Phosphorus Containing Patents (Class 210/699)
  • Patent number: 11359126
    Abstract: The present disclosure provides a formulation and methods for simultaneously dissolving metal sulfide scales, inhibiting acid gas corrosion, and inhibiting the formation of calcite and barite in a system having low or high shear stress conditions due to fluid movement, in which the formulation contains a THP+salt, one or more corrosion inhibitors, one or more scale inhibitors, and one or more acid corrosion inhibitors. The formulation may be applied to the system in diluted or undiluted form, and continuously or in batch style.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: June 14, 2022
    Assignee: Baker Hughes Holdings LLC
    Inventors: Patrick James Rodgers, Brian Lundy, Sunder Ramachandran, David J. Poelker, James D. Ott
  • Patent number: 11040309
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in treating reverse osmosis membranes.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: June 22, 2021
    Assignees: JUSTEQ, LLC, ACCULAB CO., LTD.
    Inventors: Sang Hea Shim, Chung Soo Kim
  • Patent number: 10988626
    Abstract: A corrosion inhibiting composition includes one or more of a plurality of carriers, each having a carrier body and an organic corrosion inhibitor, such that the carrier body encapsulates the organic corrosion inhibitor, and the carrier body is formed of a degradable material. Coatings and methods for inhibiting corrosion on a metal substrate are also described herein.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: April 27, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Todd Andrew Fitz, Mariko Elaine Berg
  • Patent number: 10806147
    Abstract: A method for reducing the effects of biological contamination in a hydrocarbon-containing system comprising the steps of continuously adding a formulation comprising tris(hydroxymethyl)phosphine or a tetrakis(hydroxymethyl)phosphonium salt to the system for one day or more; monitoring the efficacy of the continuous treatment by an assessment of the extent to which there is any effect on the environment that is attributable to metabolic activity of active microbes present in the system; wherein the tris(hydroxymethyl)phosphine or tetrakis(hydroxymethyl)phosphonium salt is added at a concentration of from 1 to 30 ppm based on the total volume of aqueous fluid added to the system, and wherein the formulation is added to the system at a stage to minimize incompatibility with any other chemicals that are added to the aqueous fluid.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: October 20, 2020
    Assignee: RHODIA OPERATIONS
    Inventors: Chris Jones, Stephanie Edmunds, Gareth Collins
  • Patent number: 10683576
    Abstract: An additive comprising one or more C3-C12 hydroxycarboxylic acids and/or one or more C3-C12 hydroxycarboxylic acid salts may be added to an aqueous system having galvanized metallurgy or a carbon steel surface in an effective amount to passivate a galvanized coating on the metallurgy or to decrease white rust formation or other types of corrosion upon the galvanized metallurgy or carbon steel surface in an aqueous system. In a non-limiting embodiment, the C3-C12 hydroxycarboxylic acid or the C3-C12 hydroxycarboxylic acid salt additive may utilize the zinc in the galvanized coating to achieve passivation. The passivation may occur while the system is shut down or in service. The aqueous system may be or include a cooling tower, a cooling water system, and combinations thereof. The additive may be used with or in the absence of a phosphorous-containing compound.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: June 16, 2020
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: Mary Jane Legaspi Felipe, Timothy Ray Underwood, Albert Sidney Dunn, David N. Fulmer, Montgomery A. Pifer, Stephen J. Wiacek, Khac Truc Nguyen, William Mansfield, William Watson, Chelsea Eaton
  • Patent number: 10597582
    Abstract: Composition for the removal or inactivation of hydrogen sulfide or soluble sulfide ion other species comprising ionizable sulfur (e.g., mercaptans, thiols, etc.) using compositions containing acrylate and/or derivatives thereof are provided. Methods for the removal or inactivation of hydrogen sulfide or other sulfur species in oilfield sites and other related applications using compositions containing acrylate and/or derivatives thereof are provided.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: March 24, 2020
    Assignee: Multi-Chem Group, LLC
    Inventors: Liu Shi, Funian Zhao, Liangwei Qu, Michael Harless, Ron Hoppe
  • Patent number: 9969928
    Abstract: Compositions and methods for formulating treatment fluids that comprise a surfactant having reduced and delayed adsorption. In one embodiment, the method comprises: providing a fluid comprising: an aqueous base fluid, a surfactant, and a polyelectrolyte; introducing the fluid into a wellbore penetrating at least a portion of a subterranean formation; and contacting at least a portion of the subterranean formation with the polyelectrolyte. In another embodiment, the method comprises providing a fluid comprising: an aqueous base fluid, a surfactant, and a polyelectrolyte; injecting the fluid into a wellbore penetrating at least a portion of a subterranean formation at a pressure sufficient to create or enhance one or more fractures within the subterranean formation; and contacting at least a portion of the subterranean formation with the polyelectrolyte.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: May 15, 2018
    Assignee: Multi-Chem Group, LLC
    Inventors: Kai He, Liang Xu
  • Patent number: 9913928
    Abstract: The present invention relates to a macroporous, resorbable and injectable apatitic calcium-phosphate cement with a high compressive strength useful as bone cement and releasing a bone resorption inhibitor, preparation method and uses thereof.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: March 13, 2018
    Assignees: GRAFTYS, UNIVERSITE DE NANTES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.)
    Inventors: Jean-Michel Bouler, Bruno Bujoli, Pascal Janvier, Ibrahim Khairoun, Jean-Noël Argenson
  • Patent number: 9834462
    Abstract: Provided is a method for removing a scale in a steam generation facility, whereby it becomes possible to remove a scale deposited on the inside of a boiler vessel during the operation of a boiler without causing corrosion of the boiler. A method for removing a scale in a steam generation facility is disclosed, wherein in the steam generation facility, a pH of boiler water is adjusted to 11.3 or more, and a polyacrylic acid having a weight average molecular weight that is 0.50 to 2.00 times a reference weight average molecular weight as calculated from the following calculation formula (1), or a salt thereof, is added in accordance with the pH value of the boiler water during the operation of a boiler, thereby removing a scale deposited on the inside of a boiler vessel: Reference weight average molecular weight=?8462×{(pH value)?11.3}+61538??(1).
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: December 5, 2017
    Assignee: KURITA WATER INDUSTRIES, LTD.
    Inventors: Mizuyuki Sakai, Yukimasa Shimura
  • Patent number: 9499445
    Abstract: The present invention relates to a chelated fertilizer composition for enriching Iron and Phosphorus content in agriculture/horticulture crops and plants through foliar application. The fertilizer composition is prepared using compounds comprising chelating agents and Ferric Oxide (Fe2O3). The chelation of Fe by disodium salt of Hydroxy Ethylidene Di Phosphonic Acid (Na2 HEDP) developed 17% to 18% Fe-HEDP and 31% Phosphorus pentoxide (P2O5). The final chelated fertilizer composition obtained is in powder form and is 100% water-soluble concentrate. The chelated fertilizer composition can be used to cure Iron and Phosphorus deficiency in crops and plants, increase yield with more Iron and Phosphorus content, thus reducing the risk of Iron and Phosphorus deficiency in humans.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: November 22, 2016
    Inventor: Sundaresan Subramanyam
  • Patent number: 9382377
    Abstract: A polymer mixture in solid or aqueous form includes a content of from 5 to 95% by weight of a first polymer and a content of from 5 to 95% by weight of a second polymer. The first polymer is a water-soluble or water-dispersible polymer having a weight-average molecular weight of 1000 to 20 000 g/mol. The second polymer is a water-soluble or water-dispersible polymer having a weight-average molecular weight of 1000 to 50 000 g/mol. The polymer mixture can inhibit precipitation and sedimentation of calcium salts and magnesium salts in water-bearing systems.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: July 5, 2016
    Assignee: BASF SE
    Inventors: Jürgen Detering, Torben Gädt, Stephan Nied, Andreas Kempter, Bolette Urtel, Jessica Neumann
  • Patent number: 9273269
    Abstract: Provided are scale-inhibition compositions comprising (a) a first acrylic acid polymer having an average molecular weight of about 3000 to about 6000; (b) a second acrylic acid polymer having an average molecular weight of about 6000 to about 10000; (c) an aminocarboxylic acid selected from methylglycine diacetic acid (MGDA), glutamic acid diacetic acid (GLDA), diethylene triamine pentaacetic acid (DTPA), hydroxyethyl ethylene diamine triacetic acid (HEDTA), ethylenediaminetetraacetic acid (EDTA), and a combination thereof; and (d) a phosphonic acid selected from 1-hydroxyethane 1,1-diphosphonic acid (HEDP), amino tris(methylenephosphonic acid) (ATMP), ethylenediamine tetra(methylene phosphonic acid) (EDTMP), tetramethylenediamine tetra(methylene phosphonic acid) (TDTMP), hexamethylenediamine tetra(methylene phosphonic acid) (HDTMP), diethylenetriamine penta(methylene phosphonic acid) (DTPMP), and a combination thereof.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: March 1, 2016
    Assignee: Diversey, Inc.
    Inventors: Anant Kondiram Parte, Prashant Kumar Pandey, Farida Hakim Tinwala
  • Patent number: 9074162
    Abstract: Methods employing detergent compositions effective for reducing soil redeposition and accumulation on hard surfaces are disclosed. The alkaline detergent compositions employ vinylidene diphosphonic acid polymers, including unsaturated monocarboxylic acid polymers with a phosphonate end group, preferably a vinylidene diphosphonic acid end group, in combination with an alkali metal hydroxide or other alkalinity source. The alkaline detergent compositions preferably further employ threshold agents. The alkaline detergent compositions reduce the amount of phosphorus-containing materials and polyacrylate materials required for water conditioning, soil removal and soil antiredeposition.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: July 7, 2015
    Assignee: Ecolab USA Inc.
    Inventors: Carter M. Silvernail, Monique Roerdink-Lander
  • Publication number: 20150027956
    Abstract: The invention relates to an aqueous solution of acrylic acid polymers, obtainable by polymerization of acrylic acid in feed mode with peroxodisulfate as initiator in the presence of hypophosphite in water as solvent, wherein (i) water and optionally one or more ethylenically unsaturated comonomers are initially charged, and (ii) acrylic acid in acidic, unneutralized form, optionally one or more ethylenically unsaturated comonomers, aqueous peroxodisulfate solution and aqueous hypophosphite solution are added continuously, and (iii) a base is added on completion of the acrylic acid feed to the aqueous solution, wherein the comonomer content does not exceed 30% by weight, based on total monomer content.
    Type: Application
    Filed: October 14, 2014
    Publication date: January 29, 2015
    Applicant: BASF SE
    Inventors: Juergen DETERING, Bolette URTEL, Stephan NIED, Ewald HEINTZ
  • Patent number: 8936728
    Abstract: The clean-up of crude oil is accomplished using an oil solubilizing agent from a class of onium halides to solubilize the oil in water. The oil solubilizing agent includes a quaternary phosphonium halide, a quaternary ammonium halide, or a ternary sulfonium halide. The onium halide also includes a hydrophobic hydrocarbon chain having from 10 to 24 carbon atoms, and can include both aromatic and aliphatic components.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: January 20, 2015
    Inventor: Debra A. Riggs
  • 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: 20140338915
    Abstract: The present invention is directed to a cross-linked scale control agent particle comprising: a scale control agent and a cross-linker. The scale control agent is cross-linked by the cross-linker. The present invention is also directed to a cross-linked organic-based crystalline inhibitor particle comprising: an organic-based crystalline inhibitor and a cross-linker. The organic-based crystalline inhibitor is cross-linked by the cross-linker. The present invention is also directed to the use of cross-linkers which can also act as benefit agents and to the use of capping and extension agents which act as further benefit agents The present invention is further directed to a particle comprising more than one cross-linked active agents; the active agent may be a combination of a scale control agent and an organic-based crystalline inhibitor.
    Type: Application
    Filed: December 20, 2012
    Publication date: November 20, 2014
    Inventors: Paul Michael Ferm, Klin Aloysius Rodrigues, John Socrates Thomaides, Stuart Holt, Jian Zhou, Lei Zhang, Jannifer Sanders
  • Publication number: 20140332471
    Abstract: A pentaerythritol core, phosphonic acid terminated dendrimer, its preparation method and application are provided. A preparation method of the pentaerythritol core, phosphonic acid terminated dendrimer (PETA-ADA-12PO3H2) comprises steps of processing Michael addition reaction on pentaerythritol tetraacrylate (C(CH2OCOCH2=CH2)4) and alkylidene diamine (NH2CH2(CH2)nNH2), wherein n is an integer from 1 to 5, so as to obtain pentaerythritol core, amino group terminated dendrimer, and modifying the amino group by methylene phosphonic acid to obtain the PETA-ADA-12PO3H2 having a chemical formula of C[CH2OCOCH2CH2N(CH2PO3H2)CH2(CH2)nN(CH2PO3H2)2]4, wherein n is an integer from 1 to 5.
    Type: Application
    Filed: September 9, 2013
    Publication date: November 13, 2014
    Applicant: Tongji University
    Inventors: Bingru Zhang, Fengting Li, Hongmei You
  • Patent number: 8758556
    Abstract: A method for inhibiting the formation, deposition and adherence of calcium salt scale to metallic and other surfaces in the equipment, vessels and/or piping of a chemical pulp process facility comprising adding an effective scale inhibiting amount of a composition to the alkaline aqueous mixture in the digester of said chemical pulping process. Said composition consists of at least one phosphonate component (I) and at least one component (II) consisting of at least one carboxylated fructan compound.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: June 24, 2014
    Assignee: Dequest AG
    Inventor: Sheldon Phillip Verrett
  • Patent number: 8741151
    Abstract: The scale inhibitors in a variety of aqueous systems, or a part or sample thereof, also including one or more dissolved interfering ions, are separated therefrom and analyzed, such scale inhibitors comprising a polymer containing at least one anionic functional group, e.g., a strong acid functional group or a phosphonate or phosphate ester, and such analysis including treating these aqueous systems with a cationic substrate or a free cation.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: June 3, 2014
    Assignee: Rhodia UK Limited
    Inventors: Mike Hails, Chris Jones
  • 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
  • Publication number: 20130334141
    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: Application
    Filed: March 28, 2013
    Publication date: December 19, 2013
    Applicant: ProChemTech International, Inc.
    Inventor: Timothy Edward KEISTER
  • Publication number: 20130299432
    Abstract: Scale control agents comprising organic phosphonates, either alone or in mixtures with inorganic phosphonates and also optionally polymers, such as low molecular weight polymeric dispersants. The scale control agents may be applied to inhibit scale formation or deposition in highly acidic aqueous systems by adding these agents to such systems in amounts effective to inhibit metal sulfate scale formation.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 14, 2013
    Inventors: Sachin Borkar, Michael James Bluemle, Lawrence J. Andermann, JR.
  • Publication number: 20130075337
    Abstract: A method for dispersing oil spilled into the aqueous environment comprising the treatment of the spilled oil with an oil dispersant composition comprising a phospholipid and a polysaccharide derivative is disclosed.
    Type: Application
    Filed: February 10, 2012
    Publication date: March 28, 2013
    Applicant: THE UNIVERSITY OF SOUTHERN MISSISSIPPI
    Inventors: Robert Y. Lochhead, Sarah E. Morgan, Samy Madbouly, Yan Zong
  • Patent number: 8404181
    Abstract: The present invention relates to a method of preventing or alleviating the problems associated with corrosion and to novel formulations for use in such a method.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: March 26, 2013
    Assignee: Rhodia UK Limited
    Inventors: Chris Jones, Julie Hardy
  • Publication number: 20130035274
    Abstract: A composition includes an anionic polysaccharide hybrid polymer composition and 2-phosphonobutane-1,2,4-tricarboxylic acid. In one embodiment, the polysaccharide hybrid polymer composition includes a polysaccharide residue present in an amount from approximately 5% to approximately 90% by weight of the polysaccharide hybrid polymer composition and a residue of at least one ethylenically unsaturated monomer present in an amount from approximately 10% to approximately 75% by weight of the polysaccharide hybrid polymer composition.
    Type: Application
    Filed: July 30, 2012
    Publication date: February 7, 2013
    Applicant: ECOLAB USA INC.
    Inventors: Carter Silvernail, Erik C. Olson
  • Publication number: 20120273430
    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: Application
    Filed: April 29, 2011
    Publication date: November 1, 2012
    Applicant: PROCHEMTECH INTERNATIONAL, INC.
    Inventor: Timothy Edward Keister
  • Patent number: 8202426
    Abstract: A method of removing phosphonates from water includes directing the water into a first settling zone. The water is then directed to a membrane filtration zone and is filtered therein to produce a concentrate containing phosphonates. The concentrate containing phosphonates is then contacted with sludge such that at least some of the phosphonates in the concentrate are adsorbed onto the sludge. Flocculant is added to the sludge and the concentrate to form a floc-mixture which is directed to a second settling zone to form treated concentrate.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: June 19, 2012
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Catherine Daines-Martinez, Jean-Christophe Schrotter, Karine Drouet, Abdelkader Gaid
  • Publication number: 20120048809
    Abstract: The clean-up of crude oil is accomplished using an oil solubilizing agent from a class of onium halides to solubilize the oil in water. The oil solubilizing agent includes a quaternary phosphonium halide, a quaternary ammonium halide, or a ternary sulfonium halide. The onium halide also includes a hydrophobic hydrocarbon chain having from 10 to 24 carbon atoms, and can include both aromatic and aliphatic components.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 1, 2012
    Inventors: Olen L. Riggs, JR., Debra A. Riggs
  • 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
  • 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: 7803278
    Abstract: The present invention provides a formulation for use in the treatment of corrosion and metal sulphide scale deposits in aqueous systems, said formulation comprising a tetrakis (hydroxyorgano) phosphonium salt (THP+ salt) and a primary, secondary or tertiary alcohol having an acetylenic bond in the carbon backbone. The invention also provides the use of such a formulation for treating corrosion of mild steel, copper or aluminium, and a method for treatment of an aqueous system containing or in contact with a metal sulphide scale while concomitantly inhibiting the corrosion of surfaces in contact with said aqueous system, which method comprises the addition to said aqueous system of a scale and corrosion inhibiting amount of such a formulation.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: September 28, 2010
    Assignee: Rhodia Operations
    Inventors: Robert Eric Talbot, Jason Grech
  • Patent number: 7780859
    Abstract: The invention provides the use of a water-soluble biocide as an uncoupling agent at an effective amount to control bacterial biomass in an aqueous system. The invention also provides a method for controlling the growth of bacterial biomass in an aqueous system. The method comprises adding to, or contacting with, the aqueous system an effective amount of an uncoupling agent which is a water-soluble biocide. In a preferred embodiment the method comprises contacting an effective amount of an uncoupling agent which is a water-soluble biocide directly with the bacterial biomass in an aqueous system.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: August 24, 2010
    Assignee: Rhodia Operations
    Inventors: Yvette Pescher, Robert Eric Talbot, Luc Olivier Louvel, Agnes Pilas-Begue, Laetitia Catinon, Gilles Michael Moreau
  • 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
  • Publication number: 20090294372
    Abstract: The current invention relates to the inhibition of scale deposits in an acidic slurry or solution. 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 during the processing of ore. The production of scale in an acidic environment is difficult because of the acidic solution neutralizing most known inhibitors. The claimed invention has a significant decrease in the scale production allowing for reduced down time of systems for de-scaling procedures.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 3, 2009
    Inventors: Jasbir S. Gill, Daniel N.T. Hay
  • 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
  • Patent number: 7601266
    Abstract: A biofilm reducing agent (BRA) and a mineral deposit distorting agent (MDDA) are admixed to irrigation water in amounts sufficient to substantially eliminate biofilm formation in the emitters (14) of an irrigation system (10) and produce amorphous mineral deposits in the emitters that are easily washed away by the irrigation water as it flows through the emitters (14). The BRA may be an oxidizer selected from the group consisting of chlorine, ozone, chlorine dioxide, hydrogen peroxide, hydroxy peracitic acid, iodine, bromine, hydrogen dioxide, chlorate salts, chlorite salts and hypochlorite compounds and mixtures thereof. The MDDA is a phosphonate selected from the group comprising AMP, ATMP, HEDP, EDTMPA, HMDTMPA, DETPMPA, BHMPTMPA, PBTC, HPA, PCA, NTMP, and DTPMP.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: October 13, 2009
    Assignee: CH2O Incorporated
    Inventor: Carl E. Iverson
  • 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
  • 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
  • Publication number: 20080223790
    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: Application
    Filed: September 24, 2004
    Publication date: September 18, 2008
    Inventors: Nicholas R. Blandford, Libardo A. Perez, William S. Carey
  • Patent number: 7404902
    Abstract: A composition for treating water contained in enclosures, such as swimming pools, spas, whirlpool tubs and cooling towers, which includes at least one boron compound, cyanuric acid, at least one mineral remover and at least one clarifier is provided. A composition and method for treating salt water contained in enclosures using halogen generators to generate sterilizing halogen in situ, wherein the method includes adding to the water effective amounts of a composition having at least one boron compound, cyanuric acid, at least one mineral remover and at least one clarifier, such that they are present in the water simultaneously is also provided.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: July 29, 2008
    Assignee: Haviland Consumer Products, Inc.
    Inventors: Don H. Girvan, Paul J. Nederveld, Arthur F. Harre, III
  • Publication number: 20080169243
    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 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: January 11, 2007
    Publication date: July 17, 2008
    Inventors: Bhasker B. Dave, Narasimha M. Rao, Shunong Yang, David A. Grattan, Peter Blokker
  • Publication number: 20080135476
    Abstract: The invention provides the use of an effective amount of a non-oxidising water-soluble biocide in the improvement of sludge quality by reducing the sludge tendency towards bulking, wherein the biocide comprises an alkyl-substituted phosphonium compound, an alkyl-substituted phosphine, an alkyl-substituted phosphine condensate, or a polymeric quaternary ammonium compound.
    Type: Application
    Filed: June 21, 2005
    Publication date: June 12, 2008
    Inventors: Yvette Pescher, Robert Talbot, Luc Louvel, Agnes Pilas-Begue
  • 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: 7252769
    Abstract: Methods to control manganese deposition in an aqueous system, which include introducing a cerium-containing composition, and optionally another deposit control agent, to the aqueous system, are described. Also described, are cerium-containing compositions that promote the manganese stabilization performance of polymeric dispersants and phosphonic acids commonly used in water treatment applications. Cerium-containing compositions that can inhibit the oxidative degradation of deposit control agents are also described.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: August 7, 2007
    Assignee: Buckman Laboratories International, Inc.
    Inventor: Wayne H. Dickinson
  • 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: 7144513
    Abstract: The invention relates to a method that reduces limestone scale deposit on surfaces and in heating elements, especially, for drinking water in foodservice vending and dispensing machines without affecting the water quality. The method includes passing the water through metal particulate and polyphosphates to remove minerals therefrom and thus reduce scale deposits upon water contacted portions of such machines.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: December 5, 2006
    Assignee: Nestec S.A.
    Inventors: Alexander A. Sher, Richard M. Clarke, Dominick Damiano
  • 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: 6995120
    Abstract: Barium sulfate and/or calcium carbonate scale inhibitor composition composed of a water-soluble polymer having incorporated phosphate functionality, the polymer being formed from at least one ethylenically unsaturated carboxylic acid monomer, at least one ethylenically unsaturated vinyl sulfonate monomer, or a mixture thereof. The scale inhibitor composition can be used as a means of detecting inhibitor composition in downhole and topside oilfield treatments by means that are faster and more accurate than turbidometric measurement.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: February 7, 2006
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Martin Crossman, Stuart Peter Robert Holt