US3185647A - Lubricant composition - Google Patents
Lubricant composition Download PDFInfo
- Publication number
- US3185647A US3185647A US227053A US22705362A US3185647A US 3185647 A US3185647 A US 3185647A US 227053 A US227053 A US 227053A US 22705362 A US22705362 A US 22705362A US 3185647 A US3185647 A US 3185647A
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- US
- United States
- Prior art keywords
- succinimide
- lubricating oil
- product
- carbon atoms
- polyamine
- 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.)
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- 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 System
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/22—Amides of acids of phosphorus
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- 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 System
- C07F9/02—Phosphorus compounds
- C07F9/04—Reaction products of phosphorus sulfur compounds with hydrocarbons
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- 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
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/52—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of 30 or more atoms
- C10M133/56—Amides; Imides
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- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
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- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/022—Well-defined aliphatic compounds saturated
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- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/024—Well-defined aliphatic compounds unsaturated
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- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/04—Well-defined cycloaliphatic compounds
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- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/06—Well-defined aromatic compounds
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- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/024—Propene
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- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
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- C10M2207/34—Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives
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- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
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- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
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- C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
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- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
- C10M2219/088—Neutral salts
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- C10M2219/089—Overbased salts
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- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
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- 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
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- C10M2227/02—Esters of silicic acids
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- C10N2010/00—Metal present as such or in compounds
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Definitions
- This invention pertains to lubricating oil compositions having incorporated therein metal-free detergents. These particular detergents are also eifective as corrosion inhibitors.
- a great number of the detergents which are added to crankcake oils to reduce this formation of sludges and varnishes are metal organic compounds, particularly those compounds wherein the metal is linked to an organic group through an oxygen atom.
- these metalcontaining organic compounds have some effectiveness as detergents for dispersing the precursors of the deposits within the oil itself rather than permitting them to form as deposits on the engine parts, they have the disadvantage of forming ash deposits in the engine. These ash deposits lower engine performance by fouling spark plugs and valves, and contributing to pre-ignition.
- these new additives disperse the undesirable polymeric products which are formed, and also inhibit corrosion to metal wearing surfaces.
- lubricating oil compositions particularly useful for heavy duty service are obtained by incorporating therein a product obtained by (1) reacting an N- alkyl alkenyl succinimide with phosphorus pentasulfide, followed by (2) reacting the product of (1) with a polyalkylene polyamine.
- lubricating oil compositions containing the reaction products described herein diesel and gasoline engine parts remain remarkably free of deposits and varnish, even under severe operating conditions.
- these lubricating oils reduce break-in wear.
- the N -alkylalkenyl succinimide reactant is of the formula "ice wherein R, the alkenyl radical, is a hydrocarbon radical having from 30 to 200 carbon atoms therein, preferably from 50 to 200 carbon atoms, and R is an alkyl radical having from 1 to 20 carbon atoms therein.
- alkenyl radicals include propylene polymers containing from 30 to 200 carbon atoms, and polymers of mixtures of l-butene and isobutene having from 30 to 200 carbon atoms.
- the polyalkylene polyamines are derived from polymers of ethylene or propylene, such as polyethylene polyamines, and polypropylene polyamines.
- Such polyalkylene polyamines may be represented by the formula wherein the R represents the divalent radical ethylene or propylene, and x is a number having a value from 1 to 10 or more.
- polyalkylene polyamines examples include diethylene triamine, triethylene tetramine, tetraethylene pentamine, pentaethylene hexamine, dipropylene triamine, dipropylene tetramine, tetrapropylene pentamine, pentapropylene hexamine, di(trimethylene) triamine, tri(trimethylene) tetramine, tetra-(trimethylene) pentamine and penta-(trimethylene) hexamine.
- polyalkylene polyamines can be exemplified by the aminoalkyl piperazines, for example, ,8 aminoethyl piperazine.
- the mol ratio of phosphorus pentasulfide to N-alkyl succinimide can vary from 5:1 to 1:20; preferably 1:1 to 1:4.
- the mol ratio of polyalkylene polyamine to the N-alkyl alkenyl succinimide can range from 0.5 :1 to 1:1; preferably 0.8 to 1.
- reaction temperature can vary from F. to 400 F., preferably from F. to 250 F.
- the reaction temperature is from 250 F. to about 450 F., preferably 280 F. to 350 F.
- Lubricating oils which can be used as base oils to form lubricating oil compositions of the above-described additives include a wide variety of lubricating oils, such as naphthenic base, paraflin base,'and mixed base lubricating oils, other hydrocarbon lubricants, e.g.
- alkylene polymers such as polymers of propylene, butylene, etc., and the mixtures thereof
- alkylene oxide-type polymers e.g., propylene oxide polymers
- derivatives including alkylene oxide polymers prepared by polymerizing the alkylene oxide in the presence of water or alcohols, e.g., ethyl alcohol, dicarboxylic acid esters (such as those which are prepared by esterifying such dicarboxylic acids as adipic acid, azelaic acid, suberic acid, sebacic acid, alkenyl succinic acid, fumaric acid, maleic acid, etc., with alcohols such as butyl alcohol, hexyl alcohol, 2-ethyl hexyl alcohol, dodecyl alcohol, etc.), liquid esters of acids of phosphorus, alkyl benzenes (e.g., monoalkyl benzene
- n-nonyl Z-ethyl hexyl benzene polyphenyls (e.g., biphenyls and terphenyls), alkyl biphenyl ethers, compounds of silicon (e.g., tetraethyl silicate, tetraisopropyl silicates, tetra (4- methyl- Z-tetraethyl) silicate, hexyl (4-methyl-2-pentoxy) disiloxane, poly(methyl) siloxane, poly(methylphenyl) siloxane, etc.
- Synthetic oils of the alkylene oxide-type polymers which may be used include those exemplified by the alkylene oxide polymers.
- oils in amounts of 0.1% to 40% by weight, preferably 0.1% to 15%; more preferably, 1% to 10%.
- reaction product useful herein as corrosion inhibitors and detergents in lubricating oil compositions illustrate the formation of the reaction product useful herein as corrosion inhibitors and detergents in lubricating oil compositions.
- EXAMPLE I A mixture of 51 grams (0.23 mol) of phosphorus pentasulfide, 500 grams of an oil solution of N-butyl polyisobutenyl succinimide (0.21 mol), wherein the polyisobutenyl radical contained an average of approximately 66 carbon atoms, and 500 grams of xylene was heated at reflux temperatures for a period of hours under a blanket of nitrogen. The xylene was distilled off under reduced pressure (310 F. bottoms temperature at 4 mm.). For convenience the product is called Product A.
- the reaction product contained:
- EXAMPLE H A mixture of 137.6 grams (0.62 mol) of phosphorus pentasulfide, 2700 grams (1.24 mols) of an oil solution of N-butyl polyisobntenyl succinirnide, and 2700 grams of xylene was heated at reflux temperature for 5 hours. The Xylene was removed by heating the mixture at 310 F. at an absolute pressure of 4 mm. Hg. The remaining product was dissolved in hexane and filtered, and the hexane was removed.
- Table I hereinbelow presents further data on the effectiveness of the reaction products described herein as lubricating oil additives.
- the data of Table I were obtained after 60 hours of operating under the severe conditions of a Caterpillar 1-H engine test used to qualify oils under the Mil 2104B procedure. This military specification procedure is so severe that the engine will not even operate with a base oil uncompounded. Even a base oil with the normal commercial additives under this procedure does not provided sufiicient lubrication; that is, the engine itself eventually sticks.
- the base oil used in obtaining data-for Table I consisted of a California paraiiinic base oil having a viscosity of 500 SSU at F., and having incorporated therein 15 mM./kg. (i.e., 15 millimols of metal per kilogram of the finished lubricating oil composition) of a basic sulfurized calcium phenate, and 12 mM./kg of a zinc dialkyl dithiophosphate.
- the PD Nos. refer to the piston discoloration rating. After the engine test, the three piston lands are examined visually. To a piston land which is completely black is assigned a PD No. of 800; to one which is completely clean, a PD No. of 0; to those intermediate between those completely black and completely clean are assigned PD Nos. intermediate in proportion to the extent and degree of darkening.
- the GD No. refers to the percentage deposit in the top piston ring groove; that is, a 0 evaluation being a clean groove, and a 100 evaluation being a groove full of deposits.
- the base oil consisted of a California parafiinic base oil having a viscosity of 500 SSU at 100 F., 14 mM./kg. of a zinc dialkyl dithiophosphate, and 4 mM./kg. of a zinc di(alkylphenyl) dithiophosphate.
- the lubricating oils herein may contain other corrosion inhibitors, oxidation inhibitors, thickening agents, viscosity index improving agents, rust inhibitors, etc.
- a lubricating oil composition comprising a major proportion of a lubricating oil having incorporated therein from 0.1% to 40% of a product obtained by 1) reacting an N-alkyl alkenyl succinimide having from 30 to 200 carbon atoms in said alkenyl group and from 1 to 20 phosphorus pentasulfide-succinimide product is reacted carbon atoms in said alkyl radical with phosphorus pentawith said polyalkylene polyamide at temperatures from sulfide at temperatures firom 70 F. to 400 F. wherein 280 F. to 350 F.
- the lubricating oil composition of claim 3 wherein from 5:1 to 1:20 followed by (2) reacting the product 5 said product is present in amounts from 0:1 to 15% by of (*1) with a polyalkylene polyamide at temperatures weight.
- amine to succinimide is from 0.511 to 1:1, said polysaid phosphorus pentasulfide-succinimide mole ratio is alkylene polyamine being of the formula from 1:1 to 1:4.
Description
United States Patent 3,185,647 LUBRICANT COMPOSITION Robert G. Anderson, Novato, and Yngve G. Hendrickson, El Cerrito, Califi, assignors to California Research Corporation, San Francisco, Calif., a corporation of Delaware No Drawing. Filed Sept. 28, 1962, Ser. No. 227,053 5 Claims. (Cl. 252-46.7)
This invention pertains to lubricating oil compositions having incorporated therein metal-free detergents. These particular detergents are also eifective as corrosion inhibitors.
Present day internal combustion engines operate at high speeds and high compression ratios. When used in the so-called city stop-and-go driving, which includes the greater part of the driving conditions for a large percentage of todays automobiles, the internal combustion engines do not reach the most eificient operating temperature. Under city driving conditions, large amounts of partial oxidation products are formed, and reach the crankcase of the engine by blowing past the piston rings. This phenomenon is noticed more in engines having greater wear during the break-in period. Most of the partial oxidation products are oil-insoluble, tending to form deposits on the various operating parts of the engine, such as the pistons, piston rings, etc. For the purpose of preventing the deposition of these products on the various engine parts, and to reduce break-in wear, it is necessary to incorporate detergents and wear-reducing agents in the lubricating oil compositions, thus keeping these polymeric products dispersed in a condition unfavorable for deposition on metals.
A great number of the detergents which are added to crankcake oils to reduce this formation of sludges and varnishes are metal organic compounds, particularly those compounds wherein the metal is linked to an organic group through an oxygen atom. Although these metalcontaining organic compounds have some effectiveness as detergents for dispersing the precursors of the deposits within the oil itself rather than permitting them to form as deposits on the engine parts, they have the disadvantage of forming ash deposits in the engine. These ash deposits lower engine performance by fouling spark plugs and valves, and contributing to pre-ignition.
It is a particular object of this invention to provide lubricating oil compositions having incorporated therein metal-free detergents which are also effective as corrosion inhibitors. Thus, these new additives disperse the undesirable polymeric products which are formed, and also inhibit corrosion to metal wearing surfaces.
Therefore, in accordance with this invention, it has been found that lubricating oil compositions particularly useful for heavy duty service are obtained by incorporating therein a product obtained by (1) reacting an N- alkyl alkenyl succinimide with phosphorus pentasulfide, followed by (2) reacting the product of (1) with a polyalkylene polyamine.
By the use of lubricating oil compositions containing the reaction products described herein, diesel and gasoline engine parts remain remarkably free of deposits and varnish, even under severe operating conditions. In addition, these lubricating oils reduce break-in wear.
The N -alkylalkenyl succinimide reactant is of the formula "ice wherein R, the alkenyl radical, is a hydrocarbon radical having from 30 to 200 carbon atoms therein, preferably from 50 to 200 carbon atoms, and R is an alkyl radical having from 1 to 20 carbon atoms therein.
Examples of alkenyl radicals include propylene polymers containing from 30 to 200 carbon atoms, and polymers of mixtures of l-butene and isobutene having from 30 to 200 carbon atoms.
Examples of alkyl radicals include propyl, butyl, amyl, isoamyl, hexyl, isohexyl, octyl, isooctyl, Z-ethylhexyl, decyl, etc.
The polyalkylene polyamines are derived from polymers of ethylene or propylene, such as polyethylene polyamines, and polypropylene polyamines. Such polyalkylene polyamines may be represented by the formula wherein the R represents the divalent radical ethylene or propylene, and x is a number having a value from 1 to 10 or more. Examples of these polyalkylene polyamines include diethylene triamine, triethylene tetramine, tetraethylene pentamine, pentaethylene hexamine, dipropylene triamine, dipropylene tetramine, tetrapropylene pentamine, pentapropylene hexamine, di(trimethylene) triamine, tri(trimethylene) tetramine, tetra-(trimethylene) pentamine and penta-(trimethylene) hexamine.
Other polyalkylene polyamines can be exemplified by the aminoalkyl piperazines, for example, ,8 aminoethyl piperazine.
The mol ratio of phosphorus pentasulfide to N-alkyl succinimide can vary from 5:1 to 1:20; preferably 1:1 to 1:4.
With regard to the polyalkylene polyamine, the mol ratio of polyalkylene polyamine to the N-alkyl alkenyl succinimide can range from 0.5 :1 to 1:1; preferably 0.8 to 1.
In the reaction herein between the N-alkyl alkenyl succinimide and the P 8 the reaction temperature can vary from F. to 400 F., preferably from F. to 250 F.
In the reaction between the P S -succinimide product and polyalkylene polyamine, the reaction temperature is from 250 F. to about 450 F., preferably 280 F. to 350 F.
Lubricating oils which can be used as base oils to form lubricating oil compositions of the above-described additives include a wide variety of lubricating oils, such as naphthenic base, paraflin base,'and mixed base lubricating oils, other hydrocarbon lubricants, e.g. lubricating oils derived from coal products, and synthetic oils, e.g., alkylene polymers (such as polymers of propylene, butylene, etc., and the mixtures thereof), alkylene oxide-type polymers (e.g., propylene oxide polymers) and derivatives, including alkylene oxide polymers prepared by polymerizing the alkylene oxide in the presence of water or alcohols, e.g., ethyl alcohol, dicarboxylic acid esters (such as those which are prepared by esterifying such dicarboxylic acids as adipic acid, azelaic acid, suberic acid, sebacic acid, alkenyl succinic acid, fumaric acid, maleic acid, etc., with alcohols such as butyl alcohol, hexyl alcohol, 2-ethyl hexyl alcohol, dodecyl alcohol, etc.), liquid esters of acids of phosphorus, alkyl benzenes (e.g., monoalkyl benzene such as dodecyl benzene, tetradecyl benzene, etc., and dialkyl benzenes (e.g. n-nonyl Z-ethyl hexyl benzene); polyphenyls (e.g., biphenyls and terphenyls), alkyl biphenyl ethers, compounds of silicon (e.g., tetraethyl silicate, tetraisopropyl silicates, tetra (4- methyl- Z-tetraethyl) silicate, hexyl (4-methyl-2-pentoxy) disiloxane, poly(methyl) siloxane, poly(methylphenyl) siloxane, etc. Synthetic oils of the alkylene oxide-type polymers which may be used include those exemplified by the alkylene oxide polymers.
3 The products described herein can be used in oils in amounts of 0.1% to 40% by weight, preferably 0.1% to 15%; more preferably, 1% to 10%.
The following examples illustrate the formation of the reaction product useful herein as corrosion inhibitors and detergents in lubricating oil compositions.
EXAMPLE I A mixture of 51 grams (0.23 mol) of phosphorus pentasulfide, 500 grams of an oil solution of N-butyl polyisobutenyl succinimide (0.21 mol), wherein the polyisobutenyl radical contained an average of approximately 66 carbon atoms, and 500 grams of xylene was heated at reflux temperatures for a period of hours under a blanket of nitrogen. The xylene was distilled off under reduced pressure (310 F. bottoms temperature at 4 mm.). For convenience the product is called Product A.
A mixture of 250.12 grams of Product A and 16.0 grams of tetraethylene pentamine was heated to 150 F., using a blanket of nitrogen over the reaction mixture. The mixture was slowly heated to 350 F. at an absolute pressure of 4 mm. Hg, and heated at that temperature and pressure for 2 hours.
The reaction product contained:
EXAMPLE H A mixture of 137.6 grams (0.62 mol) of phosphorus pentasulfide, 2700 grams (1.24 mols) of an oil solution of N-butyl polyisobntenyl succinirnide, and 2700 grams of xylene was heated at reflux temperature for 5 hours. The Xylene was removed by heating the mixture at 310 F. at an absolute pressure of 4 mm. Hg. The remaining product was dissolved in hexane and filtered, and the hexane was removed.
A mixture of 2600 grams of the above product and 166 grams of tetraethylene pentamine was heated to 150 F., followed by heating at 350 F at an absolute pressure of 4 mm. Hg for 2 hours The reaction product contained:
Wt. percent Phosphorus 1.3 0 Sulfur 1.26 Nitrogen 2.60
EXAMPLE III Wt. percent Phosphorus 1.06 Sulfur 0.88 Nitrogen 2.65
Table I hereinbelow presents further data on the effectiveness of the reaction products described herein as lubricating oil additives. The data of Table I were obtained after 60 hours of operating under the severe conditions of a Caterpillar 1-H engine test used to qualify oils under the Mil 2104B procedure. This military specification procedure is so severe that the engine will not even operate with a base oil uncompounded. Even a base oil with the normal commercial additives under this procedure does not provided sufiicient lubrication; that is, the engine itself eventually sticks.
The base oil used in obtaining data-for Table I consisted of a California paraiiinic base oil having a viscosity of 500 SSU at F., and having incorporated therein 15 mM./kg. (i.e., 15 millimols of metal per kilogram of the finished lubricating oil composition) of a basic sulfurized calcium phenate, and 12 mM./kg of a zinc dialkyl dithiophosphate.
The PD Nos. refer to the piston discoloration rating. After the engine test, the three piston lands are examined visually. To a piston land which is completely black is assigned a PD No. of 800; to one which is completely clean, a PD No. of 0; to those intermediate between those completely black and completely clean are assigned PD Nos. intermediate in proportion to the extent and degree of darkening.
The GD No. refers to the percentage deposit in the top piston ring groove; that is, a 0 evaluation being a clean groove, and a 100 evaluation being a groove full of deposits.
Table I GD Break-in- Composition Hrs. PD Nos. No. Wear,
mgs. loss 1. Base Oil 4% wt. Product of Example I 60 245--110-5 8 199 120 305--135-5 13 336 2. Base oil 4% wt. Product of Example II 60 200- 65-1454) 6 296 120 215-120-140-0 11 487 Table II hereinbelow presents data showing the effectiveness of the compounds described herein as lubricating oil additives by testing a lubricating oil composition in an L-38 Test, using a 1 cylinder CLR engine in a test period of 40 hours.
The base oil consisted of a California parafiinic base oil having a viscosity of 500 SSU at 100 F., 14 mM./kg. of a zinc dialkyl dithiophosphate, and 4 mM./kg. of a zinc di(alkylphenyl) dithiophosphate.
Table II Bearing weight loss (milligrams) Composition: (1) Base oil+6.25% of product of Example II 310 Table III PD Nos. Composition Hours GD Nos.
Land Skirt 1. Base Oil+2% Product of Example 60 1 0 m 120 1 5-0-0 0 In addition to the additives described hereinabove, the lubricating oils herein may contain other corrosion inhibitors, oxidation inhibitors, thickening agents, viscosity index improving agents, rust inhibitors, etc.
We claim:
1. A lubricating oil composition comprising a major proportion of a lubricating oil having incorporated therein from 0.1% to 40% of a product obtained by 1) reacting an N-alkyl alkenyl succinimide having from 30 to 200 carbon atoms in said alkenyl group and from 1 to 20 phosphorus pentasulfide-succinimide product is reacted carbon atoms in said alkyl radical with phosphorus pentawith said polyalkylene polyamide at temperatures from sulfide at temperatures firom 70 F. to 400 F. wherein 280 F. to 350 F.
the phosphorus pentasulfide-succinimide mol ratio is 4. The lubricating oil composition of claim 3 wherein from 5:1 to 1:20 followed by (2) reacting the product 5 said product is present in amounts from 0:1 to 15% by of (*1) with a polyalkylene polyamide at temperatures weight.
from 250 F. to 450 F. wherein the mol ratio of poly- 5. The lubricating oil composition of claim 4 wherein amine to succinimide is from 0.511 to 1:1, said polysaid phosphorus pentasulfide-succinimide mole ratio is alkylene polyamine being of the formula from 1:1 to 1:4.
I 10 NH2R (NHR)XNH2 References Cited by the Examiner wherein R is selected from the group consisting of ethyl- UNITED STATES PATENTS ene and propylene and x as a number firom 1 to 10.
2. The lubricating oil composition of claim 1 wherein 2,733,235 Cross et 25232'7 said polyamine is tetraethylene pentamine. 5 2,773,862 Musselman 252-327 3. The lubricating oil composition of claim 1 wherein 3,013,247 1/62 Anderson et a1 252 3Q"7 said succinimide is reacted with said phosphorus pentasulfide at temperatures from 175 F. to 250 F., and said DANIEL WYMAN Primary Examiner UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No; 3,185,647 May 25, 1965 Robert G. Anderson et ale It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.
Column 1, lines 67 to 72, for that portion of the formula reading O RCH-C/ read R-CH-c column 3, line 73, for "provided" read provide column 5, line 6 and column 6, line 2,-for- "polyamide", each occurrence, read polyamine Signed and sealed this 19th day of October 1965 (SEAL) Attest:
ERNEST W. SWIDER EDWARD J. BRENNER Attestlng Officer Commissioner of Patents UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,185,647 May 25, 1965 Robert G. Anderson et al.
It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.
Column 1, lines 67 to 72, for that portion of the formula reading %R read R-CIL/ column 3, line 73, for "provided" read provide column 5, line 6 and column 6, line 2, for "polyamide", each occurrence, read polyamine R-CH-C Signed and sealed this 19th day of October 1965 (SEAL) Allest:
ERNEST W. SWIDER EDWARD J. BRENNER Attesting Officer Commissioner of Patents
Claims (1)
1. A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL HAVING INCORPORATED THEREIN FROM 0.1% TO 40% OF A PRODUCT OBTAINED BY (1) REACTING AN N-ALKYL ALKENYL SUCCINIMIDE HAVING FROM 30 TO 200 CARBON ATOMS IN SAID ALKENYL GROUP AND FROM 1 TO 20 CARBON ATOMS IN SAID ALKYL RADICAL WITH PHOSPHORUS PENTASULFIDE AT TEMPERATURES FROM 70*F. TO 400*F. WHEREIN THE PHOSPHORUS PENTASULFIDE-SUCCINIMIDE MOL RATIO IS FROM 5:1 TO 1:20 FOLLOWED BY (2) REACTING THE PRODUCT OF (1) WITH A POLYALKYLENE POLYAMIDE AT TEMPERATURES FROM 250*F. TO 450*F. WHEREIN THE MOL RATIO OF POLYAMINE TO SUCCINIMIDE IS FROM 0.5:1 TO 1:1, SAID POLYALKYLENE POLYAMINE BEING OF THE FORMULA
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