Patents Examined by Valerie Fee
  • Bleaching agent
    Patent number: 5336433
    Abstract: The present invention relates to particles having a core comprising a peroxy compound and a hydrophobic coating comprising:(a) a hydrophobic substance selected from saturated fats, waxes or phosphatides;(b) a surfactant dissolved in the hydrophobic substance;(c) water swellable grains;the hydrophobic substance and the surfactant being substantially inert in respect of the peroxy compound.The invention also relates to preparation and use of the particles. Further, the invention relates to a composition containing such coated particles.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: August 9, 1994
    Assignee: Eka Nobel AB
    Inventors: Hans Lagnemo, Robert E. Sparks, Irwin C. Jacobs
  • Process for the preparation of nitrobenzene
    Patent number: 5334781
    Abstract: The invention concerns a process for the preparation of nitrobenzene from benzene and nitric acid, wherein catalysts are applied based on the zeolite clinoptilolite.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: August 2, 1994
    Assignee: CU Chemie Uetikon AG
    Inventors: Herman W. Kouwenhoven, Leopoldo Bertea, Roel Prins
  • Vapor phase corrosion inhibitor-desiccant material
    Patent number: 5332525
    Abstract: A vapor phase corrosion inhibitor-desiccant composite comprising silica gel granules coated with a vapor phase corrosion inhibitor component. The corrosion inhibitor component is selected from a formulation comprising anhydrous molybdates such as ammonium dimolybdate, sodium molybdate and amine molybdates mixed with benzotriazole and sodium nitrate, or from a formulation comprising amine benzoates, amine nitrates and benzotriazole. The composites can be impregnated into foam, extruded with polyolefin films which can additionally be laminated with metallized second film, or encapsulated in an air-permeable container. The corrosion inhibitor formulations have vapor pressures which provide ongoing corrosion protection for susceptible articles situated favorably with respect to the composite.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: July 26, 1994
    Assignee: Cortec Corporation
    Inventors: Boris A. Miksic, Joseph M. Foley, Tsi-Zong Tzou
  • Diesel fuel additive providing clean up detergency of fuel injectors
    Patent number: 5332407
    Abstract: A diesel fuel composition comprising a major portion of a middle distillate fuel oil and a minor portion, effective to clean deposits from diesel fuel injectors, of a diesel fuel detergent comprising the reaction product of:(a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and(b) an alkylphenoxypolyoxyalkylene amine represented by the formula: ##STR2## in which R' represents a hydrocarbyl radical having from 4 to 30 carbon atoms, x has a value from 5 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals.A method of cleaning diesel fuel injectors is also provided.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: July 26, 1994
    Assignee: Texaco Inc.
    Inventor: Sheldon Herbstman
  • Method of inhibiting corrosion in brine solutions
    Patent number: 5330683
    Abstract: An environmentally acceptable and economically appealing method of inhibiting corrosion in brine solution systems wherein an aqueous brine solution is treated with gluconate or sorbitol.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: July 19, 1994
    Assignee: Nalco Chemical Company
    Inventor: Barry W. Sufrin
  • Combination dessicant and vapor-corrosion inhibitor
    Patent number: 5324448
    Abstract: A composition for inhibiting corrosion. The composition contains a mixture of a dessicant and a vapor-corrosion inhibitor. The mixture of dessicant and inhibitor is synergistic: the service life of the corrosion inhibitor is signficiantly longer when so used than when used alone or in in the presence of but not physically mixed with the dessicant.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: June 28, 1994
    Assignee: A + Corp.
    Inventor: Donald P. Mayeaux
  • Process for the preparation of nitrobenzene
    Patent number: 5324872
    Abstract: The invention concerns a gasphase process for the preparation of nitrobenzene from benzene and nitric acid, wherein catalysts are applied based on the zeolite mordenite.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: June 28, 1994
    Assignee: CU Chemie Uetikon AG
    Inventors: Herman W. Kouwenhoven, Leopoldo Bertea, Roel Prins
  • Method and activator compositions to disinfect lenses
    Patent number: 5324447
    Abstract: Methods for disinfecting a lens is disclosed. The methods comprise contacting a lens to be disinfected in a liquid medium with at least one chlorine dioxide precursor in the presence of at least one activator component selected from organic acid anhydrides, oxygen-releasing components and mixtures thereof to effect formation of chlorine dioxide from the chlorine dioxide precursor, thereby disinfecting the lens. Compositions useful in the above-noted methods are also disclosed.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: June 28, 1994
    Assignee: Allergan, Inc.
    Inventors: Sam W. Lam, Paul S. Ripley, J. Abraham M. Espiritu
  • Method of stabilizing blends of melamine and polyols
    Patent number: 5324446
    Abstract: Disclosed herein are compositions comprising an effective combination of an amine terminated polyether and a urea compound, and melamine/polyol blends containing the same.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: June 28, 1994
    Assignee: Miles Inc.
    Inventor: Edmund J. Madaj
  • Water soluble corrosion inhibitors
    Patent number: 5322640
    Abstract: This invention is a method for inhibiting corrosion in metallic flow lines containing hydrocarbon and/or aqueous fluids comprising adding to the fluid contained in the flow line a corrosion inhibiting amount of a water-soluble ampholytic substituted imidazoline having the formula: ##STR1## wherein R1 comprises a radical selected from the group consisting of hydrogen, alkyl, and aryl groups having 6 to 30 carbons; R2 comprises a radical selected from the group consisting of polyalkylene polyamines having from 2 to 16 carbon atoms, NH.sub.2, N(R.sub.4).sub.2, OH and SH; R.sub.3 is a radical selected from the group consisting of carboxylate, carbonate, sulfite, sulfate, phosphite, and phosphate; n is a number from 1 to 10; and, R4 comprises a branched or linear alkyl chain having a length of 1 to 8.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: June 21, 1994
    Assignee: Nalco Chemical Company
    Inventors: Norman E. Byrne, John D. Johnson
  • Amine derivatives as corrosion inhibitors
    Patent number: 5322630
    Abstract: A method of acidizing a subterranean formation with an acqueous acid solution wherein the acid solution contains corrosion inhibiting amounts of an amine derivative prepared by reacting an unsaturated carboxylic acid with (a) fatty amine or polyamine, or (b) a fatty amido amine or polyamine, or (c) a fatty imidazoline amine or polyamine. The derivative is characterized by the absence of primary amino groups, and preferably contains only tertiary amino groups.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: June 21, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Dennis A. Williams, James R. Looney, Daniel S. Sullivan, Brent I. Bourland, John A. Haslegrave, Paul J. Clewlow, Niall Carruthers, Terence M. O'Brien
  • Use of molybdate as corrosion inhibitor in a zinc/phosphonate cooling water treatment
    Patent number: 5320779
    Abstract: A corrosion inhibitor treatment composition for cooling water systems is disclosed in which no chromate is used and no free orthophosphate is present comprising a combination of a localized corrosion inhibitor in the form of a salt of molybdenum, vanadium, or tungsten, a general corrosion and scale inhibitor comprising zinc or nickel, a pair of organic phosphonates, and a stabilizing agent.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: June 14, 1994
    Assignee: Nalco Chemical Company
    Inventor: Kenneth P. Fivizzani
  • Vapor phase corrosion inhibitor-desiccant material
    Patent number: 5320778
    Abstract: A vapor phase corrosion inhibitor-desiccant composite comprising silica gel granules coated with a vapor phase corrosion inhibitor component. The corrosion inhibitor component is selected from a formulation comprising anhydrous molybdates such as ammonium dimolybdate, sodium molybdate and amine molybdates mixed with benzotriazole and sodium nitrate, or from a formulation comprising amine benzoates, amine nitrates and benzotriazole. The composites can be impregnated into foam, extruded with polyolefin films which can additionally be laminated with metallized second film, or encapsulated in an air-permeable container. The corrosion inhibitor formulations have vapor pressures which provide ongoing corrosion protection for susceptible articles situated favorably with respect to the composite.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: June 14, 1994
    Assignee: Cortec Corporation
    Inventors: Boris A. Miksic, Joseph M. Foley, Tsi-Zong Tzou
  • Composition
    Patent number: 5316696
    Abstract: A composition comprises a poly(oxyalkylene)glycol derivative and a long chain anhydride and optionally a hydroxy-oxime. The long chain anhydride can be an alk(en)yl succinic anhydride in which the alk(en)yl group contains at least six carbon atoms. The optional hydroxy-oxime can be an alkyl-substituted benzaldoxime. The composition has improved corrosion resistance and can provide protection of a metal even in the form of a thin film.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: May 31, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventor: Bernard Tury
  • High temperature corrosion inhibitor
    Patent number: 5314643
    Abstract: A process for the inhibition of corrosion caused by naphthenic acid and sulfur compounds during the elevated temperature processing of crude oil by use of a corrosion inhibitor consisting of trialkylphosphate and an alkaline earth metal phosphonate-phenate sulfide.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: May 24, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: James G. Edmondson, S. Blake Pruett
  • Aromatic nucleophilic fluorination
    Patent number: 5315043
    Abstract: A process for halogen exchange fluorination or fluoro-denitration of aromatic compounds having at least one replaceable non-fluorine halogen or nitro substituent with an anhydrous substantially molten alkali metal acid fluoride composition wherein the alkali metal is potassium, rubidium or cesium.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: May 24, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard E. Fernandez, Mark H. Krackov
  • Anticorrosive method of stream and condenser systems
    Patent number: 5302321
    Abstract: The corrosion of steam and condenser systems and piping therefor is minimized by the addition of anti-corrosion amounts of Vitamin A or Vitamin E.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: April 12, 1994
    Assignee: Aquas Corporation
    Inventors: Shunichi Akama, Takanobu Sasa, Tokuko Yanagisawa
  • 1-chloro-2,2,2-trifluoroethyl difluoromethyl ether compositions for removing water from surfaces
    Patent number: 5300253
    Abstract: A composition composed of 1-chloro-2,2,2-trifluoroethyl difluoromethyl ether and at least one surface-active substance and the use of such a composition for removing water from surfaces of objects of diverse material and type are described.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: April 5, 1994
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Hans Buchwald, Joachim Hellmann, Boleslaus Raszkowski, Pierre Barthelemy, Mireille Paulus
  • Corrosion inhibitors
    Patent number: 5300235
    Abstract: Amine derivatives which are compounds of the formula (I): ##STR1## in which R is a C.sub.6-20 hydrocarbon; Y is --CO--NH-- and n is an integer of 1 to 6; or ##STR2## in which X is an alkylene group of 2 to 6 carbon atoms and n is an integer of 0 to 6;each R.sub.1 is independently H, --(CH.sub.2).sub.1-4 COOH, a C.sub.6-20 hydrocarbon or C.sub.6-20 hydrocarbon-carbonyl;R.sub.2 is H, (CH.sub.2).sub.1-4 COOH or C.sub.6-20 hydrocarboncarbonyl;the compound containing at least one (CH.sub.2).sub.1-4 COOH group; or a salt thereof are useful in inhibiting corrosion of metals in oil- and gas-field applications, and also show low toxicity to marine organisms.
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: April 5, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Paul J. Clewlow, John A. Haselgrave, Niall Carruthers, Terence M. O'Brien
  • Method and composition for inhibiting corrosion by sodium and calcium chloride
    Patent number: 5296167
    Abstract: There is disclosed a method to inhibit the corrosion of metals by sodium chloride and calcium chloride solutions by incorporating in the solutions a mixture of mono- and di-hydrogen orthophosphates. Sodium chloride solutions which contain calcium chloride, e.g., rock salt solutions, are inhibited against corrosion when the percentage of dihydrogen orthophosphate is from 10 to 60 percent of the mixture of di- and mono-hydrogen orthophosphates. Calcium chloride solutions are inhibited against corrosion when the percentage of dihydrogen orthophosphate is from 50 to 100 percent of the mixture of di- and mono-hydrogen orthophosphates.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: March 22, 1994
    Inventor: W. Bruce Murray