Patents Represented by Attorney Beatrice N. Robbins
  • Patent number: 5688560
    Abstract: A process for coating metal surfaces in which an uncured resin coating is formed on the surface of a metal by contacting the metal surface with an autodepositing coating composition that contains acid, oxidizing agent, and water-dispersible or water-soluble organic film-forming resin, and the uncured coating is thereafter dried, produces a strongly adherent, highly corrosion-resistant autodeposited coating when the uncured coating is brought, prior to its drying, into contact with an aqueous solution that has a pH adjusted to 7 to 11 and that contains at least one selection from the following inorganic acids and salts thereof: molybdic acid, tungstic acid, polyphosphoric acid, and polysilicic acid.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: November 18, 1997
    Assignee: Henkel Corporation
    Inventors: Takumi Honda, Kazuhisa Naito, Mutsumi Hirota
  • Patent number: 5683816
    Abstract: Zinciferous and/or aluminiferous metal surfaces can be passivated by treatment with a chromium-free aqueous solution of phosphoric acid and molybdenum that is at least partially in a valence state lower than +6, to produce, especially with an acrylic overcoating, a surface as resistant to corrosion as the surface of the same substrate after passivation with conventional liquid compositions that contain hexavalent chromium.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: November 4, 1997
    Assignee: Henkel Corporation
    Inventor: Bruce H. Goodreau
  • Patent number: 5667845
    Abstract: A process enhances corrosion resistance of autodeposited coatings on metallic surfaces by contacting the uncured coating on the metallic surface with a reaction rinse solution containing complex fluoride anions. In a preferred use, because the protective properties of the autodeposited coatings are improved on both cold rolled and galvanized steel, both may be processed simultaneously, providing practical and economic advantages.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: September 16, 1997
    Assignee: Henkel Corporation
    Inventors: Oscar E. Roberto, Shawn E. Dolan
  • Patent number: 5646211
    Abstract: An aqueous autodeposition coating composition that is essentially free of chromium compounds and which produces a film with a much better adherence and corrosion resistance than heretofore obtained, but which does so without a rinse treatment with a chromium-containing solution prior to film curing. The aqueous autodeposition coating composition has a pH of about 1.6 to about 5 and contains(i) water-dispersible or water-soluble organic film-forming resin;(ii) at least one of fluoride ions and flouride ions and complex fluoride ions;(iii) ions of at least one metal selected from zinc, cobalt, manganese, nickel, iron, and aluminum; and(iv) tungstate ion and/or molybdate ion.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: July 8, 1997
    Assignee: Henkel Corporation
    Inventors: Takumi Honda, Kazuhisa Naito
  • Patent number: 5591275
    Abstract: A bath for treating metal surfaces for the formation thereon of composite films for the cold working of metal advantageously comprises an otherwise conventional conversion coating bath that also contains organic cationic polymer having at least 1 cationic nitrogen atom per molecule and having a molecular weight of 1,000 to 1,000,000, or a salt of such a polymer. Major improvements in the lubrication properties, particularly in the seizure resistance, can be achieved by applying out a conventional lubrication treatment on such a composite film. Specifically, practical operating limits in metal cold working, e.g., the working degree or ratio, working speed, tool life, and the like, can be increased in a single step. This is useful in terms of improving productivity, product stability, cost reduction, and the like.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: January 7, 1997
    Assignee: Henkel Corporation
    Inventors: Kazutomo Miyafuji, Shigeo Tanaka, Ryoji Morita
  • Patent number: 5531912
    Abstract: A stearate free solid lubricant for cold working of metals contains approximately equal amounts of an alkene-acrylate ionomer and an alkoxylated alcohol in which the alcohol moiety has from 18-60 carbon atoms and the alkoxylate block has about the same number of carbon atoms. This lubricant can be conveniently applied from aqueous solution/suspension and works effectively even when the underlying steel surface has no conversion coating, which is usually required with stearate lubricants for best results.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: July 2, 1996
    Assignee: Henkel Corporation
    Inventors: Richard J. Church, Kenneth J. Hacias
  • Patent number: 5507884
    Abstract: A highly corrosion-resistant, highly alkali-resistant, and very paintable chromate film on the surface of a steel substrate coated with Zn-containing metal is formed by coating the substrate with an aqueous chromate bath and drying into place, preferably at a substrate temperature of to C., without a water rinse. The bath contains Cr.sup.6+, Cr.sup.3+, phosphate ions, water-soluble glycol ether (WSGE) and/or poly{vinyl alcohol} (PVA), and optionally silica sol, in amounts giving ratios of Cr.sup.3+ /Cr.sup.6+ =0.25 to 4.0, PO.sub.4 /total Cr=0.1 to 2.5, and (WSGE+PVA)/Cr.sup.6+ =0.1 to 0.5 in the bath.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: April 16, 1996
    Assignee: Henkel Corporation
    Inventors: Takao Ogino, Shinji Nomura
  • Patent number: 5500460
    Abstract: The quality of coating in autodeposition from solutions in which the coating is predominantly derived from epoxy resins can be improved in two ways, which can be used jointly or separately: A blocked isocyanate is used as cross linking agent for the epoxy resin, and a surfactant that prevents the occurrence of phase separation during drying of the coating is used. Preferably the surfactant is a fluoroaliphatic polymer ester.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: March 19, 1996
    Assignee: Henkel Corporation
    Inventors: Bashir M. Ahmed, Rohitha M. Jayasuriya, Thomas R. Hopkins
  • Patent number: 5498759
    Abstract: The cleaned surface of an aluminum or aluminum alloy product, for example, aluminum coil, is treated with a 0.5 to 3 second spray of a chromating bath heated to to C., said bath having a pH of 1.0 to 3.0 and containing 0.1 to 3.0 g/L of tungstate ions and/or molybdate ions, 0.5 to 4.0 g/L of hexavalent chromium ions, 5.0 to 30.0 g/L of phosphate ions, and 0.05 to 2.0 g/L of free fluoride ions. A highly corrosion-resistant, highly paint-adherent chromate coating can thereby be formed on the surface of aluminum in less time than that required by prior phosphoric acid-based chromating treatments.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: March 12, 1996
    Assignee: Henkel Corporation
    Inventors: Kazuya Nakada, Masayuki Yoshida
  • Patent number: 5391658
    Abstract: A process for increasing the molecular weight of cycloolefin monomers is provided by this invention which can be incorporated into ring-opening polymerization methods. This method is particularly suited for bulk polymerization processes but can also be used for solution polymerization processes. By increasing the molecular weight of the cycloolefin monomers, polymers having higher glass transition temperatures are obtained.
    Type: Grant
    Filed: January 25, 1989
    Date of Patent: February 21, 1995
    Assignee: B. F. Goodrich Company
    Inventors: Parley C. Lane, Linwood P. Tenney, George M. Benedikt, Paul T. Stricharczuk
  • Patent number: 5274026
    Abstract: Curable polycycloolefin resin solutions having particular utility in the fabrication of printed circuit boards are disclosed. A solvent soluble polymer is typically solution polymerized from norbornene-type monomers in the presence of a metathesis catalyst package. This polymer may then be purified by precipitation and redissolution. A curing agent, such as a high activation temperature peroxide can then be added to the solution and then this curing agent containing solution can be used to impregnate a suitable substrate such as a fiberglass cloth. The impregnated substrate can then be dried, preferably at temperatures above the glass transition temperature of the polycycloolefin but below the activation temperature of the curing agent. Then one or more prepregs can be stacked and laminated to conductive foil at a temperature high enough to activate the curing agent.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: December 28, 1993
    Assignee: The B. F. Goodrich Company
    Inventors: George M. Benedikt, David J. Smith
  • Patent number: 4965082
    Abstract: The invention is a process for making packaged uncooked pasta pieces from a feedstock comprising semolina, water and a source of ethyl alcohol wherein the amount of ethyl alcohol is 0.1% to 10% wherein the total moisture content of the feedstock is 26% or less. The extruded pasta can be packaged immediately without any drying step. The extruded pasta when packaged in vapor barrier containers can be sold as "fresh pasta" and may be stored at room temperature on the grocery shelf. The extruded pasta when packaged in a cardboard box will dry to consumer-acceptable dry pasta and can be sold as dry pasta and will keep indefinitely on the grocery shelf.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: October 23, 1990
    Assignee: Borden, Inc.
    Inventors: Dhyaneshwar B. Chawan, Carleton G. Merritt, Edward A. Matuszak