Classifications

• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
  • C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
• • C—CHEMISTRY; METALLURGY
  • 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
  • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
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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
  • C10M2207/02—Hydroxy compounds
  • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
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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
  • C10M2207/02—Hydroxy compounds
  • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
  • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/08—Aldehydes; Ketones
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/10—Carboxylix acids; Neutral salts thereof
  • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
  • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
  • C10M2207/123—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/10—Carboxylix acids; Neutral salts thereof
  • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
  • C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/10—Carboxylix acids; Neutral salts thereof
  • C10M2207/22—Acids obtained from polymerised unsaturated 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
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/40—Fatty vegetable or animal oils
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/40—Fatty vegetable or animal oils
  • C10M2207/404—Fatty vegetable or animal oils obtained from genetically modified species
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
  • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the 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
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
  • C10M2219/102—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon only in the 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
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
  • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the 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
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
  • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
  • C10M2219/106—Thiadiazoles
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
  • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
  • C10M2223/04—Phosphate esters
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
  • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
  • C10M2223/04—Phosphate esters
  • C10M2223/042—Metal salts thereof
• • 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
  • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
  • C10N2020/01—Physico-chemical properties
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/22—Metal working with essential removal of material, e.g. cutting, grinding or drilling
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/241—Manufacturing joint-less pipes
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/242—Hot working
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/243—Cold working
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/244—Metal working of specific metals
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/244—Metal working of specific metals
  • C10N2040/245—Soft metals, e.g. aluminum
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/244—Metal working of specific metals
  • C10N2040/246—Iron or steel
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/244—Metal working of specific metals
  • C10N2040/247—Stainless steel

Definitions

• ABSTRACT A dual purpose cutting oil is provided which serves as a heavy duty cutting oil and a machine lubricant.
• the oil comprises a base oil, an extreme pressure agent comprising primarily Bis (,B-chlorophenethyl) disulfide and a copper corrosion inhibitor comprising an alkyl derivative of 2,5-di-mercapto 1, 3,4-thiadiazole.
• Metal cutting and grinding have as their objective a progressive removal of metal from the work piece in the form of chips rather than by plastic reforming of the metal.
• metal cutting lubricant In the field of metal cutting, the use of single and multiple point tools is well known and a great deal of metal working lubricant is used in the metal cutting process.
• two types of lubricants are needed: a metal cutting lubricant and a machine oil.
• the cutting oil serves to remove heat generated during machining of the metal and lubricates the cutting tool against the work and chips.
• the machine oil lubricates the machine parts.
• Cutting oils are generally paraffinic or intermediate base mineral oils. These are preferred because such products generally create less fog or smoke than naphthene oil. In severe conditions, which are more normal than not in heavy duty operations, it may be necessary to use an additive package in the cutting oil. These additives will comprise extreme pressure additives,
• the invention is a lubricant which is useful as both a cutting oil and a machine lubricant which comprises a major amount of a base oil and minor amounts of Bis (B-chlorophenethyl) disulfide and minor amounts of an alkyl derivative of 2,5 di-mercapto-l,3,4-thiadiazole.
• the dual purpose oil of our invention is comprised of a base oil and additive package.
• the unique combination of additives in our oil was arrived at after many failures of so called equivalent additives in other combinations.
• each component additive in our oil is used for a purpose for which it is generally known
• the unique feature of our invention is the combination of additives which function collectively to give a single product, all the performance properties hereinafter enumerated without undesirable side effects such as malodor, corrosiveness, or instability. It was found in developing our invention that it was not enough to put together a list of additives wherein each was known in the art to impart a specific property.
• our oil usually more of our oil consists of a base oil which may be paraffinic oil of from about to 170 SUS/100F viscosity and preferably to SUS/100F viscosity. It is also acceptable to use a combination of two or more oils as a base oil wherein one oil may range from about 80 to 120, and preferably from about 85 to 105 SUS/l00F viscosity and the other oil may range from to 220 and preferably from about to SUS/100F viscosity. Paraffinic or intermediate base mineral oils are generally preferred as a base oil in our invention since they generate less fog and smoke than a naphthene oil. However, any suitable base oil may be used.
• the extreme pressure additives useful in our invention are halogenated aryl sulfides. These additives are, particularly, haloaryl polysulfides having one or more halogenated aromatic rings,which if desired can carry side chains containing halogen and/or other substituents.
• the extreme pressure additives are chlorophenyl polysulfides.
• a particularly preferred extreme pressure agent comprises primarily Bis (Ii-chlorophenyl) disulfide which is the reaction product of styrene and sulfur monochloride. This additive is present in amounts ranging from about 0.5 to 10 weight percent and preferably from about 1.0 to 5.0 weight percent of the total oil.
• a copper corrosion inhibitor is needed for the oil of our invention.
• the corrosion inhibitor which is useful for our invention is an alkyl derivative of 2,5di-mercapto-1,3,4-thiadiazole. This copper corrosion inhibitor should be present in amounts ranging from about 0.05 to 5.0 weight percent and preferably from about 0.05 to 0.5 weight percent in the oil of our invention.
• a particularly preferred copper corrosion inhibitor is described in U.S. Pat. Nos. 2,714,125; 2,714,126 and 2,983,716.
• the base oil and the two additives mentioned above will provide an acceptable dual purpose cutting oil, it is preferred that other additives be used to provide additional properties which enhance the desirability of the dual purpose cutting oil. It is particularly preferred that a rust inhibitor be used. It is particularly preferred for our invention that a combination of the extreme pressure agent and a copper corrosion inhibitor above be combined with a rust inhibitor comprising a mixture of alkylmaleic acid, phenol and lauryl acid phosphate. This three component additive system provides a particularly preferred cutting oil.
• the alkylmaleic acid should be present in amounts ranging from about 0.01 to 1.0 weight percent and preferably from about 0.02 and 0.05 weight percent.
• the lauryl acid phosphate should be present in amounts ranging from about 0.001 to 0.01 weight percent and preferably from about 0.002 to 0.005 weight percent.
• the phenol should be present in amounts ranging from trace amounts to about 0.01 weight percent. The percentage of these components is only approximate and may be varied outside of the suggested ranges wihtout departing from the scope of our invention.
• cutting oils have an oxidation inhibitor, an anti-mist additive, and an odorant.
• the oxidation inhibitor may be selected from those known in the art. A great many oxidation inhibitors are available commercially on many are hindered phenols although other types may be acceptable. Several of these might work in the cutting oil and the dual purpose cutting oil of our invention. However, it is preferred that tertiary butyl phenol or 4-methyl-2,5-ditertiary butyl phenol may be used in amounts ranging from about 0.05 to 1.0 weight percent and preferably 0.1 to 0.5 weight percent.
• An anti-mist additive is generally desirable and a few are known in the art. However, it is preferred in the cutting oil of our invention that a copolymer of ethylene and propylene be used.
• a particular preferred copolymer of ethylene and propylene has a molecular weight ranging from about 70,000 to 100,000 and a propylene content of from about 35 to 50 percent. This copolymer is usually used diluted with a paraffinic mineral oil. About 0.1 to 10.0 arid preferably about 0.5 to 5.0 weight percent of an anti-mist additive is desirable.
• the odorant in the oil of our invention may be any of those that are available in the commercial market. Generally, the choice of an odorant is important in that a specific odorant will normally mask only a few types important. In the oil of our invention, it was found that oil of citronella has performed adequately, although other odorants could have been used.
• Table I following gives three formulations of our invention which have acceptable performance properties as listed.
• Table II following, is an illustration of the problems encountered in putting together the formulation of our invention. We found that it was not enough simply to put together an additive package wherein each additive was known in the art to impart a specific property. The additives must be compatible with each other and the base oil, they must compliment each other and function together to give all the properties desired in the intended application.
• Table ll,'following shows a comparison of an oil of our invention (A) and three unsuccessful oils, B, C and D.
• the oils A, B, C and D all contain an additive package of ingredients known in the art to impart qualities which added together should result in a satisfactory dual purpose cutting oil. Yet only A was satisfactory in all respects.
• oil B which contains sulfur and chlorine extreme pressure agents with zinc dialkyl dithiophosphate copper corrosion inhibitor had the desired performance characteristic but developed an unacceptable haziness in storage.
• Oil C contained a non-corrosive extreme pressure additive and did not require a copper corrosion inhibitor. However, the odor of Oil B was considered objectionable to customers and could not be marketed. All attempts to mask the offensive odor failed.
• Oil D was an attempt to develop a suitable product without malodorous or corrosive sulfurized extreme pressure additives. A high extreme pressure level was achieved by using a relatively high concentration of a chlorinated extreme pressure additive. Oil C appeared satisfactory in laboratory tests but gave unsatisfactory maching performance in shop test. Oil A proved satisof odor and thus the selection of an odorant becomes 40 factory in every respect.
• a lubricant comprising polysulfide is present in an amount ranging from 1.0 to
• a lubricant comprising:
• I c. a minor amount of an alkyl derivative of 2,5-dimercapto-l ,3,4-thiadiazole and d. a minor amount of a mixture of alkylmaleic acid,
• a lubricant comprising:

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

Priority Applications (10)

Applications Claiming Priority (1)

Publications (1)

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Family Applications (1)

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Cited By (25)

Citations (3)

• 1974
  • 1974-11-13 US US523301A patent/US3929652A/en not_active Expired - Lifetime
• 1975
  • 1975-09-12 CA CA235,349A patent/CA1061320A/en not_active Expired
  • 1975-10-15 GB GB42119/75A patent/GB1523149A/en not_active Expired
  • 1975-10-29 SE SE7512091A patent/SE407074B/xx unknown
  • 1975-11-07 DE DE19752549952 patent/DE2549952A1/de active Pending
  • 1975-11-07 FR FR7534063A patent/FR2291264A1/fr not_active Withdrawn
  • 1975-11-10 BR BR7507394*A patent/BR7507394A/pt unknown
  • 1975-11-11 IT IT29169/75A patent/IT1049057B/it active
  • 1975-11-11 DD DD189394A patent/DD121336A5/xx unknown
  • 1975-11-13 AT AT866475A patent/AT340029B/de not_active IP Right Cessation

Patent Citations (3)

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