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
  • C10M2207/02—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
  • 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
  • C10M2207/123—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
• • 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
  • C10M2207/22—Acids obtained from polymerised unsaturated 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
  • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
  • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
  • C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
• • 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
  • C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
  • C10M2219/088—Neutral salts
• • 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
  • C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
  • C10M2219/089—Overbased salts
• • 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

• a high efiiciency, lubricating oil composition comprises (a) a large amount of lubricating oil, (b) a 4,4'-thiobis phenol, and (c) a substituted phenol having at least one tertiary butyl group in the ortho position to the hydroxyl group.
• Said lubricating oil composition is, for example, a high efliciency turbine oil.
• This invention relates to a high efliciency lubricating oil composition and also to a process for preparing the lubricating oil composition, belonging to a mineral oil that exhibits surpassing efliciency, from a feedstock oil being devoid particularly of oxidation stability and eifect of using additives.
• the inventors of the present invention have successfully overcome a series of such diificulties. It is therefore the primary object of the present invention to provide turbine oil, exhibiting surpassing efficiency comparable to a lubricating oil composition which makes use of a highly refined base oil, from crude oil.
• a lubricating base oil having a property resembling that of a highly refined oil, from a conventional special crude oil.
• the property of the thus obtained lubricating base oil is however found to be inferior to the property in respect of stability, particularly in respect of anti-corrosive property because of 3,745,117 Patented July 10, 1973 ice copresence of aromatic components such as sulfuror nitrogen-containing heterocyclic compounds involved therein.
• the present invention is, on the other hand, capable of substantially eliminating these defects.
• the present invention covers a highly eflicient lubricating oil composition belonging to a mineral oil through the combined use of (a) 4,4-mono-, dior tri-thiobis (2,6-di-tbutylphenol), (b) other additives, and (c) a base oil having reduced oxidation stability and poor elfect from additives.
• 4,4-mono-, dior tri-thiobis (2,6-di-t-butylphenol) to be used in the present invention are the compounds represented by the following general formula (wherein represents an integer of from 1 to 3).
• Compounds to be included in the additives in said (b) are a substituted phenol having 1 or 2 tertiary butyl groups in the ortho position to the hydroxyl group thereof, for example, 2,6-di-t-butyl-p-cresol, 2,6-di-t-butyl-4- ethylphenol, 4,4'-methylenebis (2-t-butyl-5-methylphc- 1101) and also 4,4-bis (Z-t-butyl-S-methylphenol) and the like.
• thiobisphenols and substituted phenols assures successful providing of a lubricating oil composition, having a favorable oxidation stability, from a base oil abundant in sulfur content. It also provides a lubricating oil composition, having surpassing property, from a high pressure hydrogen refined oil having less aromatic content. Furthermore, it is naturally a matter of course that other additives of conventional use, such as an antifoamer and a rust preventive or the like can also be used in combination with lubricating oil composition of this invention.
• the amount of a thiobisphenol and the substituted phenols to be used in the present invention may vary depending on the diversified uses of the lubricating oil.
• the ratio of said thiobisphenols to the substituted phenols in amount may also very accordingly.
• a thiobisphenol is used in an amount of less than 5% by weight based on the weight of total composition, preferably in a range of from 0.01 to 0.1% by weight, while substituted phenols in an amount of less than 5% by Weight, preferably in a range of from 0.1 to 0.5% by Weight, respectively.
• from about 1 to about 50 parts by weight of the substituted phenol is used for each part by weight of the thiobis phenol.
• the use can be made of any one of various lubricating base oils having the sulfur content of approximately 5% by Weight or below.
• the lubricating base oil contains 0.50% of 2,6-di-tertiary butyl paracresol. This base oil used is from the Middle East and is solvent refined It contains 0.52% of sulfur and has 31.50 centistokes of kinematic viscosity at 37.8 C. and 5.18 centistokes of kinematic viscosity at 98.9 0., respectively.
• the lubricating base oil contains 0.50% of 2,6-di-tertiary butyl paracresol. This base oil used is from the Middle East and is solvent refined. It contains 0.32% of sulfur and has 30.30 centistokes of kinematic viscosity at 37.8 C. and 5.09 centistokes of kinematic viscosity at 98.9 C respectively.
• Examples 41-53 By using a solvent refined lubricating base oil from the Middle East crude oil containing, as a base oil, 0.52% of sulfur, and exhibiting a kinematic viscosity of 1.50 centistokes at 37.8 C. and 5.18 centistokes at 989 C., a rust preventive (Lubrizol 859) and also using various additives illustrated in Table 3, a catalytic oxidation test was conducted. The adding ratio of the additives and the testing results are as per illustrated in Table 3 to follow.
• thiobis phenol is 4,4'-thiobis (2,6-di-t-butylbutylphenol) 4.
• a composition of matter comprising a 4,4'-thiobis phenol as defined in claim 1 and a substituted phenol as defined in claim 1.
• composition of matter comprising from about 1 to about 50 parts by weight of a substituted phenol as defined in claim 1 per each part by weight of a thiobis phenol defined in claim 1.
• a lubricating oil composition characterized by comprising (a) a major amount of lubricating base oil; (b) from about 0.01 to 0.1 weight percent of a 4,4'- 5 thiobis phenol represented by the general formula CH: OH;
• HsC-C-CH H;C-l-CHI HiCC--CH: HIC- I CH:
• V CHI 7 15 References Cited UNITED STATES PATENTS 12/1962 Cofiield 2S248.2
• Example 44 replace Column 4,- Table 3, second column, Example 47 replace "(0.1) With --(O.2)

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)
• Anti-Oxidant Or Stabilizer Compositions (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=14814668

Family Applications (1)

Country Status (2)

Cited By (3)

Families Citing this family (6)

• 1970
  • 1970-12-29 JP JP45121577A patent/JPS4913484B1/ja active Pending
• 1971
  • 1971-07-19 US US00164063A patent/US3745117A/en not_active Expired - Lifetime

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