Acrylic Polymer Patents (Class 210/701)
  • Patent number: 11046794
    Abstract: Silicon containing polyamine scale inhibitors derived from poly(primary amine)s are disclosed. The scale inhibitors can be used to reduce siliceous scale formation in industrial process streams such as alumina recovery process streams, nuclear waste streams and kraft paper mill effluent streams.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: June 29, 2021
    Assignee: Cytec Industries Inc.
    Inventors: Airong Song, Lei Zhang, Douglas Cywar, Haunn-Lin Tony Chen, Matthew Taylor
  • Patent number: 10815134
    Abstract: The water treatment device according to the present disclosure includes: an electrochemical cell having electrodes including a positive electrode and a negative electrode, and a bipolar membrane; a tank; a power supply configured to apply power to the electrodes; a water circulation flow path having at least the tank and the electrochemical cell and through which water circulates; a circulation device configured to circulate water in the water circulation flow path; a raw water supply path configured to supply raw water to the water circulation flow path; and a control device. In performing water softening treatment in the electrochemical cell where power is applied to the electrodes so as to remove ions from raw water and soft water is produced, the control device drives the circulation device so as to circulate water in the water circulation flow path.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: October 27, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shigeru Sasabe, Tomoko Tani, Noriyoshi Ueya, Kazuo Imai, Hiroaki Kitagawa
  • Patent number: 10400052
    Abstract: The invention relates to polymers derived at least from one: (A) one N-vinyl amide unit, and (B) one hydroxyl-containing acrylate unit, and to polymers derived at least from: (A) N-vinyl-2-caprolactam, and (B) one non-acrylate unit having: (i) at least one hydroxyl group, and/or (ii) at least one functional group convertible to a hydroxyl group wherein at least one group is converted to hydroxyl functionality in the final polymer product. Such polymers may exhibit degradability, e.g., in seawater or soil environments. In preferred embodiments, these polymers and compositions thereof are used in oilfield applications, such as an inhibitor of gas hydrates and/or a kinetic inhibitor of gas hydrates. The polymer can assume alternating, block, and/or random configurations of the repeating units, with at least one ester group. The chemical structure subscripts m, and n may be any integer equal to or greater than 1.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: September 3, 2019
    Assignee: ISP INVESTMENTS LLC
    Inventors: Osama M. Musa, Cuiyue Lei
  • Patent number: 10280828
    Abstract: A very low water (VLW) heat transfer fluid, having an atmospheric boiling point of about 148° C. (about 300° F.) and a low temperature operating limit (LTOL) of ?40° C., or below, comprised of one or more polyhydric alcohols, one or more corrosion inhibitors, and between 5% and 10% water. The heat transfer fluid retains many of the features of a non-aqueous heat transfer fluid, while providing a substantially lower viscosity. The heat transfer fluid is suitable for use in internal combustion engines as an engine coolant and in other heat transfer applications.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: May 7, 2019
    Assignee: EVANS COOLING SYSTEMS, INC.
    Inventor: J Thomas Light
  • Patent number: 10150885
    Abstract: A gas-barrier packaging material including: a support; an adhesive layer laminated on the support; a first barrier layer laminated on the adhesive layer; a second barrier layer laminated on the first barrier layer; and a protective layer formed of a coating liquid that contains a polyvalent metal compound, a polyester based resin, and a dispersant that is a sodium salt of a polycarboxylic acid based resin, the protective layer being laminated on the second barrier layer. In the gas-barrier packaging material, the protective layer contains the polyvalent metal compound by about 40 to 90 wt % relative to 100 wt % of the protective layer. When the second barrier layer is separated and an infrared absorption spectrum of the second barrier layer after separation is measured by a transmission method, a ratio between a maximum peak height ? in a range of about 1,490 to about 1,659 cm?1 and a maximum peak height ? in a range of about 1,660 to about 1,750 cm?1 as expressed by ?/? is less than about one.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: December 11, 2018
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Noboru Omori, Katsumi Kawaguchi
  • Patent number: 9790395
    Abstract: The present invention relates to soluble aqueous compositions comprising metal salts of selected polyitaconic acid (PIA) resins.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: October 17, 2017
    Assignee: Itaconix Corporation
    Inventors: Martin Vince, Anita Augustyniak, Yvon Durant, John Shaw
  • Patent number: 9487597
    Abstract: The present invention pertains to new alkali swellable thickening emulsions, free of surfactants and solvents other than water: as a result, all drawbacks related to the use of solvents, or to the formation of foam in the case of surfactants, are avoided. These new emulsions contain a certain quantity of 2-acrylamido-2-methylpropane sulfonic acid (or AMPS, CAS #: 40623-75-4). They have proven effective at thickening aqueous mediums, particularly water-based paints, paper coatings, aqueous suspensions of mineral materials, detergents, cosmetic formulations, or formulations containing a hydraulic binder.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: November 8, 2016
    Assignee: COATEX S.A.S.
    Inventor: Jean-Marc Suau
  • Publication number: 20150076074
    Abstract: A method for controlling colloidal/amorphous silica scale deposition in an aqueous system is described, which comprises adding to the aqueous system an effective amount of a synergistic combination comprising: A) 10% to 90% by weight of at least one carboxylate polymer comprising units derived from one or more carboxylate monomers; and B) 90% to 10% by weight of at least one chelating agent, based on the total weight of said synergistic combination. The carboxylate polymer may be a homopolymer of (meth)acrylic acid, maleic acid, itaconic acid, or their salts, or a copolymer of one or more monomers selected from meth)acrylic acid, maleic acid, itaconic acid, and their salts and, optionally, one or more sulfonic-free ethylenically unsaturated monomers.
    Type: Application
    Filed: March 28, 2013
    Publication date: March 19, 2015
    Inventors: Somil Mehta, Barry L. Turini
  • Patent number: 8980101
    Abstract: A method of inhibiting scale formation and deposition from a feed stream passing through a membrane system is disclosed. The method comprises: (a) controlling the pH of said feed stream within the range between about 7.0 and about 8.2; (b) optionally controlling the temperature of said feed stream within the range between about 5° C. to about 40° C. when the membrane system is an RO system, a NF system, an ED system, an EDI system or a combination thereof; (c) optionally controlling the temperature of said feed stream within the range between about 40° C. and about 80° C. when the membrane system is an MD system; and (d) adding an effective amount of a scale inhibitor to said feed stream, said scale inhibitor comprises an AA-AMPS copolymer.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: March 17, 2015
    Assignee: Nalco Company
    Inventor: Deepak A. Musale
  • Patent number: 8927654
    Abstract: Provided are a water-treating agent which includes a specific nonionic polymer and a phosphorus compound and can exhibit the ability to inhibit the deposition of silica-based scale under wide ranges of water quality conditions and temperature conditions; and a method of treating water. The inhibitor for silica-based scale includes a nonionic polymer and a phosphorus compound, the nonionic polymer being: a polymer formed by the reaction of an unsaturated double bond and including units derived from at least one monomer selected from the group consisting of (meth)acrylamide, N-substituted (meth)acrylamide and N-vinyl lactam; and/or one or more polymers having an ether group and selected from the group consisting of alkyl alcohol/polyalkylene oxide adducts, aliphatic monocarboxylic acid/polyalkylene oxide adducts, and polyvinyl alcohol/polyalkylene oxide adducts.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: January 6, 2015
    Assignee: Kurita Water Industries Ltd.
    Inventor: Ikuko Nishida
  • Publication number: 20140326675
    Abstract: Rheology modifying agents and methods of modifying the rheology of a slurry are disclosed, in addition to methods for the prevention of fouling. The slurry can be a lime slurry or a magnesium oxide slurry. The rheology modifying agent can be a low molecular weight anionic polymer, a high molecular weight polymer, a mixture of a low molecular weight anionic polymer and a high molecular weight polymer, a mixture of a high molecular weight polymer and a chelating agent, and a mixture of a chelating agent, a high molecular weight polymer, and a low molecular weight anionic polymer.
    Type: Application
    Filed: May 1, 2013
    Publication date: November 6, 2014
    Applicant: Ecolab USA, Inc.
    Inventors: Jasbir Gill, Tzu Y Chen, Reagan Faith, Adam Coulterman
  • Publication number: 20140319065
    Abstract: A scale suppression media and methods of making augmented polyacrylate resin beads combined with a directing agent to facilitate the formation of calcite and aragonite forms of calcium carbonate, the directing agent deposited directly into said polyacrylate resin beads. A strong acid monovalent salt, such as a metal ion, is added to the polyacrylate resin, and is adapted to be time released, and templates the calcium carbonate in the influent to form crystals in the water with reduced deposition of scale on the surfaces of material in contact with the water. The pores of the resin are filled with metal templating agent, and the agent is released as the influent passes over the resin.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 30, 2014
    Applicant: KX Technologies LLC
    Inventors: Bruce Taylor, Frank A. Brigano, George Dimotsis
  • Publication number: 20140263078
    Abstract: Methods for dispersing foulants are disclosed herein. Various effective dispersant compositions are also disclosed. The dispersant composition can include a silt dispersant and a hydrocarbon dispersant. Generally, the silt dispersant can be a homopolymer or a copolymer of one or more monomers, and the monomers can be one or more of acrylic acid, methacrylic acid, ?-halo acrylic acid, maleic acid, itaconic acid, vinyl acetic acid, allyl acetic acid, fumaric acid, ?-carboxylic acrylate, and their salts. The silt dispersant can also be a terpolymer of acrylic acid, acrylamide, and sulfonated acrylamide. The hydrocarbon dispersant can be a non-ionic surfactant or a nonylphenol or a nonylphenol ethoxylate, such as a high EO 9 Nonyl phenol resin. Also disclosed are methods for preventing or reducing fouling in equipment that contacts water used during a hydrocarbon production process.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: ECOLAB USA INC.
    Inventor: ECOLAB USA INC.
  • Publication number: 20140183140
    Abstract: The invention is directed towards methods and compositions for making and using fluorescent monomers which are synthesized by reacting a substituted or non-substituted benzoxanthene anhydride with an amine and with a moiety containing a polymerizable group. Such monomers are useful for the preparation of tagged treatment polymers. Such tagged treatment polymers are useful as scale inhibitors in industrial water systems.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 3, 2014
    Inventors: Jeffery M. Atkins, Barbara E. Moriarty, Paul J. Zinn
  • Patent number: 8728324
    Abstract: Water soluble or water dispersible terpolymers are employed in high pressure steam generating systems to control deposit formation and contaminant transport in the aqueous medium in such systems. The terpolymer may comprise repeat units formed from acrylic acid, allylalkoxylated ethers, and allylhydroxylated alkyl ether.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: May 20, 2014
    Assignee: General Electric Company
    Inventors: Donald A. Meskers, Jr., Trevor James Dale, Bernard Joseph Neidert, Rosa Crovetto, Karen Annette Welton
  • Publication number: 20130341282
    Abstract: Water soluble or water dispersible terpolymers are employed in high pressure steam generating systems to control deposit formation and contaminant transport in the aqueous medium in such systems. The terpolymer may comprise repeat units formed from acrylic acid, allylalkoxylated ethers, and allylhydroxylated alkyl ether.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 26, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Donald A. Meskers, JR., Trevor James Dale, Bernard Joseph Neidert, Rosa Crovetto, Karen Annette Welton
  • Patent number: 8496847
    Abstract: A method and chemical composition are provided which permit operation of evaporative cooling towers at increased cycles of concentration without formation of calcium scale. The method can include first determining the calcium hardness and total alkalinity of the makeup water, calculating the operating cycles of concentration using a formula developed for the specified chemical composition, then dosing the treated water to maintain a constant level of the chemical composition. The method permits scale-free operation of evaporative cooling towers at a minimum of two (2) cycles of concentration over existing technology.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: July 30, 2013
    Assignee: ProChemTech International, Inc.
    Inventor: Timothy Edward Keister
  • Patent number: 8366915
    Abstract: Methods for reducing calcium deposition along surfaces in contact with the water phase of a resolved water/oil emulsion are disclosed. High calcium crude oil and the like are contacted with a sequestrant to form a sequestered calcium containing complex that partitions to the water phase in the resolved emulsion. A specifically formulated polymeric deposit control agent is added to the water phase to inhibit calcium deposit formation therein and along surfaces in contact with the water phase.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: February 5, 2013
    Assignee: General Electric Company
    Inventors: Alan E. Goliaszewski, David B. Engel, Roger C. May
  • Patent number: 8128841
    Abstract: A method and composition are provided for the operation of an evaporative cooling tower with minimal, or no, blowdown. In some embodiments, the method involves using sodium cation-exchanged softened water as makeup water for the cooling tower, providing a bypass filter for suspended solids removal from the cooling water, treating the cooling water with a composition for control of corrosion and deposition, and using an effective biocide for control of biological growth within the cooling tower system. In some embodiments, a composition is provided that comprises AMPS acrylic terpolymer, sodium silicate, phosphate ions, and polyphosphate ions. When dosed at the recommended levels, the composition controls corrosion of cooling system materials to generally acceptable levels in spite of the extremely corrosive environment resulting from the cycling of sodium cation-exchanged softened water in the cooling tower.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: March 6, 2012
    Assignee: Prochemtech International, Inc.
    Inventor: Timothy E. Keister
  • Publication number: 20120006671
    Abstract: Methods for inhibiting scale formation in evaporators of the type used to produce aqueous distillate from produced waters such as those waters that are commonly formed in steam assisted gravity drainage (SAGD) oil recovery methods are provided. In accordance with the invention, a chelant selected from EDTA, DTPA, NTA, and HEEDTA is added to the recirculating evaporator system brine or to the feedwater to such systems.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 12, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: James Charles Nowak
  • Publication number: 20110253628
    Abstract: This invention relates to an improved method of inhibiting corrosion and calcium sulfate and calcium carbonate scaling in thermal and membrane desalination processes. The method includes adding a composition having an acrylic acid 2-acrylamido-2-methylpropyl sulfonic acid copolymer, combined with a synergistically effective amount of oligomeric phosphinosuccinic acid to seawater or recirculation brine in a desalting process to produce water for drinking and industrial applications. The method also includes adding a composition including mono, bis, and oligomeric phosphinosuccinic acid adducts to the desalting process.
    Type: Application
    Filed: June 30, 2011
    Publication date: October 20, 2011
    Inventors: Peter Blokker, Jasbir S. Gill, Paloma Lopez-Serrano
  • Patent number: 7964686
    Abstract: Aqueous treatment composition for use as anti-scalant and dispersant. The composition includes a polymer containing low amounts of sulfonate that prove as effective in carbonate and phosphate inhibition as polymers containing much higher amounts of sulfonate.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: June 21, 2011
    Assignee: Akzo Nobel N.V.
    Inventors: Klein A. Rodrigues, Adrian Zuberbuehler, Stuart Holt, Kevin Beairsto
  • Patent number: 7960455
    Abstract: Use of copolymers comprising alkylene oxide units, which copolymers comprise incorporated randomly or blockwise by polymerization (a) 50 to 93 mol % of acrylic acid and/or a water-soluble salt of acrylic acid, (b) 5 to 30 mol % of methacrylic acid and/or a water-soluble salt of methacrylic acid and (c) 2 to 20 mol % of at least one nonionic monomer of the formula I where the variables have the following meaning: R1 hydrogen or methyl; R2 a chemical bond or unbranched or branched C1-C6-alkylene; R3 identical or different unbranched or branched C2-C4-alkylene radicals; R4 unbranched or branched C1-C6-alkyl; n 3 to 50, as additive to phosphate- and/or phosphonate-comprising aqueous systems in industrial technical plants.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: June 14, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Stephan Nied, Karl-Heinz Buechner, Marcus Guzmann
  • Publication number: 20110114564
    Abstract: A method of inhibiting the deposition of silica and silicate compounds on surfaces in water systems by treating the water with an effective amount of an alkoxylated amines or imidized polymer from alkoxylated amines either alone or in combination with acrylic acid or maleic acid homo- or co-polymers and phosphonates.
    Type: Application
    Filed: July 6, 2009
    Publication date: May 19, 2011
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Zahid Amjad, Robert W. Zuhl
  • Patent number: 7862727
    Abstract: A method and composition for processing natural water such as seawater, brackish, and estuarine water wherein the water is concentrated with or without heating comprising adding to the water (I) a water-soluble polymeric phosphonate and (II) a water-soluble polycarboxylate to control scale formation and deposition. Optionally a water -soluble poly[isopropenylphosphonic acid] can also be utilized as component (I) without the addition of component (II).
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: January 4, 2011
    Assignee: General Electric Company
    Inventors: Nicholas R. Blandford, Libardo A. Perez, William S. Carey
  • Patent number: 7857989
    Abstract: This invention relates to metal oxides dispersant compositions comprising (a) certain a metal oxides dispersant, and (b) an oxime. The invention also relates to a process for dispersing metal oxides in an aqueous system that involves adding the dispersant composition to the aqueous system.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: December 28, 2010
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Edward S. Beardwood, Kostan B. Charkhutian
  • Patent number: 7858058
    Abstract: The invention pertains to removing soluble alkali metal or ammonium salt of a divalent anion from brine comprising following steps: obtaining brine with NaCl-concentration between 150g/L and saturation in the presence or absense of a cyrstal growth inhibitor for NaCl(GCI-NaCl),or with NaCl concentration above saturation in the presence of a CGI-NaCl, said brine optionally comprising a crystal growth inhibitor for the alkali metal or ammonium salt of the divalent anion(CGI-DA); if necessary, acidify the solution to pH<11.5; if the concentration of CGI-DA is less than 20 mg/L, adding CGI-DA to obtain at least 20 mg CGI-DA/L; subjecting the solution to a membrane filtration; if the concentration of CGI-DA in the concentration from the separation is less than 20 mg/L, adding CGI-DA to obtain at least 20 mg CGI-DA/L; crystalling the concentration; removing the crystallized alkali metal or ammonium salt of the divalent anion.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: December 28, 2010
    Assignee: Akzo Nobel N.V.
    Inventors: Gerrald Bargeman, René Lodewijk Maria Demmer, Boris Kuzmanovic, Cornelis Elizabeth Johannus Van Lare, Mateo Jozef Jacques Mayer, Maarten André Irène Schutyser, Jan Barend Westerink
  • Publication number: 20100300218
    Abstract: A method for reducing corrosion product transport in a power producing facility. The method includes the steps of selecting a chemical dispersant adapted to reduce the deposition of corrosion products in the recirculation path, and using at least one chemical injector to inject the chemical dispersant into a fluid contained in the recirculation path during recirculation path cleanup to increase corrosion product removal.
    Type: Application
    Filed: May 18, 2010
    Publication date: December 2, 2010
    Applicant: ELECTRIC POWER RESEARCH INSTITUTE, INC.
    Inventors: Keith Paul Fruzzetti, Charles Marks
  • Patent number: 7674382
    Abstract: A method of cleaning a fouled and/or scaled UF or MF membrane with a solution containing one or more thermo-responsive polymers is disclosed. More specifically, the method comprises: (a) treating the membrane in a membrane separation system with a solution containing one or more TRP, wherein said TRP is soluble in said solution and at least an effective amount of said TRP diffuses into a foulant layer that is present on the surface and/or in pores of said membrane; (b) making insoluble said TRP diffused into said foulant layer; (c) optionally rinsing the membrane; (d) optionally backwashing the membrane with air and/or liquid between the steps (b) and (c); and (e) optionally backwashing the membrane with air and/or liquid after the membrane is rinsed in step (c).
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: March 9, 2010
    Assignee: Nalco Company
    Inventor: Deepak A. Musale
  • Publication number: 20100051559
    Abstract: A method of inhibiting scale formation and deposition from a feed stream passing through a membrane system is disclosed. The method comprises: (a) controlling the pH of said feed stream within the range between about 7.0 and about 8.2; (b) optionally controlling the temperature of said feed stream within the range between about 5° C. to about 40° C. when the membrane system is an RO system, a NF system, an ED system, an EDI system or a combination thereof; (c) optionally controlling the temperature of said feed stream within the range between about 40° C. and about 80° C. when the membrane system is an MD system; and (d) adding an effective amount of a scale inhibitor to said feed stream, said scale inhibitor comprises an AA-AMPS copolymer.
    Type: Application
    Filed: September 4, 2008
    Publication date: March 4, 2010
    Inventor: Deepak A. Musale
  • Patent number: 7662289
    Abstract: A method of cleaning a fouled or a scaled RO or NF membrane surface with a solution containing one or more thermo-responsive polymers is disclosed. More specifically, the method comprises: treating the membrane surface in a membrane separation system with a solution containing one or more TRP, wherein said TRP is soluble in said solution and at least an effective amount of said TRP diffuses into a foulant layer on said membrane surface; making insoluble said TRP diffused into said foulant layer; optionally, rinsing the membrane.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: February 16, 2010
    Assignee: Nalco Company
    Inventors: Deepak A. Musale, E. H. Kelle Zeiher
  • Publication number: 20090294374
    Abstract: A method for inhibiting the formation and deposition of silica and silicate compounds in water systems comprising adding to the water in the water system an effective inhibiting amount of one or more water-soluble polymers of formula wherein M is a repeating unit obtained after polymerization of one or more monomers comprising a polymerizable carbon-carbon double bond; r is 0 to about 5 mole percent, s is 100 to about 95 mole percent; R1 is H or C1-C4 alkyl; R2 is a group of formula —(CH2—CHR3—O)n—; R3 is H or CH3, or a mixture thereof; and n is 2 to about 25.
    Type: Application
    Filed: June 2, 2008
    Publication date: December 3, 2009
    Inventors: Jasbir S. Gill, Srikanth Kidambi, Frank Fun-Yuee Lu, John D. Morris
  • Publication number: 20090294373
    Abstract: The current invention relates to the inhibition of scale deposits in a slurry or solution under acidic conditions. The current invention uses an aqueous synthetic mixture comprising a phosphate, phosphonate, anionic polymer, or combinations thereof in the slurry and/or solution to inhibit scale deposition from acidic process streams. The control of scale under acidic conditions is difficult because the acidic environment renders most known inhibitors ineffective. The claimed invention causes a significant decrease in the scale generated allowing for reduced down time of systems for de-scaling procedures and thus increasing production.
    Type: Application
    Filed: February 16, 2009
    Publication date: December 3, 2009
    Inventors: Jasbir S. Gill, Daniel N.T. Hay
  • Patent number: 7595000
    Abstract: A method and composition are provided for the operation of an evaporative cooling tower with minimal, or no, blowdown. In some embodiments, the method involves using sodium cation-exchanged softened water as makeup water for the cooling tower, providing a bypass filter for suspended solids removal from the cooling water, treating the cooling water with a composition for control of corrosion and deposition, and using an effective biocide for control of biological growth within the cooling tower system. In some embodiments, a composition is provided that comprises AMPS acrylic terpolymer, sodium silicate, phosphate ions, and polyphosphate ions. When dosed at the recommended levels, the composition controls corrosion of cooling system materials to generally acceptable levels in spite of the extremely corrosive environment resulting from the cycling of sodium cation-exchanged softened water in the cooling tower.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: September 29, 2009
    Assignee: ProChamTech International, Inc.
    Inventor: Timothy E. Keister
  • Patent number: 7572381
    Abstract: The present invention relates to use of compositions comprising: (a) a copolymer of an unsaturated phosphonic acid (or salt of such an acid) with an unsaturated sulphonic acid (or salt of such an acid) or an unsaturated carboxylic acid (or salt of such an acid); or (b) a terpolymer of an unsaturated phosphonic acid (or salt of such an acid) with an unsaturated sulphonic acid (or salt of such an acid) and an unsaturated carboxylic acid (or salt of such an acid). These compositions are used to control the formation of scale in water systems.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: August 11, 2009
    Assignee: Rhodia U.K. Limited
    Inventors: Robert Eric Talbot, Christopher Raymond Jones, Emma Hills
  • Patent number: 7537705
    Abstract: A method for treating feedwater is provided. The method includes steps of introducing a treatment composition into a feedwater stream to provide a treated feedwater stream containing scale inhibitor at a concentration of at least about 0.1 ppm, and combining the treated feedwater stream with a detersive composition. The scale inhibitor can include a phosphate scale inhibitor, a carbonate scale inhibitor, or a combination of a phosphate scale inhibitor and a carbonate scale inhibitor. The detersive composition can be provided as a cleaning composition, a rinse agent composition, or a drying agent composition. A treatment composition and an apparatus for treating feedwater are provided.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: May 26, 2009
    Assignee: Ecolab Inc.
    Inventors: Ellen Voeller, legal representative, Michael E. Besse, Brenda L. Tjelta, William G. Mizuno
  • Patent number: 7531600
    Abstract: A storage stable water-in-oil emulsion composition that includes 5% to 99% by weight of a water-in-oil emulsion polymer including a polymer or copolymer containing repeat units from an acrylamide monomer; 0.1% to 10% by weight of one or more inorganic microparticles; 0.5% to 90% by weight of a carrier solvent; and 0 to 90% by weight of a fluidizing agent. The compositions can be used to treat aqueous systems including paper processing, sludge dewatering and for fracturing fluids for subterranean formations.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: May 12, 2009
    Assignee: Kroff Chemical Company
    Inventor: Paul Rey
  • Publication number: 20090101587
    Abstract: This invention relates to an improved method of inhibiting corrosion and calcium sulfate and calcium carbonate scaling in thermal and membrane desalination processes. The method includes adding a composition having an acrylic acid 2-acrylamido-2-methylpropyl sulfonic acid copolymer, optionally combined with an oligomeric phosphinosuccinic acid to seawater or recirculation brine in a desalting process to produce water for drinking and industrial applications. The method also includes adding a composition including mono, bis, and oligomeric phosphinosuccinic acid adducts to the desalting process.
    Type: Application
    Filed: October 22, 2007
    Publication date: April 23, 2009
    Inventors: Peter Blokker, Jasbir S. Gill, Paloma Lopez-Serrano
  • Publication number: 20090008335
    Abstract: Use of water-soluble copolymers, said copolymers composed of monoethylenically unsaturated, acid group-bearing monomers a) and at least one hydrophobic component b) which contains unsaturated double bonds in Bayer process caustic solutions as agents for reducing precipitation and formation of scales by inorganic and organic impurities.
    Type: Application
    Filed: February 28, 2005
    Publication date: January 8, 2009
    Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Christian FLOCKEN, Detlef KUBOTH, Rainer POESCHMANN
  • Publication number: 20080223791
    Abstract: A method for treating feedwater is provided. The method includes steps of introducing a treatment composition into a feedwater stream to provide a treated feedwater stream containing scale inhibitor at a concentration of at least about 0.1 ppm, and combining the treated feedwater stream with a detersive composition. The scale inhibitor can include a phosphate scale inhibitor, a carbonate scale inhibitor, or a combination of a phosphate scale inhibitor and a carbonate scale inhibitor. The detersive composition can be provided as a cleaning composition, a rinse agent composition, or a drying agent composition. A treatment composition and an apparatus for treating feedwater are provided.
    Type: Application
    Filed: March 21, 2008
    Publication date: September 18, 2008
    Applicant: ECOLAB INC.
    Inventors: WILLIAM G. MIZUNO, Michael E. Besse, Brenda L. Tjelta
  • Patent number: 7390415
    Abstract: Materials and a method are provided whereby polymers with least 0.5 mole % of the pendant group or end group containing —Si(OR?)3 (where R? is H, an alkyl group, Na, K, or NH4) are used to control aluminosilicate scaling in an industrial process having an alkaline process stream such as a pulping mill process stream. When materials of the present invention are added to the alkaline process stream, they reduce and even completely prevent formation of aluminosilicate scale on equipment surfaces such as evaporator walls and heating surfaces. The present materials are effective at treatment concentrations that make them economically practical.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: June 24, 2008
    Assignee: Cytec Technology Corp.
    Inventors: Donald P. Spitzer, Alan S. Rothenberg, Howard I. Heitner, Frank Kula
  • Publication number: 20080035565
    Abstract: The present invention relates to a procedure for elimination of boron from sea-water by reverse osmosis membranes characterised in that it comprises: adding to sea-water a composition consisting of at least one metal together with at least one antiscaling-dispersant agent, and a second phase in which an alkalinising agent is added until a pH of between 8-9.5 is achieved, which can furthermore consist of a third phase in which the fluoride content of the sea-water is increased following the second phase, or a third phase in which a high molecular weight alcohol is added to the water.
    Type: Application
    Filed: January 16, 2007
    Publication date: February 14, 2008
    Inventors: Palacios Donaque Enric, Farinas Iglesias Manuel, Palacios Jimenez Enric
  • Publication number: 20080011687
    Abstract: A method of inhibiting silica/silicate scale in aqueous systems is disclosed which comprises the addition to an aqueous system of a scale inhibiting amount of an ester of (A) a carboxylic acid functional polymer obtained by polymerizing an ethylenically unsaturated carboxylic monomer or copolymerizing the ethylenically unsaturated carboxylic monomer with one or more additional ethylenically unsaturated monomers and (B) a hydroxyl functional polyether obtained by reacting an alkyl alcohol with an alkylene oxide.
    Type: Application
    Filed: July 17, 2006
    Publication date: January 17, 2008
    Inventors: Floryan De Campo, Gary Woodward, Bruno Langlois
  • Patent number: 7285221
    Abstract: A composition for preventing formation of slime which comprises a chlorine-based oxidizing agent, a sulfamic acid compound, one of an anionic polymer or a phosphonic acid compound and a process for preventing formation of slime which comprises adding the composition to a water system are disclosed. Troubles caused by slime in cooling water systems, heat-storage water systems, water systems in manufacturing processes of paper and pulp, water systems for collecting dusts and scrubber water systems can be effectively prevented with the composition in a small amount.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: October 23, 2007
    Assignee: Kurita Water Industries, Ltd.
    Inventors: Takao Tsuneki, Naohiro Nagai, Akira Morita, Takahiko Uchida
  • Patent number: 7252770
    Abstract: The present invention is directed a multifunctional polymer capable of inhibiting both calcium carbonate and calcium phosphate scale. The multifunctional polymer contains at least one monomer unit from each of four groups: dicarboxylic acids, mono-carboxylic acids, nonionic monomers, and sulfonated or sulfated monomers. The polymer also inhibits many other alkaline earth scales, such as calcium sulfate scale and provides stabilization of minerals such as iron, zinc and manganese. The polymer is especially effective in highly stressed systems that contain high electrolyte concentrations and have a high number of cycles of concentration.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: August 7, 2007
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Anne-Marie B. Austin, Eric C. Ward
  • Patent number: 7204937
    Abstract: This invention relates to metal oxides dispersant compositions comprising (a) certain a metal oxides dispersant, and (b) an oxime. The invention also relates to a process for dispersing metal oxides in an aqueous system that involves adding the dispersant composition to the aqueous system.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: April 17, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Edward S. Beardwood, Kostan B. Charkhutian
  • Patent number: 7186394
    Abstract: The invention relates to a process to produce brine of improved purity wherein a salt source, contaminated with sulphate ions and alkaline (earth) metal ions, is dissolved in water in the presence of an effective amount of a retarding agent comprising at least one low and at least one high molecular weight retarding agent. Said retarding agent effectively reduces the level of the alkaline (earth) metal sulphate dissolved in the brine, particularly the amount of calcium and sulphate. Preferably, the combination of the low and high molecular weight retarding agents is synergetic in the reduction of dissolved alkaline-earth metal sulphate.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: March 6, 2007
    Assignee: Akzo Nobel N.V.
    Inventors: Mateo Jozef Jacques Mayer, René Lodewijk Maria Demmer
  • Patent number: 7179384
    Abstract: A method to control a cooling water system based on the rate of consumption of fluorescent polymer is described and claimed. The method includes providing a cooling water system and a water treatment product including at least one fluorescent polymer and a fluorescent tracer. Measuring the fluorescence of the fluorescent polymer and calculating its rate of consumption provides a way of determining whether to adjust one or more operating parameters in the cooling water system.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: February 20, 2007
    Assignee: Nalco Company
    Inventors: Barbara E. Moriarty, Narasimha M. Rao, Kun Xiong, Tzu-Yu Chen, Shunong Yang, Mita Chattoraj
  • Patent number: 7115201
    Abstract: A method of treating mine drainage water including the step of adding a scale control agent to the mine drainage water and, optionally, adding an oxidizing agent to the mine drainage water and/or precipitating and settling the metals in their hydroxide form from the water. The treated water may be safely returned to the environment.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: October 3, 2006
    Assignee: Kroff Chemical Company, Inc.
    Inventor: Paul Rey
  • Patent number: 7087189
    Abstract: The present invention is directed a multifunctional polymer capable of inhibiting both calcium carbonate and calcium phosphate scale. The multifunctional polymer contains at least one monomer unit from each of four groups: dicarboxylic acids, mono-carboxylic acids, nonionic monomers, and sulfonated or sulfated monomers. The polymer also inhibits many other alkaline earth scales, such as calcium sulfate scale and provides stabilization of minerals such as iron, zinc and manganese. The polymer is especially effective in highly stressed systems that contain high electrolyte concentrations and have a high number of cycles of concentration.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: August 8, 2006
    Assignee: National Starch Chemical Investment Holding Co
    Inventors: Anne-Marie B. Austin, Eric C. Ward