US2321804A - Compounded mineral oil - Google Patents
Compounded mineral oil Download PDFInfo
- Publication number
- US2321804A US2321804A US374241A US37424141A US2321804A US 2321804 A US2321804 A US 2321804A US 374241 A US374241 A US 374241A US 37424141 A US37424141 A US 37424141A US 2321804 A US2321804 A US 2321804A
- Authority
- US
- United States
- Prior art keywords
- phosphate
- oil
- aluminum
- compounded
- phosphorus
- 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
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- C07—ORGANIC CHEMISTRY
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- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
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- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/08—Esters of oxyacids of phosphorus
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- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/30—Phosphinic acids R2P(=O)(OH); Thiophosphinic acids, i.e. R2P(=X)(XH) (X = S, Se)
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- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids RP(=O)(OH)2; Thiophosphonic acids, i.e. RP(=X)(XH)2 (X = S, Se)
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- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
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- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
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- H01B3/22—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils hydrocarbons
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Definitions
- This invention relates to a new and useful composition of matter and involves a composition comprising a viscous hydrocarbon oil and polyvalent metal salt of certain substituted acids of phosphorus.
- hydrocarbon oils A characteristic which has been the subject of extensive investigation is the tendency of hydrocarbon oils to deteriorate or partially decompose and oxidize when subjected to high temperatures. This deterioration is evidenced by the deposition of adhesive deposits on hot metal surfaces'over which the hyrocarbon oil may flow. It is important that resistance to such deterioration be imparted to hydrocarbon oils, particularly to inbricating oils, in order that such compositions may be relatively free from the tendency to form such deposits even under high temperatures and severe operating conditions.
- a direct result of this type of deterioration during lubrication of internal combustion engines, such as engines of the Diesel type, is the tendency of the oil to cause or permit the sticking of piston rings.
- crankcase lubricant in internal combustion engines is subjected to extremely severe operating conditions and in engines of the Diesel type the lubricant encounters in the piston ring zone temperatures of from approximately 425 to 650 F. and pressures from the oxidizing combustion gases as high as 750 to 1150 lbs. per sq. in.
- Addition agents which render hydrocarbon oils resistant to deterioration by heat at high temperature levels in the order of those above mentioned usually impart to the oil the ability to inhibit piston ring sticking in internal combustion engines and permit longer periods of operation of such engines without the necessity of major overhauls heretofore occasioned by stuck piston rings.
- stabilizing agents which are effective at low temperatures to impart increased stability to hydrocarbon oils, or which are effective at temperatures even as high as 200 or 250 F., are often ineffective under the more severe operating conditions and higher temperature levels to which lubricating oils are subjected in Diesel engines.
- a stabilizer at atmospheric temperatures, or even temperatures as high as 200 to 300 F. gives no adequate basis for predicting the action of the same stabilizing agent at materially higher temperatures and under more severe operating conditions.
- the disclosures in the prior art relative to such stabilizers therefore cannot serve as a guide for one seeking stabilizing agents or oxidation inhibitors effective at higher temperature levels.
- the phenomena involved are catalytic in nature, are highly empirical and require extensive experimentation to determine the action of a given type of addition agent.
- the present invention involves the discovery that dispersion of polyvalent metal salts of substituted oxyacids of phosphorus in hydrocarbon oils such as mineral lubricating oil imparts new, unpredictable and highly desirable properties-to the composition. These new properties render the compounded oil particularly useful for various purposes.
- hydrocarbon oils such as mineral lubricating oil
- new properties render the compounded oil particularly useful for various purposes.
- increased resistance to deterioration at high temperature levels comprises one of the principal advantages of the compounded oils of this invention, it is to be understood that the invention is not limited to this feature, that difierent compounds of the general type herein involved vary in their degree of effectiveness and may impart one .or more other desirable properties to the lubricating composition; For example, certain of the compounds reduce the amount of wear produced as compared with a straight uncompounded mineral oil.
- the new compositions herein disclosed are more stable to heat than is a hydrocarbon oil with which the compositions are compounded.
- the new compositions of this invention are therefore useful where resistance to deterioration by heat is important.
- An example of such utility other than as a lubricating oil, comprises use as a heat transfer fluid where it may be desirable to inhibit or prevent the formation of a deposit on the metal surfaces from or to which heat is being conveyed.
- the increased resistance to oxidation imparted to the oil by the compounds of this invention will find various applications as, for instance, in an insulating, switch, or transformer oil.
- Metal salts of substituted oxyacids of phos phorus which may be added to hydrocarbon lubricating oils to provide a new composition of matter of the type herein involved comprise the salts of metals selected from Groups II, HI,IV and VI of Mendeleefl's Periodic Table of the Elements.
- R and R may be alkyl, aryl, alkaryl, aralkyl or cyclic nonbenzenoid radicals.
- Substituted phosphoric acids containing at least twelve carbon atoms are preferred. Examples of preferred type acids are alkyl or alkaryl substituted phosphoric acids having at least twelve carbon atoms in the molecular
- the broader aspects of the invention include the use of othe types of substituted oxyacids of phosphorus containing more than twelve carbon atoms. Additional examples of substituted oxyacids of phosphorus which may be used in forming the metal salts of the present invention are as follows:
- the preferred acids are substituted orthophosphoric acids and the preferred-salts comprise the aluminum, calcium, barium'and chromium salts of these acids.
- Examples of such salts are aluminum lauryl phosphate. aluminum cetyl phosphate, aluminum octadecyl phosphate, aluminum spermol" phosphate, aluminum oleyl phosphate.
- aluminum spermenyl" phosphate aluminum cetyl phenyl phosphate, aluminum dl-(amylphenyl) phosphate, aluminum naphthenyl Phosphate, calcium lauryl phosphate, calcium cetyl phosphate, calcium octadecyl phosphate, calcium spermol phosphate, calcium oleyl phosphate, calcium spermenyP' phosphate, calcium cetyl phenyl phosphate, calcium di-(amylphenyl) phosphate, calcium naphthenyl phosphate, chromium lauryl phosphate, chromium cetyl phosphate, chromium octadecyl phosphate, chromium spermol phosphate, chromium oleyl phosphate.
- chromium spermenyP phosphate chromium cetyl phenyl phosphate, chromium dl-(amylphenyl) phosphate, chromium naphthenyl phosphate, barium lauryl phosphate, barium cetyl phosphate, barium octadecyl phosphate, barium "spermoY phosphate, barium oleyl phosphate, barium spermenyl” phosphate, barium cetyl phenyl phosphate, barium di-(amylphenyl) phosphate, and barium naphthenyl phosphate.
- salts within the scope of the invention are: aluminum di-cyclohexanyl phosphate, aluminum di-stearo-glyceryl phosphate, aluminum tetra-chloro-octodecyl phosphate, aluminum di-(fi-chloro, 2-phenyl phenyl) phosphate, aluminum di-(3-methyl, 4-chloro phenyl) phosphate, calcium di-cyclohexanyl phosphate, calcium di-stearo-glyceryl phosphate, calcium tetra-chloro-octadecyl phosphate, calcium di-(6-chloro,2-phenyl phenyl) phosphate, calcium di-(S-methyl, 4-chloro phenyl) phosphate, chromium di-cyclohexanyl phosphate,
- chromium di-stearo-glyeeryl phosphate chromium tetra-chloro-octadecyl phosphate
- chromium dl-(G-chloro, 2-phenyl phenyl) phosphate chromium di-(3-methyl, 4-chloro phenyl) phosphate
- magnesium di-cyclohexanyl phosphate magnesium di-cyclohexanyl phosphate.
- magnesium di-stearo-glyceryl phosphate magnesium tetra-chloro-octadecyl phosphate, magnesium di-(S-chloro, 2-phenyl phenyl) phosphate, magnesium di-(3-methyl, 4-chloro phenyl) phosphate, magnesium lauryl phosphate, magnesium cetyl phosphate, magnesium octadecyl phosphate, magnesium spermol phosphate, magnesium oleyl phosphate, magnesium spermenyl” phosphate, magnesium cetyl phenyl phosphate, magnesium di-(amylphenyl) phosphate, magnesium naphthenyl phosphate, barium dl-cyclohexanyl phosphate, barium di-stearo-glyceryl phosphate.
- barium-tetra-chloro-octadecyl phosphate barium di-(6-chloro, 2-pheny1 phenyl) phosphate, and barium di-(3-methyl, 4-chloro phenyl) phosphate.
- the substituted oxyacids of phosphorus utilized in the present invention may be prepared by methods known in the art. For example, a mixture of a higher alcohol and phosphorus pent/oxide in ethyl ether may be refluxed for several hours. The reaction by which the substituted phosphoric acid is formed in this operation is gelieved to be represented by the following equa- TABL'I: 1
- the ethyl group in the ethyl phosphoric acid above mentioned may be hydrolyzed off to form the metal salt of the mono-alkyl-ortho-phosphoric acid, 1. e. the salt of RH2PO4.
- This type of operation is not limited to the alkyl derivatives but includes aryl-ethyl-phosphoric acid, alkarylethyl-phosphoric acid, aralkyl-ethyl-phosphoric acid and ethyl phosphoric acids containing a cyclic nonhenzenoid group.
- the salt may also be prepared by the direct neutralization of the acid as, for example, with lime where the calcium salt is to be obtained.
- Basic aluminum salts prepared by the precipitation method are preferred by reason of their low corrosivity to alloy bearing metals although the so-called normal salts are not precluded. It is also preferred to maintain the amount of coprecipitated alkali metal salt in the heavy metal compounds at a minimum because the alkali metal salts decrease the stability 01' the oil solution in the presence of water.
- the calcium salts may also be prepared in the nonaqueous environment by the reaction of calcium carbide with the tree substituted acids of phosphorus.
- Thealuminum salts may also be prepared in an environment substantially free of water by the reaction of aluminum chloride with the free substituted acids of phosphorus.
- aluminum salts have properties different from the salts prepared by precipitation from aqueous solutions.
- the salts prepared in a nonaqueous environment are soft, low melting solids, while the corresponding salts prepared by precipitation from aqueous solutions are hard nonmelting solids.
- the former type of salt may be utilized for imparting some desirable properties to hydrocarbon oils, it is preferred to use a salt prepared by precipitation from aqueous solutions where the ability to inhibit piston ring sticking in lubricating oils is desired.
- the base oil used for testing the addition agent was in all cases an acid refined Western oil 8. A. E. grade.
- the wear tests were carried out in a Weeks machine comprising a inch steel ball pressed against a 1% inch steel cylinder with a force of 40 lbs., the cylinder dipping in the oil to be tested and rotating at 600 R. P. M.
- the duration of the test was sixteen hours and the wear rate determined by measuring the amount of metal removed from the ball.
- the lubricant was maintained at approximately 300 F. as indicated.
- the corrosion tests were carried out in the following manner: Glass tubes 2 inches in diameter and inches long were immersed in an oil bath, the temperature of which was automatically controlled to within :1 F. of the test temperature which was 300 F. Approximately 300 cc. of oil under the test was placed in each tube and air was bubbled through it at the rate of 10 liters per hour. Strips of the different types of bearing metals were cut to size and placed in the oils; in most cases the copper-lead mixture and cadmium-silver bearing alloys were tested simultaneously in the same sample of oil. The weight loss of each strip was recorded. Before weighing, each strip was washed in petroleum ether and carefully wiped with a soft cotton cloth. The duration of the test was 72 hours.
- the compounding agents herein disclosed may have one or more advantages, depending upon the mrticular compound selected, the proportion utilized, and the environment which the lubrieating oil is to encounter. It should beIobserved, for example, that even though a compounded'oil may be somewhat corrosive to copper-lead or cadmium-silver bearing metals, Babbitt bearings are little if at all affected by such corrosive action. Hence, compounded oils which may not be particularly desirable for lubrication oi copper-lead or cadmium-silver bearings may be highly useful and extremely advantageous in conjunction with the operation of internal combustion engines having bearings of babbitt or other corrosive-resistant bearing metals.
- the present invention in its broader aspects is therefore not limited to the use of a particular compound having all or the greatest number of advantages, but embraces various of the less advantageous addition agents which will find utility in particular applications where all the possible improvement in properties may not be required or where the standard of performance may not be so high.
- polyvalent metal salts of substituted oxyacids of pentavalent phosphorus containing more than twelve carbon atoms in the molecule and preferably containing an alkyl or alkaryl substituent should be utilized. It is to be understood that by polyvalent metal salts" used in the above connection the alkaline earth metals are included.
- a moderately acid refined Western naphthenic base oil is the preferred oil stock used as a base for the compounded lubricants involved herein.
- the compounding ingredients appear to function more efficiently in such a base oil than in a highly parafiinic oil stock or a highly refined Western oil.
- the invention is not limited to any particular base stock since advantages herein disclosed may be obtained at least to some degree with various oil stocks, the selection of which will be determined by conditions and service which the compounded lubricant is to encounter.
- the proportion of metal salts of substituted oxyacids of phosphorus added to mineral lubricating oils may vary widely depending upon the uses involved and the properties desired. As little as 0.05% by weight of the compound gives measurable improvements, particularly as respects the color of the compounded oil after use in internal combustion engines. From approximately 0.25 to approximately 2% of the compound may be added to lubricants where ability to inhibit piston ring sticking comprises the principal property desired. Solutions containing more than 2% of the compounds in mineral oil may be utilized for the purpose of preparing lubricating greases and concentrates capable of dilution with lubricating oils and the like. Such higher concentrations comprise a convenient method of handling the compounds and may be used as addition agents for lubricants in general as well as for other purposes. 4
- the metal salts of this invention may be added to hydrocarbon oils containing other compounding ingredients such as pour point depressors, oiliness agents, extreme pressure addition agents, blooming agents, compounds for enhancing the viscosity index of the hydrocarbon oil, corrosion inhibitors, color stabilizers, etc.
- the invention in its broader aspects embraces mineral hydrocarbon oils containing, in addition to metal salts of the substituted acids of phosphorus, thickening agents and/or metal soaps in grease-forming proportions or in amounts insuflicient to form greases, as in the case of mineral castor machine oils or other compounded liquid lubricants.
- a lubricating composition containing a tin salt of an acid of phosphorus having an organic substituent 1.
- a lubricant comprising a hydrocarbon oil and from approximately 0.05% to 2% by weight based on the oil of a tin salt of an acid of phosphorus having an organic substituent.
- a liquid lubricating composition comprising a hydrocarbon oil subject to deterioration at elevated temperatures, and a small amount suflicient to inhibit said deterioration of a tin salt of an acid of phosphorus having an organic substituent.
Description
research and investigation in recent years.
A Patented June 15, 1943 2,321,804 COMPOUNDED MINERAL OIL Bruce B. Farrington, James 0. Clayton, and John T. Rutherford, Berkeley, Calif., assignors to Standard Oil Company of California, San Francisco, Califi, a corporation of Delaware No Drawing. Original application November 21,
1938, Serial No. 241,648. Divided and this applicatlon January 13, 1941, Serial No. 374,241 a 3 Claims.
This invention relates to a new and useful composition of matter and involves a composition comprising a viscous hydrocarbon oil and polyvalent metal salt of certain substituted acids of phosphorus.
This application is a division of our parent application Serial No. 241,648, filed November 21, 1938, and issued as Patent No. 2,228,659 on January 14, 1941.
The production of improved hydrocarbon oils and particularly of lubricating oils having desired characteristics has been the subject of extensive Generally speaking, the compounding of hydrocarbon oils to obtain desired characteristics involves empirical phenomena and the action of untested types of compounding agents cannot be predicted.
A characteristic which has been the subject of extensive investigation is the tendency of hydrocarbon oils to deteriorate or partially decompose and oxidize when subjected to high temperatures. This deterioration is evidenced by the deposition of adhesive deposits on hot metal surfaces'over which the hyrocarbon oil may flow. It is important that resistance to such deterioration be imparted to hydrocarbon oils, particularly to inbricating oils, in order that such compositions may be relatively free from the tendency to form such deposits even under high temperatures and severe operating conditions. A direct result of this type of deterioration during lubrication of internal combustion engines, such as engines of the Diesel type, is the tendency of the oil to cause or permit the sticking of piston rings.
The crankcase lubricant in internal combustion engines is subjected to extremely severe operating conditions and in engines of the Diesel type the lubricant encounters in the piston ring zone temperatures of from approximately 425 to 650 F. and pressures from the oxidizing combustion gases as high as 750 to 1150 lbs. per sq. in. Addition agents which render hydrocarbon oils resistant to deterioration by heat at high temperature levels in the order of those above mentioned usually impart to the oil the ability to inhibit piston ring sticking in internal combustion engines and permit longer periods of operation of such engines without the necessity of major overhauls heretofore occasioned by stuck piston rings.
It should be noted that stabilizing agents which are effective at low temperatures to impart increased stability to hydrocarbon oils, or which are effective at temperatures even as high as 200 or 250 F., are often ineffective under the more severe operating conditions and higher temperature levels to which lubricating oils are subjected in Diesel engines. Thus the operativeness of a stabilizer at atmospheric temperatures, or even temperatures as high as 200 to 300 F., gives no adequate basis for predicting the action of the same stabilizing agent at materially higher temperatures and under more severe operating conditions. The disclosures in the prior art relative to such stabilizers therefore cannot serve as a guide for one seeking stabilizing agents or oxidation inhibitors effective at higher temperature levels. The phenomena involved are catalytic in nature, are highly empirical and require extensive experimentation to determine the action of a given type of addition agent.
The present invention involves the discovery that dispersion of polyvalent metal salts of substituted oxyacids of phosphorus in hydrocarbon oils such as mineral lubricating oil imparts new, unpredictable and highly desirable properties-to the composition. These new properties render the compounded oil particularly useful for various purposes. Although increased resistance to deterioration at high temperature levels comprises one of the principal advantages of the compounded oils of this invention, it is to be understood that the invention is not limited to this feature, that difierent compounds of the general type herein involved vary in their degree of effectiveness and may impart one .or more other desirable properties to the lubricating composition; For example, certain of the compounds reduce the amount of wear produced as compared with a straight uncompounded mineral oil. The same or other compounds inhibit the corrosion of copper-lead or cadmium-silver bearin metals, etc. In general, however, it has been discovered that the new compositions herein disclosed are more stable to heat than is a hydrocarbon oil with which the compositions are compounded. The new compositions of this invention are therefore useful where resistance to deterioration by heat is important. An example of such utility, other than as a lubricating oil, comprises use as a heat transfer fluid where it may be desirable to inhibit or prevent the formation of a deposit on the metal surfaces from or to which heat is being conveyed. Likewise, the increased resistance to oxidation imparted to the oil by the compounds of this invention will find various applications as, for instance, in an insulating, switch, or transformer oil.
It has also been discovered that certain metal salts of substituted oxyphosphoric acids have a combination of properties heretofore unknown and particularly desirable in compounded mineral oil, namely, the ability to inhibit oxidation and impart to lubricating oils increased resistance to deterioration by heat, the ability to inhibit piston ring sticking, freedom from the production of increased wear on cylinder walls and piston rings as compared with uncompounded mineral oils, and low corrosivity as respects the chemical action of the compounded oil on bearing metals such as cadmium-silver and copper-lead alloys. Although various compounded mineral oils are known which are capable of inhibiting piston rinfl sticking, the discovery of specific compounding agents capable of imparting theabove combination of properties to hydrocarbon oils represents an unobvious and important contribution.
Metal salts of substituted oxyacids of phos phorus which may be added to hydrocarbon lubricating oils to provide a new composition of matter of the type herein involved comprise the salts of metals selected from Groups II, HI,IV and VI of Mendeleefl's Periodic Table of the Elements.
I Specific examples of such metals are aluminum.
formed from substituted 'oxyacids of pentavalent phosphorus of the following type formulae:
OR o: P R
011 where R and R may be alkyl, aryl, alkaryl, aralkyl or cyclic nonbenzenoid radicals.- Substituted phosphoric acids containing at least twelve carbon atoms are preferred. Examples of preferred type acids are alkyl or alkaryl substituted phosphoric acids having at least twelve carbon atoms in the molecular However, it is to be understood that the broader aspects of the invention include the use of othe types of substituted oxyacids of phosphorus containing more than twelve carbon atoms. Additional examples of substituted oxyacids of phosphorus which may be used in forming the metal salts of the present invention are as follows:
fi\ O OH Phosphonic acid Monester of phosphonic acid the invention. By "substituted or substituted derivatives of acids of phosphorus whenever used herein, it is intended to designate acids containing an organic group of the type previously listed, 1. e., alkyl, aryl, alkaryl, aralkyl, or cyclic nonbenzenoid groups. The organic groups may be either directly attached to the phosphorus atom of the compound or attached thereto through an intervening atom such as oxygen. The term "oxyacids of phosphorus is intended to designate throughout the specification and claims acids of phosphorus in which one oxygen atom may intervene between the hydrogen and phosphorus atoms of the ester.
The preferred acids are substituted orthophosphoric acids and the preferred-salts comprise the aluminum, calcium, barium'and chromium salts of these acids. Examples of such salts are aluminum lauryl phosphate. aluminum cetyl phosphate, aluminum octadecyl phosphate, aluminum spermol" phosphate, aluminum oleyl phosphate. aluminum spermenyl" phosphate, aluminum cetyl phenyl phosphate, aluminum dl-(amylphenyl) phosphate, aluminum naphthenyl Phosphate, calcium lauryl phosphate, calcium cetyl phosphate, calcium octadecyl phosphate, calcium spermol phosphate, calcium oleyl phosphate, calcium spermenyP' phosphate, calcium cetyl phenyl phosphate, calcium di-(amylphenyl) phosphate, calcium naphthenyl phosphate, chromium lauryl phosphate, chromium cetyl phosphate, chromium octadecyl phosphate, chromium spermol phosphate, chromium oleyl phosphate. chromium spermenyP phosphate, chromium cetyl phenyl phosphate, chromium dl-(amylphenyl) phosphate, chromium naphthenyl phosphate, barium lauryl phosphate, barium cetyl phosphate, barium octadecyl phosphate, barium "spermoY phosphate, barium oleyl phosphate, barium spermenyl" phosphate, barium cetyl phenyl phosphate, barium di-(amylphenyl) phosphate, and barium naphthenyl phosphate.
Additional examples of salts within the scope of the invention are: aluminum di-cyclohexanyl phosphate, aluminum di-stearo-glyceryl phosphate, aluminum tetra-chloro-octodecyl phosphate, aluminum di-(fi-chloro, 2-phenyl phenyl) phosphate, aluminum di-(3-methyl, 4-chloro phenyl) phosphate, calcium di-cyclohexanyl phosphate, calcium di-stearo-glyceryl phosphate, calcium tetra-chloro-octadecyl phosphate, calcium di-(6-chloro,2-phenyl phenyl) phosphate, calcium di-(S-methyl, 4-chloro phenyl) phosphate, chromium di-cyclohexanyl phosphate,
chromium di-stearo-glyeeryl phosphate, chromium tetra-chloro-octadecyl phosphate, chromium dl-(G-chloro, 2-phenyl phenyl) phosphate, chromium di-(3-methyl, 4-chloro phenyl) phosphate, magnesium di-cyclohexanyl phosphate. magnesium di-stearo-glyceryl phosphate, magnesium tetra-chloro-octadecyl phosphate, magnesium di-(S-chloro, 2-phenyl phenyl) phosphate, magnesium di-(3-methyl, 4-chloro phenyl) phosphate, magnesium lauryl phosphate, magnesium cetyl phosphate, magnesium octadecyl phosphate, magnesium spermol phosphate, magnesium oleyl phosphate, magnesium spermenyl" phosphate, magnesium cetyl phenyl phosphate, magnesium di-(amylphenyl) phosphate, magnesium naphthenyl phosphate, barium dl-cyclohexanyl phosphate, barium di-stearo-glyceryl phosphate. barium-tetra-chloro-octadecyl phosphate, barium di-(6-chloro, 2-pheny1 phenyl) phosphate, and barium di-(3-methyl, 4-chloro phenyl) phosphate.
The substituted oxyacids of phosphorus utilized in the present invention may be prepared by methods known in the art. For example, a mixture of a higher alcohol and phosphorus pent/oxide in ethyl ether may be refluxed for several hours. The reaction by which the substituted phosphoric acid is formed in this operation is gelieved to be represented by the following equa- TABL'I: 1
Acid
Method of preparation Mono cetylphosphorlc.
Mono "spermol" 9.25 lb. cetyl alcohol and 5.61 lb. P105 were refluxed with 5 gal. ethyl ether for 24 hr. Cetyl-phosphoric acid solution decanted.
112 gins. solid sperm alcohols, gins. P 0
phosphoric. and 400 gins. ethyl ether treated as above. Mono cctadecyl- 100 gins. octadccanol and 150 cc. benzene phosphoric. treated with 56.8 gins. F001;. Product Di (0 chloro 2 phenyl phenyl) phosphoric.
Mono oleylphos- Mphoi'ic.
ono "sperrnenyl" hosphoric.
' D cycloheiiaiiylphosdihoric.
( etylphenyl) phosphoric.
Di (amylphenol) was hydrolyzed to give a free acidic hydrogen. 100 gins. of the phenol and 50 gins. P
heated to 180 for 18 hr.
107 gms. oleyl alcohol and 28.5 gins. P30 were refluxed in ethyl ether for 24 hours.
107 gms. liquid sperm alcohols and 27'gms. P Oi refluxed in ethyl ether for 24 hours.
150 gins. cyclohexanol and 87 gins. P 05 refluxed with 150 gms. ethyl ether [or 24 hr.
688 gins. cetyl phenol and hi6 gins. P10;
refluxed with ethyl ether for 24 hr.
100 gins. amyl phenol and 43 gins. P10
Mphosphoric. heated to 185 F. for hr.
ono (tetrachioro) 190 gnis. tetrachloro-octadecauol and 28 gms. 0% t a decylphos- P refluxed with ethyl ether for 17 hr.
p cm.
in preparing the metal salts herein involved, the ethyl group in the ethyl phosphoric acid above mentioned may be hydrolyzed off to form the metal salt of the mono-alkyl-ortho-phosphoric acid, 1. e. the salt of RH2PO4. This type of operation is not limited to the alkyl derivatives but includes aryl-ethyl-phosphoric acid, alkarylethyl-phosphoric acid, aralkyl-ethyl-phosphoric acid and ethyl phosphoric acids containing a cyclic nonhenzenoid group.
pared by reacting the acid with odium hydroxide or potassium hydroxide and then precipitating the desired metal salt from the solution of the sodium or potassium salt by the addition of the appropriate metal ion. The salt may also be prepared by the direct neutralization of the acid as, for example, with lime where the calcium salt is to be obtained.
Basic aluminum salts prepared by the precipitation method are preferred by reason of their low corrosivity to alloy bearing metals although the so-called normal salts are not precluded. It is also preferred to maintain the amount of coprecipitated alkali metal salt in the heavy metal compounds at a minimum because the alkali metal salts decrease the stability 01' the oil solution in the presence of water.
The calcium salts may also be prepared in the nonaqueous environment by the reaction of calcium carbide with the tree substituted acids of phosphorus.
.Thealuminum salts may also be prepared in an environment substantially free of water by the reaction of aluminum chloride with the free substituted acids of phosphorus. However, such aluminum salts have properties different from the salts prepared by precipitation from aqueous solutions. The salts prepared in a nonaqueous environment are soft, low melting solids, while the corresponding salts prepared by precipitation from aqueous solutions are hard nonmelting solids. Although the former type of salt may be utilized for imparting some desirable properties to hydrocarbon oils, it is preferred to use a salt prepared by precipitation from aqueous solutions where the ability to inhibit piston ring sticking in lubricating oils is desired.
By Way of illustration and to demonstrate the unique properties possessed by the compounded The metal salts of the various substituted oxyoils of this invention, data from extensive tests acids of phosphorus may be conveniently preare given in Table 2.
TABLE 2 Miscellaneous tests Engine tests, Lauson Strip corrosion Preparation of compound Weeks Percent Compound or salt Ring liisciixila- (giggle Salt stick- Cleanliness Cu-lb Cd-Ag y 3 0 Acid prepared ing s from Acid treated western oil 0 1.0 Poor l. 0 1.0 477 l. 0 Aluminum lauryl phosphate 1.0 5.0 Good- 0.1 1.5 546 cornmeigiallaurylphospho- Na salt ric aci Do 0.05 0.1 0 Do. Aluminum cetyl phosphata. 1.6 5.0 Do
Do. 0. l 4. 0 0. 7 Do.
Do 0.8 0.7 .dO- Ksalt Aluminum octadecyl phos- 0.15 5.0 1.0 OrgagwylaloohM-FPOCh-i- Na salt e. 6. Al iiminum sperm0l" phos- 1.0 5.0 4.0 Solid sperm Blwh0iS+Pg05 Do.
phate. +ether.
Do 0.7 5.0 1.0 do Do. Aluminum oleyl phosphate 0.7 4.0 1.0 Oleyl alcohol +Pz0i+ether Do. Aluminum spermenyl" 0. 3 2.0 0. 2 Liquid sperm alcohol+PqO Do.
hosphate. +e or.
A umih nim di-cyclohexanyl 0.1 5.0 Very good.- Cyclohexan0l+PaO +etheL Do.
p ate.
liiulilgu ililm di-(amyl-phenyl) 1.0 3.0 Fair 0.5 2.0 131 Amylphenol+h0 Do.
as ate.
Aiiimiiium di-stearoglyceryl 0.7 2.0 do Glyceryldistearate+Pg0 Do.
hosphate. ether.
Al uminum tetra chloro-octa- 0.1 Tetra-chloro-octadecanol+ Do.
decyl phosphate. P Os+et er.
Calcium laurylphosphate. 1.0 2.0 do 1.0 5.0 451 coililimei-ciaild lauryl phos Do.
p one so Calcium cetyl phosphate 0.5 63: Excellent..-" 156 Cetyl alcohol+P10i+ether Ksalt.
Do 0.9 4* Very good-.-. 0.5 1.0 162 0.38 do Do. Chromium cetyl phosphata. do 0.3 0.2 d
o o Magnesiumlauryl phosphate- 1.0 Commercial lauryl phosphoric acid. Aluminum lauryl phosphite. 0.3 .1.0 -..do 0.1 0.5 284 Lauryl alcohol; P01; Do.
1 Expressed as ratio of time to stick rings of compounded oil to that with an uncompounded Western acid refined oil S. A. E. 30. B Expressed as ratio of compounded oil corrosion to corrosion with Western acid refined oil S. A. 30.
ii Expressed as ratio of wear of compounded oil to that oi Western acid refined oil 8. A. E. 30.
The base oil used for testing the addition agent was in all cases an acid refined Western oil 8. A. E. grade.
The above data show that small amounts-oi most of the addition agents act as corrosion inhibitors even in acid treated Western oils which are ordinarily considered noncorrosive. Likewise, extremely low wear rates were obtained with the two compounded oils tested in the Weeks'machine. All of the addition agents improved piston cleanliness and imparted resistance to piston ring sticking in engine tests.
In the above piston ring sticking tests a single cylinder 2% inch bore, 2 inch stroke Lauson gasoline engine was operated under extremely severe conditions for the purpose of developing fully piston ring sticking and piston gumming tendencies under circumstances simulating severe operating conditions encountered in thefield. Operation of the motor during tests was continuous at 1600 R. P. M. except for shutdowns at fifteen hour intervals for inspection. The jacket temperature was maintained at 375 F. and the sump oil temperature at 220 F.
The wear tests were carried out in a Weeks machine comprising a inch steel ball pressed against a 1% inch steel cylinder with a force of 40 lbs., the cylinder dipping in the oil to be tested and rotating at 600 R. P. M. The duration of the test was sixteen hours and the wear rate determined by measuring the amount of metal removed from the ball. In the above wear tests the lubricant was maintained at approximately 300 F. as indicated.
The corrosion tests were carried out in the following manner: Glass tubes 2 inches in diameter and inches long were immersed in an oil bath, the temperature of which was automatically controlled to within :1 F. of the test temperature which was 300 F. Approximately 300 cc. of oil under the test was placed in each tube and air was bubbled through it at the rate of 10 liters per hour. Strips of the different types of bearing metals were cut to size and placed in the oils; in most cases the copper-lead mixture and cadmium-silver bearing alloys were tested simultaneously in the same sample of oil. The weight loss of each strip was recorded. Before weighing, each strip was washed in petroleum ether and carefully wiped with a soft cotton cloth. The duration of the test was 72 hours.
To further illustrate the corrosion inhibiting properties of the compounding agents herein disclosed, the following data obtained in the above type strip corrosion test are given:
The compounding agents herein disclosed may have one or more advantages, depending upon the mrticular compound selected, the proportion utilized, and the environment which the lubrieating oil is to encounter. It should beIobserved, for example, that even though a compounded'oil may be somewhat corrosive to copper-lead or cadmium-silver bearing metals, Babbitt bearings are little if at all affected by such corrosive action. Hence, compounded oils which may not be particularly desirable for lubrication oi copper-lead or cadmium-silver bearings may be highly useful and extremely advantageous in conjunction with the operation of internal combustion engines having bearings of babbitt or other corrosive-resistant bearing metals. The present invention in its broader aspects is therefore not limited to the use of a particular compound having all or the greatest number of advantages, but embraces various of the less advantageous addition agents which will find utility in particular applications where all the possible improvement in properties may not be required or where the standard of performance may not be so high.
Present experience indicates that where the properties desired involve the ability to stabilize lubricating oils under severe operating conditions, such as those encountered in the lubrication of pistons and piston rings of internal combustion engines of the Diesel type, polyvalent metal salts of substituted oxyacids of pentavalent phosphorus containing more than twelve carbon atoms in the molecule and preferably containing an alkyl or alkaryl substituent should be utilized. It is to be understood that by polyvalent metal salts" used in the above connection the alkaline earth metals are included.
A moderately acid refined Western naphthenic base oil is the preferred oil stock used as a base for the compounded lubricants involved herein. The compounding ingredients appear to function more efficiently in such a base oil than in a highly parafiinic oil stock or a highly refined Western oil. However, it is to be understood that the invention is not limited to any particular base stock since advantages herein disclosed may be obtained at least to some degree with various oil stocks, the selection of which will be determined by conditions and service which the compounded lubricant is to encounter.
The proportion of metal salts of substituted oxyacids of phosphorus added to mineral lubricating oils may vary widely depending upon the uses involved and the properties desired. As little as 0.05% by weight of the compound gives measurable improvements, particularly as respects the color of the compounded oil after use in internal combustion engines. From approximately 0.25 to approximately 2% of the compound may be added to lubricants where ability to inhibit piston ring sticking comprises the principal property desired. Solutions containing more than 2% of the compounds in mineral oil may be utilized for the purpose of preparing lubricating greases and concentrates capable of dilution with lubricating oils and the like. Such higher concentrations comprise a convenient method of handling the compounds and may be used as addition agents for lubricants in general as well as for other purposes. 4
The metal salts of this invention may be added to hydrocarbon oils containing other compounding ingredients such as pour point depressors, oiliness agents, extreme pressure addition agents, blooming agents, compounds for enhancing the viscosity index of the hydrocarbon oil, corrosion inhibitors, color stabilizers, etc. The invention in its broader aspects embraces mineral hydrocarbon oils containing, in addition to metal salts of the substituted acids of phosphorus, thickening agents and/or metal soaps in grease-forming proportions or in amounts insuflicient to form greases, as in the case of mineral castor machine oils or other compounded liquid lubricants.
While the character of the invention has been described in detail and numerous examples of the composition given, this has been done by way of illustration only and with the intention that no limitation should be imposed on the invention thereby. It will be apparent to those skilled in the art that numerous modifications and variations of the illustrative examples may be efl'ected in the practice of the invention which is of the scope of the claims appended hereto.
We claim:
1. A lubricating composition containing a tin salt of an acid of phosphorus having an organic substituent.
2. A lubricant comprising a hydrocarbon oil and from approximately 0.05% to 2% by weight based on the oil of a tin salt of an acid of phosphorus having an organic substituent.
3. A liquid lubricating composition comprising a hydrocarbon oil subject to deterioration at elevated temperatures, and a small amount suflicient to inhibit said deterioration of a tin salt of an acid of phosphorus having an organic substituent.
BRUCE B. FARRINGTON.
JAMES 0. CLAYTON. JOHN T. RUTHERFORD.
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL54880D NL54880C (en) | 1938-10-04 | ||
BE436573D BE436573A (en) | 1938-10-04 | ||
US242292A US2228671A (en) | 1938-10-04 | 1938-11-25 | Compounded mineral oil |
CH221931D CH221931A (en) | 1938-10-04 | 1939-09-30 | Heat-resistant hydrocarbon oil. |
FR860580D FR860580A (en) | 1938-10-04 | 1939-10-02 | Mineral oil product |
GB27128/39A GB537816A (en) | 1938-10-04 | 1939-10-03 | Hydrocarbon lubricating oil compositions |
GB30164/39A GB539293A (en) | 1938-10-04 | 1939-11-15 | Compounded mineral oil |
GB30163/39A GB538474A (en) | 1938-10-04 | 1939-11-15 | Compounded mineral oil |
NL95973A NL60510C (en) | 1938-10-04 | 1939-11-21 | |
CH222547D CH222547A (en) | 1938-10-04 | 1939-11-23 | Heat-resistant hydrocarbon oil. |
US374078A US2416985A (en) | 1938-10-04 | 1941-01-11 | Compounded mineral oil |
US374241A US2321804A (en) | 1938-10-04 | 1941-01-13 | Compounded mineral oil |
US471276A US2382043A (en) | 1938-10-04 | 1943-01-04 | Compounded mineral oil |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US221931XA | 1938-10-04 | 1938-10-04 | |
US241648A US2228659A (en) | 1938-11-21 | 1938-11-21 | Compounded mineral oil |
US374078A US2416985A (en) | 1938-10-04 | 1941-01-11 | Compounded mineral oil |
US374241A US2321804A (en) | 1938-10-04 | 1941-01-13 | Compounded mineral oil |
US471276A US2382043A (en) | 1938-10-04 | 1943-01-04 | Compounded mineral oil |
Publications (1)
Publication Number | Publication Date |
---|---|
US2321804A true US2321804A (en) | 1943-06-15 |
Family
ID=32180745
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US374078A Expired - Lifetime US2416985A (en) | 1938-10-04 | 1941-01-11 | Compounded mineral oil |
US374241A Expired - Lifetime US2321804A (en) | 1938-10-04 | 1941-01-13 | Compounded mineral oil |
US471276A Expired - Lifetime US2382043A (en) | 1938-10-04 | 1943-01-04 | Compounded mineral oil |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US374078A Expired - Lifetime US2416985A (en) | 1938-10-04 | 1941-01-11 | Compounded mineral oil |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US471276A Expired - Lifetime US2382043A (en) | 1938-10-04 | 1943-01-04 | Compounded mineral oil |
Country Status (6)
Country | Link |
---|---|
US (3) | US2416985A (en) |
BE (1) | BE436573A (en) |
CH (2) | CH221931A (en) |
FR (1) | FR860580A (en) |
GB (3) | GB537816A (en) |
NL (2) | NL60510C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2885417A (en) * | 1955-11-10 | 1959-05-05 | Bohme Fettchemie Gmbh | Organic complex salts of polyvalent metals and methods of producing the same |
WO2000037591A1 (en) * | 1998-12-23 | 2000-06-29 | Rhodia Inc. | Phosphate ester compositions in a weight ratio greater than 1:1 monoalkyl to dialkyl phosphate used as lubricant additives |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733184A (en) * | 1956-01-31 | Inject able penicillin repository prep ar a- | ||
US2630442A (en) * | 1949-05-21 | 1953-03-03 | Metal & Thermit Corp | Organotin phosphate esters |
US2982727A (en) * | 1957-12-31 | 1961-05-02 | Exxon Research Engineering Co | Lubricants containing salts and esters of oxygen-containing acids of phosphorus |
AT229465B (en) * | 1960-06-15 | Shell Int Research | Organic liquids with a lubricating effect and processes for their production | |
NL273836A (en) * | 1961-01-23 | |||
US3213020A (en) * | 1963-03-11 | 1965-10-19 | Lubrizol Corp | Lubricants containing metal phosphinothioate-epoxide reaction products |
US3491133A (en) * | 1964-03-06 | 1970-01-20 | Cities Service Res & Dev Co | Metal organo phosphates and amine salts thereof |
US3494949A (en) * | 1967-01-03 | 1970-02-10 | Dow Chemical Co | Aluminum salts of alkyl orthophosphates |
US3488368A (en) * | 1967-01-30 | 1970-01-06 | Geigy Chem Corp | Metal derivatives of alkylhydroxyphenylalkylphosphinic acids |
US3481717A (en) * | 1968-10-22 | 1969-12-02 | Sinclair Research Inc | Gasoline composition |
JPS5926632B2 (en) * | 1976-12-18 | 1984-06-29 | 堺化学工業株式会社 | Method for producing organophosphorus compounds |
US4321424A (en) * | 1978-03-31 | 1982-03-23 | Rte Corporation | Hydrocarbon electrical insulation oil containing tri-cresyl phosphate to increase water retention capability |
US4200540A (en) * | 1978-04-20 | 1980-04-29 | Halliburton Company | Method for fracturing subterranean formations |
US4487922A (en) * | 1979-07-24 | 1984-12-11 | Occidental Research Corp. | Layered organophosphorous inorganic polymers containing cyclic groups |
JPH0329799B2 (en) * | 1978-09-26 | 1991-04-25 | ||
US4298723A (en) | 1978-09-26 | 1981-11-03 | Occidental Research Corporation | Layered or amorphous acyclic organometallic inorganic polymers |
US4210542A (en) * | 1978-12-01 | 1980-07-01 | Gulf Research And Development Company | Multicomponent stabilized hydraulic fluid |
US4429111A (en) | 1979-07-24 | 1984-01-31 | Occidental Research Corporation | Layered organophosphorus inorganic polymers containing mixed functional groups |
US4390690A (en) | 1979-07-24 | 1983-06-28 | Occidental Research Corp. | Layered organophosphorous inorganic polymers containing oxygen bonded to carbon |
US4299943A (en) | 1980-03-25 | 1981-11-10 | Occidental Research Corporation | Nonaqueous preparation of layered or amorphous organometallic inorganic polymers |
US5059335A (en) * | 1989-02-08 | 1991-10-22 | The Lubrizol Corporation | Lubricants containing salts of hydroxyalkane phosphonic acids |
-
0
- NL NL54880D patent/NL54880C/xx active
- BE BE436573D patent/BE436573A/xx unknown
-
1939
- 1939-09-30 CH CH221931D patent/CH221931A/en unknown
- 1939-10-02 FR FR860580D patent/FR860580A/en not_active Expired
- 1939-10-03 GB GB27128/39A patent/GB537816A/en not_active Expired
- 1939-11-15 GB GB30164/39A patent/GB539293A/en not_active Expired
- 1939-11-15 GB GB30163/39A patent/GB538474A/en not_active Expired
- 1939-11-21 NL NL95973A patent/NL60510C/xx active
- 1939-11-23 CH CH222547D patent/CH222547A/en unknown
-
1941
- 1941-01-11 US US374078A patent/US2416985A/en not_active Expired - Lifetime
- 1941-01-13 US US374241A patent/US2321804A/en not_active Expired - Lifetime
-
1943
- 1943-01-04 US US471276A patent/US2382043A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2885417A (en) * | 1955-11-10 | 1959-05-05 | Bohme Fettchemie Gmbh | Organic complex salts of polyvalent metals and methods of producing the same |
WO2000037591A1 (en) * | 1998-12-23 | 2000-06-29 | Rhodia Inc. | Phosphate ester compositions in a weight ratio greater than 1:1 monoalkyl to dialkyl phosphate used as lubricant additives |
AU772578B2 (en) * | 1998-12-23 | 2004-04-29 | Rhodia Inc. | Phosphate ester compositions in a weight ratio greater than 1:1 monoalkyl to dialkyl phosphate used as lubricant additives |
Also Published As
Publication number | Publication date |
---|---|
GB537816A (en) | 1941-07-08 |
GB538474A (en) | 1941-08-06 |
US2382043A (en) | 1945-08-14 |
CH221931A (en) | 1942-06-30 |
FR860580A (en) | 1941-01-18 |
NL60510C (en) | 1947-12-16 |
GB539293A (en) | 1941-09-04 |
BE436573A (en) | |
US2416985A (en) | 1947-03-04 |
NL54880C (en) | |
CH222547A (en) | 1942-07-31 |
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