US2032279A - Treatment of lubricating oils - Google Patents
Treatment of lubricating oils Download PDFInfo
- Publication number
- US2032279A US2032279A US752311A US75231134A US2032279A US 2032279 A US2032279 A US 2032279A US 752311 A US752311 A US 752311A US 75231134 A US75231134 A US 75231134A US 2032279 A US2032279 A US 2032279A
- Authority
- US
- United States
- Prior art keywords
- oil
- chromium
- lubricating oils
- treatment
- deposits
- 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
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
- 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
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
Definitions
- This invention is for improvements relating to lubricating oils and. has for an object toprevent their deterioration in use without detriment to their lubrication properties.
- a lubricant comprises a lubricating oil having dispersed therein a small quantity of an organic compound of chromium.
- an oil-soluble compound 25 of chromium is selected in order that the compound may more easily be mixed with and uni formly distributed throughout the oil.
- a feature of the invention ccnsists in that chromium oleate is added to the'lubrieating cii.
- chromium oleate was added to a mineral oil to the extent of about by weight of the oil and it was found that, not only was the formation of the deposits minimized over a range of temperature corresponding with the temperatures obtaining in an internal-combustion engine, but also such deposits as were formed had a soft 5 and non-adherent character as distinct from the hard, varnish-like deposits obtained when an un-- treated mineral oil was subjected to a similar test.
- a fluid lubricant comprising a lubricating oil having dispersed therein chromium oleate up to 1% by weight of the oil, the said chromium oleate being effective as an anti-sludging agent in 25 an internal combustion engine.
- a lubricating oil having dispersed therein up to 1% of a sludge-preventing substance characterized by an addition of chromium oleate. the said chromium oleate being efiective as an antisludging agent in an internal combustion engine.
- a fluid lubricant comprising a lubricating oil having dispersed therein about 1% by weight of chromium oleate, the said chromium oleate being effective as an anti-sludging agent in an internal combustion engine.
Landscapes
- 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)
- Lubrication Of Internal Combustion Engines (AREA)
Description
-Patented Feb. 25, 1936 TREATMENT or LUBRICATING OILS Alan Arnold Griflith and William Helmore, South Farnborough, England, assignors to C. C. Wakefield & Company Limited, London, England, a British company No Drawing. Application November 9, 1934, Serial No. 752,311. In Great Britain August 1,
3' Claims.
This invention is for improvements relating to lubricating oils and. has for an object toprevent their deterioration in use without detriment to their lubrication properties.
5 It is well-known that one of the chief defects experienced with lubricants, for example in internal-combustion engines, is the formation in-- the oil, often after a very short period of running, of sludge and gums and other deposits. It is thought that these deposits are caused by oxidation of the oil at the high temperatures obtaining on the cylinder and piston walls and in the bearings. Oxidation may also occur when the oil mixed with air is in the form of a mist in the crankcase.
It has already been proposed in prior British specifications Nos. 295,230 and 398,222 to minimize theformation of these deposits by adding to the oil small quantities of organic compounds .of
lead and of tin.
According to this invention, a lubricant comprises a lubricating oil having dispersed therein a small quantity of an organic compound of chromium. Preferably an oil-soluble compound 25 of chromium is selected in order that the compound may more easily be mixed with and uni formly distributed throughout the oil.
A feature of the invention ccnsists in that chromium oleate is added to the'lubrieating cii. A further feature or? intention cnnsasts in that the chromium compound is added to the oil in quantities of about 1% by weight of the oil.
It has been found that the organic compounds of chromium have a markedly beneficial effect as 35 set out below when used, for example, in the lubricating oils of internal-ccmhusticsa shoes or the like.
In one test, chromium oleate was added to a mineral oil to the extent of about by weight of the oil and it was found that, not only was the formation of the deposits minimized over a range of temperature corresponding with the temperatures obtaining in an internal-combustion engine, but also such deposits as were formed had a soft 5 and non-adherent character as distinct from the hard, varnish-like deposits obtained when an un-- treated mineral oil was subjected to a similar test.
It has also been observed that when using an oil,,treated with an organic chromium compound, the corrosion of the steel and iron surfaces was less than when an untreated oil was used. The use of these compounds should greatly reduce the wear of the steel cylinder walls and cast-iron pistons of internal-combustion engines.
It will be appreciated that the present invention is not restricted to any particular type of lubricating oil but that all lubricating oils, whether vegetable, mineral or blended oils, may be treated.
We claim:--
1. A fluid lubricant comprising a lubricating oil having dispersed therein chromium oleate up to 1% by weight of the oil, the said chromium oleate being effective as an anti-sludging agent in 25 an internal combustion engine.
2. A lubricating oil having dispersed therein up to 1% of a sludge-preventing substance characterized by an addition of chromium oleate. the said chromium oleate being efiective as an antisludging agent in an internal combustion engine.
3. A fluid lubricant comprising a lubricating oil having dispersed therein about 1% by weight of chromium oleate, the said chromium oleate being effective as an anti-sludging agent in an internal combustion engine.
ALAN ARNOLD GRIFFITH. WILLIAM HELMORE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21570/33A GB423441A (en) | 1933-08-01 | 1933-08-01 | Improvements in the treatment of lubricating oils |
Publications (1)
Publication Number | Publication Date |
---|---|
US2032279A true US2032279A (en) | 1936-02-25 |
Family
ID=10165134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US752311A Expired - Lifetime US2032279A (en) | 1933-08-01 | 1934-11-09 | Treatment of lubricating oils |
Country Status (2)
Country | Link |
---|---|
US (1) | US2032279A (en) |
GB (1) | GB423441A (en) |
-
1933
- 1933-08-01 GB GB21570/33A patent/GB423441A/en not_active Expired
-
1934
- 1934-11-09 US US752311A patent/US2032279A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB423441A (en) | 1935-02-01 |
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