Patents Assigned to Nalco Company
  • Patent number: 9243814
    Abstract: A device for measuring oxidation-reduction potential at operating temperature and pressure in hot water systems is disclosed and claimed. The device includes a flow-through cell, a sensor, and a reference electrode. The components of the device work in conjunction with the other components and have electrical connections that transmit signals to a controller. The controller calculates and determines adjustments to feedwater chemistry for the hot water system.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: January 26, 2016
    Assignee: NALCO COMPANY
    Inventors: Peter D. Hicks, M. Alexandra Knoth
  • Patent number: 9233338
    Abstract: This invention provides novel compositions comprising substituted polyamines as acid gas scrubbing solutions and methods of using the compositions in an industrial system. The invention relates to the use of such polyamine compounds in industrial processes to remove acidic contaminants from natural and industrial fluid streams, such as natural gas, combustion gas, natural gas, synthesis gas, biogas, and other industrial fluid streams. The compositions and methods of the invention are useful for removal, absorption, or sequestration of acidic contaminants and sulfide contaminants including CO2, H2S, RSH, CS2, COS, and SO2.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: January 12, 2016
    Assignee: NALCO COMPANY
    Inventors: Alan M. Blair, Keith N. Garside, William J. Andrews, Kailas B. Sawant
  • Patent number: 9227241
    Abstract: A composition for use in investment casting shells and a method of making the composition is disclosed. The composition includes an engineered binder and a refractory flour. The engineered binder comprises a siliceous material and at least one organic component selected from: at least one type of wood pulp; at least one species of cellulose fiber; and combinations thereof. A particular benefit of the investment shell composition is simultaneously increased permeability and load bearing capacity.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: January 5, 2016
    Assignee: Nalco Company
    Inventor: Sankar Bhattacharja
  • Patent number: 9212305
    Abstract: A composition comprising the following formula and optionally salts thereof is disclosed and claimed.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: December 15, 2015
    Assignee: Nalco Company
    Inventors: Erick J. Acosta, Peter A. Webber
  • Patent number: 9206346
    Abstract: The present disclosure is directed to compositions and methods that may be used for enhanced oil recovery, for modifying the permeability of subterranean formations and for increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations. The compositions may include, for example, expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 5,000 microns and a cross linking agent content of from about 100 to about 200,000 ppm of hydrolytically labile silyl ester or silyl ether crosslinkers and from 0 to about 300 ppm of non-labile crosslinkers.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: December 8, 2015
    Assignee: Nalco Company
    Inventors: Pious V. Kurian, Kin-Tai Chang, Manian Ramesh, Olga E. Shmakova-Lindeman
  • Patent number: 9199855
    Abstract: The invention provides methods and compositions for improving the rheology of red mud removed from Bayer Process liquor. The method includes adding a flocculant and a cross-linked polysaccharide to the liquor. This combination separates the red mud from the liquor but also prevents the red mud from becoming too thick. By preventing excessive thickness, the method allows for the formation of extremely dense amounts of red mud even in primary settlers because the dense red mud can still flow. As a result a user can simultaneously enjoy both easy handling of red mud and also high recovery rates of valuable alumina and caustic from the red mud.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: December 1, 2015
    Assignee: Nalco Company
    Inventors: Carl Urbani, John D Kildea, Ryan Chester, Jing Wang
  • Patent number: 9194789
    Abstract: An apparatus and method for measuring and monitoring the corrosion potential of engineering alloys used in aqueous systems is disclosed and claimed. The method is applicable for a variety of alloys including, but not limited to, copper-based, iron-based, nickel-based, other metallic-based alloys, and their combinations. The corrosion potential is typically determined by measuring a voltage between a specific material in the described oxidation-reduction potential measuring device and a reference electrode. Corrosion potentials for specific materials of construction may be used for diagnostic or control purposes.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 24, 2015
    Assignee: NALCO COMPANY
    Inventor: Peter D. Hicks
  • Patent number: 9193898
    Abstract: A water-in-oil emulsion composition and method of production is disclosed. The composition may comprise a monomer phase, an organic phase, at least one initiator, and an inverting phase. The monomer phase may further comprise at least one monomer, water, ammonium chloride, sodium 2-acrylamido-2-methyl-1-propanesulfonate, tetrasodium ethylenediaminetetraacetate, and at least one water soluble ethylenically unsaturated monomer. The organic phase may further comprise at least one hydrophobic solvent, lecithin, and a polyoxyethylene derivative of a sorbitan ester. The at least one monomer may be selected from the group consisting of an acrylic monomer, an acrylamide monomer, and combinations thereof.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: November 24, 2015
    Assignee: Nalco Company
    Inventors: Kin-Tai Chang, Kirk E. Wells, Jesse V. Mello
  • Patent number: 9187327
    Abstract: A method for minimizing the addition of water to a phosphoric acid production process is described. The method uses phosphoric acid to make down a flocculant that is added to the process in order to promote filtration or clarification of crude phosphoric acid. Preferably, the phosphoric acid is a crude, clarified phosphoric acid that is recycled from the phosphoric acid production process itself.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: November 17, 2015
    Assignee: Nalco Company
    Inventors: Ronald V. Davis, Wayne L. Moss, Michael G. Strominger, Randon Renzello, Thomas A. Faigl, Daniel N. T. Hay
  • Patent number: 9181657
    Abstract: The invention provides a method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in a papermaking process. The method improves the efficiency of drainage aids or wet web strength aids or wet strength aid by coating at least some of the filler particles with a natural gum and with a material that prevents the filler materials form adhering to those additives. The drainage additive or wet web strength additive or wet strength aid holds the cellulose fibers together tightly and is not wasted on the filler particles.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: November 10, 2015
    Assignee: Nalco Company
    Inventors: David J. Castro, Weiguo Cheng
  • Patent number: 9174852
    Abstract: The invention provides methods and compositions for improving the production of alumina trihydrate. The invention involves adding one or more cross-linked polysaccharides to a filter used to separate solids from liquid in the Bayer process. The one or more polysaccharides can be a cross-linked polysaccharide (such as cross-linked dextran or cross-linked dihydroxypropyl cellulose). The cross-linked polysaccharides can impart a number of advantages including greater flow rate and lower residual moisture in the resulting cake.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: November 3, 2015
    Assignee: NALCO COMPANY
    Inventors: Ryan Chester, Jing Wang, John D Kildea
  • Patent number: 9161543
    Abstract: A composition and methods of its use, the composition comprising: a halogen source, urea, and an additional halogen stabilizer excluding urea, optionally an alkali in a concentration sufficient to provide said composition with a pH of greater than 10; and optionally excluding a stabilized bromine compound from said composition is disclosed. Additionally, a method for reducing biological activity in a process stream is disclosed. The method comprises: providing a composition to a process stream, wherein said composition contains: a halogen, urea, and an additional halogen stabilizer excluding urea, optionally an alkali in a concentration sufficient to provide said composition with a pH of greater than 10; and optionally excluding a stabilized bromine compound from said composition. The invention is also directed to compositions and methods of their use as effective biocidal agents for water streams.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: October 20, 2015
    Assignee: NALCO COMPANY
    Inventors: Laura E. Rice, Andrew J. Cooper, Elisa M. Luth, Wen Li Tu
  • Patent number: 9150776
    Abstract: A hydrocarbon from a subterranean formation can be recovered by contacting the hydrocarbon with water or steam and one or more additives. The hydrocarbon can be selected from heavy or light crude oil, bitumen, an oil sand ore, a tar sand ore, and combinations thereof. The additive can be, for example, an aromatic hydrocarbon. The water or steam and the additive can be injected into the subterranean formation. Compositions or mixtures include hydrocarbons, water or steam, and additives.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: October 6, 2015
    Assignee: Nalco Company
    Inventor: Kimberly Jantunen Cross
  • Patent number: 9150468
    Abstract: Disclosed is a method of producing an organic compound. The method uses a metathesis catalyst in a coupling reaction of an olefin. The method comprises the steps of introducing the olefin into a container; either placing the container under vacuum or bubbling a gas through the olefin; adding an additive with the olefin; mixing the olefin and the additive, the mixing creating a mixture; adding an amount of the metathesis catalyst to the mixture, the amount being less than about 100 ppm by weight of the mixture; and optionally heating the mixture to a temperature, the temperature being greater than room temperature.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: October 6, 2015
    Assignee: Nalco Company
    Inventors: Bryan M Schertzer, Karol L. Grela, Justyna Czaban
  • Patent number: 9145646
    Abstract: Disclosed herein are compositions and methods to increase paper machine performance and enhance sizing. The compositions include a sizing agent, an emulsifier, and an aqueous component. The emulsifier may be an aldehyde-functionalized polymer. The sizing agent may be selected from rosin size, an alkyl ketene dimer, an alkenyl succinic anhydride, and any combination of these sizing agents.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: September 29, 2015
    Assignee: Nalco Company
    Inventors: Bradley J. Benz, William C. Johnson, Mei Liu, Shawnee Wilson, Mark Grimm, Michael R. St. John
  • Patent number: 9134238
    Abstract: The invention provides a method and apparatus for determining the amount of various materials in a liquid sample. Because the apparatus is particularly resilient it can be used repeatedly with very harsh liquid samples such as boot water from an oil refinery. The apparatus uses at least one volume and/or concentration independent optical analysis method to determine at least one of: the pH, amount of chloride, and/or amount of iron in the sample. The optical property can be colorimetric, fluorescent or both and result from adding dyes, complexing agents, turbidity inducing compounds, and other optically effecting reagents to the sample. Because the measurements are concentration and volume independent they can be done continuously, quickly, and avoid the inconvenient start and stop procedures in prior art measurement regimens.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: September 15, 2015
    Assignee: NALCO COMPANY
    Inventors: Rodney H. Banks, Steven R. Ciota, Sascha J. Welz
  • Patent number: 9133046
    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: Grant
    Filed: June 30, 2011
    Date of Patent: September 15, 2015
    Assignee: Nalco Company
    Inventors: Peter Blokker, Jasbir S. Gill, Paloma López-Serrano
  • Patent number: 9134289
    Abstract: The invention is directed towards methods and apparatus for accurately detecting the presence and concentration of an oxidant in a turbid water sample. This method is very helpful in allowing accurate and efficient (not too much nor too little) amounts of microbe killing oxidants to be introduced to water supplies that require oxidants but which at present cannot be measured properly. The method comprises the steps of: passing the water through at least one filter array, passing the filtered water to an analyzer, and then returning from the analyzer a measurement of the concentration. The filter array comprises at least one filter constructed and arranged to remove turbidity inducing material but not oxidant from the water sample. The analyzer can be a commonly commercially available analyzer that currently cannot accurately measure the oxidant concentration if the water had not been so filtered.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 15, 2015
    Assignee: NALCO COMPANY
    Inventors: Stephen Bernard Ashton, Martin Seifert
  • Patent number: 9120965
    Abstract: A composition comprising crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation is disclosed and claimed. This invention further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO2 or CO2 Water Alternating Gas flooding at low pH and increases the mobilization and/or recovery rate of hydrocarbon fluids present in the subterranean formations.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: September 1, 2015
    Assignee: Nalco Company
    Inventors: Pious Kurian, Mingli Wei, Kin-Tai Chang
  • Patent number: 9102995
    Abstract: The invention provides methods and compositions for improving the production of alumina hydrate. The invention involves adding one or more cross-linked ethylsulfonated polysaccharides to liquor or slurry in the fluid circuit of the production process. The one or more polysaccharides include cross-linked dextran or cross-linked dihydroxypropyl cellulose. The various polysaccharides can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 11, 2015
    Assignee: NALCO COMPANY
    Inventors: Heinrich E. Bode, John D. Kildea, Jing Wang