EP1814969A2 - Multifunktionelle schmiermittelzusatzzusammensetzung - Google Patents

Multifunktionelle schmiermittelzusatzzusammensetzung

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Publication number
EP1814969A2
EP1814969A2 EP05858295A EP05858295A EP1814969A2 EP 1814969 A2 EP1814969 A2 EP 1814969A2 EP 05858295 A EP05858295 A EP 05858295A EP 05858295 A EP05858295 A EP 05858295A EP 1814969 A2 EP1814969 A2 EP 1814969A2
Authority
EP
European Patent Office
Prior art keywords
lubricant
compound
integer
total amount
amount
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Withdrawn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
EP05858295A
Other languages
English (en)
French (fr)
Inventor
Hongmei Wen
Clark V. Cooper
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.)
RTX Corp
Original Assignee
United Technologies Corp
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Filing date
Publication date
Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of EP1814969A2 publication Critical patent/EP1814969A2/de
Withdrawn legal-status Critical Current

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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
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • 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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68—Esters
    • C10M129/76—Esters containing free hydroxy or carboxyl 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
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • 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
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/08—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic sulfur-, selenium- or tellurium-containing compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C10M2207/289—Partial esters containing free hydroxy 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
    • 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
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/041—Triaryl phosphates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/049—Phosphite
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/02—Bearings
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/12—Gas-turbines
    • C10N2040/13—Aircraft turbines
    • 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 a multifunctional lubricant additive composition or package for improving the performance characteristics of a lubricant. More particularly, the present invention relates to a multifunctional lubricant additive composition or package for providing a lubricant with superior performance characteristics such as improved load-carrying ability, anti-scuffing (anti-scoring) capacity, friction reduction, and improved surface- fatigue life.
  • Mechanical systems such as manual or automatic transmissions; single and multi-speed aviation transmissions, including but not limited to those used to propel rotorcraft and those used to alter the rotational speed of the sections within gas turbine engines; push-belt type continuous variable transmissions; and traction drive continuous variable transmissions, have large surface areas of contact portions or zones. These contact portions or zones, such as drive rolling surfaces, and gear and ball-and roller bearings, are known to be susceptible to high surface pressures.
  • internal combustion engines and other propulsion devices especially those that are common for high-performance and racing applications, are subject to taxing demands in the form of inertial loading, high sliding and/or rolling speeds, and marginal lubrication.
  • the need for reducing friction, resistance, and fatigue within larger contact zones of mechanical systems is increased by many recently developed transmission systems that are designed to be miniaturized or weight-reduced to maximize transmission throughput capacity.
  • lubricants especially those containing specific additives, play a critical role in protecting and minimizing the wear and scuffing (scoring) of surfaces.
  • the lubricants generally reduce principal damage accumulation mechanisms of lubricated components caused by surface fatigue and overloading. Examples of known lubricants are discussed in the following publications, which are hereby incorporated in full by reference: Phillips, W. D., Ashless phosphorus-containing lubricating oil additives: Lubricant Additives Chemistry and Application 45-111 (L.R. Rudick, Marcel Dekker, Inc. 2003); and Kenbeck, D. and T.F. Buenemann, Organic Modifiers: Lubricant Additives Chemistry and Application 203-222 (L.R. Rudick, Marcel Dekker, Inc. 2003).
  • the present invention provides lubricant additives for improving the performance characteristics, such as load carrying capacity of mechanical systems.
  • the present invention provides a lubricant additive comprising elements or components that are intended to enhance the performance characteristics of a lubricant base stock or fully formulated lubricant, including anti-wear (AW), extreme pressure (EP), friction modifying (FM) and surface fatigue life (SFL) modifying compositions.
  • this invention provides a multifunctional lubricant additive composition for improving the performance characteristics of a natural or synthetic lubricant for use in transmission fluid products that meet both civil and military specifications.
  • the present invention provides a multifunctional composition for use in improving performance of metals and alloys of power transmission components, including gears, bearings, splines, shafts, and springs.
  • this invention provides a multifunctional lubricant additive composition for improving the performance characteristics of engines and related propulsive devices used to power automobiles, both stock (production) and specialty (e.g. racing and other high performance) varieties, and heavy on- and off-road equipment, such as farm implements and construction equipment.
  • the present invention provides a multifunctional lubricant additive composition capable of being combined with lubricant stocks and other additives to produce a fully formulated lubricant that beneficially reduces friction and scuffing (scoring), and increases resistance to surface degradation, including but not limited to, fatigue including micro and and macro pitting and wear.
  • the present invention provides a multifunctional lubricant additive composition for improving the performance characteristics of a lubricant, which includes one or more of the following components: (a) a molybdenum compound represented by the general formula:
  • R 3 and R 4 are each independently a C n H 2n+ i alkyl group, wherein n is an integer of about 2 ⁇ n ⁇ 10, and m is an integer of about 0 ⁇ m ⁇ 4;
  • R 3 , R 4 , R 5 , and R 6 are each a C h H 2 h+i secondary alkyl group represented by the formula:
  • R e wherein h is an integer of about 3 ⁇ h ⁇ 11 , wherein R 7 and R 8 are each a CiH 2 i+i alkyl group, and i is an integer of about 1 ⁇ i ⁇ 5;
  • R 9 , R 10 , R 11 , R 12 , R 13 , and R 14 are each a C j H 2j+ i alkyl group, and j is an integer of about 1 ⁇ j ⁇ 20, wherein the alkyl groups exhibit tertitary structures, and;
  • R 15 , R 16 , R 17 , and R 18 are each a C k H 2k +i alkyl group, k is an integer of about 1 ⁇ k ⁇ 30, and R 15 , R 16 , R 17 , and R 18 optionally form a ring structure with the nitrogen atom to which they are bonded; wherein (A) is a chain of sulfur atoms, S n , or S-(CH 2 ) m -S, n is an integer of about 1 ⁇ n ⁇ 10, and m is an integer of about 1 ⁇ m ⁇ 6; wherein the total amount of compounds (a) to (d) is equal to or less than about 15% by mole, based on the total amount of lubricant.
  • the figure shows the relationship between the average traction (friction) coefficient and average load stage for various lubricants.
  • the vertical arrows 11 , 21 , 31 indicate the average scuffing (scoring) failure load stage (load carrying capacity) of Hatco HXL-7944 Oil 10, Exxon-Mobil Jet Oil Il 20; and Formulation #4 30, respectively.
  • a higher scuffing (scoring) failure load stage indicates greater load-carrying capacity of the lubricant.
  • the present invention provides a multifunctional lubricant additive composition for improving the performance characteristics of a lubricant base stock or fully formulated lubricant.
  • the composition includes the following components set forth below: (I) about 0.1 % to about 6% by mole concentration of a molybdenum compound (a), based on the total amount of lubricant; (II) about 0.1% to about 6% by mole concentration of a secondary zinc dialkyl dithiophosphate compound (b), based on the total amount of lubricant; (III) about 0.1 % to about 6% by mole concentration of an aryl or alkyl phosphite compound (c), based on the total amount of lubricant; and (IV) about 0.1 % to about 6% by mole concentration of an alkylthiocarbamoyl compound (d), based on the total amount of lubricant, wherein the total concentration of the four additives in the composition will not exceed about 15% by mole based on the total amount of
  • the multifunctional lubricant additive composition is prepared from the following components:
  • X 1 is an oxygen or sulfur atom and R 3 and R 4 are each independently a C n H 2 n+i alkyl group, wherein n is an integer of about 2 ⁇ n ⁇ 10, preferably about 4 ⁇ n ⁇ 6, and m is an integer of about 0 ⁇ m ⁇ 4.
  • R 3 , R 4 , R 5 , and R 6 are each a C h H 2 h+i secondary alkyl group represented by the formula: R'
  • h is an integer of about 3 ⁇ h ⁇ 11 , preferably about 4 ⁇ h ⁇ 6; wherein R 7 and R 8 are each CiH 2 i + i alkyl groups, and i is an integer of about 1 ⁇ i ⁇ 5, preferably about 1 ⁇ I ⁇ 3;
  • R 9 , R 10 , R 11 , R 12 , R 13 , and R 14 are each a C 1 H 2 J +I alkyl group, and j is an integer of about 1 ⁇ j ⁇ 20, preferably about 4 ⁇ j ⁇ 8, wherein the alkyl groups exhibit tertiary structures, and;
  • R 15 , R 16 , R 17 , and R 18 are each a CkH 2 ⁇ ⁇ +i alkyl group, and k is an integer of about 1 ⁇ k ⁇ 30, preferably about 4 ⁇ k ⁇ 8, and R 15 , R 16 , R 17 , and R 18 optionally form a ring structure with the nitrogen atom to which they are bonded;
  • (A) is a chain of sulfur atoms, S n , or S-(CH 2 )m-S, and n is an integer of about 1 ⁇ n ⁇ 10, preferably about 1 ⁇ n ⁇ 6, and m is an integer of about 1 ⁇ m ⁇ 6, preferably about 1 ⁇ m ⁇ 3; wherein the total amount of compounds (a) to (d) is equal to or less than about 15% by mole, based on the total amount of lubricant.
  • Compound (a) of the multifunctional lubricant additive composition is present in an amount from about 0.1 % to about 6% by mole, based on the total amount of lubricant. In a preferred embodiment, compound (a) is present in an amount from about 0.1 % to about 3% by mole, based on the total amount of lubricant.
  • Compound (b) of the multifunctional lubricant additive composition is present in an amount from about 0.1% to about 6% by mole, based on the total amount of lubricant. In a preferred embodiment, compound (b) is present in an amount from about 0.1 % to about 3% by mole, based on the total amount of lubricant.
  • Compound (c) of the multifunctional lubricant additive composition is present in an amount from about 0.1% to about 6% by mole, based on the total amount of lubricant. In a preferred embodiment, compound (c) is present in an amount from about 0.1 % to about 3% by mole, based on the total amount of lubricant.
  • Compound (d) of the multifunctional lubricant additive composition is present in an amount from about 0.1 % to about 6% by mole based on the total amount of lubricant. In a preferred embodiment, compound (d) is present in an amount from about 0.1 % to about 3% by mole based on the total amount of lubricant.
  • Lubricants that the present invention can improve include but are not limited to gear oil, bearing oil, sliding surface lubrication oil, chain lubricating oil, and engine oil.
  • various types of lubricants, greases, especially synthetic polyol ester (POE) based lubricants, can be used as lubricant bases.
  • the present invention is useful as an additive composition for natural and synthetic aviation (aerospace) and automotive lubricants. Moreover, a combination of the multifunctional additive composition with the above- described lubricants improves transmission power throughput and system power density.
  • multifunctional additive composition include turbine engine and transmission oils designed to meet government civil (FAA) and military (DoD) specification and requirements. Additional uses of the multifunctional additive composition include the demonstrated ability to improve scuffing (scoring) performance of metals and alloys that are commonly used for power transmission components, including but not limited to gears, bearings, splines, shafts, and springs. As such, these improvements decrease the incidence of component and system failure and rejection during customer acceptance test protocols (ATPs).
  • ATPs customer acceptance test protocols
  • the additive composition also improves pitting (surface) fatigue life and reduces the rate of component and system degradation due to wear and other phenomena.
  • the present invention provides a method of improving the performance characteristics of a lubricant.
  • the method comprises the step of: mixing a lubricant with a multifunctional lubricant additive composition that includes at least one of the compounds (a) to (d) of the above-described multifunctional lubricant additive composition thereby producing a fully formulated lubricant.
  • the molar concentration of compounds (a) to (d) may be varied to achieve a desired effect, provided however, that the total amount of the four additives is about 15% or less by mole based on the total amount of lubricant.
  • HXL-7994 oil was specially prepared by Hatco to replicate Exxon-Mobil Jet Oil II, but without Exxon-Mobil Jet Oil ll's anti-wear additive tricresyl phosphate (TCP).
  • Hatco HXL-7994 oil contains an anti-oxidant package and a yellow metal corrosion inhibitor and uses a 5 cSt polyol ester base stock, HXL-1570, having the typical properties noted in Table A below. TABLE A. Properties of HXL-1570
  • Formulation #4 contained the following additives:
  • This multifunctional additive package of Formulation #4 increased the load-carrying capacity of the Hatco HXL-7994 oil by about 3.94 times, which is superior to conventional oils such as Exxon-Mobil Jet Oil Il (a standard version of MIL-PRF-23699, a 5 cSt gas turbine engine oil), which typically has excellent lubricant performance as compared to other brands and versions of MIL-PRF-23699 oil.
  • Exxon-Mobil Jet Oil Il a standard version of MIL-PRF-23699, a 5 cSt gas turbine engine oil
  • the Hatco HXL-7994 oil 10 had an average scuffing (scoring) failure load stage of about 5.7 (arrow 11 )
  • the Exxon-Mobil Jet Oil Il 20 had an average scuffing (scoring) failure load stage of about 19.2 (arrow 21 )
  • Formulation #4 30 had an average scuffing (scoring) failure load stage of about 22.5 (arrow 31 ), which indicates that Formulation #4 has a load carrying capacity about 3.94 times greater than that of the Hatco HXL-7994 oil.
  • WAM Load Capacity Test Method The WAM Test is designed to evaluate the loading capacity of lubricants and load bearing surfaces by evaluating the wear, tear, and scuffing (scoring) thereof over a large temperature range.
  • Table B shows a summary of the WAM Test conditions that were utilized to test various lubricants of this invention.
  • test suspension High load-carrying oils frequently result in test suspension at load stage 30 without a scuffing (scoring) event.
  • tests can be run with a modified test protocol.
  • the modified test protocol operates at a lower entraining velocity than the standard test protocol, which reduces the EHD film thickness and increases the test severity by causing greater asperity interaction.
  • the test essentially operates at a reduced film thickness to surface roughness (h/ ⁇ ) ratio.
  • the modified test protocol was developed for high load-carrying oils used for aviation gearboxes. These oils include the DOD-PRF-85734 oils for the U.S. Navy and the Def Stan 91-100 oils for the U.K. Ministry of Defense. With the modified test protocol, the highest load-carrying oils currently used in military aircraft experience scuffing (scoring) failures at load stages that range from approximately 19 to 28.
  • Formulation #4, the Hatco HXL-7944 oil, and the Exxon-Mobil Jet Oil Il were comparatively evaluated for scuffing (scoring) resistance using a load capacity test method developed for the US Navy.
  • the test method used ball and disc specimens.
  • the ball specimens were 13/16-inch diameter, and the disc specimens were 4 inches in diameter and Vz inch thick. Material composition, hardness and surface finish were closely controlled.
  • the specimens were fabricated from AISI 9310 steel, a surface-carburizing alloy that is very common for gear applications.
  • AISI 9310 balls, or "Hard Ground” balls were heat-treated and ground in a ball manufacturing process. The balls were fabricated through the hard grinding stage. The surface finish following this operational stage was between about 10-12 microinch Ra.
  • composition, hardness and surface finish of the specimens are given below:
  • the load carrying capacity is indicated by an average scuffing (scoring) failure stage (load stage). Increased performance is observed with higher load stages.
  • Table C our experimental results show that the average scuffing (scoring) failure stage of Formulation # 4 is about 22.5. This scuffing (scoring) load is 3.94 times greater than that of the Hatco HXL-7944 oil, which delivered an average scuffing (scoring) failure stage of 5.7.
  • the load carrying capacity of Formulation #4 is also superior to that of Exxon-Mobil Jet Oil II, which delivered an average scuffing (scoring) failure stage of 19.2.
  • compositions apply equally to other lubricant stock compositions including, but not limited to, lubricants comprising grease, mineral (hydrocarbon-based), polyalkylene glycol (PAG), aromatic naphthalene (AN), alkyl benzenes (AB) and polyalphaolefin (PAO) types.
  • PEO polyol ester

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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)
EP05858295A 2004-11-04 2005-11-04 Multifunktionelle schmiermittelzusatzzusammensetzung Withdrawn EP1814969A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62541604P 2004-11-04 2004-11-04
PCT/US2005/039766 WO2007001445A2 (en) 2004-11-04 2005-11-04 Multifunctional lubricant additive package

Publications (1)

Publication Number Publication Date
EP1814969A2 true EP1814969A2 (de) 2007-08-08

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EP05858295A Withdrawn EP1814969A2 (de) 2004-11-04 2005-11-04 Multifunktionelle schmiermittelzusatzzusammensetzung
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EP05858292A Withdrawn EP1814968A2 (de) 2004-11-04 2005-11-04 Schmiermittel mit multifunktionellen zusatzzusammensetzungen für verbesserte lasttragekapazität, erhöhte oberflächenermüdungsbeständigkeit und verminderte reibung
EP05858293A Withdrawn EP1828357A2 (de) 2004-11-04 2005-11-04 Schmiermittelzusatzzusammensetzungen für verbesserte lasttragekapazität und oberflächenermüdungsbeständigkeit

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EP05858292A Withdrawn EP1814968A2 (de) 2004-11-04 2005-11-04 Schmiermittel mit multifunktionellen zusatzzusammensetzungen für verbesserte lasttragekapazität, erhöhte oberflächenermüdungsbeständigkeit und verminderte reibung
EP05858293A Withdrawn EP1828357A2 (de) 2004-11-04 2005-11-04 Schmiermittelzusatzzusammensetzungen für verbesserte lasttragekapazität und oberflächenermüdungsbeständigkeit

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JP5362990B2 (ja) 2013-12-11
WO2007001445A3 (en) 2007-03-22
WO2006137928A3 (en) 2007-03-22
JP2008519125A (ja) 2008-06-05
EP1828358A2 (de) 2007-09-05
WO2007001443A2 (en) 2007-01-04
US20090082236A1 (en) 2009-03-26
US20080312116A1 (en) 2008-12-18
EP1814968A2 (de) 2007-08-08
JP2008519127A (ja) 2008-06-05
US20090011964A1 (en) 2009-01-08
WO2007001444A3 (en) 2007-03-22
JP2008519124A (ja) 2008-06-05
EP1828357A2 (de) 2007-09-05
US20090137436A1 (en) 2009-05-28
WO2007001443A3 (en) 2007-03-22
WO2006137928A2 (en) 2006-12-28
WO2007001445A2 (en) 2007-01-04
WO2007001444A2 (en) 2007-01-04
JP2008519126A (ja) 2008-06-05

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