Patents Assigned to Ondeo Nalco Company
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Patent number: 6733674Abstract: A method of dewatering sludge comprising adding an effective amount of one or more cellulolytic enzymes, one or more oxidants and one or more flocculants to the sludge to form a mixture of water and coagulated and flocculated solids and separating the coagulated and flocculated solids from the water.Type: GrantFiled: January 22, 2003Date of Patent: May 11, 2004Assignee: Ondeo Nalco CompanyInventors: Jawed Sarkar, Jitendra Shah, Manian Ramesh
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Patent number: 6733673Abstract: This invention concerns a method of dewatering sludge comprising adding an effective amount of one or more cellulolytic enzymes and one or more peroxidases to the sludge.Type: GrantFiled: January 29, 2002Date of Patent: May 11, 2004Assignee: Ondeo Nalco CompanyInventors: Jawed Sarkar, Jitendra Shah, Manian Ramesh
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Patent number: 6726845Abstract: The claimed invention is a method for separating Bayer process red mud from a Bayer process liquor which comprises adding to a Bayer process liquor containing red mud an effective amount of a water soluble synthetic flocculant, dextran and starch combination. The flocculant is added anywhere in the slurry containing the red mud suspended in Bayer process liquor, or in a liquor slurry containing bauxite prior to or during digestion. Once the flocculant combination is added, it is mixed sequentially with the Bayer process liquor and the red mud contained in the Bayer process liquor is removed by sedimentation, centrifugation or filtration.Type: GrantFiled: February 15, 2001Date of Patent: April 27, 2004Assignee: Ondeo Nalco CompanyInventors: Scott Barham, James Morton Tippett
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Patent number: 6709551Abstract: This invention is directed to high molecular weight water-soluble polymers comprised of zwitterionic, nonionic and cationic or anionic monomer units, and to the use of these polymers in papermaking processes.Type: GrantFiled: December 17, 2001Date of Patent: March 23, 2004Assignee: Ondeo Nalco CompanyInventors: Martin J. Coffey, Steven T. Govoni, Arthur J. Begala, Ross T. Gray, Patrick G. Murray
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Patent number: 6706144Abstract: A method of dewatering an aqueous cellulosic pulp slurry comprising adding to an aqueous slurry of washed cellulosic pulp an effective dewatering amount of a mixture of one or more nonionic surfactants and one or more anionic surfactants.Type: GrantFiled: June 18, 2002Date of Patent: March 16, 2004Assignee: Ondeo Nalco CompanyInventors: Gary S. Furman, Jr., James J. Svarz
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Patent number: 6702921Abstract: A method to enhance brightness in Chemical and Mechanical bleached pulps comprising adding an organic sulfide chelant to the Chemical and Mechanical pulp.Type: GrantFiled: May 1, 2001Date of Patent: March 9, 2004Assignee: Ondeo Nalco CompanyInventors: Prasad Y. Duggirala, Sergey M. Shevchenko, Kristine S. Salmen
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Patent number: 6696067Abstract: A cosmetically acceptable composition for treating hair, skin and nails comprising from about 0.001 to about 25 weight percent, based on polymer solids, of a stable dispersion in an aqueous salt solution of a cationic, anionic or nonionic polymer having a weight average molecular weight of from about 10,000 to about 50,000,000 and a method of treating hair, skin or nails are disclosed.Type: GrantFiled: April 12, 2001Date of Patent: February 24, 2004Assignee: Ondeo Nalco CompanyInventors: Loralei Marie Brandt, Douglas E. Betts, Cathy C. Johnson
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Patent number: 6685840Abstract: A method of making a solid water treatment product with an optimal rate of dissolution is described and claimed. A fluorescent tracer is used to determine the rate of dissolution of the solid water treatment product and the composition and method of manufacturing the solid water treatment product are adjusted as needed to make the rate of dissolution optimal. The solid water treatment product can be used in many industrial water treatment systems. When the solid water treatment product is used, the amount of solid water treatment product present in the water of the industrial water system can be determined, and adjusted, by using a fluorometer to measure the fluorescent signal of the fluorescent tracer present in the product and relating that measurement to the amount of product in the water itself.Type: GrantFiled: January 31, 2002Date of Patent: February 3, 2004Assignee: Ondeo Nalco CompanyInventor: Steven R. Hatch
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Patent number: 6669904Abstract: Stabilized bromine solutions are prepared by combining a bromine source and a stabilizer to form a mixture, and then adding an oxidizer to the mixture.Type: GrantFiled: August 1, 2001Date of Patent: December 30, 2003Assignee: Ondeo Nalco CompanyInventors: Shunong Yang, Donald A. Johnson, Robert L. Wetegrove, George J. Collias
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Patent number: 6670617Abstract: Described and claimed is a Mirror Fluorometer comprising a rotatable mirror positioned such that it is capable of projecting a converging cone of excitation light onto one or more of the samples wherein the fluorescent signals emitted from fluorophores in the samples is detected. Also claimed is a method of using this Mirror Fluorometer for detecting fluorescent signals emitted by one or more fluorophores from samples from a natural or industrial water system. The fluorometer, when coupled with a controller is capable of monitoring and optionally controlling an industrial process or system, including a paper mill process.Type: GrantFiled: June 28, 2001Date of Patent: December 30, 2003Assignee: Ondeo Nalco CompanyInventor: Rodney H. Banks
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Patent number: 6662636Abstract: The invention is in a method of analyzing the water of an industrial water system wherein an analytical device is used to measure some parameter capable of being measured in the water of said industrial water system, the improvement involving using a water movement device that is capable of moving a sample of water into the sample chamber of said analytical device and is also capable of moving the same sample of water back out of said analytical device in a manner such that the filters present in the piping of said industrial water system are back flushed out every time the water movement device moves a sample of water in and out of said analytical device. Optionally an air sparge is used to enhance the cleaning of the filters.Type: GrantFiled: December 13, 2001Date of Patent: December 16, 2003Assignee: Ondeo Nalco CompanyInventors: Jitendra T. Shah, Brian S. Johnson
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Patent number: 6645428Abstract: Fluorescent monomers are described and claimed which are synthesized by reacting a substituted or non-substituted naphthalic 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: GrantFiled: April 27, 2000Date of Patent: November 11, 2003Assignee: Ondeo Nalco CompanyInventors: John D. Morris, Barbara E. Moriarty, Mingli Wei, Patrick G. Murray, Jerry L. Reddinger
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Patent number: 6641624Abstract: A method of preparing a synthetic fuel from coal comprising reacting the coal with a polymer composition comprising an aqueous solution or an aqueous emulsion of one or more reactive polymers, the reactive polymers selected from the group consisting of ethylene/vinyl acetate copolymers, ethylene/vinyl alcohol copolymers, poly(acrylic acid), poly(vinyl alcohol), vinyl alcohol/vinyl acetate copolymers, poly(vinyl acetate), vinyl acetate/acrylic acid copolymers, poly(vinyl acetate/acrylic acid/ethylene), acrylic acid/acrylamide copolymers and poly(acrylamide).Type: GrantFiled: September 11, 2002Date of Patent: November 4, 2003Assignee: Ondeo Nalco CompanyInventors: Donald E. Govoni, Ronald V. Davis
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Patent number: 6638983Abstract: Water-in-Oil emulsions are demulsified using adducts of a) polyalkylene glycols (PAGS) having a molecular weight greater than 6,500 and up to 60,000, ethylene oxide (EO), and diisocyanates (DIs) or b) polyalkylene glycols (PAGs) having a molecular weight greater than 6,500 and up to 60,000 and diisocyanates (DIs). The preferred PAG is polypropylene glycol and the preferred DIs are meta or para tetramethylxylene diisocyanate and toluene diisocyanate.Type: GrantFiled: February 4, 1999Date of Patent: October 28, 2003Assignee: Ondeo Nalco CompanyInventor: Grahame N. Taylor
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Patent number: 6627087Abstract: A method of removing lead from water comprising a) adjusting the pH of the water to about 7 to about 9; and b) adding to the water an effective amount of a water soluble, high molecular weight cationic dispersion polymer composed of i) (meth)acrylamide; ii) a hydrophilic cationic monomer of formula wherein A1 is O or NH; B1 is C2-C4 alkylene or hydroxypropylene; R1 is H or CH3, R2 and R4 are independently C1-C2 alkyl; R3 is H or C1-C2 alkyl; and X1 is an anionic counterion; and iii) a hydrophobic cationic monomer of formula wherein A2 is O or NH; B2 is C2-C4 alkylene or hydroxypropylene; R5 is H or CH3; R6 and R8 are C1-C2 alkyl; R7 is C6-C20 alkyl or arylalkyl; and X2 is an anionic counterion; c) optionally adding a water soluble ethylene dichloride ammonia polymer to form a mixture of water and lead-containing flocculated solids; and d) separating the lead-containing flocculated solids from the water.Type: GrantFiled: August 24, 2001Date of Patent: September 30, 2003Assignee: Ondeo Nalco CompanyInventors: Ashis K. Samaddar, Sanjay R. Srivatsa, Manoj K. Bhaduri
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Patent number: 6627719Abstract: A cationic latex terpolymer prepared by polymerizing from about 1 to about 99.1 mole percent of one or more cationic monomers, from about 0.9 to about 5 mole percent of one or more hydroxyalkyl (meth)acrylates and from 0 to about 98.1 mole percent of one or more nonionic monomers is useful for dewatering sludge.Type: GrantFiled: January 31, 2001Date of Patent: September 30, 2003Assignee: Ondeo Nalco CompanyInventors: Wesley L. Whipple, Ananthasubramanian Sivakumar, Jitendra Shah
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Patent number: 6617421Abstract: The present invention is a method of producing substantially dry water insoluble polymers from poly alkyl esters of vinylic monomers for use in a method for the clarification of red mud-containing liquors generated in the Bayer process for the recovery of alumina from bauxite ore. The polymers can be either homopolymers, copolymers or terpolymers. Preferably, the dried emulsion polymers are high molecular weight polymers of poly(methyl acrylate), poly(methyl acrylate/acrylic acid), poly(vinyl acetate/acrylic acid/methyl acrylate), poly(t-butyl methacrylate/acrylic acid/methyl acrylate) and poly(t-butyl acrylate/acrylic acid/methyl acrylate).Type: GrantFiled: January 29, 2002Date of Patent: September 9, 2003Assignee: Ondeo Nalco CompanyInventors: Everett C. Phillips, Ronald J. Allain
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Use of polymers containing vinylamine/vinylformamide for the treatment of food processing wastewater
Patent number: 6610209Abstract: A method for clarifying food processing waste water containing suspended solids comprising (iii) adding to the waste water with an effective amount of at least one vinylamine polymer having a molecular weight of at least 10,000, wherein the polymer is prepared by first polymerizing N-vinylformamide and, optionally, vinyl acetate to form a vinylformamide polymer or a vinylformamide/vinylacetate copolymer and then subjecting the vinyl formamide polymer or vinylformamide/vinylacetate copolymer to acid or base hydrolysis to form a vinylamine/vinylformaide copolymer, a vinylamine homopolymer or a up vinylamine/vinylalcohol copolymer; (ii) coagulating and flocculating the suspended solids; and (iii) separating the coagulated and flocculated suspended solids from the wastewater.Type: GrantFiled: July 5, 2001Date of Patent: August 26, 2003Assignee: Ondeo Nalco CompanyInventors: Anthony G. Sommese, Daniel K. Chung -
Patent number: 6605674Abstract: This invention is directed to structurally-modified water-soluble polymers prepared by initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30% polymerization of the monomers has occurred, and to use of the water-soluble cross-linked polymers as flocculating agents.Type: GrantFiled: June 29, 2000Date of Patent: August 12, 2003Assignee: Ondeo Nalco CompanyInventors: Wesley L. Whipple, Chidambaram Maltesh, Cathy C. Johnson, Ananthasubramanian Sivakumar, Tracey M. Guddendorf, Angela P. Zagala
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Patent number: 6599489Abstract: The present invention provides an improved process for the production of alumina trihydrate crystals. Through the addition of a hydroxamated polymer at various stages of the process for production of these alumina trihydrate crystals, an upward shift in the particle size distribution of the alumina trihydrate crystals occurs. In one embodiment, the hydroxamated polymer is added to a filtered aqueous solution, which comprises no more than about 10 mg of insoluble solids per liter. In another embodiment, the hydroxamated polymer is added to an aqueous solution comprising insoluble solids after precipitation of alumina trihydrate crystals has commenced. Optionally, alumina trihydrate seed crystals may be added to the aqueous solution to initiate or encourage crystal formation.Type: GrantFiled: April 2, 2001Date of Patent: July 29, 2003Assignee: Ondeo Nalco CompanyInventors: Robert P. Mahoney, William B. Schnieders, Jr.