With Heat Treatment Of Coating Patents (Class 204/500)
  • Patent number: 6190525
    Abstract: Disclosed are improved electrodeposition bath compositions comprising a resinous phase dispersed in an aqueous medium, the resinous phase being comprised of an active hydrogen containing ionic electrodepositable resin and a curing agent, where the improvement comprises the addition to an electrodeposition bath of at least one source of yttrium in an amount of about 10 to 10,000 parts per million of total yttrium based on electrodeposition bath weight. The electrodeposition bath compositions are preferably cationic and provide for excellent corrosion resistance over a variety of metal substrates including untreated steel. Also disclosed is a method of electrocoating a conductive substrate using the improved electrodeposition bath compositions of the invention. Metallic substrates which are coated using the method of the invention are also disclosed.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: February 20, 2001
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Richard F. Karabin, Alan J. Kaylo
  • Patent number: 6132581
    Abstract: Disclosed are electrodepositable coating compositions containing a polymer prepared from the polymerization of an ethylenically unsaturated monomer having a heterocyclic ring containing at least one ring nitrogen atom bonded to a vinyl group or a mixture of monomers comprised of such a monomer, the compositions further including contaminants capable of forming defects in the electrodeposited coating surface. The polymer is present in an amount effective to abate formation of the surface defects caused by the contaminants. A method of electrocoating a conductive substrate using the electrodepositable coating compositions of the invention is also disclosed.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: October 17, 2000
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Alan J. Kaylo, Thor G. Lingenfelter
  • Patent number: 6090253
    Abstract: A work is dipped in electrodeposition paint, and then the work is baked. Between the dipping step and baking step of the work, there is provided a step for spraying hot water mist to the work. It is preferable that the temperature of the hot water mist is in a range equal to or higher than 40.degree. C. and lower than 100.degree. C. Water or vapor may be used instead of the hot water mist.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: July 18, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenshichiro Shima, Takashi Arakawa, Hirokazu Sugiyama
  • Patent number: 6013167
    Abstract: A stable emulsion comprising a polyetherimide resin, neutralization agent, cosolvent, solvent, ring opening agent, and water, for use in a cataphoretic deposition process for forming a polyetherimide coating on a substrate, particularly a substrate having a complex geometry.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: January 11, 2000
    Assignee: General Electric Co.
    Inventors: Christian Bailly, Gert De Wit, Francois Guy-Marie Schue, Rossitza Schue, El Houssain Qariouh
  • Patent number: 5858190
    Abstract: A method for manufacturing ink jet printheads and the product printheads derived therefrom. The method involves the electro-deposition passivation of ink channels in ink jet printheads.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: January 12, 1999
    Assignee: MicroFab Technologies, Inc.
    Inventor: Donald J. Hayes
  • Patent number: 5830340
    Abstract: A method for forming filtration members using an electric potential to control the migration of electrically charged particles and hence to control the formation of a membrane layer on a substrate. In one embodiment, electrophoresis and electrodialysis processes are used to control the migration of sol particles and the deposition of the sol particles to provide a desired pore size associated with the membrane layer. In another embodiment, the substrate pores are impregnated with a reagent and, subsequently, electrophoresis and "reverse" electrophoresis processes are utilized to control the diffusion of ions in connection with the formation of the membrane layer.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: November 3, 1998
    Assignee: Trumem International LLC
    Inventors: Trusov Lev Iljitch, Fedotov Vladimir Petrovitch, Novikov Viktor Ivanovitch
  • Patent number: 5804051
    Abstract: An electrodepositable composition is provided comprising: (a) active hydrogen-containing, cationic salt group-containing resin electrodepositable on a cathode; (b) at least one at least partially capped polyisocyanate curing agent; (c) at least one metal-containing catalyst; and (d) at least one material having the following general formula: ##STR1## wherein R.sub.1 is alkyl or substituted alkyl having 1 to 18 carbon atoms or aryl or substituted aryl; and R.sub.2 is hydrogen, alkyl or substituted alkyl having 1 to 18 carbon atoms or aryl or substituted aryl. The composition can demonstrate enhanced corrosion resistance at low metal catalyst levels without loss of cured film properties or appearance when electrodeposited and cured over conductive substrates.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: September 8, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Donald W. Boyd, Robert R. Zwack, Raphael O. Kollah, Gregory J. McCollum
  • Patent number: 5760107
    Abstract: An electrodepositable composition is provided comprising:(A) a non-gelled cationic resin which is derived from a polyepoxide and which contains in the resin molecule cationic salt groups and active hydrogen groups selected from aliphatic hydroxyl and primary and secondary amino; and present as a separate component(B) a fully capped polyisocyanate curing agent containing substantially no free isocyanate groups. The electrodepositable composition contains from about 0.02 to 1.0 milliequivalents phenolic hydroxyl groups per gram of resin solids, and from about 0.1 to 2.0 milliequivalents beta-hydroxy ester groups per gram of resin solids. The composition provides excellent corrosion resistance when electrodeposited over steel substrates, and does not require lead in the formulation nor the use of a conventional chrome rinse for the steel substrate pretreatment before electrodeposition.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: June 2, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Joseph T. Valko, Philippe Faucher, Richard F. Karabin, Thomas C. Moriarity, V. Eswarakrishnan, Ellor J. Van Buskirk, Gregory J. McCollum, Raphael O. Kollah
  • Patent number: 5759372
    Abstract: The invention relates to aqueous electrodeposition coating materials comprising cathodically depositable synthetic resins and further comprising a reaction product (A) and a polymerization initiator (B) which forms free radicals, wherein the cathodically depositable synthetic resin is different from the reaction product (A), and the reaction product (A) is prepared by reacting(a) a polyisocyanate or a mixture of polyisocyanates with(b) an organic compound which contains both at least one ethylenically unsaturated double bond and at least one active hydrogen atom per molecule, or a mixture of such organic compounds, and(c) an organic compound which contains both at least one active hydrogen atom and at least one tertiary amino group and/or at least one ketimine and/or at least one aldimine group per molecule, or a mixture of such organic compounds, and if desired(d) an organic compound which is different from (b) and (c) and contains at least one active hydrogen atom per molecule, or a mixture of such organic
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: June 2, 1998
    Assignee: BASF Lacke + Farben AG
    Inventors: Hardy Reuter, Gunther Ott, Walter Jouck
  • Patent number: 5747727
    Abstract: A metal oxide layer is provided around a thermocouple element. The metal oxide layer is formed by preparing a sol, in which particulates of a metal oxide are dispersed, by a sol-gel method, dipping the thermocouple element in this sol, energizing the thermocouple element as a cathode for bonding the precursor particulates of the metal oxide thereto, and heat treating the same. The thermocouple according to the present invention is compact with a thin insulating layer, excellent in flexibility, and provides no gas adsorption source.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: May 5, 1998
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazuo Sawada, Shinji Inazawa, Kouichi Yamada
  • Patent number: 5728283
    Abstract: The invention relates to aqueous eletrocoating ?sic! compositions containing cathodically depositable synthetic resins, which electrocoating compositions are characterized in that they contain polymer microparticles which have a particle size of 0.01 to 10 .mu.m and are preparable by reacting(a) a polyisocyanate or a mixture of polyisocyanates with(b) an organic compound containing not only at least one ethylenically unsaturated double bond but also at least one active hydrogen atom per molecule or a mixture of such organic compounds and(c) an organic compound containing not only at least one active hydrogen atom but also at least one tertiary amino group and/or at least one ketimine group and/or at least one aldimine group per molecule or a mixture of such organic compounds and, if desired,(d) an organic compound other than (b) and (c) containing at least one active hydrogen atom per molecule or a mixture of such organic compounds.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: March 17, 1998
    Assignee: BASF Lacke + Farben, AG
    Inventors: Hardy Reuter, Gunther Ott, Walter Jouck
  • Patent number: 5688391
    Abstract: A method for manufacturing ink jet printheads and the product printheads derived therefrom. The method involves the electrodeposition passivation of ink channels in ink jet printheads.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: November 18, 1997
    Assignee: MicroFab Technologies, Inc.
    Inventor: Donald J. Hayes
  • Patent number: 5645702
    Abstract: A miniaturized column analytical apparatus having a miniaturized column device containing a body with an elongate separation compartment is provided. Two or more sets of spaced apart antennas are positioned along the elongate separation compartment. The elongate separation compartment has first and second opposing sides along its elongate dimension. Each set of antenna contains a plurality of antennas. One antenna from each set is associated with at least one antenna from each of the other sets to form repeating sequences of antennas along the separation compartment on the opposing sides of the separation compartment. Each set of the antennas is associated with a different oscillating electrical potential to provide a plurality of oscillating electric fields along the elongate separation compartment to draw a target substance along the elongate separation compartment toward an exit end of the separation compartment. The detector can detect a target substance passing out of the elongate separation compartment.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 8, 1997
    Assignee: Hewlett-Packard Company
    Inventors: Klaus E. Witt, Patrick Kaltenbach, Fritz Bek, Sally A. Swedberg, Laurie S. Mittelstadt
  • Patent number: 5633297
    Abstract: An electrodepositable composition is provided comprising: a non-gelled, cationic, water-dispersible resin, electrodepositable on a cathode, which is derived from a polyepoxide and which contains in the resin molecule cationic salt groups, beta-hydroxy ester groups, active hydrogen groups including free phenolic hydroxyl groups, and capped isocyanate groups. The composition provides excellent corrosion resistance when electrodeposited over steel substrates, and does not require lead in the formulation nor the use of a conventional chrome rinse for the steel substrate during pretreatment before electrodeposition.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: May 27, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Joseph T. Valko, Richard F. Karabin
  • Patent number: 5630922
    Abstract: An electrodepositable composition is provided comprising (a) an active hydrogen-containing, cationic salt group-containing resin electrodepositable on a cathode; (b) a capped polyisocyanate curing agent; and (c) a diorganotin dicarboxylate; wherein the dicarboxylate is at least one long chain carboxylate having from 14 to 22 carbon atoms and the diorganotin dicarboxylate is present in the electrodepositable composition in an amount of at least 0.01 percent by weight tin based on weight of total solids of the electrodepositable composition. The composition provides improved storage stability without precipitation of dibutyltin oxide, and when electrodeposited over conductive substrates, there is no loss of cure response and appearance properties.
    Type: Grant
    Filed: December 26, 1995
    Date of Patent: May 20, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Venkatachalam Eswarakrishnan, Robert R. Zwack, Gregory J. McCollum, Raphael O. Kollah, Steven R. Zawacky
  • Patent number: 5556527
    Abstract: The present invention provides a process for forming a multilayer film, which comprises: applying a cationic electrocoating (A) and an intermediate coating (B) in this order, followed by heat-curing, applying thereon a coloring base coating (C) capable of forming a colored film having a value of N 7 to N 9 in Munsell's color system, applying, without curing the coloring base coating (C) applied above, an iridescent base coating (D) containing a scaly mica powder coated with titanium oxide, followed by preliminary drying at 50.degree.-100.degree. C., and applying a clear coating (E), followed by heating to subject the films of the coatings (C), (D) and (E) simultaneously to crosslinking and curing, wherein the coloring base coating (C) and the iridescent base coating (D) are each a thermosetting aqueous coating containing, as vehicle components, an acrylic resin emulsion (a), a urethane resin emulsion (b) and a crosslinking agent (c).
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: September 17, 1996
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Kansai Paint Co., Ltd.
    Inventors: Kazuo Igarashi, Kengo Takano, Toshiharu Morita, Hiroaki Saito, Yukio Hashizume, Tokio Suzuki, Hirohisa Tashiro, Mituru Muramoto, Katsunori Sato
  • Patent number: 5556518
    Abstract: A method for forming a coating on an electrically conductive surface is discloses. The method comprises the steps of immersing the surface in a bath comprising an electrodepositable mixture of an intrinsically insulative polymer and an organic acid salt of an intrinsically conductive polymer, applying a voltage between an electrode and the surface in the bath to deposit a polymeric coating of the mixture on the surface, and curing the polymeric coating. The polymeric coating can be made electrically conductive by the additional step of immersing the polymeric coating in an organic acid after the deposition and before curing. A multilayered coating can be provided after curing the electrically conductive polymeric coating, by depositing a second or subsequent coating of an electrodepositable organic resin from an aqueous bath containing the resin on application of a voltage between an electrode and the electrically conductive polymeric subcoating in the bath.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: September 17, 1996
    Inventors: Patrick J. Kinlen, Robert F. W. Jansson
  • Patent number: 5507928
    Abstract: Process for the production of multi-layer lacquer coatings by electrophoretic deposition of a first coating layer of a first, aqueous coating composition onto an electrically conductive substrate, application of a second coating layer based on a second, powder coating composition and joint baking of the coating layers so obtained, which process is characterised in that a powder coating composition is used for the second coating layer which is based on binders which contain no diene-based polymer units, wherein the coating composition is selected such that the minimum baking temperature range of the second coating layer is above that of the first coating layer or overlaps with this range in such a manner that the lower limit of the range of the second coating layer is above the lower limit of the range of the first coating layer.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: April 16, 1996
    Assignee: Herberts GmbH
    Inventors: Reiner Bohmert, Matthias Kimpel, Klausjorg Klein, Manfred Stein