Patents Represented by Attorney Alexander D. Ricci

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  • Methods for inhibiting ethylenically unsaturated monomers
    Patent number: 5416258
    Abstract: Methods and compositions are provided for inhibiting the polymerization of butadiene-containing streams during elevated temperature processing thereof or during storage or shipment of monomer containing product. The composition comprises a combination of (a) a phenylenediamine compound having at least one N--H bond and (b) a hydroxytoluene compound. The methods comprise adding from about 1-250 ppm of the combination to the monomer medium, per one million parts of medium.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: May 16, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Graciela B. Arhancet, Paul V. Roling
  • Method and composition for controlling the growth of microorganisms
    Patent number: 5416109
    Abstract: A microbial inhibiting composition and method is disclosed. The composition comprises an amount, effective for the intended purpose of 3-iodo-2-propynyl-butyl carbamate and n-alkyl dimethyl benzyl ammonium chloride. The method comprises administering an amount of this combined treatment to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: May 16, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Corrosion inhibitor composition and method of use
    Patent number: 5415805
    Abstract: A composition and method for inhibiting corrosion of iron and iron-containing metals in contact with aqueous systems containing sulfide compounds. The composition comprises (A) an aqueous solution of an alcohol, an acid, a fatty imidazoline, and an ethoxylated fatty diamine, and (B) an aqueous solution of a molybdate compound or salt thereof.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: May 16, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Michael Brown, James R. Ohlsen, Richard D. McBride
  • Method for improving retention and drainage characteristics in alkaline papermaking
    Patent number: 5415740
    Abstract: A composition and method for improving the drainage and retention characteristics of a paper furnish consisting of a water soluble graft copolymer and bentonite clay. It is preferred that the graft copolymer be added to the furnish prior to at least one shear stage and that the bentonite clay be added after the shear stage.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: May 16, 1995
    Assignee: Betz PaperChem, Inc.
    Inventors: Michael A. Schuster, John C. Harrington, IV, Wen P. Liao, Fu Chen
  • Method and composition for controlling the growth of microorganisms
    Patent number: 5416122
    Abstract: A microbial inhibiting composition and method is disclosed. The composition comprises an amount, effective for the intended purpose of diiodomethyl-p-tolylsulfone and bis trichloro methyl sulfone. The method comprises administering an amount of this combined treatment to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: May 16, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Composition and process for coating metals
    Patent number: 5412011
    Abstract: A non-chromium conversion coating for metal surfaces such as aluminum, steel, galvanized steel and zinc-aluminum steel consisting of an aqueous solution of an anionic polyacrylamide copolymer, an inorganic silicate and an organofunctional silane.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: May 2, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Brenda S. Morris, Jiangbo Ouyang, David W. Reichgott
  • Method of inhibiting reservoir scale
    Patent number: 5409062
    Abstract: A method of inhibiting the formation and deposition of scale in the production of hydrocarbons from subterranean reservoirs. The method is particularly effective at inhibiting the formation and deposition of calcium and barium scales in the produced waters of hydrocarbon recovery operations. The method comprises introducing into the produced water a polyepoxysuccinic acid of the general formula: ##STR1## where n ranges from about 2 to about 11, M is hydrogen or a water soluble cation such as Na.sup.+, NH.sub.4.sup.+, K.sup.+ and R is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 substituted alkyl.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: April 25, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Michael Brown, Gene F. Brock
  • Method for improving pulp washing efficiency
    Patent number: 5405498
    Abstract: A process for enhancing pulp washing efficiency is disclosed. An anionic surfactant is added within the washing or pulping operation to enhance the removal of lignin and spent cooking chemicals from pulp.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: April 11, 1995
    Assignee: Betz PaperChem, Inc.
    Inventor: Jacqueline K. Pease
  • Method for removing deposits from cooling water systems
    Patent number: 5401311
    Abstract: Methods and compositions for removing deposits from surfaces in contact with the water of a cooling water system are disclosed. The combination of a chelant, a phosphonate or phosphate compound, and a base is effective in removing clay deposits from such surfaces.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: March 28, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald T. Freese, Raymond M. Post, David M. Polizzotti
  • Method for removing clay deposits from cooling water systems
    Patent number: 5401323
    Abstract: Methods and compositions for removing deposits from surfaces in contact with the water of a cooling water system are disclosed. A lignosulfonate compound, alone or in combination with other materials, is effective in removing such deposits.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: March 28, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald T. Freese, Raymond M. Post, Edmund J. Bockowski
  • Method of monitoring dried-in-place non-chrome polyacrylamide based treatments for aluminum
    Patent number: 5401333
    Abstract: A process for measuring the coating weight of a dried-in-place non-chromate polyacrylamide/surfactant based conversion coating is disclosed. An ammonium hexafluorotitanate tracer added to such a conversion coating was found to not adversely affect coating properties. The tracer was found to remain proportional to the polymer matrix when the coating was analyzed by X-ray fluorescence.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: March 28, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, William L. Harpel
  • Compositions and methods for inhibiting polymerization of ethlenically unsaturated monomers
    Patent number: 5396005
    Abstract: Disclosed are compositions and methods for inhibiting polymerization of ethylenically unsaturated monomers. The compositions comprise a methoxyphenol compound selected from the group consisting eugenol and 2-tert-butyl-4-hydroxyanisole and a phenylenediamine compound. The methods comprise adding from about 1 to about 10,000 parts per million to the ethylenically unsaturated monomer during processing.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: March 7, 1995
    Assignee: Betz Laboratories, Inc.
    Inventor: Graciela B. Arhancet
  • Compositions and methods for inhibiting vinyl aromatic monomer polymerization
    Patent number: 5396004
    Abstract: Methods and compositions are provided for inhibiting the polymerization of vinyl aromatic monomers under distillation conditions. The compositions comprise a combination of a phenylenediamine compound and a hydroxylamine compound.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: March 7, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Graciela B. Arhancet, Inge K. Henrici
  • Composition for controlling silica and water soluble silicate deposition
    Patent number: 5393456
    Abstract: A method for the inhibition of silica and silicate deposits on the internal surfaces of a water system consisting of adding to the water system a composition comprised of a blend of two water soluble copolymers. The first copolymer contains repeat units of maleic or acrylic acids and a phosphinic acid, or salt forms thereof. The second copolymer contains repeat units of acrylic acid and allyl hydroxy propyl sulfonate ether, or salt forms thereof.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: February 28, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Libardo A. Perez, J. Michael Brown, Khac T. Nguyen
  • Methods for dispersing sulfur in aqueous systems
    Patent number: 5391781
    Abstract: Disclosed are methods for dispersing sulfur in aqueous systems comprising adding an alkylcarboxylic acid compound to the system. This prevents fouling of the aqueous system by the precipitated sulfur.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: February 21, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Quincy K. A. Sintim, Paul V. Roling
  • Gelled peg biocidal treatments
    Patent number: 5391370
    Abstract: A biocidal composition and method for inhibiting and controlling the growth of microorganisms are disclosed. The composition comprises an amount, effective for the intended purpose, of polyethylene glycols and bis(trichloro methyl) sulfone, in combination with additional biocidal components, the composition in a gel form. The method comprises administering an amount of the gelled composition to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: February 21, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, David M. Polizzotti
  • Method and composition for treatment of aluminum
    Patent number: 5391238
    Abstract: Methods of forming a dried in place conversion coating on metal surfaces such as aluminum and aluminum alloys. The methods comprise contacting the metal with an aqueous solution of a water soluble maleic or acrylic acid/allyl ether copolymer alone or with an acid.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: February 21, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: David W. Reichgott, Fu Chen
  • Gelled polyvinyl alcohol biocidal treatments
    Patent number: 5391369
    Abstract: A biocidal composition and method for inhibiting and controlling the growth of microorganisms are disclosed. The composition comprises an amount, effective for the intended purpose, of polyvinyl alcohols and gallic or boric acids, in combination with additional biocidal components, the composition in a gel form. The method comprises administering an amount of the gelled composition to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: February 21, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, David M. Polizzotti
  • High temperature hydrocarbon defoamer composition and method
    Patent number: 5389299
    Abstract: Methods and compositions for controlling foam in high temperature hydrocarbons during processing animal oils, exemplified by mink oil, are added to the hydrocarbon to control foam.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: February 14, 1995
    Assignee: Betz Laboratories, Inc.
    Inventor: Paul R. Hart
  • Composition and process for treating metal surfaces
    Patent number: 5389405
    Abstract: A non-chromate conversion coating for metal surfaces such as aluminum, steel, galvanized steel and zinc-aluminum steel consisting of an aqueous solution of a cationic polymer, an alkaline aqueous silicate and an organofunctional silane.
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: February 14, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah L. Purnell, Brenda S. Morris, David W. Reichgott