EP3504307A1 - Compositions d'huile lubrifiante pour cylindre de moteur diesel marin - Google Patents

Compositions d'huile lubrifiante pour cylindre de moteur diesel marin

Info

Publication number
EP3504307A1
EP3504307A1 EP17762072.1A EP17762072A EP3504307A1 EP 3504307 A1 EP3504307 A1 EP 3504307A1 EP 17762072 A EP17762072 A EP 17762072A EP 3504307 A1 EP3504307 A1 EP 3504307A1
Authority
EP
European Patent Office
Prior art keywords
marine diesel
diesel cylinder
oil composition
aromatic amine
containing aromatic
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.)
Granted
Application number
EP17762072.1A
Other languages
German (de)
English (en)
Other versions
EP3504307B1 (fr
Inventor
Ronald Theodorus Fake Jukes
Corenlis Hedrikus Maria BOONS
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.)
Chevron Oronite Technology BV
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Chevron Oronite Technology BV
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Publication of EP3504307A1 publication Critical patent/EP3504307A1/fr
Application granted granted Critical
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Active 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
    • 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
    • C10M129/04—Hydroxy compounds
    • C10M129/10—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/56—Acids of unknown or incompletely defined constitution
    • 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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M133/12—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to a carbon atom of a six-membered aromatic ring
    • 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
    • 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
    • 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
    • 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
    • C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
    • 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
    • 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
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/062—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings containing hydroxy groups bound to the aromatic ring
    • 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
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • C10M2215/065—Phenyl-Naphthyl 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
    • C10M2215/26—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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/30—Heterocyclic compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—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
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/52—Base number [TBN]
    • 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

Definitions

  • Diesel engines may generally be classified as low-speed, medium-speed, or high-speed engines, with the low-speed variety being used for the largest, deep draft marine vessels and certain other industrial applications such as power generation applications.
  • the cylinders are lubricated on a total loss basis with the cylinder oil being injected separately on each cylinder, often into quills, by means of lubricators positioned around the cylinder liner. Oil is distributed to the lubricators by means of pumps, which are, in modern engine designs, often actuated to apply the oil directly onto the rings to reduce wastage of the oil.
  • the typical use of sulfur-containing fuels for operation of these engines creates the need for lubricants with high detergency and neutralizing capability even though the oils are exposed to thermal and other stresses only for short periods of time.
  • Residual fuels commonly used in these engines can contain significant quantities of sulfur, which, in the combustion process, combine with water to form sulfuric acid, the presence of which leads to corrosive wear.
  • sulfuric acid the presence of which leads to corrosive wear.
  • areas around the cylinder liners and piston rings can be corroded and worn by the acid. Therefore, it is important for diesel engine lubricating oils to have the ability to resist such corrosion and wear.
  • one of the primary functions of a marine diesel cylinder lubricant is to neutralize sulfur-based acidic components of sulfur-containing fuel combusted.
  • This neutralization has typically been accomplished by the inclusion in the marine diesel cylinder lubricant of basic species such as overbased metallic detergents.
  • An oil's neutralization capacity is characterized by its basicity and is measured by its Total Base Number (TBN).
  • the TBN is a standard criterion making it possible to adjust the basicity o the cylinder oils to the sulfur content of the fuel used, in order to be able to neutralize all of the sulfur contained in the fuel.
  • the higher the sulf r content of a fuel the higher the TBN a marine lubricant must have. This is why l ubricating oils having TBNs varying from 5 to 150 mg KOH/g are found in the marine market.
  • the basicity is provided by overbased detergents which are overbased using metallic carbonates.
  • the present invention relates to a marine diesel cylinder lubricant composition, having a source of ashless base, which can ensure good lubrication of the cylinder of a marine engine and can accommodate the constraints of variations in fuel type and fuel sulfur levels.
  • the present in vention further relates to the use of a non-sul fur containing aromatic amine to deliver basicity to a lubricant while reducing and. or limiting detrimental effects.
  • a marine diesel cylinder lubricating oil composition which comprises (a) a major amount of an oil of lubricating viscosity, and (b) a non-sulfur containing aromatic amine having a total base number of from about 100-600 mg KOH/g; wherein the marine diesel cylinder lubricating oil composition has a TBN of about 5 to about 100; and further wherein the TBN contribution of the non-sulfur containing aromatic amine to TBN of the lubricant composition is greater than about 30%.
  • a marine diesel cylinder lubricant composition comprising (a) a major amount of an oil of lubricating viscosity, (b) a non-sulfur containing aromatic amine having a total base number of from about 100-600 mg KOH/g, and (c) one or more polyalkenyl succinimide dispersants, wherein the polyalkenyl substituent is derived from a polyalkene group having a number average molecular weight of from about 1500 to about 3000; wherein the marine diesel cylinder lubricating oil composition has a TBN of about 5 to about 100; and further wherein the TBN contribution of the non-sulfur containing aromatic amine to TBN of the lubricant composition is greater than about 30%.
  • the present invention is based on the surprising discovery that the lubricant composition of this invention advantageously improves oxidation, detergency and dispersancy performance of a marine diesel cylinder lubricating oil composition used in a two-stroke crosshead marine diesel engine. Cylinder oils that have high oxidation stability not in bulk fluid but rather in thin film conditions will exhibit a smaller viscosity increase, and anti-scuffing performance.
  • the invention further relates to the use of a non- sulfur containing aromatic amine, in an amount providing greater than about 30% of the TBN contribution of a marine diesel cylinder lubricant, the use being to reduce the rate of depletion of basicity (loss of BN) as determined by ASTM D2896 and provide ashless TBN to the lubricant composition with relatively little impact on seal material which can be used in the engine lubricating systems or the lubricant handling systems.
  • a non- sulfur containing aromatic amine in an amount providing greater than about 30% of the TBN contribution of a marine diesel cylinder lubricant, the use being to reduce the rate of depletion of basicity (loss of BN) as determined by ASTM D2896 and provide ashless TBN to the lubricant composition with relatively little impact on seal material which can be used in the engine lubricating systems or the lubricant handling systems.
  • non-sulfur containing aromatic amines are an alternative to ash containing over-based metallic detergents, as a source of BN for the lubricant.
  • the present invention therefore relates to a marine diesel cylinder lubricating oil composition which comprises (a) a major amount of an oil of lubricating viscosity, and (b) a non-sulfur containing aromatic amine having a total base number of from about 100- 600 mg KOH/g; wherein the marine diesel cylinder lubricating oil composition has a TBN of about 5 to about 100; and further wherein the TBN contribution of the non-sulfur containing aromatic amine to TBN of the lubricant composition is greater than about 30%.
  • the TBN provided by the non- sulfur containing aromatic amine represents at least 30%, or at least 35%, or at least 40% of the TBN of said marine diesel cylinder lubricant.
  • the marine diesel cylinder lubricant is used for lubrication of a marine 2-stroke engine operated using low sulfur fuel which comprises less than 1.0 wt. % sulfur, or less than 0.5 wt. % sulfur, or less than 0.1 wt. % sulfur.
  • the non-sulfur containing aromatic amine compounds are known as aminic antioxidants which are typically used at lower concentrations in marine diesel cylinder lubricants, since cylinders are lubricated on a total loss basis with the cylinder oil.
  • aminic antioxidants which may be conveniently used include diary lam ines, alkylated diphenylamines, phenyl-a- naphthylamines. phenyl-(3-naphthylamines and alkylated a-naphthylamines.
  • aminic antioxidants include straight-chain or branched dialkyldiphenylamines such as p.p ' -dinonyl-diphenylamine; p.p'-dioctyl- diphenylamine; p.p'-di-n-methylbenzyl-diphenylamine; N-p-butylphenyl-N-p'- octylphenylamine; monoalkyldiphenylamines, such as m ono -t-bu ty Idi heny 1 am i ne and mono-octyldiphenylamine; bis(dialkylphenyl) amines, such as di-(2,4- diethylphenyl)amine and di(2-cthyl-4-nonylphenyl )amine; alkylphenyl- l - naphthylamines, such as octylphenyl- 1 -n
  • the non -sul fur containing aromatic amine of the present invention will typically hav e TBN, as measured according to standard AS T M D-2896, of about 1 00 to about 600 mg KOH/g, preferably about 100 to about 300 mg KOH g, preferably about 1 00 to about 200 mg KOH/g, preferably about 120 to about 500 mg KOH/g, more preferably about 120 to about 300 mg KOH g and more preferably about 120 to about 250 mg KOH g on an actives, oil free, basis.
  • said one or more non -sulfur containing aromatic amine compounds are present in an amount of at least 1 .0 wt. %, of at least 1 .5 wt.
  • a “residual fuel” refers to a fuel meeting the specification of a residual marine fuel as set forth in the ISO 8217:2010 international standard.
  • a “low sulfur marine fuel” refers to a fuel meeting the specification of a residual marine fuel as set forth in the ISO 8217:2010 specification that, in addition, has about 1.5 wt. % or less, or even about 0.5% wt.% or less, of sulfur, relative to the total weight of the fuel.
  • a “distillate fuel” refers to a fuel meeting the specification of a distillate marine fuel as set forth in the ISO 8217:2010 international standard.
  • a “low sulfur distillate fuel” refers to a fuel meeting the specification of a distillate marine fuel set forth in the ISO 8217:2010 international standard that, in addition, has about 0.1 wt. % or less or even about 0.005 wt. % or less, of sulfur, relative to the total weight of the fuel.
  • Low sulfur gaseous fuel such as liquid natural gas (LNG) predominantly consists of methane, with the balance made up of other hydrocarbons. Methane, which is the main component of LNG, is generally kept in a liquid state.
  • LNG liquid natural gas
  • Total Base Number refers to the level of alkalinity in an oil sample, which indicates the ability of the composition to continue to neutralize corrosive acids, in accordance with ASTM Standard No. D2896 or equivalent procedure.
  • the test measures the change in electrical conductivity, and the results are expressed as mg-KOH/g (the equivalent number of milligrams of KOH needed to neutralize 1 gram of a product). Therefore, a high TBN reflects strongly overbased products and, as a result, a higher base reserve for neutralizing acids.
  • the marine diesel cylinder lubricating oil composition of the present invention can have any TBN that is suitable for use as a marine diesel cylinder lubricant.
  • the TBN of the marine diesel cylinder lubricating oil composition of the present invention is less than about 100 mg-KOH/g.
  • the marine diesel cylinder lubricating oil compositions of this invention can have a kinematic viscosity ranging from about 12.5 to about 26.1 cSt, or about 12.5 to about 21.9, or about 16.3 to about 21.9 cSt at 100°C.
  • the kinematic viscosity of the marine diesel cylinder lubricating oil compositions is measured by ASTM D445.
  • the marine diesel cylinder lubricating oil compositions of the present invention can be prepared by any method known to a person of ordinary skill in the art for making marine diesel cylinder lubricating oil compositions.
  • the ingredients can be added in any order and in any manner. Any suitable mixing or dispersing equipment may be used for blending, mixing or solubilizing the ingredients. The blending, mixing or solubilizing may be carried out with a blender, an agitator, a disperser, a mixer, a homogenizer, a mil, or any other mixing or dispersing equipment known in the art.
  • Suitable natural oils include mineral lubricating oils such as, for example, liquid petroleum oils, solvent-treated or acid-treated mineral lubricating oils of the paraffinic, naphthenic or mixed paraffinic-naphthenic types, oils derived from coal or shale, animal oils, vegetable oils (e.g., rapeseed oils, castor oils and lard oil), and the like.
  • mineral lubricating oils such as, for example, liquid petroleum oils, solvent-treated or acid-treated mineral lubricating oils of the paraffinic, naphthenic or mixed paraffinic-naphthenic types, oils derived from coal or shale, animal oils, vegetable oils (e.g., rapeseed oils, castor oils and lard oil), and the like.
  • Another class of synthetic lubricating oils include, but are not limited to, alkylene oxide polymers, i.e., homopolymers, interpolymers, and derivatives thereof where the terminal hydroxyl groups have been modified by, for example, esterification or etherification.
  • oils are exemplified by the oils prepared through polymerization of ethylene oxide or propylene oxide, the alkyl and phenyl ethers of these polyoxyalkylene polymers (e.g., methyl poly propylene glycol ether having an average molecular weight of 1 ,000, diphenyl ether of polyethylene glycol having a molecular weight of 500-1000, diethyl ether of polypropylene glycol having a molecular weight of 1 ,000-1 ,500, etc.) or mono- and polycarboxylic esters thereof such as, for example, the acetic esters, mixed C 3 - C8 fatty acid esters, or the C13 oxo acid diester of tetraethylene glycol.
  • the alkyl and phenyl ethers of these polyoxyalkylene polymers e.g., methyl poly propylene glycol ether having an average molecular weight of 1 ,000, diphenyl ether of polyethylene glycol having
  • Yet another class of synthetic lubricating oils include, but are not limited to, the esters of dicarboxylic acids e.g., phthalic acid, succinic acid, alkyl succinic acids, alkenyl succinic acids, maleic acid, azelaic acid, suberic acid, sebacic acid, fumaric acid, adipic acid, linoleic acid dimer, malonic acids, alkyl malonic acids, alkenyl malonic acids, etc., with a variety of alcohols, e.g., butyl alcohol, hexyl alcohol, dodecyl alcohol, 2- ethylhexyl alcohol, ethylene glycol, diethylene glycol monoether, propylene glycol, etc.
  • dicarboxylic acids e.g., phthalic acid, succinic acid, alkyl succinic acids, alkenyl succinic acids, maleic acid, azelaic acid, suberic acid, sebacic acid, fuma
  • the oil of lubricating viscosity may be derived from unrefined, refined and rerefined oils, either natural, synthetic or mixtures of two or more of any of these of the type disclosed hereinabove.
  • Unrefined oils are those obtained directly from a natural or synthetic source (e.g., coal, shale, or tar sands bitumen) without further purification or treatment.
  • Examples of unrefined oils include, but are not limited to, a shale oil obtained directly from retorting operations, a petroleum oil obtained directly from distillation or an ester oil obtained directly from an esterification process, each of which is then used without further treatment.
  • Lubricating oil base stocks derived from the hydroisomerization of wax may also be used, either alone or in combination with the aforesaid natural and/or synthetic base stocks.
  • Such wax isomerate oil is produced by the hydroisomerization of natural or synthetic waxes or mixtures thereof over a hydroisomerization catalyst.
  • Natural waxes are typically the slack waxes recovered by the solvent dewaxing of mineral oils; synthetic waxes are typically the wax produced by the Fischer-Tropsch process.
  • the oil of lubricating viscosity is a Group I basestock.
  • a Group I basestock for use herein can be any petroleum derived base oil of lubricating viscosity as defined in API Publication 1509, 16 th Edition, Addendum I, Oct., 2009. API guidelines define a base stock as a lubricant component that may be manufactured using a variety of different processes.
  • Group I base oils generally refer to a petroleum derived lubricating base oil having a saturates content of less than 90 wt.
  • % (as determined by ASTM D 2007) and/or a total sulfur content of greater than 300 ppm (as determined by ASTM D 2622, ASTM D 4294, ASTM D 4297 or ASTM D 3120) and has a viscosity index (VI) of greater than or equal to 80 and less than 120 (as determined by ASTM D 2270).
  • VI viscosity index
  • Group I base oils can comprise light overhead cuts and heavier side cuts from a vacuum distillation column and can also include, for example, Light Neutral, Medium Neutral, and Heavy Neutral base stocks.
  • the petroleum derived base oil also may include residual stocks or bottoms fractions, such as, for example, brightstock.
  • Brightstock is a high viscosity base oil which has been conventionally produced from residual stocks or bottoms and has been highly refined and dewaxed. Brightstock can have a kinematic viscosity greater than about 180 cSt at 40°C, or even greater than about 250 cSt at 40°C, or even ranging from about 500 to about 1 100 cSt at 40°C.
  • the one or more basestocks can be a blend or mixture of two or more, three or more, or even four or more Group I basestocks having different molecular weights and viscosities, wherein the blend is processed in any suitable manner to create a base oil having suitable properties (such as the viscosity and TBN values, discussed above) for use in a marine diesel engine.
  • the one or more basestocks comprises ExxonMobil CORE ® 100, ExxonMobil CORE ® 150, ExxonMobil CORE ® 600, ExxonMobil CORE ® 2500, or a combination or mixture thereof.
  • the oil of lubricating viscosity is a Group II basestock as defined in API Publication 1509, 16 th Edition, Addendum I, Oct., 2009.
  • a Group II basestock generally refer to a petroleum derived lubricating base oil having a total sulfur content equal to or less than 300 parts per million (ppm) (as determined by ASTM D 2622, ASTM D 4294, ASTM D 4927 or ASTM D 3120), a saturates content equal to or greater than 90 weight percent (as determined by ASTM D 2007), and a viscosity index (VI) of between 80 and 120 (as determined by ASTM D 2270).
  • ppm parts per million
  • VI viscosity index
  • the oil of lubricating viscosity is a Group III basestock as defined in API Publication 1509, 16 th Edition, Addendum I, Oct., 2009.
  • a Group III basestock generally has a total sulfur content less than or equal to 0.03 wt.% (as determined by ASTM D 2270), a saturates content of greater than or equal to 90 wt.% (as determined by ASTM D 2007), and a viscosity index (VI) of greater than or equal to 120 (as determined by ASTM D 4294, ASTM D 4297 or ASTM D 3120).
  • the basestock is a Group III basestock, or a blend of two or more different Group III basestocks.
  • Group III basestocks derived from petroleum oils are severely hydrotreated mineral oils. Hydrotreating involves reacting hydrogen with the basestock to be treated to remove heteroatoms from the hydrocarbon, reduce olefins and aromatics to alkanes and cycloparaffins respectively, and in very severe hydrotreating, open up naphthenic ring structures to non-cyclic normal and iso-alkanes ("paraffins").
  • a Group III basestock has a paraffinic carbon content (% C p ) of at least about 70 %, as determined by test method ASTM D 3238-95 (2005), "Standard Test Method for Calculation of Carbon Distribution and Structural Group Analysis of Petroleum Oils by the n-d-M Method".
  • a Fischer Tropsch base oil can be produced from a process in which the feed is a waxy feed recovered from a Fischer-Tropsch synthesis, see, e.g., U.S. Patent Application Publication Nos. 2004/0159582; 2005/0077208; 2005/0133407; 2005/0133409; 2005/0139513; 2005/0139514; 2005/0241990 each of which are incorporated herein by reference.
  • the process involves a complete or partial hydroisomerization dewaxing step, employing a dual-functional catalyst or a catalyst that can isomerize paraffins selectively.
  • Hydroisomerization dewaxing is achieved by contacting the waxy feed with a hydroisomerization catalyst in an isomerization zone under hydroisomerizing conditions.
  • the marine cylinder lubricants for use in marine diesel engines typically have a kinematic viscosity in the range of 9.3 to 26.1 cSt at 100°C.
  • a brightstock may be combined with a low viscosity oil, e.g., an oil having a viscosity from 4 to 6 cSt at 100°C.
  • supplies of brightstock are dwindling and therefore brightstock cannot be relied upon to increase the viscosity of marine cylinder lubricants to the desired ranges that manufacturers recommend.
  • PIB polyisobutylene
  • viscosity index improvers such as olefin copolymers
  • PIB is a commercially available material from several manufacturers.
  • the PIB is typically a viscous oil-miscible liquid, having a weight average molecular weight in the range of about 1,000 to about 8,000, or from about 1,500 to about 6,000, and a viscosity in the range of about 2,000 to about 5,000 or about 6,000 cSt (100°C).
  • the amount of PIB added to the marine cylinder lubricants will normally be from about 1 to about 20 wt.
  • the marine diesel cylinder lubricating oil composition of the present invention further includes one or more polyalkenyl bis-succinimide dispersants wherein the polyalkenyl substituent is derived from a polyalkene group having a number average molecular weight of from about 1500 to about 3000.
  • a bis- succinimide is the completed reaction product from the reaction between a polyalkenyl- substituted succinic acid or anhydride and one or more polyamine reactants, and is intended to encompass compounds wherein the product may have amide, amidine, and/or salt linkages in addition to the imide linkage of the type that results from the reaction of a primary amino group and anhydride moiety.
  • the bis-succinimide dispersants is prepared according to methods that are well known in the art, e.g., certain fundamental types of succinimides and related materials encompassed by the term of art "succinimide" are taught in, for example, U.S. Pat. Nos. 2,992,708; 3,018,291; 3,024,237; 3,100,673; 3,219,666; 3,172,892; and 3,272,746, the content of which are hereby incorporated by reference.
  • the one or more polyalkenyl bis-succinimide dispersants can be obtained by reacting a polyalkenyl-substituted succinic anhydride of formula I:
  • R is a polyalkenyl substituent is derived from a polyalkene group having a number average molecular weight of from about 1500 to about 3000 with a polyamine.
  • R is a polyalkenyl substituent is derived from a polyalkene group having a number average molecular weight of from about 1500 to about 2500.
  • R is a polybutenyl substituent derived from a polybutene having a number average molecular weight of from about 1500 to about 3000.
  • R is a polybutenyl substituent derived from a polybutene having a number average molecular weight of from about 1500 to about 2500.
  • the preparation of the polyalkenyl-substituted succinic anhydride by reaction with a polyolefin and maleic anhydride has been described in, e.g., U.S. Pat. Nos. 3,018,250 and 3,024, 195.
  • Such methods include the thermal reaction of the polyolefin with maleic anhydride and the reaction of a halogenated polyolefin, such as a chlorinated polyolefin, with maleic anhydride.
  • Reduction of the polyalkenyl-substituted succinic anhydride yields the corresponding alkyl derivative.
  • the polyalkenyl substituted succinic anhydride may be prepared as described in, e.g., U.S. Pat. Nos. 4,388,471 and 4,450,281 , the contents of which are incorporated by reference herein.
  • the size of the polyalkenyl substituent is advantageously one that is derived from a polyalkene group having a number average molecular weight of about 1500 to about 3000. In one embodiment, the size of the polyalkenyl substituent is advantageously one that is derived from a polyalkene group having a number average molecular weight of about 1500 to 2500. In another embodiment, the size of the polyalkenyl substituent is advantageously one that is derived from a polyalkene group having a number average molecular weight of about 2300.
  • Polyalkene groups having a number average molecular weight of from about 1500 to about 3000 for reaction with a succinic anhydride such as maleic anhydride are polymers comprising a major amount of C 2 to Cs mono-olefin, e.g., ethylene, propylene, butylene, isobutylene and pentene.
  • the polymers can be homopolymers such as polyisobutylene as well as copolymers of 2 or more such olefins such as copolymers of: ethylene and propylene, butylene, and isobutylene, etc.
  • copolymers include those in which a minor amount of the copolymer monomers, e.g., 1 to 20 mole percent is a C4 to Cs nonconjugated diolefin, e.g., a copolymer of isobutylene and butadiene or a copolymer of ethylene, propylene and 1 ,4-hexadiene, etc.
  • a minor amount of the copolymer monomers e.g., 1 to 20 mole percent is a C4 to Cs nonconjugated diolefin, e.g., a copolymer of isobutylene and butadiene or a copolymer of ethylene, propylene and 1 ,4-hexadiene, etc.
  • a particularly preferred class of polyalkene groups having a number average molecular weight of from about 1500 to about 3000 include polybutenes, which are prepared by polymerization of one or more of 1 -butene, 2-butene and isobutene. Especially desirable are polybutenes containing a substantial proportion of units derived from isobutene. The polybutene may contain minor amounts of butadiene which may or may not be incorporated in the polymer. Most often the isobutene units constitute about 80%, or at least about 90%, of the units in the polymer. These polybutenes are readily available commercial materials well known to those skilled in the art, e.g., those described in, for example, U.S. Pat. Nos. 3,215,707; 3,231 ,587; 3,515,669; 3,579,450, and 3,912,764, the contents of which are incorporated by reference herein.
  • Suitable polyamines for use in preparing the non-borated bis-succinimide dispersants include polyalkylene polyamines. Such polyalkylene polyamines will typically contain about 2 to about 12 nitrogen atoms and about 2 to 24 carbon atoms. Particularly suitable polyalkylene polyamines are those having the formula: H2N-(R 1 NH) C -H wherein R 1 is a straight- or branched-chain alkylene group having 2 or 3 carbon atoms and c is 1 to 9.
  • suitable polyalkylene polyamines include ethylenediamine, diethylenetriamine, triethylenetetraamine, tetraethylenepentamine and mixtures thereof. Most preferably, the polyalkylene polyamine is tetraethylenepentamine.
  • the concentration of the one or more polyalkenyl bis-succinimide dispersants wherein the polyalkenyl substituent is derived from apolyalkene group having a number average molecular weight of from about 1500 to about 3000 in a marine diesel cylinder lubricating oil composition of the present invention is greater than about 0.25 wt. %, or greater than about 0.5 wt. %, or greater than about 1.0 wt. %, or greater than about 1.2 wt. %, or greater than about 1.5 wt. %, or greater than about 1.8 wt. %, or greater than about 2.0 wt. %, or greater than about 2.5 wt. %, or greater than about 2.8 wt.
  • % or about 1.5 to 3.0 wt. %, or about 2.0 to 10 wt. %, or about 2.0 to 8.0 wt. %, or about 2.0 to 5.0 wt. % or about 2.0 to 4.0 wt. % on an active basis, based on the total weight of the marine diesel cylinder lubricating oil composition.
  • the polyalkenyl-substituted succinic anhydride can be a polyalkenyl-substituted succinic anhydride wherein the polyalkenyl substituent is derived from a polyalkene having a number average molecular weight of from about 500 to about 5000.
  • the polyalkenyl-substituted succinic anhydride according to the present embodiment can be a polyalkenyl-substituted succinic anhydride wherein the polyalkenyl substituent is derived from a polyalkene having a number average molecular weight of from about 700 to about 3000.
  • the polyalkenyl- substituted succinic anhydride according to the present embodiment can be a polyalkenyl- substituted succinic anhydride wherein the polyalkenyl substituent is derived from a polyalkene having a number average molecular weight of from about 1000 to about 3000.
  • the polyalkenyl-substituted succinic anhydride according to the present embodiment can be a polyalkenyl-substituted succinic anhydride wherein the polyalkenyl substituent is derived from a polyalkene having a number average molecular weight of from about 1300 to about 2500.
  • the polyalkenyl bis-succinimide dispersants of this embodiment is post- treated with a cyclic carbonate to form a cyclic carbonate post-treated polyalkenyl bis- succinimide dispersants.
  • Suitable cyclic carbonates for use in this invention include, but are not limited to, l ,3-dioxolan-2-one (ethylene carbonate): 4-methyl-l ,3-dioxolan-2-one (propylene carbonate); 4-hydroxymethyl-l ,3-dioxolan-2-one: 4,5-dimethyl-l ,3-dioxolan- 2-one; 4-ethyl-l ,3-dioxolan-2-one (butylene carbonate) and the like.
  • the amount of the antioxidant may vary from about 0.01 wt. % to about 10 wt. %, from about 0.05 wt. % to about 5 wt. %, or from about 0.1 wt. % to about 3 wt. %, based on the total weight of the marine diesel cylinder lubricating oil composition.
  • Overbased metal detergents are generally produced by carbonating a mixture of hydrocarbons, detergent acid, for example: sulfonic acid, carboxylate etc., metal oxide or hydroxides (for example calcium oxide or calcium hydroxide) and promoters such as xylene, methanol and water.
  • detergent acid for example: sulfonic acid, carboxylate etc.
  • metal oxide or hydroxides for example calcium oxide or calcium hydroxide
  • promoters such as xylene, methanol and water.
  • the calcium oxide or hydroxide reacts with the gaseous carbon dioxide to form calcium carbonate.
  • the sulfonic acid is neutralized with an excess of CaO or Ca(OH)2, to form the sulfonate.
  • Overbased detergents may be low overbased, e.g., an overbased salt having a BN below 100.
  • the BN of a low overbased salt may be from about 5 to about 50. In another embodiment, the BN of a low overbased salt may be from about 10 to about 30. In yet another embodiment, the BN of a low overbased salt may be from about 15 to about 20.
  • Overbased detergents may be medium overbased, e.g., an overbased salt having a BN from about 100 to about 250.
  • the BN of a medium overbased salt may be from about 100 to about 200.
  • the BN of a medium overbased salt may be from about 125 to about 175.
  • Overbased detergents may be high overbased, e.g., an overbased salt having a BN above 250.
  • the BN of a high overbased salt may be from about 250 to about 550.
  • the detergent can be one or more alkali or alkaline earth metal salts of an alkyl-substituted hydroxyaromatic carboxylic acid.
  • Suitable hydroxyaromatic compounds include mononuclear monohydroxy and polyhydroxy aromatic hydrocarbons having 1 to 4, and preferably 1 to 3, hydroxyl groups.
  • Suitable hydroxyaromatic compounds include phenol, catechol, resorcinol, hydroquinone, pyrogallol, cresol, and the like.
  • the preferred hydroxyaromatic compound is phenol.
  • the mixture of linear olefins that may be used is a mixture of normal alpha olefins selected from olefins having from about 12 to about 30 carbon atoms per molecule.
  • the normal alpha olefins are isomerized using at least one of a solid or liquid catalyst.
  • the olefins are a branched olefinic propylene oligomer or mixture thereof having from about 20 to about 80 carbon atoms, i.e., branched chain olefins derived from the polymerization of propylene.
  • the olefins may also be substituted with other functional groups, such as hydroxy groups, carboxylic acid groups, heteroatoms, and the like.
  • the branched olefinic propylene oligomer or mixtures thereof have from about 20 to about 60 carbon atoms.
  • the branched olefinic propylene oligomer or mixtures thereof have from about 20 to about 40 carbon atoms.
  • the alkali or alkaline earth metal salt of an alkyl-substituted hydroxyaromatic carboxylic acid is an alkali or alkaline earth metal salt of an alkyl- substituted hydroxybenzoic acid that is derived from an alkyl-substituted hydroxybenzoic acid in which the alkyl groups are the residue of normal alpha-olefins containing at least 75 mole% C20 or higher normal alpha-olefins.
  • At least about 50 mole % (e.g., at least about 60 mole %, at least about 70 mole %, at least about 80 mole %, at least about 85 mole %, at least about 90 mole %, at least about 95 mole %, or at least about 99 mole %) of the alkyl groups contained within the alkali or alkaline earth metal salt of an alkyl-substituted hydroxyaromatic carboxylic acid such as the alkyl groups of an alkali or alkaline earth metal salt of an alkyl-substituted hydroxybenzoic acid are about Ci 4 to about Ci8.
  • Sulfonates may be prepared from sulfonic acids which are typically obtained by the sulfonation of alkyl substituted aromatic hydrocarbons such as those obtained from the fractionation of petroleum or by the alkylation of aromatic hydrocarbons. Examples included those obtained by alkylating benzene, toluene, xylene, naphthalene, diphenyl or their halogen derivatives.
  • the alkylation may be carried out in the presence of a catalyst with alkylating agents having from about 3 to more than 70 carbon atoms.
  • the alkaryl sulfonates usually contain from about 9 to about 80 or more carbon atoms, preferably from about 16 to about 60 carbon atoms per alkyl substituted aromatic moiety.
  • high overbased sulfonate detergents delivers no more than 50 percent of the TBN of the overall composition. In other embodiments, the high overbased sulfonate detergents delivers no more than 40 percent, 30 percent, 25 percent, 10 percent or 5 percent of the TBN of the overall composition. In still other embodiments the compositions of the present invention are substantially free of high overbased sulfonate detergents such that high overbased sulfonate detergents deliver no more than 0.5 percent of the TBN of the overall composition, or even 0 percent of the of the TBN of the overall composition.
  • Metal salts of phenols and sulfurized phenols which are sulfurized phenate detergents, are prepared by reaction with an appropriate metal compound such as an oxide or hydroxide and neutral or overbased products may be obtained by methods well known in the art.
  • Sulfurized phenols may be prepared by reacting a phenol with sulfur or a sulfur containing compound such as hydrogen sulfide, sulfur monohalide or sulfur dihalide, to form products which are generally mixtures of compounds in which 2 or more phenols are bridged by sulfur containing bridges.
  • the sulfur can be employed either as molten sulfur or as a solid (e.g., powder or particulate) or as a solid suspension in a compatible hydrocarbon liquid.
  • calcium hydroxide As the calcium base because of its handling convenience versus, for example, calcium oxide, and also because it affords excellent results.
  • Other calcium bases can also be used, for example, calcium alkoxides.
  • Suitable alkylphenols which can be used are those wherein the alkyl substituents contain a sufficient number of carbon atoms to render the resulting overbased sulfurized calcium alkylphenate composition oil-soluble. Oil solubility may be provided by a single long chain alkyl substitute or by a combination of alkyl substituents.
  • the alkylphenol used in the present process will be a mixture of different alkylphenols, e.g., C20 to C24 alkylphenol. Where phenate products having a TBN of 275 or less are desired, it is economically advantageous to use 100% polypropenyl substituted phenol because of its commercial availability and generally lower costs.
  • about 25 to about 100 mole percent of the alkylphenol can have straight-chain alkyl substituent of from about 15 to about 35 carbon atoms and from about 75 to about 0 mole percent in which the alkyl group is polypropenyl of from 9 to 18 carbon atoms.
  • the alkyl group will be a straight-chain alkyl of about 15 to about 35 carbon atoms and about from about 65 to 0 mole percent of the alkylphenol, the alkyl group will be polypropenyl of from about 9 to about 18 carbon atoms.
  • suitable alkyl phenolic compounds comprise distilled cashew nut shell liquid or hydrogenated distilled cashew nut shell liquid.
  • Distilled CNSL is a mixture of biodegradable mcta-hydrocarbyl substituted phenols, where the hydrocarbyl group is linear and unsaturated, including cardanol. Catalytic hydrogenation of distilled CNSL gives rise to a mixture of mcta- hydrocarbyl substituted phenols predominantly rich in 3-pen tadecy 1 phenol.
  • the alkylphenols can be para-alkylphenols, meta-alkylphenols or ortho alkylphenols. Since it is believed that p-alkylphenols facilitate the preparation of highly overbased calcium sulfurized alkylphenate where overbased products are desired, the alkylphenol is preferably predominantly a para alkylphenol with no more than about 45 mole percent of the alkylphenol being ortho alkylphenols; and more preferably no more than about 35 mole percent of the alkylphenol is ortho alkylphenol. Alkyl-hydroxy toluenes or xylenes, and other alkyl phenols having one or more alkyl substituents in addition to at least one long chained alkyl substituent can also be used. In the case of distilled cashew nut shell liquid, the catalytic hydrogenation of distilled CNSL gives rise to a mixture of nieta-hydrocarbyl substituted phenols.
  • the selection of alkylphenols can be based on the properties desired for the marine diesel engine lubricating oil compositions, notably TBN, and oil solubility.
  • the viscosity of the alkylphenate composition can be influenced by the position of an attachment on alkyl chain to the phenyl ring, e.g., end attachment versus middle attachment. Additional information regarding this and the selection and preparation of suitable alkylphenols can be found, for example, in U.S. Pat. Nos. 5,024,773, 5,320,763; 5,318,710; and 5,320,762, each of which are incorporated herein by reference.
  • the amount of the detergent can be from about 0.001 wt. % to about 50 wt. %, or from about 0.05 wt. % to about 25 wt. %, or from about 0.1 wt. % to about 20 wt. %, or from about 0.01 to 15 wt. % based on the total weight of the marine diesel cylinder lubricating oil composition.
  • the marine diesel cylinder lubricating oil composition of the present invention can contain one or more friction modifiers that can lower the friction between moving parts. Any friction modifier known by a person of ordinary skill in the art may be used in the marine diesel cylinder lubricating oil composition.
  • suitable friction modifiers include fatty carboxylic acids; derivatives (e.g., alcohol, esters, borated esters, amides, metal salts and the like) of fatty carboxylic acid; mono-, di- or tri- alkyl substituted phosphoric acids or phosphonic acids; derivatives (e.g., esters, amides, metal salts and the like) of mono-, di- or tri-alkyl substituted phosphoric acids or phosphonic acids; mono-, di- or tri-alkyl substituted amines; mono- or di-alkyl substituted amides and combinations thereof.
  • examples of friction modifiers include, but are not limited to, alkoxylated fatty amines; borated fatty epoxides; fatty phosphites, fatty epoxides, fatty amines, borated alkoxylated fatty amines, metal salts of fatty acids, fatty acid amides, glycerol esters, borated glycerol esters; and fatty imidazolines as disclosed in U.S. Patent No.
  • friction modifiers obtained from a reaction product of a C4 to C75, or a C 6 to C24, or a C 6 to C20, fatty acid ester and a nitrogen-containing compound selected from the group consisting of ammonia, and an alkanolamine and the like and mixtures thereof.
  • the marine diesel cylinder lubricating oil composition of the present invention can contain one or more anti-wear agents that can reduce friction and excessive wear.
  • Any anti-wear agent known by a person of ordinary skill in the art may be used in the lubricating oil composition.
  • suitable anti-wear agents include zinc dithiophosphate, metal (e.g., Pb, Sb, Mo and the like) salts of dithiophosphates, metal (e.g., Zn, Pb, Sb, Mo and the like) salts of dithiocarbamates, metal (e.g., Zn, Pb, Sb and the like) salts of fatty acids, boron compounds, phosphate esters, phosphite esters, amine salts of phosphoric acid esters or thiophosphoric acid esters, reaction products of dicyclopentadiene and thiophosphoric acids and combinations thereof.
  • the anti-wear agent is or comprises a dihydrocarbyl dithiophosphate metal salt, such as zinc dialkyl dithiophosphate compounds.
  • the metal of the dihydrocarbyl dithiophosphate metal salt may be an alkali or alkaline earth metal, or aluminum, lead, tin, molybdenum, manganese, nickel or copper. In some embodiments, the metal is zinc.
  • the alkyl group of the dihydrocarbyl dithiophosphate metal salt has from about 3 to about 22 carbon atoms, from about 3 to about 18 carbon atoms, from about 3 to about 12 carbon atoms, or from about 3 to about 8 carbon atoms. In further embodiments, the alkyl group is linear or branched.
  • the amount of the dihydrocarbyl dithiophosphate metal salt including the zinc dialkyl dithiophosphate salts in the lubricating oil composition disclosed herein is measured by its phosphorus content.
  • the phosphorus content of the lubricating oil composition disclosed herein is from about 0.01 wt. % to about 0.14 wt., based on the total weight of the lubricating oil composition.
  • the marine diesel cylinder lubricating oil composition of the present invention can contain one or more foam inhibitors or anti-foam inhibitors that can break up foams in oils.
  • Any foam inhibitor or anti-foam known by a person of ordinary skill in the art may be used in the marine diesel cylinder lubricating oil composition.
  • suitable foam inhibitors or anti-foam inhibitors include silicone oils or polydimethylsiloxanes, fiuorosilicones, alkoxylated aliphatic acids, polyethers (e.g., polyethylene glycols), branched polyvinyl ethers, alkyl acrylate polymers, alkyl methacrylate polymers, polyalkoxyamines and combinations thereof.
  • the marine diesel cylinder lubricating oil composition of the present invention can contain one or more pour point depressants that can lower the pour point of the marine diesel cylinder lubricating oil composition.
  • Any pour point depressant known by a person of ordinary skill in the art may be used in the marine diesel cylinder lubricating oil composition.
  • suitable pour point depressants include polymethacrylates, alkyl acrylate polymers, alkyl methacrylate polymers, di(tetra-paraffin phenol)phthalate, condensates of tetra-paraffin phenol, condensates of a chlorinated paraffin with naphthalene and combinations thereof.
  • the pour point depressant comprises an ethylene -vinyl acetate copolymer, a condensate of chlorinated paraffin and phenol, polyalkyl styrene or the like.
  • the marine diesel cylinder lubricating oil composition of the present invention can contain one or more demulsifiers that can promote oil-water separation in lubricating oil compositions that are exposed to water or steam. Any demulsifier known by a person of ordinary skill in the art may be used in the marine diesel cylinder lubricating oil composition.
  • demulsifiers include anionic surfactants (e.g., alkyl-naphthalene sulfonates, alkyl benzene sulfonates and the like), nonionic alkoxylated alkyl phenol resins, polymers of alkylene oxides (e.g., polyethylene oxide, polypropylene oxide, block copolymers of ethylene oxide, propylene oxide and the like), esters of oil soluble acids, polyoxyethylene sorbitan ester and combinations thereof.
  • anionic surfactants e.g., alkyl-naphthalene sulfonates, alkyl benzene sulfonates and the like
  • nonionic alkoxylated alkyl phenol resins e.g., polymers of alkylene oxides (e.g., polyethylene oxide, polypropylene oxide, block copolymers of ethylene oxide, propylene oxide and the like), esters of oil soluble acids, polyoxyethylene sorbitan
  • the marine diesel cylinder lubricating oil composition of the present invention can contain one or more corrosion inhibitors that can reduce corrosion. Any corrosion inhibitor known by a person of ordinary skill in the art may be used in the marine diesel cylinder lubricating oil composition.
  • suitable corrosion inhibitor include half esters or amides of dodecylsuccinic acid, phosphate esters, thiophosphates, alkyl imidazolines, sarcosines and combinations thereof.
  • the marine diesel cylinder lubricating oil composition of the present invention can contain one or more extreme pressure (EP) agents that can prevent sliding metal surfaces from seizing under conditions of extreme pressure.
  • EP extreme pressure
  • Any extreme pressure agent known by a person of ordinary skill in the art may be used in the marine diesel cylinder lubricating oil composition.
  • the extreme pressure agent is a compound that can combine chemically with a metal to form a surface film that prevents the welding of asperities in opposing metal surfaces under high loads.
  • Non-limiting examples of suitable extreme pressure agents include sulfurized animal or vegetable fats or oils, sulfurized animal or vegetable fatty acid esters, fully or partially esterified esters of trivalent or pentavalent acids of phosphorus, sulfurized olefins, dihydrocarbyl polysulfides, sulfurized Diels-Alder adducts, sulfurized dicyclopentadiene, sulfurized or co-sulfurized mixtures of fatty acid esters and monounsaturated olefins, co-sulfurized blends of fatty acid, fatty acid ester and alpha-olefin, functionally-substituted dihydrocarbyl polysulfides, thia-aldehydes, thia-ketones, epithio compounds, sulfur-containing acetal derivatives, co- sulfurized blends of terpene and acyclic olefins, and polysulfide olefin products, amine salts of phosphoric acid est
  • the marine diesel cylinder lubricating oil composition of the present invention can contain one or more rust inhibitors that can inhibit the corrosion of ferrous metal surfaces. Any rust inhibitor known by a person of ordinary skill in the art may be used in the marine diesel cylinder lubricating oil composition.
  • Non-limiting examples of suitable rust inhibitors include nonionic polyoxyalkylene agents, e.g., polyoxy ethylene lauryl ether, polyoxyethylene higher alcohol ether, polyoxyethylene nonylphenyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene octyl stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene sorbitol monostearate, polyoxyethylene sorbitol monooleate, and polyethylene glycol monooleate; stearic acid and other fatty acids; dicarboxylic acids; metal soaps; fatty acid amine salts; metal salts of heavy sulfonic acid; partial carboxylic acid ester of polyhydric alcohol; phosphoric esters; (short-chain) alkenyl succinic acids; partial esters thereof and nitrogen-containing derivatives thereof; synthetic alkarylsulfonates, e.g., metal dinonylnaphthalene sulfonates
  • the marine diesel cylinder lubricating oil composition of the present invention can contain one or more multifunctional additives.
  • suitable multifunctional additives include sulfurized oxymolybdenum dithiocarbamate, sulfurized oxymolybdenum organophosphorodithioate, oxymolybdenum monoglyceride, oxymolybdenum diethylate amide, amine-molybdenum complex compound, and sulfur- containing molybdenum complex compound.
  • the DSC oxidation test is used to evaluate thin film oxidation stability of test oils, in accordance with ASTM D-6186. Heat flow to and from test oil in a sample cup is compared to a reference cup during the test.
  • the Oxidation Onset Temperature is the temperature at which the oxidation of the test oil starts.
  • the Oxidation Induction Time is the time at which the oxidation of the test oil starts. A higher oxidation induction time means better performance.
  • the oxidation reaction results in an exothermic reaction which is clearly shown by the heat flow.
  • the Oxidation Induction Time is calculated to evaluate the thin film oxidation stability of the test oil.
  • Example 1 and Comparative Example A were formulated to 25 BN, SAE 50 viscosity grade fully formulated marine cylinder lubricating oil compositions comprising majority amount of Esso 600N Group I base oil, Esso 2500 brightstock, a non-sulfur containing aromatic amine, foam inhibitor and additional additiv es as indicated in Table 1 .
  • the non-sulfur containing aromatic amine used in the examples was a nonyl substituted diphenylamine.
  • This additive contained 3.5 wt. % Nitrogen, had a TBN of about 1 35 mgKOH/g and no diluent oil.
  • the test oils were ev compacted using the DSC Oxidation Test. The results are set forth in Table 1 below.
  • Oil concentrate of a high overbased calcium sulfonate having a TBN of 420 mg OH/g Combination of an oil concentrate of a medium overbased calcium salicylate having a TBN of 150 mg KOH/g and an oil concentrate of a medium overbased sulfurized calcium phenate detergent having TBN of 1 16 mg KOH/g
  • Cylinder oils that have high oxidation stability not in bulk fluid but rather in thin film conditions will exhibit a smaller viscosity increase, a high spreadability and greater anti-scuffing performance.

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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 une composition d'huile lubrifiante pour cylindre de moteur diesel marin comprenant une quantité majeure d'une huile de viscosité lubrifiante. La composition d'huile lubrifiante comprend en outre, une amine aromatique ne contenant pas de soufre. La composition d'huile lubrifiante pour cylindre de moteur diesel marin a un indice de base total (TBN) d'environ 5 à environ 100 mg KOH/g. En outre, la contribution de l'amine aromatique non soufrée au TBN de la composition d'huile lubrifiante du cylindre de moteur diesel marin est supérieure à environ 30%.
EP17762072.1A 2016-08-29 2017-08-25 Compositions d'huile lubrifiante pour cylindre de moteur diesel marin Active EP3504307B1 (fr)

Applications Claiming Priority (2)

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US201662380730P 2016-08-29 2016-08-29
PCT/EP2017/071420 WO2018041732A1 (fr) 2016-08-29 2017-08-25 Compositions d'huile lubrifiante pour cylindre de moteur diesel marin

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EP3504307A1 true EP3504307A1 (fr) 2019-07-03
EP3504307B1 EP3504307B1 (fr) 2022-05-11

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EP (1) EP3504307B1 (fr)
JP (1) JP6828166B2 (fr)
KR (1) KR102517043B1 (fr)
CN (1) CN109642175B (fr)
SG (1) SG11201900769RA (fr)
WO (1) WO2018041732A1 (fr)

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FR3097874B1 (fr) * 2019-06-28 2022-01-21 Total Marketing Services Composition lubrifiante pour prévenir la corrosion et/ou la tribocorrosion des pièces métalliques dans un moteur

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KR20190040507A (ko) 2019-04-18
WO2018041732A1 (fr) 2018-03-08
KR102517043B1 (ko) 2023-04-04
SG11201900769RA (en) 2019-02-27
CN109642175B (zh) 2023-07-18
JP6828166B2 (ja) 2021-02-10
JP2019526698A (ja) 2019-09-19
CN109642175A (zh) 2019-04-16
EP3504307B1 (fr) 2022-05-11
US20180057765A1 (en) 2018-03-01

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