US2479407A - Hydroxyaromatic phosphorus aminephosphorus sulfide reaction products - Google Patents
Hydroxyaromatic phosphorus aminephosphorus sulfide reaction products Download PDFInfo
- Publication number
- US2479407A US2479407A US676582A US67658246A US2479407A US 2479407 A US2479407 A US 2479407A US 676582 A US676582 A US 676582A US 67658246 A US67658246 A US 67658246A US 2479407 A US2479407 A US 2479407A
- Authority
- US
- United States
- Prior art keywords
- phosphorus
- product
- oil
- reaction
- reaction products
- 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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- 229910052698 phosphorus Inorganic materials 0.000 title description 54
- 239000011574 phosphorus Substances 0.000 title description 54
- 239000007795 chemical reaction product Substances 0.000 title description 43
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title description 40
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title 1
- 239000000047 product Substances 0.000 description 47
- 239000003921 oil Substances 0.000 description 39
- -1 phosphorus amine Chemical class 0.000 description 33
- 150000001875 compounds Chemical class 0.000 description 32
- 239000000203 mixture Substances 0.000 description 30
- 239000002480 mineral oil Substances 0.000 description 25
- 235000010446 mineral oil Nutrition 0.000 description 23
- 238000006243 chemical reaction Methods 0.000 description 19
- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 14
- 239000001993 wax Substances 0.000 description 13
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 230000002378 acidificating effect Effects 0.000 description 10
- VKCLPVFDVVKEKU-UHFFFAOYSA-N S=[P] Chemical compound S=[P] VKCLPVFDVVKEKU-UHFFFAOYSA-N 0.000 description 9
- 125000003118 aryl group Chemical group 0.000 description 9
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- 150000002739 metals Chemical class 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
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- 239000010936 titanium Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical group [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
- C07F9/6581—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms
- C07F9/65811—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms having four or more phosphorus atoms as ring hetero atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/22—Amides of acids of phosphorus
- C07F9/24—Esteramides
- C07F9/2454—Esteramides the amide moiety containing a substituent or a structure which is considered as characteristic
- C07F9/2479—Compounds containing the structure P(=X)n-N-acyl, P(=X)n-N-heteroatom, P(=X)n-N-CN (X = O, S, Se; n = 0, 1)
- C07F9/2495—Compounds containing the structure P(=X)n-N-acyl, P(=X)n-N-heteroatom, P(=X)n-N-CN (X = O, S, Se; n = 0, 1) containing the structure P(=X)n-N-P (X = O, S, Se; n = 0, 1)
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/26—Organic compounds containing phosphorus
- C10L1/2691—Compounds of uncertain formula; reaction of organic compounds (hydrocarbons acids, esters) with Px Sy, Px Sy Halz or sulfur and phosphorus 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
- 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
- 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
-
- 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
- C10M2223/049—Phosphite
-
- 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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
-
- 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
- This invention has to do with mineral 011 compositions and is more particularly related to compositions comprised of mineral oil and a characterizing agent which will improve the oil in one or more respects.
- mineral oil fractions refined for various uses are in and of themselves usually deficient in one or more respects, such that their practical utility is limited even in the particular field for which they have been refined.
- mineral oil fractions refined for use as lubricants have a tendency to oxidize under conditions of use with Y the formation of sludge or acidic oxidation products; also the lighter fractions such as gasoline and kerosene tend to oxidize with the formation of color bodies, gum, etc.
- lighter mineral oil fractions such as those used for fuel purposes, particularly in internal combustion engines, it has been found that the combustion characteristics of the fuel may be controlled and improved by adding minor proportions of various improving agents thereto.
- the present invention is predicated upon the discovery of a class or group of oil-soluble reaction products or compounds which, when added to mineral oil fractions in minor proportions, will improve the oil fractions in several respects.
- These multi-functional reaction products or compounds are acidic, contain phosphorus, sulfur and nitrogen, and are formed by the reaction of a phosphorus sulfide and a phosphorus amine of an alkyl-substituted hydroxyaromatic compound.
- contemplated also as coming within the class of phosphorus-, sulfurand nitrogen-containing reaction products are the metal, ammonium and organic amine derivatives thereof.
- X is a phosphorus amino group selected from the group consisting of:
- X is a phosphorus amine group selected from the group consisting of:
- T is an aromatic nucleus, either monoor poly-cyclic
- R is an oilsolubilizing aliphatic or alkyl hydrocarbon group or groups,'which preferably contains a total of ten or more carbon atoms, and especially preferred of such groups is one having at least twentycarbon atoms,'such as an aliphatic wax It will be understood that when substituentslike --OI-I, -SH and keto groups are present in a phosphorus amine of an alkyl-substituted hydroxyaromatic compound before reaction with a phosphorus sulfide, that they may in some instances also react with the phosphorus sulfide.
- the predominant reaction is that which takes place between the phosphorus sulfide and a phosphorus amino group, (x or X) as defined above.
- the metal, ammonium and organic amine salts of the compounds or reaction products of phosphorus sulfides and phosphorus amines of alkyl-substituted hydroxyaromatic compounds are also contemplated herein.
- the ammonium salts are obtained by reacting ammonia gas with the aforesaid reaction products.
- Organic salts such as amine salts are obtained by reacting an amine such as diamylamine and the reaction product together at suitable temperatures, such as 200 F.
- the metals which may be incorporated into our compounds or reaction products comprise the following: alkali metals, lithium, sodium, potassium, rubidium and caesium; the alkaline earth group, beryllium, magnesium, calcium, strontium and barium; the metals zinc, cadmium, mercury, scandium; the metals aluminum, gallium, indium, thallium, titanium, zirconium, cerium, thorium, germanium, tin and lead; vanadium, columbium and tantalum; ar-'- senic, antimony and bismuth; chromium, molyb- 4 denum, tungsten and uranium; ihenium, manganese, iron, cobalt and nickel; ruthenium, rhodium and palladium; osmium, iridium and platinum.
- rare earth metals are given in the foregoing list of metal substituents.
- Other rare earth metals suitable for the metal type materials are those of the cerium and yttrium groups, namely a mixture of praseodymium, neodymium, samarium, europium, gadolinium. terbium, dysprosium, holmium, erbium, thallium and lutecium.
- metals barium, calcium and zinc.
- T represents an aromatic nucleus which may be monoor poly-cyclic.
- Typical nuclei contemplated herein are those of the'compounds benzene, naphthalene, anthracene, phenanthrene, dlphenyl, etc.
- the compounds or reaction products of this invention contain, as aforesaid, at least one oilsolubilizing substituent 'such as an alkyl group.
- Oil solubility is imparted to our compounds or reaction products with an alkyl substituent, such 'substituent or substituents containing at least ten carbon atoms in alkyl groups such, for example, as one decyl group or two amyl groups.
- alkyl substituents preference is given to long-chain high molecular weight aliphatic hydrocarbon groups, because reaction products or' compounds characterized by an aryl group having the latter alkyl substituents are not only oil soluble but possess the added properties of improving the pour point and viscosity index of the oil to which they are added.
- Petroleum wax is a preferred source of the high molecular weight alkyl substituent and, for this reason, the preferred multifunctional reaction products are referred to as wax substituted. It is to be understood, however, that other equivalent long-chain aliphatic compounds such as ester .waxes, high molecular weight alcohols, aliphatic polymers, etc. may be utilized.
- ester .waxes high molecular weight alcohols
- aliphatic polymers etc.
- This degree of alkylor wax-substitution for our oil-soluble or oil-miscible reaction products or compounds, which may or may not contain a metal substituent, may vary over relatively wide limits, depending upon whether the aryl nucleus is monoor poly-cyclic and whether such nucleus carries other substituents such as represented above by Y.
- chlorinated paraffin wax or a chlorinated hydrocarbon of the type which characterizes chlorinated paraffin wax
- the product obtained is referred to as wax substituted.
- A-B the convenient designation
- waxphenol (3-16) indicates that the wax-phenol is obtained by reacting one mol of phenol with a quantity of chlorinated wax of 16% chlorine content containing three atomic proportions of group in the preferred sub-class may be ply-,
- each of the polyvalent wax radicals or groups will be attached to a plurality of the and nuclei.
- the phosphorus amines represented above by general Formulae I and II may be prepared by any one of several methods well known to those familiar with the art. Preferred, however, are those phosphorus amines prepared by reaction of an alkyl-substituted hydroxyaromatic com pound or alkali metal salt thereof with a phosphorus halide such as PCla, PCls, P0013, PS0]: and PNClz, followed by reaction with ammonia.
- a phosphorus amine derived from the preferred phosphorus halide, PCla is represented in Equation A following:
- the compounds or reaction products contemplated herein are all characterized by the presence of substantial amounts of phosphorus, sulfur and nitrogen therein.
- a phosphorus amine Equation A
- an alkyl-substituted hydroxyaromatic compound is reacted with substantially 1 mol of P285 as described hereinafter, it is most probable that the reaction product is predominantly comprised of a phosphorus-, sulfurand nitrogencontaining product shown in Equation B below:
- the molar ratio of reactants can be varied in order to control, to an appreciable degree, the amount of phosphorus, sulfur and nitrogen in our compounds or reaction products. Products obtained, however, with a molar ratio of from 1:1 to 4:1 (phosphorus amine: P285) are preferred. It will also be clear that when the phosphorus amine reactant is other than the preferred reactant shown in Equations A through C above, the reaction products will correspondingly differ in character. It will further be understood that, as indicated hereinabove, certain Y substituents are also capable of reacting with phosphorus sulfides, thereby influencing the character of the final products.
- reaction temperatures and reaction times used in preparing the products of this invention may be varied considerably. The most desirable conditions are those shown in the illustrative examples provided hereinbelow.
- reaction products contemplated herein as mineral oil improving agents the following illustrative examples ⁇ if preferred reaction products are described elow.
- the product in mineral oil, is characterized by the following: phosphorus, 2.0%; sulfur, 2.5%; nitrogen, 0.4%; and neutralization number, 20.0 (titration in ethyl alcohol-water mixture with phenol-phthalein indicator).
- the predominant compound in the product is believed to be:
- the product is referred to-hereinafter as ProductI.
- the salts of other metals, and the, barium salts as well can be formed by using an alcoholate of the desired metal or can be formed by double decomposition of the sodium salt of the phosphorus sulfide reaction productswhich are formed by reaction with sodium butylate-with a chloride of the desired metal. These reactions are preferably carried out with butanol as the solvent in order to obtain suitable mixing of the reactants.
- Zmc SALT or Pnonucr I The zinc salt of Product I is readily formed by double decomposition of zinc chloride in solution in butanol with the sodium salt of Product I, or
- This product was obtained by reaction of 900 grams 01 a 1:2 mineral oil blend of mixed diamylphenols (1.28 111011.90 grams (0.64 mol) of PCla, ammonia gas and 71 grams (0.25 mol) of Past,
- the productProduct V-so obtained is believed to comprised of the following EXAMPLE VI Barnum SALT or Pnouucr V'
- Product V Prior to reaction with barium hydroxide, Product V, was desalted with butanol and water, as described in Example I (a) and (b) and steamed, as described in Example II.
- a quantity (960 grams) of Product V so treated is then reacted with '70 grams of Ba(OH) 2.81120 at 150 C.
- the finished product in approximately a 1:2 mineral oil blend, is-obtained by filtering the reaction product in the presence of Hi Flo, a diatomaceous earth which is substantially 100% silica.
- Hi Flo a diatomaceous earth which is substantially 100% silica.
- Analysis of the 1:2 mineral oil blend showed: barium, 3.0%; sulfur, 5.0%; phosphorus, 4.0%; and nitrogen 0.4%.
- the oil used in these tests was a motor oil of seconds saybolt viscosity at 210 F., and the 75the extent to whichthe slots inthe oil rings oil blends of the same oil containing represen- 11 12 were fllledwlth deposit; (o) the amount of carphorus amine group thereof is linked; to carbon bonaceous deposits in the oil: and (d) the acidity through oxygen. or neutralization number (N. N.) of the oil.
- the amount of improving agent used may be varied dependin upon the character of. the oil' ing agents of the type contemplated herein are generally used in amounts ranging from about per cent to about per cent, although preferred are amounts of the order of l per cent. It will, be understood. however, that larger amounts of the improving agents may be present in oil concentrates, which are also contemplated herein.
- phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, a phosphorus sultide and a phosphorus amine of an alkyl-substituted hydroxyaromatic compound, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen and said alkyl substituent containing at least about ten carbon atoms.
- an acidic, phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, a phosphorus sulflde and a phosphorus amine of a paraflln waxsubstituted hydroxyaromatic compound, said product being characterized in that the phosvated temperature to prevent elimination of phosphorus from said product, a phosphorus sul- -flde and a phosphorus amine of a hydroxyaromatic compound, followed by substituting the acidic, phosphorus-, sulfurand nitrogen-containing phosphorus sulfide-phosphorus amine reaction product thus obtained with metal, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen.
- a metal-, phospnorus-, suli'urand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, a phosphorus sulnde and a phosphorus amine of an ailryl-substituted hydroxyaromatic compound, followed by substituting the acidic, phosphorus-, sulfurand nitrogen-containing phosphorus sulfide-phosphorus amine reaction product thus obtained with metal, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen and said alkyl substituent containing at least about ten carbon atoms.
- a metal-, phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, a phosphorus sulfide and a phosphorus amine of a paraflin-wax substituted hydroxyaromatic compound, followed by substituting the acidic, phosphorus-, sulfurand nitrogen-containing phosphorus sulfidephosphor-us amine reaction product thus obtained with metal, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen.
- an oilsoluble, acidic, phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, phosphorus pentasulflde and a phosphorus amine of an alkyl-substitued hydroxyaromatic compound, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen.
- an oilsoluble, acidic, phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, substantially one mol of phosphorus pentasulilde and two male of a phosphoamino-, paraflin waxsubstituted phenol, said product being characterized in that the phwphems er-1.21; i K is linked to carbon through men,
- mi @ib solubie. barium salt of an acidic, phosphorus-. sulfurand nitrogen-containing xwction praduct obtained, by reacting, at an elevated temperature to prevent elimination of phosphorus from said precinct, phosphorus penmemfide and. a, pheaphorus amine of a, parafin wexaufitituifi phenol, said product being chemeteme in mes the phosphorus amine group thereei is linked w carbon through oxy 10.
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Description
Patented Aug. 16, 1949 TENT orrcs HYDROXYAROMATIC PHOSPHORUS AMINE- PHOSPHORUS SULFIDE REACTION PROD- pors Orland M. Reid and Harry J. Andress, .112, Woodbury, N. J., assignors to Socony Vacuum Oil Company, Incorporated, a corporation of New York No Drawing. Original application June 8, 1945,
Serial No. 598,418. Divided and this application June 13, 1946, Serial N0. 676,582
Claims. 1
This invention has to do with mineral 011 compositions and is more particularly related to compositions comprised of mineral oil and a characterizing agent which will improve the oil in one or more respects.
It is well known to those familiar with the art that mineral oil fractions refined for various uses are in and of themselves usually deficient in one or more respects, such that their practical utility is limited even in the particular field for which they have been refined. For example, mineral oil fractions refined for use as lubricants have a tendency to oxidize under conditions of use with Y the formation of sludge or acidic oxidation products; also the lighter fractions such as gasoline and kerosene tend to oxidize with the formation of color bodies, gum, etc. In order to prevent the formation of these products and thereby extend the useful life of the oil fraction, it is common practice to blend with such oil fractions an additive material which has the eifect of inhibiting oxidation, such a material being known in the trade as an oxidation inhibitor, a sludge inhibitor, a gum inhibitor, etc.
It is also the practice to add other materials to mineral oil fractions for the purpose of improv-- ing oiliness characteristics and the wear-reducing action of such mineral oils when they are used as lubricants, particularly when the oils are used for the purpose of lubricating metal surfaces which are engaged under extremely-high pressures and at high rubbing speeds.
Various other materials have been developed for the purpose of depressing the pour point of mineral oil fractions which have been refined for use as lubricants. Most refining treatments provide oils containing a small amount of wax which, without the added material, tend to crystallize at temperatures which render the oil impracticable for use under low temperature conditions. Additive agents have also been developed for improving the viscosity index of lubricating oil fractions. In the case of internal combustion engines, particularly those operating with high cylinder pressures, there is a decided tendency for the ordinary oil fractions'to form carbonaceous deposits which cause the piston rings to stick in their slots and which fill the slots in the oil ring or rings, thus materially reducing the emciency of the engine. Materials have been de- 2 veioped which, when added to the oil, will reduce this normal tendency of the oil to form deposits.
It has also been discovered that certain types of hard metal alloy bearings. such as cadmiumsilver alloy bearings, are attacked by ingredients in certain types of oils, particularly oils of high viscosity index obtained by various methods of solvent-refining. This corrosive action has led to the development of corrosion inhibitors which may be used in solvent-refined oils to protect such bearing metals.
In the lighter mineral oil fractions, such as those used for fuel purposes, particularly in internal combustion engines, it has been found that the combustion characteristics of the fuel may be controlled and improved by adding minor proportions of various improving agents thereto.
The various characterizing materials which have been developed for use in mineral oil fractions to improve the same in the several respects enumerated above are largely specific to their particular applications. Therefore, it has generally been the practice to add a separate material for each of the improvements to be eflected.
The present invention is predicated upon the discovery of a class or group of oil-soluble reaction products or compounds which, when added to mineral oil fractions in minor proportions, will improve the oil fractions in several respects. These multi-functional reaction products or compounds are acidic, contain phosphorus, sulfur and nitrogen, and are formed by the reaction of a phosphorus sulfide and a phosphorus amine of an alkyl-substituted hydroxyaromatic compound. contemplated also as coming within the class of phosphorus-, sulfurand nitrogen-containing reaction products are the metal, ammonium and organic amine derivatives thereof.
While any of the well known phosphorus sulfides, such as P283, P285, P483 P487, etc., may be used in the preparation of the compounds or reaction products contemplated herein P285 is preferred.
The phosphorus amines of alkyl-substituted hydroxyaromatic compounds from which the reaction products or compounds of this invention are obtained may be represented by general Formulae I and II:
wherein X is a phosphorus amino group selected from the group consisting of:
wherein X is a phosphorus amine group selected from the group consisting of:
of these groups of general Formulae I and 11, groups and P-NH: are preferred; T is an aromatic nucleus, either monoor poly-cyclic; R is an oilsolubilizing aliphatic or alkyl hydrocarbon group or groups,'which preferably contains a total of ten or more carbon atoms, and especially preferred of such groups is one having at least twentycarbon atoms,'such as an aliphatic wax It will be understood that when substituentslike --OI-I, -SH and keto groups are present in a phosphorus amine of an alkyl-substituted hydroxyaromatic compound before reaction with a phosphorus sulfide, that they may in some instances also react with the phosphorus sulfide. In all cases, however, the predominant reaction is that which takes place between the phosphorus sulfide and a phosphorus amino group, (x or X) as defined above. As indicated hereinabove, the metal, ammonium and organic amine salts of the compounds or reaction products of phosphorus sulfides and phosphorus amines of alkyl-substituted hydroxyaromatic compounds are also contemplated herein. The ammonium salts, as will be clear, are obtained by reacting ammonia gas with the aforesaid reaction products. Organic salts such as amine salts are obtained by reacting an amine such as diamylamine and the reaction product together at suitable temperatures, such as 200 F. The metals which may be incorporated into our compounds or reaction products comprise the following: alkali metals, lithium, sodium, potassium, rubidium and caesium; the alkaline earth group, beryllium, magnesium, calcium, strontium and barium; the metals zinc, cadmium, mercury, scandium; the metals aluminum, gallium, indium, thallium, titanium, zirconium, cerium, thorium, germanium, tin and lead; vanadium, columbium and tantalum; ar-'- senic, antimony and bismuth; chromium, molyb- 4 denum, tungsten and uranium; ihenium, manganese, iron, cobalt and nickel; ruthenium, rhodium and palladium; osmium, iridium and platinum.
Some of the rare earth metals are given in the foregoing list of metal substituents. Other rare earth metals suitable for the metal type materials are those of the cerium and yttrium groups, namely a mixture of praseodymium, neodymium, samarium, europium, gadolinium. terbium, dysprosium, holmium, erbium, thallium and lutecium.
Particularly preferred of such metals, however, are the metals barium, calcium and zinc.
As described above in connection with general Formula I, the symbol T represents an aromatic nucleus which may be monoor poly-cyclic. Typical nuclei contemplated herein are those of the'compounds benzene, naphthalene, anthracene, phenanthrene, dlphenyl, etc.
The compounds or reaction products of this invention contain, as aforesaid, at least one oilsolubilizing substituent 'such as an alkyl group. Oil solubility is imparted to our compounds or reaction products with an alkyl substituent, such 'substituent or substituents containing at least ten carbon atoms in alkyl groups such, for example, as one decyl group or two amyl groups. Within this general group of alkyl substituents preference is given to long-chain high molecular weight aliphatic hydrocarbon groups, because reaction products or' compounds characterized by an aryl group having the latter alkyl substituents are not only oil soluble but possess the added properties of improving the pour point and viscosity index of the oil to which they are added. Petroleum wax is a preferred source of the high molecular weight alkyl substituent and, for this reason, the preferred multifunctional reaction products are referred to as wax substituted. It is to be understood, however, that other equivalent long-chain aliphatic compounds such as ester .waxes, high molecular weight alcohols, aliphatic polymers, etc. may be utilized. In
' compounds or reaction products of the preferred sub-class, that is, those containing a wax substituent, the wax group cooperates with the aryl nucleus to which it is attached and cooperates with the other substituents on the aryl nucleus to impart pour depressing and viscosity index improving properties to these agents. These preferred alkyl-substituted compounds or reaction products are capable of remaining uniformly dispersed in mineral oil either as a true solution or as a colloidal suspension under normal conditions of handling and use. There appears to be, however, a critical zone or region in the degree of alkylor wax-substitution below which these compounds or reaction products are not readily soluble in viscous mineral oil fractions. This degree of alkylor wax-substitution for our oil-soluble or oil-miscible reaction products or compounds, which may or may not contain a metal substituent, may vary over relatively wide limits, depending upon whether the aryl nucleus is monoor poly-cyclic and whether such nucleus carries other substituents such as represented above by Y. I
In the event chlorinated paraffin wax (or a chlorinated hydrocarbon of the type which characterizes chlorinated paraffin wax) is used as the alkylating agent for introducing an alkyl group into a hydroxy-substituted aryl nucleus (T-OH) the product obtained is referred to as wax substituted. To further identify these waxsubstituted products. we have adopted the convenient designation (A-B), indicating with (A) the number of atomic proportions of chlorine in the chlorinated wax reacted with one mol of phenol, and indicating with (B) the percentage of chlorine in the chlorinated wax. Thus, waxphenol (3-16) indicates that the wax-phenol is obtained by reacting one mol of phenol with a quantity of chlorinated wax of 16% chlorine content containing three atomic proportions of group in the preferred sub-class may be ply-,
valent in nature, in which event each of the polyvalent wax radicals or groups will be attached to a plurality of the and nuclei.
With regard to the number of other groups which may be attached to the aryl nuclei, this will vary with the extent to which it is desired to effect substitution of the nucleus with the alkyl or wax derivatives for obtaining the desired properties in the product. It is, of course.
'limited to the number of replaceable hydrogen atoms of an aromatic nucleus which are available for substitution. As will be apparent to those skilled in the art, the maximum number of R groups which can be attached to a single aromatic nucleus will vary as the nucleus is monoor poly-cyclic and also as the nucleus is otherwise substituted.
The phosphorus amines represented above by general Formulae I and II may be prepared by any one of several methods well known to those familiar with the art. Preferred, however, are those phosphorus amines prepared by reaction of an alkyl-substituted hydroxyaromatic com pound or alkali metal salt thereof with a phosphorus halide such as PCla, PCls, P0013, PS0]: and PNClz, followed by reaction with ammonia. Byway of illustration, the preparation of a phosphorus amine derived from the preferred phosphorus halide, PCla, is represented in Equation A following:
01 (a) a. on Pct 12.. 01= +HCl In forming the product As aforesaid, the compounds or reaction products contemplated herein are all characterized by the presence of substantial amounts of phosphorus, sulfur and nitrogen therein. For example, when 1 mol of a phosphorus amine (Equation A) of an alkyl-substituted hydroxyaromatic compound is reacted with substantially 1 mol of P285 as described hereinafter, it is most probable that the reaction product is predominantly comprised of a phosphorus-, sulfurand nitrogencontaining product shown in Equation B below:
With a ratio of 2:1 (phosphorus amine: P285), the predominant reaction most probably is that represented in Equation C below:
In the event, however, that the molar ratio is about 4 :1, the predominant reaction product most probably is that shown in Equation D following:
It will be clear from the foregoing that the molar ratio of reactants can be varied in order to control, to an appreciable degree, the amount of phosphorus, sulfur and nitrogen in our compounds or reaction products. Products obtained, however, with a molar ratio of from 1:1 to 4:1 (phosphorus amine: P285) are preferred. It will also be clear that when the phosphorus amine reactant is other than the preferred reactant shown in Equations A through C above, the reaction products will correspondingly differ in character. It will further be understood that, as indicated hereinabove, certain Y substituents are also capable of reacting with phosphorus sulfides, thereby influencing the character of the final products.
The reaction temperatures and reaction times used in preparing the products of this invention may be varied considerably. The most desirable conditions are those shown in the illustrative examples provided hereinbelow.
In order to more fully demonstrate the reaction products contemplated herein as mineral oil improving agents the following illustrative examples {if preferred reaction products are described elow.
Rucrrou Paonucr orPzSs AND Pnosrno-Aimlo Dssrvsrrvs or ALm-Sussmom Pmoi.
((1) Preparation of phospho-amino derivative of allow-substituted phenol Six hundred grams of 1:2 mineral oil blend of wax-phenol (3-14), prepared as described in Rein Patent 2,191,498, is heated to 50 C. and 85 grams of P013 are added slowly thereto with stirring. The temperature is raised to 100 C. and maintained for one hour to insure reaction; whereby the phosphorus dichloride derivative is formed. The phospho-amino derivative is then formed by introducing gaseous ammonia. into the reaction mixture obtained above, ammonia being run into the reaction mixture until a slight excess is indicated by test with wet litmus paper.
In order to facilitate the reaction with Pass and to form. a light-colored product, it is desirable to remove onium chloride formed in the preceding operation. This is accomplished by adding to the reaction mixture 100 cc. of butanol and 10 cc. of water, and stirring the resultant mixture for about one hour. Butanol and water are then removed by heating the latter mixture to about 120 C. During this treatment, ammonium chloride is precipitated and, is removed by filtering the mixture through Hi Flo, a diatornaceous earth which is substantially 100% silica.
The reactions involved in the formation of the slum-substituted, phospho-amino phenol are the folloc:
Baron SALT or Paonocr I 630 grams of Product I and. with rapid stirring,
(b) Preparation of reaction product of P255 and (a) The product obtained in (a) is reacted with 28.4 grams of P285 (/2 mol) for 4 hours at about 175 C., then mixed with Hi F10" and filtered to form the final product. The amount of Pisa used here corresponds to Equation B shown above.
The product, in mineral oil, is characterized by the following: phosphorus, 2.0%; sulfur, 2.5%; nitrogen, 0.4%; and neutralization number, 20.0 (titration in ethyl alcohol-water mixture with phenol-phthalein indicator). The predominant compound in the product is believed to be:
HBH
The product is referred to-hereinafter as ProductI.
heating the resultant mixture to 150 C. The barium salt thus formed is then mixed with Hi Plo. a diatomaceous earth which is substantially silica, and filtered, and then steamed at C. until an amount, equivalent to the volume of the reaction product, of water is collected from the steaming operation. By this means, odoriferous by-products and all traces of butanol are removed. The final product, which is approximately a 1:2 blend in mineral oil, ana-. lyses as follows: barium, 4.0%; phosphorus, 2.0%: sulfur, 2.3%; and nitrogen, 0.4%. This product is referred to hereinafter as Product 11'.
While the use of an hydroxide is the preferred method of forming the barium salt, the salts of other metals, and the, barium salts as well, can be formed by using an alcoholate of the desired metal or can be formed by double decomposition of the sodium salt of the phosphorus sulfide reaction productswhich are formed by reaction with sodium butylate-with a chloride of the desired metal. These reactions are preferably carried out with butanol as the solvent in order to obtain suitable mixing of the reactants.
CALCIUM SALT or Prosper I A quantity (630 grams) of Product I, obtained as described in Example I, is reacted with 28.4 grams of CaClz and a sodium butylate containing 12 grams of sodium. The calcium salt is formed by heating the reaction mixture thus obtained to 150 C., whereupon substantially all of the butanol, released in the reaction, is removed, followed by steaming the butanol-free mixture at 150 C. as described in Example II above. The reaction mixture is then filtered with the aid of Hi Flo," a diatomaceous earth which is substantially 100% silica, in order to obtain the finished product in approximately a 1:2 mineral oil blend. The product-Product III-analyses as follows: calcium, 1.2%; sulfur, 2.2%; phosphorus, 2.0%; and nitrogen, 0.4%.
Zmc SALT or Pnonucr I The zinc salt of Product I is readily formed by double decomposition of zinc chloride in solution in butanol with the sodium salt of Product I, or
by reaction of zinc butylate with Product I. The
phorus, 2.0% and nitrogen, 0.4%. This product is identified as Product IV.
as described in Example I (a) and (b).
be predominantly 9. ExAmPLnv Rmorron Pnonucr OF PzSs AND PnosPno-Amo DERIVATIVE or Dmmrnsuor.
This product was obtained by reaction of 900 grams 01 a 1:2 mineral oil blend of mixed diamylphenols (1.28 111011.90 grams (0.64 mol) of PCla, ammonia gas and 71 grams (0.25 mol) of Past, The productProduct V-so obtained is believed to comprised of the following EXAMPLE VI Barnum SALT or Pnouucr V' Prior to reaction with barium hydroxide, Product V, was desalted with butanol and water, as described in Example I (a) and (b) and steamed, as described in Example II. A quantity (960 grams) of Product V so treated is then reacted with '70 grams of Ba(OH) 2.81120 at 150 C. The finished product, in approximately a 1:2 mineral oil blend, is-obtained by filtering the reaction product in the presence of Hi Flo, a diatomaceous earth which is substantially 100% silica. Analysis of the 1:2 mineral oil blend showed: barium, 3.0%; sulfur, 5.0%; phosphorus, 4.0%; and nitrogen 0.4%.
It will be apparent to those skilled in the art that the compounds or reaction products contemplated herein, and illustrated hereinabove by Products I through VI, can be obtained in the free state rather than in mineral oil blends as above. All that is necessary in this regard is the substitution of a diluent such as kerosene, Stoddards solvent, etc., for the mineral oil diluent used in the foregoing examples, followed by removal of said diluent after the reactions have been completed. It is to be understood, therefore, that such compounds or reaction products are contemplated herein as new compositions of matter. 7
To demonstrate the effectiveness of the compounds or reaction products of the type described above and illustrated by the foregoing examples, in the mineral oil compositions contemplated by this invention, we have conducted several comparative tests, the results of which are listed below, with representative mineral oils alone and with the same oils blended with the preferred reaction products prepared in the foregoing examples. The concentration of additive in the oil is based on the weight per cent of the pure compound contained in the concentrated oil blends.
POUR POINT DEPRESSION are listed below in-Table 1.
10 Table 1 Cone. by Improving Agent W Percent Vrscosrr'r Irmnx Imrnovnrmm The improvement obtained by the mineral oil addition agentscontemplated herein in the viscosity index of a mineral oil to which they are added is clearly shown by the illustrative data in Table 2 below.
i 1 Table 2 C onc. y 008 Y Improving Agent Wt, v. I Percent CORROSION INHIBITION A motor oil and blends of the same containing preferred improving agents of the type contemplated herein were also tested in a singlecylinder Lauson engine which was operated for 36 hours at an oil temperature at 290 F. and a jacket temperature of 212 F. The motor oil used was a solvent-refined oil having a Saybolt viscosity of 45 seconds at 210 F. (a kinematic viscosity of 5.8 centistokes at 210 F.). The oil blends usedwere blends of the said oil and said prepared improving agents. After 36 hours the acidity (as measured by the neutralization numbell, N. N.) and the kinematic viscosity of the oil and of the oil blends were measured. The results are shown in Table 3 below:
Table 3 Cone. by V Kin v Improving Agent pemfit N at 210 F.
OPERATION Trzsr In addition to the foregoing tests, comparative tests have also been made between an oil and tative improving agents of the type contemplated herein to determine the comparative behavior of the unblended oil and of the blended oils under actual operating conditions. The test was carried out in a single cylinder C. F. R. engine operated continuously over a time interval of 28 hours with a cooling medium held at a temperature of about 390 F. and the oil temperature held at about 150, F. The engine was operated 7 at a speed of 1200 R. P. M.
. The oil used in these tests was a motor oil of seconds saybolt viscosity at 210 F., and the 75the extent to whichthe slots inthe oil rings oil blends of the same oil containing represen- 11 12 were fllledwlth deposit; (o) the amount of carphorus amine group thereof is linked; to carbon bonaceous deposits in the oil: and (d) the acidity through oxygen. or neutralization number (N. N.) of the oil. The 4. As a new composition of matter, a metal-. results obtained in this test are set forth in Table phosphorus-,- sulfurand nitrogen-containing 4 below: 5 reaction product obtained by reacting, at an elel'ablc I am; Condition g Oonaby yl'mprovingagent w m meme: Blots Filled N.N.
1 2 va 4 s a 4 6 None too 800 800800 300 60 7o ,70 itflfli Product 1 0 "0.0 0 0 otraoctrace 4.7 1.6 Pi'oduct l600000tr|oe 0 0 as 1.6 mm 11' 1 0 0 0 0 i 0 6 6 trees 6.0 1.6
The amount of improving agent used may be varied dependin upon the character of. the oil' ing agents of the type contemplated herein are generally used in amounts ranging from about per cent to about per cent, although preferred are amounts of the order of l per cent. It will, be understood. however, that larger amounts of the improving agents may be present in oil concentrates, which are also contemplated herein.
It is to be understood that while the preferred procedures which may be followed for the preparation of the reaction products contemplated herein are described hereinabove and various representative constituents in these improving agents have been referred to, such procedures and constituents have been used for illustrative purposes only. The invention, therefore, is not to be construed as limited by the specific examples given but includes within its scope such changes and modifications as fairly come within the spirit of the appended claims.
This application is a division of our copending application, Serial Number 598,418, filed June 8, 1945, now U. S. Patent 2,441,331, issued May 11, 1948.
We claim:
1. As a new composition of matter, an acidic,
' phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, a phosphorus sultide and a phosphorus amine of an alkyl-substituted hydroxyaromatic compound, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen and said alkyl substituent containing at least about ten carbon atoms.
3. As a new composition of matter, an acidic, phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, a phosphorus sulflde and a phosphorus amine of a paraflln waxsubstituted hydroxyaromatic compound, said product being characterized in that the phosvated temperature to prevent elimination of phosphorus from said product, a phosphorus sul- -flde and a phosphorus amine of a hydroxyaromatic compound, followed by substituting the acidic, phosphorus-, sulfurand nitrogen-containing phosphorus sulfide-phosphorus amine reaction product thus obtained with metal, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen.
5. As a new composition of matter, a metal-, phospnorus-, suli'urand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, a phosphorus sulnde and a phosphorus amine of an ailryl-substituted hydroxyaromatic compound, followed by substituting the acidic, phosphorus-, sulfurand nitrogen-containing phosphorus sulfide-phosphorus amine reaction product thus obtained with metal, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen and said alkyl substituent containing at least about ten carbon atoms.
6. As a new composition of matter, a metal-, phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, a phosphorus sulfide and a phosphorus amine of a paraflin-wax substituted hydroxyaromatic compound, followed by substituting the acidic, phosphorus-, sulfurand nitrogen-containing phosphorus sulfidephosphor-us amine reaction product thus obtained with metal, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen.
'7. As' a new composition of matter, an oilsoluble, acidic, phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, phosphorus pentasulflde and a phosphorus amine of an alkyl-substitued hydroxyaromatic compound, said product being characterized in that the phosphorus amine group thereof is linked to carbon through oxygen.
8. As a new composition of matter, an oilsoluble, acidic, phosphorus-, sulfurand nitrogen-containing reaction product obtained by reacting, at an elevated temperature to prevent elimination of phosphorus from said product, substantially one mol of phosphorus pentasulilde and two male of a phosphoamino-, paraflin waxsubstituted phenol, said product being characterized in that the phwphems er-1.21; i K is linked to carbon through men,
9. As a new composition of matter, mi @ib solubie. barium salt of an acidic, phosphorus-. sulfurand nitrogen-containing xwction praduct obtained, by reacting, at an elevated temperature to prevent elimination of phosphorus from said precinct, phosphorus penmemfide and. a, pheaphorus amine of a, parafin wexaufitituifi phenol, said product being chemeteme in mes the phosphorus amine group thereei is linked w carbon through oxy 10. As a new cemposition of matter, en misuiubie, barium salt oi an aeieiic, phospimms sulfurand nitrogen-containing reectien products ebteined by reacting, at an elevated tempemmre to prevent elimination of phosehoms fwm emifi preduet, phosphorus pentasmfide and a phase phoms amine of diamyi eilenei, said pmiiiuee Ee= The follewing references are of reward in the file of this patent:
UNITED STATES PATENTS Number 1,94%358 1314,8855 2,365,938 2,339,? m 2,3933% ZAMA'M WifififlM Berzlesm -i, may a,
Certificate of Correction Patent No. 2,479,407 August 16, 1949 ORLAND M. REIFF ET AL.
It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:
Coluum 6, line 35, for that portion of the equation reading N-RH read N-P-H; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case 1n the Patent Office.
Signed and sealed this 3rd day of January, A. D. 1950.
THOMAS F. MURPHY,
Assistant Uommtssioner of Patents.
Certificate of Correction Patent No. 2,479,407 August 16, 1949 ORLAND M. REIFF ET AL.
It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:
Column 6, line 35, for that portion of the equation reading N-R-H read N----PH; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiice.
Signed and sealed this 3rd day of January, A. D. 1950.
THOMAS F. MURPHY,
Assistant Oomz'asioner of Patents.
Priority Applications (1)
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US676582A US2479407A (en) | 1945-06-08 | 1946-06-13 | Hydroxyaromatic phosphorus aminephosphorus sulfide reaction products |
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Application Number | Priority Date | Filing Date | Title |
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US598418A US2441331A (en) | 1945-06-08 | 1945-06-08 | Mineral oil composition |
US676582A US2479407A (en) | 1945-06-08 | 1946-06-13 | Hydroxyaromatic phosphorus aminephosphorus sulfide reaction products |
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US2479407A true US2479407A (en) | 1949-08-16 |
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US676582A Expired - Lifetime US2479407A (en) | 1945-06-08 | 1946-06-13 | Hydroxyaromatic phosphorus aminephosphorus sulfide reaction products |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US2942020A (en) * | 1957-11-08 | 1960-06-21 | Benckiser Gmbh Joh A | Nu-substituted di-imido triphosphoric acid esters, and a process of making same |
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US2365938A (en) * | 1941-10-17 | 1944-12-26 | American Cyanamid Co | Wax substituted diaryl dithiophosphoric acids and salts thereof |
US2389718A (en) * | 1943-01-07 | 1945-11-27 | American Cyanamid Co | Disubstituted dithiophosphates |
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US1949956A (en) * | 1931-03-02 | 1934-03-06 | Peter C Reilly | Ore flotation and flotation reagent |
US1974885A (en) * | 1932-01-21 | 1934-09-25 | George H Wigton | Froth flotation of oxidized ores |
US2365938A (en) * | 1941-10-17 | 1944-12-26 | American Cyanamid Co | Wax substituted diaryl dithiophosphoric acids and salts thereof |
US2389718A (en) * | 1943-01-07 | 1945-11-27 | American Cyanamid Co | Disubstituted dithiophosphates |
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