US2139335A - Lubricating oil - Google Patents
Lubricating oil Download PDFInfo
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- US2139335A US2139335A US111085A US11108536A US2139335A US 2139335 A US2139335 A US 2139335A US 111085 A US111085 A US 111085A US 11108536 A US11108536 A US 11108536A US 2139335 A US2139335 A US 2139335A
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- US
- United States
- Prior art keywords
- lubricating oil
- ether
- thiocyano
- oil
- isothiocyano
- 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.)
- Expired - Lifetime
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- 239000010687 lubricating oil Substances 0.000 title description 17
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Natural products CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 19
- 239000003921 oil Substances 0.000 description 17
- 238000005260 corrosion Methods 0.000 description 14
- 230000007797 corrosion Effects 0.000 description 14
- 239000010688 mineral lubricating oil Substances 0.000 description 12
- -1 isothiocyano amyl Chemical group 0.000 description 11
- 239000000314 lubricant Substances 0.000 description 9
- 125000000217 alkyl group Chemical group 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 5
- WIKSRXFQIZQFEH-UHFFFAOYSA-N [Cu].[Pb] Chemical group [Cu].[Pb] WIKSRXFQIZQFEH-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- NSAODVHAXBZWGW-UHFFFAOYSA-N cadmium silver Chemical compound [Ag].[Cd] NSAODVHAXBZWGW-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 229910001092 metal group alloy Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N thiocyanic acid Chemical compound SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 3
- 125000005031 thiocyano group Chemical group S(C#N)* 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 229910000978 Pb alloy Inorganic materials 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- XLJMAIOERFSOGZ-UHFFFAOYSA-N cyanic acid Chemical compound OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- JQFAZAAYBZTZOS-UHFFFAOYSA-N isothiocyanatooxyimino(sulfanylidene)methane Chemical compound S=C=NON=C=S JQFAZAAYBZTZOS-UHFFFAOYSA-N 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 101000687448 Homo sapiens REST corepressor 1 Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 102100024864 REST corepressor 1 Human genes 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
- 125000004354 sulfur functional group Chemical group 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/061—Carbides; Hydrides; Nitrides
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/16—Carbon dioxide
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/18—Ammonia
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups 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
- 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
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty 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
- C10M2207/10—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
- C10M2207/16—Naphthenic 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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; 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
- 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
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
Definitions
- Butyl alpha isothiocyano amyl other By (highly refined lubricating oils I mean My invention also contemplates the use of alviscous oils which have a minimum viscosity cohol and thiocyanic acid addition products such in the range of S. A. E. 10 oils and which have as the addition product of amyl alcohol and thio been subjected to such refining processes such cyanic acid having the formula HSCN-3C5H11OH. 20 as, for example, solvent extraction, that the par- Since these compounds are subjected to high aflinicity of the oil is markedly increased.
- alpha thiocyano ethers having the general Table] formula H Loss in mg/cmJ- R -,IJ X R' periods 45 1st 2nd 3rd in which R and R are alkyl or aralkyl radicals, Y is a thiocyano radical or an isothiocyano radical and X is either an oxygen or sulfur group. 50
- Some of the hereinbefore named compounds may not be completely soluble in the lubricant, in which case efi'ective results are obtained by suspending the inhibitor in the lubricant by means of asmall amount of a peptizing agent such as aluminum naphthenate, aluminum stearate, etc.
- a peptizing agent such as aluminum naphthenate, aluminum stearate, etc.
- An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of an ether having the general formula in which R and R are alkyl radicals, Y is a radical selected from the group consisting of a thiocyano radical and an isothiocyano radical and X is an element selected from the group consisting of oxygen and sulfur.
- An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of an alkyl thiocyano ether having the general formula about 15% of an alkyl isothiocyano ether having the general formula H R Jo R' 1 10s in which R and R are alkyl radicals.
- An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of an alkyl alpha thiocyano ether having the general formula in which R and R. are alkyl radicals.
- An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of an alkyl alpha isothiocyano ether having the general formula in which R and R are alkyl radicals.
- An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of a butyl alpha isothiocyano amyl ether.
- a corrosion inhibited lubricating oil comprising a mineral lubricating oil and 0.05 to 1% of an alkyl thiocyano ether having the general formula in which R and R are alkyl radicals, Y is a radical selected from the group consisting of a thiocyano radical and an iso thiocyano radical and X is an element selected from the group consisting of oxygen and sulfur.
- a corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to 5% of an alkyl thiocyano ether having the general formula H R-l-O-R say in which R and R are alkyl radicals.
- a corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to about 5% of an alkyl isothiocyano ether having the general formula in which R and R are alkyl radicals.
- a corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0 .05% to about 5% of an alkyl alpha thiocyano ether having the general formula in which R and R are alkyl radicals.
- a corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to about 5% of an alkyl alpha isothiocyano ether having the general formula i RCOR' NCS in which R and R are alkyl radicals.
- a corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to about 5% of a butyl alpha isothiocyano amyl ether.
- the method of preventing corrosion of bearing metal alloys selected from the group consisting of cadmium-silver alloys, cadmium-nickel alloys, and copper-lead alloys, in the presence of highly refined lubricating oils in internal combustion engines which comprises adding to said lubricating oils from about 0.05% to about 5% of an ether having the general formula in which R. and R. are alkyl radicals, Y is a radical selected from the group consisting of a thiocyano radical and an isothiocyano radical and X is an element selected from the group consisting of oxygen and sulfur.
- the method of preventing corrosion t bearing metal alloys selected from the group consisting of cadmium-silver alloys, cadmiumnickel alloys and copper-lead alloys in the presence of highly refined lubricating oils in internal combustion engines which comprises adding to said lubricating oils from about 0.05% to about of an amyl-isothiocyano butyl-thioether.
- a corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to 5% of a thio ether having the general formula in which R and R are alkyl radicals and Y is a radical selected from the group consisting of thiocyano radicals and isothiocyano radicals.
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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)
Description
aws
Patented Dec. 6, 1938 LUBRICATING OE Bernard H. Shoemaker, Hammond, Ind., assignor to Standard Oil Company, Chicago, Ill., a corporation of Indiana No Drawing. Application November 16, 1936 Serial No. 111,085
16 Claims. (Cl. 879) This invention relatestolubricants and, in parthiocyanate. The reaction involved probably is ticular, to addition agents imparting to lubrias shown by the following equation cants improved properties. RCHO+R'SH+HC1 (dry) C.RCHSR'+HOH My invention has particular utility in preventcl ing and/or inhibiting the corrosion of hard I I 5 metal alloy bearings such as copper-lead, cad- RCH SR+NQSCN'M.RCH SR +Nacl mium-nickel, and cadmium-silver bearings which, 1 S UN to a large extent, have replaced soft metal bear- Examples of the compounds contemplated ings such as Babbitt metal in the trend toward within the scope of my invention are as follows:
internal combustion engines having high com- Ethyl alpha isothiocyano ethyl ether 10 pression ratios and having increased acceleration Ethyl alpha thiocyano ethyl thio ether and increased speed characteristics. The use of Butyl alpha thiocyano ethyl thio ether the hard metal bearings has created lubrication Butyl alpha thiocyano ethyl ether and corrosion problems, particularly in connec- Amyl alpha thiocyano butyl ether tion with highly refined oils, some of which may Amyl alpha isothiocyano butyl thio ether 15 be very corrosive to the hard metal bearings. Butyl alpha isothiocyano amyl other By (highly refined lubricating oils I mean My invention also contemplates the use of alviscous oils which have a minimum viscosity cohol and thiocyanic acid addition products such in the range of S. A. E. 10 oils and which have as the addition product of amyl alcohol and thio been subjected to such refining processes such cyanic acid having the formula HSCN-3C5H11OH. 20 as, for example, solvent extraction, that the par- Since these compounds are subjected to high aflinicity of the oil is markedly increased. It temperature conditions it is highly desirable that has been found that highly refined lubricating the compounds of the aforementioned type havoils cause corrosion to alloy bearings of the cading boiling points of about 400 F. or greater be mium-silver type to the extent of 5 mg/cm and used. 25
even greater when such bearings are submerged The efiectiveness of these compounds as corrofor 25 hours or less in an air-agitated oil which sion inhibitors is demonstrated by the following has been preoxidized at about 340 F. for 25 to 50 tests which were conducted under conditionsmore hours. The motor oils may be highly refined severe than those encountered in the actual oplubricating oils as such or mixtures of highly reeration of internal combustion engines. In the 30 fined lubricating oils with less highly'refined first test the weighed bearings are placed in a lubricating oils, or stated in another way, mixhighly refined oil containing the inhibitor and tures of corrosive oils and non-corrosive oils, the oil air agitated at about 341 F. At periodic examples of the latter being lubricating oil fracintervals the bearings are removed from the oil tions from Winkler crude or crudes of the Winkbath, washed free of oil and the loss in weight 35 ler type. determined.
I have found that corrosion of hard metal alloy Each time before being replaced in the oil bearings can be inhibited and highly desirable bath the bearings are polished bright and reproperties 6 be pa ted to t ubrica ing Oil weighed and again tested for predetermined pe- 40 by addin ther o p to 5% but preferably 0.05% riods. The results obtained in this test are tabu- 40 to 1% of certain thiocyano ethers, particularly lated below.
the alpha thiocyano ethers having the general Table] formula H Loss in mg/cmJ- R -,IJ X R' periods 45 1st 2nd 3rd in which R and R are alkyl or aralkyl radicals, Y is a thiocyano radical or an isothiocyano radical and X is either an oxygen or sulfur group. 50
These compounds may be economically preher 0.1 0.0 0.0 pared by reacting an aldehyde with mercaptan ititdfz.fi'fiiffftifflff?.RTYYK 0.1 1.1 at or an alcohol in the presence of dry hydrochloric Control+.2% amyl isothiocya u y acid and Subsequently reacting the resulting cfifitfiiiaiis'c'ii i'tmi'itttaijiiI: 312 3:3 333 product with a metal thiocyanate such as sodium 55 Control Control+.2% amyl thiocyano methyl In the other test the oil containing .2% of amyl alpha thiocyano butyl ether was tested in a sixcylinder internal combustion engine having cadmium-silver bearings and copper-lead bearings and operated at about 2500 R. P. M. with an oil temperature of about 320 F. and a jacket temperature of about 250 F. The results of this test are tabulated below.
In addition to inhibiting the corrosion of hard metal alloy bearings compounds of the foregoing type when used in quantities up to 10 to 15% improve the film strength of the lubricant to which they are added and also impart to such lubricants improved extreme pressure characteristics. These compounds may also be used to improve the lubricity and other properties of lubricating oils.
Some of the hereinbefore named compounds may not be completely soluble in the lubricant, in which case efi'ective results are obtained by suspending the inhibitor in the lubricant by means of asmall amount of a peptizing agent suchas aluminum naphthenate, aluminum stearate, etc.
While I have described my invention with certain specific embodiments thereof I do not wish to be limited thereby except as defined by the appended claims which should be given the broadest interpretation permitted by the prior art.
I claim:
1. An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of an ether having the general formula in which R and R are alkyl radicals, Y is a radical selected from the group consisting of a thiocyano radical and an isothiocyano radical and X is an element selected from the group consisting of oxygen and sulfur.
2. An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of an alkyl thiocyano ether having the general formula about 15% of an alkyl isothiocyano ether having the general formula H R Jo R' 1 10s in which R and R are alkyl radicals.
4. An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of an alkyl alpha thiocyano ether having the general formula in which R and R. are alkyl radicals.
5. An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of an alkyl alpha isothiocyano ether having the general formula in which R and R are alkyl radicals.
6. An improved lubricant comprising a mineral lubricating oil and from about 0.05% to about 15% of a butyl alpha isothiocyano amyl ether.
7. A corrosion inhibited lubricating oil comprising a mineral lubricating oil and 0.05 to 1% of an alkyl thiocyano ether having the general formula in which R and R are alkyl radicals, Y is a radical selected from the group consisting of a thiocyano radical and an iso thiocyano radical and X is an element selected from the group consisting of oxygen and sulfur.
8. A corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to 5% of an alkyl thiocyano ether having the general formula H R-l-O-R say in which R and R are alkyl radicals.
9. A corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to about 5% of an alkyl isothiocyano ether having the general formula in which R and R are alkyl radicals.
10. A corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0 .05% to about 5% of an alkyl alpha thiocyano ether having the general formula in which R and R are alkyl radicals.
11. A corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to about 5% of an alkyl alpha isothiocyano ether having the general formula i RCOR' NCS in which R and R are alkyl radicals.
12. A corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to about 5% of a butyl alpha isothiocyano amyl ether.
13. The method of preventing corrosion of bearing metal alloys selected from the group consisting of cadmium-silver alloys, cadmium-nickel alloys, and copper-lead alloys, in the presence of highly refined lubricating oils in internal combustion engines which comprises adding to said lubricating oils from about 0.05% to about 5% of an ether having the general formula in which R. and R. are alkyl radicals, Y is a radical selected from the group consisting of a thiocyano radical and an isothiocyano radical and X is an element selected from the group consisting of oxygen and sulfur.
14. The method of preventing corrosion t bearing metal alloys selected from the group consisting of cadmium-silver alloys, cadmiumnickel alloys and copper-lead alloys in the presence of highly refined lubricating oils in internal combustion engines which comprises adding to said lubricating oils from about 0.05% to about of an amyl-isothiocyano butyl-thioether.
15. A corrosion inhibited lubricating oil comprising a mineral lubricating oil and from about 0.05% to 5% of a thio ether having the general formula in which R and R are alkyl radicals and Y is a radical selected from the group consisting of thiocyano radicals and isothiocyano radicals.
BERNARD H. SHOEMAICER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US111085A US2139335A (en) | 1936-11-16 | 1936-11-16 | Lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US111085A US2139335A (en) | 1936-11-16 | 1936-11-16 | Lubricating oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2139335A true US2139335A (en) | 1938-12-06 |
Family
ID=22336517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US111085A Expired - Lifetime US2139335A (en) | 1936-11-16 | 1936-11-16 | Lubricating oil |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2139335A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2824887A (en) * | 1954-02-25 | 1958-02-25 | Du Pont | Substituted ethyl alkyl isothiocyanates |
| US2847441A (en) * | 1955-04-15 | 1958-08-12 | Rohm & Haas | Aliphatic poly (oxymethylisothiocyanates) and methods for making them |
| US3223685A (en) * | 1960-12-27 | 1965-12-14 | Union Carbide Corp | 2-vinyloxyethyl thiocyanate and polymerization products thereof |
-
1936
- 1936-11-16 US US111085A patent/US2139335A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2824887A (en) * | 1954-02-25 | 1958-02-25 | Du Pont | Substituted ethyl alkyl isothiocyanates |
| US2847441A (en) * | 1955-04-15 | 1958-08-12 | Rohm & Haas | Aliphatic poly (oxymethylisothiocyanates) and methods for making them |
| US3223685A (en) * | 1960-12-27 | 1965-12-14 | Union Carbide Corp | 2-vinyloxyethyl thiocyanate and polymerization products thereof |
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