US20170088789A1 - Lubricants containing blends of polymers - Google Patents

Lubricants containing blends of polymers Download PDF

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Publication number
US20170088789A1
US20170088789A1 US15/126,739 US201515126739A US2017088789A1 US 20170088789 A1 US20170088789 A1 US 20170088789A1 US 201515126739 A US201515126739 A US 201515126739A US 2017088789 A1 US2017088789 A1 US 2017088789A1
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Prior art keywords
arms
lubricant composition
weight
meth
acrylate
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US15/126,739
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Inventor
Bryan A. Grisso
Daniel C. Visger
David Price
Barton J. Schober
William J. Dimitrakis
David Cressey
Kondunthirapully S. Padmanabhan
Daniel J. Knapton
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Lubrizol Corp
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Lubrizol Corp
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Priority to US15/126,739 priority Critical patent/US20170088789A1/en
Assigned to THE LUBRIZOL CORPORATION reassignment THE LUBRIZOL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CRESSEY, DAVID, GRISSO, BRYAN A., DIMITRAKIS, WILLIAM J., PRICE, DAVID, SCHOBER, BARTON J., KNAPTON, DANIEL J., PADMANABHAN, Kodunthirapully S., VISGER, DANIEL C.
Publication of US20170088789A1 publication Critical patent/US20170088789A1/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • 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
    • C10M157/04—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 at least one of them being a nitrogen-containing compound
    • 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
    • C10M2205/024—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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026—Butene
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • 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
    • 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
    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • 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
    • 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
    • C10N2020/073—Star shaped polymers
    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/68—Shear stability
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/08—Hydraulic fluids, e.g. brake-fluids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • 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
    • C10N2040/255—Gasoline engines
    • 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
    • C10N2070/00—Specific manufacturing methods for lubricant compositions
    • C10N2220/021—
    • C10N2220/029—
    • C10N2230/02—
    • C10N2230/04—
    • C10N2230/06—
    • C10N2230/68—
    • C10N2240/04—
    • C10N2240/08—
    • C10N2240/10—

Definitions

  • the disclosed technology relates to lubricant formulations containing a mixture of viscosity modifying polymers: a (meth)acrylate-containing polymer comprising a multiplicity of arms, and an ethylene/olefin copolymer comprising polymerized propylene monomers.
  • U.S. Application 2008/0015131 discloses lubricants containing an olefin copolymer and an acrylate copolymer.
  • a disclosed polymer is an ethylene aliphatic olefin copolymer wherein the aliphatic olefin contains from 3 to about 24 carbon atoms, the copolymer having M n ranging from about 600 to about 5000.
  • the ethylene content may be about 20 mole % to about 85 mole %.
  • the copolymer is an ethylene-propylene copolymer.
  • the lubricant compositions are said to exhibit good low temperature and shear stability performance.
  • the lubricants include automatic transmission, manual transmission, and gear lubricants.
  • the amount of the compound employed to impart halogen, nitroxide group, or dithioether functionality into the core portion in one embodiment is 0.001 to 0.10 moles per mole of monomer, in another embodiment 0.001 to 0.05 moles per mole of monomer, and in yet another embodiment 0.001 to 0.03 moles per mole of monomer in the arms of the polymer.
  • the polymer may comprise (i) a core portion comprising a polyvalent (meth) acrylic monomer, oligomer or polymer thereof or a polyvalent divinyl non-acrylic monomer, oligomer or polymer thereof; and (ii) at least two arms of polymerized alkyl (meth)acrylate ester.
  • the core portion will further comprise a functional group of formula (Ia):
  • the polymer is reacted by copolymerization or grafting onto or into the arms or core with an acylating agent and an amine to form a dispersant viscosity modifier (often referred to as a DVM), thus named because such materials exhibit both dispersant and viscosity modifying properties.
  • a dispersant viscosity modifier often referred to as a DVM
  • the polyol in one embodiment contains 2 to 20 carbon atoms, or in other embodiments 3 to 15 or 4 to 12; and the number of hydroxyl groups present in one embodiment is 2 to 10, in another embodiment 2 to 4 and in another embodiment 2.
  • polyols include ethylene glycol, poly (ethylene glycols), alkane diols such as 1,6-hexanene diol or triols such as trimethylolpropane, or oligomerized trimethylolpropanes.
  • Examples of a polyamine include polyalkylenepolyamines, such as, ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylene pentamine, pentaethylenehexamine and mixtures thereof.
  • the mole ratio of polymer arms to coupling agent may be 50:1 to 0.5:1, or 30:1 to 1:1, or 7:1 to 2:1.
  • the desired ratio may also be adjusted to take into account the length of the arms, longer arms sometimes tolerating or requiring more coupling agent than shorter arms.
  • 1 to 5 parts by weight, or 2 to 4, or 2.5 to 3, parts by weight of a coupling agent such as ethylene glycol dimethacrylate may be used to react with pre-formed arms prepared with 100 parts by weight of (meth)acrylate monomers.
  • the star polymer overall has a weight average molecular weight (M w ) of 5000 to 1,000,000, in another embodiment 10,000 to 1,000,000, in another embodiment 10,000 to 600,000 and in another embodiment 15,000 to 500,000 or 8,000 to 1,000,000 or 8,000 to 700,000.
  • M w weight average molecular weight
  • Examples of a suitable M w include 15,000 to 350,000, 15,000 to 50,000, 150,000 to 280,000, or 25,000 to 140,000, or to 280,000, or to 600,000.
  • Guerbet alcohols typically have one or more carbon chains with branching at the ⁇ - or higher position.
  • the Guerbet alcohols in general may contain, in various embodiments, 10 to 60, or 12 to 60, or 16 to 40, or 20 to 30 carbon atoms.
  • Methods to prepare Guerbet alcohols are disclosed in U.S. Pat. No. 4,767,815 (see column 5, line 39 to column 6, line 32). Correspondingly longer arms may also be used.
  • Suitable olefin copolymers are well known and are described, for instance, in U.S. Application 2008/0015131, Vinci et al. Such polymers are commercially available as LucantTM polymer, TrileneTM polymers, NordelTM polymers, ParatoneTM polymers, Lubrizol® 70XY series polymers, and RoyaleneTM polymers.
  • the overbased materials may be prepared by reacting an acidic material (typically an inorganic acid or lower carboxylic acid such as carbon dioxide) with a mixture comprising an acidic organic compound, a reaction medium comprising at least one inert, organic solvent (such as mineral oil, naphtha, toluene, xylene) for said acidic organic material, a stoichiometric excess of a metal base, and a promoter such as a phenol or alcohol.
  • the acidic organic material will normally have a sufficient number of carbon atoms to provide a degree of solubility in oil.
  • the amount of excess metal is commonly expressed in terms of metal ratio.
  • the term “metal ratio” is the ratio of the total equivalents of the metal to the equivalents of the acidic organic compound.
  • a neutral metal salt has a metal ratio of one.
  • a salt having 4.5 times as much metal as present in a normal salt will have metal excess of 3.5 equivalents, or a ratio of 4.5.
  • dispersants include polymeric dispersant additives, which are generally hydrocarbon-based polymers which contain polar functionality to impart dispersancy characteristics to the polymer.
  • the resulting acid may be reacted with a basic metal compound to form the salt.
  • the metal M having a valence n, generally is aluminum, lead, tin, manganese, cobalt, nickel, zinc, or copper, and in many cases, zinc, to form zinc dialkyldithiophosphates.
  • Such materials are well known and readily available to those skilled in the art of lubricant formulation. Suitable variations to provide good phosphorus retention in an engine are disclosed, for instance, in US published application 2008-0015129, see, e.g., claims.
  • antioxidants encompass phenolic antioxidants, which may be hindered phenolic antioxidants, one or both orthopositions on a phenolic ring being occupied by bulky groups such as t-butyl.
  • the para position may also be occupied by a hydrocarbyl group or a group bridging two aromatic rings.
  • the para position is occupied by an ester-containing group, such as, for example, an antioxidant of the formula
  • R 3 is a hydrocarbyl group such as an alkyl group containing, e.g., 1 to 18 or 2 to 12 or 2 to 8 or 2 to 6 carbon atoms; and t-alkyl can be t-butyl.
  • Such antioxidants are described in greater detail in U.S. Pat. No. 6,559,105.
  • antioxidants will, of course, depend on the specific antioxidant and its individual effectiveness, but illustrative total amounts can be 0.01 to 5 percent by weight or 0.15 to 4.5 percent or 0.2 to 4 percent or 0.5 to 2 percent or 0.05 to 0.1 percent.
  • Non-phosphorus-containing anti-wear agents include borate esters (including borated epoxides), dithiocarbamate compounds, molybdenum-containing compounds, and sulfurized olefins.
  • Anti-foam agents also known as foam inhibitors are known in the art and include but are not limited to organic silicones and non-silicon foam inhibitors. Some examples of organic silicones include dimethyl silicone and polysiloxanes. Some examples of non-silicon foam inhibitors include copolymers of ethyl acrylate and 2-ethylhexylacrylate, copolymers of ethyl acrylate, 2-ethylhexyl acrylate, and vinyl acetate, polyethers, polyacrylates, and mixtures thereof. In some embodiments the antifoam agent may be a polyacrylate. Antifoam agents may be present in a lubricant composition in amounts of 0.001 to 0.012 percent by weight or to 0.004 percent, or 0.001 to 0.003 percent by weight.
  • a lubricant further comprises (in addition to the polymers disclosed herein) at least one of a detergent, a dispersant, an antioxidant, an anti-wear agent, a friction modifier, a pour point depressant, a corrosion inhibitor, and antifoam agent, a demulsifier, a metal deactivator, or a metal salt of a phosphorus acid; in one embodiment a lubricant composition further comprises an overbased detergent in an amount of 0.5 to 2.0 weight percent and an ashless dispersant in an amount of 0.5 to 3 weight percent.
  • the additives and the lubricant compositions described above may be used for lubricating a mechanical device, and such lubrication may comprise supplying to the device, or to that part of the device that admits the lubricant, the lubricant as described herein.
  • suitable devices may include internal combustion engines such spark-ignited engines, passenger car engines, or motorcycle engines; gears, clutches, transmissions, hydraulic devices, and turbines.
  • the lubricant may be a liquid lubricant or a grease.
  • Engines may include internal combustion engines such as a gasoline or spark-ignited engine such as a passenger car engine, a diesel or compression-ignited engine such as a passenger car diesel engine, heavy duty diesel truck engine, a natural gas fueled engine such as a stationary power engine, an alcohol-fueled engine, a mixed gasoline/alcohol fueled engine, a bio-diesel fueled engine, a hydrogen-fueled engine, a two-cycle engine, an aviation piston or turbine engine, or a marine or railroad diesel engine.
  • the internal combustion engine may be a diesel fueled engine and in another embodiment a gasoline fueled engine or a hydrogen-fueled engine.
  • the internal combustion engine may be fitted with an emission control system or a turbocharger. Examples of emission control systems include diesel particulate filters (DPF), exhaust gas recirculation (EGR), and systems employing selective catalytic reduction (SCR).
  • DPF diesel particulate filters
  • EGR exhaust gas recirculation
  • SCR selective catalytic reduction
  • Lubricants are prepared in a formulation to have a viscosity index of about 140 with a variety of ISO grades (represented by kinematic viscosity at 40° C., mm 2 /s).
  • the lubricants are prepared from the base oils indicated, and each formulation contains about 0.85% of a commercial dispersant/inhibitor (“DI”) package which in turn comprises a zinc dialkyldithiophosphate, a phenolic antioxidant, calcium detergents (alkylsulfonate(s) and phenate(s)), an alkyl-substituted carboxylic anhydride, and small amounts of other inhibitor(s) and other conventional materials, as well as diluent oil.
  • DI dispersant/inhibitor
  • Formulations can be made in various viscosity grades, as illustrated in Table I:
  • Lubricants are prepared targeting an ISO 46 viscosity grade, using varying amounts and various relative ratios of star polymer and ethylene/olefin copolymer.
  • the DI package is the same commercial package that is used in Examples 1-5. Footnotes a, b, and c from Table I apply.
  • Formulations are prepared as shown in Table IV, below, using comb polymers identified as d or e in the footnotes or, for reference, a linear methacrylate polymer.
  • Example 18 (ref) 19 Base oil composition 3 cSt Group III, % 85.0 86.4 DI Package f , % 9.18 9.18 Pour point depressant g 0.1 0.2 Star polymer b , % 2.64 1.85 Ethylene/olefin copolymer c , % 0 0.2 Viscosity properties: KV @ 40° C. (mm 2 /s) 36.2 37.2 KV @ 100° C. (mm 2 /s) 8.30 8.12 Viscosity Index (VI) 216 201 b As defined in Table I; except containing 54% oil (amount presented in table on oil-free basis).

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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)
  • Lubricants (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
US15/126,739 2014-03-19 2015-02-24 Lubricants containing blends of polymers Abandoned US20170088789A1 (en)

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US15/126,739 US20170088789A1 (en) 2014-03-19 2015-02-24 Lubricants containing blends of polymers
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US (1) US20170088789A1 (enrdf_load_stackoverflow)
EP (1) EP3119860A1 (enrdf_load_stackoverflow)
JP (1) JP2017508053A (enrdf_load_stackoverflow)
KR (1) KR20160135311A (enrdf_load_stackoverflow)
CN (1) CN106459813A (enrdf_load_stackoverflow)
AU (1) AU2015231906A1 (enrdf_load_stackoverflow)
CA (1) CA2943053A1 (enrdf_load_stackoverflow)
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170175029A1 (en) * 2014-03-31 2017-06-22 Idemitsu Kosan Co., Ltd. Lubricating-oil composition
EP3434755A1 (en) * 2017-07-24 2019-01-30 Infineum International Limited Motorcycle lubricant
WO2019166977A1 (en) 2018-03-02 2019-09-06 Chevron Oronite Technology B.V. Lubricating oil composition providing wear protection at low viscosity
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CN112867781A (zh) * 2018-10-26 2021-05-28 出光兴产株式会社 润滑油组合物
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CN106459813A (zh) 2017-02-22

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