Patents Represented by Attorney George D. Morris

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  • Process for producing 2-oxo-1,3-dibenzyl-4,5-cis-imidazolidinedicarboxylic acid
    Patent number: 5151525
    Abstract: Alkali metal salt of meso-2,3-bis(benzylamino)succinic acid, phosgene, and alkali metal hydroxide are reacted under alkaline conditions and in the presence of water and anisole in a multi-phase system to form a multi-phase mixture comprising: (1) a liquid aqueous phase having a pH of at least about 7.5 and comprising an aqueous solution of alkali metal salt of 2-oxo-1,3-dibenzyl-4,5-cis-imidazolidinedicarboxylic acid, and (2) a liquid organic phase. The aqueous solution is acidified to precipitate 2-oxo-1,3-dibenzyl-4,5-cis-imidazolidinedicarboxylic acid.
    Type: Grant
    Filed: June 18, 1991
    Date of Patent: September 29, 1992
    Assignee: PPG Industries, Inc.
    Inventor: John J. Seiter
  • Chlorinated benzenes
    Patent number: 5149892
    Abstract: Benzene or a chlorinated benzene feedstock compound represented by the formula C.sub.6 H.sub.6-x Cl.sub.x is chlorinated in the rectifying zone of a catalytic distillation reactor to produce a chlorinated benzene product compound represented by the formula C.sub.6 H.sub.5-x Cl.sub.x+1, where x is an integer in the range of from 0 to 5.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: September 22, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Robert E. Feathers, J. Douglas Mansell
  • Method for purifying waste water using surface modified silica
    Patent number: 5137639
    Abstract: Disclosed is a process for preparing surface modified silica sorption agent suitable for purifying contaminated aqueous liquid, the sorption agent comprising amorphous, precipitated, silica having surface deposited thereon an organic quaternary ammonium compound.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: August 11, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Frederick F. Guzik, Suresh B. Damle, William W. Carlin
  • Intumescent flame retardant composition
    Patent number: 5130349
    Abstract: The water resistance of intumescent compositions is improved if the composition comprises at least one organotin derivative of a polyol. Organotin derivatives of polyols can be produced by reacting polyol with dialkyltin oxide or with dialkyltin dialkoxide.
    Type: Grant
    Filed: November 7, 1991
    Date of Patent: July 14, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Seetha Eswarakrishnan, Carol L. Knox, Suresh B. Damle
  • Abrasive article
    Patent number: 5114438
    Abstract: An abrasive article comprises abrasive particles bonded to microporous material wherein the microporous material comprises (a) a matrix consisting essentially of thermoplastic organic polymer, (b) a large proportion of finely divided water-insoluble siliceous filler, and (c) a large void volume.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: May 19, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Dennis D. Leatherman, James J. McGinley, Daniel E. Adams, George A. Brons
  • Surface-moldified ammonium polyphosphate
    Patent number: 5109037
    Abstract: The water leaching of ammonium polyphosphate from compositions comprising organic polymer and particles of ammonium polyphosphate is reduced if the ammonium polyphosphate is surface-modified with copolymer of vinylpyrrolidone and comonomer selected from the group consisting of .alpha.-olefin containing from about 4 to about 50 carbon atoms, styrene, styrene substituted on the ring with at least one alkyl group containing from 1 to about 12 carbon atoms, and mixtures thereof.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: April 28, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Paritosh M. Chakrabarti, Kenneth J. Sienkowski
  • Antistatic composition
    Patent number: 5098939
    Abstract: Diethanolamine and triglyceride are reacted to produce a reaction mixture comprising diethanol amide of monocarboxylic acid and hydroxy-functional glyceride. The reaction mixture is useful as an antistatic composition for formulating with polymers, especially polyolefins.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: March 24, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Kenneth J. Sienkowski, Paritosh M. Chakrabarti
  • Reinforced precipitated silica
    Patent number: 5094829
    Abstract: Reinforced precipitated silica having, on a coating-free and impregnant-free basis, a surface area of from about 220 to about 340 square meters per gram, a pore diameter at the maximum of the volume pore size distribution function of from about 9 to about 20 nanometers, and a total intruded volume of from about 2.6 to about 4.4 cubic centimeters per gram, is produced by a process wherein precipitated silica is heavily reinforced using a multiplicity of precipitation and aging steps.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: March 10, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Thomas G. Krivak, Timothy A. Okel, Melvin P. Wagner
  • Steam reactivation of zeolite catalyst used in producing para-dichlorobenzene
    Patent number: 5093293
    Abstract: As zeolite L is used as catalyst for the chlorination of benzene, chlorobenzene, ortho-dichlorobenzene, and/or meta-dichlorobenzene, its catalytic activity diminishes. Zeolite L which has been used for such chlorinations may be reactivated by contact with steam.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: March 3, 1992
    Assignee: PPG Industries, Inc.
    Inventor: Eugene Laukonen
  • Quaternary ammonium salt surface-modified ammonium polyphosphate
    Patent number: 5071901
    Abstract: The water leaching of ammonium polyphosphate from compositions comprising organic polymer and particles of ammonium polyphosphate is reduced if the ammonium polyphosphate is surface-modified with quaternary ammonium salt cationic surfactant.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: December 10, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Paritosh M. Chakrabarti, Kenneth J. Sienkowski
  • Process of producing an active agent delivery device
    Patent number: 5071645
    Abstract: An active agent delivery device comprises (a) microporous material comprising a matrix consisting essentially of linear ultrahigh molecular weight polyolefin, a large proportion of finely divided water-insoluble filler of which at least about 50 percent by weight is siliceous, and interconnecting pores; and (b) a releasable active agent or precursor thereof associated with at least a portion of the filler.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: December 10, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Harlan B. Johnson, Linda P. Reinhardt
  • Surface sizing composition
    Patent number: 5059675
    Abstract: Disclosed are compositions useful as surface coatings for nonwoven substrates which compositions are reaction products of a melamine formaldehyde compound, long chain saturated alcohols and long chain saturated or unsaturated polyethoxylated alcohols. The invention compositions when used to surface size paper impart oil, water and polar solvent resistance thereto. The compositions may be used alone or as substantial replacements for anionic or non-ionic fluorocarbon based surface sizes that are typically used to impart oil resistance to paper.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: October 22, 1991
    Assignee: PPG Industries, Inc.
    Inventors: William W. Carlin, Sai H. Hui, John D. Mansell
  • Method for isomerizing 1,2-dichloroethene
    Patent number: 5051536
    Abstract: One stereoisomer of 1,2-dichloroethene is isomerized to the other stereoisomer in the liquid phase and in the presence of free radical initiator.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: September 24, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Earl M. Gorton, John D. Driskill, Randall M. Hall
  • Electrically conductive article
    Patent number: 5047283
    Abstract: Microporous material comprising (1) a matrix consisting essentially of thermoplastic organic polymer, (2) a large proportion of finely divided water-insoluble siliceous filler, and (3) interconnecting pores is coated with electrically conductive coating and/or printed with electrically conductive printing ink. The resulting products have many uses as electrically conductive articles, including electromagnetic interference shields and printed circuit boards. Three-dimensional printed circuit boards are disclosed.
    Type: Grant
    Filed: September 20, 1989
    Date of Patent: September 10, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Dennis D. Leatherman, Kee V. Sin, James A. Russell
  • Active agent delivery device
    Patent number: 5035886
    Abstract: An active agent delivery device comprises (a) microporous material comprising a matrix consisting essentially of linear ultrahigh molecular weight polyolefin, a large proportion of finely divided water-insoluble filler of which at least about 50 percent by weight is siliceous, and interconnecting pores; and (b) a releasable active agent or precursor thereof associated with at least a portion of the filler.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: July 30, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Paritosh M. Chakrabarti, Harlan B. Johnson, Malcolm Korach, Dennis D. Leatherman, Robert R. Simmons
  • Microporous material having a coating of hydrophobic polymer
    Patent number: 5032450
    Abstract: A coated article comprises a substantially continuous, moisture vapor permeable coating of hydrophobic polymer joined to one side of a sheet of microporous material comprises a matrix consisting essentially of linear ultrahigh molecular weight polyolefin, a large proportion of finely divided, water-insoluble siliceous filler, and interconnecting pores.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: July 16, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Thomas Rechlicz, Dennis D. Leatherman
  • Cationic surface sizing emulsion
    Patent number: 5030678
    Abstract: Disclosed are cationic aqueous emulsions containing (a) sizing composition comprising the reaction product of melamine formaldehyde compound, long chain saturated alcohol and long chain saturated or unsaturated polyethoxylated alcohol; and (b) cationic surfactant. The emulsions when used to surface size paper impart improved oil, water and polar solvent resistance thereto. The emulsions may be used alone or as substantial replacements for anionic or non-ionic fluorocarbon based emulsions that are typically used to impart oil resistance to paper.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: July 9, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Sai H. Hui, Mean-Jeng Hou
  • Polyol(allyl carbonate) compositions and polymerizates prepared therefrom
    Patent number: 5017666
    Abstract: Polyol (allyl carbonate), e.g., diethylene glycol bis(allyl carbonate), are polymerized in solution, i.e., in an organic solvent, until from about 20 to 50 percent of the allylic carbon-carbon linkages are consumed. The solvent is then removed yielding a product that is a gel-free, syrupy viscous liquid of unpolymerized monomer and polymer. This liquid polymer can be polymerized to a hard, transparent material with less shrinkage. Also described is the addition of mono- or polyfunctional acrylates to the liquid polymer to product a polymerizable mixture that can be cured quickly with the addition of a free-radical initiator.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: May 21, 1991
    Assignee: PPG Industries, Inc.
    Inventors: John C. Crano, Ronald L. Haynes
  • Stabilized 1,1,1-trichloroethane compositions
    Patent number: 4992604
    Abstract: 1,1,1-Trichloroethane (viz., methylchloroform) is stabilized with from about 2 to about 4 percent by weight 1,3-dioxolane, from about 0.25 to about 0.5 percent by weight butylene oxide, from about 0.25 to about 2 percent by weight nitromethane, from about 0.2 to about 0.75 percent by weight 1-nitropropane, from about 0.75 to about 2 percent by weight secondary butanol, and from 0 to about 100 parts per million by weight acetaldehyde dimethylhydrazone.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: February 12, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Donald A. Reich, Catherine C. Doyen, Stephanie J. Oates
  • Process for producing para-dichlorobenzene
    Patent number: 4990706
    Abstract: As zeolite L is used as catalyst for the chlorination of benzene, chlorobenzene, ortho-dichlorobenzene, and/or meta-dichlorobenzene, its catalytic activity diminishes. Zeolite L which has been used for such chlorinations may be reactivated by contact with steam.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: February 5, 1991
    Assignee: PPG Industries, Inc.
    Inventor: Eugene Laukonen