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US2813830A - Hydrocarbon oil compositions - Google Patents

Hydrocarbon oil compositions Download PDF

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Publication number
US2813830A
US2813830A US45728654A US2813830A US 2813830 A US2813830 A US 2813830A US 45728654 A US45728654 A US 45728654A US 2813830 A US2813830 A US 2813830A
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Prior art keywords
oil
hydrocarbon
induction
percent
phenol
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Charles E Trautman
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Gulf Research and Development Co
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Gulf Research and Development Co
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    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00Compounds containing elements of Groups 3 or 13 of the Periodic System
    • C07F5/02Boron compounds
    • C07F5/04Esters of boric acids
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    • C10M1/00Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
    • C10M1/08Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
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    • C10M2203/00Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10Petroleum or coal fractions, e.g. tars, solvents, bitumen
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    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026Butene
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    • C10M2205/22Alkylation reaction products with aromatic type compounds, e.g. Friedel-crafts
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    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2240/00Specified uses or applications of lubricating compositions
    • C10N2240/66Medical uses

Description

i l l i l 1 nite 2,8l3,83h Patented Nov. 19, 1957 2,813,830 HYDROCARBON 01L coMPosirioNs Charles E. Trautman, Cheswick, Pa., assignor to Gulf Research & Development Company, Pittsburgh, Pa, a corporation of Delaware No Drawing. Application September Ztl, W54, Serial No. 457,286

10 Claims. (Cl. 252-496) This invention relates to hydrocarbon oil compositions and more particularly to hydrocarbon compositions highly resistant to undesirable oxidational changes.

The compositions of my invention constitute superior hydrocarbon oil compositions possessing increased resistance to oxidation and sludge formation. These compositions comprise in combination a major proportion of a hydrocarbon oil and minor proportions of each of an alkyl substituted phenol antioxidant and an orthoboric acid triester. The orthoboric acid triester is of the general formula (RO)3B in which R represents an organic radical in which at least 2 carbon atoms are joined to the carbon atom attached to the oxygen. in the preferred embodiment of my invention an alkyl phenol antioxidant such as 2,6 di-tertiary-butyI-4-methylphenol constitutes the alkyl substituted phenol antioxidant and the orthoboric acid tri ester is a trialkyl orthoborate ester derived from orthoboric acid and a secondary aliphatic alcohol having 3 to 18 carbon atoms. Best results are secured when the concentration of the orthoboric acid triester is about 6.6001 to about one percent by weight, and preferably about 0.0005 to about 0.5 percent by weight, and the concentration of the alkyl substituted phenol antioxidant is about 0.01 to about 10 percent by weight, and preferably about 0.1 to about 2 percent by weight. The optimum amount of each additive may vary depending upon the particular oil and the severity of the conditions to which it is sub jected. The additive constituents are present in the hydrocarbon oil in an amount sufficient to produce a composition having an induction period longer than the sum of the induction periods of two compositions produced by incorporating each of the additive constituents alone in portions of the same hydrocarbon oil.

The hydrocarbon oil employed in the compositions of my invention comprises any of the conventional hydrocarbon oils utilized for the lubrication of metal surfaces, as heat transfer fluids, transformer oils, insulating oils, or switch oils. Thus, the hydrocarbon oils can be derived from mineral lubricating oil fractions such as those secured from the refining of paraflinic oil stocks, naphthenic oils, and also from oil-bearing shale. In addition, the hydrocarbon oil can be derived from synthetic hydrocarbon oils such as those secured from the Fischer-Tropsch synthesis. The exact grade of hydrocarbon oil to be used in the compositions of my invention is dependent upon the ultimate use to which the composition is put. Thus, if the compositions of my invention are employed for the lubrication of automobiles, the hydrocarbon oil constit uent of the composition will consist of a refined mineral lubricating oil of lubricating viscosity for the particular point of application. In other words a conventional gear oil may be used where the composition is used for the lubrication of the gears, and generally a less viscous, more highly refined oil, will be used in the crankcase.

The finished compositions of my invention may also contain other additive agents including oiliness and extreme pressure agents, such as aromatic chlorinecontain- 0 pentanol-3, dissopropylcarbinol,

ing compounds, stabilized chlorinated parafiins, sulfurized fatty oils and high molecular weight ketones and esters; viscosity index improvers, such as high molecular weight polymers of isobutylene and the polymers of methacrylic esters; pour point depressants, such as a condensation product of chlorinated wax and naphthalene and a condensation product of chlorinated wax and phenol followed by further condensation of this reaction product with organic acids; detergents, such as nickel naphthenate, metal salts of ethylhexyl salicylate, and metal salts of alkyl substituted phenol sulfides; and foam inhibitors, such as organo-silicon oxide condensation products, and organosilicol condensation products.

The alkyl substituted phenol antioxidants of the type herein involved comprise the class of phenol derivatives which confer resistance to oxidation when added to a hydrocarbon oil. The term phenol as used herein and in the appended claims includes phenol and its methyl homologues such as the cresols and xylenols as well as the corresponding bis-phenols. Particularly suitable alkyl phenols are those wherein the sum of the number of carbon atoms present in the alkyl groups occupying the positions ortho to the hydroxyl group is four or more. Pan ticularly suitable alkyl substituents are those containing from four to eight carbon atoms, such as the butyl, amyl, hexyl, heptyl and octyl groups. While the phenol may contain only one such substituent, good results are ob tained when using a phenol antioxidant containing two or three of such substituentsv The alkyl substituents can be either normal, secondary or tertiary alkyl groups.

Examples of some of the alkyl substituted phenol antioxidants which can be used in the compositions of the invention are 2,6-di-tertiary-butyl-4-methylphenol; bis(2-hydroxy-3-tertiary-butyl-S-methylphenyl) methane; 1,1-bis(2- hydroxy-3-tertiary-butyl-S-methylphenyl)ethane; l,l bis- (2-hydroxy-3-tertiary-butyl-S-methylphenyl propane; 2,4- di-tertiary-butyl-5-methylphenol; 2,4,6 tri-tertiary-butylphenol; Z-tertiary-butyl 4 methylphenol; butylated hy droxy-anisole; 2,6-di-tertiary-butyl-4-phenylpheuol; 2,6-disecondary-amylphenol; 4-octylphenol; etc.

The orthoboric acid triesters of this invention are of the general formula (RO)3B in which R represents an organic radical in which at least 2 carbon atoms are joined to the carbon atom attached to the oxygen. Examples of these orthoboric acid triesters include the triesters of boric acid with phenols, tertiary alcohols, and secondary alcohols such as tri-para-tertiary-butyl-phenyl-borate; tri-tertiary-butyl-borate; tricyclohexyl-borate; and tribornyl-borate. In the preferred embodiment of my invention the orthoboric acid triester has the general formula (XO)3B in which X represents a secondary aliphatic alkyl radical having 3 to 18 carbon atoms and thus comprises a triestcr of orthoboric acid and a secondary aliphatic alcohol having 3 to 18 carbon atoms. The preferred secondary alc o hols are those having 2 or 3 carbons joined to either or both of the carbon atoms adjacent to the hydroxyl-bearing carbon atom. Examples of secondary alcohols that are useful for the preparation of orthoboric acid triesters include diisopropylcarbinol, diethylcarbiuol, methylisobutylcarbinol, diisobutylcarbinol, 3,9-diethyl-6-hydroxytridecane.

The orthoboric acid triesters used in the compositions of the invention were prepared by reacting boric acid and the corresponding alcohol, with the alcohol being employed as a solvent in several instances, and with benzene or toluene as the solvent in others; and then refluxing the mixture in an apparatus equipped with a Water trap. The preparation of the trialkyl orthoboric acid esters of methylisobutylcarbinol, 3,9-diethyl-6-hydroxytridecane and diisobutylcarbinol is given below.

Example I The reaction to prepare the trialkyl orthoboric acid ester of pentanol-3 was carried out in a suitable reaction vessel equipped with a mechanical stirrer, a water trap fitted with a water-cooled condenser, and a dropping funnel. 20.6 parts by weight of orthoboric acid and 100 parts by weight of pentanol-3 were added to the flask and the mixture heated. After approximately one hour, the reflux temperatures reached 92 C., the vessel temperature reached 115 C., and 10 parts by weight of water had collected in the water trap. 20 parts by weight of pentanol-3 were then added slowly from the dropping tunnel to the mixture. After another two hours of heating, the reflux temperature reached 98 C., the reaction vessel temperature reached 130 C. and a total of 18 parts by weight of water had collected in the trap. The reaction mixture was clear and remained clear after standing for 18 hours. The mixture was then distilled and the fraction boiling between 232.5 C. and 239 C. at a pressure of 750 mm. of mercury was collected. This fraction constituted 74 parts by weight of tris(3-pentoxy)- boron or a yield of about 81.5 percent of the theoretical.

Example 11 Similar type apparatus to that mentioned in Example I was utilized in the preparation of tri--(diisopropylcarbinyl) borate. Thus, 20.6 parts by weight of boric acid and 156 parts by weight of diisopropylcarbinol were refluxed together for approximately two hours, at a reflux temperature of 102 C. 18 parts by weight of water were collected in the trap and then 61.7 parts by weight of unreacted alcohol were recovered. The reaction mixture was cooled and the crystalline product separated by filtering. 80.1 parts by weight of crude tris(2,4-dimethyl-3- pentoxy)boron were obtained constituting a 67.7 percent theoretical yield. This product was dissolved in ether and filtered to remove any unreacted boric acid. The product was then recovered by evaporation of the ether and was recrystallized from 95 percent ethyl alcohol. A total of 59.6 parts by weight, equivalent to a 50.3 percent theoretical yield, of a white crystalline compound having a melting point of 57.5 to 58.5 C. was recovered.

Example III Example IV Similar type apparatus to that mentioned above was utilized in the preparation of the triester of boric acid and 3,9-diethyl-6-hydroxytridecane. Thus, 7.5 parts by weight of boric acid and 93.4 parts by weight of 3,9-diethyl-6-hydroxytridecane were refluxed together for approximately 2 /2 hours at a vessel temperature of about 250 C. 86 parts by weight of toluene were added to the mixture to facilitate removal by azeotropic distillation of the water formed during the reaction. 5 .Sparts by weight of water were recovered. Upon distillation under vacuum at a pressure of 1 mm. of mercury and a temperature of between 255 and 265 C., 76.3 parts by weight of crude tris(3,9-diethyl-6-tridecoxy)boron were obtained constituting 81 percent theretical yield.

Example V acid and 144 parts by weight of diisobutylcarbinol were refluxed together and 14 parts by weight of water were collected in the trap. The crude tris(2,6-dimethyl-4-heptoxy)boron was recrystallized from ether and pentane, and yielded 70.8 parts by weight or a 48.3 percent theoretical yield of crystalline material having a melting point of 9899 C.

Tests were run to determine the induction period for sludge formation for a transformer-type mineral oil base having the following typical inspections:

Gravity, AP} 28.3 Viscosity 100 F., SUV 54.4 Viscosity 210 F., SUV 33.6 Flash point, C. O. C. F Q 275 Fire point, C. O. C. F 310 Pour point, F 55 Neutralization No 0.01 Sulfur (B) percent 0.10

In addition, the induction periods for sludge formation of mixtures of this oil base with an alkyl phenol, and of the oil base plus a trialkyl orthoborate were also determined. These were then compared with the induction period of the composition containing the mineral oil base plus both the alkyl phenol and the trialkyl orthoborate.

The induction period for sludge formation was determined by the time required until sludge began to form under the conditions set forth in A. S. T. M. D670-42T, method A, as described in A. S. T. M. Standards on Electrical Insulating Materials, January 1950, modified as follows. Instead of subjecting three samples to the test and determining the amount of sludge formed at the end of the three given periods of time, five samples each composition tested were placed in the apparatus. After starting the test, the samples were periodically checked and the time prior to the first evidence of sludge formation was determined.

Example VI Oil+0.3 wt. percent 2,6-di- Oil+0.3 Wt. Oil+0.05 wt. tertiarybutylpercent 2,6-dipercent tri- 4-n1ethyl- Oil tertiarybutyl- (methylisophenol+0.05

4-methylbutylcarbinyl) wt. percent phenol borate tri (methylisobutylcarbinyl) borat-e Induction period in days 0 10 0 24 Example VII 0i1+0.3 wt. percent 2,6di- Oil+0.3 wt. Oi1+0.01 wt. tertiarybutylpercent 2,6-dipercent tri- 4-n1ethyl- Oil tertiarybutyl- (methylisopheno1+0.01 4-methy1- butylcarbinyl) wt. percent phenol borate tri (methylisobutylcarbinyl) borate Induction period in days 0 10 0 21 Example VIII Oil+0.3 wt. percent 2,6 Oil-H13 wt. 0il+0.05 wt. di-tertiarypercent 2,6- percent tributyl-4- Oil di-tertlary- (diisobutylmethylbutylicarbiuyl) phenol+0.05 methylborate wt. percent phenol tri-(dilsobutyl-carbinybborate Induction period in days 0 10 0 22 Example IX Example X 01'.l+0.3 wt. Oil+0.3 wt. percent 2,6- percent bis- Oil+0.3 wt. Oil-+0.01 wt. di-tertiary- Oil+0.3 wt. (2-hydroxypercent 2,6- percent tributylt- 5 percent bis- Oil+0.05 Wt. 3-t-butyl-5- Oil di-tertiary- (diisobutylmethyl- (2-hydroxypercent trimethyl-. butyl tcarbinyl) phenol+0.01 Oil 3-t-butyl-5- (diisobutylphenyD- methylborate wt. percent methylcarbmyl) methane phenol tri(diisophenyl) borate +0.05 wt. butyl-carmethane percent tribinyDborate (diisobutylcarbinyl) 1O borate Induction period in days O 2 18 Induction period in days 1 4 0 7 Example X It can be seen from the foregoing that the induction period for the combination of phenol and borate in the 0 0 E oil is much greater than that of the phenol alone or gi i f z fg f fi of the borate alone, and that a true synergistlc action 1s 1- I' l ii C- 1 bu tyla carbinyl) phen0l+0.05 effected between the two. I have found that not only bm-ic do the additive combinations of my invention confer 1mp carbinyl) proved sludge-suppressing and antioxidant characteristics 00mm upon hydrocarbon oils but also these compositions possess improved lubricating properties as indicated by Falex gfgjf Period in 1 5 Wear Test data, and in addition the corrosive effect of u 1 the oil base on bearing metals is inhibited. Moreover,

Example XI the triesters of orthoboric acid with phenols, secondary alcohols, or tertiary alcohols are exceptionally resistant I to hydrolysis. In this respect these esters are very supeg zf rior to orthoboric acid triesters of primary alcohols, which Oii+0.3wt. Oi1+0.05 wt. tri-tertiarv were found to readily hydrolyze under normal Working percent2,4 .6- percent tributylphenol Mammy (dfisobutyb conditions whenemployed as an additive for a lubricant butylphenol carbinyl) percent trio1- transformer 011,

home I do not wish to be bound by any explanation for the I orat synergistic effect of the phenol antioxidant and orthoboric acid triester Within the hydrocrabon oil composi- Induction period in tions of my invention. However, it is possible that this days i o 4 synergistic efiect is due to the simultaneous action of the phenol antioxidant and orthoboric acid triester on Example X11 separate portions of the sludge-forming constituents of 40 the hydrocarbon oil. As a result the striking synergistic Oi1+0 3 Wt eifect of my invention is obtained.

I) p t While the character of the invention has been described 253%? f gggg gfig gfiflgg in detail, and examples of the compositions given, this il s d ry (d b tsl +0.05wt. has been done by Way of illustration only and with the amylphenol 533 4 intention that no limitation should be imposed upon the a y invention thereby. It Will be apparent to those skilled I I n I I home in the art that numerous modifications and variations of the illustrations and examples may be effected in the O 5 practice of the invention, and accordingly these modi- Induction period in days ficatlons and variations should be construed as mcluded within the scope of the claims appended hereto. By way Example of example, in place of the hydrocarbon oils which have been disclosed, other hydrocarbon oils having similar on OW Oil-l-OJS wt. properties may be utilized. In addition, various relative Ou+0 3 Wt jg f fggggggga concentrations of phenol antioxidant to orthoborate ester on percent p- (diisobutyl- +0.05 wt. within the composltions of my invention may be emoctylphenol carbinyl) percent tri- I d boratc (diisobutyb P Oye czgblzliltyl) The compositions of my invention comprise useful transformer oils, switch oils, insulating oils, lubricating g oils, turbine oils, and the like. They are possessed of ag 1 2 0 4 superior sludge-suppressing characteristics and of superior anti-corrosive and lubricating properties.

This application is a continuation-in-part of my co- Example XIV pending application, Serial No. 227,937, filed May 23, 1951 andnowabandoned.

oil-+0.3 t. I claim: OHM-3 Wt Ofl+0 05 wt 1. A composition consisting essentially of a major pro- 01 pefegnglhui e cer tt i dr ganis ole portion of a hydrocarbon 011 and minor proportions of f g' g g fg each of an alkyl phenol antioxidant wherein the alkyl borate (diisgbutlvlgroup contains 4 to 8 carbon atoms and a trialkyl ortho- -1 borate having the general formula (XO)3B in which X represents a secondary alkyl radical having 5 to 9 car- Induction period in bon atoms, the additive constituents being present in an days 1 2 0 6 amount sufliclent to produce a composition having an induction period longer than the sum of the induction periods of two compositions produced by incorporating each of the additive constituents alone in portions of the same hydrocarbon oil.

2. A composition in accordance with claim 1 in which the alkyl phenol comprises from between about 0.1 to 2 percent by weight, and the trialkyl orthoborate comprises between about 0.0005 to about 0.5 percent by weight.

3. A composition consisting essentially of a major proportion of a hydrocarbon oil and minor proportions of each of 2,6-di-tertiary-butyl-4-methylphenol and a tri alkyl orthoborate having the general formula (XO)3B in which X represents a secondary aliphatic alkyl radical having 5 to 9 carbon atoms, the additive constituents being present in an amount suflicient to produce a composition having an induction period longer than the sum of the induction periods of two compositions produced by incorporating each of the additive constituents alone in portions of the same hydrocarbon oil.

4. A composition in accordance with claim 3 in which the 2,6-di-tertiary-butyl-4-methylphenol comprises between about 0.1 to 2 percent by weight, and the trialkyl orthoborate comprises between about 0.0005 to about 0.5 percent by weight.

5. A composition consisting essentially of a major proportion of a hydrocarbon oil and minor proportions of each of an alkyl phenol antioxidant wherein the alkyl group contains 4 to 8 carbon atoms and tris(2,6- dimethyl-4-heptoxy)boron, the additive constituents being present in an amount sufficient to produce a composition having an induction period longer than the sum of the induction periods of two compositions produced by incorporating each of the additive constituents alone in portions of the same hydrocarbon oil.

6. A composition consisting essentially'of a major proportion of a hydrocarbon oil and minor proportions of each of 2,4,6-tri-tertiary-butylphenol and tris(2,6-dimethy1-4-heptoxy)boron, the additive constituents being present in an amount suflicient to produce a composition having an induction period longer than the sum of the induction periods of two compositions produced by incorporating each of the additive constituents alone in portions of the same hydrocarbon oil.

7. A composition consisting essentially of a major proportion of a hydrocarbon oil and minor proportions of each of 2,6-di-tertiary-butyl-4-methylphenol and tris- (2,6-dimethyl-4heptoxy)boron, the additive constituents being present in an amount suflicient to produce a com position having an induction period longer than the sum of the induction periods of two compositions produced by incorporating each of the additive constituents alone in portions of the same hydrocarbon oil.

8. A composition consisting essentially of a major proportion of a hydrocarbon oil and minor proportions of each of bis(2-hydroxy-3-tertiary butyl 5 methy1- phenyl)rnethane and tris(2,6-dimethyl-4-heptoxy)boron, the additive constituents being present in an amount sufficient to produce a composition having an induction period longer than the sum of the induction periods of two compositions produced by incorporating each of the additive constituents alone in portions of the same hydrocarbon oil.

9. A composition consisting essentially of a major proportion of a hydrocarbon oil and minor proportions of each of di-secondary-amylphenol and tris(2,6-dimethyl- 4-heptoxy)boron, the additive constituents being present in an amount sufiicient to produce a composition having an induction period longer than the sum of the induction periods of two compositions produced by incorporating each of the additive constituents alone in portions of the same hydrocarbon oil.

10. A composition consisting essentially of a major proportion of a hydrocarbon oil and minor proportions of each of 2,6-di-tertiary-butyl-4-methylphenol and tris- (4-methyl-2-pentoxy)boron, the additive constituents being present in an amount sufiicient to produce a composi tion having an induction period longer than the sum of the induction periods of two compositions produced V by incorporating each of the additive constituents alone in portions of the same hydrocarbon oil.

References Cited in the file of this patent UNITED STATES PATENTS 2,053,474 Graves et al. Sept. 8, 1936 2,160,917 Shoemaker et a1 June 6, 1939 2,202,825 Brandes June 4, 1940 2,225,533 Dewey Dec. 17, 1940 2,462,616 Eby Feb. 22, 1949

Claims (1)

1. A COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A HYDROCARBON OIL AND MINOR PROPORTIONS OF EACH OF AN ALKYL PHENOL ANTIOXIDANT WHEREIN THE ALKYL GROUP CONTAINS 4 TO 8 CARBON ATOMS AND A TRIALKYL ORTHOBORATE HAVING THE GENERAL FORMULA (XO)3B IN WHICH X REPRESENTS A SECONDARY ALKYL RADICAL HAVING 5 TO 9 CARBON ATOMS, THE ADDITIVE CONSTITUENTS BEING PRESENT IN AN AMOUNT SUFFICIENT TO PRODUCE A COMPOSITION HAVING AN INDUCTION PERIOD LONGER THAN THE SUM OF THE INDUCTION PERIODS OF TWO COMPOSITIONS PRODUCED BY INCORPORATING EACH OF THE ADDITIVE CONSTITUENTS ALONE IN PORTIONS OF THE SAME HYDROCARBON OIL.
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US2975134A (en) * 1956-02-24 1961-03-14 Union Oil Co Antiwear lubricants containing boron esters
US2989467A (en) * 1957-12-30 1961-06-20 Standard Oil Co Lubricating oil composition containing 3:2alpha-glycol borate compounds
US2989468A (en) * 1957-12-30 1961-06-20 Standard Oil Co Lubricating oil composition containing 3:2beta-glycol borate compounds
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Cited By (28)

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Publication number Priority date Publication date Assignee Title
US2962446A (en) * 1956-02-24 1960-11-29 Union Oil Co Silicon hydraulic fluids containing boron esters
US2975134A (en) * 1956-02-24 1961-03-14 Union Oil Co Antiwear lubricants containing boron esters
US2989467A (en) * 1957-12-30 1961-06-20 Standard Oil Co Lubricating oil composition containing 3:2alpha-glycol borate compounds
US2989468A (en) * 1957-12-30 1961-06-20 Standard Oil Co Lubricating oil composition containing 3:2beta-glycol borate compounds
US3076013A (en) * 1958-03-24 1963-01-29 Standard Oil Co Process for preparing a complex mixture of aliphatic glycol borates
US3509054A (en) * 1958-05-05 1970-04-28 Ethyl Corp Liquid hydrocarbon compositions of boron esters
US3044998A (en) * 1958-11-13 1962-07-17 Standard Oil Co Borated monomers and polymers
US3086355A (en) * 1959-02-19 1963-04-23 Standard Oil Co Hydrocarbon jet fuel containing decaborane and alkanols or phenols
US3007873A (en) * 1959-06-25 1961-11-07 Shell Oil Co Stable mineral oil compositions
US3145258A (en) * 1959-08-21 1964-08-18 Anaconda Wire & Cable Co Treated insulation impregnant for high voltage electrical cable
US3163705A (en) * 1959-08-21 1964-12-29 Anaconda Wire & Cable Co Oil insulated impregnant for high voltage electrical apparatus
US3177267A (en) * 1959-08-31 1965-04-06 Universal Oil Prod Co Retarding cracking of rubber due to ozone with a boron acid or borate ester
US3317436A (en) * 1962-02-26 1967-05-02 Chemische Fabrik Hoesch Kg Liquid stabilizers for vinyl chloride polymers comprising a lead salt dissolved in an alkyl phenol
US3298964A (en) * 1962-04-02 1967-01-17 Chemische Fabrik Hoesch Kg Liquid stabilizers for vinyl chloride resins comprising metal salts of epoxidized fatty acids
US3673093A (en) * 1966-06-03 1972-06-27 Montedison Spa Liquid dielectric composition of alkyl benzene and an antioxidation stabilizer
US3639275A (en) * 1968-06-10 1972-02-01 Chevron Res Stable dielectric fluid for electrical discharge machining comprising a mineral oil, a metal sulfonate and a phenolic antioxidant
US4961868A (en) * 1983-01-10 1990-10-09 Mobil Oil Corporation Grease composition
US4743386A (en) * 1983-01-10 1988-05-10 Mobil Oil Corporation Grease compositions containing phenolic- or thio-amine borates and hydroxy-containing soap thickeners
US4519926A (en) * 1983-02-18 1985-05-28 Standard Oil Company (Indiana) Polyborate esters and their use in lubricants
US5084194A (en) * 1984-03-07 1992-01-28 Mobil Oil Corporation Grease composition
US4600517A (en) * 1984-08-22 1986-07-15 Mobil Oil Corporation Grease composition containing boronated alcohols, and hydroxy-containing thickeners
US4780227A (en) * 1984-08-22 1988-10-25 Mobil Oil Corporation Grease composition containing borated alkoxylated alcohols
US4655948A (en) * 1985-08-27 1987-04-07 Mobil Oil Corporation Grease compositions containing borated catechol compounds and hydroxy-containing soap thickeners
US4781850A (en) * 1985-08-27 1988-11-01 Mobil Oil Corporation Grease compositions containing borated catechol compounds and hydroxy-containing soap thickeners
US4828734A (en) * 1985-08-27 1989-05-09 Mobil Oil Corporation Grease compositions containing borated oxazoline compounds and hydroxy-containing soap thickeners
US4623360A (en) * 1985-10-31 1986-11-18 Ethyl Corporation Fuel compositions
WO1990013618A1 (en) * 1989-05-01 1990-11-15 Mobil Oil Corporation Mixed alkoxylated alcohol-hydroquinone/resorcinol borates-antioxidants
US4985157A (en) * 1989-05-01 1991-01-15 Mobil Oil Corporation Mixed alkoxylated alcohol-hydroquinone/resorcinol borates-antioxidants

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