At Least Two Of The Chalcogens Are Sulfur (e.g., Zinc Dihydrocarbyl Dithiophosphates, Etc.) Patents (Class 556/25)
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Publication number: 20120261621Abstract: An intermediate transfer member includes a mixture of a polyimide, a metal dialkyldithiophosphate, a polysiloxane, and an optional conductive filler component.Type: ApplicationFiled: April 18, 2011Publication date: October 18, 2012Applicant: XEROX CORPORATIONInventor: Jin WU
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Patent number: 8227389Abstract: A lubricant additive produced by various processes, including mixing an organophosphate and an organofluorine compound, reacting an organophosphate and an organofluorine compound, reacting a fluorinated organophosphate and an organofluorine compound (with or without molybendum disulfide), or reacting an organophosphate, a metal halide and an organofluorine compound (with or without molybendum disulfide), to produce a reaction mixture comprising the lubricant additive. Also, a lubricant produced by various processes, including mixing an organophosphate and an organofluorine compound, reacting an organophosphate and an organofluorine compound, reacting a fluorinated organophosphate and an organofluorine compound (with or without molybendum disulfide), or reacting an organophosphate, a metal halide and an organofluorine compound (with or without molybendum disulfide), and adding at least a portion of the reaction mixture to a lubricant base.Type: GrantFiled: October 11, 2007Date of Patent: July 24, 2012Inventors: Pranesh B. Aswath, Harold Shaub, Ramoun Mourhatch, Krupal Patel, David P. Owen, Ronald L. Elsenbaumer
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Patent number: 8216982Abstract: Disclosed is a low-phosphorous lubricant produced by a process comprising forming a lubricant additive by reacting metal halide and organophosphate together to form a reaction mixture, the metal halide participating as a reactant, and adding at least a portion of the reaction mixture to a lubricant base comprising from about 0.01 weight percent phosphorous to about 0.1 weight percent phosphorous.Type: GrantFiled: September 7, 2005Date of Patent: July 10, 2012Inventors: Kajal Parekh, Pranesh B. Aswath, Harold Shaub, Ronald L. Elsenbaumer
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Patent number: 8216986Abstract: A lubricant additive produced by the process comprising mixing a metal halide with an organophosphate, the metal halide participating as a reactant and reacting the metal halide and the organophosphate to produce a reaction mixture comprising the lubricant additive. Also disclosed is a lubricant produced by the process comprising forming a lubricant additive by reacting metal halide and organophosphate together to form a reaction mixture, the metal halide participating as a reactant, and adding at least a portion of the reaction mixture to a lubricant base.Type: GrantFiled: July 14, 2005Date of Patent: July 10, 2012Inventors: Kajal Parekh, Pranesh B. Aswath, Harold Shaub, Ronald L. Elsenbaumer
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Patent number: 8003576Abstract: This invention relates to improved lubrication in drilling and completion fluids used in subterrane drilling for oil and gas. The addition of zinc dialkyl dithiophosphate (ZDDP) acts as a lubricant, an enhancer to other lubricants and rate of penetration enhancer.Type: GrantFiled: December 16, 2009Date of Patent: August 23, 2011Assignee: The Lubrizol CorporationInventor: Michael J. McDonald
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Publication number: 20100152067Abstract: This invention relates to improved lubrication in drilling and completion fluids used in subterrain drilling for oil and gas. The addition of zinc dialkyl dithiophosphate (ZDDP) acts as a lubricant, an enhancer to other lubricants and rate of penetration enhancer.Type: ApplicationFiled: December 16, 2009Publication date: June 17, 2010Inventor: Michael J. McDonald
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Patent number: 6958409Abstract: A process for the manufacture of a low sediment overbased metal dithiophosphate composition is disclosed. The process uses delayed addition of a C1 to C5 mono-carboxylic acid promoter during the neutralization of a primary dialkyl dithiophosphoric acid. The process results in reducing crude sediment whereby the resulting overbased metal dithiophosphate may need not undergo additional filtration steps prior to its intended use.Type: GrantFiled: June 15, 2004Date of Patent: October 25, 2005Assignee: Chevron Oronite Company LLCInventor: William R. Ruhe, Jr.
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Patent number: 6536492Abstract: The present invention provides for a coupling system (white filler/diene elastomer) for a rubber composition based on diene elastomer reinforced with a white filler, formed by the association of a polysulphurized alkoxysilane, a zinc dithiophosphate and a guanidine derivative. The invention also provides a rubber composition usable for the manufacture of tires, comprising, as base constituents, one or more diene elastomer(s), a reinforcing white filler, a polysulphurized alkoxysilane coupling agent with which are associated a zinc dithiophosphate and a guanidine derivative. Also provided is a process for preparing such a rubber composition, and a tire or semi-finished product, in particular a tread for a tire, comprising a rubber composition according to the invention.Type: GrantFiled: January 22, 2001Date of Patent: March 25, 2003Assignee: Michelin Recherche et Technique S.A.Inventor: Didier Vasseur
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Patent number: 6310260Abstract: This invention relates to a process for separating one or more organophosphorus ligand degradation products, one or more reaction byproducts and one or more products from a continuously generated reaction product fluid comprising one or more unreacted reactants, a metal-organophosphorus ligand complex catalyst, optionally free organophosphorus ligand, said one or more organophosphorus ligand degradation products, said one or more reaction byproducts, said one or more products, one or more polar solvents and one or more nonpolar solvents by phase separation wherein (i) the selectivity of the polar phase for the organophosphorus ligand with respect to the one or more products is expressed by a partition coefficient ratio Ef1 which is a value greater than about 2.5, (ii) the selectivity of the polar phase for the organophosphorus ligand with respect to the one or more organophosphorus ligand degradation products is expressed by a partition coefficient ratio Ef2 which is a value greater than about 2.Type: GrantFiled: March 15, 2000Date of Patent: October 30, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: John Nicholas Argyropoulos, Jeffrey Scott Kanel, Michael Leo Tulchinsky, David James Miller, Donald Lee Morrison, Paul Foley, David Robert Bryant, Ailene Gardner Phillips, Brian Michael Roesch, John Robert Briggs, Max Min Lee, John Michael Maher
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Patent number: 6307108Abstract: This invention relates to a process for separating one or more organophosphorus ligand degradation products, one or more reaction byproducts and one or more formylester products from a reaction product fluid comprising one or more unreacted unsaturated ester reactants, a metal-organophoshorus ligand complex catalyst, optionally free organophosphorus ligand, said one or more organophosphorus ligand degradation products, said one or more reaction byproducts, said one or more products, a nonpolar solvent and a polar solvent by phase separation wherein (i) the selectivity of the nonpolar phase for the organophosphorus ligand with respect to the one or more products is expressed by a partition coefficient ratio Ef1 which is a value greater than about 2.5 (ii) the selectivity of the nonpolar phase for the organophosphorus ligand with respect to the one or more organophosphorus ligand degradation products is expressed by a partition coefficient ratio Ef2 which is a value greater than about 2.Type: GrantFiled: March 15, 2000Date of Patent: October 23, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: John Nicholas Argyropoulos, Jeffrey Scott Kanel, Michael Leo Tulchinsky, David James Miller, Donald Lee Morrison, Paul Foley, David Robert Bryant
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Patent number: 6307110Abstract: This invention relates to a process for separating one or more organophosphorus ligand degradation products, one or more reaction byproducts and one or more products from a continuously generated reaction product fluid comprising one or more unreacted reactants, a metal-organophosphorus ligand complex catalyst, optionally free organophosphorus ligand, said one or more organophosphorus ligand degradation products, said one or more reaction byproducts, said one or more products, one or more nonpolar solvents and one or more polar solvents by phase separation wherein (i) the selectivity of the nonpolar phase for the organophosphorus ligand with respect to the one or more products is expressed by a partition coefficient ratio Ef1which is a value greater than about 2.5, (ii) the selectivity of the nonpolar phase for the organophosphorus ligand with respect to the one or more organophosphorus ligand degradation products is expressed by a partition coefficient ratio Ef2 which is a value greater than about 2.Type: GrantFiled: March 15, 2000Date of Patent: October 23, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: John Nicholas Argyropoulos, Jeffrey Scott Kanel, Michael Leo Tulchinsky, David James Miller, Donald Lee Morrison, Paul Foley, David Robert Bryant, Ailene Gardner Phillips, Brian Michael Roesch, John Robert Briggs, Max Min Lee, John Michael Maher
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Patent number: 6307109Abstract: This invention relates to a process for separating one or more products from a reaction product fluid comprising a metal-organophosphorus ligand complex catalyst, optionally free organophosphorus ligand, said one or more products, one or more nonpolar reaction solvents and one or more polar reaction solvents, in which said reaction product fluid exhibits phase behavior depicted by FIG. 1, wherein said process comprises (1) supplying said reaction product fluid from a reaction zone to a separation zone, (2) controlling concentration of said one or more nonpolar reaction solvents and said one or more polar reaction solvents, temperature and pressure in said separation zone sufficient to obtain by phase separation two immiscible liquid phases depicted by regions 2, 4 and 6 of FIG. 1 comprising a polar phase and a nonpolar phase and to prevent or minimize formation of three immiscible liquid phases depicted by region 5 of FIG. 1 and one homogeneous liquid phase depicted by regions 1, 3 and 7 of FIG.Type: GrantFiled: March 15, 2000Date of Patent: October 23, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jeffrey Scott Kanel, David Robert Bryant, Brian Michael Roesch, Ailene Gardner Phillips
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Patent number: 6303830Abstract: This invention relates to a process for separating one or more organophosphorus ligand degradation products, one or more reaction byproducts and one or more formylester products from a reaction product fluid comprising one or more unreacted unsaturated ester reactants, a metal-organophosphorus ligand complex catalyst, optionally free organophosphorus ligand, said one or more organophosphorus ligand degradation products, said one or more reaction byproducts, said one or more products, a polar solvent and a nonpolar solvent by phase separation wherein(i) the selectivity of the polar phase for the organophosphorus ligand with respect to the one or more products is expressed by a partition coefficient ratio Ef1 which is a value greater than about 2.5, (ii) the selectivity of the polar phase for the organophosphorus ligand with respect to the one or more organophosphorus ligand degradation products is expressed by a partition coefficient ratio Ef2 which is a value greater than about 2.Type: GrantFiled: March 15, 2000Date of Patent: October 16, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: John Nicholas Argyropoulos, Jeffrey Scott Kanel, Michael Leo Tulchinsky, David James Miller, Donald Lee Morrison, Paul Foley, David Robert Bryant
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Patent number: 6303829Abstract: This invention relates to a process for separating one or more products from a reaction product fluid comprising a metal-organophosphorus ligand complex catalyst, optionally free organophosphorus ligand, said one or more products, one or more nonpolar reaction solvents and one or more polar reaction solvents, wherein said process comprises (1) subjecting said reaction product fluid to fractional countercurrent extraction with at least two immiscible extraction solvents, said at least two immiscible extraction solvents comprising at least one nonpolar extraction solvent and at least one polar extraction solvent, to obtain a nonpolar phase comprising said metal-organophosphorus ligand complex catalyst, said optionally free organophosphorus ligand, said one or more nonpolar reaction solvents and said at least one nonpolar extraction solvent and a polar phase comprising said one or more products, said one or more polar reaction solvents and said at least one polar extraction solvent, and (2) recovering said polarType: GrantFiled: March 15, 2000Date of Patent: October 16, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jeffrey Scott Kanel, John Nicholas Argyropoulos, Ailene Gardner Phillips, Brian Michael Roesch, John Robert Briggs, Max Min Lee, John Michael Maher, David Robert Bryant
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Patent number: 6294700Abstract: This invention relates to a process for separating one or more products from a reaction product fluid comprising a metal-organophosphorus ligand complex catalyst, optionally free organophosphorus ligand, said one or more products, one or more polar reaction solvents and one or more nonpolar reaction solvents, wherein said process comprises (1) subjecting said reaction product fluid to fractional countercurrent extraction with at least two immiscible extraction solvents, said at least two immiscible extraction solvents comprising at least one polar extraction solvent and at least one nonpolar extraction solvent, to obtain a polar phase comprising said metal-organophosphorus ligand complex catalyst, said optionally free organophosphorus ligand, said one or more polar reaction solvents and said at least one polar extraction solvent and a nonpolar phase comprising said one or more products, said one or more nonpolar reaction solvents and said at least one nonpolar extraction solvent, and (2) recovering said nonpoType: GrantFiled: March 15, 2000Date of Patent: September 25, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jeffrey Scott Kanel, John Nicholas Argyropoulos, Ailene Gardner Phillips, Brian Michael Roesch, John Robert Briggs, Max Min Lee, John Michael Maher, David Robert Bryant
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Patent number: 6110878Abstract: Oil-soluble or oil-dispersible trinuclear molybdenum-sulfur compounds are made by reacting less than three, such as 1.5 to 2.5, preferably two to 2.1, molar equivalents of a disulfide with one molar equivalent of a compound containing the [Mo.sub.3 S.sub.13 ].sup.2- ion. The trinuclear compounds include S-containing ligands that are derived from the disulfide reactant via cleavage of the disulfide bond; the ligands are bound to the core via the S atoms.Type: GrantFiled: December 11, 1998Date of Patent: August 29, 2000Assignee: Exxon Chemical Patents IncInventors: Jonathan M. McConnachie, Edward Ira Stiefel, Ian Alexander Weston Bell, Velautha-Cumaran Arunasalam
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Patent number: 5939364Abstract: Multifunctional molybdenum compounds, which are the reactive product of molybdenum dithiocarbamates and (non-metal containing) dihydrocarbyl dithiophosphoric acids, and the oils that contain them are new compositions which are useful as lubricant additives. They impart to the lubricant formulations to which they are added low friction and excellent friction retention properties.Type: GrantFiled: December 12, 1997Date of Patent: August 17, 1999Assignee: Exxon Research & Engineering Co.Inventors: Richard Samuel Polizzotti, Elisavet P. Vrahopoulou, Stephen D. Cameron, Charles Frederick Pictroski
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Patent number: 5384054Abstract: This invention relates to a process for the production of overbased metal salts of hydrocarbyl dithiophosphoric acid comprising:a) treating hydrocarbyl dithiophosphoric acid with an effective amount of phosphorus sulfide at a temperature within the range of from about 50.degree. to about 200.degree. C.; andb) neutralizing the treated hydrocarbyl dithiophosphoric acid with an amount of metal oxide;whereby the effective amount of phosphorus sulfide is sufficient to form a basic metal salt of the dithiophosphoric acid having a base metal to phosphorus ratio within the range of from about 1.15:1 to about 1.3:1.Type: GrantFiled: January 18, 1994Date of Patent: January 24, 1995Assignee: Ethyl Petrolium Additives, Inc.Inventor: Abbas Kadkhodayan
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Patent number: 5380448Abstract: This invention relates to a process for preparing an overbased metal salt of hydrocarbyl dithiophosphoric acid comprising neutralizing hydrocarbyl dithiophosphoric acid with an amount of metal oxide sufficient to form said overbased metal salt of hydrocarbyl dithiophosphoric acid, which metal oxide has a surface area of no less than about 4 m.sup.2 per gram up to about 12 m.sup.2 per gram and whereby the overbased metal salt of hydrocarbyl dithiophosphoric acid thus formed has a base metal to phosphorus weight ratio within the range of greater than about 1.2:1 up to about 1.3:1.Type: GrantFiled: February 7, 1994Date of Patent: January 10, 1995Assignee: Ethyl Petrolium Additives, Inc.Inventors: Abbas Kadkhodayan, Dale G. Pillsbury, Paul G. Griffin
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Patent number: 5306436Abstract: Useful as additive for lubricating oils are novel phosphosulphur compounds in accordance with the general formula (I):(((R.sup.1 --S.sub.x --O.sub.y --A--).sub.r B.sub.v).sub.p P(X)--Y.sub.t --).sub.q Z.sub.min which e.g. R.sup.1 represents an alkyl or alkenyl group, A represents the group --(CH.sub.2).sub.n --O--, B represents the group --P(S)--S--CH.sub.2 --(CH.sub.3)--O--, X represents an oxygen atom or a sulphur atom, Y represents an oxygen atom, a sulphur atom or an oxygen or sulphur-containing hydrocarbon chain, Z represents a hydrogen, chlorine or sulphur atom, a polysulphide chain, a metal or an alkyl or alkenyl group, x=1,2 or 3, y=0, 1 or 2, v is 0 or 1, r is 1 (if v=0) or r=2 (if v=1), p=2 or 3, t=0 or 1, m=0,1 or 2, q=the valency of Z if Z is a metal or q=1 or 2 and n is an integer from 1 to 30.Type: GrantFiled: August 26, 1991Date of Patent: April 26, 1994Assignee: Institut Francais du PetroleInventors: Maurice Born, Ourida Aberkane, Jean-Luc Mieloszynski, Daniel Paquer, Guy Parc
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Patent number: 5258130Abstract: Reaction products of an organotin oxide, such as dibutyltin oxide, a diorgano dithiophosphoric acid such as di-(2-ethylhexyl)dithiophosphoric acid and an alkenyl or polyalkenyl succinic anhydride, such as dodecenyl succinic anhydride, are effective multifunctional antioxidant and antiwear additives in lubricants, greases and fuels.Type: GrantFiled: October 30, 1992Date of Patent: November 2, 1993Assignee: Mobil Oil CorporationInventors: Andrew G. Horodysky, Shih-Ying Hsu
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Patent number: 5147572Abstract: The present invention relates to improved flotation composition comprising a mixture of (A) at least one metal salt of a phosphorus acid represented by the Formula: ##STR1## wherein each R.sub.1 is independently a hydrocarbyl, hydrocarbyloxy of hydrocarbylthio group having from 1 to about 18 carbon atoms, each X is independently oxygen or sulfur, and the lowest oxidation state of the metal is plus two, and (B) at least one dithiocarbamate represented by the formula: ##STR2## wherein each R.sub.2 is independently hydrogen, a hydrocarbyl group having from 1 to about 18 carbon atoms, or R.sub.2 taken together with R.sub.3 and the nitrogen atom form a five, six or seven member heterocyclic group; each R.sub.3 is independently a hydrocarbyl group having from 1 to about 18 carbon atoms, or R.sub.3 taken together with R.sub.2 and the nitrogen atom form a five, six or seven member heterocyclic group; and R.sub.4 is a hydrocarbylene group having from 1 to about 10 carbon atoms.Type: GrantFiled: October 11, 1991Date of Patent: September 15, 1992Assignee: The Lubrizol CorporationInventor: James H. Bush
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Patent number: 5132031Abstract: Novel products of the copper dihydrocarbyl dithiophosphyl dithiophosphate type, their preparation and their use are described.These products can be represented by the general formula: ##STR1## in which R particularly represents a substantially hydrocarbon monovalent radical with 1 to 30 carbon atoms, X and Y each represent a hydrogen atom or a substantially hydrocarbon monovalent radical with 1 to 30 carbon atoms, M represents copper in one of its two ordinary degrees of oxidation and n the degree of oxidation. The products according to the invention are usable as additives for lubricants in which they provide an effective protection against wear.Type: GrantFiled: August 21, 1990Date of Patent: July 21, 1992Assignee: Institut Francais du PetroleInventors: Maurice Born, Jean-Claude Hipeaux, Valerie Maran, Armand Rossi, Michel Thebault
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Patent number: 4935408Abstract: A compound of the formula: ##STR1## in which R.sup.1 represents alkyl, cycloalkyl or aralkyl, R* represents fluorophenyl or trifluoromethylphenyl when R.sup.1 is alkyl; R* represents dichlorophenyl, neopentyl, trimethylsilylmethyl, dimethylphenylsilylmethyl or a group of the formula: ##STR2## wherein R.sup.2 represents halogen, trifluoromethyl, lower alkyl or lower alkoxy when R.sup.1 is cycloalkyl; or R* represents 2-thienyl, 3-thienyl, neopentyl, trimethylsilylmethyl, dimethylphenylsilylmethyl or a group of the formula: ##STR3## wherein R.sup.3, R.sup.4 and R.sup.5 independently represent halogen, trifluoromethyl, lower alkyl or lower alkoxy when R.sup.1 is aralkyl, m represents 1 or 2, and X represents halogen, imidazolyl, triazolyl, phenylthio or a radical selected from the group consisting of: ##STR4## wherein R.sup.6 represents alkyl, R.sup.7 and R.sup.8 independently represent lower alkyl and R.sup.9 and R.sup.Type: GrantFiled: May 6, 1988Date of Patent: June 19, 1990Assignees: Shionogi & Co., Ltd., Nitto Kasei Co., Ltd.Inventors: Hideyuki Imazaki, Masazumi Fujikawa, Katsuaki Oba, Fusaharu Kumayama, Toshio Takahashi
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Patent number: 4882446Abstract: The invention relates to compounds of the metal dihydrocarbyl-dithiophosphyl-dithiophosphate type, their manufacture and use. These compounds can be represented by the general formula: ##STR1## wherein R is a monovalent substantially hydrocarbon-containing radical of 1 to 30 carbon atoms, X and Y are each a hydrogen atom or a monovalent substantially hydrocarbon-containing radical of 1 to 30 carbon atoms, M is a metal selected from zinc, cadmium, lead and antimony or an oxygen--and/or sulfur--containing molybdenum complex, and n is the valence of said metal M. The compounds according to the invention can be used as additives for lubricants wherein they act as a very efficient wear preventive.Type: GrantFiled: March 3, 1988Date of Patent: November 21, 1989Assignee: Institut Francais Du PetroleInventors: Maurice Born, Jacques Lallement, Pierre Marchand, Guy Parc, Nicole Thevenin
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Patent number: 4789492Abstract: Disclosed is a novel sulfidoxymolybdenum dialkylphosphorodithioate represented by the following general formula (I): ##STR1## wherein R stands for a secondary alkyl group having 4 to 30 carbon atoms and four R's may be the same or different, and X stands for O or S and four X's may be the same or different.This compound is very valuable as the lubricant additive.Type: GrantFiled: March 21, 1986Date of Patent: December 6, 1988Assignee: Asahi Denka Kogyo K.K.Inventors: Shigeru Katsumata, Takuro Handa, Tamiji Kamakura, Noriyoshi Tanaka, Hidekatsu Katoh, Kimiyoshi Namiwa, Yoshikazu Shoji
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Patent number: 4778906Abstract: A process for preparing a zinc dialkyldithiophosphate which comprises reacting phosphorus pentasulfide with an aliphatic monohydric alcohol in the presence of a hydrocarbyl polyol followed by a reaction with a basic zinc salt to produce a stabilized zinc dialkyldithiophosphate is provided.Type: GrantFiled: August 28, 1986Date of Patent: October 18, 1988Assignee: Texaco Inc.Inventors: Doris Love, Carmen M. Cusano, Joseph B. Biasotti, Harold S. Magaha
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Patent number: 4774235Abstract: A compound of the formula: ##STR1## in which R.sup.1 represents alkyl, cycloalkyl or aralkyl, R* represents fluorophenyl or trifluoromethylphenyl when R.sup.1 is alkyl; R* represents dichlorophenyl, neopentyl, trimethylsilylmethyl, dimethylphenylsilylmethyl or a group of the formula: ##STR2## wherein R.sup.2 represents halogen, trifluoromethyl, lower alkyl or lower alkoxy when R.sup.1 is cycloalkyl; or R* represents 2-thienyl, 3-thienyl, neopentyl, trimethylsilylmethyl, imethylphenylsilylmethyl or a group of the formula: ##STR3## wherein R.sup.3, R.sup.4 and R.sup.5 independently represent hydrogen, halogen, trifluoromethyl, lower alkyl or lower alkoxy when R.sup.1 is aralkyl, m represents 1 or 2, and X represents halogen, imidazolyl, triazolyl, phenylthio or a radical selected from the group consisting of: ##STR4## wherein R.sup.6 represents alkyl, R.sup.7 and R.sup.8 independently represent lower alkyl and R.sup.9 and R.sup.Type: GrantFiled: August 21, 1986Date of Patent: September 27, 1988Assignees: Shionogi & Co., Ltd., Nitto Kasei Co., Ltd.Inventors: Hideyuki Imazaki, Masazumi Fujikawa, Katsuaki Oba, Fusaharu Kumayama, Toshio Takahashi
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Patent number: 4766228Abstract: The invention relates to compounds of the metal dihydrocarbyl-dithiophosphyl-dithiophosphate type, their manufacture and use. These compounds can be represented by the general formula: ##STR1## wherein R is a monovalent substantially hydrocarbon-containing radical of 1 to 30 carbon atoms, X and Y are each a hydrogen atom or a monovalent substantially hydrocarbon-containing radical of 1 to 30 carbon atoms, M is a metal selected from zinc, cadmium, lead and antimony or an oxygen- and/or sulfur-containing molybdenum complex, and n is the valence of said metal M. The compounds according to the invention can be used as additives for lubricants wherein they act as a very efficient wear preventive.Type: GrantFiled: September 4, 1986Date of Patent: August 23, 1988Assignee: Institut Francais du PetroleInventors: Maurice Born, Jacques Lallement, Pierre Marchand, Guy Parc, Nicole Thevenin
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Patent number: 4729848Abstract: Metal salts of alkyl catechol esters of dithiophosphoric acid suitable as additives in oil compositions are disclosed. Oil compositions containing the salts of such esters show improved extreme pressure/anti-wear and anti-oxidant properties.Type: GrantFiled: September 8, 1986Date of Patent: March 8, 1988Assignee: Chevron Research CompanyInventors: Elaine S. Yamaguchi, Thomas V. Liston
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Patent number: 4681958Abstract: This invention relates to neutral complexes of dithioacid vanadium sulfide dimer and to a method of producing the complexes. The 1,1-dithioacid may be a dithiocarbamate, xanthate, dithiophosphate, dithiophosphinate or other similar ligand. The structure is generally of the form ##STR1## where L is a 1,1-dithioacid. The preferred dithioacid is dithiocarbamate. The compositions are suitable for producing hydrotreating catalysts or as a lubricant additive.Type: GrantFiled: October 15, 1985Date of Patent: July 21, 1987Assignee: Exxon Research and Engineering CompanyInventors: Thomas R. Halbert, Edward I. Stiefel
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Patent number: 4582920Abstract: A copper (1) dihydrocarbyl phosphordithioate is made by a method comprising reacting a bis(dihydrocarbyl phosphorothionyl) disulfide with activated copper metal.Type: GrantFiled: August 21, 1984Date of Patent: April 15, 1986Assignee: Mobil Oil CorporationInventor: Robert F. Bridger
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Patent number: 4577037Abstract: Precipitation of a mixed zinc dialkyldithiophosphate prepared from a mixture of about 50-80 mole percent of a lower alcohol plus 50-20 mole percent of a higher alcohol may be prevented by the addition to the reaction system used to prepare the mixed zinc composition of from about 0.5 to 2.0 percent by weight of an ammonium salt of an acid.Type: GrantFiled: February 10, 1984Date of Patent: March 18, 1986Assignee: Chevron ResearchInventor: Thomas F. Buckley
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Patent number: 4559152Abstract: Molybdenum salts of organophosphorus acids prepared in the presence of polar solvents are found to have a higher conversion of molybdenum than if otherwise produced. The salts of the invention are useful as lubricating oil additives to reduce friction and corrosion and to decrease fuel consumption in internal combustion engines.Type: GrantFiled: June 17, 1982Date of Patent: December 17, 1985Assignee: Texaco Inc.Inventor: Raymond C. Schlicht
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Patent number: 4534872Abstract: Metal salts of partially borated, partially phosphosulfurized pentaerythritol and trimethyolpropane based hydroxyl-containing esters are effective as multifunctional additives, reducing friction, inhibiting oxidation and reducing bearing corrosion when incorporated into a variety of lubricating media.Type: GrantFiled: August 2, 1983Date of Patent: August 13, 1985Assignee: Mobil Oil CorporationInventors: Andrew G. Horodysky, Joan M. Kaminski