EP2186872A1 - Lubricating composition - Google Patents

Lubricating composition Download PDF

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Publication number
EP2186872A1
EP2186872A1 EP09179389A EP09179389A EP2186872A1 EP 2186872 A1 EP2186872 A1 EP 2186872A1 EP 09179389 A EP09179389 A EP 09179389A EP 09179389 A EP09179389 A EP 09179389A EP 2186872 A1 EP2186872 A1 EP 2186872A1
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EP
European Patent Office
Prior art keywords
base oil
lubricating composition
group
fischer
present
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP09179389A
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German (de)
English (en)
French (fr)
Inventor
David Colbourne
Keith Selby
Noriaki Shinoda
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.)
Shell Internationale Research Maatschappij BV
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Shell Internationale Research Maatschappij BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to EP09179389A priority Critical patent/EP2186872A1/en
Publication of EP2186872A1 publication Critical patent/EP2186872A1/en
Priority to JP2012543769A priority patent/JP5718358B2/ja
Priority to PCT/EP2010/069974 priority patent/WO2011073349A1/en
Withdrawn legal-status Critical Current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
    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic 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
    • 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
    • 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
    • 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
    • C10N2030/36—Seal compatibility, e.g. with rubber
    • 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
    • C10N2030/42—Phosphor free or low phosphor content 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
    • 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
    • C10N2030/43—Sulfur free or low sulfur content 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
    • 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
    • C10N2030/68—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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel 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
    • C10N2040/252—Diesel engines
    • C10N2040/253—Small diesel engines

Definitions

  • the present invention relates to a lubricating composition
  • a lubricating composition comprising a Fischer-Tropsch derived base oil and one or more additives for particular use in the crankcase of an internal combustion engine, in particular a diesel engine such as a heavy duty diesel engine.
  • Lubricating compositions comprising a Fischer-Tropsch derived base oil and one or more additives are known in the art.
  • WO 2008/055975 discloses a so-called low-SAPS lubricating composition comprising a Fischer-Tropsch derived base oil and having a sulphur content of from 0.01 to 0.3 wt.%, a phosphorus content of form 0.01 to 0.1 wt.% and a sulphated ash content of from 0.1 to 1.2 wt.%, based on the total weight of the lubricating composition.
  • SAE 5W-40 lubricating compositions are disclosed, comprising either a mixture of Fischer-Tropsch derived base oils or a mixture of Group III base oils.
  • a lubricating composition comprising a base oil and one or more additives, wherein the base oil comprises at least:
  • WO 2006/003119 discloses the use of Fischer-Tropsch derived base oils for improving seal swelling properties, in particular in crankcase gear oil applications and hydraulic fluids.
  • WO 2006/003119 does not teach a lubricating composition containing additives and a combination of a Fischer-Tropsch derived base oil and a mineral derived base oil selected from a Group I and Group II base oil, and a mixture thereof, let alone for improving seal compatibility properties other than average volume and hardness in the NBR nitrile rubber seal swell test as measured by BS903:Part A16:1987/ISO 1817-1985 (see Table 2 on page 27 of WO 2006/003119 ).
  • the base oil used in the lubricating composition according to the present invention comprises at least a Fischer-Tropsch derived base oil and a mineral derived base oil selected from a Group I and Group II base oil, and a mixture thereof
  • various conventional mineral oils, synthetic oils as well as naturally derived esters such as vegetable oils may be conveniently used.
  • the base oil used in the present invention may - in addition to the Fischer-Tropsch derived base oil and mineral derived Group I and/or Group II base oil - 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, including at least one Fischer-Tropsch derived base oil and one mineral derived Group I and/or Group II 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 I-III mineral base oils, Group IV poly-alpha olefins (PAOs), Group III Fischer-Tropsch derived base oils and mixtures thereof.
  • Group I", Group II", “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 I and II. These API categories are defined in API Publication 1509, 15th Edition, Appendix E, April 2002.
  • a mineral derived Group I base oil typically has a Viscosity Index in the range from 95 to 105 and typically contains less than 90 wt.% saturates (according to ASTM D 2007) and at least 0.03 wt.% sulphur (according to ASTM D 1552).
  • a mineral derived Group II base oil typically contains more than 90 wt.% saturates (according to ASTM D 2007) and at most 0.03 wt.% sulphur (according to ASTM D 1552).
  • 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 0 776 959 , 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
  • Preferred 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 C 32 , preferably C 6 to C 16 , alpha olefins.
  • Particularly preferred feedstocks for said poly-alpha olefins are 1-octene, 1-decene, 1-dodecene and 1-tetradecene.
  • a Fischer-Tropsch derived base oil over a (Group IV) PAO base oil, in view of the high cost of manufacture of the PAOs.
  • a PAO base oil preferably, not more than 5 wt.%, preferably not more than 2 wt.%, of the base oil is a PAO base oil. It is even more preferred that no PAO base oil is present.
  • the total amount of base oil incorporated in the lubricating composition of the present invention 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.%, based on the total weight of the lubricating composition.
  • the mineral derived base oil a Group I base oil is used. If present, the mineral derived Group II base oil is present in an amount of 0.1 - 80 wt.%, preferably in an amount below 60 wt.%, based on the total weight of the lubricating composition.
  • the composition comprises from 30.0 to 80.0 wt.%, preferably from 40.0 to 60.0 wt.% of the mineral derived Group I base oil, based on the total weight of the composition. Also it is preferred that the composition comprises from 10.0 to 40.0 wt.%, preferably from 15.0 to 35.0 wt.%, of a Fischer-Tropsch derived base oil, based on the total weight of the lubricating composition.
  • the Fischer-Tropsch derived base oil has a kinematic viscosity at 100°C (according to ASTM D 445) of between 2.0 and 9.0 cSt, preferably between 2.5 and 5.5 cSt.
  • the lubricating composition according to the present invention meets the so-called SAE J300 Specifications (as revised in January 2009), preferably xW-y formulations wherein x represents 10 or 15 and y represents 30 or 40.
  • SAE stands for Society of Automotive Engineers. There is special preference for 15W-40, 10W-30 and 10W40 crankcase engine oils, and in particular 15W40.
  • the composition has a dynamic viscosity at -20°C (according to ASTM D 5293) of below 7000 cP (1 cP is the same as 1 mPa.s).
  • the dynamic viscosity at - 20°C of the composition is between 3000 and 7000 cP.
  • the composition has a kinematic viscosity at 100°C (according to ASTM D 445) of at least 5.6 cSt, prefereably at least 9.3 cSt, more preferably at least 12.5 cSt.
  • the kinematic viscosity at 100°C of the composition is between 5.6 and 26.1 cSt, preferably below 16.3.
  • the composition has a high temperature, high shear viscosity ("HTHS"; according to ASTM D 4683) of at least 2.9 cP, preferably 3.5 cP.
  • HTHS high temperature, high shear viscosity
  • ASTM D 4683 high shear viscosity
  • the HTHS of the composition is between 2.9 and 4.5 cP.
  • the Noack volatility (according to ASTM D 5800) of the composition is between 1 and 18.0 wt.%, preferably below 15.0 wt.%, more preferably below 13.0 wt.%.
  • the lubricating composition according to the present invention further comprises 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.
  • the lubricating compositions of the present invention may be conveniently prepared by admixing the one or more 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 according to the present invention comprises at least 1.0 wt.%, preferably at least 2.5 wt.%, of a detergent and/or dispersant, based on the total weight of the lubricating composition.
  • the composition contains at least 9.0 wt.%, preferably at least 10.0 wt.%, more preferably at least 11.0 wt% of an additive package comprising an anti-wear additive, a metal detergent, an ashless dispersant and an anti-oxidant.
  • SAPS sulphated ash, phosphorus and sulphur
  • mid SAPS sulphated ash, phosphorus and sulphur
  • regular SAPS regular SAPS
  • PCMO Passenger Car Motor Oil
  • lubricating compositions according to the present invention are low SAPS Duty Diesel Engine Oils.
  • the lubricating composition according to the present invention may meet the above SAPS ranges for engine oils, even if the lubricating composition is intended for a different application.
  • the present invention provides the use of the lubricating composition according to the present invention in order to improve one or more of the following properties:
  • the present invention provides the use of a Fischer-Tropsch derived base oil as defined in the present invention in order to improve one or more of the following properties:
  • the present invention is not limited to a certain type of lubricant, the present invention is of special use as an engine oil in internal combustion engines and more in particular compression ignition engines for transportation and other means of energy generation.
  • Compression ignition engines, or “diesel engines” feature among the main type of engines employed for passenger cars in Europe, and globally for heavy-duty applications, as well as for stationary power generation as a result of their high efficiency.
  • a diesel engine is an internal combustion engine; more specifically, it is a compression ignition engine, in which the fuel/air mixture is ignited by being compressed until it ignites due to the temperature increase due to compression, rather than by a separate source of ignition, such as a spark plug, as is the case of gasoline engines.
  • Table 1 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 engine oil formulations contained a combination of a base oil, an additive package, and a viscosity modifier, which additive package was the same in all tested compositions.
  • the additive package contained a combination of additives including anti-oxidants, a zinc-based anti-wear additives, an ashless dispersant, more than 1.0 wt.% of an overbased detergent mixture, about 0.2 wt.% of a pour point depressant and about 30 ppm of an anti-foaming agent.
  • a conventional viscosity modifier concentrate was used to adjust the viscosities.
  • 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 (mm 2 s -1 ).
  • This GTL 4 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.
  • Base oil 2 was mineral derived Group I base oils having a kinematic viscosity at 100°C (ASTM D445) of approx. 5 cSt (mm 2 s -1 ), 8 cSt and 11 cSt, respectively, commercially available from e.g. Shell Base Oils under the trade designations "HVI 60", “HVI 105" and "HVI 160S”.
  • Base oil 5" and “Base Oil 6” were mineral derived Group II base oils having a kinematic viscosity at 100°C (ASTM D445) of approx. 6 cSt (mm 2 s -1 ) and 12 cSt, respectively, commercially available from e.g. Motiva LLC (Port Arthur, Texas, USA) under the trade designations "Star 6" and "Star 12".
  • compositions of Examples 1-4 and Comparative Examples 1 and 2 were obtained by mixing the base oils with the additive package and viscosity modifier using conventional lubricant blending procedures.
  • the compositions of Examples 1-4 and Comparative Examples 1 and 2 meet the requirements of a 15W-40 formulation according to SAE J300.
  • Base oil 1 (GTL) 30.0 20.0 30.0 20.0 - - Base oil 2 (Group I) - - - - 32.2 - Base oil 3 (Group I) - 58.8 - - 46.6 - Base oil 4 (Group I) 48.8 - - - - - - Base oil 5 (Group II) - - 5.5 29.4 - 78.8 Base oil 6 (Group II) - - 43.3 29.4 - Additive package 14.2 14.2 14.2 14.2 14.2 14.2 14.2 Viscosity Modifier 7.0 7.0 7.0 7.0 TOTAL 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
  • Carbon black (Vulcan XC72R, available from Cabot (Leuven, Belgium) was preheated in an oven at 140°C for at least 12 hours. 1.25 g of the carbon black and 25 g of oil sample were measured in a 150 ml bottle (corresponding to 4.76 wt.% of carbon black). Then, a stirrer bar was added in the bottle and the bottle was closed with a lid. The bottle was placed on a heated stirrer block (at 100°C) to equilibrate overnight.
  • Example 2 Comp. Ex 1 0.146 0.6061 1.254 3.096 0.228 0.5163 0.9629 2.321 0.362 0.3834 0.716 1.583 0.572 0.2846 0.519 1.009 0.924 0.2164 0.3815 0.6614 1.456 0.1742 0.2702 0.4590 2.313 0.1295 0.1837 0.3058 3.668 0.09225 0.1226 0.1867 5.813 0.06678 0.08512 0.1254 9.208 0.05126 0.06206 0.0880 14.60 0.04190 0.04844 0.06527 23.14 0.03521 0.03923 0.05054 36.67 0.03045 0.03306 0.04103 58.13 0.02749 0.02899 0.03445 92.11 0.02494 0.02589 0.03005 146.0 0.02297 0.02360 0.02679 231.4 0.02164 0.02197 0.02443
  • Comparative Example 1 (containing mineral derived Group I base oils) did not pass the tensile strength part of the AK6 test (-52.3%; beyond the limit of -50% min), whilst Examples 1 and 2 (containing a combination of Fischer-Tropsch derived base oil and mineral Group I base oil) did pass.
  • the tensile strength gives a good impression of the extent to which the mechanical properties of a test specimen change upon contact with lubricant; a large % means better results.
  • Examples 1 and 2 exceeded Comparative Example 1 significantly in the NBR34 test with respect to volume change (2.0 and 2.5 versus 3.4) and tensile strength (2.8 and 0.4 versus -3.6); in the ACM E7503 test with respect to volume change (1.5 and 2.5 versus 3.4) and tensile strength (3.5 and 2.8 versus - 1.4); and in the EAM D8948-200 test with respect to hardness (2 and 0 versus -3) and volume change (2.9 and 6.1 versus 10.3). Seal swell or shrinkage can have an effect on the sealing performance; a minimal change in volume upon contact with lubricant is desired to ensure the seal gives the fit for which it is designed.
  • Examples 3 and 4 exceeded Comparative Example 2 (containing mineral derived Group II base oil) significantly in the ACM E7503 test with respect to volume change (1.7 and 1.8 versus 2.4) and in the EAM D8948-200 test with respect to hardness (5 and 4 versus 2) and volume change (0.8 and 1.8 versus 4.8).
  • the lubricating compositions according to the present invention also exhibited good dispersancy properties.
  • Table 3 and Figure 1 show that Example 1 and 2 perform better than Comp. Ex. 1, whilst there is a preference for Example 1 in respect of dispersancy properties.
  • the lubricating compositions according to the present invention further exhibited improved low T pumpability properties (as evidenced by high reduction rates).

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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)
EP09179389A 2009-12-16 2009-12-16 Lubricating composition Withdrawn EP2186872A1 (en)

Priority Applications (3)

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EP09179389A EP2186872A1 (en) 2009-12-16 2009-12-16 Lubricating composition
JP2012543769A JP5718358B2 (ja) 2009-12-16 2010-12-16 潤滑組成物
PCT/EP2010/069974 WO2011073349A1 (en) 2009-12-16 2010-12-16 Lubricating composition

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013189951A1 (en) * 2012-06-21 2013-12-27 Shell Internationale Research Maatschappij B.V. Lubricating composition
WO2017191215A1 (fr) * 2016-05-04 2017-11-09 Total Marketing Services Composition hydraulique grand froid

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5912971B2 (ja) 2012-07-30 2016-04-27 昭和シェル石油株式会社 内燃機関用潤滑油組成物
US11499117B2 (en) * 2018-07-13 2022-11-15 Shell Usa, Inc. Lubricating composition

Citations (6)

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US20030100453A1 (en) * 2001-09-27 2003-05-29 O'rear Dennis J. Lube base oils with improved stability
US20040094453A1 (en) * 2002-11-20 2004-05-20 Lok Brent K. Blending of low viscosity fischer-tropsch base oils with conventional base oils to produce high quality lubricating base oils
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