Patents Represented by Attorney Mary E. Bongiorno
  • Patent number: 6521791
    Abstract: The invention is a process to regenerate monolith catalytic reactors employed in the liquid phase hydrogenation reactions, particularly those kinds of reactions involving nitroaromatic compounds. The catalytic metals in the monolith catalytic reactor are deactivated by carbonaceous and deactivating byproducts and must be regenerated to extend the catalyst service life and reduce costs. The regeneration process involves two steps: initially passing an oxidizing gaseous mixture through the monolith catalytic reactor at an elevated temperature and for a time sufficient to remove carbonaceous and deactivating byproducts; and then passing a reducing gas though the monolith catalytic reactor previously exposed to the oxidizing gas under conditions for reducing the catalytic metal to its reduced state.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: February 18, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Keith Allen Welp, Anthony Rocco Cartolano, Frederick Carl Wilhelm, William Joseph Mazzafro
  • Patent number: 6515191
    Abstract: A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds and a method of preparing intermediates thereof. The hydroxy aromatic compound can be a mono-, bi- or tricyclic aromatic in which the rings are separate or fused. One or more of the rings can contain heteroatoms, such as oxygen, nitrogen, or sulfur, and can contain one or more substitutions, in addition to the hydroxy substitution.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: February 4, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gauri Sankar Lal, Kathryn Sue Hayes
  • Patent number: 6506696
    Abstract: A process for forming a synthetic based nonwoven web bonded with a crosslinkable polymer wherein an aqueous polymeric emulsion containing a crosslinkable polymer is applied to the synthetic based nonwoven web, the water removed, and the crosslinkable polymer crosslinked. The crosslinkable polymer incorporates acetoacetate functionality and carboxylic acid functionality; wherein crosslinking is achieved by the reaction of the acetoacetate with an effective amount of a polyaldehyde and the reaction of the carboxylic acid with an effective amount of a polyaziridine compound.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: January 14, 2003
    Assignee: Air Products Polymers, L.P.
    Inventors: Joel Erwin Goldstein, Ronald Joseph Pangrazi
  • Patent number: 6506948
    Abstract: This invention relates to an improvement in a process for the production of dinitrotoluene and particularly to the recovery of dinitrotoluene and organic by-products from the wastewater and wash waters generated in the process. Wastewater and wash water streams contaminated with residual levels of mononitrotoluene, dinitrotoluene, and organic by-products, formed in the purification process, are contacted with toluene. An organic phase and an aqueous phase are generated. The phases are separated and the dinitrotoluene recovered from the organic phase.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: January 14, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventor: John Edward Sawicki
  • Patent number: 6472553
    Abstract: Compounds of the structure: wherein R1 is H, a C1 to C4 alkyl, or a substituted C1 to C4 alkyl; R2 is H or a cyanoethyl; n is an integer of 1 to 4, and y is 1 or 2, and a method for making the compounds. The compounds are made by reacting acrylonitrile with one or more cycloaliphatic vicinal diamines in the presence of water and a catalytic amount of an acid catalyst having a pKa of −3.0 to 7.5.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: October 29, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Juan Jesus Burdeniuc
  • Patent number: 6455134
    Abstract: Improved ink jet paper coatings which impart high optical density images and excellent water resistance by the incorporation of an amine functional, colloid-stabilized emulsion into the coating formulation. The improvement resides in the use of amine functional monomers, such as 2-(dimethylamino)ethyl methacrylate (DMAEMA), which are emulsion copolymerized with other ethylenically unsaturated monomers, such as vinyl acetate, in the presence of a large amount of a colloid stabilizing polymer having a plurality of pendent hydroxyl groups; preferably, poly(vinyl alcohol).
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: September 24, 2002
    Assignee: Air Products Polymers, L.P.
    Inventor: John Joseph Rabasco
  • Patent number: 6455744
    Abstract: A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds and a method of preparing intermediates thereof. The hydroxy aromatic compound can be a mono-, bi- or tricyclic aromatic in which the rings are separate or fused. One or more of the rings can contain heteroatoms, such as oxygen, nitrogen, or sulfur, and can contain one or more substitutions, in addition to the hydroxy substitution.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: September 24, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gauri Sankar Lal, Kathryn Sue Hayes
  • Patent number: 6432864
    Abstract: Novel acid-blocked amine catalysts and their use in the preparation of polyurethanes. The acid-blocked amine catalysts have the general structure shown below: wherein A is the residue of an organic acid anhydride; R1 is H or C1 to C6 alkyl; R2 is H or C1 to C6 alkyl; n is an integer of 0 to 10; and B is a compound containing a protonated amine and one or more primary amine, secondary amine, or tertiary amine groups.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: August 13, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stephan Herman Wendel, Reza Fard-Aghaie
  • Patent number: 6433212
    Abstract: Compounds of the structure: wherein R1 is H, a C1 to C4 alkyl, or a substituted C1 to C4 alkyl; R2 is H or a cyanoethyl; n is an integer of 1 to 4, and y is 1 or 2, and a method for making the compounds. The compounds are made by reacting acrylonitrile with one or more cycloaliphatic vicinal diamines in the presence of water and a catalytic amount of an acid catalyst having a PKa of −3.0 to 7.5.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: August 13, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Juan Jesus Burdeniuc
  • Patent number: 6429338
    Abstract: This invention relates to an improved process for the preparation of cyclohexylamines wherein an aromatic amine is contacted with hydrogen in the presence of a hydrogenation catalyst. The improvement resides in utilizing a hydrogenation catalyst comprised of rhodium metal, utilizing a dialkyl ether solvent, and effecting delay addition of the aromatic diamine to the reaction medium.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: August 6, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Gamini Ananda Vedage, Bradley Heath Cook
  • Patent number: 6426121
    Abstract: This invention relates to a dual crosslinkable polymer/crosslinking system particularly suited for use in preparing high quality nonwoven products. The polymeric binders incorporate at least two different but reactive functionalities, i.e., hydroxy and carboxyl, and which are capable of reacting with two other multifunctional reactants, i.e., polyaldehydes and aziridines, each of which reacts with at least one of the functionalities present in the polymer. This selection of reactive functionality coupled with the selection of crosslinking agents permits ambient temperature cure.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: July 30, 2002
    Assignee: Air Products Polymers, L.P.
    Inventors: Joel Erwin Goldstein, Ronald Joseph Pangrazi
  • Patent number: 6426151
    Abstract: The present invention is directed to improved flexibilized, plasticized polyvinyl chloride films bonded with a substrate by means of an aqueous based pressure sensitive acrylic adhesive emulsion polymers. Conventional emulsion based pressure sensitive adhesives were comprised of a copolymer comprised of polymerized units of acrylic esters and ethylenically unsaturated monomers, the copolymer having a Tg of from −15 to −70° C. The improvement in the aqueous based, emulsion polymerized pressure sensitive adhesives resides in the incorporation of polymerized units of a vinyl C8-13 ester of a neo-acid into the adhesive. The vinyl ester is formed from a mixture of propylene oligomers and such vinyl ester is represented by the chemical formula: C8-13H7-27CO2CH═CH2. Preferably, the adhesive includes units of methyl methacrylate, butyl acrylate of 2-ethylhexyl acrylate and a carboxylic acid selected from acrylic acid or methacrylic acid.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: July 30, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chung-Ling Mao, Kenneth Merle Kem
  • Patent number: 6414065
    Abstract: Production of a paper coating composition having improved low shear viscosity at a high solids level of fine particle size calcium carbonate. The improvement in low shear viscosity is achieved by dissolving a fine particle size, partially hydrolyzed, low molecular weight poly(vinyl alcohol) powder in an aqueous slurry of pigment particles containing predominantly fine particle size calcium carbonate. Dissolution of the poly(vinyl alcohol) is achieved without external heating or adding water to the slurry. The slurry can then be formulated with other components to produce the ink jet paper coating composition which, when applied to a paper substrate, provides excellent ink jet printability.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: July 2, 2002
    Assignee: Celanese International Corporation
    Inventor: John Richard Boylan
  • Patent number: 6399830
    Abstract: This invention pertains to an improvement in a process for the formation of secondary or tertiary amines by the catalytic reductive amination of a nitrile with a primary amine. The catalyst employed in the improved reductive amination process is one that has been promoted with an acidic promoter preferably a solid phase acidic promoter.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: June 4, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Nelson Armor, Michael Edward Ford, William Eamon Carroll
  • Patent number: 6395817
    Abstract: Aqueous based graft emulsion copolymers comprising a polymer having a plurality of hydroxyl groups, preferably a vinyl alcohol homo- or copolymer, grafted with a polyethylene. The graft emulsion copolymer can be prepared by polymerizing ethylene and, optionally another ethylenically unsaturated monomer, in an aqueous solution of a polymer having a plurality of pendent hydroxyl groups, especially poly(vinyl alcohol). The graft emulsion copolymer product can have a polyethylene content ranging from 50 to 95 wt %, hydroxyl-containing polymer ranging from 5 to 50 wt %, and up to 45 wt % of another polymerized ethylenically unsaturated monomer. Polymerization is carried out in an aqueous solution containing at least 5 wt %, preferably 10 wt %, of a hydroxyl-containing polymer having a degree of polymerization of 50 to 2200, preferably 100 to 500.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: May 28, 2002
    Assignee: Air Products Polymers, L.P.
    Inventors: John Joseph Rabasco, William Edward Lenney
  • Patent number: 6395188
    Abstract: A single step wet oxidation process for treating wastewaters containing organic species, with or without heteroatoms, and anions of strong acids, e.g. sulfate or phosphate ion, or cations of strong bases, e.g., sodium, potassium or calcium ions, and which may contain ammonium ion and/or nitrate ion in addition to added ammonium ion and/or nitrate ion was developed which on thermal treatment near the critical temperature of water removes substantially all the COD and nitrogen through conversion to water, carbon dioxide or carbonate species, nitrogen gas and small amounts of nitrous oxide. Key to the success of the process is the balancing of all reducing species with an equivalent amount of oxidizing species and the balancing of all strong acid anions with strong base cations and including at least 0.06 acetate ion for moles of nitrate in the wet oxidation process.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: May 28, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, John Edward Sawicki, Thomas Albert Johnson, Malee Leeaphon
  • Patent number: 6390305
    Abstract: High performance filters comprise a basestock impregnated with an aqueous based poly(vinyl alcohol) graft emulsion copolymer as binder. The aqueous based poly(vinyl alcohol) graft emulsion copolymer binder is prepared by graft polymerizing one or more ethylenically unsaturated monomer in an aqueous poly(vinyl alcohol) solution in which at least 30% of the total poly(vinyl alcohol) is 70 to 97 mol % hydrolyzed.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: May 21, 2002
    Assignee: Air Products Polymers, L.P.
    Inventors: John Joseph Rabasco, Ronald Bernal Jones, William Edward Lenney, George Davidowich
  • Patent number: 6380274
    Abstract: A composition having the formula: wherein R is a linear alkyl, branched alkyl, cycloalkyl, polycyclic alkyl, alkylaminoalkyl, or alkyloxyalkyl group having 1 to 20 carbon atoms and at least one primary, secondary, or tertiary amino functional group. The composition is effective as a catalyst in the production of polyurethanes.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: April 30, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ning Chen, Richard Paul Underwood, Mark Leo Listemann
  • Patent number: 6365246
    Abstract: An economical means of safely “containing” or “packaging” commercial electrophilic fluorination agents whereby these agents are readily stored and transported in a package, typically without loss of “F+” activity, and in a form which is readily and directly useable, i.e., in solution or a slurry. Importantly, the solution/slurry medium provides a tremendous safety margin for storage and transportation since the solution medium has an enormous ability to absorb heat (due to the latent heat of vaporization of the liquid) relative to the contained active fluorination agent.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: April 2, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Robert George Syvret, James Joseph Hart, Andrew Joseph Woytek, Frank Michael Prozonic
  • Patent number: 6348256
    Abstract: Improved ink jet paper coatings which impart high optical density images and excellent water resistance to paper and a process for making an improved ink jet recording paper. The coating formulation comprises an inorganic pigment, preferably silica, and an amine modified poly(vinyl alcohol) composition in which the poly(vinyl alcohol) is graft polymerized with an ethylenically unsaturated monomers containing primary, secondary, tertiary, or quaternary amine functionality.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: February 19, 2002
    Assignee: Celanese International Corporation
    Inventors: John Joseph Rabasco, Eric Howard Klingenberg, John Richard Boylan