Patents Represented by Attorney Dennis G. Millman

Find this attorney in the Justia Lawyer Directory

  • Isophorone-free fluorocarbon coating composition
    Patent number: 5281444
    Abstract: A coating composition containing fluoropolymer adapted for roll coating is provided with a solvent system that is free of isophorone. The solvent system comprises an ester of an aromatic acid, a high molecular weight ketone, a high molecular weight alcohol, a glycol ether ester, and a hydrocarbon solvent having a high evaporation rate.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: January 25, 1994
    Assignee: PPG Industries, Inc.
    Inventor: Robin L. Hunt
  • Photoimageable electrodepositable photoresist composition for producing non-tacky films
    Patent number: 5268256
    Abstract: An electrodepositable photoresist composition for producing non-tacky films on an electroconductive substrate comprises an aqueous dispersion of a water-dispersible photosensitive ionic polymeric material and a polyalkylene oxide-modified polysiloxane sufficient to give slip and blocking properties that enables direct placement of a photomask on the resultant dehydrated film. The composition also preferably contains a nonionic unsaturated material and a photoinitiator.
    Type: Grant
    Filed: January 6, 1992
    Date of Patent: December 7, 1993
    Assignee: PPG Industries, Inc.
    Inventors: Jonathan D. Goetz, Charles F. Kahle, II
  • Water based coating composition with improved process resistance
    Patent number: 5266628
    Abstract: A coating composition which may be water based and which is adapted for metallic substrates is disclosed, having: (1) binder resin comprising acrylic polymer having carboxy functionality, and (2) a curing agent comprising hydroxyalkylamide, wherein the ratio of hydroxy groups in the hydroxyalkylamide to carboxy groups in the binder resin is less than 0.5:1, preferably less than 0.4 to 1, and most preferably less than 0.35 to 1. The composition has been found to yield films exhibiting good resistance to water at high temperatures, thereby rendering them particularly suitable for use on metal food and beverage containers that are subjected to sterilization or pasteurization processes.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: November 30, 1993
    Assignee: PPG Industries, Inc.
    Inventors: William A. Essary, Michael T. List
  • Grafted, thermoplastic, waterborne polymer and coating composition
    Patent number: 5252669
    Abstract: A water reducible resin for use in a coating composition is produced by grafting in organic solvent a thermoplastic polymer onto a thermosetting polymer that has been copolymerized with acid group-containing monomers to render the resultant polymer water soluble. Thermoplastic polymer is also grafted onto a phosphatized polyepoxide for the sake of adhesion of a coating to a substrate. A film formed from a waterborne coating composition containing the grafted polymers as a binder has both the toughness properties characteristic of a thermoplastic and the flexibility properties of a thermosetting resin.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: October 12, 1993
    Assignee: PPG Industries, Inc.
    Inventors: Rudolf Maska, Marvin T. Tetenbaum, James R. Bodwell, David C. Kapp
  • Water-borne treatment compositions for porous substrates
    Patent number: 5228905
    Abstract: A treating composition for a porous substrate such as wood is provided in the form of an oil-in-water dispersion comprising a dispersed phase of an organic solvent in relatively low amounts to reduce V.O.C., a water repellent, and a stabilizing surfactant. Optionally, preservatives and resins may be included. Penetration with relatively low organic solvent content is achieved by producing a dispersion having a maximum mean particle size of 3000 .ANG.. Also disclosed is a method of preparing the dispersion with a microfluidizer.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: July 20, 1993
    Assignee: PPG Industries, Inc.
    Inventors: John F. Grunewalder, Mark A. Voelker
  • Powder coating of particulate thermoset resin and olefin-maleic anhydride copolymer
    Patent number: 5229458
    Abstract: Powder coating compositions are provided including a thermosetting or thermoplastic particulate resinous material and as a flow modifier, a copolymer of maleic anhydride or a substituted maleic anhydride and a copolymerizable material selected from among cycloalkenes and aliphatic olefins, with said copolymer optionally chemically modified with a primary amine or alcohol. Such flow modifiers can provide the cured coating with recoat adhesion and crater control.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: July 20, 1993
    Assignee: PPG Industries, Inc.
    Inventors: Karl F. Schimmel, Paul H. Pettit, Jr.
  • Temporary protective coating compositions
    Patent number: 5229450
    Abstract: A formable, weldable, temporary protective coating for use on metals, said coating comprising a base-neutralized acid or base-functional copolymer.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: July 20, 1993
    Assignee: PPG Industries, Inc.
    Inventors: Ellor J. Van Buskirk, Rudolf Maska
  • High throw power electrodeposition system
    Patent number: 5202383
    Abstract: A high throw power electrodeposition system with improved rupture voltage is disclosed. The electrodepositable coating includes an active hydrogen-containing ionic resin and a gamma hydroxy urethane curing agent, such as a curing agent having the structural feature: ##STR1## The gamma hydroxy urethane curing agent can be prepared by reacting a polyisocyanate with a 1,3-polyol, and in particular with 2,2,4-trimethylpentane-1,3-diol. The composition can also include a curing agent having an alkyl urethane structural feature which can be the reaction product of a polyisocyanate and a blocking agent which is a fatty alcohol. A method for coating a conductive substrate with the above-described composition is also disclosed. The method includes passing an electric current between the conductive substrate serving as a first anode and a second anode to deposit the composition and the conductive substrate.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: April 13, 1993
    Assignee: PPG Industries, Inc.
    Inventors: Thomas C. Moriarity, Gregory J. McCollum, Robert R. Zwack, Matthew S. Scott, Steven R. Zawacky, Victor G. Corrigan
  • Coatings and method for coloring light-transmitting containers
    Patent number: 5182148
    Abstract: Disclosed herein is a coating composition for coloring transparent containers such as glass bottles, the composition comprising a combination of a film-former such as an acrylic resin, a metal-free polymeric dye reactive with the resin, an adhesion promoter (and optionally an ultraviolet light absorber). Also disclosed are a method of coating containers with such a composition and the resulting product.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: January 26, 1993
    Assignee: PPG Industries, Inc.
    Inventors: David C. Kapp, Russell E. Boston, Leland H. Carlblom, Mildred L. McKinley, Jess A. Kozma
  • Internally-curable water-based polyurethanes
    Patent number: 5095069
    Abstract: There is provided herein a stable water-based internally-crosslinkable unsaturated polyurethane composition containing unsaturated groups comprising an allyl group and another ethylenically unsaturated group that can react with the allyl group to form a solvent resistant coating.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: March 10, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Ronald R. Ambrose, David A. Diehl, Leon A. Perez
  • Coatings for the protection of products in light-transmitting containers
    Patent number: 5085903
    Abstract: Disclosed herein is a combination of a film-former, a metal-free, reactive colorant, ultraviolet light absorber and an adhesion promoter in an effective combination to substantially block transmission of light through a container in order to reduce lightstruck phenomenon.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: February 4, 1992
    Assignee: PPG Industries, Inc.
    Inventors: David C. Kapp, Russell E. Boston, Leland H. Carlblom, Mildred L. McKinley, Jess A. Kozma
  • Protective coating composition
    Patent number: 5081174
    Abstract: A formable, weldable, removable protective coating composition for use on metals, said coating comprising a combination of a base-neutralized acid-funtional copolymer and a wax lubricant, and further comprising a removability enhancing means such as phosphoric acid as an additive to the coating composition.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: January 14, 1992
    Assignee: PPG Industries, Inc.
    Inventor: Ellor J. VanBuskirk
  • Flat glass composition with improved melting and tempering properties
    Patent number: 5071796
    Abstract: A glass composition particularly suitable for flat glass manufacture having lower melting temperature, wide working range, improved surface durability, and enhanced tempering performance has the following composition:______________________________________ SiO.sub.2 66.0-69.1 weight percent Al.sub.2 O.sub.3 2.0-4.0 (SiO.sub.2 + Al.sub.2 O.sub.3) Less than 71.6 Na.sub.2 O 15-19 K.sub.2 O 0-2 (Na.sub.2 O + K.sub.2 O) 15-20 CaO 7.5-9 MgO 2-4 (CaO + MgO) 10.2-12.0 (CaO/MgO) 1.9-3.5 ______________________________________ .
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: December 10, 1991
    Assignee: PPG Industries, Inc.
    Inventors: James V. Jones, Stanley M. Ohlberg
  • Water reducible acrylic with superior dip and flow characteristics/low VOC
    Patent number: 5034454
    Abstract: Disclosed herein are crosslinkable water-dispersible acrylic copolymers which are prepared by free-radical initiated polymerization of ethylenically unsaturated monomers containing independently an active hydrogen group, a carboxyl group and a sulfonic group, wherein the polymerization is conducted in the presence of a wax. In combination with curing agents, the crosslinkable compositions are particularly useful in imparting markedly improved flow to dip coatings.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: July 23, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Rudolf Maska, David T. McKeough, David L. Holzinger, Susan D. Klejsmit
  • Lightly tinted glass compatible with wood tones
    Patent number: 5030593
    Abstract: A clear glass, with the substantial absence of color in transmittance, and with an attractive, bright, edge coloration compatible with wood tone surroundings is achieved in a glass having greater than 85 percent, preferably greater than 87 percent, luminous transmittance by minimizing the amount of iron oxide present in the glass and including very small amounts of selenium and (optionally) cobalt oxide. Various warm, wood tone compatible colors at the edge can be attained, including a "honey" color and almost neutral grays.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: July 9, 1991
    Assignee: PPG Industries, Inc.
    Inventor: Robert B. Heithoff
  • Highly transparent, edge colored glass
    Patent number: 5030594
    Abstract: A clear glass, with the substantial absence of color in transmittance, and with an attractive, bright, pure azure edge coloration is achieved in a glass having greater than 87 percent, preferably greater than 90 percent, luminous transmittance by using very small amounts of iron oxide as the sole essential colorant, with the ratio of iron in the ferrous state to total iron being at least 0.4.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: July 9, 1991
    Assignee: PPG Industries, Inc.
    Inventor: Robert B. Heithoff
  • Neutral gray, low transmittance, nickel-free glass
    Patent number: 5023210
    Abstract: A neutral gray, low transmittance (less than 20 percent luminous transmittance) soda-lime-silica glass has reduced solar energy transmittance, and in particular exceptionally low ultraviolet transmittance (less than 20 percent total solar ultraviolet transmittance) when provided with the following colorant constituents:Fe.sub.2 O.sub.3 (total iron) 0.4-0.7 percent by weightFeO 0.08-0.15Se 0.003-0.008CoO 0.003-0.025Cr.sub.2 O.sub.3 0.022-0.050The glass avoids the use of nickel compounds as colorants. Parameters for melting such a glass in a commercial furnace are also disclosed.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: June 11, 1991
    Assignee: PPG Industries, Inc.
    Inventors: John F. Krumwiede, Paul W. Kopp, Robert B. Heithoff
  • Compressed, wedged float glass bottom structure
    Patent number: 5007950
    Abstract: In a float glass chamber, particularly in a region operating at higher than usual temperatures, integrity of the bottom structure is sustained by employing wedge shaped bottom blocks that are maintained in compression by externally applied mechanical forces. The arrangement permits the use of a bi-layer bottom construction with a high alumina upper course and a clay bottom course.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: April 16, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Bert K. Krushinski, Robert A. Lawhon, Francis A. Radecki, Ronald L. Schwenninger
  • Melting glass with oxidation control and lowered emissions
    Patent number: 5006144
    Abstract: Premature dissociation of fining agent is avoided in a glass melting operation while controlling the final redox state of the product glass by initiating the melting process under relatively oxidizing conditions and subsequently altering the redox conditions to make the glass more reducing. A glass that is more reduced than usual can thereby be produced without sacrificing the ability to adequately fine the glass. For a given redox level, less fining agent need be used, thereby lowering emissions from the melting operation, because dissociation of the fining agent is delayed until a later stage of the process where the redox conditions are changed.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: April 9, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Leonard A. Knavish, William C. Harrell
  • Center biased stirring for improved glass homogenization
    Patent number: 5006145
    Abstract: Better homogenization of molten glass or the like is achieved by a row of stirrers when greater stirring force is provided in the center portion of the row. Preferred embodiments employ stirrers with blades, and stirrers in the center portion have longer blades than in outboard portions of the row.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: April 9, 1991
    Assignee: PPG Industries, Inc.
    Inventor: Sheldon R. Brinker