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WO2016018462A1 - Composition d'huile de graissage sae 15w-30 ayant une stabilité à l'oxydation améliorée - Google Patents

Composition d'huile de graissage sae 15w-30 ayant une stabilité à l'oxydation améliorée Download PDF

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Publication number
WO2016018462A1
WO2016018462A1 PCT/US2015/016264 US2015016264W WO2016018462A1 WO 2016018462 A1 WO2016018462 A1 WO 2016018462A1 US 2015016264 W US2015016264 W US 2015016264W WO 2016018462 A1 WO2016018462 A1 WO 2016018462A1
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WIPO (PCT)
Prior art keywords
lubricating oil
oil composition
base oil
viscosity
group
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Ceased
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PCT/US2015/016264
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English (en)
Inventor
John Coakwell GREEN
Melanie Frances TOBIAS
Kevin David CARABELL
John Michael Rosenbaum
David Christian Kramer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chevron USA Inc
Chevron Oronite Co LLC
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Chevron USA Inc
Chevron Oronite Co LLC
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Publication of WO2016018462A1 publication Critical patent/WO2016018462A1/fr
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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
    • 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
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/02—Specified values of viscosity or viscosity index
    • 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
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/22—Compounds containing sulfur, selenium or tellurium
    • 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M133/12—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to a carbon atom of a six-membered aromatic ring
    • 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/38—Heterocyclic nitrogen compounds
    • C10M133/44—Five-membered ring containing nitrogen and carbon only
    • 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
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • 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
    • C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
    • C10M2215/28—Amides; Imides
    • 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
    • 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—Overbased sulfonic acid salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • 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
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • 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
    • C10N2030/40—Low content or no content compositions
    • C10N2030/45—Ash-less or low ash content
    • 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
    • C10N2030/52—Base number [TBN]
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/74—Noack Volatility
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel engines

Definitions

  • This application is directed to a SAE 15W-30 lubricating oil composition having improved oxidative stability that is made using two different grades of Group II base oil, a detergent inhibitor additive package, a Total Base Number (TBN) booster, and a viscosity modifier.
  • a SAE 15W-30 lubricating oil composition having improved oxidative stability that is made using two different grades of Group II base oil, a detergent inhibitor additive package, a Total Base Number (TBN) booster, and a viscosity modifier.
  • TBN Total Base Number
  • Lubricating oil compositions are needed that meet modern performance specifications and that show improved performance in oxidative stability and other tests.
  • a SAE 15W-30 lubricating oil composition can be a lower-cost alternative to SAE 10W-30 lubricating oil compositions.
  • a SAE 15W-30 lubricating oil composition can provide similar fuel economy benefits as a SAE 10W-30 lubricating oil composition, but with enhanced engine wear protection due to the SAE 15W-30 lubricating oil composition having a base oil blend viscosity that is almost as high as a SAE 15W-40 lubricating oil composition.
  • This application provides a lubricating oil composition, comprising:
  • lubricating oil composition has an SAE 15W-30 viscosity grade by SAE J300, a TBN from 8.55 to 1 1.00 mg KOH/g by ASTM D2896-1 1; and wherein the lubricating oil composition provides an Induction Time in a Caterpillar Micro-Oxidation Test from 270 to 450 minutes.
  • This application also provides a process for making a lubricating oil composition, comprising: a. blending a first Group II base oil having a kinematic viscosity at 100°C from 5.0 to 8.0 mm 2 /s with a second Group II base oil having a second kinematic viscosity at 100°C from 10 to 14 mm 2 /s to make a blended base oil mixture having a blended base oil kinematic viscosity at 100°C from 6.0 mm 2 /s to 7.3 mm 2 /s; and b. adding to the blended base oil mixture: i. a detergent inhibitor additive package designed to meet an API CJ-4
  • the lubricating oil composition has an SAE 15W-30 viscosity grade by SAE J300, a TBN from 8.55 to 11.00 mg KOH/g by ASTM D2896-11 ; and wherein the lubricating oil composition provides an Induction Time in a Caterpillar Micro-Oxidation Test from 270 to 450 minutes.
  • This application also provides a method of operating an engine, comprising lubricating an engine with a lubricating oil composition comprising:
  • the present invention may suitably comprise, consist of, or consist essentially of, the elements in the claims, as described herein.
  • Base oil refers to a hydrocarbon fluid to which other oils or substances are added to produce a lubricant.
  • Lubricant refers to substances (usually a fluid under operating conditions) introduced between two moving surfaces so to reduce the friction and wear between them.
  • Group II base oil refers to a base oil which contains greater than or equal to 90% saturates and less than or equal to 0.03% sulfur and has a viscosity index greater than or equal to 80 and less than 120 using the American Society for Testing and Materials (ASTM) methods specified in Table E-l of American Petroleum Institute Publication 1509 (REV:01-SEP- 201 1).
  • ASTM International formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards.
  • Group 11+ base oil refers to a Group II base oil having a viscosity index greater than or equal to 110 and less than 120.
  • Group I, II, III, IV, and V base oils are defined in Table E-l of American Petroleum Institute Publication 1509 (REV:01-SEP-201 1)
  • Kinematic viscosity refers to the ratio of the dynamic viscosity to the density of a material at the same temperature and pressure.
  • Kinematic viscosity is measured at a defined temperature (e.g., 100°C) by ASTM D445-12. Shorthand for kinematic viscosity at a defined temperature may be expressed as KV100 or KV40, for example.
  • Viscosity index (VI) is an empirical, unit-less number indicating the effect of temperature change on the kinematic viscosity of the base oil or lubricant. A higher VI indicates a smaller decrease in kinematic viscosity with increasing temperature. VI is measured according to ASTM D2270-10 El .
  • DI additive package refers to a carefully blended mixture of additives used to formulate lubricating oil compositions that will meet certain performance criteria. DI additive packages are commercially available from a number of additive companies. Examples of companies that supply these DI additive packages include Oronite, Lubrizol, and Infineum.
  • succinimide refers to the product of a reaction of an alkenyl substituted succinic acid or anhydride with a nitrogen-containing compound.
  • succinimide dispersants are referred to as such since they normally contain nitrogen largely in the form of imide functionality, although the amide functionality may be in the form of amine salts, amides, imidazolines, as well as mixtures thereof. Procedures for preparing succinimide dispersants are described, for example, in U.S. Pat. Nos. 3,172,892; 3,219,666; 3,272,746; 4,234,435; 6, 165,235; and 6,440,905.
  • Trim stock refers to a base oil that may be blended with two or more other base oils, in an amount less than the two or more other base oils, so as to bring a low-temp cranking viscosity and NOACK volatility of a blended base oil mixture into a range to meet SAE J300 and API CJ-4 requirements.
  • a trim stock for example, may be a Group II, a Group II+, a Group III, a Group IV, or a Group V base oil. The use and selection of a trim stock is described in U.S. Patent Publication No. 2010- 0077842 Al.
  • NOACK volatility is determined using ASTM D5800 - 10, which is the Standard Test Method for Evaporation Loss of Lubricating Oils by the NOACK Method.
  • Society of Automotive Engineers (SAE) J300 refers to the Engine Oil Viscosity
  • Multigrade Engine Oil refers to a lubricant meeting requirements of both a SAE viscosity grade in the upper portion of the SAE J300 table and an SAE viscosity grade in the lower portion of the SAE J300 table, as described previously.
  • Two non-limiting examples of multigrade engine oils are SAE 15W-40 or SAE 15W-30.
  • TBN booster refers to an additive, or mixture of additives, that comprises a nitrogen- containing dispersant having a Total Base Number (TBN) from 45 to 145 mg KOH/g by ASTM D2896-1 1.
  • the nitrogen-containing dispersant may be ashless, for example a succinimide dispersant.
  • the TBN booster can be designed primarily to provide additional basicity to the formulation (measured as Total Base Number [TBN], by ASTM D2896-1 1).
  • Viscosity Modifier refers to polymeric additives that provide lubricants with high and low temperature operabiiity. Viscosity modifiers are added to lubricants to change the lubricant's viscous response to temperature, and they improve the lubricant's viscosity index. Viscosity modifiers are also known as VI improvers and viscosity index improvers.
  • Plastic Point Depressant refers to an additive that lowers the pour point of a. wax -containing lubricant by reducing the tendency of the wax to solidify.
  • Oxidative Stability refers to the resistance of a base oil or lubricant to react with oxygen, which can degrade the oil and contribute to varnish, deposits, and poor engine performance. Oxidative stability can be measured by a number of oxidation tests, including pressurized differential scanning calorimeter (PDSC), Caterpillar Micro-Oxidation test (CMOT), and Moderately High Temperature Thermo-Oxidation Engine Test (TEOST MHT).
  • PDSC pressurized differential scanning calorimeter
  • CMOT Caterpillar Micro-Oxidation test
  • TEOST MHT Moderately High Temperature Thermo-Oxidation Engine Test
  • SSI Shear Stability Index
  • API CJ-4 service category refers to lubricants for use in high-speed four-stroke cycle diesel engines designed to meet 2010 model year on-highway and Tier 4 non-road exhaust emission standards as well as for previous model years. These lubricants are especially effective at sustaining emission control system durability where particulate filters and other advanced aftertreatment systems are used.
  • API CJ-4 requirements were introduced in 2006 and are summarized below.
  • the Standard Specification for Performance of Active API Service Category Engine Oils is ASTM D4485-1 lb.
  • the associated ASTM test numbers are shown in parentheses in the summarized requirements, below.
  • the lubricating oil composition comprises a combination of at least two Group II base oils and additives that are selected to meet heavy duty engine oil specifications, including API-CJ-4.
  • Each Group II base oil in the lubricating oil composition has a different kinematic viscosity at 100°C.
  • a first Group II base oil has a first kinematic viscosity at 100°C from 5,0 to 8,0 mm 2 /s. In one embodiment the first kinematic viscosity at 100°C is from 6.2 to 7.0, such as from 6.3 to 6.9 mrn 2 /s.
  • a second Group II base oil has a second kinematic viscosity from 10 to 14 mm7s, such as from 1 1 to 13, or from 1 1 ,7 to 12.7 mm 2 /s.
  • At least one or all of the Group II base oils have viscosity indexes less than 110, such as from 90 to 109, or from 95 to 109.
  • the first Group II base oil has a first viscosity index less than 110 and the second Group II base oil has a second viscosity index less than 110.
  • At least two Group II base oils are blended together to make a blended base oil mixture having a blended base oil viscosity from 6.0 to 7.3 mra7s.
  • the blended base oil mixture has a blended base oil viscosity from 6.50 to 6.80 mm7s.
  • no trim stock is blended into the blended base oil mixture or added to the blended base oil mixture, as trim stock is not needed to bring the lubricating oil composition to the SAE 15W-30 viscosity grade.
  • a trim stock can be added to the blended base oil mixture.
  • the lubricating oil composition also comprises a detergent inhibitor additive package designed to meet a CJ-4 service category.
  • the detergent inhibitor additive package is one designed to meet the CJ-4 service category in a multigrade engine oil blended with one or more Group II base oils. Different detergent inhibitor additive packages are needed in Group II base oils because of their typically lower oxidative stability compared to more highly refined Group III or synthetic Group IV base oils.
  • the multigrade engine oil that the detergent inhibitor additive package is designed for is a SAE 15W-40.
  • the amount of the detergent inhibitor additive package in the lubricating oil composition can be from 12 to 20 wt%, such as from 13 to 19 wt%, or from 14 to l7 wt%.
  • the detergent inhibitor additive package comprises at least one detergent, at least one dispersant, at least one antiwear agent, at least one antioxidant, and other additives.
  • the detergent inhibitor additive package typically comprises at least one metal- containing detergent.
  • the detergent can function as one or more of a) a detergent to reduce or remove deposits, b) as an acid neutralizer, or c) as a rust inhibitor.
  • the metal-containing detergent can comprise a polar head with a long hydrophobic tail, with the polar head comprising a metal salt of an acid organic compound.
  • the metal- containing detergent is overbased. Overbased metal-containing detergents can be single phase, homogeneous Newtonian systems characterized by a metal content in excess of that which would be present according to the stoichiometry of the metal and the particular acidic organic compound reacted with the metal to prepare the detergent.
  • An overbased metal- containing detergent can be made by reacting an acidic material (typically an inorganic acid or lower carboxylic acid) with a mixture comprising an acidic organic compound in a reaction medium comprising at least one inert, organic solvent in the presence of a stoichiometric excess of a metal base and a promoter.
  • acidic materials used to make metal-containing detergents are carboxylic acids, sulfonic acids, phosphorus-containing acids, phenols, and mixtures thereof.
  • Mixtures of different metal-containing detergents can be present in the detergent inhibitor additive package.
  • the detergent inhibitor additive package typically comprises dispersants that can be used to maintain in suspension insoluble materials resulting from oxidation during use. The dispersants can be ashless.
  • Nitrogen-containing ashless dispersants are basic, and contribute to the TBN of the lubricating oil composition.
  • Representative ashless dispersants include, but are not limited to, amines, alcohols, amides, or ester polar moieties attached to a polymer backbone via bridging groups.
  • Ashless dispersants can be selected, for example, from soluble salts, esters, amino-esters, amides, imides, and oxazolines of long chain hydrocarbon substituted mono and dicarboxylic acids or their anhydrides; thiocarboxylate derivatives of long chain hydrocarbons, long chain aliphatic hydrocarbons having polyamine attached directly thereto; and Mannich condensation products formed by condensing a long chain substituted phenol with formaldehyde and polyalkylene polyamine.
  • Carboxylic dispersants are reaction products of carboxylic acylating agents with nitrogen containing compounds, organic hydroxyl compounds, or aromatic compounds. Succinimide dispersants are a type of carboxylic dispersant.
  • the detergent inhibitor additive package comprises more than one dispersant, such as a blend of at least at least two of the following: a succinimide dispersant, a Mannich dispersant, an ester-containing dispersant, a condensation product of a fatty hydrocarbyl monocarboxylic acylating agent with an amine or ammonia, an alkyl amino phenol dispersant, a hydrocarbyl-amine dispersant, a polyether dispersant, a polyetheramine dispersant, a viscosity modifier containing dispersant functionality (for example polymeric viscosity index modifiers (VMs) containing dispersant functionality).
  • a succinimide dispersant such as a blend of at least at least two of the following: a succinimide dispersant, a Mannich dispersant, an ester-containing dispersant, a condensation product of a fatty hydrocarbyl monocarboxylic acylating agent with an amine or ammonia, an alkyl amino
  • the detergent inhibitor additive package comprises at least one ethylene carbonate- treated bis-succinimide dispersant and at least one borated bis-succinimide dispersant, such as those described in US20030224948A1 .
  • Examples of detergent inhibitor additive packages with more than one dispersant are described in U.S. Patent Nos. 7,902, 130; 8,183, 187; and 8,598,099; and in WO2010075103A2.
  • the detergent inhibitor additive package can comprise antioxidant compounds. These oxidation inhibitors can include, for example, hindered phenols, ashless oil soluble phenates and sulfurized phenates, alkyl-substituted diphenylamine, alkyl-substituted phenyl, naphthylamines and the like, and mixtures thereof.
  • the detergent inhibitor additive package can comprise anti-wear agents, such as molybdenum-containing complexes and metal dihydrocarbyl dithiophosphate. As their name implies, anti-wear agents reduce wear of moving metallic parts. Examples of anti-wear agents include, but are not limited to, phosphates, carbamates, esters, molybdenum complexes, and mixtures thereof.
  • the detergent inhibitor additive package can comprise a molybdenum/nitrogen-containing complex.
  • the detergent inhibitor additive package can comprise a zinc dialkylthiophosphate.
  • the detergent inhibitor additive package can comprise one or more other additives that impart auxiliary functions to help meet performance specifications.
  • these other additives can include, for example, friction modifiers, rust inhibitors, dehazing agents, demulsifying agents, metal deactivating agents, pour point depressants, viscosity modifiers, antifoaming agents, co-solvents, package compatibilisers, corrosion-inhibitors, dyes, extreme pressure agents, multifunctional additives, and mixtures thereof.
  • friction modifiers include fatty alcohol, fatty acid, amine, borated ester, other esters, phosphates, phosphites, phosphonates, molybdenum compounds, and mixtures thereof.
  • molybdenum compounds that can be used as friction modifiers include organo molybdenum compounds, molybdenum dialkyldithiocarbamates, molybdenum dialkylthiophosphates, molybdenum disulphide, trimolybdenum cluster
  • dialkyldithiocarbamates non-sulphur molybdenum compounds and mixtures thereof.
  • rust inhibitors include one or more of the following: nonionic polyoxy ethylene surface active agents: poly oxy ethylene lauryl ether, poly oxy ethylene higher alcohol ether, polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene octyl stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene sorbitol monostearate, polyoxyethylene sorbitol mono-oleate, and polyethylene glycol mono-oleate.
  • nonionic polyoxy ethylene surface active agents poly oxy ethylene lauryl ether, poly oxy ethylene higher alcohol ether, polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene octyl stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene sorbitol monostearate, polyoxyethylene sorbitol mono-oleate, and poly
  • rust inhibitors are stearic acid and other fatty acids, dicarboxylic acids, metal soaps, fatty acid amine salts, metal salts of heavy sulfonic acid, partial carboxylic acid ester of polyhydric alcohol, and phosphoric ester.
  • demulsifying agents include the addition product of alkylphenol and ethylene oxide, polyoxyethylene alkyl ether, polyoxyethylene sorbitan ester, and
  • pour point depressants are polymethacrylates, polyalkylmethacrylates, polyacrylates, di(tetra paraffin phenol) phthalate, condensation products of tetra paraffin phenol, and condensation product of a chlorinated paraffin wax with naphthalene.
  • viscosity modifiers include polymethacrylate-type polymers, ethylene-propylene copolymers, styrene-isoprene copolymers, hydrated styrene-isoprene copolymers, polyisobutylene, dispersant type viscosity modifiers, and mixtures thereof.
  • antifoaming agents examples include alkyl methacrylate polymers and dimethyl silicone polymers.
  • extreme pressure agents include zinc dialky- 1 -dithiophosphate (primary alkyl, secondary alkyl, and aryl type), diphenyl sulfide, methyltrichlorostearate, chlorinated naphthalene, fluoroalkylpolysiloxane, lead naphthenate, neutralized phosphates,
  • dithiophosphates sulfur-free phosphates, and combinations thereof.
  • metal deactivating agents include disalicylidene propylenediamine, triazole derivatives, mercaptobenzothiazoles, mercaptobenzimidazoles, and combinations thereof .
  • multifunctional additives include sulfurized oxymolybdenum dithiocarbamate, sulfurized oxymolybdenum organo phosphorodithioate, oxymolybdenum monoglyceride, oxymolybdenum diethylate amide, amine-molybdenum complex compound, and sulfur-containing molybdenum complex compound.
  • the detergent inhibitor additive package is added to the blended base oil mixture, along with 0.50 to 4.95 wt% of a viscosity modifier.
  • the lubricating oil composition comprises 0.5 to 4,95 wt% viscosity modifier, on an as received basis in a carrier oil. Irs other embodiments, the lubricating oil composition comprises 0.50 to 4.00 wt% or 0,75 to 3.5 wt% of the viscosity modifier. In one
  • the lubricating oil composition comprises 1.50 to 2.50 wt% of the viscosity modifier.
  • Viscosity modifiers are usually supplied diluted in a carrier oil and they constitute about 5 to 50 wt% active ingredient.
  • the viscosity modifier imparts higher viscosity at elevated temperatures, and acceptable viscosity at low temperatures.
  • Suitable viscosity modifiers are polymers and include high molecular weight (polymeric) hydrocarbons, polyesters and viscosity index improver dispersants that function as both a viscosity index improver and a dispersant.
  • Typical molecular weights of these viscosity modifiers are from 10,000 to 1,000,000, such as from 20,000 to 500,000, or from 50,000 to 200,000.
  • viscosity modifiers are polymers and copolymers of methacrylate, butadiene, olefins, or alkylated styrenes.
  • Poiyisobutylene is a specific example.
  • Another suitable viscosity modifier is polymethacrylate (copolymers of various chain length alkyl methacrylates, for example).
  • viscosity modifiers include copolymers of ethylene and propylene, hydrogenated block copolymers of styrene and isoprene, hydrated styreneisoprene copolymers, polybutene, polyisobudylene, vinylpyrrolidone and methacrylate copolymers, and polyacrylates (copolymers of various chain length acrylates, for example).
  • the viscosity modifier is an olefin copolymer or a hydrogenated styreneisoprene copolymer of 50,000 to 200,000 molecular weight.
  • the viscosity modifier is a non-dispersant olefin copolymer.
  • the viscosity- modifier is a shear stable polymer, such as a shear stable non-dispersant olefin copolymer.
  • a shear stable viscosity modifier has a shear stability index (SSI) of 10-40.
  • the viscosity modifier contains: a) an amino alcohol reaction product prepared by isomerizing a normal alpha olefin to form an internal olefin; epoxidizing said olefin; and reacting with a mono-hydroxyl hydroearbyl amine; and b) an ester of glycerol and a carboxylic acid containing 0 to 3 double bonds.
  • the lubricating oil composition can also comprise a TBN booster that raises the TBN of the lubricating oil composition.
  • the TBN booster raises the TBN of the lubricating oil composition to from 8.55 to 1 1.00 mg KOH/g by ASTM D2896-11.
  • the TBN booster can be designed primarily to provide additional basicity to the formulation (measured as total base number (TBN), by ASTM D2896-1 1).
  • TBN total base number
  • the additional basicity provided by a TBN booster can be used to distinguish between different formulations of lubricating oil compositions and can also provide additional corrosion protection, since corrosion is less likely to occur in a moderately alkaline environment. Acids can be generated from fuel combustion or from oxidation of engine oil in hot spots, and the additional basicity can neutralize these acids. If the TBN of the engine oil is too high, the engine oil can also become aggressive to metal surfaces and appear as wear in engine tests.
  • the lubricating oil composition comprises 0.50 to 3.50 wt% of the TBN booster, such as (for example) 0.75 to 2.25 wt% of the TBN booster.
  • the TBN booster comprises at least 60 wt% dispersants, at least an antioxidant, and less than 5 wt% overbased metal detergent. In another embodiment, the TBN booster comprises at least two dispersants, at least an anti-oxidant, and at least a detergent.
  • dispersants that can be used in the TBN booster include one or more of borated dispersants and non-borated dispersants.
  • the dispersants used in the TBN booster are ashless.
  • examples of ashless dispersants are alkenyl succinimides and succinimides. These dispersants can be further modified by reaction with, for example, with boron or ethylene carbonate. Ester-based ashless dispersants derived from long chain hydrocarbon-substituted carboxylic acids and hydroxy compounds may also be employed.
  • Other ashless dispersants are those derived from polyisobutenyl succinic anhydride.
  • the dispersant used in the TBN booster is a non-conventional polysuccinimide dispersant derived from terpolymer PIBSA, N-phenylenediamine and a polyether amine. Dispersants of this type are described in U.S. Pat. No. 7,745,541.
  • antioxidants examples include one or more of esters of thiodicarboxylic acids, di-thiocarbamates, such as 15-methylenebis (di-butyl di- thiocarbamate), salts of di-thiophosphoric acids, alkyl or aryl phosphates.
  • Molybdenum compounds such as amine-molybdenum complex compound and molybdenum di- thiocarbamates may also be used as anti-oxidants and hindered phenols, such as 4,4'- methylene-bis(2,6-di-tert-butylphenol), 4,4'-bis(2,6-di-tert-butylphenol), 4,4'-bis(2-methyl - 6 -tert-butylphenol), 2,2'-methylene-bis(4-methyl-6- tert-butylphenol), 4,4'-butylidene-bis (3-methyl- 6-tertbutylphenol), 4,4'-isopropylidene-bis(2,6-di-tertbutylphenol), 2,2'- methylene-bis (4 -methyl- 6-nonylphenol), 2,2'-isobutylidene-bis (4,6 -dimethylphenol), 2,2'- 5-methylene-his (4 -methyl- 6 -cyclohex
  • the TBN booster comprises hindered phenols that do not contribute to the phosphorus, sulfur and sulfated ash content of the engine oil. In one embodiment, the TBN booster comprises 15 to 30 wt% of a diphenyl amine antioxidant. In one embodiment, the TBN booster comprises 20 to 40 wt% of an ashless non- borated dispersant. In one embodiment, the TBN booster comprises 35 to 50 wt% of a borated dispersant. In one embodiment, the TBN booster comprises 0.5 to 3 wt% of a magnesium sulfonate detergent.
  • the TBN booster can comprise 15 to 30 wt% of a diphenyl amine antioxidant, 20 to 40 wt% of an ashless non-borated dispersant, 35 to 50 wt% of an ashless borated dispersant, and 0.5 to 3 wt% of a magnesium sulfonate detergent.
  • diphenyl amine antioxidants that may be included in the TBN booster include monoalkylated diphenylamine, dialkylated diphenylamine, trialkylated
  • diphenylamine and mixtures thereof.
  • Some of these include butyldiphenylamine, di- butyldiphenylamine, oxtyldiphenylamine, di-octyldiphenylamine, nonyldiphenylamine, di- nonyldiphenylamine, t-butyl-t-octyldiphenylamine, and mixtures thereof.
  • overbased metal detergents that can be included in the TBN booster are low and high overbased sulfonic acids or phenols or Mannich condensation products of alkylphenols, aldehydes and amines.
  • the overbased metal detergent in the TBN booster does not include overbased salicylic acids or carboxylic acids.
  • the overbased metal detergent that can be included in the TBN booster is a highly overbased magnesium sulfonate detergent having a TBN of about 300 or greater, such as about 350 to 500.
  • the highly overbased magnesium sulfonate detergent can be a highly overbased magnesium alkyltoluene sulfonate, such as described in U.S. Patent Pub. No. 2011013671 1 Al . Oilier Additives
  • a small amount of pour point depressant can also be blended into the lubricating oil composition.
  • the amount of pour point depressant included in the lubricating oil composition can be 0.01 to 2.00 wt%. Examples of pour point depressants are
  • polymethacrylates polyalkylmefhacryla es, polyacrylaies, diftetra paraffin phenol) phthalate, condensation products of tetra paraffin phenol, and condensation product of a chlorinated paraffin wax with naphthalene.
  • These pour point depressants, and other suitable additives that can be included in the lubricating oil composition are described in Chemistry and Technology of Lubricants (Google eBook), R. M. Mortier, Malcolm F. Fox, S. T. Orszulik, Springer, Apr 14, 201 1.
  • Suitable additives that can be blended into the lubricating oil composition can include friction modifiers, rust inhibitors, dehazing agents, demulsifying agents, metal deactivating agents, antifoaming agents, co-solvents, package compatibilisers, corrosion- inhibitors, dyes, extreme pressure agents, and mixtures thereof.
  • the step of adding the detergent inhibitor additive package, the TBN booster (when used), and the viscosity modifier to the blended base oil mixture is done such that the resulting lubricating oil composition comprises 70 to 85 wt% of the first Group II base oil and from 2.0 to 6.5 wt% of the second Group II base oil.
  • the step of adding the detergent inhibitor additive package, the TBN booster (when used), and the viscosity modifier to the blended base oil mixture is done such that the resulting lubricating oil composition has a sulfated ash from 0.50 to 1.10 wt.%, such as from 0,60 to 1.05 wt%.
  • the step of adding the detergent inhibitor additive package, the TBN booster (when used), and the viscosity modifier to the blended base oil mixture is done such that the resulting lubricating oil composition has a sulfated ash of 1.0 or less, such as 0.65 to 1.00 wt%
  • the step of adding the TBN booster to the blended base oil mixture is done such that the lubricating oil composition comprises 0.75 to 2.25 wt% of the TBN booster.
  • the step of adding the viscosity modifier to the blended base oil mixture is done such that the lubricating oil composition comprises 0.75 to 3.5 wt% of the viscosity modifier.
  • the SAE 15W-30 lubricating oil composition of the present invention meets API CJ-4.
  • Other industry specifications that the SAE 15 W-30 lubricating oil composition can meet include API SM, Cummins CES 20081, Daimler MB 228.31, Volvo VDS-4, Mack Trucks (Volvo) EO-0 Premium Plus 2007, Renault Tracks (Volvo) RLD-3, Caterpillar ECF-3, Detroit Diesel Power Guard 93K218, Deutz DQC HI- 10 LA, MAM Track & Bus M3575.
  • the SAE 15 W-30 lubricating oil composition of the present invention has excellent oxidative stability as demonstrated in the Caterpillar Micro-Oxidation Test (CMOT).
  • CMOT Caterpillar Micro-Oxidation Test
  • CMOT is a test used to measure the thermal and oxidative stability of fully formulated diesel engine oils under thin film conditions. This test provides an indication as to whether a candidate oil is worthy of field trial in a Caterpillar 3600 series engine. The results generated in the CMOT give an Induction Time in minutes indicating relative time for antioxidants in the oil to deplete.
  • the development of the Caterpillar Micro -Oxidation Test (CMOT) is discussed in #890239 of the SAE Technical Paper Series "Evaluation of Diesel Engine Lubricants by Micro-Oxidation," authored by Fulvio N. Zerla and Robert A. Moore.
  • the induction time to deposit formation in the CMOT can be determined by calculating the intercept between a baseline formed where minimal deposits are seen, and the slope formed where a rapid rise in deposit formation is seen. Longer induction times correspond to improved deposit control. An Induction Time of 70 minutes or greater is generally considered acceptable for some heavy duty engine oils. In its publication SEBU7003-4 "Caterpillar 3600 Series and C 280 Series Diesel Engines Fluids Recommendation", Caterpillar specifies that engine oil must demonstrate a minimum Induction Time of 90 minutes in the CMOT.
  • the SAE 15W-30 lubricating oil composition provides an Induction Time in the CMOT from 270 to 450 minutes, such as from 330 to 400 minutes, or 350 to 400 minutes.
  • the SAE 15W-30 lubricating oil composition also provides less than 20 mg total deposits, such as only 5 to 16 mg total deposits, in a Moderately High Temperature (MHT) Thermo-Oxidation Engine Test by ASTM D7097-09.
  • MHT Moderately High Temperature
  • the SAE 15W-30 lubricating oil composition additionally can provide excellent engine wear protection.
  • the SAE 15W-30 lubricating oil composition provides an average cam lobe wear in the Cummins ISB test less than 49 ⁇ , such as from 15 to 48 ⁇ or from 20 to 45 ⁇ .
  • the SAE 15W-30 lubricating oil composition provides an average cam and lifter wear in a Sequence DIG test less than 22 ⁇ , such as from 5 to 20 ⁇ .
  • the SAE 15W-30 lubricating oil composition provides a cam wear average in a Sequence IVA test less than 1 1 ⁇ , such as from 1 to 10 ⁇ .
  • the SAE 15W-30 lubricating oil provides superior shear stability. In one embodiment, the SAE 15W-30 lubricating oil composition provides a percent v scosity loss of the 30-cycle sheared oil (PVL30) of less than 0.80%, such as from 0.20 to 0.60%. In one embodiment, the SAE 15W-30 lubricating oil composition provides a percent viscosity loss of the 90-cyele sheared oil (PVL90) of less than 1.00%, such as from 0.20 to 0.80%.
  • the SAE 15W-30 lubricating oil composition provides a percent change in viscosity at 100°C in the KRL Shear Stability Test, performed according to CEC- L-45-99, less than 20%, such as from 6 to 16%.
  • Base oil blends were mixed to meet defined base oil blend viscosities and then engine oil additives were mixed into the base oil blends in proportions needed to give a sulfated ash of 0.65 to 1.00 wt%, a TBN from 7.5 to 9.5 mg KOH/g, a High- Temperature High-Shear (HTHS) from 3.5 to 4.0 mPa-s, and a kinematic viscosity at 100°C within the defined viscosity grades of SAE 10W-30, SAE 15W-30, or SAE
  • HTHS High- Temperature High-Shear
  • Ursa®, OLOA®, and PARATONE® are registered trademarks owned by Chevron Intellectual Property L.L.C.
  • Chevron 220R , Chevron 600R, and Chevron 1 lORLV are API Group II base oils from Chevron Corporation. Chevron 220R and Chevron 600R had viscosity indexes from 102 to 109. Chevron 110RLV had a viscosity index from 110 to 119.
  • the Detergent Inhibitor (DI) Additive Packages used were either used alone or with the addition of a TBN booster.
  • the TBN booster had a TBN from 50 to 62 mg KOH/g by ASTM D2896-11.
  • the TBN booster contributed the following to the lubricating oil composition: 0.5 wt% non-borated dispersant as described in U.S. Pat. No.
  • the TBN booster when used, was used in an amount to raise the TBN by about 1.0 base number by ASTM D2896-11, but it did not increase the sulfated ash above 1.00 in the lubricating oil composition. In this example the total amount of the TBN booster used was 1.744 wt%
  • the Detergent Inhibitor (DI) Additive Packages used in the base oil blends of this example were heavy duty diesel engine oil additives designed to meet or exceed the API Service Category CJ-4 in the SAE 15W-40 viscosity grade when blended with Group II base oils.
  • the Viscosity Modifiers that were used were Lubrizol® 7075F or PARATONE® 801 1, which are shear stable non-dispersant olefin copolymer viscosity modifiers.
  • the pour point depressant that was used was a polyalkylmethacrylate (PAMA), ViscoplexTM 1 -604, a trademarked pour point depressant from Degussa of Germany.
  • PAMA polyalkylmethacrylate
  • ViscoplexTM 1 -604 a trademarked pour point depressant from Degussa of Germany.
  • Example 1 The lubricating oil compositions described in Example 1 were tested in a number of oxidation tests as shown in Table 3. Where more than one result is shown, these are replicated tests.
  • TEOST and MHT are registered trademarks of the Tannas Co.
  • AMI Automobile Manufacturers' Association
  • BMW Group Daimler, DAF, Fiat, Ford of Europe, General Motors Europe, Hyundai Motor Europe, Iveco, Jaguar Land Rover, PSA Feli Citroen, Renault, Toyota Motor Europe, Volkswagen Group, Volvo Cars, Volvo Group.
  • the Coordinating European Council's CEC L-85-T-99 pressurized differential scanning calorimeter (PDSC) test was developed in Europe for the ACEA specifications for heavy duty diesel oils. This test differentiates between base oils and additives, and indicates synergies between antioxidants. The PDSC results can correlate with other oxidation tests.
  • Example 1 The lubricating oil compositions described in Example 1 were tested in two different shear stability tests. The percent viscosity losses obtained in these tests are shown in Table 4.
  • the KRL shear stability test was performed in a taper roller bearing rig, according to the CEC-L-45-99 test method that published May 28, 2014. All three lubricating oil compositions provided acceptable shear stability performance, but the SAE 15W-30 lubricating oil composition provided improved results in both shear stability tests.
  • Example 1 The lubricating oil compositions described in Example 1 were tested in three different engine tests, as shown in Table 4.

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Abstract

La présente invention concerne une huile de graissage SAE 15W-30 qui comporte : une huile de base du groupe II ayant une viscosité cinématique (KV) à 100 °C de 5,0 à 8,0 mm2/s ; une seconde huile de base du groupe II ayant une KV à 100 °C de 10 à 14 mm2/s ; un ensemble d'additifs DI conçu pour satisfaire aux exigences de la classe API CJ-4 ; 0,50 à 4,95 % en poids d'un modificateur de viscosité, l'huile de graissage ayant un indice de base (TBN) de 8,55 à 11,00 et fournissant un temps d'induction dans un CMOT de 270 à 450 minutes. L'invention concerne également un procédé de fabrication de l'huile de graissage qui comprend : le mélange des huiles de base du groupe II pour former un mélange d'huiles de base mélangées et l'ajout, audit mélange : d'un ensemble d'additifs DI conçu pour satisfaire aux exigences de la classe API CJ-4 et un modificateur de viscosité, l'huile de graissage ayant un indice de base (TBN) de 8,55 à 11,00 et fournissant un temps d'induction dans un CMOT de 270 à 450 minutes.
PCT/US2015/016264 2014-07-31 2015-02-18 Composition d'huile de graissage sae 15w-30 ayant une stabilité à l'oxydation améliorée Ceased WO2016018462A1 (fr)

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