute (API) Base Oil Interchangeability Guidelines (API Publication 1509).
  • API American Petroleum Institute
  • Base Oil Interchangeability Guidelines API Publication 1509
  • Base oils suitable for use herein are any of the variety corresponding to API Group II, Group III, Group IV, and Group V oils and combinations thereof, preferably the Group III to Group V oils due to their exceptional volatility, stability, viscometric and cleanliness features.
  • the base oil constitutes the major component of the present lubricating oil composition and is present is an amount ranging from greater than 50 to 99 wt. % (e.g., 70 to 95 wt. %, or 85 to 95 wt. %).
  • the base oil may be selected from any of the synthetic or natural oils typically used as crankcase lubricating oils for spark -ignited internal combustion engines.
  • the base Oil typically has a kinematic viscosity at 100°C in a range of 1.5 to 6 mm Vs. In the case where the kinematic viscosity at 100°C of the lubricating base oil exceeds 6 mm 2 /s, low temperature viscosity properties may be reduced, and sufficient fuel efficiency may not be obtained.
  • the base oil has a viscosity index of at least 90 (e.g., at least 95, at least 105, at least 1 10, at least 115, or at least 120). If the viscosity index is less than 90, not only viscosity- temperature properties, heat and oxidation stability, and anti-volatilization are reduced, but also the coefficient of friction tends to be increased; and resistance against wear tends to be reduced.
  • the lubricating oil composition is a multi-grade oil.
  • the multi-grade oil is a viscosity grade SAE 0W-XX oil, wherein XX is any one of 8, 10, 12, 16, and 20.
  • the lubricating oil composition has a high temperature shear (HTHS) viscosity at 150°C of 2.9 cP or less (e.g., 1.0 to 2.9 eP, or 1.3 to 2.9 cP) of 2 6 cP or less (e.g., 1.0 to 2.6 cP, or 1 3 to 2.6 cP) of 2.3 cP or less (e.g., 1.0 to 2.3 cP, or 1.3 to 2.3 cP), such as 2.0 cP or less (e.g., 1.0 to 2.0 cP, or 1.3 to 2.3 cP), or even 1.7 cP or less (e.g., 1.0 to 1.7 cP, or 1.3 to 1.7 cP).
  • HTHS high temperature shear
  • the lubricating oil composition has a viscosity index of at least 135 (e.g., 135 to 400, or 135 to 250), at least 150 (e.g., 150 to 400, 150 to 250), at least 165 (e.g., 165 to 400, or 165 to 250), at least 190 (e.g., 190 to 400, or 190 to 250), or at least 200 (e.g., 200 to 400, or 200 to 250). If the viscosity index of the lubricating oil composition is less than 135, it may be difficult to improve fuel efficiency while maintaining the HTHS viscosity at 150°C.
  • the lubricating oil composition has a kinematic viscosity at iOG°C in a range of 3 to 12 mm 2 /s (e.g., 3 to 8.2 mm 2 /s, 3.5 to 8.2 mm 2 /s, or 4 to 8.2 mm 2 /s).
  • the level of sulfur in the lubricating oil compositions of the present invention is less than or equal to about 0.7 wt. %, based on the total weight of the lubricating oil composition, e.g., a level of sulfur of about 0.01 wt. % to about 0.70 wt. %, 0.01 to 0.6 wt.%, 0.01 to 0.5 wt.%, 0.01 to 0.4 wt.%, 0.01 to 0.3 wt.%, 0.01 to 0.2 wt.%, 0.01 wt. % to 0.10 wt. %. In one embodiment, the level of sulfur in the lubricating oil compositions of the present invention is less than or equal to about 0.60 wt.
  • % less than or equal to about 0.50 wt. %, less than or equal to about 0.40 wt. %, less than or equal to about 0.30 wt. %, less than or equal to about 0.20 wt. %, less than or equal to about 0.10 wt. % based on the total weight of the lubricating oh composition.
  • tire levels of phosphorus in the lubricating oil compositions of the present invention is less than or equal to about 0.12 wt. %, based on the total weight of the lubricating oil composition, eg., a level of phosphorus of about 0.01 wt. % to about 0.12 wt. %. In one embodiment, the levels of phosphorus in the lubricating oil compositions of the present invention is less than or equal to about 0.11 wt. %, based on the total weight of the lubricating oil composition, e.g., a level of phosphorus of about 0.01 wt. % to about 0.11 wt. %.
  • the levels of phosphorus in the lubricating oil compositions of the present invention is less than or equal to about 0.10 wt. %, based on the total weight of tire lubricating oil composition, e ., a level of phosphorus of about 0.01 wt. % to about 0.10 wt. %. In one embodiment, the levels of phosphorus in the lubricating oil compositions of the present invention is less than or equal to about 0.09 wt %, based on the total weight of the lubricating oil composition, e.g., a level of phosphorus of about 0.01 wt. % to about 0.09 wt. %.
  • the le vels of phosphorus in the lubricating oil compositions of the present invention is less than or equal to about 0.08 wt. %, based on the total weight of the lubricating oil composition, e.g., a level of phosphorus of about 0.01 wt. % to about 0.08 wt. %. In one embodiment, the levels of phosphorus in the lubricating oil compositions of the present invention is less than or equal to about 0.07 wt. %, based on the total weight of the lubricating oil composition, e.g , a level of phosphorus of about 0.01 wt. % to about 0.07 wt. %.
  • the levels of phosphorus in the lubricating oil compositions of the present invention is less than or equal to about 0.05 wt. %, based on the total weight of the lubricating oil composition, e.g., a level of phosphorus of about 0.01 wt. % to about 0.05 wt.
  • the level of sulfated ash produced by the lubricating oil compositions of the present invention is less than or equal to about 1.60 wt. % as determined by ASTM D 874, e.g., a level of sulfated ash of from about 0.10 to about 1.60 wt. % as determined by ASTM D 874.
  • the level of sulfated ash produced by the lubricating oil compositions of the present invention is less than or equal to about 1.00 wt. % as determined by ASTM D 874, e.g., a level of sulfated ash of from about 0.10 to about 1.00 wt. % as determined by ASTM D 874. In one embodiment, the level of sulfated ash produced by the lubricating oil compositions of the present invention is less than or equal to about 0.80 wt. % as determined by ASTM D 874, e.g., a level of sulfated ash of from about 0.10 to about 0.80 wt. % as determined by ASTM D 874.
  • the level of sulfated ash produced by the lubricating oil compositions of the present invention is less than or equal to about 0.60 wt. % as determined by ASTM D 874, e.g., a level of sulfated ash of from about 0.10 to about 0.60 wt. % as determined by ASTM D 874.
  • the present lubricating oil composition may have a total base number (TBN) of 4 to 15 mg KOH/g (e.g., 5 to 12 mg KOH/g. 6 to 12 mg KOH/g, or 8 to 12 mg KOH/g).
  • TBN total base number
  • Viscosity modifiers or viscosity index improvers (VIIs) may be used in the lubricant to impart high and low temperature operability.
  • VM may be used to impart that sole function or may be multifunctional .
  • Multifunctional viscosity modifiers also provide additional functionality for dispersant function.
  • Viscosity modifiers and dispersant viscosity modifiers are polymethacrylates, polyacrylates, polyolefins, styrene-maleic ester copolymer and similar polymeric substances including homopolymers, copolymers and graft copolymers.
  • the VIIs can be present in the lubricating oil composition from 0.001 to 10 wt.% based on the lubricating oil composition. In other embodiments, the VIIs can be present from 0.01 to 8 wt.%, from 0.01 to 5 wt.%, from 0.01 to 4 wt.%, from 0.01 to 3 wt.%, from 0.01 to 2 5 wt.%, from 0.1 to 2.5 wt.% the lubricating oil composition.
  • Dispersant Polymethacrylate VII DPMA
  • DPMA Dispersant Polymethacrylate
  • the dispersant PMA has a weight average molecular weight of from 200,000 g/mol to 450,000 g/mol, from 200,000 g/mol to 400,000 g/mol, from 200,000 g/mol to 350,000 g/mol, or from 200,000 g/mol to 300,000 g/mol .
  • the dispersant polymethacrylate (DPMA) viscosity index modifier used in the present invention can be described as follows, and as set forth in WO 2013/182581, the disclosure of which is incorporated herein. Compounds within this definition would include Viscoplex® viscosity index improvers 6-054, 6-565, 6-850, 6-950 and 6-954, all available from Evo k RohMax Additives GmbH of Darmstadt, Germany
  • the polyalkyl(meth)acrylate(s) comprise monomer units of:
  • R is hydrogen or methyl
  • R 1 is a saturated or unsaturated linear or branched alkyl radical having 1 to 5 carbon atoms or a saturated or unsaturated cycloalkyl group having 3 to 5 carbon atoms
  • R and R 3 are each independently hydrogen or a group of the formula - CQOR’ wherein R' is hydrogen or a saturated or unsaturated linear or branched alkyl group having 1 to 5 carbon atoms;
  • R is hydrogen or methyl
  • R 4 is a saturated or unsaturated linear or branched alkyl radical having 6 to 15 carbon atoms or a saturated or unsaturated cycloalkyl group having 6 to 15 carbon atoms
  • R s and R 6 are each independently hydrogen or a group of the formula - CQQR" in which R" is hydrogen or a saturated or unsaturated linear or branched alkyl group having 6 to 15 carbon atoms;
  • R is hydrogen or methyl
  • R 7 is a saturated or unsaturated linear or branched alky] radical having 16 to 40 preferably 16 to 30, carbon atoms or a cycloalkyl group having 16 to 40, preferably 16 to 30, carbon atoms
  • R s and R 9 are each independently hydrogen or a group of the formula -COOR" in which R !!! is hydrogen or a saturated or unsaturated linear or branched alkyl group having 16 to 40, preferably 16 to 30, carbon atoms;
  • the DPMA used in the present invention is believed to contain about 1 to 10 wt % methyl methacrylate monomer, about 0.5 to 3 wt. % N-vinyl pyrolidone as the nitrogen- containing monomer, and the balance longer chain alkyl methacrylate monomers, in particular, lauryl methacrylate, and has a MW of from 200,000 to 250,000. It has an SSI of from about 40 to about 50.
  • the non-dispersant ethylene-based olefin copolymer VII has a weight average molecular weight of from 50,000 g/mol to about 150,000 g/rnol, from about 60,000 g/mol to about 120,000 g/mol, or from about 70,000 g/mol to about 110,000 g/mol.
  • ethylene-based viscosity index modifier used in the present invention can be described as follows, and as set forth in US20130203640, the disclosure of which is incorporated herein.
  • the ethylene-based VII is an ethylene propylene copolymer.
  • the polymer compositions typically contain about 30 wt % to about 70 wt % of the first ethylene-a-olefin copolymer (a) and about 70 wt % to about 30 wt % of the second ethylene-a-olefin copolymer (b) based upon the total amount of (a) and (b) in the composition.
  • the polymer compositions typically contain about 40 wt % to about 60 wt % of the first ethylene-a-olefin copolymer (a) and about 60 wt % to about 40 wt % of the second ethylene-a-olefin copolymer (b) based upon the total amount of (a) and (b) in the composition.
  • the polymer composition contains about 50 to about 54 wt % of the first ethylene-a-olefin copolymer (a) and about 46 to about 50 wt % of the second ethyiene-a-olefm copolymer (h) based upon the total amount of (a) and (h) in the composition.
  • the weight average molecular weight of the first ethylene-a-olefin copolymer in one embodiment is typically about 60,000 g/mol to about 120,000 g/mol. In another embodiment, the weight average molecular weight of the first ethylene-a-olefin copolymer is typically about 70,000 g/mol to about 110,000 g/mol.
  • the weight average molecular weight of the second ethylene-a-olefin copolymer in one embodiment is typically about 60,000 g/mol to about 120,000 g/mol. In another embodiment, the weight average molecular weight of the second ethylene-a-olefin copolymer is typically about 70,000 g/mol to about 1 10,000 g/mol.
  • the weight average m olecular weight of the composition of the fi rst ethylene-a-olefin copolymer and second ethylene-a-olefin copolymer in one embodiment is typically about 60,000 g/mol to about 120,000 g/mol.
  • the weight average molecular weight of tire composition of the first ethyiene-a-olefm copolymer and second ethylene-a-olefin copolymer is typically about 70,000 g/mol to about 110,000 g/mol.
  • the weight average molecular weight of the composition of the first ethylene-a-olefin copolymer and second ethylene-a-olefin copolymer is typically about 80,000 to about 100,000 g/mol.
  • the molecular weight distribution of each of the ethylene-a-olefin copolymers is typically less than about 2.5, and more typically about 2.1 to about 2.4.
  • the polymer distribution as determined by GPC is typically unimodal.
  • the polymer compositions typically have a total ethylene content of about 40 wt. % to about 70 wt. %, or about 50 wt. % to about 70 wt. %. In another embodiment, the polymer compositions typically have a total ethylene content of about 55 wt. % to about 65 wt. %. In other embodiments, the polymer composition has a total ethylene content of about 57 wt. % to about 63 wt. %.
  • Salicylates may be prepared by reacting a basic metal compound with at least one carboxylic acid and removing water from the reaction product.
  • Detergents made from salicylic acid are one class of detergents prepared from carboxylic acids.
  • Useful salicylates include long chain alkyl salicylates.
  • One useful family of compositions is of the following structure (5): wherein R” is a Ci to C30 (e.g., C13 to C30) alkyl group; n is an integer from 1 to 4; and M is an alkaline earth metal (e.g., Ca or Mg).
  • Hydrocarbyl-substituted salicylic acids may be prepared from phenols by the Kolbe reaction (see U.S. Patent No. 3,595,791 ).
  • the metal salts of the hydrocarbyl-substituted salicylic acids rnay be prepared by double decomposition of a metal salt in a polar solvent such as water or alcohol.
  • the salicylate is derived from Cio-Cro isomerized NAO and is made from an alkylphenol with an alkyl group derived from an isomerized NAO having an isomerization level (i) from about 0.10 to about 0.40, preferably from about 0.10 to about 0.35, preferably from about 0.10 to about 0.30, and more preferably from about 0.12 to about 0.30.
  • a typical detergent is an anionic material that contains a long chain hydrophobic portion of the molecule and a smaller anionic or oleophobic hydrophilic portion of the molecule.
  • the anionic portion of the detergent is typically derived from an organic acid such as a sulfur acid, carboxylic acid, phosphorous acid, phenol, or mixtures thereof.
  • the counterion is typically an alkaline earth or alkali metal.
  • Salts that contain a substantially stoichiometric amount of the metal are described as neutral salts and have a total base number (TBN) of from 0 to 80 mg KOH/g.
  • TBN total base number
  • Many compositions are overbased, containing large amounts of a metal base that is achieved by- reacting an excess of a metal compound (e.g., a metal hydroxide or oxide) rich an acidic gas (e.g., carbon dioxide).
  • a metal compound e.g., a metal hydroxide or oxide
  • an acidic gas e.g., carbon dioxide
  • Useful detergents can be neutral, mildly overbased, or highly overbased.
  • the overbased material has a ratio of metallic ion to anionic portion of the detergent of 1.05: 1 to 50: 1 (e.g , 4: 1 to 25: 1 ) on an equivalent basis.
  • the resulting detergent is an overbased detergent that will typically have a TBN of 150 mg KQH/g or higher (e.g., 250 to 450 mg KQH/g or more).
  • a mixture of detergents of differing TBN can be used.
  • Suitable detergents include metal salts of sulfonates, phenates, carboxylates, phosphates, and salicylates.
  • Sulfonates may he prepared from sulfonic acids which are typically obtained by the sulfonation of alkyl-substituted aromatic hydrocarbons such as those obtained from the fractionation of petroleum or by the alkylation of aromatic hydrocarbons. Examples included those obtained by alkylating benzene, toluene, xylene, naphthalene, diphenyl or their halogen derivatives.
  • the alkylation may be carried out in the presence of a catalyst with alkylating agents having from about 3 to more than 70 carbon atoms.
  • the alkaryl sulfonates usually contain from about 9 to 80 or more carbon atoms (e.g., about 16 to 60 carbon atoms) per alkyl substituted aromatic moiety.
  • Phenates can be prepared by reacting an alkaline earth metal hydroxide or oxide (e.g., CaO, Ca(OH) 2 , MgO, or Mg(QH) 2 ) with an alkyl phenol or sulfurized alkylphenol.
  • alkaline earth metal hydroxide or oxide e.g., CaO, Ca(OH) 2 , MgO, or Mg(QH) 2
  • Useful alkyl groups include straight or branched chain Ci to C30 (e.g., C 4 to C20) alkyl groups, or mixtures thereof.
  • suitable phenols include isobutylphenol, 2-ethylhexylphenol, nonylphenol, dodecyl phenol, and the like. It should be noted that starting alkylphenols may contain more than one alkyl substituent that are each independently straight chain or branched chain.
  • the sulfurized product may be obtained by methods well known in the art. These methods include heating a mixture of alkylphenol and sulfurizing agent (e.g., elemental sulfur, sulfur halides such as sulfur dichloride, and the like) and then reacting the sulfurized phenol with an alkaline earth metal base.
  • sulfurizing agent e.g., elemental sulfur, sulfur halides such as sulfur dichloride, and the like
  • Preferred magnesium -containing detergents include magnesium sulfonates, magnesium phenat.es, and magnesium salicylates, especially magnesium sulfonates and salicylates. These can be as described above.
  • the magnesium-containing detergent may be used in an amount that provides at least 200 ppm to 1000 ppm, 240 ppm to 1000 ppm, 240 to 900 ppm, 240 to 840 ppm, 240 to 800 ppm, 250 to 800 ppm, 300 to 1000 ppm, 300 to 800 ppm, 400 to 1000 ppm, or 400 to 800 ppm) by weight of magnesium to the lubricating oil composition.
  • the levels of molybdenum containing element in the lubricating oil compositions of the present invention is less than or equal to about 60 ppm, based on the total weight of the lubricating oil composition, e.g., a level of molybdenum containing element of about 0.01 to about 60 ppm. In one embodiment, the levels of molybdenum containing element in the lubricating oil compositions of the present invention is less than or equal to about 40 ppm, based on the total weight of the lubricating oil composition, e.g., a level of molybdenum containing element of about 0.01 to about 40 ppm.
  • the levels of molybdenum containing element in the lubricating oil compositions of the present invention is less than or equal to about 25 ppm, based on the total weight of the lubricating oil composition, e.g, a level of molybdenum containing element of about 0.01 to about 25 ppm. In one embodiment, the levels of molybdenum containing element in the lubricating oil compositions of the present invention is less than or equal to about 15 ppm, based on the total weight of the lubricating oil composition, e.g, a level of molybdenum containing element of about 0.01 to about 15 ppm.
  • the levels of molybdenum containing element in the lubricating oil compositions of the present invention is less than or equal to about 10 ppm, based on the total weight of the lubricating oil composition, e.g, a level of molybdenum containing element of about 0.01 to about 10 ppm. In one embodiment, the levels of molybdenum containing element in the lubri cating oil compositions of the present invention is less than or equal to about 5 ppm, based on the total weight of the lubricating oil composition, e.g, a level of molybdenum containing element of about 0.01 to about 5 ppm.
  • the lubricating oil composition is substantially free of molybdenum containing element.
  • substantially free of molybdenum containing element means the molybdenum containing element is present at less than 10, less than 9, less than 8, less than 7, less than 6, less than 5, less than 4, less than 3, less than 2, less than 1, less than 0.5, less than 0.1 ppm .
  • the lubricating oil composition can comprise additional lubricating oil additives.
  • the lubricating oil compositions of the present disclosure may also contain oilier conventional additives that can impart or improve any desirable property of the lubricating oil composition in which these additives are dispersed or dissolved.
  • Any additive known to a person of ordinary skill in the art may be used in the lubricating oil compositions disclosed herein.
  • Some suitable additives have been described in Mortier et al.,“Chemistry and Technology of Lubricants”, 2nd Edition, London, Springer, (1996); and Leslie R. Rudnick, “Lubricant Additives: Chemists ⁇ ' and Applications”, New York, Marcel Dekker (2003), both of which are incorporated herein by reference.
  • the lubricating oil compositions can be blended with antioxidants, anti-wear agents, metal detergents, rust inhibitors, dehazing agents, demulsifymg agents, metal deactivating agents, friction modifiers, pour point depressants, antifoaming agents, co-solvents, corrosion-inhibitors, ashless dispersants, multifunctional agents, dyes, extreme pressure agents and the like and mixtures thereof.
  • antioxidants anti-wear agents, metal detergents, rust inhibitors, dehazing agents, demulsifymg agents, metal deactivating agents, friction modifiers, pour point depressants, antifoaming agents, co-solvents, corrosion-inhibitors, ashless dispersants, multifunctional agents, dyes, extreme pressure agents and the like and mixtures thereof.
  • additives are known and commercially available. These additives, or their analogous compounds, can be employed for the preparation of the lubricating oil compositions of the disclosure by the usual blending procedures.
  • the lubri cating oil composition of the present invention can contain one or more anti wear agents that can reduce friction and excessive wear.
  • Any anti-wear agent known by a person of ordinary skill in the art may be used in the lubricating oil composition.
  • suitable anti-wear agents include zinc dithiophosphate, metal (e.g., Pb, Sb, Mo and the like) salts of dithiophosphat.es, metal (e.g., Zn, Pb, Sb, Mo and the like) salts of dithiocarbamates, metal (e.g., Zn, Pb, Sb and the like) salts of fatty acids, boron compounds, phosphate esters, phosphite esters, amine salts of phosphoric acid esters or thiophosphoric acid esters, reaction products of dicyclopentadiene and thiophosphoric acids and combinations thereof
  • Tire amount of the anti-wear agent may vary from about 0.01 wt.
  • % to about 5 wt. % from about 0.05 wt. % to about 3 wt. %, or from about 0.1 wt. % to about 1 wt. %, based on the total weight of the lubricating oil composition.
  • the anti-wear agent is or comprises a dihydrocarbyl dithiophosphate metal salt, such as zinc dialkyl dithiophosphate compounds.
  • Tire metal of the dihydrocarbyl dithiophosphate metal salt may be an alkali or alkaline earth metal, or aluminum, lead, tin, molybdenum, manganese, nickel or copper.
  • the metal is zinc.
  • the alkyl group of the dihydrocarbyl dithiophosphate metal salt has from about 3 to about 22 carbon atoms, from about 3 to about 18 carbon atoms, from about 3 to about 12 carbon atoms, or from about 3 to about 8 carbon atoms.
  • the alkyl group is linear or branched.
  • the amount of the dihydrocarbyl dithiophosphate me tal salt including the zinc dialkyl dithiophosphate salts in the lubricating oil composition disclosed herein is measured by its phosphorus content.
  • the phosphorus content of the lubricating oil composition disclosed herein is from about 0.01 wt. % to about 0.14 wt. %, based on the total weight of the lubricating oil composition.
  • the lubricating oil composition of the present invention can contain one or more friction modifiers that can lower the friction between moving parts.
  • Any friction modifier known by a person of ordinary skill in the art may be used in the lubricating oil composition.
  • suitable friction modifiers include fatty carboxylic acids; derivatives (e.g., alcohol, esters, borated esters, amides, metal salts and the like) of fatty carboxylic acid; mono-, di- or tri-alkyl substituted phosphoric acids or phosphonic acids; derivatives (e.g., esters, amides, metal salts and the like) of mono-, di- or tri-alkyl substituted phosphoric acids or phosphonic acids; mono-, di- or tri-alkyl substituted amines; mono- or di-alkyl substituted amides and combinations thereof.
  • examples of friction modifiers include, but are not limited to, a!koxylated fatty amines; borated fatty epoxides; fatty phosphites, fatty epoxides, fatty amines, borated alkoxylated fatty amines, metal salts of fatty acids, fatty acid amides, glycerol esters, borated glycerol esters; and fatly imidazolines as disclosed in U.S.
  • Patent No 6,372,696 the contents of which are incorporated by reference herein; friction modifiers obtained from a reaction product of a C4 to C75, or a Cc, to C24, or a Ce to C20 , fatty acid ester and a nitrogen -containing compound selected from the group consisting of ammonia, and an aikanolamine and the like and m ixtures thereof.
  • the amount of the friction modifier may vary from about 0.01 wt. % to about 10 wt. %, from about 0 05 wt. % to about 5 wt. %, or from about 0.1 wt. % to about 3 wt. %, based on the total weight of the lubricating oil composition.
  • the lubricating oil composition of the invention preferably contains an organic oxidation inhibitor in an amount of 0.01-5 wt. %, preferably 0.1-3 wt. %.
  • the oxidation inhibitor can be a hindered phenol oxidation inhibitor or a diarylamine oxidation inhibitor.
  • the diaryl amine oxidation inhibitor is advantageous in giving a base number originating from the nitrogen atoms.
  • the hindered phenol oxidation inhibitor is advantageous in producing no NOx gas.
  • hindered phenol oxidation inhibitors examples include 2,6-di-t-butyl-p- cresoi, 4,4' -methylenebis(2,6-di-t-butylphenol), 4,4 / -methylenebis(6-t-butyl-o-cresol), 4,4 / -isopropylidenebis(2,6-di-t-butylphenol), 4,4 / -bis(2,6-di-t-butylphenol), 2,2 / methylenebis(4-methyl-6-t-butylphenol), 4,4 / -thiobis(2-methyl-6-t-butylphenoI), 2,2-thio- diethyienebis[3 ⁇ (3,5 ⁇ di-t ⁇ butyl-4-hydroxypheny!propioiiate], octyl 3-(3,5-di-t-butyl-4- hydroxyphenyi)propionate, octadecyl 3-(3,5-di
  • diarylamine oxidation inhibitors examples include alkyldiphenylamine having a mixture of alkyl groups of 4 to 9 carbon atoms, r,r' -dioctyldiphenylamine, phenyl- naphthylamine, phenyl-naphthylamine, alkylated-naphthylamine, and alkylated phenyl- naphthylamine.
  • each of the hindered phenol oxidation inhibitor and diarylamine oxidation inhibitor can be employed alone or in combination. If desired, other oil soluble oxidation
  • additives in the form of 10 to 80 wt. % active ingredient concentrates in hydrocarbon oil, e.g. mineral lubricating oil, or other suitable solvent.
  • concentrates may be diluted with 3 to 100, e.g., 5 to 40, parts by weight of lubricating oil per part by weight of the additive package in forming finished lubricants, e.g. crankcase motor oils.
  • the purpose of concentrates is to make the handling of the various materials less difficult and awkward as well as to facilitate solution or dispersion in the final blend.
  • the lubricating oil compositions disclosed herein can be prepared by any method known to a person of ordinary skill in the art for making lubricating oils.
  • the base oil can be blended or mixed with the zirconium-containing compounds described herein.
  • one or more other can be added.
  • the additives may be added to the base oil individually or simultaneously.
  • the additives are added to the base oil individually in one or more additions and the additions may be in any order.
  • the additives are added to the base oil simultaneously, optionally in the form of an additive concentrate.
  • the solubilizing of the additives in the base oil may be assisted by heating the mixture to a temperature from about 25 °C to about 200 °C, from about 50 °C to about 150 °C or from about 75 °C to about 125 °C. Any mixing or dispersing equipment known to a person of ordinary ' skill in the art may be used for blending, mixing or solubilizing the ingredients.
  • the blending, mixing or solubilizing may be earned out with a blender, an agitator, a disperser, a mixer (e.g., planetary mixers and double planetary ' mixers), a homogenizer (e.g., Gaulin homogenizers and Rannie homogenizers), a mill (e.g., colloid mill, ball mill and sand mill) or any other mixing or dispersing equipment known in the art.
  • a blender e.g., planetary mixers and double planetary ' mixers
  • a homogenizer e.g., Gaulin homogenizers and Rannie homogenizers
  • a mill e.g., colloid mill, ball mill and sand mill or any other mixing or dispersing equipment known in the art.
  • the lubricating oil composition disclosed herein may be suitable for use as motor oils (that is, engine oils or crankcase oils), in a spark-ignited internal combustion engine, particularly direct injected and boosted engines.
  • a lubricating oil composition was prepared by blending together the following components to obtain an SAE 0W-20 viscosity grade formulation free of molybdenum:
  • a combination of viscosity index improvers which was 0.70 wt.% of a polymer concentrate which contains an ethylene propylene derived non dispersant OCP (ethylene propylene based copolymer with between 55 to 65% ethylene, a weight average molecular weight of 80,000 to about 100,000 g/niol, and an SSI of about 20 to about 26) and 1.50 wt.% of polymer concentrate which contains a dispersant type PMA (1 to 10 wt.% methyl methacrylate monomer, about 0.5 to 3 wt.
  • OCP ethylene propylene derived non dispersant
  • PMA dispersant type
  • N-vinyl pyrolidone as the nitrogen-containing monomer, and the balance longer chain alkyl methacrylate monomers, in particular, lauryl methacrylate, and has a MW of from 200,000 to 250,000. It has an SSI of from about 40 to about 5Qschreib
  • additional additives including an organic friction modifier, a Mannich reaction product, corrosion inhibitor, marker, oam inhibitor;
  • Example 1 was replicated except the calcium salicylate was derived from a C 20 -C 24 isomerized normal alpha olefin with an isomerization level of the alpha olefin is about 0.16.
  • Eire additi ve contained 6.4 wt. % Ca, and about 20 wt. % diluent oil, and had a TBN of about 180 mg KOH/g and a basicity index of about 2.4. On an actives basis, the TBN of this additive is about 225 mg KOH/g.
  • the isomerization level was measured by an NMR method.
  • the NMR spectra were obtained on a Broker Ultrashield Plus 400 in chloroform-dl at 400 MHz using TopSpin 3.2 spectral processing software.
  • the isomerization level (I) represents the relative amount of methyl groups ( ⁇ ( ! ! ⁇ (chemical shift 0.30-1.01 ppm) attached to the methylene backbone groups (-CH2-) (chemical shift 1.01-1.38 ppm) and is defined by Formula (6) as shown below,
  • Example 1 was replicated except the magnesium sulfonate detergent was present in an amount to provide 840 ppm of magnesium.
  • Example 3 was replicated except the CM-C IS normal alpha olefin derived overbased calcium salicylate was removed.
  • Example 1 was replicated except that 3 wt.% of an ester base oil was added to the finished oil.
  • Example 1 was replicated except the calcium salicylate was substituted with a magnesium salicylate which was derived from a C20-C24 isomerized normal alpha olefin with an isomerization level of the alpha olefin is about 0.16.
  • the additive contained 4.3 wt. % Mg, and about 35 wt. % diluent oil, and had a TBN of about 200 mg KGH/g Isomerization level was measured as in Example 1.
  • Example 1 was replicated except the calcium salicylate was substituted with a magnesium salicylate which was derived from a CM-C JS alpha olefin and had a TBN of about 236 mgKOH/g and 5.34 wt.% Mg.
  • Example 1 was replicated except that the ethylene propylene derived non-dispersant QCP was replaced with 0.7 wt.% of polymer concentrate wtiich contains a hydrogenated polyisoprene star polymer coupled with divinylbenzene with an SSI of 4 and a molecular weight of 35,000.
  • Example 1 was replicated except that 0.4 wt.% of a sulfur free molybdenum compound was added in an amount to provide 320 ppm of molybdenum to the lubricating oil composition.
  • Example I w3 ⁇ 4s replicated except that 0.4 wt.% of a sulfur free molybdenum compound and 0.4 wt.% of a sulfur containing molybdenum suecinimide complex was added in an amount to provide 490 ppm of molybdenum to the lubricating oil.
  • Example 1 was replicated except that 1.0 wt.% of a sulfur free molybdenum compound was added in an amount to prov ide 780 ppm of molybdenum to the lubricating oil.
  • Example 1 was replicated except the ethylene propylene derived non-dispersant OCP and dispersant PMA was replaced with 4.50 wt.% of polymer concentrate winch contains a hydrogenated polyisoprene star polymer coupled with divmylbenzeme with an SSI of 4 and a molecular weight of 35,000 and 0.4 wt.% of a sulfur containing molybdenum succmimide complex was added in an amount to provide 200 ppm of molybdenum to the lubricating oil composition.
  • Comparative Example 3 was replicated except the ethylene propylene derived non dispersant OCP and dispersant PMA was replaced with 4.50 wt.% of polymer concentrate which contains a hydrogenated polyisoprene star polymer coupled with divinylbenzene with an SSI of 4 and a molecular weight of 35,000.
  • Example 1 was replicated except that the ethylene propylene derived non-dispersant OCP was replaced with a 6.25 wt.% of a polymer concentrate of a dispersant OCP.
  • Performance evaluation of the formulations is given in Table 2.
  • the following bench test was performed to measure wear: FZG Wear Scuffing Load Carrying Capacity Test.
  • FZG Wear Scuffing Load Carrying Capacity Test In order to evaluate wear performance of the automotive engine oils, the load carrying characteristics of various engine oils having different chemistries were evaluated on an FZG test rig (FZG four-square test machine) using A 10 gears according to CEC-L-84-A-02. This method is useful for evaluating the scuffing load capacity potential of oils typically used with highly stressed cylindrical gearing found in many vehicle and stationary applications.
  • The- minimum load stage fail was 8 for the A10 gears at 16.6 m/s and 130 °C.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne une huile lubrifiante comprenant : (a) une quantité majeure d'une huile de viscosité lubrifiante, (b) un polyméthacrylate dispersant (DPMA) VII, (c) un améliorant d'indice de viscosité d'un copolymère oléfinique non dispersant à base d'éthylène, (d) un détergent contenant du magnésium; la composition d'huile lubrifiante étant sensiblement exempte d'élément contenant du molybdène. L'invention concerne également un procédé pour améliorer le frottement et réduire l'usure dans un moteur à combustion interne à l'aide de ladite composition d'huile lubrifiante pour moteur.
PCT/IB2019/051610 2018-03-02 2019-02-28 Composition d'huile lubrifiante assurant une protection contre l'usure à faible viscosité WO2019166979A1 (fr)

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EP19713854.8A EP3759201A1 (fr) 2018-03-02 2019-02-28 Composition d'huile lubrifiante assurant une protection contre l'usure à faible viscosité
CN201980016656.3A CN112135893A (zh) 2018-03-02 2019-02-28 在低粘度下提供磨损保护的润滑油组合物
JP2020545721A JP2021515081A (ja) 2018-03-02 2019-02-28 低粘度で摩耗防止を提供する潤滑油組成物
SG11202008101XA SG11202008101XA (en) 2018-03-02 2019-02-28 Lubricating oil composition providing wear protection at low viscosity
CA3092280A CA3092280A1 (fr) 2018-03-02 2019-02-28 Composition d'huile lubrifiante assurant une protection contre l'usure a faible viscosite
JP2023203625A JP2024015129A (ja) 2018-03-02 2023-12-01 低粘度で摩耗防止を提供する潤滑油組成物

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EP3950905B1 (fr) * 2019-03-29 2024-01-17 Idemitsu Kosan Co.,Ltd. Composition d'huile de graissage
CA3189295A1 (fr) * 2020-07-21 2022-01-27 Chevron Japan Ltd. Composition d'huile lubrifiante contenant du magnesium et du bore pour vehicules hybrides

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SG11202008101XA (en) 2020-09-29
JP2024015129A (ja) 2024-02-01
US20190270946A1 (en) 2019-09-05

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