US3439011A - Amine-hydrocarbyl acid-orthophosphate-zinc halide complexes - Google Patents

Amine-hydrocarbyl acid-orthophosphate-zinc halide complexes Download PDF

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US3439011A
US3439011A US615873A US3439011DA US3439011A US 3439011 A US3439011 A US 3439011A US 615873 A US615873 A US 615873A US 3439011D A US3439011D A US 3439011DA US 3439011 A US3439011 A US 3439011A
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complex
acid
carbon atoms
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orthophosphate
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Frederic C Mccoy
Edwin C Knowles
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Texaco Inc
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Texaco Inc
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    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
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Definitions

  • the present invention relates to a novel amine complex of a hydrocarbyl substituted acid-orthophosphate and a zinc halide.
  • the invention also relates to a lubricating oil composition containing the novel amine complex.
  • the novel complex of this invention is represented by the formula:
  • R is an alkyl radical having from 6 to 24 carbon atoms
  • R is a hydrocarbyl radical having from 2 to 24 carbon atoms
  • R" is hydrogen or a hydrocarbyl radical having from 4 to 24 carbon atoms, the sum of the carbon atoms in R and R" being in the range of 10 to 30 carbon atoms
  • X is a halogen
  • a is a number from 1 to 2
  • b is a number from 1 to 20.
  • the preferred complex is one in which R is a tertiary alkyl radical having from 10 to 24 carbon atoms, R is an alkyl radical having from 4 to 12 carbon atoms, R" is hydrogen or an alkyl radical having from 4 to 12 carbon atoms, the sum of the carbon atoms in R and R" being in the range of 10 to 20 carbon atoms, X is a halogen, a is a number from 1 to 2 and b is a number from 4 to 20.
  • the complex is prepared by first reacting an amine with a hydrocarbyl acid orthophosphate compound until a substantially neutral amine salt complex is formed.
  • the amount of the amine necessary depending on the number of free acid hydrogens present in the hydrocarbyl-substituted acid orthophosphate.
  • This invention is limited to complexes in which the orthophosphate has no more than two free acid hydrogens and accordingly 2 is the upper limit for the value of a.
  • the value of a can be between 1 and 2.
  • the substantially neutral amine salt is further reacted with a zinc halide to prepare the novel complex of the invention.
  • the mole ratio of the amine salt complex to the zinc halide can range from 1:1 to 20:1 respectively although the preferred ratio for this reaction is in the range from about 4:1 to 20:1.
  • the higher ratios of the amine salt complex to zinc halide provide outstanding stability in the formulated lubricating composition.
  • Amines which can be used for making the complex of the invention are the alkyl amines corresponding to the formula:
  • R is an alkyl radical having from 6 to 24 carbon atoms.
  • the preferred amines are those in which R is a tertiary alkyl radical having from 10 to 24 carbon atoms.
  • Suitable amines include octylamine, laurylamine, octadecylamine, di-Z-ethylhexylamine, eicosylamine, tr cosylamine, dimethyl dodecylamine, methyl octadecylamine and the like.
  • Particularly preferred amines are certain commercially available mixtures of tertiary alkyl primary amines.
  • a mixture of tertiary alkyl primary amines in which the alkyl radical comprises a mixture of alkyl groups having 11 to 14 carbon atoms is known as Primene 81-R.
  • Another mixture of teritary alkyl primary amines in which the alkyl radical comprises a mixture of alkyl groups having 18 to 24 carbon atoms is known as Primene JM-T.
  • hydrocarbyl acid orthophosphate component of the complex is represented by the formula:
  • R is a hydrocarbyl radical having from 2 to 24 carbon atoms
  • R" is hydrogen or a hydrocarbyl radical having from 4 to 24 carbon atoms, the sum of the carbon atoms in R and R being in the range of 10 to 30.
  • the preferred orthophosphate component is one in which R is an alkyl radical having from 4 to 12 carbon atoms, R" is hydrogen or an alkyl radical having from 4 to 12 carbon atoms and the sum of the carbon atoms in R and R is in the range from 10 to 20.
  • hydrocarbyl acid orthophosphate compounds which can be employed include isoamyl isooctyl acid o-phosphate, et-hyl oleyl acid-o-phosphate, diphenyl acid o-phosphate, isomyl-2-ethylhexyl acid o-phosphate, monostearyl acid o-phosphate, di-isoamyl acid o-phosphate and mono octylphenyl acid o-phosphate.
  • the inorganic component of the complex of the invention is a zinc halide represented by the formula ZnX in which X is a fluoride, chloride, bromide, or iodide ion.
  • X is a fluoride, chloride, bromide, or iodide ion.
  • the fluorides and chlorides are the preferred halides for high load-carrying properties in the lubricating oil compositions.
  • TBN and TAN used in the example refer to total base member and total acid number respectively.
  • the molar ratio alkyl ammonium phosphate to zinc fluoride is 4:1.
  • Example V 195 g. (0.62 mol) Primene JM-T were charged to a flask and 100 g. mono-dioctyl acid orthophosphate (a commercial mixture of approximately equal amounts of mono octyl acid orthophosphate and dioctyl acid orthophosphate having a TAN of 348 were added slowly with stirring. The reaction temperature rose from 28 C. to 70 C. Then 4.6 g. of anhydrous zinc fluoride (0.045 mol) and 20 ml. water were added. The mixture was heated to reflux for 4 hours. Toluene, 100 ml., was added and 20 ml. of water removed as a toluene-water azeotrope.
  • mono-dioctyl acid orthophosphate a commercial mixture of approximately equal amounts of mono octyl acid orthophosphate and dioctyl acid orthophosphate having a TAN of 348 were added slowly with stirring. The reaction temperature rose from 28 C. to 70 C
  • the toluene solution was filtered through paper and 1.2 g. dry powder recovered.
  • the toluene was stripped to a pot temperature of 160 C. using a stream of nitrogen.
  • the product (293 g.) was a viscous liquid molar ratio of alkyl ammonium phosphate to zinc fluoride calculated to be 18.7:1.
  • the lubricating composition of the invention was prepared by blending in a conventional way a minor amount of the oil-soluble, load-carrying complex described here ina-bove into a suitable lubricating oil base.
  • the complex is employed in an amount in the range of 0.05 to 10 percent by weight based on the Weight of the lubricating oil composition with the preferred amount being from about 0.1 to 3 weight percent.
  • the base lubricating oil can be either a mineral lubricating oil or a synthetic lubricating oil.
  • the mineral lubricating oil can be predominantly paraflinic or naphthenic or it can be a mixture of both types of mineral oils.
  • the mineral oil will be a refined oil of predominantly paraflinic nature having a viscosity in the range from 30 to Saybolt Universal seconds at 210 F.
  • Various types of synthetic lubricating oil bases can be employed for preparing the lubricants according to this invention.
  • Aliphatic ester, polyalkylene oxides, silicones, esters of phosphoric and salicyclic acid and the highly fluorine-substituted hydrocarbons can be employed.
  • Examples of the aliphatic esters include di-(Z-ethylhexyl) sebacate, the dialkyl azelates, dialkyl suberates, and the dialkyl adipates such as di-hexyl azelate, di-(2-ethylhexyl) azelate, di-3,5,5-trimethylhexyl gluterate, di (2 ethylhexyl) adipate, triamyl tricarballylate, etc.
  • the polyalkylene oxides include polypropylene oxide, polyisopropylene oxide diether, polyisopropylene oxide diesters, etc.
  • the silicones include methyl silicone, methylphenyl silicone, and the silicates include tetraisooctyl silicate.
  • the highly fluorinated hydrocarbons include fluorinated oil, perfluorohydrocarbons, etc.
  • neopentyl glycol esters such as the neopentyl glyc'ol propionates, neopentyl glycol butyrates and neopentyl glycol caprylates and the trimethylol alkanes such as trimethylol ethane, trimethylol propene, trimethylol pentane, trimethylol heptane, and trimethylol dodecane and the like.
  • the phosphate esters include tricresyl phosphate, trioctyl phosphate and tridecyl phosphate as well as mixed aryl and alkyl phosphates.
  • the load-carrying and rust-resistant properties of lubricating oil compositions of the invention making them particularly suitable as gas turbine lubricants were determined by preparing a mixture of the complex in a synthetic lubricating oil. In the tests below, the formulated oil contained 1 percent by weight of the additive complex.
  • the load-carrying property was determined by the Ryder Gear Test (Federal Test Method 6508). In this test, the lubricant is employed to lubricate two spur gears in a Pratt and Whitney Gear and Lubricant Tester. The tester is operated at a gear speed of 10,000 r.p.m. using an oil inlet temperature of F. The load in the gear is increased in increments of 5 p.s.i. until 22.5 percent of the total tooth face area on the driving gear has been scuffed, the load applied in this run being considered the scutf load. The tooth load is then calculated in pounds per inch of tooth width.
  • the rust inhibiting properties of the lubricating oils were determined according to the well-known Humidity Cabinet procedure outlined in US. Military Specification MIL-L-21260 (corresponds to Federal Test Method Standard No, 791A, Method 5329).
  • the base oils employed in the preparation of gas turbine lubricating compositions were synthetic ester base oils.
  • Base Oil A consisted of 96.6 percent by weight of a pentaerythritol ester plus the following additives: 1 percent phenothiazine, 2 percent dioctyldiphenylamine, 0.1 percent quinizarin and 0.3 percent methacrylate estermineral 'oil solution.
  • the ester is made by esterifying technical grade pentaerythritol with a mixture of 38 percent valeric, 13 percent 2-methylpentanoic, 32 percent octanoic and 17 percent pelargonic acids. This ester has the following properties:
  • Base Oil B was a commercial synthetic ester consisting essentially of di-Z-ethylhexyl sebacate (Plexol 2014).
  • the improvement in the wear properties of a lubricating composition containing the complex of the invention was demonstrated in a gear oil formulation using the 4-Ball Wear Test.
  • This test is conducted in a device employing four steel balls, three of which are in contact with each 'other in one plane in a fixed, triangular position in a reservoir containing the oil sample. The fourth ball is above and in contact with the other three.
  • the upper ball is rotated while it is pressed against the lower three balls, the pressure being applied by weights and a lever arm.
  • the diameter of the scars on the three lower balls are measured by means of a low power microscope.
  • the average diameter measured in two directions on each of the three lower balls, is taken as a measure of the anti-wear characteristics of the lubricant.
  • the oil employed in this test was a mineral lubricating oil having an SUS viscosity at 210 F. 'of about 95.
  • a commercial anti-wear agent of the sulfurized olefin type containing 46 percent sulfur was added to the mineral oil in the amount of 3 percent by weight of the composition and this composition was designated Base Oil C.
  • the oil containing the complex of the invention also contained 1 percent by weight of an oil solution of a polymethacrylate resin. This polymethacrylate resin solution consisted of about 30 percent resin comprising 14 percent butyl, 12 percent hexyl, 42 percent lauryl and 32 percent stearyl methacrylate resins in the oil carrier.
  • the methacrylate resin solution was added to the test oil solely to improve the viscosity of the oil and has no efiect 'on the extreme pressure or load-carrying properties of the lubricating oil composition.
  • the anti-wear property of the base oil which already possessed a high anti-wear property due to the presence of 3 weight percent of a commercial anti-wear additive, was surprisingly reduced more than half by the complex of the invention. This was a remarkable and unexpected improvement in the load-carrying properties of the mineral oil composition.
  • R is an alkyl radical having from 6 to 24 carbon atoms
  • R is a hydrocarbyl radical having from 2 to 24 carbon atoms
  • R" is selected from the group consisting of hydrogen and a hydrocarbyl radical having from 4 to 24 carbon atoms, the sum of the carbon atoms in R and R being in the range from 10 to 30,
  • X is a halogen, a is a number from 1 to 2 and b is a number from 1 to 20.
  • R is a tertiary alkyl radical having from 10 to 24 carbon atoms
  • R is an alkyl radical having from 4 to 12 carbon atoms
  • R" is selected from the group consisting of hydrogen and an alkyl radical having from 4 to 12 carbon atoms, the sum of the carbon atoms in R and R" being in the range of 10 to 20 carbon atoms
  • X is a halogen
  • a is a number from 1 to 2
  • b is a number from 4 to 20.
  • R is a tertiary C1844 alkyl radical, R is the isoamyl radical and R is the isooctyl radical.
  • R is a tertiary C1144 alkyl radical
  • R is the isoamyl radical
  • R" is the isooctyl radical
  • R is a tertiary C alkyl radical, R is the isoamyl radical and R is the isooctyl radical.
  • R is a tertiary C1844 alkyl radical
  • R is an octyl radical
  • R is selected from the group consisting of hydrogen and an octyl radical
  • R is a tertiary C1844 alkyl radical
  • R is an octyl radical
  • R is selected from the group consisting of hydrogen and an octyl radical

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Description

United States Patent ()flice 3,439,011 Patented Apr. 15, 1969 3,439,011 AMlNE-HYDROCARBYL ACID-ORTHOPHOS- PHATE-ZINC HALIDE COMPLEXES Frederic C. McCoy, Beacon, and Edwin C. Knowles,
Poughkeepsie, N.Y., assignors to Texaco Inc., New York, N.Y., a corporation of Delaware No Drawing. Original application Sept. 30, 1965, Ser. No. 491,822, now Patent No. 3,340,189, dated Sept. 5, 1967. Divided and this application Dec. 13, 1966, Ser.
Int. Cl. (107i 3/06 US. Cl. 260-4293 9 Claims This application is a division of application Ser. No. 491,822 filed Sept. 30, 1965 and now US. Patent No. 3,340,189.
The present invention relates to a novel amine complex of a hydrocarbyl substituted acid-orthophosphate and a zinc halide. The invention also relates to a lubricating oil composition containing the novel amine complex.
Developments in the gas turbine engine field have resulted in extensive efforts to formulate lubricating oil compositions having a high level of load-carrying properties in conjunction with low wear, rust protective properties and resistance to oxidation. From the many complexes prepared and tested, a new class of complex additives has been discovered which has outstanding properties in lubricating oil compositions and which promises to meet the stringent requirements of new and advanced gas turbine engines. In addition, these complexes provide substantial improvements in more conventional lubricants, such as gear oils, transmission fluids, automotive greases and the like.
The novel complex of this invention is represented by the formula:
wherein R is an alkyl radical having from 6 to 24 carbon atoms, R is a hydrocarbyl radical having from 2 to 24 carbon atoms, R" is hydrogen or a hydrocarbyl radical having from 4 to 24 carbon atoms, the sum of the carbon atoms in R and R" being in the range of 10 to 30 carbon atoms, X is a halogen, a is a number from 1 to 2 and b is a number from 1 to 20. The preferred complex is one in which R is a tertiary alkyl radical having from 10 to 24 carbon atoms, R is an alkyl radical having from 4 to 12 carbon atoms, R" is hydrogen or an alkyl radical having from 4 to 12 carbon atoms, the sum of the carbon atoms in R and R" being in the range of 10 to 20 carbon atoms, X is a halogen, a is a number from 1 to 2 and b is a number from 4 to 20.
The complex is prepared by first reacting an amine with a hydrocarbyl acid orthophosphate compound until a substantially neutral amine salt complex is formed. The amount of the amine necessary depending on the number of free acid hydrogens present in the hydrocarbyl-substituted acid orthophosphate. This invention is limited to complexes in which the orthophosphate has no more than two free acid hydrogens and accordingly 2 is the upper limit for the value of a. When a commercial mixture of hydrocarbyl acid orthophosphates is employed, the value of a can be between 1 and 2.
The substantially neutral amine salt is further reacted with a zinc halide to prepare the novel complex of the invention. The mole ratio of the amine salt complex to the zinc halide can range from 1:1 to 20:1 respectively although the preferred ratio for this reaction is in the range from about 4:1 to 20:1. The higher ratios of the amine salt complex to zinc halide provide outstanding stability in the formulated lubricating composition.
Amines which can be used for making the complex of the invention are the alkyl amines corresponding to the formula:
in which R is an alkyl radical having from 6 to 24 carbon atoms. The preferred amines are those in which R is a tertiary alkyl radical having from 10 to 24 carbon atoms. Suitable amines include octylamine, laurylamine, octadecylamine, di-Z-ethylhexylamine, eicosylamine, tr cosylamine, dimethyl dodecylamine, methyl octadecylamine and the like. Particularly preferred amines are certain commercially available mixtures of tertiary alkyl primary amines. A mixture of tertiary alkyl primary amines in which the alkyl radical comprises a mixture of alkyl groups having 11 to 14 carbon atoms is known as Primene 81-R. Another mixture of teritary alkyl primary amines in which the alkyl radical comprises a mixture of alkyl groups having 18 to 24 carbon atoms is known as Primene JM-T.
The hydrocarbyl acid orthophosphate component of the complex is represented by the formula:
in which R is a hydrocarbyl radical having from 2 to 24 carbon atoms, R" is hydrogen or a hydrocarbyl radical having from 4 to 24 carbon atoms, the sum of the carbon atoms in R and R being in the range of 10 to 30. The preferred orthophosphate component is one in which R is an alkyl radical having from 4 to 12 carbon atoms, R" is hydrogen or an alkyl radical having from 4 to 12 carbon atoms and the sum of the carbon atoms in R and R is in the range from 10 to 20.
Specific hydrocarbyl acid orthophosphate compounds which can be employed include isoamyl isooctyl acid o-phosphate, et-hyl oleyl acid-o-phosphate, diphenyl acid o-phosphate, isomyl-2-ethylhexyl acid o-phosphate, monostearyl acid o-phosphate, di-isoamyl acid o-phosphate and mono octylphenyl acid o-phosphate.
The inorganic component of the complex of the invention is a zinc halide represented by the formula ZnX in which X is a fluoride, chloride, bromide, or iodide ion. The fluorides and chlorides are the preferred halides for high load-carrying properties in the lubricating oil compositions.
Examples of specific complexes of this invention are listed below. In these examples the mole ratio indicated is the ratio respectively of the amine hydrocarbyl acid o-phosphate salt to the inorganic halide in the complex:
Primene JM-T-isoamyl isooctyl acid o-phosphate/zinc fluoride 13:'1
Primene 8l-R-isoamyl isooctyl acid o-phosphate/zinc fluoride 12:11
Tricaprylylamine-isoamyl isooctyl acid o-phosphate/zinc fluoride 13:1
Primene JM-T-isoamyl isooctyl acid o-phosphate/zinc chloride 13:1
Primene IM-T-isoa.'myl isooctyl acid o-phosphate/zinc chloride 14:1
Primene JM-T-rnono-dioctyl acid orthophosphate/zinc fluoride 19:1
Primene JM-T-isoamyl isooctyl acid orthophosphate/ zinc fluoride 4: 1
The following examples illustrate the preparation of the complex of the invention. The abbreviations TBN and TAN used in the example refer to total base member and total acid number respectively.
Example I 10,140 gm. 32.2 mol Primene JM-T (TBN-=l77) were charged to a stirred vessel. 6000 gm. of isoamyl octyl acid orthophosphate (TAN=301) were slowly added causing a temperature rise to about 40 C. 256 gm. (2.5 mol) of anhydrous zinc fluoride and 1200 ml. of water were added and the mixture heated to reflux for four hours. 2400 ml. of toluene were added and heated at reflux temperature to remove the water, following which the toluene was stripped off under vacuum using a nitrogen blanket. The Primene JM-T-isoamyl isooctyl acid o-phosphate/zinc fluoride complex (13.1 molar) analyzed as follows:
Analysis (percent).Found: Zn, 1.1; N, 2.5; P, 4.8; F, 0.6. Theory: Zn, 1.0; N, 3.0; P, 4.5; F, 0.5.
Example II 123 g. (0.54 mol) of dimethyl Primene 8l-R (TBN:246) and 100 g. of isoamylisooctyl acid orthophosphate (TAN=301) were charged to a vessel and reacted. Following the exothermic reaction, ml. of water and 4.6 g. (0.045 mol) zinc fluoride were added and the mixture heated to reflux for 3 hours. 100 ml. of toluene were added and the mixture again refluxed to remove the water (20 ml. recovered). The product was filtered through Filter-Cel and stripped of toluene to a pot temperature of 140 C. using a stream of nitrogen. The final product, weighing 225 g. in 99 percent yield, was a clear amber liquid. The molar ratio of alkyl ammonium phosphate to zinc fluoride was 12:1.
Example III 194 g. Primene JMT (TBN=177) (.615 mol) were charged to a flask and 100 g. isoamylisooctyl acid orthophosphate added with stirring. (TAN of acid=343). The reaction temperature rose from 27 C. to 70 C. Then 6.1 g. anhydrous zinc chloride (.045 mol) were added and the temperature of reaction raised to 100 C. Stirring was continued until no solid zinc chloride could be observed. The reaction mixture was cooled, diluted with 150 ml. benzene, filtered and the filtrate allowed to stand overnight on a steam plate to remove the benzene. The product was a clear amber viscous liquid. The molar ratio of alkyl ammonium phosphate to zinc chloride is 13.8:1.
Example IV 170 g. (0.54 mol) Primene JM-T (TBN=177) were charged to a flask and 100 g. isoamylisooctyl acid orthophosphate added with stirring. The temperature rose from 27 C. to 78 C. Then 13.9 g. anhydrous zinc fluoride (0.137 mol) and 60 ml. water were added. The mixture was heated to reflux for 4 hours. Then 150 ml. of toluene were added and 60 ml. water removed by refluxing the toluene-water azeotrope. The toluene solution was filtered and stripped at a maximum temperature of 150 C. with nitrogen. The product (284 g.) was a clear, amber, viscous liquid.
Analysis (percent).Found: Zn, 3.1; F, 1.7. Theory: Zn, 3.1; F, 1.8.
The molar ratio alkyl ammonium phosphate to zinc fluoride is 4:1.
Example V 195 g. (0.62 mol) Primene JM-T were charged to a flask and 100 g. mono-dioctyl acid orthophosphate (a commercial mixture of approximately equal amounts of mono octyl acid orthophosphate and dioctyl acid orthophosphate having a TAN of 348 were added slowly with stirring. The reaction temperature rose from 28 C. to 70 C. Then 4.6 g. of anhydrous zinc fluoride (0.045 mol) and 20 ml. water were added. The mixture was heated to reflux for 4 hours. Toluene, 100 ml., was added and 20 ml. of water removed as a toluene-water azeotrope. The toluene solution was filtered through paper and 1.2 g. dry powder recovered. The toluene was stripped to a pot temperature of 160 C. using a stream of nitrogen. The product (293 g.) was a viscous liquid molar ratio of alkyl ammonium phosphate to zinc fluoride calculated to be 18.7:1.
The lubricating composition of the invention was prepared by blending in a conventional way a minor amount of the oil-soluble, load-carrying complex described here ina-bove into a suitable lubricating oil base. Generally the complex is employed in an amount in the range of 0.05 to 10 percent by weight based on the Weight of the lubricating oil composition with the preferred amount being from about 0.1 to 3 weight percent.
The base lubricating oil can be either a mineral lubricating oil or a synthetic lubricating oil. The mineral lubricating oil can be predominantly paraflinic or naphthenic or it can be a mixture of both types of mineral oils. Generally, the mineral oil will be a refined oil of predominantly paraflinic nature having a viscosity in the range from 30 to Saybolt Universal seconds at 210 F.
Various types of synthetic lubricating oil bases can be employed for preparing the lubricants according to this invention. Aliphatic ester, polyalkylene oxides, silicones, esters of phosphoric and salicyclic acid and the highly fluorine-substituted hydrocarbons can be employed. Examples of the aliphatic esters include di-(Z-ethylhexyl) sebacate, the dialkyl azelates, dialkyl suberates, and the dialkyl adipates such as di-hexyl azelate, di-(2-ethylhexyl) azelate, di-3,5,5-trimethylhexyl gluterate, di (2 ethylhexyl) adipate, triamyl tricarballylate, etc. The polyalkylene oxides include polypropylene oxide, polyisopropylene oxide diether, polyisopropylene oxide diesters, etc. The silicones include methyl silicone, methylphenyl silicone, and the silicates include tetraisooctyl silicate. The highly fluorinated hydrocarbons include fluorinated oil, perfluorohydrocarbons, etc.
Other effective synthetic lubricating oils include the neopentyl glycol esters such as the neopentyl glyc'ol propionates, neopentyl glycol butyrates and neopentyl glycol caprylates and the trimethylol alkanes such as trimethylol ethane, trimethylol propene, trimethylol pentane, trimethylol heptane, and trimethylol dodecane and the like. Examples of the phosphate esters include tricresyl phosphate, trioctyl phosphate and tridecyl phosphate as well as mixed aryl and alkyl phosphates.
The load-carrying and rust-resistant properties of lubricating oil compositions of the invention making them particularly suitable as gas turbine lubricants were determined by preparing a mixture of the complex in a synthetic lubricating oil. In the tests below, the formulated oil contained 1 percent by weight of the additive complex. The load-carrying property was determined by the Ryder Gear Test (Federal Test Method 6508). In this test, the lubricant is employed to lubricate two spur gears in a Pratt and Whitney Gear and Lubricant Tester. The tester is operated at a gear speed of 10,000 r.p.m. using an oil inlet temperature of F. The load in the gear is increased in increments of 5 p.s.i. until 22.5 percent of the total tooth face area on the driving gear has been scuffed, the load applied in this run being considered the scutf load. The tooth load is then calculated in pounds per inch of tooth width.
The rust inhibiting properties of the lubricating oils were determined according to the well-known Humidity Cabinet procedure outlined in US. Military Specification MIL-L-21260 (corresponds to Federal Test Method Standard No, 791A, Method 5329).
The base oils employed in the preparation of gas turbine lubricating compositions were synthetic ester base oils. Base Oil A consisted of 96.6 percent by weight of a pentaerythritol ester plus the following additives: 1 percent phenothiazine, 2 percent dioctyldiphenylamine, 0.1 percent quinizarin and 0.3 percent methacrylate estermineral 'oil solution. The ester is made by esterifying technical grade pentaerythritol with a mixture of 38 percent valeric, 13 percent 2-methylpentanoic, 32 percent octanoic and 17 percent pelargonic acids. This ester has the following properties:
Viscosity, cs. at 210 F. 4.93 Viscosity, cs. at 100 F 25.6 Viscosity, cs. at 40 F 7023 Flash, F. 490
Base Oil B was a commercial synthetic ester consisting essentially of di-Z-ethylhexyl sebacate (Plexol 2014).
GAS TURBINE LUBRICANTS complex of Example 11.
(6) Base Oil B plus 1% by weight of the 4, 400+ complex of Example III.
(7) Base Oil B plus 0.25% by weight of the complex of Example IV.
(8) Base Oil B plus 0.5% by weight of the 4, 120
complex of Example IV.
(9) Base Oil B plus 1.0% by weight of the 4,400+
complex of Example V.
spots. 10-20% Rust.
The improvement in the wear properties of a lubricating composition containing the complex of the invention was demonstrated in a gear oil formulation using the 4-Ball Wear Test. This test is conducted in a device employing four steel balls, three of which are in contact with each 'other in one plane in a fixed, triangular position in a reservoir containing the oil sample. The fourth ball is above and in contact with the other three. In conducting the test, the upper ball is rotated while it is pressed against the lower three balls, the pressure being applied by weights and a lever arm. The diameter of the scars on the three lower balls are measured by means of a low power microscope. The average diameter measured in two directions on each of the three lower balls, is taken as a measure of the anti-wear characteristics of the lubricant.
The oil employed in this test was a mineral lubricating oil having an SUS viscosity at 210 F. 'of about 95. A commercial anti-wear agent of the sulfurized olefin type containing 46 percent sulfur was added to the mineral oil in the amount of 3 percent by weight of the composition and this composition was designated Base Oil C. The oil containing the complex of the invention also contained 1 percent by weight of an oil solution of a polymethacrylate resin. This polymethacrylate resin solution consisted of about 30 percent resin comprising 14 percent butyl, 12 percent hexyl, 42 percent lauryl and 32 percent stearyl methacrylate resins in the oil carrier. The methacrylate resin solution was added to the test oil solely to improve the viscosity of the oil and has no efiect 'on the extreme pressure or load-carrying properties of the lubricating oil composition.
ANTI-WEAR TEST late resin solution.
1 1 Hr.40KG-l,800 r.p.m., 200 F.
The anti-wear property of the base oil, which already possessed a high anti-wear property due to the presence of 3 weight percent of a commercial anti-wear additive, was surprisingly reduced more than half by the complex of the invention. This was a remarkable and unexpected improvement in the load-carrying properties of the mineral oil composition.
Obviously, other modifications and variations of the invention, as hereinbefore set forth, may be made without departing from the spirit and scope thereof, and therefore, only such limitations should be imposed as are indicated in the appended claims.
We claim:
1. A complex represented by the formula:
wherein R is an alkyl radical having from 6 to 24 carbon atoms, R is a hydrocarbyl radical having from 2 to 24 carbon atoms, R" is selected from the group consisting of hydrogen and a hydrocarbyl radical having from 4 to 24 carbon atoms, the sum of the carbon atoms in R and R being in the range from 10 to 30, X is a halogen, a is a number from 1 to 2 and b is a number from 1 to 20.
2. A complex represented by the formula:
in which R is a tertiary alkyl radical having from 10 to 24 carbon atoms, R is an alkyl radical having from 4 to 12 carbon atoms, R" is selected from the group consisting of hydrogen and an alkyl radical having from 4 to 12 carbon atoms, the sum of the carbon atoms in R and R" being in the range of 10 to 20 carbon atoms, X is a halogen, a is a number from 1 to 2 and b is a number from 4 to 20.
3. A complex according to claim 1 in which X is the fluoride ion.
4. A complex according to claim 1 in which X is the chloride ion.
5. The complex having the formula:
wherein R is a tertiary C1844 alkyl radical, R is the isoamyl radical and R is the isooctyl radical.
6. The complex having the formula:
wherein R is a tertiary C1144 alkyl radical, R is the isoamyl radical and R" is the isooctyl radical.
7. The complex having the formula:
wherein R is a tertiary C alkyl radical, R is the isoamyl radical and R is the isooctyl radical.
8. The complex having the formula:
in which R is a tertiary C1844 alkyl radical, R is an octyl radical and R is selected from the group consisting of hydrogen and an octyl radical.
9. The complex having the formula:
in which R is a tertiary C1844 alkyl radical, R is an octyl radical and R is selected from the group consisting of hydrogen and an octyl radical.
References Cited UNITED STATES PATENTS 3,168,497 2/ 1965 Twitchett 260-4293 XR 3,218,342 11/1965 Kerschner et a1. 260-429..9 3,305,330 2/1967 McCoy et a1. 260-4299 XR 3,351,647 11/1967 Butler et a1. 260-4299 FOREIGN PATENTS 937,882 9/1963 Great Britain.
TOBIAS E. LEVOW, Primary Examiner.
H. M. S. SNEED, Assistant Examiner.

Claims (1)

1. A COMPLEX REPRESENTED BY THE FORMULA:
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US3544609A (en) * 1966-11-10 1970-12-01 British Petroleum Co Zinc complexes
EP0385406A2 (en) * 1989-02-27 1990-09-05 Kao Corporation Alkali metal zinc monoalkylphosphate, particles thereof, process for preparing the same, and cosmetic containing the same

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GB937882A (en) * 1961-03-06 1963-09-25 Ici Ltd New basic organic complexes containing zinc
US3168497A (en) * 1961-03-06 1965-02-02 Ici Ltd Catalyst for polyurethane production using a tertiary amine and a zinc salt of a thio acid of phosphorus
US3218342A (en) * 1963-02-28 1965-11-16 Cities Service Oil Co Zinc chloride phospho thiourea compounds
US3305330A (en) * 1963-11-20 1967-02-21 Texaco Inc Amine-phosphorus-containing adducts and motor fuel containing same
US3351647A (en) * 1963-05-14 1967-11-07 Lubrizol Corp Nitrogen, phosphorus and metal containing composition

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US2863904A (en) * 1955-05-09 1958-12-09 Gulf Oil Corp Amine salts of di oxo-octyl orthophosphates
US3080222A (en) * 1960-02-23 1963-03-05 Gulf Research Development Co Oxo-octyl amine salts of dioxo-octyl phosphoric acid esters
US3256188A (en) * 1963-06-21 1966-06-14 Socony Mobil Oil Co Inc Oil-soluble metal halide complexes and improved lubricating oil compositions containing same

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Publication number Priority date Publication date Assignee Title
GB937882A (en) * 1961-03-06 1963-09-25 Ici Ltd New basic organic complexes containing zinc
US3168497A (en) * 1961-03-06 1965-02-02 Ici Ltd Catalyst for polyurethane production using a tertiary amine and a zinc salt of a thio acid of phosphorus
US3218342A (en) * 1963-02-28 1965-11-16 Cities Service Oil Co Zinc chloride phospho thiourea compounds
US3351647A (en) * 1963-05-14 1967-11-07 Lubrizol Corp Nitrogen, phosphorus and metal containing composition
US3305330A (en) * 1963-11-20 1967-02-21 Texaco Inc Amine-phosphorus-containing adducts and motor fuel containing same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544609A (en) * 1966-11-10 1970-12-01 British Petroleum Co Zinc complexes
EP0385406A2 (en) * 1989-02-27 1990-09-05 Kao Corporation Alkali metal zinc monoalkylphosphate, particles thereof, process for preparing the same, and cosmetic containing the same
EP0385406A3 (en) * 1989-02-27 1991-01-02 Kao Corporation Alkali metal zinc monoalkylphosphate, particles thereof, process for preparing the same, and cosmetic containing the same

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