WO1994028094A1 - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
- Publication number
- WO1994028094A1 WO1994028094A1 PCT/US1994/006001 US9406001W WO9428094A1 WO 1994028094 A1 WO1994028094 A1 WO 1994028094A1 US 9406001 W US9406001 W US 9406001W WO 9428094 A1 WO9428094 A1 WO 9428094A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- carbon atoms
- hydrocarbyl group
- composition
- oil composition
- lubricating oil
- Prior art date
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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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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/26—Carboxylic acids; Salts thereof
- C10M129/48—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring
- C10M129/54—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring containing hydroxy groups
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- 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
- C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
- C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
- C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
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- 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
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- 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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- 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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- 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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- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
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- 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
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- C10M2205/06—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
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- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- C10M2207/028—Overbased salts thereof
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- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
- C10M2207/123—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic
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- C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
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- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
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- 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
- C10M2223/042—Metal salts thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/049—Phosphite
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- 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
- C10M2223/10—Phosphatides, e.g. lecithin, cephalin
-
- 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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/046—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
-
- 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
-
- 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
- C10N2040/251—Alcohol fueled engines
-
- 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
- C10N2040/255—Gasoline engines
-
- 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
- C10N2040/255—Gasoline engines
- C10N2040/28—Rotary engines
Definitions
- the present invention relates to a lubricating oil composition, in particular, a lubricating oil composition having improved friction reducing properties and suitable for use as a lubricating oil for internal combustion engines, automatic transmissions, suspensions and power steering wheels, particularly as a lubricating oil for internal combustion engines.
- Lubricating oils are usually used for smoothing the working of internal combustion engines, driving mechanisms such as automatic transmissions, suspensions and power stearings, and gears. Particularly, engine oils are effective in lubricating mainly sliding parts such as a piston ring and a cylinder liner, bearings of a crank shaft or a connecting rod, and valve train including cams and valve lifters; in cooling the engine; in cleaning and dispersing combustion products; and in preventing rust formation and corrosion.
- additives such as an antiwear agent, metallic detergent, ashless dispersant and antioxidant are incorporated into the engine oil in order to satisfy such requirements.
- the lubricating oil is used in combination with additives such as a friction modifier (FM) in order to minimize the friction loss and improve the fuel consumption (see, for example, Japanese Patent Publication No. 23595/1991). Further, since the engine oil for automobiles is used under the various conditions of oil temperature, engine speed and load, more excellent frictional properties under the wide-range conditions of use are necessitated for further improving the fuel consumption.
- FM friction modifier
- the present invention has been completed after investigations made for the purpose of providing a lubricating oil composition having improved friction reducing properties over those of an ordinary lubricating oil containing molybdenum dithiocarbamate and a phosphoric ester, and is suitable for use as a lubricating oil for internal combustion engines, automatic transmissions, suspensions and power steering wheels, particularly as a lubricating oil for internal combustion engines.
- the present invention provides a lubricating oil composition which comprises a base oil containing (A) from 0.01 to 0.8% by weight, based on the whole composition, of at least one compound selected from the group consisting of (a) phosphoric esters of the general formula:
- R 1 , R 2 and R 3 may be the same or different and each represents a hydrogen atom or a hydrocarbyl group having 3 to 23 carbon atoms, with the proviso that at least one of R 1 to R 3 is a hydrocarbyl group having 3 to 23 carbon atoms, and
- R 4 , R 5 and R 6 may be the same or different and each represents a hydrogen atom or a hydrocarbyl group having 3 to 23 carbon atoms, with the proviso that at least one of R 4 to R 6 is a hydrocarbyl group having 3 to 23 carbon atoms;
- the base oil usable as the major component in the lubricating oil composition of the present invention is not particularly limited.
- Base oils are those usually used in ordinary lubricating oils, such as mineral oils and synthetic oils.
- the mineral oils include, for example, 60 neutral oil, 100 neutral oil, 150 neutral oil, 300 neutral oil and 500 neutral oil obtained by solvent refining or hydrorefining; and low-pour point base oils prepared by removing a wax from these base oils so as to improve the low-temperature fluidity. They may be used either singly or in the form of a mixture of two or more of them in a proper ratio.
- the synthetic oils include, for example, poly- ⁇ olefin oligomers, diesters, polyol esters and polyglycol esters. They are usable either singly or in the form of a mixture. They are also usable in the form of a mixture with the above-described mineral oil.
- the blending weight ratio of the synthetic oil to the mineral oil is, for example, 80:20 to 20:80.
- a suitable base oil usable in the composition of the present invention is one having a viscosity in the range of 3 to 20 cSt at 100°C. Particularly preferred are hydrocracked products and/or wax isomerized products containing 3.0% by weight or below of an aromatic component and having a sulfur content of 50 ppm or below and a nitrogen content of 50 ppm below.
- the component (A) is at least one compound selected from the group consisting of a (a) phosphoric ester of the general formula:
- R 1 , R 2 and R 3 are each as defined above, and (b) phosphorous esters of the general formula:
- R 4 , R 5 and R 6 are each as defined above.
- the groups R 1 , R 2 and R 3 in the above general formula [1] may be the same or different and each represents a hydrogen atom or a hydrocarbyl group having 3 to 23 carbon atoms, with the proviso that at least one of R 1 to R 3 is the hydrocarbyl group having 3 to 23 carbon atoms.
- the hydrocarbyl groups having 3 to 23 carbon atoms include linear, branched and cyclic alkyl and alkenyl groups having 3 to 23 carbon atoms, aryl groups having 6 to 23 carbon atoms, alkylaryl groups having 7 to 23 carbon atoms and arylalkyl groups having 7 to 23 carbon atoms.
- Examples include propyl, butyl, pentyl, hexyl, cyclohexyl, octyl, decyl, lauryl, myristyl, palmityl, stearyl, oleyl, eicosyl, phenyl, xylyl, benzyl and phenethyl groups.
- the groups R 4 , R 5 and R 6 in the above general formula [2] for the phosphorous esters may be the same or different and each represents a hydrogen atom or a hydrocarbyl group having 3 to 23 carbon atoms, with the proviso that at least one of R 4 to R 6 is a hydrocarbyl group having 3 to 23 carbon atoms. Examples include those mentioned above with reference to R 1 , R 2 and R 3 in the above general formula [1].
- composition of the present invention may contain phosphoric esters either singly or in combination of two or more of them and/or the phosphorous esters either singly or in combination of two or more of them as the component (A). Further, a combination of one or more of the phosphoric esters with one or more of the phosphorous esters may be also used.
- the composition of the present invention must contain the phosphoric ester and/or phosphorus ester as the component (A) in an amount of 0.01 to 0.8% by weight, preferably 0.05 to 0.5% by weight, based on the whole composition.
- amount of (A) is below 0.01% by weight, no sufficiently low frictional properties can be obtained and, when it exceeds 0.8% by weight, there is no significant further improvement in frictional properties.
- MoDTC sulfurized oxymolybdenum dithiocarbamates
- the groups R 7 and R 8 in the above general formula [3] each represent a hydrocarbyl group having 8 to 18 carbon atoms.
- the hydrocarbyl groups having 8 to 18 carbon atoms include linear and branched alkyl and alkenyl groups having 8 to 18 carbon atoms, and cycloalkyl, aryl, alkylaryl and arylalkyl groups having 8 to 18 carbon atoms. Examples include 2-ethylhexyl, n-octyl, nonyl, decyl, lauryl, tridecyl, palmityl, stearyl, oleyl, eicosyl, butylphenyl and nonyl-phenyl groups.
- R 7 and R y may be the same or different from each other, m and n are positive integers such that the sum of m + n is 4.
- the MoDTC used as component (B) may be used singly or as a combination of two or more of them.
- the amount of MoDTC is in the range of 50 to 2,000 ppm, preferably 100 to 1,000 ppm (in terms of molybdenum) based on the whole composition. When the amount of molybdenum is below 50 ppm, no sufficient friction reduction properties can be obtained and when it is above 2,000 ppm, there is no further significant improvement in the frictional properties.
- a calcium salicylate having a total base number of 10 to 100 is used as the component (C) in the composition of the present invention.
- the calcium salicylate is, for example, one represented by the following general formula:
- the group R 9 in the general formula [4] represents a linear, branched or cyclic alkyl group having 8 to 23 carbon atoms, such as an octyl, nonyl, decyl, dodecyl, pentadecyl, octadecyl or eicosyl group.
- the calcium salicylate used as component (C) may be used either singly or in combination of two or more of them.
- the amount of the calcium salicylate is in the range of 0.3 to 2.5% by weight based on the whole composition. When the amount of (C) is below 0.3% by weight, no sufficient low frictional properties can be obtained and, when the amount exceeds 2.5% by weight, the wear resistance is reduced and the ash content is increased unfavorably.
- the lubricating oil composition of the present invention may contain suitable additives usually incorporated into lubricating oils, such as an ashless detergent-dispersant, viscosity index improver, pour point depressant, antioxidant, rust inhibitor, corrosion inhibitor, antifoaming agent and other antiwear agent and friction modifier, so far as the object of the present invention is not disturbed.
- suitable additives usually incorporated into lubricating oils, such as an ashless detergent-dispersant, viscosity index improver, pour point depressant, antioxidant, rust inhibitor, corrosion inhibitor, antifoaming agent and other antiwear agent and friction modifier, so far as the object of the present invention is not disturbed.
- the ashless detergent-dispersants include, for example, succinimides, succinamides, benzylamines, their boron derivatives and esters. They are used in an amount of usually 0.5 to 7% by weight, based on the whole composition.
- the viscosity index improvers include, for example, polymethacrylates, polyisobutylenes, ethylene/propylene copolymers and hydrogenated styrene/butadiene copolymers. They are used in an amount of from 0.5 to 35% by weight, based on the whole composition.
- the anti-oxidants include, for example, amine antioxidants such as alkylated diphenylamines, phenyl- ⁇ -naphthylamines and alkylated ⁇ -naphthylamines, and phenolic antioxidants such as 2,6-di-t-butyl-4-methyl-phenol and 4,4'-methylenebis(2,6-di-t-butyl-4-methyl-phenol and 4,4'-methylenebis(2,6-di-t-butylphenyl). They are used in an amount of usually 0.05 to 2% by weight, based on the whole composition.
- amine antioxidants such as alkylated diphenylamines, phenyl- ⁇ -naphthylamines and alkylated ⁇ -naphthylamines
- phenolic antioxidants such as 2,6-di-t-butyl-4-methyl-phenol and 4,4'-methylenebis(2,6-di-t-butyl
- the rust inhibitors include, for example, alkenylsuccinic acids and partial esters thereof.
- the corrosion inhibitors include, for example, benzotriazole and benzimidazole.
- the antifoaming agents include, for example, dimethylpolysiloxanes and polyacrylates. They can be suitably incorporated into the oil composition. The following Examples further illustrate the present invention and do not limit the invention.
- the coefficient of friction of the lubricating oil composition was determined as follows:
- the coefficient of friction was determined by the LFW-1 test under the conditions of 270 rpm, 30 kgf, 120°C and 10 minutes.
- Base oil 150N-1 (having viscosity at 100°C of 5.7 mm 2 /s, aromatic component content of 4.1 wt%, sulfur content of 11.0 ppm and nitrogen content of 89.0 ppm) or 150N-2 (having viscosity at 100°C of 5.5 mm 2 /s, aromatic component content of 0.5 wt%, sulfur content of 0.5 ppm and nitrogen content of 0.1 ppm) was used.
- a lubricating oil containing the combination of salicylate, MoDTC and phosphoric ester according to the invention provides a significantly lower coefficient of friction over an oil composition containing any two components.
- the lubricating oil composition of the present invention has superior low frictional properties to those of ordinary lubricating oils comprising MoDTC and a phosphoric ester, and is suitable for use as a lubricating oil for, for example, internal combustion engines, automatic transmissions, suspensions and power steering wheels, particularly as a lubricating oil for internal combustion engines.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69411922T DE69411922T2 (en) | 1993-05-27 | 1994-05-27 | LUBRICATING OIL COMPOSITION |
AU69594/94A AU696014B2 (en) | 1993-05-27 | 1994-05-27 | Lubricating oil composition |
US08/553,288 US5665684A (en) | 1993-05-27 | 1994-05-27 | Lubricating oil composition |
EP94918148A EP0707623B1 (en) | 1993-05-27 | 1994-05-27 | Lubricating oil composition |
CA002163207A CA2163207C (en) | 1993-05-27 | 1994-05-27 | Lubricating oil composition |
NO19954708A NO312680B1 (en) | 1993-05-27 | 1995-11-21 | lubricating oil |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5/148669 | 1993-05-27 | ||
JP5148669A JPH06336593A (en) | 1993-05-27 | 1993-05-27 | Lubricant composition |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994028094A1 true WO1994028094A1 (en) | 1994-12-08 |
Family
ID=15457975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1994/006001 WO1994028094A1 (en) | 1993-05-27 | 1994-05-27 | Lubricating oil composition |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0707623B1 (en) |
JP (1) | JPH06336593A (en) |
AU (1) | AU696014B2 (en) |
CA (1) | CA2163207C (en) |
DE (1) | DE69411922T2 (en) |
NO (1) | NO312680B1 (en) |
WO (1) | WO1994028094A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5627146A (en) * | 1994-12-27 | 1997-05-06 | Asahi Denka Kogyo K.K. | Lubricating oil composition |
EP0783032A1 (en) * | 1995-07-20 | 1997-07-09 | Idemitsu Kosan Company Limited | Lubricating oil composition |
ES2117527A1 (en) * | 1993-12-30 | 1998-08-01 | Cosmo Oil Co Ltd | Power steering fluid composition |
US5916851A (en) * | 1995-12-22 | 1999-06-29 | Japan Energy Corporation | Lubricating oil for internal combustion engine comprising oxymolybdenum dithiocarbamate sulfide |
WO2004013264A1 (en) * | 2002-08-05 | 2004-02-12 | Nippon Oil Corporation | Lubricating oil composition |
WO2004013265A1 (en) * | 2002-08-05 | 2004-02-12 | Nippon Oil Corporation | Lubricating oil composition |
WO2007061698A3 (en) * | 2005-11-18 | 2008-04-03 | Exxonmobil Res & Eng Co | Enhanced deposit control for lubricating oils used under sustained high load conditions |
US7563752B2 (en) | 2002-08-05 | 2009-07-21 | Nippon Oil Corporation | Lubricating oil compositions |
US7625847B2 (en) | 2002-08-05 | 2009-12-01 | Nippon Oil Corporation | Lubricating oil compositions |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4354014B2 (en) * | 1995-10-05 | 2009-10-28 | 出光興産株式会社 | Lubricating oil composition for continuously variable transmission |
JP5097737B2 (en) | 2009-03-27 | 2012-12-12 | 株式会社日立ハイテクノロジーズ | Automatic analyzer and sample dispensing nozzle |
JP5105557B2 (en) * | 2010-04-26 | 2012-12-26 | 東燃ゼネラル石油株式会社 | Lubricating oil composition for internal combustion engines |
JP2010189657A (en) * | 2010-04-26 | 2010-09-02 | Tonengeneral Sekiyu Kk | Lubricating oil composition for internal combustion engine |
JP2013209569A (en) | 2012-03-30 | 2013-10-10 | Jx Nippon Oil & Energy Corp | Lubricating oil composition |
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---|---|---|---|---|
US4171558A (en) * | 1976-09-20 | 1979-10-23 | Idemitsu Kosan Co., Ltd. | Cutting oil composition for processing cemented carbide skiving hob |
US4832867A (en) * | 1987-10-22 | 1989-05-23 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition |
US4849123A (en) * | 1986-05-29 | 1989-07-18 | The Lubrizol Corporation | Drive train fluids comprising oil-soluble transition metal compounds |
US5281347A (en) * | 1989-09-20 | 1994-01-25 | Nippon Oil Co., Ltd. | Lubricating composition for internal combustion engine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5975995A (en) * | 1982-10-25 | 1984-04-28 | Showa Shell Sekiyu Kk | Lubricating composition excellent in resistance to wear and extreme pressure and friction properties |
JPH0662983B2 (en) * | 1986-03-17 | 1994-08-17 | 株式会社豊田中央研究所 | Lubricating oil composition |
JP2602102B2 (en) * | 1989-09-20 | 1997-04-23 | 日本石油株式会社 | Lubricating oil composition for internal combustion engines |
CA2084777A1 (en) * | 1991-05-01 | 1992-11-02 | James N. Vinci | Thermally stable compositions and lubricants and functional fluids containing the same |
-
1993
- 1993-05-27 JP JP5148669A patent/JPH06336593A/en active Pending
-
1994
- 1994-05-27 DE DE69411922T patent/DE69411922T2/en not_active Expired - Fee Related
- 1994-05-27 EP EP94918148A patent/EP0707623B1/en not_active Expired - Lifetime
- 1994-05-27 WO PCT/US1994/006001 patent/WO1994028094A1/en active IP Right Grant
- 1994-05-27 CA CA002163207A patent/CA2163207C/en not_active Expired - Fee Related
- 1994-05-27 AU AU69594/94A patent/AU696014B2/en not_active Ceased
-
1995
- 1995-11-21 NO NO19954708A patent/NO312680B1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4171558A (en) * | 1976-09-20 | 1979-10-23 | Idemitsu Kosan Co., Ltd. | Cutting oil composition for processing cemented carbide skiving hob |
US4849123A (en) * | 1986-05-29 | 1989-07-18 | The Lubrizol Corporation | Drive train fluids comprising oil-soluble transition metal compounds |
US4832867A (en) * | 1987-10-22 | 1989-05-23 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition |
US5281347A (en) * | 1989-09-20 | 1994-01-25 | Nippon Oil Co., Ltd. | Lubricating composition for internal combustion engine |
Non-Patent Citations (1)
Title |
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See also references of EP0707623A4 * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2117527A1 (en) * | 1993-12-30 | 1998-08-01 | Cosmo Oil Co Ltd | Power steering fluid composition |
US5627146A (en) * | 1994-12-27 | 1997-05-06 | Asahi Denka Kogyo K.K. | Lubricating oil composition |
EP0783032A1 (en) * | 1995-07-20 | 1997-07-09 | Idemitsu Kosan Company Limited | Lubricating oil composition |
EP0783032A4 (en) * | 1995-07-20 | 1998-12-23 | Idemitsu Kosan Co | Lubricating oil composition |
US5916851A (en) * | 1995-12-22 | 1999-06-29 | Japan Energy Corporation | Lubricating oil for internal combustion engine comprising oxymolybdenum dithiocarbamate sulfide |
WO2004013264A1 (en) * | 2002-08-05 | 2004-02-12 | Nippon Oil Corporation | Lubricating oil composition |
WO2004013265A1 (en) * | 2002-08-05 | 2004-02-12 | Nippon Oil Corporation | Lubricating oil composition |
CN100462424C (en) * | 2002-08-05 | 2009-02-18 | 新日本石油株式会社 | Lubricating oil compositions |
CN100500818C (en) * | 2002-08-05 | 2009-06-17 | 新日本石油株式会社 | Lubricating oil compositions |
US7563752B2 (en) | 2002-08-05 | 2009-07-21 | Nippon Oil Corporation | Lubricating oil compositions |
US7625847B2 (en) | 2002-08-05 | 2009-12-01 | Nippon Oil Corporation | Lubricating oil compositions |
WO2007061698A3 (en) * | 2005-11-18 | 2008-04-03 | Exxonmobil Res & Eng Co | Enhanced deposit control for lubricating oils used under sustained high load conditions |
Also Published As
Publication number | Publication date |
---|---|
NO954708D0 (en) | 1995-11-21 |
DE69411922D1 (en) | 1998-08-27 |
EP0707623A4 (en) | 1996-09-18 |
CA2163207A1 (en) | 1994-12-08 |
EP0707623A1 (en) | 1996-04-24 |
JPH06336593A (en) | 1994-12-06 |
DE69411922T2 (en) | 1998-12-17 |
CA2163207C (en) | 2002-11-26 |
AU696014B2 (en) | 1998-08-27 |
NO954708L (en) | 1995-11-21 |
NO312680B1 (en) | 2002-06-17 |
AU6959494A (en) | 1994-12-20 |
EP0707623B1 (en) | 1998-07-22 |
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