EP0120036A4 - HETEROCYCLIC COMPOUNDS CONTAINING BORON AND LUBRICATING OILS CONTAINING THE SAME. - Google Patents

HETEROCYCLIC COMPOUNDS CONTAINING BORON AND LUBRICATING OILS CONTAINING THE SAME.

Info

Publication number
EP0120036A4
EP0120036A4 EP19830902871 EP83902871A EP0120036A4 EP 0120036 A4 EP0120036 A4 EP 0120036A4 EP 19830902871 EP19830902871 EP 19830902871 EP 83902871 A EP83902871 A EP 83902871A EP 0120036 A4 EP0120036 A4 EP 0120036A4
Authority
EP
European Patent Office
Prior art keywords
compound
carbon atoms
radicals
same
different
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19830902871
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0120036A1 (en
Inventor
Richard A Holstedt
Peter Jessup
Kenneth Baron
Michael C Croudace
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.)
Union Oil Company of California
Original Assignee
Union Oil Company of California
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/418,196 external-priority patent/US4511516A/en
Priority claimed from US06/434,602 external-priority patent/US4490265A/en
Priority claimed from US06/476,513 external-priority patent/US4533480A/en
Application filed by Union Oil Company of California filed Critical Union Oil Company of California
Publication of EP0120036A1 publication Critical patent/EP0120036A1/en
Publication of EP0120036A4 publication Critical patent/EP0120036A4/en
Withdrawn legal-status Critical Current

Links

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
    • C10M139/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing atoms of elements not provided for in groups C10M127/00 - C10M137/00
    • 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
    • C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
    • C07F5/02—Boron compounds
    • C07F5/04—Esters of boric acids
    • 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
    • C10M129/48—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring
    • C10M129/52—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring polycarboxylic
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/20—Thiols; Sulfides; Polysulfides
    • C10M135/22—Thiols; Sulfides; Polysulfides containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
    • C10M135/26—Thiols; Sulfides; Polysulfides containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing carboxyl groups; Derivatives 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
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/32—Heterocyclic sulfur, selenium or tellurium compounds
    • C10M135/36—Heterocyclic sulfur, selenium or tellurium compounds the ring containing sulfur and carbon with nitrogen or oxygen
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/12—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 compound containing atoms of elements not provided for in groups C10M141/02 - C10M141/10
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C10M2207/142—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings polycarboxylic
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/284—Esters of aromatic monocarboxylic acids
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/285—Esters of aromatic polycarboxylic acids
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    • 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
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    • 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
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M2215/064—Di- and triaryl amines
    • C10M2215/065—Phenyl-Naphthyl amines
    • C—CHEMISTRY; METALLURGY
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    • C10M2215/066—Arylene diamines
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    • C10M2215/067—Polyaryl amine alkanes
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    • C10M2227/061—Esters derived from boron
    • C10M2227/062—Cyclic esters
    • 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
    • C10M2227/063—Complexes of boron halides
    • 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
    • C10M2227/065—Organic compounds derived from inorganic acids or metal salts derived from Ti or Zr
    • 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
    • C10N2010/02—Groups 1 or 11
    • 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
    • C10N2010/06—Groups 3 or 13
    • 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
    • C10N2010/08—Groups 4 or 14
    • 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
    • C10N2010/10—Groups 5 or 15
    • 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
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/14—Group 7
    • 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
    • C10N2010/16—Groups 8, 9, or 10

Definitions

  • boron containing compounds are desirable additives for lubricating oils.
  • One such boron containing compound is disclosed in United States Patent 3,224,971 to Knowles, et al. Which relates to intracomplexed borate esters and to lubricating compositions containing said esters.
  • the borate esters are organo-boron compounds derived from boric acid and a bis (O-hydroxy-alkylphenyl) amine or sulfide.
  • boron ester composition is described in United States Patent 3,269,853 to English et al. which discloses a boron ester curing agent which consists of a cyclic ring structure containing boron, oxygen, nitrogen, carbon and hydrogen.
  • Another object of the present invention is to provide a boron-containing, heterocyclic compound which additionally contains sulfur and halogen atoms.
  • Yet another object of the present invention is to provide a lubricating composition having extreme pressure, anti-wear and friction reducing properties.
  • a further object of the present invention is to provide a lubricating composition containing extreme pressure, anti-wear, friction reducing and corrosion prevention additives, and in addition, an anti-oxidant to prevent attack of oxidants upon metal bearings.
  • This invention resides in certain boron-containing, heterocyclic compounds and derivatives of the same having the formula:
  • R is an inorganic radical, or an organic radical having from 1 to about 50 carbon atoms
  • R 1 and R 2 are the same or different organic radicals having from 1 to about 50 carbon atoms
  • y is an integer from 1 to 4
  • M is an organic or inorganic radical, but preferably is either hydrogen or a transition metal having an atomic number of 21 through 30 or a Group IVA metal (as disclosed in the Periodic Table located in the Handbook of Chemistry and Physics, 46th Edition).
  • M is an organic radical, it is preferred that it be chosen from the group consisting of alkyl, alkenyl, alkynyl, aryl, arylalkyl, and alkaryl radicals of between 1 and 50 carbon atoms, with methyl and cyclohexyl radicals being among the most preferred groups.
  • the invention additionally resides in an extreme pressure, anti-wear and friction reducing lubricating oil and a minor amount of a boron-containing, heterocyclic compound as above-described.
  • the boron-containing, heterocyclic compounds may conveniently be prepared by reacting either a saturated or unsaturated primary amine with an organic epoxide, such as an alkyl epoxide or an aromatic epoxide to form a reaction product.
  • the reaction product thus formed is reacted with boric acid to form a boron-containing, heterocyclic compound.
  • the boron-containing, heterocyclic compound may be reacted with a transition metal salt or a Group IVA metal salt to produce a metal derivative of the boron-containing, heterocyclic compound.
  • the boron-containing heterocyclic compounds may be produced by reacting either sulfur or a halogen with a boron-containing, heterocyclic compound prepared using an unsaturated primary amine.
  • boron-containing, heterocyclic compounds impart extreme pressure, anti-wear and friction reducing properties to lubricating oils when added to said oils at use concentrations.
  • Another embodiment of the invention resides in a lubricating composition comprising boron-containing, heterocyclic compounds of the invention, metal, sulfur or halogen, derivatives thereof, said lubricant composition being further provided on an optional basis with any of (1) a polysulfide derivative of 2,5-dimercapto-1, 3 , 4-thiodiazole, (2) terephthalic acid, and (3) either a bis(dithiobenzil) metal derivative, a sulfur bridged, bis (hindered phenol) or an alkylated or dialkylated diphenyl amine or a mixture thereof.
  • the present invention resides in extreme pressure, anti-wear and friction reducing lubricating oil compositions comprising a major amount of an oil of lubricating viscosity and a minor amount of a boron-containing, heterocyclic compound. Alternatively corrosion inhibitors and anti-oxidants may be incorporated into the lubricating composition.
  • Anti-wear, friction reducing and extreme pressure (or "E.P.") additives are chemicals which are added to lubricating compositions to reduce friction and reduce or prevent destructive metal-to-metal contact in the lubrication of moving surfaces.
  • Lubricating oils provide good lubrication between moving surfaces in contact with each other, as long as a film of said oil is maintained between the relatively moving surfaces.
  • hydrodynamic lubrication This particular kind of lubrication is commonly termed “hydrodynamic lubrication”.
  • boundary lubrication is needed, and is governed by parameters of the contacting surfaces, such as, surface finish, hardness, metal shear strength, and the coefficient of friction between the metals involved.
  • Destructive metal-to-metal contact due to lack of lubrication under extreme conditions, manifests itself in different forms such as scoring, welding, scuffing, ridging, rippling, rapid wear, and in some cases deformation or complete destruction of the metal components.
  • the boron-containing, heterocyclic compounds described herein may be incorporated in a wide variety of lubricating oils, for example, mineral oil, crude oil, synthetic oil, industrial oils, for example, cutting oil, metal working fluids and grease.
  • the additives may be added to lubricating oils derived from paraffins, naphthenic or mixed base crude petroleum oils that have been subjected to solvent and/or sulfuric-acid treatment, aluminum chloride treatment, hydrogenation and/or other refining treatments.
  • the additives described herein may be incorporated in petroleum distillates, such as diesel fuel, jet engine fuel, furnace oil, gas oil and other light oils.
  • the petroleum oils may be of virgin or cracked petroleum stock, or mixtures thereof, boiling in the range of about 100° F.
  • the petroleum oil may contain cracked components such as those derived from cycle oils or cycle cuts boiling above gasoline, usually in the range of about 450° F. (232.22° C.) to about 750° F. (398.89° C.) and may be derived by catalytic or thermal cracking. Oils of high or low sulfur content such as diesel fuels or oils may additionally be used.
  • Preferred distillate lubrication oils which are improved by the addition of additives herein have an initial boiling point within the range of 350° F. (176.67° C.) to about 475° F. (245.83° C.), an end point in the range of about 500° F. (260° C.) to about 1,100° F. (598.33° C.), and a flash point not lower than 110° F. (43.33° C.).
  • the additives herein are added to lubricants used in automotive engines and diesel engines, i.e., automotive engine oil and diesel engine oil.
  • Lubricants derived from oil shale are particularly desirable for use herein.
  • Oil shale is typically found as a compact sedimentary rock, generally laminated, that contains little or no oil but does contain organic material, derived from aquatic organisms or waxy spores and pollen grains, which is convertible to oil by heat.
  • Crude shale oil, in combination with water, gas and spent shale containing a carbonaceous residue and mineral matter, is formed by the pyrolysis of oil shale.
  • the hydrocarbons of shale oil are highly unsaturated, resembling the products of thermal cracking of petroleum, as would be expected because of the pyrolytic origin of shale oil. Once the shale oil is extracted, it is subjected to conventional hydrotreating procedures to produce a variety of hydrocarbon products, including lubricants.
  • Synthetic lubricating oils as defined herein are those oils derived from a product of chemical synthesis (man-made oils). Typical examples of such compositions include the polyglycol fluids (i.e., polyalkylene glycol); silicones which consist of a silicone-oxygen polymer chain to which are attached hydrocarbon branches composed of either alkyl or phenyl groups; phosphates; polyphenyl esters; synthetic hydrocarbons and various esters of organic acids and alcohols.
  • polyglycol fluids i.e., polyalkylene glycol
  • silicones which consist of a silicone-oxygen polymer chain to which are attached hydrocarbon branches composed of either alkyl or phenyl groups
  • phosphates phosphates
  • polyphenyl esters synthetic hydrocarbons and various esters of organic acids and alcohols.
  • the polyalkylene glycol lubricating oils suitable for use herein preferably are derived from the reaction product of the appropriate alkylene oxides.
  • the alkylene moiety of the above compositions have a carbon chain of from about 1 to about 10 carbon atoms, preferably from about 2 to about 7 carbon atoms and a molecular weight within the range of from about 200 to about 2,000, especially from about 200 to about 1,000, most preferably from about 200 to about 800.
  • suitable polyalkylene glycols include polyethylene glycol, polypropylene glycol, polyisopropylene glycol, polybutylene glycol and the like.
  • Silicone lubricants have extra-ordinary low viscosity-temperature coefficients coupled with good oxidation stability.
  • the lubricant contains a repeating silicon-oxygen backbone and has organic groups R, wherein R is methyl, phenyl, vinyl and the like.
  • the silicones herein typically have an average molecular weight within the range of from about 400 to about 9,000.
  • the polyphenyl ethers suitable for use herein have from 3 to 7 benzene rings and form 1 to 6 oxygen atoms, with the stated oxygen atoms joining the stated benzene rings in chains as ether linkages.
  • One or more of the stated benzene rings in these polyphenyl ethers may be hydrocarbonyl-substituted.
  • the hydrocarbonyl substituents for thermal stability, must be free of CH and aliphatic CH so that preferred aliphatic substituents are lower saturated hydrocarbon radicals (1 to 6 carbon atoms) like methyl and terbutyl, and preferred aromatic substituents are aryl radicals like phenyl and tolyl.
  • the benzene ring supplied in the hydrocarbonyl substituent contributes to the total number of benzene rings in the molecule.
  • Polyphenyl ethers consisting exclusively of chains of from 3 to 7 benzene rings with at least one oxygen atom joining the stated benzene rings in the chains as an ether linkage have particularly desirable thermal stability.
  • alkyl polyphenyl ethers suitable for use are 3-ring polyphenyl ethers like 1-(p-methyl-phenoxyl) 4-phenoxybenzene and 2,4-diphenoxy-1-methyl-benzene, 4-ring polyethers like bis(p-(p-methyl-phenoxy) phenyl) ether and bis ((p-tert-butylphenoxy)phenyl) ether, and the like.
  • Polyphenyl ethers consisting exclusively of benzene rings and ether oxygen atoms linking said rings are exemplified by the triphenoxy benzenes and aryl-substituted polyphenyl ethers such as biphenyl phenoxyphenyl ether, biphenylyloxy-phenyl phenoxyphenyl ether, dibiphenylyloxy- benzene, bis(phenylyloxy-phenyl) ether, and the like.
  • a preferred class of polyphenyl ethers comprises those consisting of benzene rings joined in a chain by oxygen atoms as ether linkages between each ring.
  • Examples of the polyphenyl ethers contemplated in the class are the bis(phenoxy-phenyl) ethers (4 benzene rings joined in a chain by 3 oxygen atoms), illustrative of which is bis (m- phenoxyphenyl) ether.
  • the bis(phenoxy-phenoxy) benzenes are particularly preferred in the present invention.
  • the polyphenyl ethers suitable for use herein include the bis(phenoxy-phenoxy- phenoxyl) ethers such are bis(m-(m-phenoxy-phenoxy) phenyl) ether, bis(p-(p-phenoxy-phenoxy phenyl) ether, m-(m-phenoxy- phenoxy)phenoxy)phenyl m-(o-phenoxy-phenoxy) phenyl ether and the bis(phenoxy-phenoxy-phenoxy) benzenes such as m-bis(m-phenoxy-phenoxy) benzene, p-bis(p-(m-phenoxy-phenoxy)phenoxy) benzene and m-bis(m-p-phenoxy-phenoxy)phenoxy) benzene.
  • Synthetic lubricating oils derived from hydrocarbons are generally of two types, namely, dialkylated benzene and polymerized alpha-olefins.
  • Dialkylated benzene herein is formed from the condensation product of the appropriate alkyl compound and has a carbon chain from about 5 to about 50 carbon atoms, preferably from about 8 to about 20 carbon atoms, and a molecular weight of from about 200 to about 1,500, preferably from about 300 to about 700.
  • Representative compounds include di-n-decylbenzene, n-decyl-n-tetradecylbenzene, and n-nonyl-dodecylbenzene.
  • Typical compounds include 1-octene, 1-decene and 1-dodecene.
  • Representative compounds include trioctyl phosphate, tricresyl phosphate and dicresyl methyl phosphate.
  • Esters of organic acids which are suitable for use herein as synthetic lubricating oils preferably are selected from organic acids having carbon chains of from C 4 to C 40 carbon units.
  • Organic acids which may be reacted with the alcohols herein include caproic, decanoic, sebacic, laurel, oleic, stearic, palmitic etc.
  • alcohols herein may be derived from either natural or synthetic origin; for example, pentaerythritol, trimethylolpropane, amyl, 2-ethylhexanol or laurel alcohol may be used to form the desired ester.
  • the esters are formed using conventional methods.
  • the esters may be prepared by reaction of the desired alcohol with the desired acid, acid anhydride or acid halide using conventional reaction conditions and techniques.
  • Synthetic lubricating oils which are improved by the addition of the additives herein additionally include those derived from solid carbonaceous products, conveniently prepared by blending finely ground carbonaceous materials with a solvent to form a slurry. The slurry is then introduced into a reaction vessel containing a conventional hydrogenation catalyst and is reacted under normal hydrogenating pressures and temperatures. After hydrogenation, solids that are present may conveniently be removed from the product stream. The product is next stripped of solvent. The balance of the product stream may be distilled to obtain products of various boiling ranges, for example, hydrocarbons boiling in the gasoline range and hydrocarbons boiling in the lubricating oil range.
  • Synthetic lubricating oils produced from solid carbonaceous products are primarily aromatic and generally have a boiling range of about 300°F. (148.89° C.) to about 1,400° F. (760° C.), a density of about 0.6 to about 1.1 g/cm 3 and a carbon to hydrogen molecular ratio in the range of about 1.3:1 to about 0.66:1.
  • a typical example is a lubricating oil obtained from a subbituminous coal, such as Wyoming- Montana coal, comprising a middle oil having a boiling range of from about 375° F.
  • the synthetic oil improved herein may be a nonhydrocarbon oil of lubricating viscosity.
  • suitable examples include synthetic oils obtained by polymerization of lower molecular weight alkylene oxides, such as propylene oxide and/or ethylene oxide employing alcohol or acid initiators, such as lauryl alcohol or acetic acid.
  • Other typical synthetic oils include esters, for example, di (2-ethylhexyl)-silicate, and silicate esters, such tetra-(2-ethylhexyl)-orthosilicate and hexa-(2-ethylbutoxy)-disiloxane.
  • the boron-containing, heterocyclic compounds described herein may be employed in conjunction with other additives commonly used in petroleum products.
  • other additives commonly used in petroleum products.
  • rust and corrosion inhibitors emulsifying agents, antioxidants or oxidation inhibitors, dyes, haze inhibitors, anti-static agents, detergents, dispersants, viscosity index improvement agents and pour point reducing agents.
  • Soaps or other thickening agents may be added to the lubricating oil compositions to form compositions having the consistency of a grease.
  • additive concentrates comprising concentrated solutions of the herein boron-containing, heterocyclic compounds together with said other additives whereby the several additives are added simultaneously. Dissolution of the additive or additive concentrate into the oil composition may be facilitated by mixing accompanied with mild heating, but his is not absolutely essential.
  • Metal-working fluids such as cutting and grinding fluids are defined as liquids applied to a cutting tool or apparatus to assist in a cutting or machining process by washing away chips or serving as a lubricant or coolant, for example, in milling, drilling, turning, cutting, threading, broaching, surface grinding, form grinding, flute grinding, and similar metal-working operations.
  • These oils are preferably obtained from conventionally refined lubricating oils containing film-strength additives, or sulfurized naphthene-base oils which may additionally contain emulsifying agents.
  • Representative fluids and agents include: water, water solutions or emulsions of detergents and oils, mineral oils, fatty oils, chlorinated mineral oils, sulfurized mineral oils and mixtures thereof.
  • boron-containing, heterocyclic compounds may be incorporated in the lubricating oils in any convenient way.
  • boron-containing, heterocyclic compounds may be added directly to the oil by dissolving the desired boron derivative in the lubricating oil at the desired level of concentration.
  • the boron-containing, heterocyclic compound is blended with the lubricating oil such that its concentration is from about 0.1 to about 15 percent by weight, preferably from about 0.5 to about 10 percent by weight of the resultant oil composition.
  • the compounds may first be blended with suitable solvents to form concentrates that may readily be dissolved in the appropriate oil at the desired concentration.
  • a concentrate it ordinarily will contain at least 10 to about 65 percent by weight of the compound and preferably from about 25 to 65 percent by weight of said compound.
  • the solvent in such a concentrate may be present in amounts of about 35 to about 75 percent by weight.
  • Suitable solvents which may be used for this purpose are naphtha, light mineral oil (i.e., 150 neutral to 450 neutral) and mixtures thereof.
  • the particular solvent selected should, of course, be selected so as not to adversely affect the other desired properties of the ultimate oil composition.
  • the solvent for use in incorporating the additive in a fuel oil should be compatible with the fuel in terms of stability, boiling range, corrosiveness, etc.
  • boron-containing, heterocyclic compounds of the present invention are represented by the following formula:
  • R is an inorganic radical, or an organic radical having from about 1 to about 50 carbon atoms, typically about 1 to 30 carbon atoms, and preferably from about 1 to about 20 carbon atoms.
  • R is hydrogen or a substituted or unsubstituted hydrocarbyl group, particularly an alkyl, alkenyl, alkynyl, aryl, alkylaryl or arylalkyl radical having from about 1 to about 30 carbon atoms, preferably form about 1 to about 20 carbon atoms, especially from about 9 to about 20 carbon atoms.
  • R 1 and R 2 are the same or different organic radicals having from about 1 to about 50 carbon atoms and preferably from about 2 to about 30 carbon atoms, with R 1 and R 2 oftentimes containing at least 3 or at least 4 carbon atoms.
  • R 1 and R 2 generally include at least two carbon atoms bridged between the nitrogen and oxygen atoms, and usually, R 1 and R 2 are the same or different substituted or unsubstituted hydrocarbyl or hydrocarbyloxy groups, y is an integer from 1 to 4 and M is an organic or inorganic radical, but preferably is either hydrogen or a transition metal having an atomic number from 21 to 30 or a Group IVA metal of the Periodic Table and mixtures thereof'.
  • M is an organic radical, it is preferred that it can be chosen from the group consisting of substituted and unsubstituted alkyl, alkynyl, alkenyl, aryl, arylalkyl, and alkaryl groups of between 1 and 50 carbon atoms, with methyl and cyclohexyl radicals being among the most preferred groups.
  • R is hydrogen or a substituted or unsubstituted hydrocarbyl group and at least one of R 1 and R 2 , if both are aromatic, contains no carbon atoms or three to five carbon atoms of the same aromatic ring in a chain of atoms bridging (or connecting) the oxygen atom to the nitrogen atom.
  • R contains at least 9 carbon atoms if aliphatic and at least 7 carbon atoms if aromatic; further, R in this embodiment, and sometimes also R 1 and R 2 , are organic radicals other then hydroxyhydrocarbyl groups, and particularly other than alkanol groups.
  • R 1 and R 2 in this embodiment and even more preferably both are radicals other than an amino or hydrocarbylamino group, and it is further preferred that R 1 and R 2 contain only carbon atoms bridging the nitrogen and oxygen atoms, with none of said bridging carbon atoms being a member of an aromatic ring.
  • boron-containing, heterocyclic compounds of the present invention have the formula:
  • R 3 is hydrogen or an organic radical having from about 1 to about 30 carbon atoms, preferably from about 1 to about 20 carbon atoms. Most preferably, R 3 is hydrogen or a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, alkylaryl or arylalkyl radical having from about 1 to about 30 carbon atoms, preferably from about 1 to about 20 carbon atoms.
  • R 4 , R 5 , R 6 and R 7 are the same or different and are either hydrogen or an organic radical, such as substituted or unsubstituted hydrocarbyl radicals having from 1 to about 50 carbon atoms, preferably from about 1 to 30 carbon atoms, wherein at least one (and preferably at least two) of the said R 4 , R 5 , R 6 or R 7 is an aryl, alkylaryl or arylalkyl radical having from about 6 to about 30 carbon atoms.
  • R 8 , R 9 , R 10 and R 11 are the same or different radicals selected from hydrogen or organic radicals such as substituted or unsubstituted hydrocarbyl groups; typically, R 8 , R 9 , R 10 and R 11 are either hydrogen or an alkyl group having from about 1 to about 6 carbon atoms.
  • y 1 is an integer from 1 to 4
  • M 1 is an inorganic or organic radical, but is preferably selected from hydrogen or a metal selected from a transition metal having an atomic number of 21 through 30 or a Group IVA metal.
  • R 4 , R 7 , R 8 , R 9 , R 10 and R 11 are preferably hydrogen or substituted or unsubstituted alkyl groups, with hydrogen being especially preferred for all six radicals, and R 5 and R 6 are aromatic radicals, preferably an unsubstituted phenyl radical.
  • This embodiment of the invention has the added advantage of enhanced hydrolytic stability and solubility in lubricating oils.
  • the above-described, boron-containing, heterocyclic compounds are produced by (A) reacting a primary amine with an alkylene oxide or epoxide or an aromatic oxide. The resulting product is then reacted with boric acid to give the corresponding boron-containing, heterocyclic compound.
  • Amines which are suitable for use herein include saturated amines such as methylamine, ethylamine, propylamine, butylamine, octadecylamine, dodecylamine, cyclohexylamine, phenylamine and unsaturated amines such as cocoamine, tallowamine and oleylamine and mixtures thereof.
  • the primary amines used herein may conveniently be derived from a commercial source or may be produced from alkyl, alicyclic, aryl, alkylaryl or arylalkyl halides and ammonia using conventional techniques and apparatus. These halides react with ammonia at moderately high temperatures and under pressure to give a mixture of primary, secondary and tertiary amines. The primary amine yield of this process may be improved by using an excess of ammonia in the reaction.
  • Another typical process for producing suitable amines comprises reacting alcohols with ammonia in the vapor phase at temperatures of from 570° F. (298.89°) to 940° F. (504.44° C.) under 200 to 1,000 p.s.i.g. (12.6 to 67 atmospheres).
  • Primary amines useful in preparing the heterocyclic compounds of the present invention have the chemical formula RNH 3 wherein R is an organic radical, preferably where R contains no more than 30 carbon atoms.
  • the alkylene oxides or epoxides which are suitable for use herein may be prepared by three general methods (1) direct oxidation of olefins in the presence of a conventional oxidation catalyst; (2) reaction of olefins with peroxy acids; and (3) hydrolysis of chlorohydrins with bases.
  • Chlorohydrins are produced by a two step reaction wherein an alkylene oxide, chlorine and water are passed into a packed reactor to form the respective alkylene chlorohydrin, for example ethylene chlorohydrin.
  • Another convenient method for preparing alkylene oxides or epoxides involves vapor phase oxidation of olefins.
  • an olefin and oxygen or air are passed over a silver oxide catalyst supported on alumina in the vapor phase under increased temperature and pressure to produce an epoxide.
  • a wide variety of alkylene or epoxides may be used to prepare the precursor for the heterocyclic compounds herein.
  • Typical alkylene oxides or epoxides which are suitable for use include ethylene oxide, propylene oxide, 1,2-epoxy-butane, cyclohexene oxide, cyclooctene oxide, and cyclododecene oxide, and mixtures thereof.
  • the primary amine is reacted with an alkylene oxide or epoxide in the presence of a solvent, for example toluene to produce a dialkoxylated amine.
  • a solvent for example toluene to produce a dialkoxylated amine.
  • the primary amine and alkene oxide or epoxide are reacted at a molar weight ratio typically of about 1:2.
  • the solvent is added in sufficient quantity to dissolve or disperse the reactants to ensure better contact of said reactants.
  • the solvent is removed from the reaction product, for example, by evaporation, distillation, etc.
  • the dialkoxylated amine is reacted with boric acid at a typical molar ratio of from about 1:2 to about 1:1 in the presence of a solvent, for example, xylenes, benzene, toluene, etc. to produce the heterocyclic compound required herein.
  • a solvent for example, xylenes, benzene, toluene, etc.
  • the solvent will comprise from about 20 to about 50 weight percent, especially from about 30 to about 40 weight percent of the reaction mixture.
  • the heterocyclic compound thus produced will contain from about 0.5 to about 10 weight percent, preferably from about 2 to about 5 weight percent of boron.
  • the reactions herein are typically conducted under reflux at a temperature of from about 176° F. (80° C.) to about 450° F. (232.22° C.), especially from about 176° F. (80° C.) to about 300° F. (148.89° C.), at atmospheric pressure for about 1 to about 5 hours.
  • Aromatic oxides suitable for use herein preferably have the formula:
  • R 12 , R 13 , R 14 or R 15 is aryl, alkylaryl or arylalkyl with the remaining R groups being independently hydrogen or an organic radical having 1 to 30 carbon atoms, preferably hydrogen or an alkyl radical having 1 to 6 carbon atoms.
  • Suitable aromatic oxides may be obtained from a commercial source or prepared by three general methods: (1) direct oxidation of aromatic olefins in the presence of a conventional oxidation catalyst; (2) reaction of aromatic olefins with peroxy acids; and (3) hydrolysis of chlorohydrins with bases.
  • aromatic oxides may be used to prepare the epoxide/primary amine adducts needed to produce the boramid compounds herein.
  • Typical aromatic oxides for use herein include styrene oxide, alpha-methylstyrene oxide, para-tertiarybutylstyrene oxide, cresyl oxide including ortho-methylstyrene oxide, 1,2-epoxybenzene, and para-methylstyrene oxide arid mixtures thereof.
  • the primary amine is normally reacted with the aromatic oxide in the presence of a solvent, for example, toluene, methanol or water to produce an epoxide/amine adduct.
  • a solvent for example, toluene, methanol or water to produce an epoxide/amine adduct.
  • the solvent is added in sufficient quantity to dissolve or disperse the reactants to insure better contact thereof.
  • the primary amine and aromatic oxide are reacted at a pressure of from about atmospheric pressure to about 500 p.s.i.g. (33 atmospheres) at a temperature of from 176° F. (80° C.) to 450° F. (232.22° C.), for 1 to 5 hours.
  • the primary amine is preferably reacted with the aromatic oxide at a molar ratio of 1:2 to produce an epoxide/amine adduct. It may be desirable to react the primary amine with two different aromatic oxides to produce a mixed epoxide/amine adduct. In this embodiment of the invention, one mole of the primary amine is reacted with one mole each of two different aromatic oxides to produce the desired mixed oxide amine.
  • Yet another method of producing the desired epoxide/amine adduct involves reacting one mole of an aromatic-substituted alkene oxide and one mole of an alkene oxide, for example ethylene oxide, with a primary amine to produce an epoxide/amine adduct having an aromatic moiety and an alkyl moiety attached to the nitrogen atoms of the primary amine.
  • the epoxide/amine adduct is reacted with boric acid at a molar ratio of from about 1:2 to about 1: 1 in the presence of a solvent, for example, xylene, benzene, toluene, or the like, to produce a boron-containing, heterocyclic compound of the present invention.
  • a solvent for example, xylene, benzene, toluene, or the like
  • the solvent will comprise from about 20 to about 50 weight percent, preferably from about 30 to about 40 weight percent of the reaction mixture.
  • the reaction is conducted under reflux at a temperature of from 176° F. (80° C.) to 450° F. (232.22° C.), preferably from 176° F. (80° C.) to 300° F.
  • the boron-containing heterocyclic compound thus produced will contain from about 0.5 to about 10 weight percent, preferably from about 2 to about 5 weight percent of boron.
  • Metal derivatives of the boron-containing, heterocyclic compounds herein are conveniently prepared by contacting the boron-containing, heterocyclic compound with a metal usually in salt form.
  • a metal usually in salt form is suitable for use.
  • the preferred metal compound for use in incorporating the metal ion into the boramid compound is the metal acetate.
  • the heterocyclic compounds are reacted with the metal compounds in a molar ratio range of from about 1:4 to about 6:1, preferably from about 1:1 to about 4:1, at a pressure of from about atmospheric to about 500 p.s.i.g. (33 atmospheres) and a temperature of from about 176° F. (80° C.) to about 450° F. (232.22° C.). Water and acetic acid are distilled from the reaction mixture using a water-cooled condenser.
  • Desirable metals are usually selected from transition metals having an atomic number of 21 through 30 or Group IVA metals of the Periodic Table. Transition metals which are suitable for use are selected from scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper and zinc and mixtures thereof. Suitable Group IVA metals include lead and tin and mixtures thereof. Normally, the metal will comprise from about 1 to about 17 weight percent, preferably from about 5 to about 9 weight percent of the boron-containing, heterocyclic compound. When a metal is incorporated into the compounds herein, the metal will displace and substitute for the hydrogen atom attached to the oxygen atom which is a component of the hydroxy group attached to the boron atom of the heterocyclic structure.
  • Suitable boron-containing, heterocyclic compounds herein which contain alkyl species in the heterocyclic ring structure are selected from the group consisting of methylaminodiethylate hydrogen borate, ethylaminodiethylate hydrogen borate, propylaminodiethylate hydrogen borate, butylaminodiethylate hydrogen borate, octadecylamino diethylate hydrogen borate, dodecylaminodiethylate hydrogen borate, cyclohexylaminodiethylate hydrogen borate, phenylaminodiethylate hydrogen borate, oleylaminodiethylate hydrogen borate, cocoaaminodiethylate hydrogen borate. tallowaminodiethylate hydrogen borate, dodecylamino di(-2-methylethylate) hydrogen borate, and dodecylamino di(-2-phenylethylate) hydrogen borate and mixtures thereof.
  • Metals are conveniently incorporated into the boron-containing, heterocyclic compounds herein.
  • the metal is reacted with the desired boron-containing, heterocyclic compound in salt form.
  • the metal acetates, propionates, etc. are suitable for use.
  • not all metal salts are desirable for incorporating the metal ion into the boron-containing, heterocyclic compound.
  • the metal carbonates, nitrates, chlorides and sulfates, to name a few, are all undesirable as vehicles for imparting metal ions into the boron-containing, heterocyclic compound.
  • These metal salts experience solubility problems and separation problems, and, in addition, undesirable ions frequently contaminate the boron-containing, heterocyclic compound.
  • the boron-containing, heterocyclic compounds are reacted with the metal compounds herein in a molar ratio range of from about 1:4 to about 6:1, especially from about 1:1 to about 4:1.
  • Desirable metals are conveniently selected from transition metals having an atomic number of 21 through 30 or Group IVA metals for the Periodic Table. Transition metals which are suitable for use are selected from scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper and zinc and mixtures thereof. Suitable Group IVA metals include lead and tin and mixtures thereof. Normally, the metal will comprise from about 1 to 17 weight percent, preferably from about 5 to about 9 weight percent of the boron-containing, heterocyclic compound.
  • the metal When a metal is incorporated into the boron-containing, heterocyclic compound, the metal will substitute for the hydrogen atom of the hydroxy group attached to the boron atom of the heterocyclic structure.
  • the Examples hereinafter refer to cocoaminodiethylate hydrogen borate as boramid C/12, tallowaminodiethylate hydrogen borate as boramid T/12 and octadecylaminodiethylate hydrogen borate as boramid 18/12.
  • the corresponding metal-boron derivative will, of course, recite the desired metal in the compound nomenclature, for example, zinc boramid C/12, etc.
  • Representative boron-containing, heterocyclic compounds which contain aromatic species in the heterocyclic ring structure include the following compounds: 1-hydroxy-3,7-diphenyl-5-dodecyl-5-aza-1-bora-2,8-dioxacyclo octane; 1-hydro-4,6-diphenyl-5-dodecyl-5-aza-1-bora-2,8- dioxacyclooctane; 1-hydroxy-4,7-diphenyl-5-dodecyl-5-aza-1- bora-2,8-dioxacyclooctane; 1-hydroxy-3,7-dicresyl-5-dodecyl- 5-aza-1-bora-2, 8-dioxacylooctane; 1-hydro-4,6-dicresyl-5- dodecyl-5-aza-1-bora-2,8-dioxacyclooctane; 1-hydroxy-4,7- dicresyl
  • methyl, ethyl, propyl, butyl, cyclohexyl, octadecyl, phenyl, steryl, oleyl, coco and tallow moieties may be substituted for the dodecyl moiety in the above heterocyclic compounds.
  • Representative metallic derivatives of the above compositions include the following compounds: copper di (-1-oxy-3-,7-diphenyl-5-dodecyl-5-aza-1-bora-2,8-dioxacyclooctane); copper di (-1-oxy-4,6-diphenyl-5-dodecyl-5-aza-1-bora-2,8-dioxa-cyclooctane); copper di (-1-oxy-4,7-diphenyl-5-dodecyl-5-aza-1-bora-2,8-dioxacylooctane; copper di (-1-oxy-3,7-dicresyl-5-dodecyl-5-aza-1-bora-2,8-dioxacyclo octane); copper di (-1-oxy-4,6-dicresyl-5-dodecyl-5-aza-1-bora-2,8-dioxacyclooctane); copper di (-1-
  • heterocyclic compounds which may be incorporated into the above compounds, i.e., substituted for the copper, include scandium, titanium, chromium, manganese, iron, cobalt, nickel, zinc, lead and tin and mixtures thereof.
  • methyl, ethyl, propyl, butyl, cyclohexyl, octadecyl, phenyl, steryl, oleyl, coco and tallow moieties may be substituted for the dodecyl moiety in the above-described heterocyclic compounds.
  • Another species of the heterocyclic compounds herein are the bis (hydrocarbyloxy methylated) boron-containing, heterocyclic compounds. These compounds have
  • R 16 is an inorganic radical or an organic radical having from 1 to about 50 carbon atoms
  • R 17 and R 18 are the same or different organic radicals having from 1 to about 50 carbon atoms
  • y 2 is an integer from 1 to 4
  • M 2 is an organic or inorganic radical but preferably is hydrogen or a metal selected from a transition metal having an atomic number of 21 through 30 or a Group IVA metal as disclosed in the Periodic Table located in the Handbook of Chemistry and Physics, 46th Edition.
  • M 2 is an organic radical, it is preferred that it be chosen from the group consisting of substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, arylalkyl, and alkaryl radicals, with methyl and cyclohexyl radicals being among the most preferred groups.
  • R 16 , R 17 and R 18 are organic radicals, usually at least 65 percent, more usually at least 75 percent, and most usually at least 90 percent of the atoms composing said radicals will be carbon and hydrogen atoms.
  • R 1 6 is hydrogen or a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, alkylaryl, or arylalkyl radical having from 1 to about 30 carbon atoms, and more preferably, from 1 to about 24 carbon atoms.
  • R 17 and R 18 are preferably the same or different radicals selected from a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, alkylaryl and arylalkyl radicals having from 1 to about 50 carbon atoms, and more preferably from 1 to about 30 carbon atoms, more preferably still from 1 to about 20 carbon atoms, and most preferably from 1 to about 10 carbon atoms.
  • Primary amines useful in preparing the bis (hydrocarbyloxy methylated), boron-containing, heterocyclic compounds and metal derivatives thereof may be produced by reacting ammonia with organic halides, such as the alkyl, aryl, alkylaryl or arylalkyl halides having 1 to 30 carbon atoms. These halides react with ammonia at moderately high temperatures and under pressure to produce a mixture of primary, secondary and tertiary amines. The primary amine yield of this process may be improved by using an excess of ammonia in the reaction.
  • organic halides such as the alkyl, aryl, alkylaryl or arylalkyl halides having 1 to 30 carbon atoms.
  • the primary amines are typically reacted with an alkyl, aryl, alkylaryl or arylalkyl glycidyl ether to produce a bis (hydrocarbyloxy methylated) primary amine.
  • Glycidyl ethers suitable for use herein preferably have the formula:
  • Typical glycidyl ethers for use herein include methyl glycidyl ether, ethyl glycidyl ether, propyl glycidyl ether, butyl glycidyl ether, phenyl glycidyl ether, cresyl glycidyl ether, phenyl methyl glycidyl ether, ethyl phenyl glycidyl ether and phenyl ethyl glycidyl ether and mixtures thereof.
  • the primary amine is normally reacted with the glycidyl ether in the presence of a solvent, for example, toluene to produce a dioxygenated amine.
  • a solvent for example, toluene to produce a dioxygenated amine.
  • the solvent is added in sufficient quantity to dissolve or disperse the reactants to insure better contact thereof.
  • the primary amine and glycidyl ether are reacted at a pressure of from about atmospheric pressure to about 500 p.s.i.g. (33 atmospheres) at a temperature of from 176° F. (80° C.) to 450° F. (232.22° C.) for 1 to 30 hours.
  • the primary amine is preferably reacted with the glycidyl ether at a molar ratio of 1:2 to produce the bis (hydrocarbyloxy methylated) amine. It may be desirable to react the primary amine with two different glycidyl ethers to produce a mixed hydrocarbyloxy methylated amine.
  • one mole of the primary amine is reacted with one mole each of two different glycidyl ethers to produce the desired mixed hydrocarbyloxy methylated amine.
  • Yet another method of producing the desired amine involves reacting one mole of an aromatic glycidyl ether and one mole of an alkyl glycidyl ether with a primary amine to produce an amine having an alkaryl moiety and an alkyl moiety attached to the nitrogen atom of the primary amine.
  • the bis (hydrocarbyloxy methylated) amine or mixed hydrocarbyloxy methylated amine is reacted with boric acid at a molar ratio of from about 1:2 to about 1:1 in the presence of a solvent, for example , xylene , benzene, toluene , or the like, to produce a bis (hydrocarbyloxy methylated) boron-containing, heterocyclic compound of the present invention.
  • a solvent for example , xylene , benzene, toluene , or the like
  • the solvent will comprise from about 20 to about 50 weight percent, preferably from about 30 to 40 weight percent of the reaction mixture.
  • the reaction is conducted under reflux at a temperature of from 176° F. (80° C.) to 300° F.
  • the compound thus produced will contain from about 0.5 to about 10 weight percent, preferably from about 2 to about 5 weight percent of boron.
  • the primary amine and glycidyl ether are first reacted together and the intermediate reaction product thus produced is, next, reacted with boric acid.
  • An alternate method of producing the bis (hydrocarbyloxy methylated) boron-containing, heterocyclic compounds herein involves reacting the primary amine, glycidyl ether and boric acid in a one-step process.
  • Representative bis (hydrocarbyloxy methylated), boron-containing, heterocyclic compounds produced in accordance with the procedure herein include the following compounds: 1-hydroxy-3,7-di(methoxy methyl)-5-dodecyl-5-aza-1-bora-2,8-dioxacyclooctane; 1-hydroxy-4,6-di(methoxy methyl)-5-dodecyl-5-aza-1-bora-2,8-dioxacyclooctane; 1-hydroxy-3,7-di(ethoxy methyl)-5-dodecyl-5-aza-1-bora-2, 8-dioxacyclooctane; 1-hydro-3,7-di(propoxy methyl)-5-dodecyl-5-aza-1-bora-2,8-dioxacyclooctane; 1-hydroxy-4,6-di(butoxy methyl)-5-dodecyl-5-aza-1-bora
  • methyl, ethyl, propyl, butyl, cyclohexyl, octadecyl, phenyl, steryl, oleyl, coco and tallow moieties may be substituted for the dodecyl moiety in the above heterocyclic compounds.
  • This embodiment of the invention has the added advantage of enhanced extreme pressure properties and a more pleasant odor.
  • Metal derivatives of the bis(hydrocarbyloxy methylated), boron-containing, heterocyclic compounds, herein are conveniently prepared by contacting the compound with a metal, usually in salt form.
  • a metal usually in salt form.
  • the metal acetates, proprionates, etc. are suitable for use.
  • the preferred metal compound for use in incorporating the metal ion into the bis (hydrocarbyloxy methylated) boron- containing, heterocyclic compound is the metal acetate.
  • these compounds are reacted with the metal compounds in a molar ratio range of from about 1:4 to about 6:1, preferably from about 1:1 to about 4:1, at a pressure of from about atmospheric to about 500 p.s.i.g. (33 atmospheres) and a temperature of from about 176° F. (80° C.) to about 450° F. (232.22° C.).
  • Water and acetic acid are distilled from the reaction mixture using a water-cooled condenser.
  • metal compounds are: copper di[-1-oxy-2,7-di(methoxy methyl)-5-dodecyl-5-aza-1-bora-2,8-dioxacyclooctane]; copper di[-1-oxy-4,6-di(methoxy methyl)-5-dodecyl-5-aza-1-bora-2,8-dioxacyclooctane]; copper di[-1-oxy-3 , 7-di (ethoxy methyl) -5-dodecyl-5-aza-l-bora-2, 8-dioxacyclo-octane]; copper di[-1-oxy-3,7-di(propoxy methyl)-5-dodecyl-5-aza-1-bora-2,8-dioxacyclooctane]; copper di[-1-oxy-4,6-di (butoxy methyl)-5-dodecyl-5-aza-1-bora-2,8-di
  • metals which may be incorporated into the above compounds, i.e., substituted for the copper include scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, zinc, lead and tin and mixtures thereof.
  • methyl, ethyl, propyl, butyl, cyclohexyl, octadecyl, phenyl, steryl, oleyl, coco and tallow moieties may be substituted for the dodecyl moiety in the above-described compounds.
  • the additive comprises a sulfurized boron-containing, heterocyclic compounds herein have the formula:
  • R 20 is an inorganic radical, or an organic radical having from about 1 to about 50 carbon atoms and R 21 , R 22 and R 23 are the same or different organic radicals having from about 1 to about 50 carbon atoms.
  • R 20 , R 21 , R 22 and R 23 are the same or different organic radicals having from about 1 to about 30 carbon atoms and typically are the same or different, substituted or unsubstituted hydrocarbyl groups, such as substituted or unsubstituted aliphatic and aromatic groups, particularly alkyl, alkenyl, alkynyl, aryl, alkaryl or arylalkyl radicals having from about 1 to 30 carbon atoms.
  • R 20 and R 21 are the same or different unsubstituted alkyl radicals having from about 1 to about 20 carbon atoms, while R 22 and R 23 are the same or different unsubstituted alkylaryl or arylalkyl groups having from about 8 to about 30 carbon atoms.
  • y 3 is an integer from 1 to 4 and M 3 is an organic or inorganic group, but preferably is either hydrogen or a transition metal having an atomic number from 21 to 30 or a Group IVA metal of the Periodic Table and mixtures thereof.
  • M 3 is an organic radical, it is preferred that it be chosen from the group consisting of alkyl, alkenyl, alkynyl, aryl, arylalkyl, and alkaryl radicals of between 1 and 50 carbon atoms, with methyl and cyclohexyl radicals being among the most preferred groups.
  • the boron-containing, heterocyclic compound is sulfurized and has the formula:
  • R 24 and R 25 are the same or different organic radicals having from about 1 to about 30 carbon atoms, and preferably, R 24 and R 25 are independently selected from substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, alkylaryl or arylalkyl radicals having from about 1 to about 30 carbon atoms, and most preferably, R 24 and R 25 are the same or different unsubstituted alkyl radicals having from about 1 to about 20 carbon atoms.
  • M 4 is an integer from 1 to 4 and M 4 may be one or more organic or inorganic groups, but preferably is either hydrogen or a transition metal having an atomic number from 21 to 30 or a Group IVA metal of the Periodic Table and mixtures thereof. If M 4 is an organic radical, it is preferred that it be chosen from the group consisting of alkyl, alkenyl, alkynyl, aryl, arylalkyl, and alkaryl groups of between 1 and 50 carbon atoms, with methyl and cyclohexyl radicals being among the most preferred groups.
  • R 26 and R 28 may be inorganic radicals but more typically R 26 and R 28 as well as R 27 and R 29 are the same or different organic radicals having from about 1 to about 30 carbon atoms, preferably 1 to 20 carbon atoms, and R 30 , R 31 , R 32 and R 33 are the same or different organic radicals having from about 1 to about 50 carbon atoms, preferably, from about 1 to about 30 carbon atoms.
  • n and n 1 are the same or different integers from 1 to 4, preferably 1 or 2.
  • the radicals R 26 , R 27 , R 28 and R 29 are typically selected from the same or different, substituted or unsubstituted hydrocarbyl groups such as substituted or unsubstituted aliphatic and aromatic groups, particularly the alkyl, alkenyl, alkynyl, aryl, alkaryl or arylalkyl radicals having from about 1 to about 30 carbon atoms, and preferably, R 26 , R 27 , R 28 and R 29 are the same or different alkyl radicals having from 1 to about 20 carbon atoms.
  • the organic radicals R 30 , R 31 , R 32 and R 33 are typically selected from the same or different, substituted or unsubstituted hydrocarbyl groups such as substituted or unsubstituted aliphatic and aromatic groups, particularly the alkyl, alkenyl, alkynyl, aryl, alkylaryl or arylalkyl radicals having from about 1 to about 30 carbon atoms.
  • substituted or unsubstituted hydrocarbyl groups such as substituted or unsubstituted aliphatic and aromatic groups, particularly the alkyl, alkenyl, alkynyl, aryl, alkylaryl or arylalkyl radicals having from about 1 to about 30 carbon atoms.
  • substituted or unsubstituted hydrocarbyl groups such as substituted or unsubstituted aliphatic and aromatic groups, particularly the alkyl, alkenyl, alkynyl, aryl, alkylaryl or arylalkyl radical
  • R 30 , R 31 , R 32 , and R 33 are alkaryl or arylalkyl having from about 8 to about 30 carbon atoms.
  • y 5 and y 6 are the same or different integers from 1 to 4, and M 5 and M 6 are organic or inorganic groups, but preferably are either hydrogen or a transition metal having an atomic number from 21 to 30 or a Group IVA metal of the Periodic Table and mixtures thereof.
  • M 5 or M 6 is an organic radical, it is preferred that it be chosen from the group consisting of alkyl, alkenyl, alkynyl, aryl, arylalkyl, and alkaryl radicals of between 1 and 50 carbon atoms, with methyl and cyclohexyl radicals being among the most preferred group.
  • M 5 and M 6 may be the same physical atom or species, i.e. the two borated radicals may be attached to the same metal atom.
  • sulfohalogenated, boron-containing, heterocyclic compounds have the formula:
  • R 34 and R 36 may be inorganic radicals but more typically R 34 and R 36 as well as R 35 and R 37 are the same or different organic radicals having from about 1 to about
  • R 38 , R 39 , R 40 and R 41 are the same or different organic radicals having from about 1 to about 50 carbon atoms
  • n 2 is an integer from 1 to 4, preferably 1 or 2
  • X and X 1 are halogens independently selected from the group consisting of chlorine, fluorine, bromine and iodine and mixtures thereof, with chlorine being especially preferred.
  • the radicals R 34 , R 35 , R 36 and R 37 are typically selected from the same or different, substituted or unsubstituted hydrocarbyl groups, such as, substituted or unsubstituted aliphatic and aromatic groups, particularly the alkyl, alkenyl, alkynyl, aryl, alkylaryl or arylalkyl radicals having from about 1 to about 30 carbon atoms, preferably from about 1 to about 20 carbon atoms.
  • the organic radicals R 38 , R 39 , R 40 and R 41 are typically selected from the same or different, substituted or unsubstituted hydrocarbyl groups, such as, substituted or unsubstituted aliphatic and aromatic groups, particularly the alkyl, alkenyl, alkynyl, aryl, alkylaryl, or arylalkyl radicals having from about 1 to about 50 carbon atoms, preferably from about 1 to about 30 carbon atoms.
  • R 38 , R 39 , R 40 and R 41 are alkaryl or arylalkyl having from about 8 to about 30 carbon atoms.
  • M 7 and M 8 are the same or different integers from 1 to 4, and M 7 and M 8 may be an organic or inorganic group, but preferably are either hydrogen or a transition metal having an atomic number from 21 to 30 or a Group IVA metal of the Periodic Table and mixtures thereof. If M 7 or M 8 is an organic radical, it is preferred that it be chosen from the group consisting of alkyl, alkenyl, alkynyl, aryl, arylalkyl, and alkaryl radicals of between 1 and 50 carbon atoms, with methyl and cyclohexyl radicals being among the most preferred groups. M 7 and M 8 may be the same physical atom or species, i.e. the two borated radicals may be attached to the same metal atom.
  • the sulfurized and polysulfurized, boron-containing, heterocyclic compounds herein have the added advantage of better oxidation stability, as well as substantially enhanced extreme pressure properties.
  • the sulfurized and polysulfurized compounds exhibit the same or superior extreme pressure properties when used at weight percent concentrations which are half as great as other heterocyclic, boron-containing compounds disclosed herein.
  • Typical halogenated, boron-containing, heterocyclic compounds useful in the present invention have the formula: wherein R 42 may be an inorganic radical but more typically R 42 and R 43 are the same or different organic radicals having from about 1 to about 30 carbon atoms, R 44 and R 45 are the same or different organic radicals having from about 1 to about 50 carbon atoms, X 2 and X 3 are halogens selected from the group consisting of chlorine, fluorine, bromine and iodine and mixtures thereof, with chlorine and bromine being especially preferred.
  • the radicals R 42 and R 43 are typically selected from the same or different, substituted or unsubstituted hydrocarbyl groups, such as substituted or unsubstituted aliphatic and aromatic groups, particularly the alkyl, alkenyl, alkynyl, aryl, alkylaryl or arylalkyl radicals having from about 1 to about 30 carbon atoms, preferably from about 1 to about 20 carbon atoms.
  • the organic radicals R 44 and R 45 are typically selected from the same or different, substituted or unsubstituted hydrocarbyl groups, such as, substituted or unsubstituted aliphatic and aromatic groups, particularly the alkyl, aryl, alkylaryl or arylalkyl radicals having from about 1 to about 50 carbon atoms, preferably from about 1 to about 30 carbon atoms. Most preferably R 44 and R 45 are alkaryl or arylalkyl having from about 8 to about 30 carbon atoms.
  • y 9 is an integer from 1 to 4, and M 9 may be an organic or inorganic group, but preferably is either hydrogen or a transition metal having an atomic number between 21 and 30 or a Group IVA metal of the Periodic Table and mixtures thereof.
  • M 9 is an organic radical, it is preferred that it be chosen from the group consisting of alkyl, alkenyl, alkynyl; aryl, arylalkyl, and alkaryl radicals of between 1 and 50 carbon atoms, with methyl and cyclohexyl radical being among the most preferred groups.
  • the sulfurized or sulfohalogenated compounds herein are produced in accordance with the procedure described before for producing the boron-containing, heterocyclic compounds with the added stipulation that the primary amine used to form the heterocyclic compound is unsaturated.
  • Elemental sulfur is reacted with the heterocyclic compound in toluene solvent to produce either a mono-sulfurized or polysulfurized compound, depending upon amount of sulfur added to the reaction mixture.
  • the reaction is mildly exothermic.
  • the sulfohalogenated form of the compound may be produced by substituting a sulfur halide for the elemental sulfur above, for example a sulfur chloride such as sulfur dichloride, etc.
  • the halogenated form of the heterocyclic compound is produced by substituting a hydrogen halide or halogen for the sulfur above.
  • Typical sulfurized, boron-containing heterocyclic compounds include 1-hydroxy-3,7-diphenyl-5-(9,10-epithiostearyl)-1-bora-2,8-dioxa-5-aza-cyclooctane; 1-hydroxy-3,7-diphenyl-5-(9,10 epithiotallow)-1-bora-2,8-dioxa-5-aza-cyclooctane; 1-hydroxy-3,7-diphenyl-5-(epithiosoya)-1-bora-2,8-dioxa-5-aza-cyclooctane; and 2,6-dioctyl-3,5-di[8-(5-hydroxy-3,7-diphenyl-1-aza-4,6-diocta-5-bora-cyclooctyl)--octyl]-1,4-dithia-cyclohexane and mixtures thereof.
  • Sulfohalogenated, boron-containing, heterocyclic compounds include 10,10'-dithiodi[9-chloro-1-(5-hydroxy-3,7-diphenyl-1-aza-4,6-diocta-5-bora-cyclooctyl)-octadecane]; dithiodi[1-(5-hydroxy-3,7-diphenyl-1-aza-4,6-diocta-5-bora-cyclooctyl)-chlorotallow]; and dithiodi[1-(5-hydroxy-3,7-diphenyl-1-aza-4,6-diocta-5-bora-cyclooctyl)chlorosoya] and mixtures thereof.
  • fluorine, bromine and iodine may be substituted for the chlorine above.
  • Halogenated boron-containing, heterocyclic compounds typically include 1-hydroxy-3,7-diphenyl-5- (9-10-dichlorooctadecyl)-1-bora-2,8-dioxa-5-aza-cyclo octane; 1-hydroxy-3,7-diphenyl-5-(9-10-dichlostearyl) -1-bora-2,8-dioxa-5-aza-cyclooctane; and 1-hydroxy-3,7 -diphenyl-5-(dichlorotallow)-1-bora-2,8-dioxa-5aza- cyclooctane and mixtures thereof.
  • Other halogens which may be substituted for the chlorine above include fluorine, bromine and iodine and mixtures thereof.
  • the boron-containing, heterocyclic compounds herein may be incorporated into lubricant compositions in combination with one or more additives which impart corrosion and anti-oxidant properties to said lubricant compositions.
  • additives which inhibit copper and lead corrosion, as well as, oxidation of metals may be used in the lubricant compositions herein.
  • copper corrosion in engine bearings is inhibited by adding to the lubrication composition a corrosion inhibiting amount, normally from 0.001 to about 5 weight percent, preferably from 0.005 to about 2.5 weight percent of a hydrocarbon polysulfide derivative of 2,5-dimercapto-1,3,4-thiadiazole having the formula:
  • R 46 and R 47 are the same or different moieties selected from hydrogen or straight or branched chain alkyl, cyclic or alicyclic alkyl, aryl, alkylaryl or arylalkyl radicals having from 2 to about 30 carbon atoms, and w and z are integers from 1 to 8. It should be noted that R 46 and R 47 cannot both be hydrogen because the compound would be rendered insoluble in lubricating oils. Thus, when R 46 is hydrogen, R 47 must be selected from one of the other moieties described above, and vice versa.
  • the herein-described polysulfide derivatives of 2,5-dimercapto-1,3,4-thiadiazole can be suitably prepared by several methods. For example, they can be prepared by reacting 2,5-dimercapto-1,3,4-thiadiazole with a suitable sulfenyl chloride, or by reacting the dimercaptan with chlorine and reacting the resultant disulfenyl chloride below, with a primary or tertiary alkylmercaptan. Bis-trisulfide derivatives are obtained by reacting the dimercaptan with a mercaptan and a sulfur chloride in molar ratios from 1:2:2 to 1:2:4 at a temperature of from about 120° F.
  • Higher polysulfides may be prepared by reacting the thiodiazole di or trisulfides with sulfur at temperatures of about 200° F. (93° C.) to 400° F. (204° C.).
  • Another method of preparing the polysulfides of the present invention involves reacting 2,5-dimercapto-1,3,4-thiadiazole with a mercaptan and sulfur in the molar ratio of from 1:1:1 to 1:4:16 at temperatures of from about 160° F. (71° C.) to about 300° F. (149° C.).
  • the 2-mercapto, 5-alkyldithio-1,3,4-thiadiazole derivative may be prepared by reacting less than the stoichiometric amount of a primary or tertiary mercaptan with the disulfenyl chloride above to produce the bis form of the compound.
  • Compounds produced in accordance with the above procedure preferably are polysulfides of 1,3,4-thiadiazole-2,5-bis(alkyl, di, tri or tetra sulfide) containing from 2 to about 30 carbon atoms.
  • Desirable polysulfides include 1,3,4-thiadiazole-2,5-bis(octyldisulfide); 1,3,4-thiadiazole-2,5-bis(octytrisulfide); 1,3,4-thiadiazole-2,5-bis(octyltetra-sulfide); 1,3,4-thiadiazole-2,5-bis (dodecyldisulfide); 1,3,4-thiadiazole-2,5-bis(dodecyl trisulfide); 1,3,4-thiadiazole-2, 5-bis(dodecyltetra sulfide); 2-lauryldithia-5-thiaalphamethyl-styryl-1,3,4-thiodiazole; 2-lauryltrithia-5-thiaalphamethyl-styryl-1,3,4-thiodiazole; 2-mercapto-5-octyldithio-1,3,4-thiadiazole and 2-mercapto
  • An especially desirable ratio of the above copper corrosion inhibitors, when two are mixed together, is from 1:20 to 20:1, preferably from 1:10 to 10:1.
  • a small but effective amount of terephthalic acid is the preferred lead corrosion inhibitor herein.
  • the terephthalic acid may be prepared in accordance with conventional techniques and apparatus. For example, para- xylene may be oxidized to terephthalic acid at elevated temperature and pressure in the presence of acetic acid, a bromine promoter and a heavy metal catalyst, i.e., cobalt, manganese, etc.
  • a second method of preparing terephthalic acid comprises reacting benzene and potassium carbonate over a cadmium catalyst at increased temperature and pressure. Generally, the terephthalic acid is incorporated into lubricating oils at a concentration of from about 0.001 to about 1 weight percent, especially from about 0.01 to about 0.05 weight percent.
  • the oxidation inhibitors or anti-oxidants herein have high enough molecular weights to ensure that they remain stable in a hot crankcase oil, e.g. 300° F. (149° C.) and, in addition, enhance the corrosion preventive properties of the copper and lead corrosion inhibitors by interrupting or terminating the attack of oxidants upon copper/lead-bearing metal.
  • One type of corrosion is an oxidative process involving the loss of electrons from the corroding metal to an oxidant such as oxygen, air, nitrogen oxides, partially burned gasoline, blow-by products and the like.
  • the oxidation inhibitors as described hereinafter are selected from the group consisting of bis(dithiobenzil) metal derivatives; sulfur bridged, bis(hindered phenols); and alkyl or diakyl, diphenylamines and mixtures thereof. These compounds effectively limit or prevent the attack of oxidants on copper/lead metal. In addition, these compounds also help to control oil oxidation as manifested by reduced sludge and varnish formation, and by reduced oil thickening.
  • the bis (dithiobenzil) metal derivatives herein preferably have the formula: wherein M 10 is a first row transition metal and t is an integer from 1 to 4.
  • Suitable transition metals include vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, preferably iron, cobalt and nickel.
  • the bis(dithiobenzil) metal derivatives may be prepared, for example, by reacting benzoin with a phosphorus sulfide in the presence of dioxane at elevated temperature to produce the thiophosphoric ester of dithiobenzoin.
  • the desired divalent metal for example, metallic halide, is reacted with the above-described thiophosphoric ester of dithiobenzoin to produce the bis(dithiobenzil) metal derivative.
  • the bis (dithiobenzil) metal derivatives herein do not readily dissolve in lubricant compositions. However, when the bis (dithiobenzil) metal derivatives are mixed with the boron-containing, heterocyclic compounds herein, especially dodecylaminodi- (phenylethylate) hydrogen borate, the mixture goes into solution in lubricant compositions such as motor oils. Although the invention is not bound by any theory, it is believed that the bis (hydrocarbyloxy methylated) boron-containing, heterocyclic compound and bis(dithiobenzil) metal derivative form a complex which renders the bis(dithiobenzil) metal derivative soluble in lubricants, for example, motor oil.
  • the sulfur bridged, bis hindered phenols herein preferably have the formula:
  • R 48 and R 49 are selected from the same or different alkyl groups having from 1 to 6 carbon atoms.
  • the sulfur bridged, bis hindered phenols are prepared by conventional esterification procedures using a suitable alcohol and an acid of the formula:
  • the suitable alcohol herein preferably is thiodiglycol having the formula (HOCH 2 CH 2 ) 2 S which is prepared by the hydrolysis of dichloroethyl sulfide or the interaction of ethylene chlorohydrin and sodium sulfide using conventional techniques and procedures.
  • Sulfur bridged, bis(hindered phenols) which are suitable for use as anti-oxidants include thiodiethyl bis(3,5-dimethyl-4-hydroxy) hydrocinnamate; thiodiethyl- bis(3,5-diethyl-4-) hydrocinnamate; thiodiethyl bis(3,5-dipropyl-4-hydroxy) hydrocinnamate; thiodiethyl bis(3,5-dibutyl-4-hydroxy) hydrocinnamate; thiodiethyl bis(3,5-di pentyl-4-hydroxy) hydrocinnamate and thiodiethyl bis (3,5-dihexyl-4-hydroxy) hydrocinnamate and mixtures thereof.
  • Amines which are suitable for use as anti-oxidants or oxidation inhibitors herein have the formula:
  • R 52 and R 53 are hydrogen or the same or different alkyl radicals having from about 1 to about 30 carbon atoms, preferably from about 1 to about 20 carbon atoms, with at least one of R 52 and R 53 being an alkyl group (most preferably unsubstituted) having from about 1 to about 30 carbon atoms.
  • Diphenyl amines are produced by the self-condensation of a primary aromatic amine in the presence of a small amount of a strong mineral acid, such as anhydrous hydrochloric acid (0.5 wt. % of the amine), ferrous chloride or ammonium bromide.
  • a strong mineral acid such as anhydrous hydrochloric acid (0.5 wt. % of the amine), ferrous chloride or ammonium bromide.
  • the reaction is carried out in a corrosion-resistant apparatus fitted with a fractionating column.
  • the reaction temperature is maintained at 572° F. (300° C.) to produce the diphenyl amine.
  • Diphenyl amines are readily alkylated in the para position with compounds such as isobutylene, styrene, alpha-methylstyrene and the like using acid catalysts, for example, an acidic clay catalyst at 284° F. (140° C.).
  • Diphenyl amines are readily ortho-alkylated by olefins using aluminum amide as the catalyst.
  • the olefin is reacted with the diphenyl amine at a pressure of 735 to 4,410 p.s.i.g. (49 - 299 atmospheres).
  • the anti-oxidants herein are incorporated into lubricant compositions at concentrations of from 0.01 to about 2 weight percent, preferably from 0.025 to about 0.10 weight percent.
  • a boron-containing, heterocyclic compound is prepared by adding 20 grams of boric acid, 95 grams of Armak Ethomeen C/12 [bis(2-hydroxyethyl) cocoamine] and 250 ml or toluene to a single-necked one liter round-bottomed flask.
  • the toluene acts as a solvent and as an azaeotrope for water produced during the reaction.
  • boric acid is not soluble in toluene or Ethomeen C/12.
  • the flask is placed in a heating mantle and fitted with a Dean-Stark trap that is topped with a condenser. The mixture thus formed is then heated until it begins to reflux. Next, the mantle is adjusted to give a moderate reflux rate.
  • the reaction mixture is refluxed for one hour, or until the stoichiometric amount of water (12 ml.) collects in the Dean-Stark trap and all of the boric acid has dissolved, after which the toluene is distilled from the reaction product.
  • the reaction product (103 grams) is designated Boramid C/12 and has a clear golden color. Boramid C/12 is a fluid liquid while hot but sets into a soft viscous material when cooled to room temperature. The compound is readily soluble in hydrocarbon solvents and water.
  • Example II A boron-containing, heterocyclic compound is prepared by the following the procedure of Example I with the following substitution: Armak Ethomeen T/12 [bis(2-hydroxyethyl) tallowamine] is substituted for the Armak Ethomeen C/12. Substantially the same results are obtained, however, the resulting compound is designated Boramid T/12.
  • Example III A boron-containing, heterocyclic compound is prepared by mixing 20 grams of boric acid, 95 grams of Armak Ethomeen 18/12 [bis (2-hydroxyethyl) octadecylamine] and, as a solvent, 250 ml of toluene in a single-necked one liter round-bottomed flask. The flask is placed in a heating mantle and fitted with a Dean-Stark trap and water-cooled condenser. The mixture is heated under reflux for one hour, during which 12 ml of water collects in the Dean-Stark trap. The toluene is then distilled from the reaction product. The compound is designated Boramid 18/12 and is readily soluble in hydrocarbon solvents and water.
  • Example IV Boric acid (20 grams), N,N-diethanol-N-phenylamine (46.3 grams) and 250 mis of toluene are mixed in a one liter single-necked flask to prepare a boron-containing, heterocyclic compound.
  • the flask is equipped with a heating mantle, Dean-Stark trap and water-cooled condenser.
  • the mixture is heated under reflux until the reaction is completed (12 ml of water collects), approximately one hour, and the toluene is distilled from the reaction mixture.
  • the product thus prepared is suitable for use an extreme pressure, antiwear and friction reducing additive for lubrication compositions.
  • a metal derivative of Boramid C/12 is prepared by mixing 54 grams of the product of Example I (Boramid C/12), 400 ml of toluene, 24.6 grams of nickel acetate and 150 ml of methanol in a single-necked, one liter round-bottomed flask which is equipped with a heating mantle and water-cooled condenser. The mixture is refluxed for four hours. Next, water, toluene, methanol and acetic acid are distilled from the reaction product. The product (59 grams) contained 7.8 weight percent nickel as determined by emission spectroscopy and the resulting product is a fluid green liquid when hot, which turns into a solid upon cooling to room temperature. The product is readily soluble in hydrocarbon solvents and water, for example, isopropyl alcohol.
  • a copper-heterocyclic compound is prepared by adding 62 grams of boron-containing, heterocyclic C/12, 150 ml of toluene, 50 ml of water and 18.2 grams of cupric acetate to a 500 ml., single necked round bottom flask equipped with a Dean-Stark trap and condenser. The mixture is refluxed for 8 hours, after which, water, toluene and produced acetic acid (from acetate) are distilled leaving 68 grams of a green solid.
  • the additive and/or lubricant composition is tested in accordance with the procedure disclosed in ASTM D3233-73 (Reapproved 1978) using a Falex lubricant tester.
  • the test in accordance with the above ASTM designation, is performed by applying resistance to a revolving metal journal.
  • a rachet mechanism movably attached to two V-blocks applies resistance by steadily increasing pressure on the journal.
  • the metal journal and V-blocks (steel) are submerged in the lubricant composition to be tested.
  • Example VII A metal-boramid is prepared by following the procedure of Example VI with the following changes: 31 grams of Boramid C/12 is mixed with 19 grams of lead (II) acetate, 150 ml. of toluene and 25 ml of methanol. The mixture is refluxed for 2 hours, after which, the toluene, methanol, water and acetic acid (produced from acetate) are distilled using conventional techniques and apparatus. The resulting lead-Boramid C/12 product (32.6 grams) is a golden colored oil with the consistency of honey.
  • a lubricant composition containing nickel-Boramid C/12 an 450 neutral oil is tested for extreme pressure, anti-wear and friction reducing properties in a 1973 Chevrolet 350 cu. in. displacement V-8 engine which is run continuously for 196 hours on a single fill of the lubricating composition.
  • the lubricating oil does not contain conventional zinc dialkydithiophosphate anti-wear additives.
  • the lubricant composition is disclosed in detail in Table 3 below.
  • the Chevrolet engine is programmed to run in a repeating cycle that averaged approximately 40 MPH.
  • the cycle is disclosed in Table 4 below.
  • 1-hydroxy,7-diphenyl-5-coco-5-aza-1-bora-2,8-dioxacyclooctane is prepared by adding 14,889 grams of cocoamine (1) and 17,516 grams of styrene oxide to a 65 liter round bottomed flask that contains 13 liters to toluene and 1 liter of water.
  • the flask if placed in a heating mantle and fitted with a water-cooled condenser. The mixture thus formed is heated until it begins to reflux. Next, the temperature is adjusted to give a moderate reflux rate and the reaction mixture is refluxed for
  • reaction mixture is cooled to room temperature and 4,595 grams of boric acid are added to the flask. Then, the flask is equipped with a Dean-Stark trap topped with a water-cooled condenser and the reaction mixture is refluxed until water stops collecting in the trap. Toluene is distilled from the reaction product at a temperature of 400° F. (204° C.). The reaction produces 34,373 grams of 1-hydroxy- 3,7-diphenyl-5-co ⁇ o-5-aza-1-bora-2,8-dioxacyclooctane.
  • Cocoamine is a mixture of primary amines consisting of approximately 52 percent dodecylamine, 19 percent of tetradecylamine, 9 percent of hexadecyl amine, 6.5 percent of octylamine, 6 percent of decylamine, 2 percent of octadecyl amine and 5 percent of a mixture of octadecenylamine and octadecadienylamine. Cocoamine is produced commercially by the Armak Company under the tradename of Axmeen CD.
  • a boron-containing, heterocyclic compound is prepared by adding 17,605 grams of tallowamine 12) and 15,362 grams of styrene oxide to a 65 liter round bottomed flask that contains 11.34 liters of toluene and 1 liter of water.
  • the flask is fitted with a water-cooled condenser and placed in a heating mantle. The mixture thus formed is refluxed at a moderate rate for 24 hours.
  • the reaction is cooled to room temperature and 4,033 grams of boric acid are added to the flask.
  • the flask is fitted with a Dean-Stark trap, topped with a water-cooled condenser and the reaction mixture isrefluxed until water stops collecting in the trap.
  • Toluene isdistilled from the reaction product at a temperature of 400°
  • Tallowamine is a mixture of amines consisting of approximately 29 percent hexadecylamine, 20.5 percent octadecylamine, 44 percent of a mixture of octadecenylamine and octadecadienylamine, 3 percent tetradecylamine, 1.5 percent hexadecenylamine, 1 percent heptadecylamine and 0.5 percent tetradecenylamine.
  • Tallowamine is produced commercially by the Armak Company under the tradename Armeen T.
  • a copper derivative of 1-hydroxy-3,7-diphenyl-5- coco-5-aza-1-bora-2,8-dioxacyclooctane is prepared by following the procedure Example IX with the following exception: the above-described compound (47 grams), 100 ml of toluene, 20 ml of triethyl amine and 10 grams of cupric acetate are mixed in a single-necked, 500 ml round-bottomed flask, equipped with a heating mantle and water-cooled condenser. The mixture is refluxed for 16 hours, then filtered and the toluene, amine, water and acetic acid (produced in situ) are distilled from the reaction product. Using the above-procedure, copper di [-1-oxy-3,7-diphenyl-5-dodecyl-5-aza-1-bora-2,8-dioxacyclooctane] is produced.
  • Example II The reaction product produced in Example I (23.5 grams), 100 ml of toluene, 9.5 grams of lead acetate and 100 ml of triethylamine are mixed in a single-necked 500 ml round bottomed flask, equipped with a water-cooled condenser and heating mantle. The mantle heat is adjusted until a moderate rate of reflux is obtained. The mixture thus formed is refluxed for 18 hours. Next, the mixture is filtered, toluene, water, triethylamine and acetic acid (produced in the reaction) are distilled from the reaction product. The reaction produces lead di [-1-oxy-3,7-diphenyl-5-dodecyl-5-bora-2,8-dioxacyclooctane.
  • Iron di(-1-oxy-3,7-diphenyl-5-coco-5-aza-1-bora-2,8-dioxacyclooctane) is prepared according to the procedure of Example I with the following exception:
  • Zinc di[-1-oxy-3,7-diphenyl-5-coco-5-aza-1-bora-2,8-dioxacyclooctane] is produced according to the procedure of Example XI except that zinc acetate is substituted for the cupric acetate.
  • Tin di[-1-oxy-3,7-diphenyl-5-coco-5-aza-1-bora-2,8-dioxacyclooctane] is prepared by substituting tin acetate for the cupric acetate in Example XI.
  • Examples XVI to XXII are prepared by substituting tin acetate for the cupric acetate in Example XI.
  • Extreme pressure, anti-wear and friction reducing additives produced according to the procedure of Examples IX, XI, XII, XIII, XIV and XV are mixed with separate portions of 450 neutral oil at concentrations of 2 weight percent.
  • Example XXIII A copper corrosion inhibitor comprising 1,3,4-thio diazole-2,5-bis(dodecyldisulfide) is prepared by chlorinating 284 grams of n-dodecyl mercaptan in 0.6 liter of carbon tetrachloride with 1.47 moles of chlorine over a two hour period at a temperature of about 23° F. (-5° C.) to about 32° F. (0° C. ). Next, sulfenyl chloride which forms as a reaction product is stripped with nitrogen to remove hydrogen chloride, and the resultant compound is added to 86 grams of a 2,5-dimercapto-1,3,4-thiadiazole slurry. The mixture is heated at 86° F.
  • Example XXIV The procedure of Example XXII is followed to prepare 1,3,4-thiodiazole-2,5-bis (octyldisulfide) with the following exception: octyl mercaptan is substituted for the dodecylmercaptan.
  • Example XXV The oxidation inhibitor, thiodiethyl bis-(3,5-di-t-butyl-4-hydroxy) hydrocinnamate is prepared by melting together 17.95 weight percent of B,B'-dihydroxy-diethyl sulfide, 81.41 weight percent of (3,5-di-t-butyl-4-hydroxy) hydrocinnamate acid and 0.64 weight percent of sodium methylate under a nitrogen atmostphere at 266° F. (130° C.) for two and one-half hours. Methanol thus formed is separated from the reaction mixture and condensed in a dry-ice trap using nitrogen gas as a carrier. The reactants are heated at 149° F.
  • the oxidation inhibitor, bis(dithiobenzil) iron (II) is prepared by adding 400 grams of benzoin and 600 grams of phosphorous sulfide to a single-necked 5 liter, round bottomed flask equipped with heating mantle and water-cooled condenser and containing 1,500 ml of dioxane. The mixture thus formed is refluxed for two hours. Next, 200 grams of hydrated ferrous chloride dissolved in 500 ml of water is added to the 5 liter flask and the mixture is heated on a steam bath at 212° F. (100° C.) for 2 hours. The reaction product thus formed (169.5 grams) is filtered and washed with methanol.
  • Dodecylamino di(phenylethylate) hydrogen borate is prepared by adding 34.85 pounds (15,808 grams) of dodecylamine (1 equivalent) and 41.0 pounds (18,597 grams) of styrene oxide (2 equivalents) to a 17 U.S. gallon (64.3 liters) round bottomed flask equipped with a water-cooled condenser and containing 3 U.S. gallons (11.36 liters) toluene and 1 liter of water. The reaction is exothermic and begins immediately upon addition of the above reactants. Additional heat is applied and the reaction mixture is refluxed for a total of 24 hours, however, as little as 2 hours may result in complete reaction.
  • a lubricant composition containing H-Boramid-CD-S, 1,3,-4-thiodiazole-2,5-bis(octyldisulfide), terephthalic acid, and thiodiethyl bis-(3,5-di-t-butyl-4-hydroxy) hydrocinnamate is tested for copper and lead corrosion inhibition and anti-oxidant properties using a single-cylinder Labeco CLR Test Engine equipped with sintered copper (65 wt. %)/lead (35 wt. %) connecting rod bearings, in accordance with the procedure of Federal Test Method Standard No. 791B, method 3405.2.
  • Test duration consists of 40 hours operation at the prescribed test conditions of Table 6 above. When the prescribed gallery oil temperature is reached, the test time begins. Interim oil adjustments are made at the end of 10, 20 and 30 hours of test operation. A copper/lead bearing weight loss of about 40 mg of lower is considered acceptable. All of the tests are conducted using SAE 30 motor oil containing the additives and/or compounds, including concentrations in Table 7 below.
  • Examples XXXIV to XXXVIII The procedure of Examples XXVIII to XXXIII is used to test a lubrication composition for copper and lead corrosion inhibition and anti-oxidant properties with the following exception: bis(dithiobenzil) iron is substituted for thiodiethyl bis(3,5-di-t-butyl-4-hydroxy) hydrocinnamate as an anti-oxidant. All the tests are conducted using SAE 30 motor oil containing the additives and/or compounds, including concentrations in Table 8 below:
  • the bis(hydrocarbyloxy methylated) boron-containing heterocyclic compound 1-hydroxy-3,7-di(methyl phenoxy methyl)-5-coco-5-aza-1-bora-2,8-dioxacyclooctane, is prepared by adding 278.5 grams of cocoamine (1) and 450.5 grams of cresyl glycidyl ether to a 2-liter round-bottomed flask that contains 250 ml of toluene and 22 ml of water.
  • the flask is placed in a heating mantle and fitted with a water-cooled condenser. The mixture thus formed is heated until it begins to reflux. Next, the temperature is adjusted to give a moderate reflux rate and the reaction mixture is refluxed for 18 hours. The reaction mixture is cooled to room temperature and 86.0 grams of boric acid are added to the flask. Then, the flask is equipped with a
  • Cocoamine is a mixture of primary amines consisting of approximately 52 percent dodecylamine, 19 percent of tetradecylamine, 9 percent of hexadecyl amine, 6.5 percent of octylamine, 6 percent of decylamine, 2 percent of octadecyl amine and 5 percent of a mixture of octadecenylamine and octadeca dienylamine. Cocoamine is produced commercially by the Armak Company under the tradename of Armeen CD.
  • Example XL The bis (hydroxycarbyloxy methylated) boron-containing, heterocyclic compound, 1-hydroxy-3,7-di(methyl phenoxy methyl)-5-oleyl-5-aza-1-bora-2,8-dioxacyclooctane, is prepared by adding 55.6 grams of oleyl amine and 66.0 grams of cresyl glycidyl ether to a 1-liter round-bottomed flask that contains 250 ml of toluene. The flask is placed in a heating mantle and fitted with a water-cooled condenser. The mixture thus formed is heated until it begins to reflux. Next, the temperature is adjusted to give a moderate reflux rate and the reaction mixture is refluxed for 18 hours.
  • reaction mixture is cooled to room temperature and 12.4 grams of boric acid are added to the flask. Then, the flask is equipped with a Dean-Stark trap topped with a water- cooled condenser and the reaction mixture is refluxed until water stops collecting in the trap. Toluene is distilled from the reaction product at a temperature of 400° F. The reaction produces 97 grams of 1-hydroxy-3,7-(methyl phenoxy methyl)-5-oleyl-5-aza-1-bora-2,8-dioxacyclooctane.
  • Tallowamine is a mixture of amines consisting of approximately 29 percent hexadecylamine, 20.5 percent octadecylamine, 44 percent of a mixture of octadecenylamine and octadeca dienylamine, 3 percent tetradecylamine, 1.5 percent hexadecenylamine, 1 percent heptadecylamine and 0.5 percent tetradecenyl amine.
  • Tallowamine is marketed commercially by the Armak Company under the trademark Armeen T.
  • Example XLIII A copper derivative of 1-hydroxy-3,7-di(methyl phenoxy methyl)-5-coco-5-aza-1-bora-2,8-dioxacyclooctane is prepared by following the procedure of Example I with the following exception: the above descrbibed compound (47 grams), 100 ml of toluene, 20 ml of triethyl amine and 10 grams of cupric acetate are mixed in a single-necked, 500 ml round bottom flask, equipped with a heating mantle, Dean-Stark trap and water-cooled condenser.
  • Example XXXIX The compound 1-hydroxy-3,7-di(methyl phenoxy methyl)-5-coco-5-aza-1-bora-2,8-dioxacyclooctane produced in accordance with the procedure of Example XXXIX is tested for extreme pressure, anti-wear and friction reducing properties admixed with separate portions of 450 neutral oil and SAE 30 motor at concentrations of 1 and 2 weight percent respectively. Samples of 450 neutral oil and SAE 30 motor oil without the compound 1-hydroxy-3,7-di(methyl phenoxy methyl)-5-coco-5-aza-1-bora-2,8-dioxacyclooctane serve as controls of the experiments.
  • a lubricant composiiton is tested for friction reducing properties and copper and lead corrosion inhibition properties using a single-cylindered Labeco CLR Test Engine equipped with sintered copper (65 wt. %)/lead (35 wt. %) connecting rod bearings, in accordance with the procedure of
  • Test duration consists of 40 hours operation at the prescribed test conditions of Table 11 above. When the prescribed gallery oil temperature is reached, the test time begins. Interim oil adjustments are made at the end of 10, 20 and 30 hours of test operation. A copper/lead bearing weight loss of about 40 mg or lower is considered acceptable.
  • a lubricant composition containing 450 neutral oil, 1-hydroxy-3,7-diphenyl-5-coco-5-aza-1-bora-2,8-dioxaclooctane, and octyl diphenyl amine is tested for extreme pressure properties, and resistance to oxidation stability, and corrosion using a single-cylinder Labeco CLR Test Engine equipped with sintered copper (65 wt. %) /lead (35 wt.%) connecting rod bearings, in accordance with the procedure ASTM STP 509A, Part IV and the engine operating condition of Example L.
  • the engine Prior to each test run, the engine is completely disassembled, solvent cleaned, measured and rebuilt in strict accordance to furnished specifications. Following the preparation, the engine is installed on a dynamometer test stand equipped with the appropriate accessories for controlling speed, load, temperatures and other various engine operating conditions.
  • the engine is operated on a 4-hour break-in-schedule after which oil is sampled and leveled.
  • the engine is then operated under non-cyclic, moderately high speed, high load and temperature conditions for a test duration of 64 hours, with oil levels and additions each 8 hours.
  • the sulfurized, boron-containing, heterocyclic compound 1-hydroxy-3,7-diphenyl-5-(9,10 epithiooleyl)-1-bora-2,8-dioxa-5-aza-cyclooctane is prepared by mixing 12 grams of oleylamine, 9.6 grams of styrene oxide and 200 ml of toluene for 30 minutes at room temperature (25° C.) in a single-necked on a liter round-bottomed flask. The flask is placed in a heating mantle and water-cooled condenser. The mixture is heated under reflux for three hours producing and oleyamine/styrene oxide adduct.
  • V-blocks applies resistance by steadily increasing pressure on the journal.
  • the metal journal and V-blocks (steel) are submerged in the lubricant composition to be tested.
  • the results are summarized in Table 15 below:
  • a sulfochlorinated, boron-containing, heterocyclic compound is produced by adding 20 grams of 1-hydroxy-3,7-diphenyl-5-oleyl-5-aza-1-bora-2,8-dioxacyclooctane, 10 ml of toluene and 1.76 grams of sulfur monochloride to a one liter round-bottomed flask equipped with heating mantle and water-cooled condenser. The mixture thus formed is heated at 200° F. (93.33° C.) for 45 minutes, then 6.3 grams of 450 neutral oil is added to the flask.
  • Examples LV and LVI are tested for extreme pressure properties by admixing each compound with separate portions of 450 neutral oil at concentrations of 2 weight percent.
  • a sample of 450 neutral oil with an additive (compound) serve as a control in the experiment.
  • a chlorinated, boron-containing, heterocyclic compound is prepared by placing 71.3 grams of a mixture containing 75 weight percent of 1-hydroxy-3,7-diphenyl-5-tallow-5-aza-1-bora-2,8-dioxacyclooctane and 25 weight percent of 450 neutral oil into a 250 ml Pyrex flask equipped with a side arm. Chlorine gas is introduced into the flask through a Tygon tube attached to a glass tube equipped with a rubber stopper and extending to the bottom of the flask. The chlorine gas is bubbled through the heterocyclic compound with agitation.
  • a brominated, boron-containing, heterocyclic compound is prepared by placing 71.33 grams of a mixture containing 75 weight percent of 1-hydroxy-3,7-diphenyl-5-tallow-5-aza-1-bora-2,8-dioxacyclooctane and 25 weight percent of 450 neutral oil into a 250 ml Pyrex flask equipped with a heating mantle and thermometer.
  • Examples LX and LXI are tested for extreme pressure properties by admixing each compound with separate portions of SAE 30 motor oil containing 0.05 weight percent phosphorus and the concentration of additive indicated in Table 17 below.
  • a sample of SAE 30 motor oil without an additive (compound) serves as a control in the experiment.
  • R 1 , R 2 , R 22 , R 23 , R 30 , R 31 , R 32 , R 33 , R 38 , R 39 , R 40 , R 41 , R 44 , and R 45 are arylalkyl groups or alkaryl groups, it is most highly preferred that there be a chain of carbon atoms bridging the oxygen and nitrogen atoms, with none of said bridging carbon atoms being a member of an aryl ring. Even more preferred is that an aryl, alkaryl, or arylalkyl group be bonded to the bridging carbon atom connected directly to the oxygen atom. Still more preferred is that there be only two carbon atoms in the bridge between the oxygen and nitrogen atoms, with an aryl group, such as phenyl, bonded to the carbon atom of the bridge which is connected to the oxygen atom.)
  • heterocyclic, boron-containing compounds of the present invention are suitable as additives in any of a great number of lubricants, but most particularly in automobile and diesel lubrication oils.
  • the additives impart beneficial extreme pressure, anti-wear and friction-reducing properties to the lubricant, and thus enhance its usefulness in automobile engines, diesel engines, and the like.

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  • Chemical Kinetics & Catalysis (AREA)
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EP19830902871 1982-09-15 1983-08-22 HETEROCYCLIC COMPOUNDS CONTAINING BORON AND LUBRICATING OILS CONTAINING THE SAME. Withdrawn EP0120036A4 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US418196 1982-09-15
US06/418,196 US4511516A (en) 1980-06-12 1982-09-15 Boron containing heterocyclic compounds
US06/434,602 US4490265A (en) 1981-12-10 1982-10-15 Lubricating compositions
US06/476,513 US4533480A (en) 1983-03-18 1983-03-18 Bis(hydrocarbyloxy methylated) boron-containing, heterocyclic compounds and lubricating compositions containing the same
US476513 1983-03-18
US434602 1999-11-05

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EP87107835A Division EP0241949A3 (en) 1982-09-15 1983-08-22 Lubricating compositions

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EP0120036A1 EP0120036A1 (en) 1984-10-03
EP0120036A4 true EP0120036A4 (en) 1985-10-14

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EP87107835A Withdrawn EP0241949A3 (en) 1982-09-15 1983-08-22 Lubricating compositions
EP19830902871 Withdrawn EP0120036A4 (en) 1982-09-15 1983-08-22 HETEROCYCLIC COMPOUNDS CONTAINING BORON AND LUBRICATING OILS CONTAINING THE SAME.

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EP87107835A Withdrawn EP0241949A3 (en) 1982-09-15 1983-08-22 Lubricating compositions

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EP (2) EP0241949A3 (ja)
JP (1) JPS59501788A (ja)
WO (1) WO1984001169A1 (ja)

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JP2004083746A (ja) 2002-08-27 2004-03-18 Nippon Oil Corp 内燃機関用潤滑油組成物
JP4999266B2 (ja) * 2004-10-19 2012-08-15 Ｊｘ日鉱日石エネルギー株式会社 酸化防止剤及びそれを含有する潤滑油組成物
US8343901B2 (en) * 2010-10-12 2013-01-01 Chevron Oronite Company Llc Lubricating composition containing multifunctional hydroxylated amine salt of a hindered phenolic acid
US8334242B2 (en) 2010-10-12 2012-12-18 Chevron Oronite Company Llc Lubricating composition containing multifunctional borated hydroxylated amine salt of a hindered phenolic acid
CN116816504A (zh) 2022-03-22 2023-09-29 通用电气公司 调节表面的ζ电位以减少燃料和油系统中的焦炭

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Also Published As

Publication number Publication date
EP0241949A3 (en) 1988-11-17
EP0241949A2 (en) 1987-10-21
JPS59501788A (ja) 1984-10-25
EP0120036A1 (en) 1984-10-03
WO1984001169A1 (en) 1984-03-29

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