WO2011054482A1 - Compositions lubrifiantes - Google Patents

Compositions lubrifiantes Download PDF

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Publication number
WO2011054482A1
WO2011054482A1 PCT/EP2010/006608 EP2010006608W WO2011054482A1 WO 2011054482 A1 WO2011054482 A1 WO 2011054482A1 EP 2010006608 W EP2010006608 W EP 2010006608W WO 2011054482 A1 WO2011054482 A1 WO 2011054482A1
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WO
WIPO (PCT)
Prior art keywords
viscosity
weight
lubricant
lubricant composition
polyalphaolefin
Prior art date
Application number
PCT/EP2010/006608
Other languages
English (en)
Inventor
Stephen C Lakes
Mark Witschger
Vasudevan Balasubramaniam
Original Assignee
Cognis Ip Management Gmbh
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Filing date
Publication date
Application filed by Cognis Ip Management Gmbh filed Critical Cognis Ip Management Gmbh
Priority to NO10775721A priority Critical patent/NO2496672T3/no
Priority to CA2779346A priority patent/CA2779346C/fr
Priority to AU2010314413A priority patent/AU2010314413B2/en
Priority to CN2010800499611A priority patent/CN102712870A/zh
Priority to JP2012537316A priority patent/JP2013510198A/ja
Priority to ES10775721.3T priority patent/ES2665459T3/es
Priority to MX2012004802A priority patent/MX2012004802A/es
Priority to EP10775721.3A priority patent/EP2496672B1/fr
Priority to PL10775721T priority patent/PL2496672T3/pl
Publication of WO2011054482A1 publication Critical patent/WO2011054482A1/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
    • 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
    • C10M169/041—Mixtures of base-materials and additives the additives being macromolecular compounds 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
    • 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
    • C10M2205/026—Butene
    • 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
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds 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
    • 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
    • C10N2030/08—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
    • C10N2030/10—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
    • C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
    • 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
    • C10N2030/18—Anti-foaming 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
    • C10N2030/26—Waterproofing or water resistance
    • 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

Definitions

  • This invention relates to lubricant compositions having utility in numerous applications, particularly in connection with gear, transmission and/or axle applications in the automotive and machinery industries.
  • 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.
  • Lubricating oils in general, and gear and axle lubricants in particular frequently must satisfy a relatively large number of performance criteria to be commercially successful.
  • 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.
  • Gear lubricant compositions are classified by the American Petroleum Institute
  • API using "GL” ratings. These classifications are subdivided into six classes. The lowest rating, API GL-1 , classifies oils used for light conditions, which consist of base oils without additives. The highest rating, API GL-6, classifies oils for very heavy conditions, such as high speeds of sliding and significant shock loading, and which contain up to 10% high performance antiscuffing additives. However, class API GL-6 is not applied any more as it is considered that class API GL-5 will meet most severe requirements. Lubricant compositions classified meeting API GL-5 performance requirements are generally applied, for example, in hypoid gears having significant displacement of axles.
  • the viscosity-temperature relationship of a lubricating composition is another of the critical criteria to be considered when selecting a lubricant for a particular application.
  • Mineral oils commonly used as a base for single and multigraded lubricants exhibit a relatively large change in viscosity with a change in temperature. Fluids exhibiting such a relatively large change in viscosity with temperature have a low viscosity index.
  • the SAE J306 describes viscometric qualifications for axle and gear lubricant compositions. This classification is based on the lubricant viscosity measured at both high and low temperatures.
  • the high-temperature kinematic viscosity values are determined according to ASTM D 445, with the results reported in centistokes (cSt).
  • the low-temperature viscosity values are determined according to ASTM D 2983 and the results are reported in centipoise (cP).
  • Table 1 summarizes high and low temperature requirements for qualifications of axle and gear lubricant compositions.
  • SAE Society of Automotive Engineers
  • High temperature viscosity is related to the hydrodynamic lubrication characteristics of the fluid.
  • Some lubricant compositions may contain high molecular weight polymers, known as viscosity modifiers or viscosity index improvers, which function to increase the viscosity of the fluids. During use, however, these polymers may shear to a lower molecular weight, thereby resulting in a fluid with a lower viscosity than that of the new fluid.
  • Low temperature viscosity requirements are related to the ability of the fluid to flow and provide adequate lubrication to critical parts under low ambient temperature conditions.
  • 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) base-stock; (b) viscosity improver; and (c) at least one additive.
  • Certain lubricant compositions of the present invention comprise: (a) base-stock comprising (i) a low viscosity polyalphaolefm ("PAO"), and (ii) at least one diester; (b) viscosity improver comprising (i) at least one relatively high viscosity PAO-type viscosity improver, and (ii) polyisobutylene; 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.
  • the lubricant compositions of the present invention are multiviscosity- grade lubricants having a SAE viscosity classification of 75W-140, and meet API GL-5 performance requirements.
  • compositions having an SAE viscosity classification of 75W-140 and meeting API GL-5 performance requirements comprise:
  • SAE 75W-140 lubricant compositions of the present invention meet API GL-5 performance requirements and provide cost-effective lubricant compositions that exhibit improved performance in ring and pinion gears with respect to one or more, and preferably all, of the following advantageous properties: ridging, rippling, pitting, spalling, scoring, and wear.
  • the present invention is directed in one aspect to lubricant compositions comprising: (a) base-stock; (b) viscosity improver; and (c) at least one additive.
  • the lubricant composition is a multiviscosity-grade lubricant having a SAE viscosity classification of 75W-140, and meets API GL-5 performance requirements.
  • the base-stock of the present invention comprises: (i) a low viscosity polyalphaolefin ("PAO"); and (ii) at least one diester.
  • PAO low viscosity polyalphaolefin
  • the viscosity improver of the present invention comprises: (i) at least one relatively high viscosity PAO-type viscosity improver; and (ii) polyisobutylene.
  • the performance additive package comprises at least one additive effective to improve at least one property of the equipment in which the lubricant is to be used.
  • the present invention also provides 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.
  • 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 embodiments the present lubricant compositions comprise:
  • compositions of the present invention when used in connection with ring and pinion gears, exhibit and/or produce advantageous properties with respect to one or more, and preferably all, of the following: ridging, rippling, pitting, spading, scoring, and wear.
  • the PAOs of the present invention comprise a class of hydrocarbons that can be manufactured by the catalytic oligomerization (polymerization to low-molecular-weight procedures) of linear a-olefins typically ranging from 1-octene to 1-dodecene, with 1- decene being a preferred material, although polymers of lower olefins such as ethylene and propylene may also be used, including copolymers of ethylene with higher olefins.
  • numerous particular compounds or combinations of compounds are available for use in connection with each of the components as described herein.
  • the base-stock of the present invention comprises at least one relatively low viscosity PAO and at least one diester.
  • the low viscosity PAO of the present invention in certain embodiments the low viscosity PAO comprises a polyalphaolefin having a viscosity of not greater than about 12 cSt.
  • the low viscosity PAO of the present invention comprises ChevronPhillips PAO-2 and Ineos PAO-6. Further examples of such low viscosity PAOs should be apparent to one of ordinary skill in the art.
  • the diester of the present invention in certain embodiments the diester comprises an adipate ester.
  • the adipate ester comprises a decyl adipate, and even more particularly one or more adipate esters selected from the group consisting of di-isodecyl adipate, di- isodecyl azelate, and di-tridecyl adipate. While it is contemplated that a large range of relative concentrations of such components may be present, in general, the base-stock of the present invention comprises in certain embodiments a low viscosity PAO.ester weight ratio of from about 7:1 to about 1 :3, and preferably of from about 2.6:1 to about 1 :1.6.
  • the lubricant compositions of the present invention comprise a low viscosity PAO in an amount of from about 10-35% by weight, and in yet other embodiments of from about 12-20% by weight. In certain embodiments, the lubricant compositions of the present invention comprise a diester in an amount of from about 5-30% by weight, and in yet other embodiments of from about 7.5-20% by weight.
  • the viscosity improver of the present invention comprises at least one relatively high viscosity PAO and polyisobutylene.
  • the high viscosity PAO of the present invention comprises a polyalphaolefin having a viscosity of not greater than about 40 cSt, and preferably from about 40 to about 1000 cSt.
  • the high viscosity PAO of the present invention comprises ExxonMobil or Chemtura PAO- 00. Further examples of such high viscosity PAOs should be apparent to one of ordinary skill in the art.
  • the polyisobutylene comprises Ineos H-1500-SPA or Lubrizol 8404. Further examples of such polyisobutylenes should be apparent to one of ordinary skill in the art. While it is contemplated that a large range of relative concentrations of such components may be present, in general, the viscosity improver of the present invention comprises in certain embodiments a high viscosity PAO:polyisobutylene weight ratio of from about 37.5:1 to about 1.2:1 , and preferably of from about 12:1 to about 2.6:1.
  • the lubricant compositions of the present invention comprise a high viscosity PAO in an amount of from about 30-75% by weight, and in yet other embodiments of from about 40-60% by weight.
  • the lubricant compositions of the present invention comprise polyisobutylene in amount of from about 2-25% by weight, and in yet other embodiments of from about 5-15% by weight.
  • the at least one performance additive of the present invention comprises 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.
  • the performance additive comprises at least one additive based on sulfur chemistry and at least one additive based on phosphorous chemistry.
  • a typical additive package would normally contain one or more of a dispersant, antioxidant, corrosion inhibitor, anti-wear agent, anti-rust agent, and extreme pressure agent.
  • the additive package comprises Afton HiTec 317. Further examples of such additives should be apparent to one of ordinary skill in the art.
  • the additive package optionally comprises an antifoam agent.
  • the antifoam agents comprise silicones and miscellaneous organic compounds. In certain other embodiments, the antifoam agent comprises lower molecular weight dimethyl siloxane. In one embodiment, the antifoam agent comprises Dow Corning DC-200 / 300 to 60,000 cSt. Further examples of such antifoam agents should be apparent to one of ordinary skill in the art.
  • the lubricant compositions of the present invention comprise an additive package in an amount of from about 5-10% by weight, and in other embodiments of from about 7.5-9% by weight. In certain embodiments, the lubricant compositions of the present invention comprise an antifoam agent in an amount of from about 0.001 -0.004% by weight.
  • the present lubricant compositions may be prepared by mixing the components together at a temperature of from about 35°C to about 95°C, preferably from about 65°C to about 85°C.
  • the base-stocks, viscosity improvers, and additives are placed in a suitable metal or glass vessel. Mechanical agitation is supplied to promote mixing. Sufficient mixing time is utilized to ensure that a homogeneous product is present.
  • the process for making the lubricant compositions of the present invention should be known to and appreciated by one of ordinary skill in the art given the present disclosure. One of ordinary skill in the art would appreciate that this method of preparation is not limiting to the invention, and that one or more components may be modified in accordance with the teachings herein or that which is known in the art.
  • the lubricant compositions of the present invention preferably meet the requirements of both low-temperature and high-temperature grade lubricants, and in certain embodiments are multiviscosity-grade lubricants.
  • Certain lubricant compositions of the present invention are classified as SAE 75W-140 lubricants and meet the low- temperature requirements for SAE 75W and the high-temperature requirements for SAE 140.
  • Lubricant compositions classified as SAE 75W have a viscosity of about 150,000 cP at -40°C.
  • Lubricant compositions classified as SAE 140 are those having a kinematic viscosity at 100°C of at least about 24.0 cSt and less than about 32.5 cSt.
  • the lubricant compositions of the present invention meet API Category GL-5 performance requirements, and in yet other embodiments meet the SAE J2360 performance standard. Certain lubricant compositions of the present invention are intended for gears. In certain embodiments, the lubricant compositions are intended for gears in automotive axles equipped with hypoid gears, operating under various combinations of high-speed/shock-load and low-speed/high-torque conditions.
  • Certain lubricant compositions of the present invention meet the API Category GL-5 performance requirements outlined by the following tests and acceptance criteria: (1 ) Standard Version of L-42; (2) Canadian Version of L-42; (3) Standard Version of test method ASTM D 6121 ; (4) Canadian Version of test method ASTM D 6121 ; (5) test method ASTM D 7038 or L-33; (6) test method ASTM D 5704 or L-60; (7) test method ASTM D 892; and (8) test method ASTM D 130.
  • one embodiment of the lubricant compositions of the present invention comprises: (a) a low viscosity polyalphaolefin ("PAO"); (b) a high viscosity PAO; (c) a diester; (d) polyisobutylene (“PIB”); (e) an additive; and, optionally (f) an antifoam agent; wherein the lubricant composition is a multiviscosity-grade lubricant having a SAE viscosity classification of 75W-140 and meets API Category GL- 5 performance requirements.
  • PAO low viscosity polyalphaolefin
  • PAO low viscosity polyalphaolefin
  • PAO low viscosity PAO
  • PIB polyisobutylene
  • an additive and, optionally (f) an antifoam agent
  • the lubricant composition is a multiviscosity-grade lubricant having a SAE viscosity classification of 75W-140 and meets API Category
  • the present lubricant composition comprises: (a) 12-20% by weight of a low viscosity PAO;
  • Example Lubricant Composition 1 was prepared by mixing together the components as shown in Table 2 as follows.
  • the objective of this procedure is to evaluate the anti-scoring properties of gear lubricants under high-speed and shock conditions.
  • the performance of procedure lubricants is compared to that of reference oils.
  • a specially selected rear axle-mounting assembly and two large dynamometers serve as the procedure apparatus.
  • a break-in is conducted at moderate speed and load at a lubricant temperature of 225°F (107.2 °C). This is followed by a series of moderate accelerations and decelerations with temperatures approaching 280°F (137.8 °C). The final series of runs consists of highspeed accelerations with rapid decelerations.
  • This test may be performed under two different sets of operating conditions, commonly referred to as "Standard” and “Canadian.”
  • the ring and pinion gears are evaluated on a pass/fail basis.
  • the pass/fail criteria require that there be less quantity of scoring on the ring and pinion gears than on the associated pass reference oil procedure.
  • “Scoring,” with respect to ring and pinion gears, as defined by ASTM D 7450, is the rapid removal of metal from the tooth surfaces caused by the tearing out of small contacting particles that have welded together as a result of metal-to-metal contact; a scored surface is characterized by a matte or dull finish.
  • the results of the L-42 Standard and Canadian tests performed are reported in the following Tables 3 and 4, respectively.
  • the lubricant composition in accordance with the present invention passed both the L-42 Standard and Canadian tests by exhibiting an equal to or better (lower) score than the mean scoring values of the passing reference oil test results used to calibrate the standard.
  • This method is used for determining the load-carrying, wear, and extreme pressure characteristics of gear lubricants in hypoid axle assemblies under conditions of high-speed, low-torque, and low-speed, high-torque operation.
  • a specially selected rear axle assembly, engine, and transmission, and two large dynamometers serve as the procedure apparatus.
  • the procedure axle is operated for 100 minutes at 440 axle rpm, 295°F (146.1 °C) lubricant temperature, and 9460 Ib-in (109 m kg) of torque.
  • the axle is then operated for 24 hours at 80 axle rpm, 275°F (135.0 °C) lubricant temperature, and 41 ,800 Ib-in (482 m kg) of torque.
  • the ring and pinion gears are evaluated for an ASTM merit rating based on the ridging, rippling, wear, pitting/spalling, and scoring.
  • Ring and pinion gears are the alteration of the tooth surface to give a series of parallel raised and polished ridges running diagonally in the direction of sliding motion, either partially or completely across the tooth surfaces or gears.
  • “Wear,” with respect to ring and pinion gears, as defined by ASTM D 7450, is the removal of metal, without evidence of surface fatigue or adhesive wear, resulting in partial or complete elimination of tool or grinding marks or development of a discernible shoulder ridge at the bottom of the contact area near the root or at the toe or heel end of pinion tooth contact area (abrasive wear).
  • “Pitting,” with respect to ring and pinion gears, as defined by ASTM D 7450 refers to small irregular cavities in the tooth surface, resulting from the breaking out of small areas of surface metal.
  • “Spalling,” with respect to ring and pinion gears, as defined by ASTM D 7450 is the breaking out of flakes of irregular area of the tooth surface, a condition more extensive than pitting.
  • “Scoring,” with respect to ring and pinion gears, as defined by ASTM D 7450, is the rapid removal of metal from the tooth surfaces caused by the tearing out of small contacting particles that have welded together as a result of metal-to-metal contact; a scored surface is characterized by a matte or dull finish.
  • the lubricant composition in accordance with the present invention passed both the ASTM D 6121 Standard and Canadian tests by exhibiting an equal to or better (higher) ASTM merit rating than the minimum ratings specified.
  • This method is used for evaluating the rust and corrosion inhibiting properties of a gear lubricant while subjected to water contamination and elevated temperature.
  • An electric motor, specially selected hypoid differential housing assembly, cooling fan, heating lamps, and heated storage box serve as the procedure apparatus.
  • the differential housing assembly is operated for 4 hours at 2,500 input rpm at 180°F (82.2 °C) lubricant temperature with 1 fl. oz. of distilled water mixed in the lubricant.
  • the procedure unit is then placed in the storage box and stored for 162 hours at 125°F (51 .7 °C).
  • the procedure parts of the assembly are rated for the presence of rust. All internal moving parts (ring, pinion, bearings, differential gears, etc.) are evaluated for a final rust merit rating.
  • API Category GL-5 candidate fluids are required to have a Final Rust Corrosion Merit Rating of 9.0 or greater.
  • Example Lubricant Composition 1 passed the ASTM D 7038 test by exhibiting a 9.3 Final Rust Corrosion Merit Rating.
  • This method is used for determining the deterioration of lubricants under severe thermal and oxidative conditions.
  • a gear case assembly, two spur gears, two copper strips, a bearing, a temperature control system, an alternator, a motor, and a regulated air supply serve as major parts of the procedure fixture.
  • the spur gears are rotated under load at 1750-rpm input for 50 hours.
  • the lubricant temperature is maintained at 325°F (162.8 °C). Airflow through the lubricant is controlled at 22.1 mg/min for the procedure's duration.
  • the physical and chemical properties of the oil and deposits on the gears are evaluated at the end of the procedure.
  • the large and small gears are evaluated for carbon/varnish and sludge.
  • the used oil is evaluated for any increase in viscosity, pentane insolubles, and toluene insolubles.
  • the results of the ASTM D 5470 test performed are reported in Table 7 as follows. Table 7
  • the lubricant composition in accordance with the present invention passed the ASTM D 5704 test by exhibiting % viscosity increase, weight % pentane and toluene insolubles, and carbon/varnish and sludge values as required by the API GL-5 acceptance criteria.
  • the lubricant composition in accordance with the present invention passed the ASTM D 892 test by exhibiting tendency / stability foaming properties as required by the API GL-5 acceptance criteria.
  • Example Lubricant Composition 1 passed the ASTM D 130 test by exhibiting a 2e ASTM rating.

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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)

Abstract

La présente invention concerne une composition lubrifiante, de grade 75W-140 selon la Society of Automotive Engineers ( » SAE ») et capable de répondre aux exigences de classification de performance GL-5 de la American petroleum Institute ( » API »), destinée à être utilisée en association à un dispositif impliquant un contact métal-métal de parties en mouvement, qui comprend : (a) une huile de base comprenant (i) au moins une polyalphaoléfine de viscosité relativement faible, et (ii) au moins un diester ; (b) un améliorateur de viscosité qui comprend (i) au moins une polyalphaoléfine de viscosité relativement élevée, et (ii) du polyisobutylène ; et (c) un additif de performance comprenant au moins un additif efficace pour améliorer au moins une propriété du lubrifiant et/ou la performance des équipements dans lesquels le lubrifiant doit être utilisé.
PCT/EP2010/006608 2009-11-06 2010-10-28 Compositions lubrifiantes WO2011054482A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
NO10775721A NO2496672T3 (fr) 2009-11-06 2010-10-28
CA2779346A CA2779346C (fr) 2009-11-06 2010-10-28 Compositions lubrifiantes destinees a une utilisation en association avec un dispositif impliquant un contant metal-metal de pieces mobiles
AU2010314413A AU2010314413B2 (en) 2009-11-06 2010-10-28 Lubricant compositions
CN2010800499611A CN102712870A (zh) 2009-11-06 2010-10-28 润滑剂组合物
JP2012537316A JP2013510198A (ja) 2009-11-06 2010-10-28 潤滑油組成物
ES10775721.3T ES2665459T3 (es) 2009-11-06 2010-10-28 Composiciones lubricantes
MX2012004802A MX2012004802A (es) 2009-11-06 2010-10-28 Composiciones lubricantes.
EP10775721.3A EP2496672B1 (fr) 2009-11-06 2010-10-28 Compositions lubrifiantes
PL10775721T PL2496672T3 (pl) 2009-11-06 2010-10-28 Kompozycje środków smarujących

Applications Claiming Priority (2)

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US25881809P 2009-11-06 2009-11-06
US61/258,818 2009-11-06

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WO2011054482A1 true WO2011054482A1 (fr) 2011-05-12

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US (1) US20110111996A1 (fr)
EP (1) EP2496672B1 (fr)
JP (1) JP2013510198A (fr)
KR (1) KR20120114218A (fr)
CN (1) CN102712870A (fr)
AU (1) AU2010314413B2 (fr)
CA (1) CA2779346C (fr)
ES (1) ES2665459T3 (fr)
MX (1) MX2012004802A (fr)
NO (1) NO2496672T3 (fr)
PL (1) PL2496672T3 (fr)
WO (1) WO2011054482A1 (fr)

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WO2012119974A1 (fr) * 2011-03-08 2012-09-13 Cognis Ip Management Gmbh Compositions de lubrifiant à haute viscosité
WO2014065984A1 (fr) * 2012-10-24 2014-05-01 Exxonmobil Reearch And Engineering Company Associations de modificateur de viscosité de réserve de base d'huile de graissage à haut indice de viscosité et huiles de graissage issues de celles-ci

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CN102417842B (zh) * 2011-10-13 2013-11-06 浙江阿克希龙舜华铝塑业有限公司 润滑油及使用该润滑油的口红管中束芯
CN106893629B (zh) * 2012-02-16 2020-02-28 路博润公司 润滑剂添加剂增进剂体系
US8490471B1 (en) * 2012-03-23 2013-07-23 Afton Chemical Corporation Bench test screening method for fluid antifoam additives
US9187707B2 (en) * 2013-01-18 2015-11-17 Sal A Randisi, Sr. Lubricating composition and method for preparing same
CN105733769B (zh) * 2016-03-07 2018-12-11 哈尔滨长泰高级润滑油有限公司 共晶磁膜润滑油及其制备方法
CN112126494B (zh) * 2020-08-24 2022-04-19 北京盛鑫和谐润滑油脂有限公司 一种超长换油周期的齿轮油及其制备方法

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WO2012119974A1 (fr) * 2011-03-08 2012-09-13 Cognis Ip Management Gmbh Compositions de lubrifiant à haute viscosité
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WO2014065984A1 (fr) * 2012-10-24 2014-05-01 Exxonmobil Reearch And Engineering Company Associations de modificateur de viscosité de réserve de base d'huile de graissage à haut indice de viscosité et huiles de graissage issues de celles-ci

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NO2496672T3 (fr) 2018-06-30
KR20120114218A (ko) 2012-10-16
CN102712870A (zh) 2012-10-03
PL2496672T3 (pl) 2018-08-31
EP2496672A1 (fr) 2012-09-12
AU2010314413B2 (en) 2016-04-28
ES2665459T3 (es) 2018-04-25
CA2779346C (fr) 2018-08-14
CA2779346A1 (fr) 2011-05-12
JP2013510198A (ja) 2013-03-21
US20110111996A1 (en) 2011-05-12
MX2012004802A (es) 2012-06-19
AU2010314413A1 (en) 2012-05-03
EP2496672B1 (fr) 2018-01-31

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