EP0396730A1 - Lubricant method and compositions - Google Patents
Lubricant method and compositionsInfo
- Publication number
- EP0396730A1 EP0396730A1 EP90900230A EP90900230A EP0396730A1 EP 0396730 A1 EP0396730 A1 EP 0396730A1 EP 90900230 A EP90900230 A EP 90900230A EP 90900230 A EP90900230 A EP 90900230A EP 0396730 A1 EP0396730 A1 EP 0396730A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- additive
- composition
- extreme pressure
- wear
- group
- 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.)
- Pending
Links
Classifications
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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
- 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
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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
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/02—Sulfurised compounds
- C10M135/04—Hydrocarbons
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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
- 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
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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
- 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
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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
- C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
- C10M159/12—Reaction products
- C10M159/20—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products
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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
- C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
- C10M159/12—Reaction products
- C10M159/20—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products
- C10M159/22—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products containing phenol radicals
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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
- C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
- C10M159/12—Reaction products
- C10M159/20—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products
- C10M159/24—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products containing sulfonic radicals
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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
- C10M163/00—Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
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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
- 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
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/028—Overbased salts thereof
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/16—Naphthenic acids
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/24—Epoxidised acids; Ester derivatives thereof
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/26—Overbased carboxylic acid salts
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/26—Overbased carboxylic acid salts
- C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/086—Imides
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—Amides; Imides
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
- C10M2219/089—Overbased salts
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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
- 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
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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
- 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
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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
- 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
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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
- 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
- C10M2223/047—Thioderivatives not containing metallic elements
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- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/252—Diesel engines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/252—Diesel engines
- C10N2040/253—Small diesel engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Definitions
- This invention concerns the lubrication of crosshead diesel engines, for example marine slow speed crosshead diesel engines.
- a method of lubricating a crosshead diesel engine comprising lubricating the engine with a lubricant composition comprising a major amount of base oil and minor amounts of an anti-wear additive and of an extreme pressure additive.
- X represents an oxygen or a sulfur atom
- each R which can be the same or different, represents a phenyl, tolyl (e.g. 4-tolyl) or xylyl (e.g. 3,5-xy
- the present invention has enabled good lubrication to be achieved between metal surfaces at elevated temperatures and high contact pressures when compared with lubricant compositions consisting of a base oil containing either the anti-wear additive or the extreme pressure additive.
- Each R preferably represents a phenyl, tolyl (e.g. 4-tolyl) or xylyl (e.g. 3,5-xylyl) group, or a halogenated derivative of such a group.
- the three groups R are conveniently the same.
- anti-wear additives which -can be used with advantage in accordance with the invention are the phosphorothionic acid esters described in British Patent Specification 1018307, and the analogous phosphoric acid esters having an oxygen atom in place of the sulfur atom of these esters.
- Specific anti-wear additives which can be used include tritolylphosphate, trixylylphosphate and triphenylphosphoro-thionate.
- sulfur containing anti-wear additives can also be used, especially those containing zinc, for example zinc dihydrocarbyl dithiophosphates, e.g. primary zinc dialkyl dithiophosphates, secondary alkyl zinc dialkyl dithiophosphates and mixed alkyl-aryl zinc dithiophosphates.
- Zinc dihydrocarbyl dithiophosphates which can be used in accordance with the invention can be prepared as described in U.S. Patent Specification 4377527.
- Preferred extreme pressure additives for use in accordance with the invention are organic sulfides. In order to have extreme pressure properties they will usually contain at least 15% by weight of sulfur. However, the sulfur content of these additives will usually be less than 55% by weight. Particularly preferred extreme pressure additives contain from 35 to 45% by weight of sulfur.
- the organic portion of the organic sulfides can be derived from one or more olefin, and the olefins can be straight or branched chain, or cyclic. Furthermore, the unsaturation can be terminal or internal. Preferably, the olefins contain up to eight carbon atoms. Particularly preferred extreme pressure additives are derived from olefins containing from 3 to 6 carbon atoms.
- Especially preferred organic sulfides which can be used as extreme pressure additives in lubricating compositions of the invention are described in British Patent Specification 1308894 and U.S. Patent Specification 4204969.
- the amount of extreme pressure additive should be sufficient to provide an extreme pressure effect. This will usually be provided by the presence of up to 5.0 percent of the additive based on the total weight of the composition. In general, at least 0.05 percent of an extreme pressure additive will need to be present, and compositions of the invention preferably contain from 0.05 to 2.0, more preferably from 0.1 to 1.5, and advantageously from 0.3 to 1.0 percent by weight of an extreme pressure additive based on the total weight of the composition.
- the amount of anti-wear additive present is preferably based on the amount of extreme pressure additive present.
- the weight ratio of anti-wear additive to extreme pressure additive is preferably from 0.1:1 to 10:1, more preferably from 0.2:1 to 5:1, and advantageously about 0.5:1.
- the relative amounts of these additives is preferably adjusted to provide the compositions with good anti-wear properties under high pressures but without excessive corrosion at elevated temperatures.
- the amounts of anti-wear and extreme- pressure additives present in order to achieve this will often be less than would be expected to provide the compositions with satisfactory low wear at high temperatures based on the known properties of the anti-wear and extreme pressure additives used.
- the base oil which can consist of a mixture of two or more oils, is preferably a hydrocarbon oil, and it can include one or more paraffinic or synthetic oils. In general, it is preferred to use a mixture of oils.
- the viscosity index of the base oil should in general be at least 50, and preferably at least 70, although it will not usually be more than 180, and preferably not more than 130.
- the base oil preferably has a viscosity index of from 95 to 105.
- Compositions used in accordance with the present invention will usually contain other additives, for example overbased additives, e.g. naphthenates, sulfonates, phenates, salicylates or carboxylates. It is generally preferred that the total base number (TBN) of the compositions is at least 40, and more preferably from 70 to 100 (as measured by ASTM D2896 in mg of KOH/g of composition) .
- the TBN of the compositions is preferably not more than 150.
- the viscosity of the compositions is preferably at least 10, and more preferably at least 15 cSt at 100°C.
- the viscosity of the base oil will usually be not more than 35, and preferably not more than 30 cSt at 100°C.
- the viscosity of the oil will be from 17 to 25 cSt at 100°C.
- the lubricant compositions can be prepared by known methods. Thus it is generally convenient first to heat the base oil, usually to a temperature of about 60°C, then to add any overbased additives with stirring, and finally to add the extreme pressure and anti-wear additives, again with stirring, preferably after allowing the mixture to cool. .
- compositions can contain various additives used in the lubricant art, for example dispersants, antioxidants and corrosion inhibitors.
- the lubricant composition produced (TBN 70.6, viscosity index 97, and viscosity 17.2 cSt at 100°C) was then tested on a standard IP 239/85 test Extreme Pressure Properties : Friction and Wear Tests for lubricants : Four-Ball Machine" modified to operate from ambient to 200 Q C, the latter temperature being approximately that at the top of the cylinder liner of a slow speed crosshead diesel engine. The results obtained are shown in the accompanying Table, weld point and initial seizure values being in kg, and scar values in mm.
- the lubricant composition produced (TBN 70.3, viscosity index 98, and viscosity 17.1 cSt at 100°C) was then tested as in Example 1, the results being shown in the accompanying Table.
- Example 2 A composition similar to that produced in Example 1 was prepared using 0.55 parts of tritolyl phosphate and 0.5 part of the sulfurised olefin, the amount of mineral oil being adjusted accordingly. The composition was tested as in Example 1, and the results are shown in the accompanying Table.
- Example 2 A composition similar to that of Example 1 was prepared using 0.25 part of trixylyl phosphate in place of the tritolyl phosphate, the amount of mineral oil being adjusted accordingly.
- the composition was tested as in Example 1, and the results are given in the accompanying Table.
- Example 1 A variety of lubricant compositions was prepared using the method of Example 1 but with the amounts and types of extreme pressure and anti-wear additives shown in the accompanying Table, the amount of mineral oil being adjusted accordingly. The results of the tests carried out as described in Example 1 are also given in the Table.
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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
L'invention concerne la lubrification des moteurs diesel à crosses, par exemple de moteurs diesel marins lents à crosses. La lubrification est effectuée à l'aide d'une composition de lubrifiant comprenant une grande quantité d'huile de base ainsi que des quantités plus faibles d'un additif anti-usure et d'un additif pour pressions extrêmes. On parvient à effectuer une bonne lubrification entre des surfaces métalliques à des températures élevées ainsi qu'à des hautes pressions de contact. Les compositions préférées de l'invention ont un effet synergique, et comprennent un additif anti-usure de formule X=P(OR), dans laquelle X représente un atome d'oxygène ou de soufre, et chaque R, pouvant être identique ou différent, représente un groupe phényle, tolyle ou xylyle, un dérivé halogéné d'un tel groupe, tritolylphosphate, trixylylphosphate ou triphénylphosphorothionate, l'additif pour pressions extrêmes étant un sulfure organique.The invention relates to the lubrication of stick diesel engines, for example slow stick diesel marine engines. Lubrication is carried out using a lubricant composition comprising a large amount of base oil as well as smaller amounts of an antiwear additive and an additive for extreme pressures. Good lubrication is achieved between metallic surfaces at high temperatures as well as at high contact pressures. The preferred compositions of the invention have a synergistic effect, and comprise an anti-wear additive of formula X = P (OR), in which X represents an oxygen or sulfur atom, and each R, which may be identical or different , represents a phenyl, tolyl or xylyl group, a halogenated derivative of such a group, tritolylphosphate, trixylylphosphate or triphenylphosphorothionate, the additive for extreme pressures being an organic sulfide.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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GB8826961 | 1988-11-18 | ||
GB888826961A GB8826961D0 (en) | 1988-11-18 | 1988-11-18 | Lubricant compositions |
Publications (1)
Publication Number | Publication Date |
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EP0396730A1 true EP0396730A1 (en) | 1990-11-14 |
Family
ID=10647054
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP90900230A Pending EP0396730A1 (en) | 1988-11-18 | 1989-11-17 | Lubricant method and compositions |
EP89311907A Expired - Lifetime EP0369804B1 (en) | 1988-11-18 | 1989-11-17 | Lubricant method and compositions |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89311907A Expired - Lifetime EP0369804B1 (en) | 1988-11-18 | 1989-11-17 | Lubricant method and compositions |
Country Status (7)
Country | Link |
---|---|
EP (2) | EP0396730A1 (en) |
AU (1) | AU635232B2 (en) |
DE (1) | DE68927221T2 (en) |
ES (1) | ES2091201T3 (en) |
GB (2) | GB8826961D0 (en) |
GR (1) | GR3021083T3 (en) |
WO (1) | WO1990005767A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6187723B1 (en) * | 1993-09-13 | 2001-02-13 | Exxon Research And Engineering Company | Lubricant composition containing antiwear additive combination |
DE69415817T2 (en) * | 1993-09-13 | 1999-06-10 | Exxon Research Engineering Co | LUBRICANT COMPOSITIONS CONTAINING A COMBINATION OF WEAR PROTECTION ADDITIVES |
DE19509371C2 (en) * | 1994-04-15 | 2000-03-23 | Siemens Ag | Changeable antenna for a magnetic resonance device |
GB9800436D0 (en) * | 1998-01-09 | 1998-03-04 | Exxon Chemical Patents Inc | Marine lubricant compositions |
US6277794B1 (en) | 1998-12-28 | 2001-08-21 | Infineum Usa L.P. | Lubricant compositions |
US6339051B1 (en) * | 1998-06-11 | 2002-01-15 | Mobil Oil Corporation | Diesel engine cylinder oils |
ATE491775T1 (en) * | 1999-09-13 | 2011-01-15 | Infineum Int Ltd | A METHOD OF LUBRICATION FOR TWO-STROKE MARINE DIESEL ENGINES |
EP1085076B1 (en) * | 1999-09-13 | 2010-12-15 | Infineum International Limited | A Method for Lubricating Cylinders of a Two-stroke Diesel Engine |
CA2404834C (en) | 2000-04-05 | 2009-08-11 | Hafsteinn Helgason | Recovery of compounds using a natural adsorbent |
ATE320476T1 (en) | 2000-09-22 | 2006-04-15 | Infineum Int Ltd | DIVING PISTON ENGINE LUBRICATION |
EP1191088B1 (en) * | 2000-09-22 | 2006-03-15 | Infineum International Limited | Trunk piston engine lubrication |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB749678A (en) * | 1952-07-24 | 1956-05-30 | Res And Engineering Company | Lubricating oil composition |
US3254027A (en) * | 1962-04-05 | 1966-05-31 | Sinclair Research Inc | Lubricating oil compositions |
GB1335740A (en) * | 1971-11-27 | 1973-10-31 | Texaco Development Corp | Sulphurization of triisobutylene |
US3899432A (en) * | 1974-06-03 | 1975-08-12 | Chevron Res | All-purpose lubricating oil composition with anti-chatter characteristics for wet disc brakes |
US3997454A (en) * | 1974-07-11 | 1976-12-14 | Chevron Research Company | Lubricant containing potassium borate |
CH620905A5 (en) * | 1976-04-12 | 1980-12-31 | Ciba Geigy Ag | |
US4052324A (en) * | 1976-11-04 | 1977-10-04 | Mobil Oil Corporation | Reaction product of dialkyl alkanephosphonate, substituted imidazoline, and water in lubricant compositions |
CH624142A5 (en) * | 1976-12-23 | 1981-07-15 | Ciba Geigy Ag | Lubricant compositions |
US4137187A (en) * | 1977-08-10 | 1979-01-30 | Chevron Research Company | Antiwear additive and lubricating oil composition containing same |
EP0032281B1 (en) * | 1980-01-15 | 1984-04-04 | Edwin Cooper Inc. | A process for making an extreme pressure lubricating oil additive |
US4431552A (en) * | 1982-11-26 | 1984-02-14 | Chevron Research Company | Lubricant composition containing an alkali-metal borate and a mixture of phosphates, monothiophosphates and dithiophosphates in a critical ratio |
US4517103A (en) * | 1983-04-18 | 1985-05-14 | R. T. Vanderbilt Company, Inc. | Lubricating compositions containing 5,5'-dithiobis(1,3,4-thiadiazole-2-thiol) |
US4534873A (en) * | 1983-09-28 | 1985-08-13 | Clark Gary G | Automotive friction reducing composition |
DE3610205A1 (en) * | 1986-03-26 | 1987-10-01 | Tribol Lubricants Gmbh | LUBRICANTS AND METHOD FOR THE PRODUCTION THEREOF |
US4917809A (en) * | 1986-11-11 | 1990-04-17 | Ciba-Geigy Corporation | High-temperature lubricants |
AU1727088A (en) * | 1987-05-13 | 1988-12-06 | Lubrizol Corporation, The | Gear lubricant compositions |
-
1988
- 1988-11-18 GB GB888826961A patent/GB8826961D0/en active Pending
-
1989
- 1989-11-17 AU AU46530/89A patent/AU635232B2/en not_active Ceased
- 1989-11-17 DE DE68927221T patent/DE68927221T2/en not_active Expired - Fee Related
- 1989-11-17 ES ES89311907T patent/ES2091201T3/en not_active Expired - Lifetime
- 1989-11-17 GB GB8926051A patent/GB2225590B/en not_active Expired - Fee Related
- 1989-11-17 EP EP90900230A patent/EP0396730A1/en active Pending
- 1989-11-17 EP EP89311907A patent/EP0369804B1/en not_active Expired - Lifetime
- 1989-11-17 WO PCT/GB1989/001367 patent/WO1990005767A1/en not_active Application Discontinuation
-
1996
- 1996-09-19 GR GR960402393T patent/GR3021083T3/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9005767A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU635232B2 (en) | 1993-03-18 |
EP0369804B1 (en) | 1996-09-18 |
DE68927221T2 (en) | 1997-02-06 |
GB2225590A (en) | 1990-06-06 |
GB2225590B (en) | 1993-05-19 |
WO1990005767A1 (en) | 1990-05-31 |
GB8926051D0 (en) | 1990-01-10 |
DE68927221D1 (en) | 1996-10-24 |
AU4653089A (en) | 1990-06-12 |
GR3021083T3 (en) | 1996-12-31 |
ES2091201T3 (en) | 1996-11-01 |
GB8826961D0 (en) | 1988-12-21 |
EP0369804A1 (en) | 1990-05-23 |
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Effective date: 19910212 |
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XX | Miscellaneous |
Free format text: VERFAHREN ABGESCHLOSSEN INFOLGE VERBINDUNG MIT 89311907.3/0369804 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) VOM 20.06.91. |