WO2018192924A1 - Compositions lubrifiantes comprenant un additif réducteur de volatilité - Google Patents

Compositions lubrifiantes comprenant un additif réducteur de volatilité Download PDF

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Publication number
WO2018192924A1
WO2018192924A1 PCT/EP2018/059785 EP2018059785W WO2018192924A1 WO 2018192924 A1 WO2018192924 A1 WO 2018192924A1 EP 2018059785 W EP2018059785 W EP 2018059785W WO 2018192924 A1 WO2018192924 A1 WO 2018192924A1
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Prior art keywords
lubricating composition
base oil
volatility
astm
lubricating
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PCT/EP2018/059785
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English (en)
Inventor
Adam David MAYERNICK
Richard Thomas DIXON
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Shell Internationale Research Maatschappij B.V.
Shell Oil Company
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Publication date
Application filed by Shell Internationale Research Maatschappij B.V., Shell Oil Company filed Critical Shell Internationale Research Maatschappij B.V.
Priority to BR112019021840-8A priority Critical patent/BR112019021840B1/pt
Priority to CN201880025045.0A priority patent/CN110506098B/zh
Priority to RU2019135277A priority patent/RU2764982C2/ru
Priority to JP2019556181A priority patent/JP2020517762A/ja
Priority to EP18725751.4A priority patent/EP3612619B1/fr
Publication of WO2018192924A1 publication Critical patent/WO2018192924A1/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
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
    • C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the 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
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • 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
    • 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
    • C10M139/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing atoms of elements not provided for in groups C10M127/00 - C10M137/00
    • C10M139/04—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing atoms of elements not provided for in groups C10M127/00 - C10M137/00 having a silicon-to-carbon bond, e.g. silanes
    • 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
    • C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
    • C10M159/12—Reaction products
    • C10M159/18—Complexes with metals
    • 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
    • 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
    • C10M2203/003—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions 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
    • C10M2205/17—Fisher Tropsch reaction products
    • C10M2205/173—Fisher Tropsch reaction products 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary 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
    • C10M2215/02—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
    • C10M2215/02—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
    • C10M2215/065—Phenyl-Naphthyl 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
    • C10M2215/28—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
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
    • C10M2219/066—Thiocarbamic type compounds
    • C10M2219/068—Thiocarbamate metal 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
    • 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
    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
    • C10M2227/066—Organic compounds derived from inorganic acids or metal salts derived from Mo or W
    • 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
    • C10N2030/06—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
    • C10N2030/74—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

Definitions

  • the present invention relates to lubricating compositions comprising a base oil and a volatility reducing additive for particular use in the crankcase of an internal combustion engine, in particular an internal combustion engine used in a passenger vehicle or light duty van.
  • crankcase engine oils In practice, various lubricating compositions for crankcase engines are known.
  • a disadvantage of low viscosity crankcase engine oils is that they they may have undesirably high volatility, in particular as measured by the ASTM D5800B NOACK volatility test.
  • WO2010020653 discloses the use of Fischer- Tropsch base oils in lubricating compositions.
  • the composition of Example 1 of WO2010020653 shows a surprisingly low NOACK volatility when compared to the composition of Comparative Example 1 (using a Group III mineral base oil).
  • a lubricating composition comprising:
  • the lubricating composition has a kinematic viscosity at 100°C (according to ASTM D445) of 16.3 mm 2 /s or less, a low temperature cranking viscosity of at most 6200cP at -35°C (ASTM D5293) and a NOACK volatility of at most 15.0% according to ASTM D5800B.
  • a volatility reducing additive for reducing the NOACK volatility of a lubricating composition in particular wherein the lubricating composition comprises a Fischer-Tropsch base oil.
  • the base oil used in the present invention may conveniently comprise mixtures of one or more mineral oils and/or one or more synthetic oils; thus, according to the present invention, the term "base oil” may refer to a mixture containing more than one base oil.
  • Mineral oils include liquid petroleum oils and solvent-treated or acid-treated mineral lubricating oil of the paraffinic, naphthenic, or mixed paraffinic/naphthenic type which may be further refined by hydrofinishing processes and/or dewaxing.
  • Suitable base oils for use in the lubricating oil composition of the present invention are Group III mineral base oils, Group IV poly-alpha olefins (PAOs), Group III Fischer-Tropsch derived base oils and mixtures thereof.
  • Group III and “Group IV” base oils in the present invention are meant lubricating oil base oils according to the definitions of American Petroleum Institute (API) for category III and IV. These API categories are defined in API Publication 1509, 15th Edition, Appendix E, April 2002.
  • Fischer-Tropsch derived base oils are known in the art.
  • Fischer- Tropsch derived is meant that a base oil is, or is derived from, a synthesis product of a Fischer-Tropsch process.
  • a Fischer-Tropsch derived base oil may also be referred to as a GTL (Gas-To-Liquids) base oil.
  • Suitable Fischer-Tropsch derived base oils that may be conveniently used as the base oil in the lubricating composition of the present invention are those as for example disclosed in EP 0776 959, EP 0 668 342, WO 97/21788, WO 00/15736, WO 00/14188, WO 00/14187, WO 00/14183, WO 00/14179, WO 00/08115, WO 99/41332, EP 1 029 029, WO 01/18156 and WO 01/57166.
  • Synthetic oils include hydrocarbon oils such as olefin oligomers (including polyalphaolefin base oils; PAOs), dibasic acid esters, polyol esters, polyalkylene glycols (PAGs), alkyl naphthalenes and dewaxed waxy isomerates.
  • hydrocarbon oils such as olefin oligomers (including polyalphaolefin base oils; PAOs), dibasic acid esters, polyol esters, polyalkylene glycols (PAGs), alkyl naphthalenes and dewaxed waxy isomerates.
  • Synthetic hydrocarbon base oils sold by the Shell Group under the designation "Shell XHVI" (trade mark) may be conveniently used.
  • Poly-alpha olefin base oils PAOs
  • Suitable poly-alpha olefin base oils that may be used in the lubricating compositions of the present invention may be derived from linear C 2 to C32, preferably C 6 to C1 ⁇ 2, alpha olefins.
  • Particularly preferred feedstocks for said poly-alpha olefins are 1-octene, 1-decene, 1-dodecene and 1-tetradecene.
  • the base oil as used in the lubricating composition according to the present invention comprises a Fischer-Tropsch derived base oil.
  • the base oil contains more than 50 wt. , preferably more than 60 wt. , more preferably more than 70 wt.%, even more preferably more than 80 wt.%, most preferably more than 90 wt.% Fischer-Tropsch derived base oil.
  • the total amount of base oil incorporated in the lubricating composition is preferably present in an amount in the range of from 60 to 99 wt.%, more preferably in an amount in the range of from 65 to 90 wt.%, and most preferably in an amount in the range of from 70 to 85 wt.%, with respect to the total weight of the lubricating composition.
  • the base oil (or base oil blend) preferably has a kinematic viscosity at 100°C of at least 3.0 cSt (according to ASTM D445), preferably between 3.0 and 4.0 cSt.
  • the lubricating composition of the present invention further comprises a volatility reducing additive.
  • volatility reducing additive pertains to any compound added into a lubricating composition at low levels (typically 1% or less) that confers a reduction in NOACK volatility.
  • suitable volatility reducing additives include, but are not necessarily limited to, an aminic anti-oxidant, molybdenum based friction modifier, and a combination thereof.
  • the volatility reducing additive may be present in the lubricating composition on its own or as part of an additive package.
  • the volatility reducing additive is preferably present in the lubricating composition in an amount in the range of from 0.5 wt.% to 5 wt.%, preferably 0.5 wt.% to 2 wt.%, with respect to the total weight of the lubricating composition.
  • the lubricating composition according to the present invention meets certain specific requirements for the low temperature cranking viscosity at -35°C, the kinematic viscosity at 100°C and the NOACK volatility.
  • the low temperature cranking viscosity at -35°C (according to ASTM D5293) of the lubricating composition is at most 6200cP.
  • the kinematic viscosity at 100°C (according to ASTM D445) of the lubricating composition is at most 16.3 cSt, preferably from 3.8 to 16.3 cSt, and more preferably from 3.8 to 9.3 cSt.
  • the high temperature, high shear viscosity (“HTHS”) (according to ASTM D4683) of the lubricating composition is in the range of from 1.7 to 3.7 mPa.s, preferably in the range of from 1.7 to 2.6 mPa.s.
  • the NOACK volatility (according to ASTM D5800B) of the lubricating composition is 15.0 wt or below, preferably 12.5 wt or below, even more preferably 10.0 wt. or below.
  • the lubricating compositions according to the present invention may optionally further comprise one or more additives such as anti-oxidants, anti-wear additives, dispersants, detergents, overbased detergents, extreme pressure additives, friction modifiers, viscosity index improvers, pour point depressants, metal passivators, corrosion inhibitors, demulsifiers, anti-foam agents, seal compatibility agents and additive diluent base oils, etc.
  • additives such as anti-oxidants, anti-wear additives, dispersants, detergents, overbased detergents, extreme pressure additives, friction modifiers, viscosity index improvers, pour point depressants, metal passivators, corrosion inhibitors, demulsifiers, anti-foam agents, seal compatibility agents and additive diluent base oils, etc.
  • Optional anti-oxidants that may be conveniently used in lubricant formulations include phenyl-naphthylamines (such as "IRGANOX L-06" available from Ciba Specialty Chemicals) and diphenylamines (such as "IRGANOX L-57” available from Ciba Specialty Chemicals) as e.g. disclosed in WO 2007/045629 and EP 1 058 720 Bl, phenolic anti-oxidants, etc. The teaching of WO 2007/045629 and EP 1 058 720 Bl is hereby incorporated by reference.
  • Anti-wear additives that may be conveniently used include zinc-containing compounds such as zinc dithiophosphate compounds selected from zinc dialkyl-, diaryl- and/or alkylaryl- dithiophosphates, molybdenum-containing compounds, boron-containing compounds and ashless anti-wear additives such as substituted or unsubstituted thiophosphoric acids, and salts thereof.
  • zinc-containing compounds such as zinc dithiophosphate compounds selected from zinc dialkyl-, diaryl- and/or alkylaryl- dithiophosphates
  • molybdenum-containing compounds such as zinc dithiophosphate compounds selected from zinc dialkyl-, diaryl- and/or alkylaryl- dithiophosphates
  • molybdenum-containing compounds such as zinc dithiophosphate compounds selected from zinc dialkyl-, diaryl- and/or alkylaryl- dithiophosphates
  • molybdenum-containing compounds such as zinc dithiophosphate compounds selected from zinc dialkyl-, diaryl
  • Boron-containing compounds that may be conveniently used include borate esters, borated fatty amines, borated epoxides, alkali metal (or mixed alkali metal or alkaline earth metal) borates and borated overbased metal salts.
  • the dispersant used is preferably an ashless dispersant.
  • ashless dispersants are polybutylene succinimide polyamines and Mannich base type dispersants.
  • the detergent used is preferably an overbased detergent or detergent mixture containing e.g. salicylate, sulphonate and/or phenate-type detergents.
  • viscosity index improvers which may conveniently be used in the lubricating composition of the present invention include the styrene -butadiene stellate copolymers, styrene-isoprene stellate copolymers and the polymethacrylate copolymer and ethylene-propylene copolymers. Dispersant-viscosity index improvers may be used in the lubricating composition of the present invention.
  • the lubricating composition contains at least 0.1 wt. of a pour point depressant.
  • a pour point depressant alkylated naphthalene and phenolic polymers, polymethacrylates, maleate/fumarate copolymer esters may be conveniently used as effective pour point depressants.
  • compounds such as alkenyl succinic acid or ester moieties thereof, benzotriazole-based compounds and thiodiazole -based compounds may be conveniently used in the lubricating compositions as corrosion inhibitors.
  • seal fix or seal compatibility agents include, for example, commercially available aromatic esters.
  • the lubricating compositions of the present invention may be conveniently prepared by admixing the volatility reducing additive, and any optional additives, with the base oil(s).
  • the above-mentioned additives are typically present in an amount in the range of from 0.01 to 35.0 wt.%, based on the total weight of the lubricating composition, preferably in an amount in the range of from 0.05 to 25.0 wt.%, more preferably from 1.0 to 20.0 wt.%, based on the total weight of the lubricating composition.
  • the lubricating composition contains from 10 wt.% to 15 wt.% of an additive package comprising a combination of additives including anti-oxidants, a zinc- based anti-wear additive, an ashless dispersant, an overbased detergent mixture, and a silicone -based anti-foaming agent.
  • an additive package comprising a combination of additives including anti-oxidants, a zinc- based anti-wear additive, an ashless dispersant, an overbased detergent mixture, and a silicone -based anti-foaming agent.
  • the present invention provides the use of a volatility reducing additive to lower NOACK volatility of a lubricating composition, in particular wherein the lubricating composition comprises a Fischer- Tropsch derived base oil.
  • the present invention provides a method of improving NOACK volatility properties, which method comprises lubricating the crankcase of an engine, in particular a passenger car motor engine, with a lubricating composition according to the present invention.
  • Table 2 indicates the composition and properties of the fully formulated engine oil formulations that were tested; the amounts of the components are given in wt. , based on the total weight of the fully formulated formulations.
  • All tested formulations contained a combination of a base oil and additive, wherein the base oil in each case was GTL 4.
  • Base oil 1 was a Fischer- Tropsch derived base oil (“GTL 4”) having a kinematic viscosity at 100°C (ASTM D445) of approx. 4 cSt (mmV 1 ).
  • GTL 4 Fischer- Tropsch derived base oil
  • ASTM D445 kinematic viscosity at 100°C
  • 4 cSt mmV 1
  • This base oil may be conveniently manufactured by the process described in e.g. WO-A-02/070631, the teaching of which is hereby incorporated by reference.
  • Additional A was a dispersant, Infineum C9280, which is commercially available from Infineum.
  • Additional B was an aminic antioxidant, Infineum C9452, which is commercially available from Infineum.
  • Additional C was a molybdenum based friction modifier, Infineum C9455, which is commercially available from Infineum.
  • compositions of Examples 1 to 3 and Comparative Example 1 and 2 were obtained by mixing the base oils with the additive, where present, using conventional lubricant blending procedures.
  • the results of NOACK volatility testing via ASTM D5800B are shown in Table 2.
  • Examples 1-3 which contain a volatility reducing additive, have significantly lower NOACK volatility values than Comparative Examples 1 and 2, which do not contain a volatility reducing additive. These results are particularly surprising because each additive included in the formulations shown for Examples 1-3 is comprised of a concentrate wherein the additive has been diluted in a base oil with NOACK volatility of greater than 12.5% as measured by ASTM D5800B, thus the expectation is that addition of the additives in Examples 1-3 will increase NOACK volatility rather than decrease it.
  • An important benefit of the present invention is that for future low viscosity engine oils such as OW-16 (as per SAE J300 table of engine oil viscosity grades) and lower viscosities (OW-12, OW-8, etc), stringent NOACK volatility requirements can be met with lesser or no need to use (relatively expensive) poly-alpha olefin (PAO) base oils.
  • PAO poly-alpha olefin
  • lubricant additive chemistries anti-wear, anti-oxidant, viscosity index improver, friction modifier, detergent, dispersant, pour point depressant, etc
  • any other chemical species that interacts strongly with the oil-air interface including but not limited to surfactants, functionalized polymers, ionic liquids, nanoparticles, etc.

Abstract

L'invention concerne une composition lubrifiante comprenant : (i) une huile de base ; et (ii) un additif réducteur de la volatilité. La composition présente une viscosité cinématique à 100 °C (conformément à la norme ASTM D445) inférieure ou égale à 16,3 mm2/s, une viscosité de démarrage à basse température d'au plus 6 200 cP à -35 °C (Norme ASTM D5293) et une volatilité de NOACK d'au plus 15 % conformément à la norme ASTM D5800B.
PCT/EP2018/059785 2017-04-19 2018-04-17 Compositions lubrifiantes comprenant un additif réducteur de volatilité WO2018192924A1 (fr)

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BR112019021840-8A BR112019021840B1 (pt) 2017-04-19 2018-04-17 Composições lubrificantes compreendendo um aditivo de redução de volatilidade
CN201880025045.0A CN110506098B (zh) 2017-04-19 2018-04-17 包含挥发性降低添加剂的润滑组合物
RU2019135277A RU2764982C2 (ru) 2017-04-19 2018-04-17 Смазочные композиции, содержащие присадку для уменьшения летучести
JP2019556181A JP2020517762A (ja) 2017-04-19 2018-04-17 揮発性低減添加剤を含む潤滑組成物
EP18725751.4A EP3612619B1 (fr) 2017-04-19 2018-04-17 Composition lubrifiante comprenant un additif à réduire la volatilité

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US15/491,043 US20180305633A1 (en) 2017-04-19 2017-04-19 Lubricating compositions comprising a volatility reducing additive
US15/491,043 2017-04-19

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WO (1) WO2018192924A1 (fr)

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RU2764982C2 (ru) 2022-01-24
BR112019021840A2 (pt) 2020-05-19
JP2020517762A (ja) 2020-06-18
RU2019135277A (ru) 2021-05-05
EP3612619A1 (fr) 2020-02-26
CN110506098B (zh) 2022-04-26
CN110506098A (zh) 2019-11-26
RU2019135277A3 (fr) 2021-07-14
US20180305633A1 (en) 2018-10-25
EP3612619B1 (fr) 2021-11-24

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