Patents Examined by Cynthia A. Prezlock
  • Patent number: 4645610
    Abstract: A method for the preparation of olefin polysulfides that can be used in particular as extreme pressure additives for lubricants is described. This method comprises: (1) reacting sulfur monochloride or dichloride with at least one mono-olefin containing 2 to 5 carbon atoms (in general isobutene) resulting in the formation of an adduct; (2) bringing into contact said adduct, conjointly with a hydrocarbyl halide, with a sulfur compound (for example, alkaline sulfides, hydrosulfides or polysulfides) and, in most cases, elemental sulfur, in an aqueous or aqueous-alcoholic medium; (3) heating the mixture and, after it has settled into two phases, separating the organic phase containing the olefin polysulfide; and if necessary (4) treating the product obtained with a base.The olefin polysulfides obtained contain a high proportion of sulfur, have a satisfactory viscosity and are sufficiently soluble in mineral oils as well as synthetic oils to be used as extreme pressure additives in the formulation of gear oils.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: February 24, 1987
    Assignee: Institut Francais du Petrole
    Inventors: Maurice Born, Guy Parc, Lucienne Briquet, Daniel Paquer
  • Patent number: 4639324
    Abstract: Lubricating oils having improved antioxidant and anti-wear properties are obtained by adding a minor amount of a reaction product made by reacting at least one aliphatic olefinically unsaturated hydrocarbon containing from about 8 to 36 carbon atoms (preferably an .alpha.-olefin) concurrently with sulfur and at least one fatty acid ester (preferably an oil such as cottonseed oil) to obtain a reaction intermediate and reacting this intermediate with additional sulfur and a dimer of cyclopentadiene or lower C.sub.1-4 alkyl substituted cyclopentadiene dimers, such as methylcyclopentadiene dimer.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: January 27, 1987
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventor: William Y. Lam
  • Patent number: 4639323
    Abstract: A water soluble metalworking fluid is the subject of this invention. The fluid is utilized at a concentration of about 3 weight percent in aqueous solution. The active ingredients are comprised of disodium phosphate heptahydrate, sodium molybdate, sodium vanadate, 1,2,3-benzotriazole, a fluorinated hydrocarbon surfactant, a biocide, and a foam suppressant, all in aqueous solution. The resulting fluid is water soluble, transparent, film free, non-putrefying, non-toxic, a non-irritant, non-corrosive, non-polluting, and has very low BOD and COD values.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: January 27, 1987
    Assignee: Nihon Kohsakuyu Company, Ltd.
    Inventor: Tsong K. Liao
  • Patent number: 4634802
    Abstract: An improved method for dehydrogenating dehydrogenatable hydrocarbons by contacting a gas comprising said hydrocarbons and an oxidative dehydrogenation agent at dehydrogenation conditions, the improvement which comprises contacting the hydrocarbon with an oxidative dehydrogenation agent containing a promoting amount of alkali metal and/or compounds thereof and associated with a support selected from the group consisting of alkaline earth metals and compounds thereof.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: January 6, 1987
    Assignee: Atlantic Richfield Company
    Inventors: C. Andrew Jones, John A. Sofranko
  • Patent number: 4634800
    Abstract: An improved method for converting methane to higher hydrocarbon products by contacting a hydrocarbon gas comprising methane, an oxygen-containing gas and a reducible metal oxide under conditions effective to produce higher hydrocarbon products and water, the improvement which comprises conducting the contacting in the presence of at least one promoter selected from the group consisting of halogens and compounds thereof.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: January 6, 1987
    Assignee: Atlantic Richfield Company
    Inventors: Howard P. Withers, Jr., C. Andrew Jones, John J. Leonard, John A. Sofranko
  • Patent number: 4634545
    Abstract: A method of lubricating a railroad track comprising the steps of dispersing together a mixture of at least 30% by weight of powdered graphite having an average particle size of not larger than 50 microns, and an oil based carrier to yield a viscosity of approximately 25,000 centipoise at standard temperature and pressure; applying said dispersion to a railroad track and pressure fixing to form a film like coating thereon.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: January 6, 1987
    Assignee: Superior Graphite Co.
    Inventors: Peter L. Zaleski, Stanley H. Gratt
  • Patent number: 4632771
    Abstract: This invention relates to normally liquid lubricating oil additives which provide both anti-oxidant and friction-modifying properties when added to lubricating oil. In particular, this invention relates to C.sub.14 to C.sub.18 alkyl catechol lubricating oil additives which are normally liquid at typical storage temperatures.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: December 30, 1986
    Assignee: Chevron Research Company
    Inventors: Thomas V. Liston, Warren Lowe, Vernon R. Small
  • Patent number: 4631139
    Abstract: The invention is a corrosion inhibiting water-based machining fluid comprising a synergistic combination of a 2-heptyl-1-ethoxypriopionic acid imidazoline, sodium salt; free amine and a mixture of an amine salt of C.sub.8 to C.sub.14 dicarboxylic acids.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: December 23, 1986
    Assignee: Texaco Inc.
    Inventors: James R. Burton, David J. Kushner
  • Patent number: 4627929
    Abstract: Stabilized lubricants based on polyethers containing diphenylamine derivatives of the formula ##STR1## in which R.sup.1 denotes hydrogen, a straight-chain or branched C.sub.4 to C.sub.12 -alkyl group, a straight-chain or branched C.sub.4 to C.sub.12 -alkylene group, a C.sub.7 to C.sub.12 -aralkyl group, a C.sub.7 to C.sub.12 -aralkylene group, a C.sub.5 to C.sub.12 -cycloalkyl group which is optionally substituted by C.sub.1 to C.sub.6 -alkyl, -alkenyl, -cycloalkyl or -cycloalkenyl, or a C.sub.5 to C.sub.12 -cycloalkenyl group which is optinally substituted by C.sub.1 to C.sub.6 -alkyl, -alkenyl or -cycloalkenyl, but does not denote a hydrocarbon group derived from a terpene, in the ortho- or para-position relative to the particular N atom, n represents an integer from 1 to 29 and Y represents a bifunctional radical --A-- and optionally additionally a bifunctional radical --B--, in each case in the ortho- or para-position relative to the N atoms, wherein --A-- denotes a straight-chain or branched C.sub.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: December 9, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Siegfried Kussi, Gunther Boehmke
  • Patent number: 4627928
    Abstract: This invention relates to basic magnesium salts of substituted aromatic hydroxy carboxylic acids or the derivatives thereof and to a process for preparing such salts. These salts can be used either along or in combination, as additives, in a variety of lubricating oils and fuels including gasoline, diesel fuels, etc.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: December 9, 1986
    Assignee: The Lubrizol Corporation
    Inventor: Jack L. Karn
  • Patent number: 4626367
    Abstract: A water-soluble metal-working lubricant composition comprising as essential components thereof(a) one or more polyetherpolyols having molecular weights of 200 to 100,000 and obtained by adding alkylene oxides to either one or more of compounds selected from(1) polyalkylenepolyamines and derivatives thereof,(2) alkyl- and alkylaryl-amines and derivatives thereof and(3) carboxylic acid amides and derivatives thereof; and(b) one or more compounds selected from phosphoric acid compounds and boric acid.Incorporation of a specific polyetherpolyol compound together with phosphoric acid compound or boric acid serves as alternative to conventional liquid oil-base lubricant with mitigating drawbacks such as poor stability of emulsions, fouling of surfaces, difficulty in waste water, etc., which are inherent in conventional lubricants.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: December 2, 1986
    Assignees: Kao Corporation, Nippon Kokan Kabushiki Kaisha
    Inventors: Hiroshi Kuwamoto, Hiroyuki Nagamori, Takashi Mukai, Shuichi Iwado
  • Patent number: 4626368
    Abstract: Benzotriazole or a substituted benzotriazole when reacted with alkyl aldehydes and dialkylhydrogen phosphites provide products which improve the load-carrying, antiwear properties of lubricant oils and greases.
    Type: Grant
    Filed: December 10, 1985
    Date of Patent: December 2, 1986
    Assignee: Mobil Oil Corporation
    Inventor: Angeline B. Cardis
  • Patent number: 4624776
    Abstract: A major portion, preferably a substantial portion, of the coke precursors may be removed from atmospheric and vacuum resids having a Conradson carbon residue of at least about 10 wt. % by selectively removing the components of said feedstock which have an overall Hildebrand solubility parameter greater than 9.0 and a complexing solubility parameter greater than 1.3, such that there results a coke precursor rich fraction containing components having the requisite solubility parameters and a coke precursor depleted fraction. Each fraction may then be processed separately. Segregation of coke precursors by removing the components having the requisite solubility parameters also results in an enhanced yield of useable liquid hydrocarbons relative to that obtained using conventional separation processes.
    Type: Grant
    Filed: September 6, 1985
    Date of Patent: November 25, 1986
    Assignee: Exxon Research and Engineering Company
    Inventors: Robert B. Long, Jack Griffel
  • Patent number: 4621165
    Abstract: A process for removing from a mixture of isoprene trimers compounds of the formula ##STR1## by reacting a mixture of cyclic and linear trimers with a compound having an activated carbon atom, of the formula:X--CH.sub.2 --Yin which one of X or Y is an electron-withdrawing group and the other is an electron-withdrawing or electron-donating group, in the presence of a catalyst consisting of a water-soluble phosphine and a rhodium compound, the reaction being carried out in water or in a water-alcohol medium, and separating the cyclic trimers and linear trimers containing the chain ##STR2## from the mixture of products of the formulae: ##STR3## which can be used, in particular, in the synthesis of vitamin E.
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: November 4, 1986
    Assignee: Rhone-Poulenc Sante
    Inventor: Didier Morel
  • Patent number: 4620922
    Abstract: There are disclosed a catalyst and a process for the hydrodenitrogenation of a hydrocarbon stream containing a substantial amount of nitrogen compounds, such as whole shale oil.The catalyst comprises a hydrogenation component comprising chromium, molybdenum, and at least one Group VIII metal deposed upon a porous alumina-silica support, the silica of said support being present in an amount within the range of about 10 wt % to about 50 wt %, based upon the weight of said support.The process comprises contacting the hydrocarbon stream under hydrodenitrogenation conditions and in the presence of hydrogen with the aforesaid catalyst.
    Type: Grant
    Filed: January 14, 1986
    Date of Patent: November 4, 1986
    Assignee: Standard Oil Company (Indiana)
    Inventors: A. Martin Tait, Thomas D. Nevitt, Albert L. Hensley, Jr.
  • Patent number: 4620057
    Abstract: A method for the oxidative conversion of a feed material comprising methane, such as natural gas, to higher hydrocarbons, particularly ethylene and ethane and desirably ethylene, in which feed is contacted with a solid contact material comprising cobalt; at least one metal selected from the group consisting of zirconium, zinc, niobium, indium, lead and bismuth, preferably, zirconium; phosphorous; at least one Group IA metal; and oxygen under oxidative conversion conditions sufficient to convert the methane to the higher hydrocarbons. Substantial improvement in the conversion of methane and selectivity to ethylene and ethane is obtained by adding chlorine to the contact material. The further addition of sulfur to the contact material also improves the conversion and selectivity and permits the method to be carried out in an essentially continuous manner in the presence of a free oxygen containing gas.
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: October 28, 1986
    Assignee: Phillips Petroleum Company
    Inventors: James B. Kimble, John H. Kolts
  • Patent number: 4618437
    Abstract: Boronated internal imidazoline acid phosphates provide effective friction reducing characteristics for lubricant compositions when incorporated therein.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: October 21, 1986
    Assignee: Mobil Oil Company
    Inventor: Andrew G. Horodysky
  • Patent number: 4618436
    Abstract: Borated internal oxazoline acid phosphates provide effective antiwear and friction reducing characteristics for lubricant compositions when incorporated therein.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: October 21, 1986
    Assignee: Mobil Oil Corporation
    Inventor: Andrew G. Horodysky
  • Patent number: 4616098
    Abstract: Olefins are prepared by converting methanol and/or dimethyl ether in the presence of a zeolite catalyst at elevated temperatures by a process wherein the catalyst used is a borosilicate zeolite which has been molded together with an amorphous binder containing aluminum oxide and silicon dioxide. The advantage of using the borosilicate catalyst is that the yield of C.sub.2 -C.sub.4 -olefins is improved at the expense of formation of higher hydrocarbons.
    Type: Grant
    Filed: September 12, 1984
    Date of Patent: October 7, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Hoelderich, Walter Himmel, Wolf D. Mross, Matthias Schwarzmann
  • Patent number: 4615827
    Abstract: Lubricating oils containing borated 1,2-alkane diols have been found to reduce brake noise for oil-immersed disc brakes.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: October 7, 1986
    Assignee: Chevron Research Company
    Inventor: Vernon R. Small, Jr.