US2991250A - Marine turbine lubrication - Google Patents
Marine turbine lubrication Download PDFInfo
- Publication number
- US2991250A US2991250A US649001A US64900157A US2991250A US 2991250 A US2991250 A US 2991250A US 649001 A US649001 A US 649001A US 64900157 A US64900157 A US 64900157A US 2991250 A US2991250 A US 2991250A
- Authority
- US
- United States
- Prior art keywords
- oil
- proportion
- weight
- polyalkylenepolyamine
- rust
- 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
Links
- 238000005461 lubrication Methods 0.000 title description 3
- 239000000203 mixture Substances 0.000 claims description 10
- 239000013067 intermediate product Substances 0.000 claims description 9
- 239000013556 antirust agent Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000007795 chemical reaction product Substances 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 239000010688 mineral lubricating oil Substances 0.000 claims description 3
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000002530 phenolic antioxidant Substances 0.000 claims description 2
- WWKDGLRDWDSGLU-UHFFFAOYSA-N tris(2-chloropropoxy)-sulfanylidene-$l^{5}-phosphane Chemical compound CC(Cl)COP(=S)(OCC(C)Cl)OCC(C)Cl WWKDGLRDWDSGLU-UHFFFAOYSA-N 0.000 claims description 2
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 claims 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 2
- RINCXYDBBGOEEQ-UHFFFAOYSA-N succinic anhydride Chemical compound O=C1CCC(=O)O1 RINCXYDBBGOEEQ-UHFFFAOYSA-N 0.000 claims 2
- 239000003921 oil Substances 0.000 description 20
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 14
- 239000010723 turbine oil Substances 0.000 description 14
- -1 alkylated phenols Chemical class 0.000 description 10
- 239000003963 antioxidant agent Substances 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 239000000654 additive Substances 0.000 description 9
- 230000003078 antioxidant effect Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 150000002763 monocarboxylic acids Chemical class 0.000 description 5
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 4
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 4
- GGQRKYMKYMRZTF-UHFFFAOYSA-N 2,2,3,3-tetrakis(prop-1-enyl)butanedioic acid Chemical compound CC=CC(C=CC)(C(O)=O)C(C=CC)(C=CC)C(O)=O GGQRKYMKYMRZTF-UHFFFAOYSA-N 0.000 description 4
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 4
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 4
- 239000005642 Oleic acid Substances 0.000 description 4
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000005069 Extreme pressure additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- GVPWHKZIJBODOX-UHFFFAOYSA-N dibenzyl disulfide Chemical compound C=1C=CC=CC=1CSSCC1=CC=CC=C1 GVPWHKZIJBODOX-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LFMQNMXVVXHZCC-UHFFFAOYSA-N 1,3-benzothiazol-2-yl n,n-diethylcarbamodithioate Chemical compound C1=CC=C2SC(SC(=S)N(CC)CC)=NC2=C1 LFMQNMXVVXHZCC-UHFFFAOYSA-N 0.000 description 1
- PFEFOYRSMXVNEL-UHFFFAOYSA-N 2,4,6-tritert-butylphenol Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 PFEFOYRSMXVNEL-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- UOJYYXATTMQQNA-UHFFFAOYSA-N Proxan Chemical compound CC(C)OC(S)=S UOJYYXATTMQQNA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229960004424 carbon dioxide Drugs 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- PGAXJQVAHDTGBB-UHFFFAOYSA-N dibutylcarbamothioylsulfanyl n,n-dibutylcarbamodithioate Chemical compound CCCCN(CCCC)C(=S)SSC(=S)N(CCCC)CCCC PGAXJQVAHDTGBB-UHFFFAOYSA-N 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- RQVGZVZFVNMBGS-UHFFFAOYSA-N n-octyl-n-phenylaniline Chemical compound C=1C=CC=CC=1N(CCCCCCCC)C1=CC=CC=C1 RQVGZVZFVNMBGS-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 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
- 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
- C10M141/10—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 phosphorus-containing compound
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/12—Partial amides of polycarboxylic 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
- C10M2215/26—Amines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/046—Polyamines, i.e. macromoleculars obtained by condensation of more than eleven amine monomers
-
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
-
- 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
- C10M2223/047—Thioderivatives not containing metallic elements
-
- 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
- C10N2040/135—Steam engines or turbines
Definitions
- Antioxidants which have been used, for example, 'incl-ude: phenolic-type compounds, particularly alkylated phenols, such as 2,6-di-tertiary-butyl-4-methyl phenol, 2,4,6-tri-tertiary-butyl-phenol and the like; aryl amines, such as phenyl-alpha-naphthyl amine, butyl-alpha-naphthyl amine, etc.; and alkylated diphenyl amines, such as octyldiphenyl amine.
- anti-rust agents have been utilized in turbine oils.
- One class of such anti-rust agents are theproducts produced by first reacting a monocarboxylic acid with a polyalkylenepolyamine and then reacting the product so formed with an alkenyl succinic acid anhydride.
- This class of anti-rust agents and their manner ofpreparation are fully described in U.S. Patent No. 2,568,876, issued September 25, 1951, to R. V. White et al. As shown in that patent, the monocarboxylic acid is reacted With the polyalkylenepolyamine in a mole proportion varying between about 1 and about x-l to 1,
- alkenyl succinic acid anhydride is then reacted with the intermediate product in a molar proportion varying between about x1 and about 1 to 1, respectively; the sum of the number of moles of the monocarboxylic acid and of the alkenyl succinic acid anhydride reacted with each 'tinued under these conditions for three hours. .ti'o'n product had an N.N. of 56.6.
- the above object is weight, of theactive anti-rust accomplished by the addition to the turbine oil of a small mole of the polyalkylenepolyamine being no greater than x.
- a specific product of this type is one prepared from oleic acid, triethylenetetramine and tetrapropenyl succinic acid anhydride, the preparation of which is' illustrated by the following example.
- tris-(2-chloropropyl)-thionophosphate has not been proposed heretofore as an extreme pressure agent for lubricating oils. Accordingly, it is considered that the present invention embraces the use Reissued July 4, 1961 of this material as an extreme pressure agent, not only in turbine oils, but in lubricating oils in general.
- the ability of tris-(Z-chloropropyl)-thionophosphate as an extreme pressure additive and particularly its unique ability as an extreme pressure additive for use in turbine oils in comparison with a number of compounds heretofore recognized in the art as extreme pressure additives is illustrated by the data presented in Table I.
- This table shows the results of antioxidant, anti-rust and extreme pressure tests conducted on a typical turbine oil composition containing the usual amounts of antioxidant and anti-rust additives and on this same turbine oil composition having added thereto (a) diiferent known extreme
- the amount of tris-(Z-chloropropyl)-thionophosphate to be used as an extreme pressure agent in lubricating oils, including oxidation and rust-inhibited turbine oils, will range generally from about 0.25% to about 5.0%, the usual amount being from 1.0% to about 3.0%.
- Turbine oils in which the tris-(2-chloropropy1)-thionophosphate is employed may suitably contain from about 0.05 to about 2.0%, by weight, of antioxidant and from about 0.01% to about 1%, by weight, of anti-rust agent.
- oil compositions contemplated herein may also contain minor amounts of other additives, designed to improve the properties thereof in other respects, such as V.I. improvers, pour depressants, defoamants, etc.
- the turbine oil used as the base oil in all of the tests was a 400" SUV at 100 F., solvent-refined Mid-Continent oil containing 0.25% of 2,6-ditertiary butyl paracresol, a commercial antioxidant additive and 0.1% of an anti-rust agent prepared from oleic acid, triethylenetetramine and tetrapropenyl succinic acid anhydride after the fashion of Example I, hereinabove.
- a method of lubricating a marine turbine and the associated reduction gears which comprises applying to the relatively moving parts thereof a composition comprising a major proportion of mineral lubricating oil, a minor proportion, from about 0.05% to about 2%, by weight, of a phenolic antioxidant, a minor proportion, from about 0.01% to about 1%, by weight, of an antirust agent consisting of a reaction product obtained by reacting a monocarboxylic acid with a polyalkylenepolyamine having one more nitrogen atom per molecule than there are alkylene groups in the molecule, in a molar proportion varying between about 1 and about x-l to 1, respectively, wherein x represents the number of nitrogen atoms in the polyalkylenepolyamine molecule, to produce an intermediate product, and reacting an alkenyl succinic acid anhydride with said intermediate product, in a molar proportion varying between about x-l and about 1 to 1, respectively; the sum of the number of moles of said monocarboxylic acid
- a method of lubricating a marine turbine and the associated reduction gears which comprises applying to the relatively moving parts thereof a composition comprising a major proportion of mineral lubricating oil, a minor proportion, from about 0.05 to about 2%, by weight, of a 2,6-ditertiary butyl paracresol, a minor proportion, from about 0.01% to about 1%, by weight, of a reaction product formed by reacting about one and one-third molar proportions of oleic acid with 1 molar proportion of triethylenetetramine to rform an intermediate product and then reacting about 1 molar proportion of the intermediate product with 2 molar proportions of tetrapropenyl succinic acid anhydride and a minor proportion, from about 0.25% to about 5%, by weight, of tn's-(2-ch1oropropy1)-thionophosphate.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL104744D NL104744C (enrdf_load_stackoverflow) | 1957-03-28 | ||
| NL220048D NL220048A (enrdf_load_stackoverflow) | 1957-03-28 | ||
| US649001A US2991250A (en) | 1957-03-28 | 1957-03-28 | Marine turbine lubrication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US649001A US2991250A (en) | 1957-03-28 | 1957-03-28 | Marine turbine lubrication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2991250A true US2991250A (en) | 1961-07-04 |
Family
ID=24603080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US649001A Expired - Lifetime US2991250A (en) | 1957-03-28 | 1957-03-28 | Marine turbine lubrication |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2991250A (enrdf_load_stackoverflow) |
| NL (2) | NL104744C (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3193501A (en) * | 1962-04-02 | 1965-07-06 | Sinclair Research Inc | Extreme pressure lubricant compositions |
| US3361403A (en) * | 1966-03-09 | 1968-01-02 | Motorola Inc | Cathode ray tube yoke mounting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2178514A (en) * | 1937-01-05 | 1939-10-31 | Lubri Zol Corp | Lubricating composition |
| US2344988A (en) * | 1938-11-21 | 1944-03-28 | Standard Oil Co | Compounded mineral oil |
| US2568876A (en) * | 1949-11-14 | 1951-09-25 | Socony Vacuum Oil Co Inc | Reaction products of n-acylated polyalkylene-polyamines with alkenyl succinic acid anhydrides |
| US2722517A (en) * | 1950-09-30 | 1955-11-01 | Exxon Research Engineering Co | Lubricating oil modifiers |
-
0
- NL NL220048D patent/NL220048A/xx unknown
- NL NL104744D patent/NL104744C/xx active
-
1957
- 1957-03-28 US US649001A patent/US2991250A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2178514A (en) * | 1937-01-05 | 1939-10-31 | Lubri Zol Corp | Lubricating composition |
| US2344988A (en) * | 1938-11-21 | 1944-03-28 | Standard Oil Co | Compounded mineral oil |
| US2568876A (en) * | 1949-11-14 | 1951-09-25 | Socony Vacuum Oil Co Inc | Reaction products of n-acylated polyalkylene-polyamines with alkenyl succinic acid anhydrides |
| US2722517A (en) * | 1950-09-30 | 1955-11-01 | Exxon Research Engineering Co | Lubricating oil modifiers |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3193501A (en) * | 1962-04-02 | 1965-07-06 | Sinclair Research Inc | Extreme pressure lubricant compositions |
| US3361403A (en) * | 1966-03-09 | 1968-01-02 | Motorola Inc | Cathode ray tube yoke mounting device |
Also Published As
| Publication number | Publication date |
|---|---|
| NL220048A (enrdf_load_stackoverflow) | |
| NL104744C (enrdf_load_stackoverflow) |
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