Patents Represented by Attorney, Agent or Law Firm Norvell E. Wisdom, Jr.
  • Patent number: 5691048
    Abstract: Article of manufacture and method of making the same in which a metal substrate has an undercoating is made from a combination of at least one pulverulent metal and a transition metal compound and a coating thereon containing an autodeposited resin formed under autodepositing conditions.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: November 25, 1997
    Assignee: Henkel Corporation
    Inventors: Oscar E. Roberto, Marc A. Maxim
  • 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: 5667843
    Abstract: The protection against black and white rust on zinciferous surfaces by a conventional chromating treatment is improved by drying into place on the zinciferous surface before chromating a pre-treatment composition that contains hexavalent chromium ion plus one or more salts of nickel and cobalt, in an amount to produce an add-on of 0.5 to 100 mg/m.sup.2 of metal.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: September 16, 1997
    Assignee: Henkel Corporation
    Inventors: Noriaki Yoshitake, Kensuke Mizuno, Takao Ogino
  • 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: 5645650
    Abstract: The present invention produces a highly corrosion-resistant, highly rust-inhibiting, and strongly paint-adherent conversion coating on the surface of magnesium-containing metals, and does so rapidly and at relatively low temperatures, using a substantially chromium-free conversion treatment bath.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: July 8, 1997
    Assignee: Henkel Corporation
    Inventors: Sadao Ishizaki, Masahiko Nishida, Yokichi Sato
  • Patent number: 5646306
    Abstract: The practicality of known depolymerization reactions in which there is a danger of building up adherent residues on heat transfer surfaces is greatly improved by performing the process under conditions that provide a driving force which assures that none of the feed material and none of any liquid or solid residue produced during the depolymerization of the feed material remains in contact with any heat transfer surface for a time sufficiently long to form any adherent solid residue on the surface. A preferred apparatus for achieving such a driving force includes a horizontal thin film evaporator, a controlled continuous input of liquid feed material, and continuous collection of desired reaction product and any residue that remains condensed throughout its passage through the reaction zone.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: July 8, 1997
    Assignee: Henkel Corporation
    Inventor: A. Frederick Elsasser, Jr.
  • Patent number: 5634979
    Abstract: The invention is a cleaning solution for degreasing metal articles which contains at least one chlorine-free nonionic surfactant with an HLB in the range of 6.5 to 9.5; a second chlorine-free nonionic surfactant with an HLB in the range of above 9.5 to about 14; a chlorinated nonionic surfactant, and an alkalinizing agent and optionally also one or more of anionic or amphoteric surfactant; hydrotroping agents; solubilizers; organic builders, and corrosion inhibitors. The preferred composition of the invention can replace a vapor degreasing process for cleaning oil, grease, and waxy-type contaminants from metal articles to the level of cleanliness required in the aerospace industry.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: June 3, 1997
    Assignee: Henkel Corporation
    Inventors: Lawrence R. Carlson, Philip M. Johnson, Dennis A. Kent
  • Patent number: 5624480
    Abstract: An acidic substitutional plating bath for zinciferous surfaces, particularly zinciferous metal-plated steel sheet, with which sludge production and equipment corrosion are inhibited and which has an improved heavy metal ion deposition efficiency is provided by an aqueous composition that has a pH of 2 to 4.5 and that contains 1.5 to 40 g/L of at least one heavy metal ion selected from nickel, iron, and cobalt; 0.5 to 10 g/L of phosphate ions; 1 to 250 g/L of sulfate ion; and 1 to 20 g/L of organic acid.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: April 29, 1997
    Assignee: Henkel Corporation
    Inventors: Noriaki Yoshitake, Yoshiyuki Murasawa, Shotaro Tsuda
  • Patent number: 5603754
    Abstract: A bath for the treatment of DI cans that contains phosphate ions, at least one of zirconium and titanium compounds, oxidizing agent at no more than 500 ppm, and fluorides at no more than 2,000 ppm as fluorine, and that has a pH of 2.0 to 4.0, is useful for treating the surface of both aluminum and tinplate cans prior to the painting/printing thereof.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: February 18, 1997
    Assignee: Henkel Corporation
    Inventors: Tomoyuki Aoki, Akio Shimizu, Masayuki Yoshida
  • Patent number: 5599884
    Abstract: Amino resins that contain more free formaldehyde than is desirable for health and/or pollution reasons can be treated with a mixture of diketo reagents (or their nitrogen analogs) and other compounds containing amino moieties to reduce the free formaldehyde content while not diminishing, and in some cases even enhancing, the ability of the resins to function according to their normal uses. The invention is especially useful for melamine-formaldehyde resin dispersions useful to detackify paint.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: February 4, 1997
    Assignee: Henkel Corporation
    Inventor: Scott J. Beleck
  • Patent number: 5595611
    Abstract: An aqueous solution of manganese phosphate and phosphoric acid, preferably with little or no content of any material conventionally recognized as an accelerator or of any divalent metal ions other than manganese and iron, forms a good quality paint undercoating phosphate conversion coating on metal substrates, particularly on steel and galvanized steel substrates, when contacted by spraying or immersion with the substrates at a temperature of 54.degree.-65.degree. C. for a time of 2-5 minutes.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: January 21, 1997
    Assignee: Henkel Corporation
    Inventors: Mervet S. Boulos, David C. Montrose, Michael Petschel
  • 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: 5591702
    Abstract: Solvent assisted alkaline paint stripping can be speeded by using mixtures of (i) glycol and/or oligoglycol monoethers with (ii) unetherified glycols and oligoglycols and/or alkanolamines.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: January 7, 1997
    Assignee: Henkel Corporation
    Inventor: Donald P. Murphy
  • Patent number: 5587063
    Abstract: Anodized aluminum surfaces are electrolytically colored using alternating current in a process in which two different coloring baths are sequentially employed. One bath contains copper(II) ions and an additive which improves throwing power thereby providing uniform distribution of the depth of color. The other bath contains tin(II) ions, silver ions, or both tin(II) and silver ions. If tin(II) ions are included, additives which stabilize tin(II) ions and improve throwing power are also included. Either bath may be used first. The use of two separate coloring baths provides colored aluminum surfaces which have excellent resistance to corrosion. Workpieces with reddish-gold hues and darker tones can be produced.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: December 24, 1996
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Peter Kuhm, Christine Schroeder, Volker Sander, Juergen Lindener, Loert De Riese-Meyer
  • Patent number: 5584946
    Abstract: The invention concerns a method of pretreating aluminum or aluminum alloy surfaces before application of a permanent corrosion-protective conversion coating treatment, in particular before phosphating in acidic phosphating baths containing zinc, a chromating treatment, or a chromate free treatment. The method is characterized in that the surfaces are brought into contact with acidic aqueous treatment solutions containing complex fluorides of the elements boron, silicon, titanium, zirconium, or hafnium, alone or in mixtures with each other, at total concentrations between 100 and 4000 mg/L and at a pH between 0.3 and 3.5. Following the pretreatment, the aluminum or aluminum alloy parts may, after shaping if necessary, be joined by adhesive bonding and/or welding to each other or to parts made of steel, zinc plated and/or zinc alloy plated steel, and/or aluminum or aluminum alloy plated steel.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: December 17, 1996
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Uwe Karmaschek, Achim Roland, Hubert Vennschott, Harald Wennemann
  • Patent number: 5585340
    Abstract: An effective phosphate free and organic solvent free aqueous acidic cleaner for soiled plastic surfaces is a low foaming aqueous solution or dispersion that consists essentially of water and:(A) hydroxycarboxylic and/or dicarboxylic acid or acids;(B) nonionic surfactant; and, optionally, one or more of the following:(C) salts including anions of hydroxycarboxylic and/or dicarboxylic acid or acids, preferably anions of the same acid or acids as specified for part (A); and(D) a sufficient amount of hydrotrope material to produce a stable homogeneous solution or dispersion of components (A) through (C) in water; and(E) a sufficient amount of a biocidal material to inhibit growth of any bacteria and/or fungi that may be present in the composition.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: December 17, 1996
    Assignee: Henkel Corporation
    Inventor: Theodore D. Held, III
  • Patent number: 5584943
    Abstract: A lubricant and surface conditioner for formed metal surfaces, particularly beverage containers, reduces the coefficient of static friction of said metal surfaces and enables drying said metal surfaces at a lower temperature. An aqueous composition for forming the conditioner by contact with metal surfaces includes a water-soluble organic material selected from a phosphate ester, alcohol, fatty acid including mono-, di-, tri-, and polyacids; fatty acid derivatives such as salts, hydroxy acids, amides, esters, ethers and derivatives thereof; and mixtures thereof and at least one of the elements selected from zirconium, titanium, cerium, aluminum, iron, tin, vanadium, tantalum, niobium, molybdenum, tungsten, and hafnium in metallic or ionic form. In order to avoid formation of sludge in the aqueous lubricant and surface conditioner forming composition, the composition should contain as little as possible of materials containing phenanthrene rings, such as conventional surfactants made by ethoxylating rosin.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: December 17, 1996
    Assignee: Henkel Corporation
    Inventors: Richard D. Banaszak, Timm L. Kelly, Gary L. Rochfort
  • Patent number: 5584944
    Abstract: A lubricant and surface conditioner for formed metal surfaces, particularly aluminum and tin beverage containers, reduces the coefficient of static friction of said metal surfaces and enables drying said metal surfaces at a lower temperature. The conditioner includes a water-soluble organic material selected from amine oxides and quaternary ammonium salts, fluozirconate, fluohafnate, or fluotitanate ion, and preferably also phosphate and nitrate ions. Good resistance to damaging the friction reducing effect by overheating and to staining of the domes of treated containers during pasteurization can be achieved.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: December 17, 1996
    Assignee: Henkel Corporation
    Inventors: James P. Bershas, Timm L. Kelly, Gary L. Rochfort, Henry A. Rossmaier