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
  • C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
  • C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
  • C07F11/00—Compounds containing elements of Groups 6 or 16 of the Periodic Table
  • C07F11/005—Compounds containing elements of Groups 6 or 16 of the Periodic Table compounds without a metal-carbon linkage
• • 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
  • C10M2207/09—Metal enolates, i.e. keto-enol metal complexes
• • 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
• • 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
• • 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
  • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
  • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
  • C10M2227/066—Organic compounds derived from inorganic acids or metal salts derived from Mo or W
• • 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
  • C10N2040/02—Bearings

Definitions

• This invention relates to novel molybdenum compounds having utility as lubricants and as additives therefor, and to lubricating compositions containing such compounds.
• MoS molybdenum disulphide
• lubricating oils containing finely divide molybdenum disulphide in suspension show little advantage under normal conditions over the base oils. This may be due to the fact that molybdenum disulphide is insoluble in mineral oils or esters.
• Oil-soluble compounds containing both molybdenum and sulphur have ben proposed as additives to improve the load carrying properties of lubricants.
• oil-soluble compounds are certain molybdenum a1- kyl xanthates and molybdenum dialkyldithiophosphates.
• Such compounds appear to decompose at the high temperatures and pressures encountered under frictional stress with the deposition of compounds containing molybdenum, sulphur and, usually, oxygen, e.g., M005 and M00 8.
• the solid lubricating properties of these latter compounds are not as good as those of molybdenum disulphide.
• the invention therefore, according to one aspect, consists in novel compounds of the general formula i! 0 S S (Formula I) where R and R which may be the same or different, are alkyl, alkenyl, or alkynyl groups preferably having l-20 carbon atoms, and the Xs are oxygen or sulphur atoms, at least one of the Xs being an oxygen atoms.
• R and/ or R are alkenyl or alkynyl groups
• the group(s) may contain more than one multiple bond.
• R and R are alkyl groups, especially branched chain alkyl groups. It is to be understood of course that the invention includes products consisting of a mixture of different compounds in accordance with Formula I.
• the invention also includes a method of preparing compounds of Formula I in which a compounds of the formula (Formula II) 3,184,410 Patented May 18, 1965 ice where the Xs are oxygen or sulphur atoms, at least one of the Xs in each ring being an oxygen atom, and R and R have the values stated previously, is reacted with sulphur, in an inert atmosphere and preferably in a solvent, e.g., the diketone shown chelated in Formula I, and at elevated temperature, e.g., l00200 C.
• Compounds of Formula II are known and commercially available.
• the diketone produced as a by-product of the reaction may be recovered for re-use, c.g., by distillation.
• the invention further includes a method of preparing compounds of Formula I in which molybdenum hexacarbonyl is reacted with sulphur and a diketone or monothio diketone of the Formula R C(XCH C(X)R where X, R and R have the values stated previously for Formula I.
• This method of preparation has the advantage over the previous method that it avoids using the airsensitive compounds of Formula II and the reaction mixture generates its own inert atmosphere of carbon monoxide.
• a lubricating composition consisting essentially of a blend of a lubricating oil, which may be mineral or synthetic, and a molybdenum compound of Formula I.
• a lubricating oil which may be mineral or synthetic
• a molybdenum compound of Formula I for most applications, e.g., for use as an engine or gear lubricant, only a small proportion, e.g., O.l5% by weight of the composition, of the molybdenum compound will be needed in the blend to confer improved load carrying or anti-wear properties on the lubricating oil.
• the amount of molybdenum compound that can be dissolved in the lubricating oil will depend primarily on the nature of the alkyl groups R and it is to be understood that the composition may contain suspended as well as dissolved molybdenum compound of Formula I. In the use of such a lubricating composition, the dissolved molybdenum compound will gradually be converted to molybdenum disulphide and other compounds and at the same time a corresponding amount of the undissolved material will go into solution.
• Method 1 A mixture of molybdenum tri-acetylacetonatc (3.93 g.) prepared by the method of Larson and Moore (J. Inorg. Chem. 1, 856, 1952), acetylacetone (25 ml.) and sublimed sulphur (0.64 g.) was stirred and refluxed in an inert atmosphere for 5 hours. The black mixture was freed of solvent by vacuum distillation and the residue dispersed in benzene. The black solid was filtered olf, Washed with benzene and dried in vacuo.
• the product so recovered is hereinafter referred to as M1.
• Product M1 was blended into an SAE 90 refined mineral lubricating oil at 1% wt. concentration and'the load carrying and anti-wear properties of the composition and of the base oil without M1 were assessed by theiwell-f known 4-ball'test, the results being tabulated bel0w.'
• Additive M Additive Ma Measurements on 1% wt.
• R and R are aliphatic. hydrocarbon radicals having 1-20 carbon atoms, andthe Xs are atoms selected from. the group consisting of oxygen and sulphur, at least one of the Xs being an oxygen atom. v '2.
• Suflicient of the product was dispersed benzene and added to a SAE defined mineral oil (as used in'Example .1) to give, after removal of benzene by warmingun-i der vacuum, a 1 percent by weight blend.
• the load-carry- ;j 4. A method according to claim '3 wherein the reaction is carried out a't a temperature'within the range C.200C.
• At least one of the Xs being an oxygen atom which comprises reacting a compound of formula R C(X)CH C(X)R wherein the Xs, and R and R have the values assigned above, with sulphur and molybdenum hexacarbonyl.
• a lubricating composition consisting essentially of a blend of a lubricating oil and a compound according to claim 1, the said compound being added in an amount sufiicient to improve the lubricating properties of the composition.

Landscapes

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

Applications Claiming Priority (1)

Publications (1)

Family

ID=10345268

Family Applications (1)

Country Status (8)

Cited By (8)

Citations (1)

• 1963
  • 1963-08-20 GB GB32871/63A patent/GB1041019A/en not_active Expired
• 1964
  • 1964-08-05 US US387786A patent/US3184410A/en not_active Expired - Lifetime
  • 1964-08-06 CH CH1026464A patent/CH471158A/de not_active IP Right Cessation
  • 1964-08-14 DE DE19641443536 patent/DE1443536A1/de active Pending
  • 1964-08-19 NL NL6409570A patent/NL6409570A/xx unknown
  • 1964-08-20 SE SE10042/64A patent/SE310663B/xx unknown
  • 1964-08-20 BE BE652070A patent/BE652070A/xx unknown
  • 1964-08-20 AT AT720064A patent/AT248454B/de active

Patent Citations (1)

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