Patents Represented by Attorney R. E. Elden
  • Patent number: 5328721
    Abstract: A process to manufacture and coat a sodium carbonate perhydrate containing 10.5% to 14% active oxygen which is stable in a non-phosphate detergent composition and which has a bulk density of from 900 to 1,050 kg/m.sup.3. Anhydrous sodium carbonate with a pore volume of at least 0.29 ml/g is contacted with 50% to 75% by weight hydrogen peroxide in the presence of 1-hydroxyethylidene-1,1-diphosphonic acid and water is evaporated at a rate to maintain a dry reaction mixture. The product is coated by sparging sodium borosilicate at a rate to avoid moistening the particles.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: July 12, 1994
    Assignee: FMC Corporation
    Inventors: Basil A. Guiliano, William A. Hills, Charles V. Juelke
  • Patent number: 5281741
    Abstract: A process is provided for preparing an aryl diphosphate ester containing less than 5% by weight of triarylphosphate. The process reacts a solution of a dihydroxy aromatic compound and an excess of phosphorus oxychloride in a nonaqueous solvent having a boiling point greater than 110.degree. C. The excess phosphorus oxychloride and part of the solvent are distilled from the solution at atmospheric pressure and the intermediate, a diphosphotetrachloridate solution, is reacted with a monohydric aryl compound. After extracting with an aqueous, alkaline solution the product is recovered by distilling off the remaining solvent.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: January 25, 1994
    Assignee: FMC Corporation
    Inventors: Louis T. Gunkel, Henry J. Barda
  • Patent number: 5266298
    Abstract: A process is provided for removing iron from hydrogen peroxide by contacting the hydrogen peroxide with .alpha.-zirconium phosphate for up to 5 minutes at less than 35.degree. C.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: November 30, 1993
    Assignee: FMC Corporation
    Inventors: James L. Manganaro, Donald Gibilisco, James R. Reed, Teresita Frianeza-Kullberg
  • Patent number: 5262018
    Abstract: A process for purifying a peroxygen compound in an aqueous solution of a peroxygen-stable acid or salt of the acid, comprising contacting the aqueous solution at a pH of about 0.5 to 4 with a chelating ion exchange resin and separating the product as a purified aqueous solution, or optionally as a solid.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: November 16, 1993
    Assignee: FMC Corporation
    Inventors: Morton Meadow, Charles J. Lymburner, C. Andrew Thompson
  • Patent number: 5248389
    Abstract: A process is provided for peroxygen bleaching of high yield pulp in which sodium carbonate replaces sodium hydroxide and sodium silicate. The process employs a chelating agent as a substitute for the silicate normally required so that the process can operate as a closed cycle system.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: September 28, 1993
    Assignee: FMC Corporation
    Inventors: Stanley A. Heimburger, Steve E. Tremblay, Tommy Y. Meng
  • Patent number: 5205835
    Abstract: A process is provided in which manganese dioxide stains in denim fabric which has been partially decolorized with potassium permanganate are neutralized or removed by an aqueous solution of peracetic acid containing at least 1 part by weight acetic acid and 1.5 parts by weight hydrogen peroxide per part by weight peracetic acid.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: April 27, 1993
    Assignee: FMC Corporation
    Inventors: Robert H. Tieckelmann, Lisa M. Kurschner
  • Patent number: 5205865
    Abstract: A method is provided for forming a tacky surface area on a styrenic resin, such as a polystyrene label. A thin film is applied of an alkyl, aryl or alkaryl ester of a phosphorus oxyacid providing a tacky area suitable for bonding to another surface. A composition particularly useful for bonding polystyrene labels to bottles is a solid alkyl, aryl or alkaryl ester of a phosphorus oxyacid and a cosolvent selected from terpenoids and aromatic compounds having a flash point of at least 35.degree. C. and a boiling point between 100.degree. C. and 260.degree. C.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: April 27, 1993
    Assignee: FMC Corporation
    Inventor: Douglas G. Placek
  • Patent number: 5206404
    Abstract: The invention is a novel composition of alkylated phenyl phosphate esters comprising by weight 1% to 20% trialkylphenyl phosphate, 10% to 50% dialkylphenyl monophenyl phosphate, 15% to 60% monoalkylphenyl diphenyl phosphate and less than 2% triphenyl phosphate and a process for preparing the composition comprising passing the composition at least once through a thin film evaporator at a temperature of about 200.degree. C. to about 250.degree. C. at a pressure sufficiently less than 5 kPa to evaporate about 5% to about 30% of the composition.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: April 27, 1993
    Assignee: FMC Corporation
    Inventors: Louis T. Gunkel, Douglas G. Placek, Michael P. Marino, Jr., John Crosby, Sundeep G. Shankwalkar
  • Patent number: 5194163
    Abstract: The present invention is a process for decreasing the concentration of a lignin-containing organic carbon in an aqueous system by incorporating peracetic acid or Caro's acid therein. The process is particularly useful for decolorizing lignin-containing aqueous solutions such as effluents from a pulp mill.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: March 16, 1993
    Assignee: FMC Corporation
    Inventor: R. Kent Saugier
  • Patent number: 5194176
    Abstract: The invention provides a process to coat dry particles comprising sodium carbonate perhydrate to provide a stable dry particulate solid which releases hydrogen peroxide when contacted with an aqueous solution. The coated particles are readily soluble in water and/or stable when formulated into a solid detergent.
    Type: Grant
    Filed: April 2, 1991
    Date of Patent: March 16, 1993
    Assignee: FMC Corporation
    Inventors: William Copenhafer, Basil A. Guiliano, William A. Hills, Charles V. Juekle, Stephen Tomko
  • Patent number: 5190669
    Abstract: The present invention is a process for decreasing the concentration of a lignin-containing organic carbon in an aqueous system by a combination of ozone and hydrogen peroxide. The process is particularly useful for decolorizing lignin-containing aqueous solutions such as effluents from a pulp mill.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: March 2, 1993
    Assignee: FMC Corporation
    Inventor: A. Thomas Weibel
  • Patent number: 5162137
    Abstract: A method is provided for applying a polystyrene label to a surface of a polystyrenic article. The process comprises applying a thin film of a terpenoid compound to the polystyrene, the terpenoid compound having a boiling point between 150.degree. C. and 260.degree. C.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: November 10, 1992
    Assignee: FMC Corporation
    Inventor: Douglas G. Placek
  • Patent number: 5149414
    Abstract: The invention is a porous gas diffusion electrode suitable for manufacturing hydrogen peroxide by the reduction of oxygen in an alkaline electrolyte and of a process for fabricating the electrode.
    Type: Grant
    Filed: November 20, 1986
    Date of Patent: September 22, 1992
    Assignee: FMC Corporation
    Inventors: John S. C. Chiang, Charles J. Nicholson
  • Patent number: 5138085
    Abstract: The invention is a process for purifying a solid, storage-stable tris(bromophenyl)phosphate ester dissolving a crude tris(bromophenyl)phosphate in an ester at an elevated temperature, and cooling the solution sufficiently to recover a solid phase.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: August 11, 1992
    Assignee: FMC Corporation
    Inventor: Louis T. Gunkel
  • Patent number: 5137642
    Abstract: A process is provided for detoxifying an aqueous solution containing weak acid-dissociable cyanide metal complexes. The process comprises incorporating hydrogen peroxide and at least 1 mole of citric acid per mole of complexed metal ion and maintaining the pH of the solution between 8 and 12.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: August 11, 1992
    Assignee: FMC Corporation
    Inventors: Harry M. Castrantas, Michael R. Fagan
  • Patent number: 5135714
    Abstract: A process is provided for sterlizing a web of packaging materials which is to be formed into containers for aseptic packaging. The process comprises contacting the web with aqueous solution of ozone and hydrogen peroxide and subsequently irradiating the surface with ultra-violet radiation.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: August 4, 1992
    Assignee: FMC Corporation
    Inventor: James J. Wang
  • Patent number: 5128496
    Abstract: The invention is a process for preparing a solid, storage-stable tris(bromophenyl)phosphate ester by the phosphorylation of a bromophenol and recovering the product by cooling a solution of the reaction mixture from a hydrocarbon solvent containing 2 to 20 parts of a C5 to C10 alkane per part of a C6 to C10 arene.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: July 7, 1992
    Assignee: FMC Corporation
    Inventor: Louis T. Gunkel
  • Patent number: 5128067
    Abstract: A flame retardant grease composition is described for low temperature applications comprising mixed alkoxy and alkylated phenyl triesters of a phosphorus oxyacid as a base fluid and a siliceous microparticulate inorganic thickener. The grease has excellent low, medium and high temperature physical properties, which makes it suitable for service in applications with wide temperature (-40.degree. C. to +150.degree. C.) fluctuations. The benefits of reduced rolling resistance can be realized in significant energy savings and the possibility of constructing longer conveyor lines with existing drive motors.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: July 7, 1992
    Assignee: FMC Corporation
    Inventor: Douglas G. Placek
  • Patent number: 5100624
    Abstract: An apparatus and a method is provided for measuring the rate of flow of gas from a sample of a peroxygen, such as, hydrogen peroxide, thereby indicating the stability of the peroxygen. The invention overcomes the disadvantages of the prior methods which are less precise and have a long time delay.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: March 31, 1992
    Assignee: FMC Corporation
    Inventor: Edward F. Dougherty
  • Patent number: 5075115
    Abstract: A process is provided for the condensation polymerizing lactic acid to a polymer with a weight average molecular weight of 2,500 to 4,500 containing less than 4% lactide and for a controlled release dosage form comprising a pharmaceutically active ingredient in a matrix of poly(lactic acid) and its copolymers with glycolic acid, valerolactone, .epsilon.-caprolactone, .epsilon.-decalactone, hydroxybutyric acid, .beta.-hydroxyvaleric acid and dioxanone.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: December 24, 1991
    Assignee: FMC Corporation
    Inventor: Charles J. Brine