EP0819159A1 - Combinaison d'additifs pour pressions extremes, et lubrifiants la contenant - Google Patents

Combinaison d'additifs pour pressions extremes, et lubrifiants la contenant

Info

Publication number
EP0819159A1
EP0819159A1 EP96907589A EP96907589A EP0819159A1 EP 0819159 A1 EP0819159 A1 EP 0819159A1 EP 96907589 A EP96907589 A EP 96907589A EP 96907589 A EP96907589 A EP 96907589A EP 0819159 A1 EP0819159 A1 EP 0819159A1
Authority
EP
European Patent Office
Prior art keywords
combination
lubricating composition
hydrocarbon polymer
additive
metal
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Withdrawn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
EP96907589A
Other languages
German (de)
English (en)
Inventor
John Kenneth Esso Petroleum Company Ltd. GRAHAM
Alison Jane Esso Petroleum Company Ltd. AIKEN
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
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 Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of EP0819159A1 publication Critical patent/EP0819159A1/fr
Withdrawn legal-status Critical Current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
    • C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • C10M101/025—Petroleum fractions waxes
    • 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
    • C10M137/10—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
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/06—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing 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
    • 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
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/102—Aliphatic fractions
    • C10M2203/1025—Aliphatic fractions used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/104—Aromatic fractions
    • C10M2203/1045—Aromatic fractions used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/106—Naphthenic fractions
    • C10M2203/1065—Naphthenic fractions used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/108—Residual fractions, e.g. bright stocks
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/108—Residual fractions, e.g. bright stocks
    • C10M2203/1085—Residual fractions, e.g. bright stocks 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
    • C10M2205/026—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
    • C10M2205/14—Synthetic waxes, e.g. polythene waxes
    • 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
    • C10M2205/14—Synthetic waxes, e.g. polythene waxes
    • C10M2205/143—Synthetic waxes, e.g. polythene waxes 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
    • C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
    • 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
    • C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
    • C10M2205/163—Paraffin waxes; Petrolatum, e.g. slack wax used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/17—Fisher Tropsch reaction products
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/17—Fisher Tropsch reaction products
    • C10M2205/173—Fisher Tropsch reaction products used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/18—Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras
    • C10M2205/183—Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/086—Imides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/26—Amines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/28—Amides; Imides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/12—Groups 6 or 16
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties

Definitions

  • the present invention relates to an additive combination for enhancing the extreme- pressure ("EP") performance of lubricants and or for improving the load-carrying performance of lubricants, and to lubricants containing the additive combination.
  • EP extreme- pressure
  • the present invention provides an additive combination for enhancing the extreme- pressure ("EP") and/or load-carrying properties of a lubricating composition
  • a lubricating composition comprising a metal- containing friction-modifying and/or EP additive and a hydrocarbon polymer having a weight average molecular weight of at least 75,000.
  • the said polymer may be or may comprise a polyalkene.
  • the polymer may be or may comprise polyisoalkene.
  • the polyisoalkene may be or may comprise polyisobutene.
  • the polymer may have a weight average molecular weight of at least 100,000, preferably at least 500,000.
  • the polymer may have a weight average molecular weight which is at least predominantly less than 10,000,000, preferably at least predominantly less than 5,000,000, more preferably at least predominantly less than 2,500,000.
  • the metal of the metal-containing friction-modifying and/or EP additive may be molybdenum.
  • the molybdenum may be provided as an organic compound containing molybdenum.
  • the amount of the hydrocarbon polymer may be such as to provide a concentration thereof, when formulated into a lubricating composition, of at least 0.001 wt.%, preferably at least 0.005 wt.%, more preferably at least 0.025 weight percent, based on the total weight of the lubricating composition.
  • the amount of the hydrocarbon polymer may be such as to provide a concentration thereof, when formulated into a lubricating composition, not exceeding 1.0 wt.%, preferably no greater than 0.75 wt.%, more preferably no greater than 0.50 wt.%, based on the total weight of the lubricating composition.
  • the additive combination may additionally contain one or more components selected from : metal-free extreme-pressure agents, anti-wear agents, antioxidants, lubricity agents, metal deactivators, metal passivators, dispersants, detergents, anti-staining additives, detergent-inhibitors, rust inhibitors, filtration reagents, anti-foam agents, defoamers, viscosity index improvers, demulsifiers. emulsifiers, bitumen, organic fats, esters, alcohols, soaps, thickeners, pour-point depressants, flow improvers.
  • the invention also provides a lubricating composition comprising a lubricating basestock and the combination as described herein.
  • the lubricating basestock may comprise a liquid lubricating basestock.
  • the liquid lubricating basestock may be a hydrocarbon mixture.
  • the lubricating composition may comprise a grease-forming thickener.
  • the present invention is based on the surprising discovery that the incorporation in a lubricating composition of relatively high molecular weight hydrocarbon polymers and a metal- containing friction modifier and/or EP additive greatly increases the extreme pressure and/or load-carrying properties of the lubricating composition.
  • the discovery is all the more remarkable in that the said hydrocarbon polymer, which exhibits no significant propensity to increase the EP and/or load bearing capabilities of a lubricating composition, enhances these capabilities even at quite low concentrations when the composition also contains a metal- containing friction-modifier and/or EP additive.
  • Base Wax A crude petrolatum serving as part of the lubricating basestock, and obtainable from Witco under the tradename AMBERTECH 2;
  • Thickener 1 A polyisobutene of weight average molecular weight about 5,700, melting temperature about 70°C, used as a viscosity modifier, and obtainable from BP Chemicals under the tradename HYVIS 2000;
  • Thickener 2 An aliphatic hydrocarbon resin of weight average molecular weight about 1700, used as a viscosity modifier and obtainable from Exxon Chemical under the tradename ESCOREZ 1102;
  • Anti-Rust Agent An anti-rust agent, or rust inhibitor booster.
  • a suitable agent is obtainable from Ethyl Petroleum Additives Limited under the tradename HITECH 536 and is believed to be an amine salt of an organic dibasic acid (or an alkylene succinimide);
  • a molybdenum-containing EP agent A suitable agent is obtainable from R.T. Vanderbilt Co. Inc. under the trade name MOLYVAN L, which is based on molybdenum di(2-ethylhexyl) phosphorodithioate:
  • Hydrocarbon Polymer A high molecular weight polyisobutene polymer.
  • a suitable polymer is available from Exxon Chemical under the trade name PARATAC, which is a 6 wt.% solution of polyisobutene in mineral oil wherein the polyisobutene has an average molecular weight of about 10 ⁇ .
  • Sample D is similar to sample A in that no hydrocarbon polymer is present. However, the concentration of thickener 1, a low molecular weight hydrocarbon polymer, approximately is doubled in sample D relative to that in sample A. The weld load with sample D was slightly lower than with sample A, thereby demonstrating that thickener 1, even in high concentrations, does not enhance the EP performance of the samples.
  • Samples E, F, G and H are higher viscosity samples, useful for lubricating open gears, wire ropes, cables and other equipment for which an adherent lubricating composition is desirable.
  • sample G is similar to sample F except that the concentration of anti-rust agent is increased from 0.10 wt.% to 0.30 wt.%.
  • the weld load increased from 211 kg (sample F) to 225 kg (sample G).
  • blends L and Q contained a volatile white spirit thinner.
  • a suitable volatile white spirit is available under the trade-name VARSOL 40 and supplied by Esso Petroleum Company.
  • the volatile thinner enables the otherwise grease-like blends to be applied to the surfaces to be lubricated either by brush (or similar applicator) or in the form of an aerosol spray. After application, the volatile white spirit thinner evaporates leaving behind the non-volatile lubricating composition.
  • the white spirit-thinned blends are useful for applying to machine parts which are not easily accessible.
  • the blends (-after evaporation of any white spirit) were sufficiently thick (semi-solid) to be useful for lubricating open gears, cables, wire ropes, chains, etc.
  • Blends I, J, K and L are virtually the same as blends M, N, P and respectively, except that the former include 1.0 wt.% hydrocarbon polymer-solution (of which 6% is polyisobutene of weight average molecular weight of about 1,000,000).
  • Some blends of liquid lubricating compositions were made up using components of the s.ample blends of Examples 1, 2 and 3, but also, in addition, an organic sulfur-containing EP additive.
  • the organic EP additive used for the following samples blends was available under the tradename ANGLAMOL 33, supplied by Lubrizol, .and is believed to be an organic sulfide containing chemically-active sulfur moieties, poossibly of the alkyl sulfide type.
  • the compositions of the sample blends (R, S, T. U) are given in Table 4.
  • Blends T and U were similar to blends R and S respectively, except that the latter contain no hydrocarbon polymer solution while the former each contained 10 g hydrocarbon polymer solution, corresponding to 0.06 wt.% hydrocarbon polymer content.
  • the blends of Table 4 were submitted to standard 4-ball weld and wear tests. The results are given in Table 5.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Abstract

Les performances en capacité de charge et/ou sous des pressions extrêmes ('PE'), d'une composition lubrifiante, sont améliorées par l'addition de la combinaison d'un aditif PE contenant un métal et d'un polymère d'hydrocarbure ayant un poids moléculaire élevé. L'additif PE contenant un métal peut être un composé organique de molybdène et le polymère d'hydrocarbure peut être un polyisobutène dont le poids moléculaire est, de préférence, d'environ un million.
EP96907589A 1995-03-23 1996-03-21 Combinaison d'additifs pour pressions extremes, et lubrifiants la contenant Withdrawn EP0819159A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9505938 1995-03-23
GBGB9505938.2A GB9505938D0 (en) 1995-03-23 1995-03-23 Extreme pressure additive combination and lubricants containing it
PCT/GB1996/000663 WO1996029382A1 (fr) 1995-03-23 1996-03-21 Combinaison d'additifs pour pressions extremes, et lubrifiants la contenant

Publications (1)

Publication Number Publication Date
EP0819159A1 true EP0819159A1 (fr) 1998-01-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96907589A Withdrawn EP0819159A1 (fr) 1995-03-23 1996-03-21 Combinaison d'additifs pour pressions extremes, et lubrifiants la contenant

Country Status (4)

Country Link
EP (1) EP0819159A1 (fr)
CA (1) CA2214354A1 (fr)
GB (1) GB9505938D0 (fr)
WO (1) WO1996029382A1 (fr)

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
NL300930A (fr) * 1962-12-04 1900-01-01
US3933657A (en) * 1974-09-12 1976-01-20 Texaco Inc. Lubricant with synergistic extreme pressure additives
US4075113A (en) * 1975-01-28 1978-02-21 Labofina S.A. Grease composition
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WO1996029382A1 (fr) 1996-09-26
CA2214354A1 (fr) 1996-09-26
GB9505938D0 (en) 1995-05-10

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