Patents Represented by Attorney, Agent or Law Firm Norvell E. Wisdom, Jr.
  • Patent number: 5389283
    Abstract: An effective phosphate free and organic solvent free aqueous acidic cleaner for soiled plastic surfaces is an aqueous solution or dispersion that has a pH in the range from about 4.4--about 6.1; that has a buffering capacity sufficiently high that at least 0.06 milliequivalents of a strong alkali per liter of the composition must be added to raise the pH of the composition by 0.1 pH unit; and that consists essentially of water and:(A) from about 0.4 to about 10 milliequivalents per kilogram of total composition ("mEq/kg") of acids selected from the group consisting of hydroxycarboxylic and dicarboxylic acids;(B) from about 1.4 to about 20 mEq/kg of salts containing anions of acids selected from the group consisting of hydroxycarboxylic and dicarboxylic acids; and(C) from about 0.21 to about 3.3 grams per kilogram of total composition ("g/kg") of nonionic surfactant; and, optionally,(D) an amount of hydrotrope material that is from about 0.25 to about 0.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: February 14, 1995
    Assignee: Henkel Corporation
    Inventor: Theodore D. Held, III
  • Patent number: 5382295
    Abstract: An aqueous alkaline cleaner for aluminum has a pH in the range from 10.0-12.0 and contains:(A) from 0.5 to 10.0 g/L of an alkali builder component;(B) from 0.5 to 10.0 g/L of aminoalkyl- and/or hydroxyalkyldi-phosphonic acids and/or their water soluble salts;(C) from 0.1 to 3.0 g/L of an aluminum ion sequestering agent component; and(D) from 0.5 to 5.0 g/L of a surfactant component.Cleaning aluminum and aluminum alloy with such a cleaner generates an excellent surface condition with respect to de-smutting performance, water wettability, avoidance of black smut production, blackening, and paint adherence at least as good as that achieved with conventional acid cleaners, without requiring any acid wash.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: January 17, 1995
    Assignee: Henkel Corporation
    Inventors: Tomoyuki Aoki, Yoji Ono
  • Patent number: 5378292
    Abstract: The following water soluble materials are all satisfactory internal accelerators for otherwise conventional zinc phosphate conversion coating solutions: reducing sugars, starch, urea, and poly{acrylates and methacrylates}. Concentrates including these ingredients and otherwise conventional constituents of zinc phosphate conversion coating compositions, except for excluding conventional accelerators other than nitrate, are stable in composition during storage, unlike most conversion coating compositions containing conventional accelerators. Thus concentrates according to the invention are practical single-package concentrates that can be made into working phosphating compositions by dilution with water only.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: January 3, 1995
    Assignee: Henkel Corporation
    Inventors: Robert W. Miller, Michael Petschel
  • Patent number: 5378379
    Abstract: A combination of phosphonoinidazoline at surfactant, soluble polyvalent metal ions, and a metal etching component, which is tolerant of aluminum cations and aluminate anions, when used as the Stage 4 rinse for aluminum cans provides good can mobility and good resistance to loss of mobility during heating of the treated cans to a greater extent than is normal during high speed processing. A concentrate of the active ingredients of such a Stage 4 treatment also maintains its effectiveness for longer than do similar produels when stored at high ambient temperatures.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: January 3, 1995
    Assignee: Henkel Corporation
    Inventor: James P. Bershas
  • Patent number: 5372853
    Abstract: A process of retaining or enhancing corrosion resistance of autodeposited coatings on metallic surfaces by contacting the uncured coating on the metallic surface with a rinse solution containing hydrofluorozirconic acid or a salt thereof, such as nickel or cobalt salt. The metallic surface may be cold rolled steel or galvanized steel. The resinous autodeposited coatings are poly{vinylidene chloride} polymers. Copolymers containing at least 50% by weight poly{vinylidene chloride} are suitable. Because the protective properties of the autodeposited coatings are improved on both types of steel, both may be processed simultaneously, providing practical and economic advantages.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: December 13, 1994
    Assignee: Henkel Corporation
    Inventor: Oscar E. Roberto
  • Patent number: 5372656
    Abstract: In a process for phosphatizing electrolytically and/or hot-dip galvanized steel strip, the steel strip is briefly treated with acidic phosphatizing solutions which contain, in addition to zinc and phosphate ions, manganese and nickel cations and anions of oxygen-containing acids with an accelerator effect. The weight ratio of nickel cations to nitrate anions is adjusted to between 1:10 and 1:60 and the weight ratio of manganese cations nitrate anions is adjusted to between 1:1 and 1:40.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: December 13, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventor: Joerg Riesop
  • Patent number: 5370909
    Abstract: A corrosion resistant film with a low coefficient of friction that facilitates automatic conveying can be formed on the surface of tin-plated steel or of aluminum, particularly DI cans of one of these types of metal, by contacting the aluminum or the tin plated steel with an aqueous liquid composition having a pH in the range from 2.0 to 6.5 and containing:(A) from 1 to 30 g/L of phosphate ions,(B) from 0.1 to 10 g/L of condensed phosphate ions, and(C) from 0.1 to 20 g/L as solids of water-soluble polymers of N-vinylphenol substituted on the phenolic rings with dialkylaminomethyl groups.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: December 6, 1994
    Assignee: Henkel Corporation
    Inventors: Shigeo Tanaka, Tomoyuki Aoki, Masayuki Yoshida, Yasuo Iino, Shinichiro Asai
  • Patent number: 5368757
    Abstract: An effective lubricant for cold working of metals is provided by a combination of a water soluble copolymer of styrene with maleic anhydride, maleic acid, and/or an ammonium or substituted ammonium maleate salt with an ethoxylated alcohol, preferably an alcohol with at least 40 carbon atoms before ethoxylation and about 50% of its mass in the polyoxyethylene block in the molecule.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: November 29, 1994
    Assignee: Henkel Corporation
    Inventor: Peter F. King
  • Patent number: 5366567
    Abstract: A chromating composition including hexavalent and trivalent chromium, phosphate ions, silica, and a silane coupling agent and with ratios among its components within certain specified ranges produces a protective layer on the surface of zinc coated steel treated with the composition that has an excellent alkali resistance, corrosion resistance, coatability, and welding tolerance.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: November 22, 1994
    Assignee: Henkel Corporation
    Inventors: Takao Ogino, Arata Suda, Takayuki Aoki, Mitsuyuki Koga
  • Patent number: 5360841
    Abstract: The addition of ethylene oxide/propylene oxide block copolymers containing 5 to 35 weight % of ethylene oxy groups and molar masses of the propylene glycol block between 1500 and 3000 to dry, hydraulic binder materials results in reduced dust formation, improved wettability, and enhanced flow properties of these materials when they are mixed with water.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: November 1, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Bernhard Knop, Horst Tamm, Gerhard Walter
  • Patent number: 5358988
    Abstract: Described are water-in-oil emulsions containing an emulsion polymerizate which is soluble in or swells in water and an oil phase, consisting at least partly of monoether compounds, that is not miscible with water in all proportions. Also described are a method of preparing such emulsions and their use as agents for precipitation, sedimentation, and/or thickening.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: October 25, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Ludwig Schieferstein, Herbert Fischer, Hermann Kroke, Brigitte Spei, Volker Wehle, Rainer Jeschke, Uwe Ploog
  • Patent number: 5356977
    Abstract: Substantially improved resistance to sea water corrosion along with adequate hydrophilicity and retention or even improvement of hydrophilicity after exposure to high temperature can be provided on a metal substrate, particularly an aluminum alloy of the type used for heat exchanger fins, by an aqueous liquid hydrophilicizing treatment composition containing poly{alkylene imine} and alkali metal silicae, and, optionally, polyether polyols. The hydrophilicizing treatment is preferably applied over a conventional conversion coating, particularly a chromium phosphate or chromium oxide conversion coating.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: October 18, 1994
    Assignee: Henkel Corporation
    Inventor: Chi-Fan Hsu
  • Patent number: 5356491
    Abstract: A superior protective prepainting treatment for tin plated steel surfaces, particularly DI cans, may be achieved by contacting the surface with an aqueous liquid composition containing from 1 to 30 g/L of phosphate ions, from 0.1 to 5 g/L of condensed phosphate ions, from 0.5 to 5 g/L of reducing agent, and from 0.1 to 20 g/L of dissolved solids of a water soluble aminated poly{vinyl phenol} resin.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: October 18, 1994
    Assignee: Henkel Corporation
    Inventors: Tomoyuki Aoki, Masayuki Yoshida
  • Patent number: 5356490
    Abstract: Heating an aqueous mixture of a fluoroacid such as H.sub.2 TiF.sub.6 and an oxide, hydroxide, and/or carbonate such as silica produces a clear mixture with long term stability against settling of any solid phase, even when the oxide, hydroxide, or carbonate phase before heating was a dispersed solid with sufficiently large particles to scatter light and make the mixture before heating cloudy. The clear mixture produced by heating can either be mixed with water soluble and/or water dispersible polymers, for example with dispersed polymers of the diglycidyl ether of bisphenol-A or an acrylic acid polymer, or with soluble hexavalent and/or trivalent chromium, to produce a composition that improves the corrosion resistance of metals treated with the composition, especially after subsequent painting.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: October 18, 1994
    Assignee: Henkel Corporation
    Inventors: Shawn E. Dolan, Gary A. Reghi
  • Patent number: 5356607
    Abstract: This invention is a process for the hydrothermal preparation of sodium disilicate with a molar ratio of Na.sub.2 O:SiO.sub.2 of 1:2 at an elevated temperature and a pressure corresponding to said temperature in a pressure vessel, characterized in that quartz sand and caustic soda solution and/or an aqueous solution of amorphous sodium disilicate at a total solids concentration of from 50 to 75% by weight are heated to at least 235.degree. C. in a first step, the concentration may be increased in an optional second step by removing water from the reaction mixture, in a third step, dependent on whether the second step has been carried out, the amount of water removed in the second step is completely or partially added again to the mixture during or immediately after same has been cooled to from 90.degree. C. to 130.degree. C., and then the obtained crystalline sodium disilicate is recovered.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: October 18, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventor: Guenther Just
  • Patent number: 5352250
    Abstract: The invention relates to a process for treating (recycling) lacquer coagulum containing lacquer overspray and layered silicate containing coagulating agents, in which the layered silicate containing paint coagulum is vacuum dried, processed at low temperatures and then ground, and to the use of the processed paint coagulum as a basic component, additive, or filler in lacquers and paints, building materials, sealing materials, car underseal compositions or adhesives.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: October 4, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Juergen Geke, Lutz Huesemann, Hans-Joergen Rehm
  • Patent number: 5350517
    Abstract: Described is a method of recycling the sludge which arises during the zinc phosphating of steel surfaces. The sludge is preferably digested with nitric acid, the iron selectively extracted from the digested solution with liquid/liquid extraction and the extract thus obtained reused in the preparation of zinc phosphating solution. The preferred extraction solvent is a solution of the monoester of 2-ethylhexyl alcohol with phosphoric acid in kerosene.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: September 27, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Willi Buchmeier, Wolf A. Roland
  • Patent number: 5350791
    Abstract: Substantially improved retention of hydrophilicity after exposure to high temperature can be provided on a metal substrate, particularly an aluminum alloy of the type used for heat exchanger fins by an aqueous liquid hydrophilicizing treatment composition containing acrylic and/or methacrylic acid polymer or copolymer, polyether alcohol, and alkali metal silicate. The treatment composition may also contain an anti-microbial agent and additional alkalinizer. The hydrophilicizing treatment is preferably applied over a conventional conversion coating, particularly a chromium phosphate or chromium oxide conversion coating.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: September 27, 1994
    Assignee: Henkel Corporation
    Inventor: Chi-Fan Hsu
  • Patent number: 5344859
    Abstract: This invention includes new water-dilutable binder mixtures based on alkyd resins modified by poly{ethylene glycol} and poly{N-acyl alkylene imines}, a process for preparing such binder mixtures, and the use of such binders in oxidatively drying paints and varnishes.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: September 6, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Ulrich Eicken, Brigitte Hase, Manfred Gorzinski, Wolfgang Gress, Norbert Stork
  • Patent number: 5342965
    Abstract: Branched fatty substances may be produced by reacting maleic acid anhydride with fatty acids having 16 to 24 carbon atoms and 1, 2, 3, 4, or 5 double bonds, or the esters of such acids, with alcohols containing 1 to 4 carbon atoms, in the presence of at least one rhodium and/or platinum catalyst.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: August 30, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Arno Behr, Hans-Peter Handwerk