EP2352808A1 - Lubricant compositions - Google Patents

Lubricant compositions

Info

Publication number
EP2352808A1
EP2352808A1 EP09736563A EP09736563A EP2352808A1 EP 2352808 A1 EP2352808 A1 EP 2352808A1 EP 09736563 A EP09736563 A EP 09736563A EP 09736563 A EP09736563 A EP 09736563A EP 2352808 A1 EP2352808 A1 EP 2352808A1
Authority
EP
European Patent Office
Prior art keywords
lubricant
present
lubricant compositions
viscosity
pao
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.)
Withdrawn
Application number
EP09736563A
Other languages
German (de)
English (en)
French (fr)
Inventor
Michael T. Costello
Mark Witschger
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.)
Cognis IP Management GmbH
Original Assignee
Cognis IP Management GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cognis IP Management GmbH filed Critical Cognis IP Management GmbH
Publication of EP2352808A1 publication Critical patent/EP2352808A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/042—Mixtures of base-materials and additives the additives being compounds of unknown or incompletely defined constitution 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
    • 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
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/047—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/36—Esters of polycarboxylic acids
    • 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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers 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
    • 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
    • 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
    • C10M2205/003—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation 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
    • C10M2205/02—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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers 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
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/2805—Esters used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids 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
    • 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
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • 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
    • C10N2030/08—Resistance to extreme temperature
    • 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
    • C10N2030/54—Fuel economy
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/68—Shear stability
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives

Definitions

  • This invention relates to lubricant compositions having utility in numerous applications, including particularly in connection with gear, transmission and/or axle applications in the automotive and machinery industries.
  • the present invention is directed to lubricant compositions having particular advantage as axle fluids and more particularly heavy duty axle fluids.
  • lubricant compositions and in particular gear and axle lubricant fluids, is to provide a high degree of reliability and durability in the service life of equipment in which it is installed.
  • the ability of such lubricants to aid in the overall fuel economy of the vehicles in which they are used has become an increasingly important factor in the selection of gear and axle lubricants.
  • Applicants have come to appreciate that by improving the axle efficiency, particularly in heavy duty applications such as Class 8 line haul trucks or vocational vehicles, the fuel efficiency of the vehicles can be improved.
  • a commercially successful axle lubricant will frequently be required to possess a high degree of oxidative stability, compatibility, shear stability, corrosion avoidance or resistance, wear protection, shiftability, and extended drain. These properties represent a difficult to achieve set of performance criteria that is made all the more difficult to achieve if the added requirement of enhancing fuel efficiency is present.
  • lubricant composition is used in its broadest sense to include fluid compositions that are used in applications involving metal to metal contact of parts in which at least one function of the fluid is to inhibit or reduce friction between the parts.
  • lubricant composition includes gear oils, axle oils and the like.
  • the lubricant compositions of the present invention comprise: (a) basestock;(b) viscosity improver; and (c) at least one additive to inhibit and preferably substantially prevent one or more of wearing, scuffing, micropitting and combinations of these and other deleterious effects.
  • the lubricant compositions of the present invention comprise: (a) basestock comprising polyalphaolefin (hereinafter referred to as "PAO"), preferably relatively low viscosity PAO, and even more preferably a PAO having a viscosity of not greater than about 12 centistokes (cSt) and optionally an ester oil; (b) viscosity improver comprising at least one relatively high viscosity PAO-type viscosity improver, preferably having a viscosity of greater than about 40 centistokes (cSt), and even more preferably from about 40 to about 1000 cSt; and (c) a performance additive package comprising at least one additive effective to improve at least one property of the lubricant and/or the performance of the equipment in which the lubricant is to be used.
  • PAO polyalphaolefin
  • the performance additive comprises at least one additive based on sulfur chemistry and at least one additive based on phosphorous chemistry.
  • preferred lubricant compositions of the present invention exhibit and/or produce one or more, and preferably all, of the following advantageous properties: reduction of viscous drag over the application temperature range; film thickness reduction; and churning loss reduction.
  • the present lubricant compositions exhibit a horsepower (HP) loss reduction, as described and measured in connection with the examples hereof, of at least about 3%, more preferably at least about 4%, and even more preferably at least about 5%.
  • HP horsepower
  • the present lubricant compositions exhibit a sump temperature reduction, as described and measured in connection with the examples hereof, of at least about 2%, more preferably at least about 5%, and even more preferably at least about 7%.
  • the present invention provides also methods of making and using a fully formulated lubricant, including a fully formulated heavy duty axle fluid, and to axle, gear, transmission or drive systems containing such oils.
  • the present invention is directed in one aspect to lubricant compositions comprising at least one base stock, at least one viscosity enhancer for the base stock, and at least one additive.
  • these components of the present invention may be present compositions in widely varying amounts depending on the particular needs of each application, and all such variations are considered to be within the broad scope of the invention. Nevertheless, applicants have found that in certain preferred embodiments the present lubricant compositions are formulated according to the following preferred ranges of components, it being understood that all percentage values indicated in the following Table 1 are modified by the word "about:" TABLE 1
  • the base stock comprises at least one relatively low viscosity PAO and at least one adipate ester. While it is contemplated that a large range of relative concentrations of such components may be present, in general it is preferred that the base stock of the present invention comprise in certain embodiments a PAO:ester weight ratio of from about 0.5 to about 12:1, and more preferably of from about 0.5 to about 12:1.
  • the viscosity improver comprise a high viscosity PAO (hereinafter HVPAO) and an additional additive selected from the group consisting of PIB (polyisobutylene), PMA (polymethacrylate), or OCP (olefin co-polymer), and combinations of two or more of these. While it is contemplated that a large range of relative concentrations of such components may be present, in general it is preferred that the viscosity enhancer of the present invention comprise in certain embodiments a additional additive:MN/PAO weight ratio of from about 0 to about 4: 1 , and more preferably of from about 0.2 to about 4: 1.
  • the present lubricant compositions are formulated according to the following preferred ranges of components, it being understood that all percentage values indicated in the following Table 2 are modified by the word "about:"
  • the PAO component is a PAO having a viscosity of from about 4 to about 12 cSt.
  • the PAO is selected from group consisting of PAOs having a viscosity of 4, 6, 8, 10, 12 or combinations of two or more of these.
  • the PAO used in connection with the base stock component of the present invention is comprised are oligimeric compounds having from 2 to about 3 units, preferably units of 1-decene.
  • the PAO component of the viscosity enhancer comprises, and preferably in certain embodiments consists essentially of a PAO having a viscosity of from about 40 to about 1000 cSt, and even more preferably from about 40 to about 1000 cSt.
  • the PAO component of the viscosity enhancer component is comprised of polymeric compounds having greater than about 50 units, more preferably having greater than from 75 units and even more preferably having greater than from 100 units, preferably units of 1-decene.
  • the adipate ester comprises a decyl adipate, and even more particularly of one or more adipate esters selected from the group consisting of di-isodecyl adipate, di-isodecyl azelate, and di-tridecyl adipate.
  • the present lubricant compositions are formulated in accordance with Tables 3 or 4 below, it being understood that the amounts are weight percentages and the each value is understood to be preceded by the word "about:"
  • the average horsepower loss is one measure that can be used to represent the performance of a lubricant composition, particularly an axle or gear oil, with respect to the fuel economy impact on the vehicle in which it will be used.
  • AHPL average horsepower loss
  • testing protocol is used in which a commercial axle is attached to a dynamometer which measures the input the output torque on the axle. This test is run for comparison purposes with several commercially available lubricants and also with two formulations in accordance with the preferred embodiments of the present invention.
  • the lubricant composition in accordance with the present invention labeled E2 exhibited a 5.4% relative improvement in energy efficiency compared to the average established for EMGARD 2896.
  • the formulation designated as E2 in Table 5 above consisted essentially of (CAS # 770-1 1-11) di-isodecyl adipate (5%), PAO 8 (56.6%), PAO 100 (28%), Angamol 6004J (10%), Hitec 5739 (0.3%), E-9817U (0.1%), with all amounts being reported on the basis of weight percent.
  • the lubricant composition in accordance with the present invention labeled E3 exhibited a 3.7% relative improvement in energy efficiency compared to the average established for EMGARD 2896.
  • the formulation designated as E3 in Table 5 above consisted essentially of (CAS # 770- 39-1) di-isodecyl adipate (5%), PAO 8 (56.6%), PAO 100 (13%), Indopol H-1500 SPA (13%), Angamol 6004J (10%), Hitec 5739 (0.3%), E-9817U (0.1%), with all amounts being reported on the basis of weight percent.
  • the lubricant composition in accordance with the present invention labeled E4 exhibited a 4.3% relative improvement in energy efficiency compared to the average established for EMGARD 2896.
  • the formulation designated as E4 in Table 5 consisted essentially of (CAS # 770-42-1) di-isodecyl adipate (5%), PAO 8 (51.6%), PAO 100 (33%), Angamol 6004J (10%), Hitec 5739 (0.3%), and E-9817U (0.1%), with all amounts being reported on the basis of weight percent.
  • the frictional properties of a lubricant composition are in general considered to be highly relevant to the ability of lubricant compositions to exhibit superior performance in the environment of use.
  • Several tests are performed for the purpose of obtaining information regarding the relative performance of certain preferred lubricants in accordance with the present invention relative to several commercially available lubricants.
  • the results of the test done for comparison purposes in connection with the commercially available products are identified under column headings Emgard 4209, Emgard 2986, Comp Q and Comp S in the Table 1 1, attached hereto.
  • the results of this test in accordance with the present invention are based on the same formulation reported in Table 5 as El and E2, but labeled in Table 1 1 with row headings Cognis #2 and Cognis #3, respectively
  • One method of testing the frictional properties of lubricant is to utilize a 19.05mm (3/4 inch) steel ball and 46 mm diameter steel desk.
  • the ball is loaded against the face of the disc and the ball and the disc are driven independently to create a mixed rolling/sliding contact.
  • the force between the ball and disk is measured by a force transducer. Additional sensors measure the applied load, the lubricant temperature and (optionally) electrical contact resistance between specimens and the relative wear between them.
  • a schematic diagram of such a test apparatus is provided below.
  • Such an apparatus is used to test lubricant compositions in accordance with the present invention, using a film thickness of one to 1000 nm (+1-1 nm), speeds of 0.010 - 1.0 m/s, loads of 100 N, a slide/roll ratio (SSR) of 50%, contact pressures of approximately 3.0 to GPa, a temperature range of from 40 to 100 C, a power supply of from 100 to about 240 V, a total weight of 50 kg and dimensions (Wx HxD) of 50X50X30 cm.
  • SSR slide/roll ratio
  • One method of testing the traction properties of a lubricant composition is to measure the thickness and traction properties of elastohydrodynamic lubricant (EHL) films utilizing an apparatus to having at least one bowl or roller loaded against the internal diameter of a transparent ring having a larger radius then the bowl or roller.
  • the lubricant to be tested is placed between the rotating roller and arraying thereby forming an EHL film where the ball and arraying contact.
  • Roller and arraying rotating speeds are controlled to obtain different amounts of relative sliding motion between the respective surfaces.
  • Contact between the surfaces and the resultant film are observed by way of a transparent ring which allows optical measurements of lubricating film thickness. Traction forces generated during contact are also measured.
  • a schematic diagram of such a test apparatus is provided below.
  • Such an apparatus is used to test lubricant compositions in accordance with the present invention, using a film thickness of one to 1000 nm (+/-1 nm), speeds of 0.010 - 3.5 m/s, loads of 1 to 50 N, a slide/roll ratio (SSR) of 50%, contact pressures of approximately 3.0 to GPa, a temperature range of from 40 to 100 C, a power supply of from 100 to about 240 V, a total weight of 50 kg and dimensions (Wx HxD) of 50X50X30 cm.
  • SSR slide/roll ratio
  • lubricant compositions which is considered to be important in at least in certain applications is the compatibility of the lubricant with nonmetal parts in the system and environment of use, especially including seals, gaskets and the like.
  • Several tests are performed for the purpose of obtaining information regarding the relative performance of certain preferred lubricants in accordance with the present invention relative to several commercially available lubricants in connection with seal compatibility.
  • the results of the test done for comparison purposes in connection with the commercially available products are identified under column headings Emgard 4209, Emgard 2986, Comp Q and Comp S in Table 13 and the associated graph attached hereto.
  • the results of the tests performed in connection with two lubricant compositions of the present invention are based on the same formulation reported in Table 5 as El and E2, but labeled in Table 13 with row headings Cognis #2 and Cognis #3, respectively.
  • Emgard 4209 Emgard 2986 Cognis #2 Cognis #3 CompQ CompS
  • Emgard 4209 Emgard 2986 Cognis #2 Cognis #3 Comp Q Comp S
  • Emgard 4209 Emgard 2986 Cognis #2 Cognis #3 Comp Q Comp S

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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)
  • Rolling Contact Bearings (AREA)
EP09736563A 2008-09-25 2009-09-16 Lubricant compositions Withdrawn EP2352808A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10025508P 2008-09-25 2008-09-25
PCT/EP2009/006681 WO2010034422A1 (en) 2008-09-25 2009-09-16 Lubricant compositions

Publications (1)

Publication Number Publication Date
EP2352808A1 true EP2352808A1 (en) 2011-08-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09736563A Withdrawn EP2352808A1 (en) 2008-09-25 2009-09-16 Lubricant compositions

Country Status (8)

Country Link
US (2) US20110237478A1 (ja)
EP (1) EP2352808A1 (ja)
JP (1) JP2012503685A (ja)
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CA2738402A1 (en) 2010-04-01
BRPI0919037A2 (pt) 2015-12-08
US20110237478A1 (en) 2011-09-29
WO2010034422A1 (en) 2010-04-01
AU2009296592A1 (en) 2010-04-01
US20140296118A1 (en) 2014-10-02
JP2012503685A (ja) 2012-02-09

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