US2498628A - Lubricants and extreme pressure additives therefor - Google Patents

Lubricants and extreme pressure additives therefor Download PDF

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Publication number
US2498628A
US2498628A US708794A US70879446A US2498628A US 2498628 A US2498628 A US 2498628A US 708794 A US708794 A US 708794A US 70879446 A US70879446 A US 70879446A US 2498628 A US2498628 A US 2498628A
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Prior art keywords
extreme pressure
phosphorus
oil
additive
lubricants
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Expired - Lifetime
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US708794A
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English (en)
Inventor
Elmer B Cyphers
Jr Louis J Osborne
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Standard Oil Development Co
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Standard Oil Development Co
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Publication date
Priority to BE477120D priority Critical patent/BE477120A/xx
Application filed by Standard Oil Development Co filed Critical Standard Oil Development Co
Priority to US708794A priority patent/US2498628A/en
Priority to FR952724D priority patent/FR952724A/fr
Priority to GB24827/47A priority patent/GB631851A/en
Priority to DEST151A priority patent/DE831577C/de
Application granted granted Critical
Publication of US2498628A publication Critical patent/US2498628A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • 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
    • C10M2201/04—Elements
    • C10M2201/043—Sulfur; Selenenium; Tellurium
    • 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
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • 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
    • C10M2205/22—Alkylation reaction products with aromatic type compounds, e.g. Friedel-crafts
    • 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
    • C10M2207/40—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
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • 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
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
    • 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
    • C10M2223/041—Triaryl phosphates
    • 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
    • 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
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/10—Form in which the lubricant is applied to the material being lubricated semi-solid; greasy
    • 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
    • C10N2070/00—Specific manufacturing methods for lubricant compositions
    • C10N2070/02—Concentrating of additives

Definitions

  • the present invention relates to lubricants and extreme pressure additives therefor. It pertains more particularly to lubricants of the general type mentioned above, wherein materials such as phosphorus and sulfur, and compounds thereof, are included in mineral and/or fatty oil bases to form high pressure lubricating compositions.
  • Lubricants of the general character referred to above may consist of blends of a petroleum oil with a saponiflable 011 containing as extreme pressure agents, either as free elements or as chemical compounds, sulfur, chlorine, phosphorus and the like.
  • the added compounds are usually and preferably/somewhat inactive chemically at ordinary opefating temperatures, becoming more reactive with the metal surfaces, however, when such surfaces are subjected to the high temperatures which result from the frictional heat generated by the transmission of power through a gear train.
  • the microscopically thin protective films which are formed on metal surfaces in the manner referred to above consist of metal sulfides, chlorides, phosphides and the like.
  • metal sulfides, chlorides, phosphides and the like when sulfur, chlorine, phosphorus and like mate- 2 rials are used on steel gears (such as for example, hypoid gears in automobile driving axles), where unit pressures are very high at times, iron sulfides, chlorides, phosphides and the like are formed. Analogous compounds are formed with other metals.
  • inorganic materials such as the phosphorus sulfides, for example, P483, elemental phosphorus, arsenic, selenium, lead compounds,
  • phosphorus sulfldes may be dissolved in and/or reacted with various fatty bodies such as fatty-oils, fatty acids, sulfurized fatty oils, halogenated hydrocarbons and the like to impart E. P. characteristics thereto.
  • Such compositions may then be used directly as extreme pressure lubricants or, more commonly, they are supplied as concentrated additives for use in small quantities in mineral 011 base lubricants.
  • organic phosphates for example, tricresyl phosphate
  • tricresyl phosphate may be used in fatty oils or acids or in mineral oil or mixtures thereof, either with or without other additives to impart certain desirable characteristics to lubricants.
  • tricresyl phosphate has been found to have certain merit as an antioxidant and as an oiliness agent.
  • a good lubricant for example, a blend of a mineral oil and a fatty oil containing sulfur and phosphorus may be increased by increasing the total phosphorus content.
  • materials such as tricresyl phosphate may be added to a lubricant containing an inorganic phosphorus compound, such as P483, for example. to increase total phosphorus content and improve extreme pressure characteristics, without increasing the corrosivity oi' the oil.
  • the over-all phosphorus content of the lubricant may be brou ht to relatively high levels, with substantially the same beneficial load bearing characteristics, without exhibiting objectionable corrosive tendencies.
  • an inorganic phosphorus compound such as phosphorus sulfide
  • an organic phosphorus containing material such as tricresyl phosphate, or in general an aryl or alkyl phosphate. or phosphite
  • has the very desirable quality of imparting good extreme phosphorus containing additives effects a new and highly u eful result, making it possible to increase considerably the overall phosphorus content of the lubricant and thus improve its extreme pressure properties materially without pro-.
  • the lubricants contemplated by our invention may also contain other additives such as oxidation inhibitors, pour point depressors', and the like. They may contain various other organic or inorganic compounds, or free elements, including sulfur, chlorine, arsenic, selenium, tellurium, soaps, vegetable oils and/or other known ingredients. It will be understood that the various sulfides of phosphorus and various aryl and alkyl phosphates and phosphites are contemplated as being within the scope of our invention.
  • esters of phosphoric and phosphorous acids may be used as the organic additive, and the substitution of the hydrogen atoms of phosphoric and phosphorous acids by alkyl or aryl radicals to form either complete or partial esters is contemplated.
  • One extreme pressure additive for lubricating oil which is found to be highly satisfactory, consists of the following composition:
  • EXAMPLE 1 1880 grams of natural winter sperm oil 45 and 120 grams of sulfur were stirred and heated in a beaker, raising the temperature to 385 F. and maintaining this temperature for 1 hours to permit complete reaction of the sulfur, followed by natural cooling to room temperature. The next day,'the sulfurized product was heated to 210 F. and 10 grams of phosphorus sesquisulfide (P483) was added and the temperature maintained for eight hours with constant and thorough stirring, followed by natural cooling.
  • P483 phosphorus sesquisulfide
  • I Unit l-64 inch.
  • EXAMPLE 2 2117.5 grams of No. 1 lard oil, 125 grams of light mineral oil (45 S. S. U. at 210 F), 12.5 grams of sulfur monochloride, and 185 grams of sulfur were mixed and charged into an autoclave. The autoclave was then flushed with hydrogen sulfide, closed, and heated to 330-340" F. for 8 hours, maintaining a gauge pressure of approximately 7.5 lbs. of hydrogen sulfide, and
  • EXAMPLE 3 16,600 grams of natural winter sperm oil 45 was placed in a glass-lined reactor equipped with a high-speed mixer and a loose-fitting cover and heated to 280 F. with agitation. 1059.6 grams of sulfur was added and heating continued, reaching 385 F. in approximately onehalf hour. The temperature was held at 385 F. 1: 5 F. for one and one-half hours and the mixture was then cooled by circulating water through a closed coil so that the temperature fell to 210 F. in 45 minutes. 88.7 grams of phosphorus sesquisulfide was then added and the temperature maintained at 210-21J5 F. for eight hours with agitation continuing. The product was then cooled.
  • the SAE grade base gear 011 consists of:
  • the finished additives were then blended with the previously described SAE 90 grade mineral oil in the proportions of 10 parts of additive to 90 parts mineral oil by weight. In some cases tricresyl phosphate was added to the blends as shown.
  • Example A blend containing of an additive prepared as in Example 3 in 90% of mineral oil was tested with and without the addition of tributyl. phospite with the results shown below:
  • E. P. lubricants may be made by the addition to oils of various quantities of the additive composition shown in the first formula.
  • This composition consists of 89.9% sperm oil with 5.8% sulfur and P48: and tricresyl phosphate added substantially in the quantities indicated, depending on the requirements.
  • Satisfactory lubricants usually consist of mineral and/or fatty oil bases containing from 1 to of the concentrated E. P. additive. It will of course be understood that various oils, greases, fatty oils, fatty acids, etc. may be used as lubricants to which the organic and inorganic phosphorus compounds may be added in various quantities.
  • an extreme pressure oil or grease may comprise about 90% of an oil or grease base consisting of mineral, vegetable or animal oils, with or without soaps, and about 10% of a concentrated additive containing the extreme pressure compositions.
  • the additive may comprise 85% to about 96% of a fatty body, such as a fatty oil or fatty acid, from 3% to 8% of sulfur (which is preferably cooked into the fatty body), from 0.1 to 1% of P483, and from 0.2 to 20% of tricresyl phosphate added (stirred in).
  • Other compounds such as pour point depressants, oxida-- tion inhibitors, detergents, and the like, may be added as is well known in the art.
  • the additive itself may be manufactured and sold to the trade, to be incorporated in various quantities in mineral oils and other lubricants.- Depending on the properties required, the additive composition may be added to an oleaginous base in quantities as little as 2% or as great as 20%. For some special uses, the additive may Economic considerations, however, will generally limit use of the additive to the percentage ranges indicated.
  • the fatty material e. g., sperm oil, lard oil, and the like, is first sulfurized by adding 3 to 12% by weight of sulfur, with or without sulfur chloride,
  • sperm oil and lard oil which we have found very satisfactory as a base for the additive
  • other animal and vegetable oils and the fatty acids relating thereto are contemplated.
  • the fatty acids appear to be less suitable for truck gears but may be used for other purposes. Animal fats and oils are preferred.
  • other binary phosphorus compounds such as the other sulfides and the oxides "are suitable. Thus various inorganic phosphorus compounds may be added or substituted.
  • tricresyl phosphate such materials as triphenyl phosphates and other aryl phosphates and phosphites, or methyl, ethyl, or butyl phosphates and phosphites and analogous alkyl compounds, and various other organic compounds of the phosphorus acids and the like may besubstituted.
  • the percentages of these materials used will vary, depending upon their compositions, solubilities, and general eifectiveness, but in general they will be used in quantities of from 0.1 to 20%, based on the finished lubricant.
  • the inorganic materials mentioned above preferably will be used in quantities of from 0.1 to 2.0% in the additive or about 0.01 to 0.2% in the finished lubricant, depending on similar considerations.
  • the percentages given throughout this specification refer to weight, based on the total additive or lubricant composition.
  • An extreme pressure lubricant consisting essentially of about to 99% of mineral base lubricating oil and 1 to 20% of an extreme pressure additive, said additive consisting of about 100 parts by weight of a sulfurized and phosphorized fatty material and about 4 parts of a composition selected from the group consisting of tricresyl phosphite and tricresyl phosphate, said sulfurized and phosphorized fatty material being prepared by first adding about 3 to 12% by weight of sulfur to said fatty material and heating the mixture to a temperature of about 330 to 400 F. for a sufficient time substantially to complete the reaction and thereafter reacting said sulfurized material with about 0.4 to 0.5% of P453 at a temperature of about 210 to 230 F. for about 5 to 8 hours.
  • composition according to claim 1 wherein the proportions of oil and additive are about and 10%, respectively.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
US708794A 1946-11-08 1946-11-08 Lubricants and extreme pressure additives therefor Expired - Lifetime US2498628A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE477120D BE477120A (en(2012)) 1946-11-08
US708794A US2498628A (en) 1946-11-08 1946-11-08 Lubricants and extreme pressure additives therefor
FR952724D FR952724A (fr) 1946-11-08 1947-09-04 Lubrifiants et adjuvants à ceux-ci pour opérer aux pressions extrêmes
GB24827/47A GB631851A (en) 1946-11-08 1947-09-10 Lubricants and extreme pressure additives therefor
DEST151A DE831577C (de) 1946-11-08 1949-11-01 Schmiermittel, insbesondere auf Mineraloelbasis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US708794A US2498628A (en) 1946-11-08 1946-11-08 Lubricants and extreme pressure additives therefor

Publications (1)

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US2498628A true US2498628A (en) 1950-02-28

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US (1) US2498628A (en(2012))
BE (1) BE477120A (en(2012))
DE (1) DE831577C (en(2012))
FR (1) FR952724A (en(2012))
GB (1) GB631851A (en(2012))

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580005A (en) * 1947-12-31 1951-12-25 Standard Oil Dev Co Extreme pressure lubricating compositions
US2595819A (en) * 1950-01-14 1952-05-06 Standard Oil Dev Co Lubricating oil additives
US2619463A (en) * 1949-03-03 1952-11-25 Exxon Standard Sa Extreme pressure lubricant
US2696469A (en) * 1952-02-09 1954-12-07 Standard Oil Dev Co Carbon black lubricating grease
DE943485C (de) * 1952-07-03 1956-05-24 Wakefield & Co Ltd C C Zusatz zu Schmieroelen auf der Basis von Mineraloelen oder synthetischen OElen
US3033789A (en) * 1957-03-28 1962-05-08 Lubrizol Corp Foam inhibited gear lubricant composition
US3033786A (en) * 1957-03-28 1962-05-08 Lubrizol Corp Foam inhibited gear lubricant composition
US3206403A (en) * 1965-09-14 Distillate and raffinate
DE1265900B (de) * 1963-06-07 1968-04-11 Albright & Wilson Mfg Ltd Schmiermittel fuer Oberflaechen aus Aluminium
US3455844A (en) * 1963-08-08 1969-07-15 Sinclair Research Inc Sulphurized and phosphorized extreme pressure agents
US5763371A (en) * 1994-07-29 1998-06-09 Witco Corporation Ethylene compressor lubricant containing phospate ester of a monoglyceride or diglyceride

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB779698A (en) * 1952-12-10 1957-07-24 Exxon Research Engineering Co Lubricant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285853A (en) * 1934-02-23 1942-06-09 Du Pont Lubrication
US2290859A (en) * 1940-04-13 1942-07-28 Standard Oil Co Beneficiation of lubricants
US2346356A (en) * 1940-06-11 1944-04-11 Standard Oil Co Heavy duty lubricant
US2382121A (en) * 1942-10-17 1945-08-14 Pure Oil Co Lubricant and method of preparing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285853A (en) * 1934-02-23 1942-06-09 Du Pont Lubrication
US2290859A (en) * 1940-04-13 1942-07-28 Standard Oil Co Beneficiation of lubricants
US2346356A (en) * 1940-06-11 1944-04-11 Standard Oil Co Heavy duty lubricant
US2382121A (en) * 1942-10-17 1945-08-14 Pure Oil Co Lubricant and method of preparing same

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206403A (en) * 1965-09-14 Distillate and raffinate
US2580005A (en) * 1947-12-31 1951-12-25 Standard Oil Dev Co Extreme pressure lubricating compositions
US2619463A (en) * 1949-03-03 1952-11-25 Exxon Standard Sa Extreme pressure lubricant
US2595819A (en) * 1950-01-14 1952-05-06 Standard Oil Dev Co Lubricating oil additives
US2696469A (en) * 1952-02-09 1954-12-07 Standard Oil Dev Co Carbon black lubricating grease
DE943485C (de) * 1952-07-03 1956-05-24 Wakefield & Co Ltd C C Zusatz zu Schmieroelen auf der Basis von Mineraloelen oder synthetischen OElen
US3033789A (en) * 1957-03-28 1962-05-08 Lubrizol Corp Foam inhibited gear lubricant composition
US3033786A (en) * 1957-03-28 1962-05-08 Lubrizol Corp Foam inhibited gear lubricant composition
DE1265900B (de) * 1963-06-07 1968-04-11 Albright & Wilson Mfg Ltd Schmiermittel fuer Oberflaechen aus Aluminium
US3455844A (en) * 1963-08-08 1969-07-15 Sinclair Research Inc Sulphurized and phosphorized extreme pressure agents
US5763371A (en) * 1994-07-29 1998-06-09 Witco Corporation Ethylene compressor lubricant containing phospate ester of a monoglyceride or diglyceride

Also Published As

Publication number Publication date
FR952724A (fr) 1949-11-23
GB631851A (en) 1949-11-10
DE831577C (de) 1952-02-14
BE477120A (en(2012))

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