GB1480387A - Lubricating oil - Google Patents
Lubricating oilInfo
- Publication number
- GB1480387A GB1480387A GB41738/74A GB4173874A GB1480387A GB 1480387 A GB1480387 A GB 1480387A GB 41738/74 A GB41738/74 A GB 41738/74A GB 4173874 A GB4173874 A GB 4173874A GB 1480387 A GB1480387 A GB 1480387A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chlorinated
- composition
- sulphur
- lubricating
- containing compound
- 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
Links
Classifications
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- 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
- C10M141/08—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 sulfur-, selenium- or tellurium-containing compound
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
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- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
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- 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
- C10M2207/027—Neutral salts thereof
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- 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
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- 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
- C10M2207/122—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms monocarboxylic
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- 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
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- C10M2207/124—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms containing hydroxy groups; Ethers thereof
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- C10M2207/22—Acids obtained from polymerised unsaturated acids
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- C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
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- C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
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- C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
- C10M2211/024—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aromatic
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- C10M2211/04—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen, halogen, and oxygen
- C10M2211/044—Acids; Salts or esters thereof
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- C10M2211/06—Perfluorinated compounds
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- C10M2211/08—Halogenated waxes
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- C10M2213/02—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
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- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
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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
- 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
- C10M2221/00—Organic macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2221/00—Organic macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2221/02—Macromolecular compounds obtained by reactions of monomers involving only carbon-to-carbon unsaturated bonds
-
- 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
- C10M2223/12—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions obtained by phosphorisation of organic compounds, e.g. with PxSy, PxSyHal or PxOy
-
- 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
- C10M2225/00—Organic macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2225/04—Organic macromolecular compounds containing phosphorus as ingredients in lubricant compositions obtained by phosphorisation of macromolecualr compounds not containing phosphorus in the monomers
- C10M2225/041—Hydrocarbon polymers
-
- 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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/02—Unspecified siloxanes; Silicones
-
- 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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
-
- 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
-
- 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
- C10N2040/25—Internal-combustion engines
-
- 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
- C10N2040/25—Internal-combustion engines
- C10N2040/251—Alcohol fueled engines
-
- 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
- C10N2040/25—Internal-combustion engines
- C10N2040/255—Gasoline engines
-
- 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
- C10N2040/25—Internal-combustion engines
- C10N2040/255—Gasoline engines
- C10N2040/28—Rotary engines
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
1480387 Lubricants ATLANTIC RICHFIELD CO 25 Sept 1974 [26 Sept 1973] 41738/74 Heading C5F A lubricating oil composition comprises a major proportion by weight of oil of lubricating viscosity, at least one sulphur-containing compound having the structure wherein each R<SP>1</SP> is a monovalent essentially hydrocarbon radical containing from 1 to 30 carbon atoms, x and y are from 1 to 9, and at least one naphthyl amine having the following structure wherein R<SP>2</SP> is selected from H and R<SP>1</SP>, a is from 0 to 7 and D is R<SP>1</SP>, the sulphur-containing compound and the naphthyl amine being present in an amount sufficient to improve the resistance to oxidation of the lubricating composition. The composition may include (a) various alkali metal or alkaline earth metal sulphonates, many sulphonic acids for deriving these sulphonates being listed, (b) basic polyamines substituted with long chain hydrocarbons, e.g. polyamino-polyalkylene alkenyl succinimides, (c) phosphosulphurized hydrocarbon polymer, (d) alkali metal or alkaline earth metal phenates or sulphurized phenates, (e) chlorinated hydrocarbonaceous compounds, e.g. chlorinated paraffins, chlorinated olefins, chlorinated polyolefins, chlorinated cycloaiphatic compounds, chlorinated aromatics, chlorinated esters of fatty, naphthenic and resin acids or (f) one or more of other detergents, anti-wear agents, antiforam agents, corrosion inhibitors, metal deactivators, pour point depressants, oiliness agents and viscosity index improvers. In Example 3, a composition is discribed containing mineral oil, sulphurized calcium phenate, hydrocarbon olefin polymer containing basic nitrogen, calcium sulphonate, chlorinated paraffin, the sulphur-containing compound and phenyl α-naphthyl amine. In Example 6, a composition is described containing mineral oil, the sulphur-containing compound of Example 3, phenyl α-naphthyl amine, the mineral oil containing tetrapropenyl succinic anhydride, and lauryl oxyacetic acid as rust inhibitors and a silicone antifoam agent. The lubricating compostion may be used for railroad diesel engines, gas turbine and steam turbine engines.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16194771A | 1971-07-09 | 1971-07-09 | |
US401093A US3909420A (en) | 1971-07-09 | 1973-09-26 | Lubricant composition containing thiadiazoles and napthylamines as antioxidants and method of lubrication using said composition |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1480387A true GB1480387A (en) | 1977-07-20 |
Family
ID=26858298
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2962472A Expired GB1401076A (en) | 1971-07-09 | 1972-06-23 | Lubricating oil composition |
GB41738/74A Expired GB1480387A (en) | 1971-07-09 | 1974-09-25 | Lubricating oil |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2962472A Expired GB1401076A (en) | 1971-07-09 | 1972-06-23 | Lubricating oil composition |
Country Status (4)
Country | Link |
---|---|
US (2) | US3775321A (en) |
CA (1) | CA983914A (en) |
FR (1) | FR2244813B1 (en) |
GB (2) | GB1401076A (en) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3775321A (en) * | 1971-07-09 | 1973-11-27 | Atlantic Richfield Co | Lubricating oil composition |
US4136043A (en) * | 1973-07-19 | 1979-01-23 | The Lubrizol Corporation | Homogeneous compositions prepared from dimercaptothiadiazoles |
US4140643A (en) * | 1974-05-16 | 1979-02-20 | The Lubrizol Corporation | Nitrogen- and sulfur-containing lubricant additive compositions of improved compatibility |
US3977986A (en) * | 1975-06-02 | 1976-08-31 | The United States Of America As Represented By The Secretary Of The Navy | Silicone-base fire resistant hydraulic fluid |
US3966623A (en) * | 1975-06-05 | 1976-06-29 | Texaco Inc. | Corrosion inhibited lube oil compositions |
US4110234A (en) * | 1975-11-05 | 1978-08-29 | Uniroyal, Inc. | Antioxidant stabilized lubricating oils |
US4102796A (en) * | 1976-04-01 | 1978-07-25 | Chevron Research Company | Lubricating oil antioxidant additive composition |
US4086172A (en) * | 1976-04-01 | 1978-04-25 | Chevron Research Company | Lubricating oil additive composition |
US4171270A (en) * | 1976-12-27 | 1979-10-16 | Texaco Inc. | Sulfurized overbased calcium alkylphenolate lubricant composition |
US4169799A (en) * | 1976-12-27 | 1979-10-02 | Texaco Inc. | Lubricating oil composition |
US4171269A (en) * | 1976-12-27 | 1979-10-16 | Texaco Inc. | Sulfurized lubricant composition |
US4178253A (en) * | 1977-04-05 | 1979-12-11 | Ciba-Geigy Corporation | Corrosion inhibited lubricant compositions |
US4122021A (en) * | 1977-05-16 | 1978-10-24 | Uniroyal, Inc. | Antioxidant stabilized lubricating oils |
US4216100A (en) * | 1978-08-03 | 1980-08-05 | Texaco Inc. | Pentaerythritol-fatty acid ester lubricant composition |
US4534873A (en) * | 1983-09-28 | 1985-08-13 | Clark Gary G | Automotive friction reducing composition |
US4990273A (en) * | 1985-09-30 | 1991-02-05 | Union Oil Company Of California | Lubrication anti-wear additive |
CA1272183A (en) * | 1986-02-04 | 1990-07-31 | Noboru Ishida | Lubricating oil compositions |
US5275630A (en) * | 1986-11-06 | 1994-01-04 | The Lubrizol Corporation | Metal salt fuel additive stabilized with a thiadiazole |
US4849118A (en) * | 1987-09-30 | 1989-07-18 | Amoco Corporation | Chlorine-free silver protective lubricant composition (III) |
US5368758A (en) * | 1992-10-13 | 1994-11-29 | The Lubrizol Corporation | Lubricants, greases and aqueous fluids containing additives derived from dimercaptothiadiazoles |
US5538652A (en) * | 1993-05-03 | 1996-07-23 | Mobil Oil Corporation | Dimercaptothiadiazole-mercaptan coupled compounds as multifunctional additives for lubricants and fuels |
JP2840526B2 (en) * | 1993-06-24 | 1998-12-24 | 出光興産株式会社 | Lubricating oil composition |
EP0759818A4 (en) * | 1994-05-13 | 1997-08-20 | Henkel Corp | Aqueous metal coating composition and process with reduced staining and corrosion |
AU695224B2 (en) * | 1994-08-31 | 1998-08-06 | Mobil Oil Corporation | Dimercaptothiadiazole-mercaptan coupled compounds as multifunctional additives for lubricants and fuels |
US5801130A (en) * | 1995-12-22 | 1998-09-01 | Exxon Research And Engineering Company | High load-carrying turbo oils containing amine phosphate and dimercaptothiadiazole derivatives |
US5726133A (en) * | 1996-02-27 | 1998-03-10 | Exxon Research And Engineering Company | Low ash natural gas engine oil and additive system |
US6207623B1 (en) | 2000-01-14 | 2001-03-27 | Exxonmobil Research And Engineering Company | Industrial oils of enhanced resistance to oxidation |
US8084404B2 (en) | 2005-07-20 | 2011-12-27 | Chevron Oronite Company Llc | Crankcase lubricating oil composition for protection of silver bearings in locomotive diesel engines |
JP5249683B2 (en) * | 2008-08-29 | 2013-07-31 | Jx日鉱日石エネルギー株式会社 | Lubricating oil composition in contact with silver-containing material |
US8969273B2 (en) | 2009-02-18 | 2015-03-03 | Chevron Oronite Company Llc | Lubricating oil compositions |
US8841243B2 (en) | 2010-03-31 | 2014-09-23 | Chevron Oronite Company Llc | Natural gas engine lubricating oil compositions |
US8796192B2 (en) | 2010-10-29 | 2014-08-05 | Chevron Oronite Company Llc | Natural gas engine lubricating oil compositions |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2009480A (en) * | 1932-06-10 | 1935-07-30 | Goodrich Co B F | Antioxidant |
US2719126A (en) * | 1952-12-30 | 1955-09-27 | Standard Oil Co | Corrosion inhibitors and compositions containing same |
US3236774A (en) * | 1962-08-10 | 1966-02-22 | Eastman Kodak Co | Antioxidant composition and synthetic lubricant containing it |
US3513084A (en) * | 1968-06-28 | 1970-05-19 | Du Pont | Lubricant producing system |
US3663561A (en) * | 1969-12-29 | 1972-05-16 | Standard Oil Co | 2-hydrocarbyldithio - 5 - mercapto-1,3,4-thiadiazoles and their preparation |
US3775321A (en) * | 1971-07-09 | 1973-11-27 | Atlantic Richfield Co | Lubricating oil composition |
-
1971
- 1971-07-09 US US00161947A patent/US3775321A/en not_active Expired - Lifetime
-
1972
- 1972-06-19 CA CA145,063A patent/CA983914A/en not_active Expired
- 1972-06-23 GB GB2962472A patent/GB1401076A/en not_active Expired
-
1973
- 1973-09-26 US US401093A patent/US3909420A/en not_active Expired - Lifetime
-
1974
- 1974-09-24 FR FR7432158A patent/FR2244813B1/fr not_active Expired
- 1974-09-25 GB GB41738/74A patent/GB1480387A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3909420A (en) | 1975-09-30 |
GB1401076A (en) | 1975-07-16 |
CA983914A (en) | 1976-02-17 |
FR2244813A1 (en) | 1975-04-18 |
US3775321A (en) | 1973-11-27 |
FR2244813B1 (en) | 1979-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |