Patents Represented by Attorney Philip H. Von Neida

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  • Removal of NOx and SOx emissions form pickling lines for metal treatment
    Patent number: 5985223
    Abstract: A process for the removal of a high percentage of NOx and SOx from the gaseous effluent of a metal pickling operation comprising passing the effluent through an aqueous scrubber, treating the gaseous effluent from the scrubber with ozone, passing the effluent from the ozone treatment through a second aqueous scrubber thereby removing at least 80 vol % of the NOx and SOx present in the original effluent. The scrubbing solutions in both of the scrubbers preferably have a pH of from 7 to 14, more preferably 10 to 14. The scrubbing solutions in both scrubbers are caustic solutions containing sodium hydroxide or calcium hydroxide. The NOx and SOx in the scrubbers are converted into nitrate salts and sulfate salts, which are removed from the scrubbers.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: November 16, 1999
    Assignee: The Boc Group, Inc.
    Inventors: Neeraj Saxena, Robert Francis Workosky, Mark H. Anderson, Shuen-Cheng Hwang
  • Methods for determining the concentration of surfactants in hydrocarbons
    Patent number: 5981288
    Abstract: The present invention provides for a method and system for determining the concentration of a surfactant in a transparent hydrocarbon by performing the steps of adding a solid to the hydrocarbon; adding a second masking reagent to the hydrocarbon; mixing to form a dispersion; separating the dispersion from the mixture; and measuring the optical absorption of the dispersion.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: November 9, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Wiley L. Parker, Alan E. Goliaszewski, Nancy R. Calvert
  • Air purification process
    Patent number: 5980611
    Abstract: Substantially all of the carbon dioxide is removed from a gas containing up to about 1% by volume carbon dioxide by subjecting the gas to a pressure swing adsorption process using as the adsorbent a single layer of zeolite having a silicon to aluminum atomic ratio in the range of 1.5 to 70. The process is particularly suitable for removing substantially all carbon dioxide and water vapor contained in air prior to subjecting the air to cryogenic distillation.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: November 9, 1999
    Assignee: The BOC Group, Inc.
    Inventors: Ravi Kumar, Shuguang Deng, Martin Bulow, Frank Fitch, Adeola Florence Ojo, Craig S. Gittleman
  • Methods for reducing the concentration of amines in process and hydrocarbon fluids
    Patent number: 5976359
    Abstract: Disclosed is a method for reducing the concentration of amines in hydrocarbon fluids and process streams by generating therein a nitrosating agent. The nitrosating agent will react with the amines to form innocuous by-products under refinery process conditions.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: November 2, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Wiley L. Parker
  • Treatment of aqueous systems using a chemically modified tannin
    Patent number: 5977287
    Abstract: There is provided a composition comprising tannin containing hydroxyl groups which has been (a) chemically modified by reaction of at least one of said hydroxyl groups with at least one member selected from the group consisting of an esterification agent (e.g. acetic anhydride), etherification agent (e.g. dichloromethane or quaternary organic amine such as N-(3-chloro-2-hydroxypropyl) trimethyl ammonium chloride) to form the corresponding ester, or ether, through said hydroxyl group, and (b) derivatized. The chemically modified tannin is derivatized by reaction with aldehyhde (e.g. formaldehyde), or aldehyde and at least one member selected from the group consisting of ammonia and organic amine containing at least one primary or secondary nitrogen (e.g. cyclohexyl amine); said derivatized tannin being water soluble or dispersable at a pH below 7 and water insoluble at a pH above 7.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: November 2, 1999
    Assignee: BetzDearborn Inc.
    Inventors: David Brian Mitchell, Ralph Lemmel Minnis, Thomas Peter Curran, Steven M Deboo, John Arthur Kelly, Rashmi Patwardhan, Wun Ten Tai
  • Gas delivery system
    Patent number: 5954232
    Abstract: A gas delivery system includes a capsule for storing a propellant fluid, e.g. helium under pressure, e.g. between about 60 and 80 bar. The capsule is provided with a stopper having a stem formed with a frangible section. In use, mechanical means is employed to rupture the stem about the frangible section to release the fluid under high pressure.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: September 21, 1999
    Assignee: The BOC Group plc
    Inventors: Evelyn A. Shervington, David W. Birch
  • Compositions and methods for inhibiting the deposition of organic contaminants in pulp and papermaking systems
    Patent number: 5952394
    Abstract: Composition and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100% hydrolysis, a high molecular weight gelatin having a molecular weight of about 100,000 or higher, and a cationic polymer.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: September 14, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Duy T. Nguyen
  • Methods and compositions for treating stickies
    Patent number: 5936024
    Abstract: The present invention provides for methods and compositions for removing stickies and pitch from papermaking fiber by first chemically treating the papermaking fiber with a composition of at least two of an oil-soluble or water-dispersible hydrophobic polymer, an oil soluble or water-dispersible surfactant having an HLB of about 1 to about 10, a tackifier, and an oil soluble or water-dispersible solvent then mechanically separating the agglomerated stickies and pitch from the papermaking fiber.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: August 10, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Tien-Feng Ling, William F. Scholz
  • Composition and method for water clarification
    Patent number: 5916991
    Abstract: Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The tannin containing polymers comprise copolymers of tannin and a cationic monomer. Another embodiment comprises tannin containing polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: June 29, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Jen-Chi Chen, Fu Chen, Gerald C. Walterick, Jr.
  • Crude oil composition comprising an alkylphosphonate antifouling additive
    Patent number: 5910469
    Abstract: Alkylphosphonate ester compounds or acids thereof are disclosed as effective fouling inhibitors in liquid hydrocarbonaceous medium undergoing processing at elevated temperatures.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: June 8, 1999
    Assignee: BetzDearborn Inc.
    Inventors: William S. Carey, Jeffrey H. Peltier, Alan E. Goliaszewski
  • Methods and compositions for inhibiting the polymerization of ethylenically unsaturated monomers
    Patent number: 5886241
    Abstract: The polymerization of an ethylenically unsaturated monomer such as isoprene, butadiene and acrylonitrile is inhibited during storage or handling thereof by the addition of a dihydroxycinnamic acid or derivative thereof.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: March 23, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Graciela B. Arhancet
  • Methods for inhibiting organic contaminant deposition in pulp and papermaking systems
    Patent number: 5885419
    Abstract: Methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. Albumins, globulins or blends thereof and spray-dried animal blood cells are added to the pulp or sprayed onto deposition prone surfaces of a papermaking system suffering from organic contaminants.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: March 23, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Duy T. Nguyen, Tien-Feng Ling
  • Methods and compositions for inhibiting corrosion
    Patent number: 5866042
    Abstract: The present invention provides for methods and compositions for inhibiting the corrosion of iron-containing metals in contact with aqueous systems. The present invention further provides for compositions and methods for inhibiting pitting of iron-containing metals in contact with aqueous systems. The methods include the use of a copolymer of acrylic or methacrylic acid and 2-acetoacetoxyethylmethacrylate with or without a polyvalent metal salt or a polyhydroxy-polycarboxylic acid.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Jen-Chi Chen, William C. Ehrhardt
  • Methods for fumigating soil using acrolein
    Patent number: 5866614
    Abstract: The present invention provides for methods for fumigating soil containing deleterious organisms such as nematodes. The methods utilize an effective amount of acrolein which when added to the soil will control the organisms but will not exhibit phytotoxicity towards the existing or future plant life and an effective amount of a detoxification compound such as for example: sulfites, bisulfites, ammonia or ammonium compounds.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Edmund J. Bockowski, Dwight P. Davis
  • Compositions and Methods for inhibiting the deposition of organic contaminants in pulp and papermaking systems
    Patent number: 5866618
    Abstract: Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100% hydrolysis and a high molecular weight gelatin having a molecular weight of about 100,000 or higher.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Duy T. Nguyen
  • Compositions and methods for inhibiting fouling of vinyl monomers
    Patent number: 5858176
    Abstract: Methods and compositions for inhibiting fouling in vinyl monomers are disclosed. Alkylphosphonate esters or acids thereof are added to vinyl monomers, particularly ethylene dichloride, that are undergoing processing to inhibit fouling.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: January 12, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Graciela B. Arhancet
  • Composition and method for water clarification
    Patent number: 5846436
    Abstract: Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The polymers are aldehyde-free and comprise copolymers of tannin and a cationic monomer. Another embodiment comprises aldehyde-free polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: December 8, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Jen-Chi Chen, Fu Chen, Gerald C. Walterick, Jr., Stephen R. Vasconcellos
  • Treatment of aqueous systems using a chemically modified tannin
    Patent number: 5843337
    Abstract: There is provided a composition comprising tannin containing hydroxyl groups which has been (a) chemically modified by reaction of at least one of said hydroxyl groups with at least one member selected from the group consisting of an esterification agent (e.g. acetic anhydride), etherification agent (e.g. dichloromethane or quaternary organic amine such as N-(3-chloro-2-hydroxypropyl) trimethyl ammonium chloride) to form the corresponding ester, or ether, through said hydroxyl group, and (b) derivatized. The chemically modified tannin is derivatized by reaction with aldehyhde (e.g. formaldehyde), or aldehyde and at least one member selected from the group consisting of ammonia and organic amine containing at least one primary or secondary nitrogen (e.g. cyclohexyl amine); said derivatized tannin being water soluble or dispersable at a pH below 7 and water insoluble at a pH above 7.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: December 1, 1998
    Assignee: BetzDearborn Inc.
    Inventors: David Brian Mitchell, Ralph Lemmel Minnis, Thomas Peter Curran, Steven M Deboo, John Arthur Kelly, Rashmi Patwardhan, Wun Ten Tai
  • Treatment of Aqueous systems using a chemically modified tannin
    Patent number: 5830315
    Abstract: There is provided a composition comprising tannin containing hydroxyl groups which has been (a) chemically modified by reaction of at least one of said hydroxyl groups with at least one member selected from the group consisting of an esterification agent (e.g. acetic anhydride), etherification agent (e.g. dichloromethane or quaternary organic amine such as N-(3-chloro-2-hydroxypropyl) trimethyl ammonium chloride) to form the corresponding ester, or ether, through said hydroxyl group, and (b) derivatized. The chemically modified tannin is derivatized by reaction with aldehyhde (e.g. formaldehyde), or aldehyde and at least one member selected from the group consisting of ammonia and organic amine containing at least one primary or secondary nitrogen (e.g. cyclohexyl amine); said derivatized tannin being water soluble or dispersable at a pH below 7 and water insoluble at a pH above 7.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: November 3, 1998
    Assignee: BetzDearborn Inc.
    Inventors: David Brian Mitchell, Ralph Lemmel Minnis, Thomas Peter Curran, Steven M. Deboo, John Arthur Kelly, Rashmi Patwardhan, Wun Ten Tai
  • Method for inhibition of oxygen corrosion in aqueous systems by the use of a tannin activated oxygen scavenger
    Patent number: 5830383
    Abstract: A method of treating an aqueous system is described which comprises incorporating in the system a hydroxylamine derivative of the general formula: ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 which may be the same or different represents hydrogen, alkyl of 1 to 8 carbon atoms or aryl or a water soluble salt thereof or a precursor thereof, and a tannin in a weight ratio of at least 2:1. This is particularly useful for boiler water systems.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: November 3, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Brian Greaves, Stephen Clifford Poole, Chih Ming Hwa, Joseph Chwei-Jer Fan