Patents Represented by Attorney George D. Morris

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  • Method for preparing N-benzyloxycarbonyl amino acids containing additional functionality
    Patent number: 4484001
    Abstract: Crown ethers and silacrown ethers are employed as phase-transfer reagents in blocking primary amino functionality of alkali metal salts of amino acids with a benzyloxycarbonyl group.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: November 20, 1984
    Assignee: PPG Industries, Inc.
    Inventor: James A. Krogh
  • Unsaturated 1,3-dioxolane stabilized with aliphatic aldehyde hydrazone
    Patent number: 4466903
    Abstract: 2-Alkylidene-1,3-dioxolanes and 2-(1-alkylalkylidene)-1,3-dioxolanes are employed as acid acceptors in methylchloroform, trichloroethylene or mixtures thereof. The preferred acid acceptor is 2-methylene-1,3-dioxolane.In another aspect of the invention, aliphatic aldehyde hydrazone is employed to stabilize 2-alkylidene-1,3-dioxolane and 2-(1-alkylalkylidene)-1,3-dioxolane. The preferred aliphatic aldehyde hydrazone is acetaldehyde dimethylhydrazone.
    Type: Grant
    Filed: June 16, 1983
    Date of Patent: August 21, 1984
    Assignee: PPG Industries, Inc.
    Inventor: Steven E. Pamer
  • Electrolytic cell, permionic membrane, and method of electrolysis
    Patent number: 4457815
    Abstract: Disclosed is a permionic membrane having a porous film of surface and electrocatalyst on at least one surface thereof. Also disclosed is an electrolytic cell with the permionic membrane, an electrolytic process utilizing the permionic membrane, and an electrolytic process utilizing the electrolytic cell.
    Type: Grant
    Filed: December 9, 1981
    Date of Patent: July 3, 1984
    Assignee: PPG Industries, Inc.
    Inventor: Mark Levin
  • Electrostatic spray gun having increased surface area from which fluid particles can be formed
    Patent number: 4440349
    Abstract: Disclosed is a spray gun having a gas nozzle and a fluid nozzle, each of said nozzles being in cooperative spatial relationship with the other to cause a fluid stream issuing from the fluid nozzle to be atomized and sprayed as fluid particles by gas issuing from the gas nozzle. In a preferred embodiment the fluid nozzle orifice has therein an axially disposed rod to increase surface area from which said fluid particles can be formed, said rod being electrically grounded at least during fluid issue from the nozzle. The spray gun additionally has an induction charging electrode disposed adjacent the gas and fluid nozzles, said electrode defining a charging zone wherein an electrostatic charge is imparted to atomized electrically-chargeable fluid particles.
    Type: Grant
    Filed: September 17, 1979
    Date of Patent: April 3, 1984
    Assignee: PPG Industries, Inc.
    Inventors: James E. Sickles, Themistocles C. Anestos
  • Corrosion inhibited solvent compositions
    Patent number: 4418231
    Abstract: 2-Alkylidene-1,3-dioxolanes and 2-(1-alkylalkylidene)-1,3-dioxolanes are employed as acid acceptors in methylchloroform, trichloroethylene or mixtures thereof. The preferred acid acceptor is 2-methylene-1,3-dioxolane.In another aspect of the invention, aliphatic aldehyde hydrazone is employed to stabilize 2-alkylidene-1,3-dioxolane and 2-(1-alkylalkylidene)-1,3-dioxolane. The preferred aliphatic aldehyde hydrazone is acetaldehyde dimethylhydrazone.
    Type: Grant
    Filed: August 7, 1981
    Date of Patent: November 29, 1983
    Assignee: PPG Industries, Inc.
    Inventor: Steven E. Pamer
  • Polyhalophthalimidoalkyl-functional carbonates and haloformates
    Patent number: 4414396
    Abstract: Polyhalophthalimidoalkyl-functional carbonates may be employed as fire retardant additives to polymers. Examples of such carbonates are 2-(tetrabromophthalimido)ethyl 2,4,6-tribromophenyl carbonate, 2-(tetrabromophthalimido)ethyl pentabromophenyl carbonate and bis[2-(tetrabromophthalimido)ethyl] carbonate.Polyhalophthalimidoalkyl haloformates, N-(hydroxyalkyl)-polyhalophthalimides, and 2-(hydroxyalkylcarbamyl)-polyhalobenzoic acids are useful as intermediates in the preparation of the carbonates.
    Type: Grant
    Filed: January 7, 1982
    Date of Patent: November 8, 1983
    Assignee: PPG Industries, Inc.
    Inventor: Nicodemus E. Boyer
  • Process for halogenation of butadiene polymer in the presence of aluminum-containing material
    Patent number: 4405759
    Abstract: Butadiene polymer dissolved in solvent is reacted with chlorine, bromine or a mixture thereof in the presence of aluminum-containing material to produce halogenated butadiene polymer. The presence of the aluminum-containing material reduces crosslinking of the halogenated butadiene polymer product. Exemplary aluminum-containing materials are trialkyl aluminum, dialkyl aluminum halide, alkyl aluminum dihalide, alkyl aluminum sesquihalide, aluminum trihalide and their mixtures. The preferred butadiene polymer starting material is polybutadiene having at least about 90 mole percent cis-1,4-configuration.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: September 20, 1983
    Assignee: PPG Industries, Inc.
    Inventor: Asvinkumar N. Jagtap
  • Halogenation of butadiene polymers in mixed solvents
    Patent number: 4381374
    Abstract: Polybutadiene having high cis-1,4-configuration and dissolved in substantially anhydrous liquid organic solvent is reacted with chlorine, bromine or a mixture thereof. The solvent consists essentially of a mixture of one or more perhalogenated alkanes and one or more partially halogenated alkanes and fine particles of substantially thermoplastic halogenated polybutadiene precipitate from the solvent. The fine particles are separated from the bulk of the solvent.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: April 26, 1983
    Assignee: PPG Industries, Inc.
    Inventor: Patrick E. Hillman
  • Process for producing substantially linear carbonate polymer
    Patent number: 4365055
    Abstract: In the preparation of a substantially linear carbonate polymer wherein carbonic dihalide is introduced to a substantially anhydrous solution comprising at least one substituted or unsubstituted 1,3-propanediol, the coproduction of cyclic carbonate is reduced by the presence in the solution of a catalytic amount of nitrogen-containing, hydrohalide salt-forming, thermally regenerable organic catalyst. The preferred carbonic dihalide is phosgene and the preferred catalyst is pyridine.
    Type: Grant
    Filed: June 24, 1981
    Date of Patent: December 21, 1982
    Assignee: PPG Industries, Inc.
    Inventor: Darold L. Madigan
  • Method for mechanically subdividing rubbery, tacky polymer
    Patent number: 4357444
    Abstract: Rubbery, tacky polymer is mechanically subdivided in the presence of fine particles of substantially thermoplastic halogenated polymer.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: November 2, 1982
    Assignee: PPG Industries, Inc.
    Inventor: Patrick E. Hillman
  • Process for making colloidal sols of antimony pentoxide in an aqueous medium
    Patent number: 4348301
    Abstract: A colloidal dispersion of hydrous antimony pentoxide particles is made by a process which comprises introducing a particulate antimony component selected from the group consisting of antimony metal, oxidizable antimony oxides and mixtures thereof into an essentially aqueous medium and contacting said antimony component with hydrogen peroxide at a temperature of from about 0.degree. C. to about the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of the antimony component to colloidal particles of hydrous antimony pentoxide.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: September 7, 1982
    Assignee: PPG Industries, Inc.
    Inventors: Charles E. Crompton, Abdulla M. Z. Kazi, Inderjit S. Soni
  • Electrostatic spray coating apparatus
    Patent number: 4347984
    Abstract: An electrostatic spray coating apparatus is disclosed which comprises a spray nozzle containing both air and liquid discharge ports, an inductive charging device or charging electrode located exteriorly of the discharge ports and attached to the spray nozzle, and electrical connections for applying an electric potential to the inductive charging device. The inductive charging device or charging electrode creates a charging zone, and is preferably positioned so that ambient air is mixed with air and fluid exiting from the discharge ports within the charging zone.
    Type: Grant
    Filed: July 12, 1977
    Date of Patent: September 7, 1982
    Assignee: PPG Industries, Inc.
    Inventor: James E. Sickles
  • Internal-atomizing spray head with secondary annulus suitable for use with induction charging electrode
    Patent number: 4343433
    Abstract: A spray head for use with conventional air-atomizing spray equipment is disclosed which has spray-forming means that includes a secondary atomization annulus which provides improved atomization of liquid materials and which is especially suitable for spray devices having electrostatic induction charging means. The secondry annulus minimizes deposition on the spray head of particles electrically charged with a polarity opposite that of components of the spray head and provides re-atomization of sprayable material which collects on the walls of the nozzle.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: August 10, 1982
    Assignee: PPG Industries, Inc.
    Inventor: James E. Sickles
  • Purification and recovery of ethylene dichloride
    Patent number: 4333799
    Abstract: Ethylene dichloride is separated from unsaturated organic impurities such as trichloroethylene and benzene by extractive distillation in the presence of a high boiling chloroalkene solvent, such as perchloroethylene.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: June 8, 1982
    Assignee: PPG Industries, Inc.
    Inventor: Aurelio M. Crico
  • Stabilization of methylchloroform
    Patent number: 4326924
    Abstract: Methylchloroform undergoing purification distillation is stabilized against decomposition by conducting the distillation in the presence of polyalkylene glycol having an average molecular weight greater than 150.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: April 27, 1982
    Assignee: PPG Industries, Inc.
    Inventor: Frances M. Cummings
  • Application of liquid coating material
    Patent number: 4313968
    Abstract: A method of applying a coating composition, which preferably has a high solids content, to a workpiece. The method is one wherein a coating composition is atomized into liquid particles, an electrical charge is imparted with an induction charging electrode means on the particles substantially simultaneously with their formation, and the charged particles are directed to an electrically-receptive workpiece, and includes the improvement comprising heating the coating composition to adjust its conductivity and to enhance the induction charging of the particles formed from the heated coating composition. In a preferred embodiment, the charged particles are cooled before they reach the workpiece.
    Type: Grant
    Filed: November 14, 1979
    Date of Patent: February 2, 1982
    Assignee: PPG Industries, Inc.
    Inventors: James E. Sickles, Wen-Hsuan Chang
  • Stable aqueous dispersions of particles of vinylidene fluoride polymer
    Patent number: 4309328
    Abstract: Coating compositions based on stable aqueous dispersions of particles of vinylidene fluoride polymer are prepared by bringing into admixture unstabilized particles of vinylidene fluoride polymer, liquid organic active solvent for the vinylidene fluoride polymer, liquid nonsolvent, which may be liquid organic nonsolvent, water or a combination of liquid organic nonsolvent and water, and, if not present in the liquid nonsolvent, water. The mixing is conducted such that the particles of vinylidene fluoride polymer are wetted by the dispersion vehicle, yet the particles are not substantially solubilized by the active solvent.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: January 5, 1982
    Assignee: PPG Industries, Inc.
    Inventors: Dennis W. Carson, Ralph C. Gray, Glenn W. Luckock
  • Semisolid water-based coating compositions
    Patent number: 4304693
    Abstract: This invention relates to coating compositions which are "solid" prior to application, yet, which when applied to a substrate, flow and level in a manner similar to conventional coating compositions.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: December 8, 1981
    Assignee: PPG Industries, Inc.
    Inventors: William G. Boberski, James E. Jones, Rodger G. Temple
  • Sulfonate-containing polymer
    Patent number: 4299743
    Abstract: Polymer containing a plurality of organic sulfonate-containing groups is capable of being dissolved or dispersed in a liquid medium. The polymer is useful as a pigment dispersant and as film-forming polymer in coating compositions.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: November 10, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Percy E. Pierce, Karl F. Schimmel
  • Amide-modified urethane acrylate radiation curable compounds and coating compositions and methods of making same
    Patent number: RE30772
    Abstract: Radiation curable compounds are disclosed comprising an amide moiety, a urethane moiety and an ethylenically unsaturated functional group, typically an acrylate functional group. The compounds comprise the reaction products of an amide-containing compound having at least one hydroxy functional group, a polyisocyanate and a polyfunctional compound having a hydroxy functional group reactive with an isocyanato group of the polyisocyanate, which polyfunctional compound provides an ethylenic functional group in the reaction product. Coating compositions containing these radiation curable reaction products cure at relatively high rates to form films having high abrasion resistance and improved tensile strength and elongation properties as compared to conventional urethane acrylate coating compositions.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: October 13, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Charles B. Friedlander, Gerald W. Gruber, Rostyslaw Dowbenko