Patents Assigned to Nalco Company
  • Publication number: 20140318724
    Abstract: The invention provides methods and compositions for enhancing the digestion of pulp in a chemical pulping process. The method uses ultra-low, economically feasible dosages of BH applied right before the pulping process begins, in a stable alkaline solution fed into white liquor line, to improve the process by saving pulping chemicals, increasing pulp brightness and yield and reducing the kappa number.
    Type: Application
    Filed: July 14, 2014
    Publication date: October 30, 2014
    Applicant: NALCO COMPANY
    Inventors: Prasad Y. Duggirala, Sergey M. Shevchenko
  • Publication number: 20140315320
    Abstract: The invention is directed towards methods and compositions for identifying the amount of hydrofluoric acid in a buffered oxide etching composition. In buffered oxide etching compositions it is very difficult to measure the amount of hydrofluoric acid because it has varying equilibriums and it is toxic so it hard to handle and sample. When used to manufacture microchips however, incorrect amounts of hydrofluoric acid will ruin those chips. The invention utilizes a unique method of spectrographically measuring the hydrofluoric acid when in contact with added chromogenic agents to obtain exact measurements that are accurate, immediate, and safe.
    Type: Application
    Filed: July 2, 2014
    Publication date: October 23, 2014
    Applicant: NALCO COMPANY
    Inventors: Amy M. Tseng, Brian V. Jenkins, Robert M. Mack
  • Patent number: 8829118
    Abstract: This invention pertains to method of using a composition comprising one or more hydrophobically modified polyacrylamides, wherein the polyacrylamides contain acrylamide, one or more anionic monomers, and excludes a cationic monomer, and the method of combination with other compositions for use in combination for consumer and/or industrial applications.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: September 9, 2014
    Assignee: Nalco Company
    Inventors: Yin Z. Hessefort, Patrick J. Marek, Jeffrey R. Cramm, Damyanti J. Patel, Wayne M. Carlson
  • Patent number: 8808574
    Abstract: The invention provides methods and compositions for the reduction of dust in an environment through application to a hard surface in that environment or dispersal of dust into the environment is minimized. The composition allows for instant reduction of dust and for the elimination of the absorption of moisture on surfaces that are prone to this over time. The invention is usable with mined minerals or synthesized materials that are prone to produce dust and absorb moisture during storage and transport so the composition can allow for a safer environment and longer storage of products.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: August 19, 2014
    Assignee: Nalco Company
    Inventor: Merle L. Branning
  • Patent number: 8790608
    Abstract: Non-spherical siliceous particles having a plurality of porous branches are disclosed and claimed. The porous branches are randomly oriented and elongated, ring-like, and/or aggregated. An additive introduced during synthesis of the particles modifies pore volume and morphology. The tunability of the pore volume includes an inner diameter ranging from about 2 ? to about 50,000 ?. Synthesizing the particles includes mixing under constant or intermittent stirring in a reaction vessel an aqueous silicic acid solution with an acidic heel solution to form a mixture. The stirring may optionally be performed at a variable speed. An additive is introduced into the mixture at a controlled rate, wherein the additive imposes a pH change from a lower pH to a higher pH to the mixture to induce siliceous particle precipitation.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: July 29, 2014
    Assignee: Nalco Company
    Inventors: Brian T. Holland, Sascha Welz
  • Patent number: 8784509
    Abstract: The present invention relates to compositions and methods to increase the output of a high quality product from the precipitation liquor crystallization process exemplified through the aluminum hydroxide recovery processes such as the Bayer process. The invention is a method of increasing the size of precipitates from a liquor. The invention in one embodiment relates to the use of a crystal growth modifier compositions added to the precipitation process to increase the particle size distribution of the precipitated alumina trihydrate.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 22, 2014
    Assignee: Nalco Company
    Inventors: Dmitri Kouznetsov, Jianjun Liu, Kim Richard Coleman, Ryan Travis Chester, John David Kildea
  • Patent number: 8778140
    Abstract: A method of preparing a stable dispersion of flocculated filler particles for use in papermaking processes comprises use of microparticle prior to, simultaneous to, and/or after addition of a first flocculating agent to an aqueous dispersion of filler particles, followed by addition of a second flocculating agent to the dispersion and further optional shearing of the resultant filler flocs to the desired particle size resulting in shear resistant filler flocs with a defined and controllable size distribution. In addition, a neutralizing coagulant can be added to the dispersion to partially or completely neutralize the charge of the filler before the microparticle and/or the first flocculating agent is added.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: July 15, 2014
    Assignee: Nalco Company
    Inventors: Weiguo Cheng, Katherine M Broadus, Dorota Smoron, Shawnee M Wilson
  • Patent number: 8771593
    Abstract: Disclosed is a method of controlling a real-time oxidation-reduction potential in a hot water system to inhibit corrosion in the hot water system. The method includes defining one or more operational protective zones in the hot water system. One or more of the operational protective zones includes an oxidation-reduction potential probe that is operable to measure a real-time oxidation-reduction potential in the hot water system at operating temperature and pressure. The probe transmits the measured real-time potential to the controller, which assesses and interprets the transmitted potential to determine whether it conforms to an oxidation-reduction potential setting. If the measured potential does not conform the oxidation-reduction potential setting, the controller is operable to feed or remove one or more active chemical species into or from the hot water system and further operable to change at least one system parameter.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: July 8, 2014
    Assignee: Nalco Company
    Inventors: Peter D. Hicks, David A. Grattan
  • Patent number: 8764974
    Abstract: Disclosed and claimed is a method for improving the froth quality and bitumen recovery in primary bitumen extraction processes by coagulant addition in the underwash feed water. Preferred coagulants are cationic or amphoteric polymers. Coagulant addition in the underwash feed water reduces the solids content reporting to the primary bitumen froth in a primary separation vessel (PSC). This treatment program can also be combined with dispersant addition in the dilution make-up feed water into a PSC. Preferred dispersants are low molecular weight anionic polymers.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: July 1, 2014
    Assignee: Nalco Company
    Inventors: Kimberly Jantunen Cross, Anoop Chengara, Anthony G. Sommese, Edward Maharaih
  • Patent number: 8765951
    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 SO.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: July 1, 2014
    Assignee: Nalco Company
    Inventors: Alan M. Blair, Keith N. Garside, William J. Andrews, Kailas B. Sawant
  • Patent number: 8765083
    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 SO.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: July 1, 2014
    Assignee: Nalco Company
    Inventors: Alan M. Blair, Keith N. Garside, William J. Andrews, Kailas B. Sawant
  • Publication number: 20140170302
    Abstract: The invention provides methods and compositions for monitoring and controlling the thickness of coating on a creping cylinder is disclosed. The methodologies involve a coordinated scheme of apparatuses that function to monitor various aspects of a creping cylinder coating so that the thickness of the coating can be determined.
    Type: Application
    Filed: February 18, 2014
    Publication date: June 19, 2014
    Applicant: NALCO COMPANY
    Inventors: William A. Von Drasek, Rodney H. Banks, Gary S. Furman
  • Publication number: 20140166589
    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: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Applicant: NALCO COMPANY
    Inventors: Peter D. Hicks, M. Alexandra Knoth
  • Patent number: 8753599
    Abstract: A method and composition for the reduction of the emission of selenium into the environment from the burning of fossil fuels with the use of two chemistries, either individually or in combination with each other. The method uses polydithiocarbamic compounds, including polydithiocarbamic compounds derived from a polymer produced from acrylic-x and alkylamine in conjunction with a scrubber process to capture selenium and reduce its emission in aqueous phase blowdown. The method and composition also helps reduce corrosion in the scrubber process.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: June 17, 2014
    Assignee: Nalco Company
    Inventors: Bruce A. Keiser, Jitendra T. Shah, John V. Meier, Paul J. Zinn, Jianwei Yuan, Raul Espinosa, Rebecca L. Stiles, Richard Mimna, Wayne M. Carlson
  • Patent number: 8753896
    Abstract: A method of monitoring a surfactant in a microelectronic process is disclosed. Specifically, the monitoring of a surfactant occurs by studying the fluorescence or electromagnetic emission of a sample collected from a microelectronic process.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: June 17, 2014
    Assignee: Nalco Company
    Inventors: Brian V. Jenkins, John E. Hoots, Amy M. Tseng
  • Patent number: 8753480
    Abstract: The current invention includes a composition having stability additives of selected inorganic salts and/or organic incorporated into an aldehyde-functionalized polymer product. The stability additive can be post added to the finished polymer product, added to the reaction vessel prior to inducing functionalization of the non-functionalized polymer, or added at any stage during the functionalization reaction. Methods for forming the composition and using the composition to produce a cellulosic fiber-based medium are also disclosed.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: June 17, 2014
    Assignee: Nalco Company
    Inventors: Heinrich E. Bode, Michael R. St. John, Mei Liu, Robert M. Lowe
  • Patent number: 8753478
    Abstract: A composition comprising one or more high molecular weight resins and one or more low molecular weight resins in a ratio of about 1:99 to about 99:1 based on polymer actives, wherein said high molecular weight resins are selected from the group consisting of glyoxylated polyacrylamide, crosslinked polyaminoamide and polyaminoamide-epihalohydrin resins having a molecular weight of about 100,000 to about 5,000,000 Dalton and the low molecular weight resins are selected from the group consisting of glyoxylated polyacrylamide, crosslinked polyaminoamide and polyaminoamide-epihalohydrin resins having a molecular weight of less than about 100,000 Dalton and wherein the mole ratio of epihalohydrin to secondary nitrogen atoms in the high and low molecular weight polyaminoamide-epihalohydrin resins is less than about 0.5. and use of the composition for creping paper webs.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: June 17, 2014
    Assignee: Nalco Company
    Inventors: Vladimir A. Grigoriev, Gary S. Furman
  • Patent number: 8747617
    Abstract: A method of preparing a stable dispersion of flocculated filler particles for use in papermaking processes comprises sequential addition of a first flocculating agent to an aqueous dispersion of filler particles followed by shearing of the dispersion, followed by addition of a second flocculating agent to the dispersion and further shearing of the resultant filler flocs to the desired particle size resulting in shear resistant filler flocs with a defined and controllable size distribution. In addition, a neutralizing coagulant can be added to the dispersion to partially or completely neutralize the charge of the filler before the first flocculating agent is added.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: June 10, 2014
    Assignee: Nalco Company
    Inventors: Weiguo Cheng, Ross T. Gray
  • Patent number: 8747789
    Abstract: A composition comprising a polymer derived from at least two monomers: acrylic-x and an alkylamine, wherein said polymer is modified to contain a functional group capable of scavenging one or more compositions containing one or more metals is disclosed. These polymers have many uses in various mediums, including wastewater systems.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: June 10, 2014
    Assignee: Nalco Company
    Inventors: Paul J. Zinn, Jitendra T. Shah, William J. Andrews
  • Patent number: RE44936
    Abstract: A composition for enhancing the dewatering of a paper sheet on a paper machine and a method for using the composition is disclosed. The composition comprising one or more aldehyde-functionalized polymers comprising amino or amido groups wherein at least about 15 mole percent of the amino or amido groups are functionalized by reacting with one or more aldehydes and wherein the aldehyde functionalized polymers have a molecular weight of at least about 100,000. The method comprising adding the composition to the paper machine at a dosage of about 0.05 lb/ton to about 15 lb/ton, based on dry fiber.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: June 10, 2014
    Assignee: Nalco Company
    Inventors: Michael R. St. John, Angela P. Zagala