Derived From Alkyl Halide Or Epihalophydrin Reactant Patents (Class 210/736)
  • Patent number: 9950953
    Abstract: The present invention provides methods and compositions for treating clay-bearing aggregates, particularly those used for construction purposes, whereby inclusion of fines is maximized due to minimization of clay washing which tends to remove such fines, and whereby performance of the aggregate-containing construction material is enhanced. Exemplary methods comprise introducing to clay a water-soluble, functionalized polyamine comprising a water-soluble polyamine formed by reacting an amine compound with an epoxy compound, the polyamine thus reacted being functionalized through the use of certain halide, sulfate, or epoxy compounds.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: April 24, 2018
    Assignees: GCP Applied Technologies Inc., SNF S.A.S.
    Inventors: Lawrence L. Kuo, Cedrick Favero, Christophe Roux, Nathan A. Tregger
  • Patent number: 9811021
    Abstract: Provided is such a conductive member that a change in its electrical resistance value caused by its long-term use is reduced to the extent possible. The conductive member has a conductive support and a conductive layer, the conductive layer contains a rubber composition formed of a modified epichlorohydrin rubber, and the modified epichlorohydrin rubber has a unit represented by the following formula (1). In the formula (1), R1, R2, and R3 each independently represent hydrogen or a saturated hydrocarbon group having 1 to 18 carbon atoms.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: November 7, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Norifumi Muranaka, Satoru Yamada, Kazuhiro Yamauchi, Seiji Tsuru, Yuka Muranaka
  • Publication number: 20150129506
    Abstract: Methods for removing particulates from an aqueous suspension are provided. In at least one specific embodiment, the method can include mixing a polyamidoamine-epihalohydrin resin with an aqueous suspension comprising one or more first particulates to produce a treated mixture. An amount of the polyamidoamine-epihalohydrin resin in the treated mixture can be less than 500 g/tonne of the one or more first particulates. The method can also include recovering from the treated mixture a purified water having a reduced concentration of the one or more first particulates relative to the aqueous suspension, a purified first particulate product having a reduced concentration of water relative to the aqueous suspension, or both.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 14, 2015
    Applicant: Georgia-Pacific Chemicals LLC
    Inventors: David R. Snead, Clay E. Ringold, Brian L. Swift
  • Patent number: 8858803
    Abstract: Methods are provided for making halide-free quaternary ammonium salt monomers. Polymers prepared from the monomers and methods of using the polymers to clarify raw, untreated water or wastewater are also disclosed.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: October 14, 2014
    Assignee: General Electric Company
    Inventors: Tamaz Guliashvili, Stephen R. Vasconcellos
  • Publication number: 20140284519
    Abstract: The invention relates to a process for the purification of water and/or dewatering of sludges and/or sediments, to the use of a surface-treated calcium carbonate for water purification and/or dewatering of sludges and/or sediments, as well as to the use of a surface-treated calcium carbonate for reducing the amount of polymeric flocculation aids in water and/or sludges and/or sediments and to a composite material comprising a surface-treated calcium carbonate and impurities originated from different sources obtainable by said process.
    Type: Application
    Filed: October 30, 2012
    Publication date: September 25, 2014
    Inventors: Daniel E. Gerard, Hans-Georg Hartan, Joachim Schoelkopf, Michael Skovby, Patrick A.C. Gane
  • Patent number: 8815960
    Abstract: The present invention relates to demulsifying and dehydrating formulations of heavy crude oil based block copolymers amine bifunctionalized with low polydispersities. These formulations can contain solvents whose boiling point is in the range from 35 to 200° C., preferably: dichloromethane, chloroform, toluene, xylenes, turbosine, naphtha or mixtures thereof.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: August 26, 2014
    Assignee: Instituto Mexicano Del Petroleo
    Inventors: Gabriel Cendejas Santana, Eugenio Alejandro Flores Oropeza, Laura Verónica Castro Sotelo, Aristeo Estrada Buendía, Marcelo Lozada y Cassou, Flavio Salvador Vázquez Moreno
  • Patent number: 8728326
    Abstract: The invention relates to a polymer comprising structural units of formula and formula wherein R1, R2, R5 and R6 are independently hydrogen, a methyl group, or —COOH, only one of R1 and R2 or R5 and R6 is —COOH; R3 and R7 are independently hydrogen, or a methyl group; R4 is —COOH, —CONH2 or —OH, when R4 is —OH, R1, R2 and R3 are respectively hydrogen; and R8 is —COO, —CONH, or —O—, when R8 is —O—, R5, R6 and R7 are respectively hydrogen. Methods for preparing and using the polymer are also described herein.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: May 20, 2014
    Assignee: General Electric Company
    Inventors: Wenqing Peng, Yangang Liang, Shengxia Liu, Larry Neil Lewis, Robert James Perry, Stephen Robert Vasconcellos, Su Lu, Guixi Zhang
  • Publication number: 20140131284
    Abstract: New water treatment chemicals and corresponding water treatment or more generally aqueous systems treatment processes are provided, which greatly attenuate the NDMA problem, that is, decrease the formation of NDMA during the water or aqueous system treatment namely in the presence of a disinfectant, and decrease too the level of NDMA in the so treated water of aqueous system, and in the end products such as drinking water.
    Type: Application
    Filed: January 22, 2014
    Publication date: May 15, 2014
    Applicant: S.P.C.M. SA
    Inventors: Cedrick FAVERO, Amelia E. Taylor
  • Publication number: 20110089119
    Abstract: A method for clarifying an aqueous medium containing suspended material is provided. The method includes dispersing a treatment additive in the aqueous medium containing the suspended material for coagulating and flocculating the suspended material and then separating the suspended material from the treated aqueous medium. The treatment additive includes a crosslinked diallyldialkylammonium halide polymer having from about 0.001 molar percent to less than 0.1 molar percent of a crosslinking agent. A treatment additive composition is also provided.
    Type: Application
    Filed: December 22, 2010
    Publication date: April 21, 2011
    Inventors: Gerald C. WALTERICK, JR., William S. Carey, Fang Deng
  • Patent number: 7514007
    Abstract: A water-soluble interjacent complex that includes a first water-soluble polymer and one or more water-soluble monomers polymerized to form a second water-soluble polymer in the presence of the first water-soluble polymer. The water-soluble interjacent complex forms a solution in water that is free of insoluble polymer particles. The interjacent complexes may be used to treat a waste sludge by adding an effective amount thereof to the waste sludge. The interjacent complexes may also be used in making paper by adding an effective amount thereof to a pulp or a forming sheet at a suitable location on a paper making machine. The interjacent complexes may further be used as a rheology modifier in aqueous systems by adding an effective amount thereof to an aqueous medium to effect a desired viscosity, rheology, or flow curve property.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: April 7, 2009
    Assignee: WSP Chemicals & Technology, LLC
    Inventors: Shih-Ruey T Chen, Valentino L. DeVito, Kevin W. Frederick
  • Patent number: 7431845
    Abstract: A method of clarifying oily waste water comprising adding to the waste water an effective clarifying amount of one or more demulsifiers selected from the group consisting of dendritic polyamines, dendritic polyamidoamines and hyperbranched polyethyleneimines and the reaction products thereof with gluconolactone, alkylene oxides, salts of 3-chloro-2-hydroxypropanesulfonic acid, alkyl halides, benzyl halides and dialkyl sulfates.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: October 7, 2008
    Assignee: Nalco Company
    Inventors: Maria B. Manek, Michael J. Howdeshell, Kirk E. Wells, Hester A. Clever, William K. Stephenson
  • Patent number: 7030163
    Abstract: A biocidal composition includes, in combination, poly(hexamethylene)biguanide, didecyldimethylammonium chloride a homogenizing agent and a flocculating agent. The biocidal composition is used to treat water to control microorganisms.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: April 18, 2006
    Assignee: Ipsilon Laboratories CC
    Inventor: Nicolaas Duneas
  • Patent number: 6635182
    Abstract: The present invention is a floatation process and associated apparatus for removing heavy metal waste from various effluent water streams. The process and apparatus generally introduces a population of fine diameter air bubbles and one or more flocculating chemicals into an effluent stream to produce buoyant floc structures that include the heavy metals and that can be removed from the effluent stream. The present invention provides a reliable, cost-effective means of removing heavy metals from effluent water streams.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: October 21, 2003
    Assignee: Industrial Waste Water Services, LLP
    Inventor: C. Lamar Coleman, Jr.
  • Patent number: 6613230
    Abstract: A method of removing arsenic and fluoride from aqueous solutions in the same process is provided. Specifically, the pH of the aqueous solution is adjusted to a pH in the range of about 5 to 8. A combination of calcium salts, and ferric or aluminum salts are added to form insoluble arsenic and fluoride bearing solids. The solids are then removed from the aqueous solution.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: September 2, 2003
    Assignee: Ionics, Incorporated
    Inventors: Gerald A. Krulik, Paul H. Dick, Josh H. Golden, Jay Jung, Gennadiy Sverdlov
  • Patent number: 6491827
    Abstract: Compositions of aluminum chlorohydrate and high molecular weight branched epichlorohydrin amine condensate polymers are applied to waste liquids, such as pulp and paper mill effluents having a lignin content, to reduce true color. The branched epichlorohydrin amine condensate polymer is branched using branching agents which result in a molecular weight greater than about 300,000 and permit solubility. When applied to waste liquids, the high molecular weight branched epichlorohydrin amine condensate polymer and aluminum chlorohydrate react with the lignin components in the waste liquid to form an insoluble agglomerate thus reducing the true color of the waste liquid. The resulting agglomerate, including the colored lignin, may be filtered from the waste liquid.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: December 10, 2002
    Assignee: Steen Research, LLC
    Inventors: Stephen R. Temple, Michael J. Stoltz
  • Patent number: 6358364
    Abstract: The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or starch, with or without the addition of a cationic coagulant. The borosilicate material is preferably a colloidal borosilicate. Methods for the preparation of the borosilicate material are disclosed.
    Type: Grant
    Filed: April 22, 2001
    Date of Patent: March 19, 2002
    Assignee: Nalco Chemical Company
    Inventors: Bruce A. Keiser, James E. Whitten
  • Patent number: 6325936
    Abstract: A process for treating waste water containing a resin is disclosed, which includes the steps of adding a polyamine compound to waste water containing at least a resin to coagulate at least water-insoluble matter in the water to form coagulated particles, adding a polyacrylamide polymer to cause those particles to grow into flocculated flocs, and separating the flocculated flocs. The process of the invention can treat waste water containing a resin in an industrially beneficial way without producing a large amount of sludge is disclosed.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: December 4, 2001
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Toshio Niijima
  • Patent number: 6258277
    Abstract: The simultaneous precipitation of soluble heavy metal ions from semiconductor wastewater containing abrasive solids and enhancement of microfilter operation is achieved through the addition of an effective amount of a water-soluble polymer containing dithiocarbamate functionalities to the wastewater.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: July 10, 2001
    Assignee: Nalco Chemical Company
    Inventors: Kristine S. Salmen, Angela S. Kowalski, E. H. Kelle Zeiher, William J. Ward
  • Patent number: 6203711
    Abstract: A process is provided which can be used, for example, to clarify substantially aqueous fluids and separate solids from the fluid. The process comprises combining the fluid with a composition which comprises an anionic silica-based colloid having an S value of less than 50% and a cationic organic polymer.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: March 20, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Robert Harvey Moffett
  • Patent number: 6177017
    Abstract: A method for the removal of metal cyanides or oxoanions from aqueous streams such as waste water streams with compounds containing 1,4-diazabicyclo[2.2.2]octane. Preferred compounds are polymers formed by free radical polymerization of N-4-vinyl benzyl-N1-1,4-diazabicyclo[2.2.2]octane dichloride (VBBD) such as copolymers poly (VBBD/acrylamide) and poly (VBBD/dimethyl amino ethyl acrylate benzyl chloride quaternary salt. Poly(1,4-dimethylbenzyl-1,4-diazabicyclo[2.2.2]octane dichloride) for the same purposes is also disclosed.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: January 23, 2001
    Assignee: Nalco Chemical Company
    Inventor: William J. Ward
  • Patent number: 6140130
    Abstract: A system and method for the detection and removal of copper from wastewater streams from semiconductor or printed circuit board manufacturing is described and claimed. The detection system and method involve the addition of a reagent that reacts with copper to quench the fluorophore present, with the decrease in fluorescence being detected by a fluorometer. The reduction of fluorescence is then used to calculate the amount of copper present in the form of Cu+2 ion in the wastewater. The removal system and method involve either the addition of a polymer that reacts with copper to form an insoluble precipitate with said precipitate then being removed by using any technique commonly known in the art; or the use of an ion exchange column to remove the copper from the wastewater stream.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: October 31, 2000
    Assignee: Nalco Chemical Company
    Inventors: Kristine S. Salmen, Angela S. Kowalski, Brian V. Jenkins, John E. Hoots
  • Patent number: 6136220
    Abstract: Methods and compositions for detackifying and dispersing, and coagulating/flocculating and dispersing solventborne and waterborne paints, respectively, in paint spray booth waters are disclosed. An aqueous composition of water soluble cationic polymer, nonionic surfactant and amphoteric surfactant is used in conjunction with a silicate compound to treat the paint spray booth waters.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: October 24, 2000
    Assignee: BetzDearborn Inc.
    Inventors: Howard B. Agree, Barry P. Gunagan, Edward A. Rodzewich
  • Patent number: 6136200
    Abstract: A composition for the detackification and clarification of acid and alkaline paint and lacquer waste waters and paint spray booth wastes, comprising:an inorganic-organic and/or organic adduct alloy polymer composition having the formula:A.multidot.B.sup.+ .multidot.D.sup.+wherein: A=[(SiO.sub.2 /Me.sup.I.sub.2 O).sub.u Me.sup.II.sub.m Me.sub.m.sup.III(OH).sbsp.p.sup.(SO.sbsp.4.sup.).sbsp.y.sup.(Aci) (2m+3n)-p-2y].sub.rwhere r=1 to 98% bw; u=0 to 10% bw; ##STR1## where: x=0 to 98% bw; Z is a divalent substituted or unsubstituted aliphatic, cycloaliphatic, heterocyclic or aromatic radicalD.sup.+ =(PQAM).sub.wwherew=2 to 98% b.w. of polyquaternized polymer (PQAM)Me.sub.m.sup.II is selected from the divalent cationic group comprising: Mg, Zn, Ca, and Fe.sup.2+m=0 to 5Me.sub.n.sup.III is a tri-or more valent metal selected from the group comprising: Fe, Al, and Al--Zn complexes;n=1 to 20Aci is selected from the monovalent anionic group comprising Cl.sup.-, Br.sup.-, I.sup.-, NO.sub.3 --, H.sub.2 PO.sub.4 --, CH.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: October 24, 2000
    Assignee: Polymer Research Corporation
    Inventor: John J. Waldmann
  • Patent number: 6120690
    Abstract: This invention provides a process for clarifying waters and wastewaters by using aluminum salts and/or aluminum polymers and newly formulated high molecular weight quaternized polymers. The aluminum polymers and the high molecular weight quaternized polymers are blended in the water or wastewater to form a flocculated suspension, causing liquid-solid separation. The quaternized polymers have a molecular weight of greater than approximately 1,000,000 and have a viscosity greater than about 1,000 cps at a concentration of approximately 20% in water. Preferably, poly-aluminum hydroxychloride, poly-aluminum chloride and poly-aluminum siloxane sulfate are used as aluminum polymers along with high molecular weight quaternized polymers such as di-allyl di-methyl ammonium chloride (DADMAC), to significantly improve liquid-solid separation in waters and wastewaters. Aluminum salts, such as alums and aluminum chloride, can also be used along with the quaternized polymers to clarify water.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: September 19, 2000
    Inventor: Richard Alan Haase
  • Patent number: 6059978
    Abstract: Cationic polymers are added to wastewater containing colorants to form a cationic polymer/colorant complex. Anionic polymers are then added to the wastewater to produce a flocculent precipitate that is separated from the wastewater.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: May 9, 2000
    Assignee: Simco Holding Corporation
    Inventors: Joseph A. Pacifici, Daniel G. Sims
  • Patent number: 5985154
    Abstract: Methods and compositions for detackifying and dispersing, and coagulating/flocculating and dispersing solventborne and waterborne paints, respectively, in paint spray booth waters are disclosed. An aqueous composition of water soluble cationic polymer, nonionic surfactant and amphoteric surfactant is used in conjunction with a silicate compound to treat the paint spray booth waters.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: November 16, 1999
    Assignee: Betz Dearborn Inc.
    Inventors: Howard B. Agree, Barry P. Gunagan, Edward A. Rodzewich
  • Patent number: 5961838
    Abstract: Processes for removing color from a paper mill waste effluent and for removing color from a textile plant waste effluent utilizing an amphoteric copolymer/polyamine combination are described. A preferred amphoteric copolymer is poly(dimethylaminoethylacrylate methyl chloride quaternary salt/acrylic acid) and a preferred polyamine is a polymeric reaction product of epichlorohydrin and dimethylamine.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: October 5, 1999
    Assignee: Nalco Chemical Company
    Inventors: Michael L. Braden, Richard E. Metzgar, Jitendra T. Shah
  • Patent number: 5720887
    Abstract: The present invention provides a method for dewatering sludge that utilizes the step-wise and sequential addition to the sludge of a cationic polyamine and a cationic polyacrylamide.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: February 24, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Stephen R. Vasconcellos, Michael R. Wood, Kimberly A. Bell
  • Patent number: 5707532
    Abstract: Compositions comprising polyamine and melamine polymers in certain ratios are provided for coagulating suspended solids in wastewaters such as deinking process waters and raw waters.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: January 13, 1998
    Assignee: Cytec Technology Corp.
    Inventors: Gerald Guerro, Wendy L. DiNicola, Nicole Richards
  • Patent number: 5707531
    Abstract: Oil emulsions are broken in a particularly advantageous manner by adding to them a breaker which comprises poly-DADMAC and polyalkylenepolyamines.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: January 13, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernhard Lehmann, Ulrich Litzinger
  • Patent number: 5659002
    Abstract: The invention is a process for preparing alkylated tannin Mannich polymers by reacting a tannin Mannich condensation polymer, prepared from a condensed tannin, and amine, and formaldehyde, with an alkylating agent at a pH between 5 and 14. Optionally, the alkylated tannin Mannich polymer may be reacted further with formaldehyde to increase its viscosity.The invention further comprises a method of removing color form waste water utilizing the alkylated tannin Mannich polymer produced by the above process.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: August 19, 1997
    Assignee: Nalco Chemical Company
    Inventors: Peter E. Reed, Martha R. Finck
  • Patent number: 5611934
    Abstract: A process for dye removal from effluent is disclosed which includes treating the effluent with a reducing agent, adjusting the pH to a selected value in the range of 2-7, treating the effluent with a particular charge neutralization mixture, adjusting the pH a second time and subjecting the mixture to a flocculating process with selected chemicals.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: March 18, 1997
    Assignee: Hoechst Celanese Corporation
    Inventors: Paul W. Shepperd, III, Larry W. Becker, Robert J. Cundiff
  • Patent number: 5562833
    Abstract: In a paint spray booth wherein water is used to collect oversprayed paint, a process is disclosed for detackifying and coagulating oversprayed paint by the independent and concurrent addition of specific amounts of specific anions and cationic polymers to the water system.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: October 8, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Howard B. Agree, Robert A. Iezzi
  • Patent number: 5554298
    Abstract: The invention comprises a method of preventing deposition of oil on steel mill scale particles comprising adding from about 1 part per million to about 500 parts per million of an amine acrylate/acrylic acid copolymer to mill flume water. Once the copolymer is added, deposition of oil onto scale particles is prevented. The recovered mill scale has less than 2% oil by weight on the scale, making it suitable for recycle to the steelmaking process. Oil and water are subsequently separated with a greater percentage of oil being recovered.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: September 10, 1996
    Assignee: Nalco Chemical Company
    Inventors: Ronald D. Kochik, David A. Picco, Michael L. Braden, Kristine S. Salmen
  • Patent number: 5549832
    Abstract: A process and apparatus for the treatment and recovery of spent vehicle coolant that involves the following steps:a) removing the spent coolant from the engine;b) treating the spent coolant with sodium dimethyldithiocarbamate to cause dissolved metals therein to form insoluble particles;c) treating the spent coolant of step b) with an aqueous basic coagulating agent such as a polyquaternary ammonium compound in its hydroxide form;d) filtering the spent coolant from step c) through a set of filters and then through a bed of carbon particles, to produce a relatively cleaner liquid; ande) adding to the relatively clear liquid a combination of corrosion inhibitors, buffering agents and alkali, whereby the treated coolant can be recycled to the vehicle for effective coolant performance therein.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: August 27, 1996
    Assignee: Century Manufacturing Company
    Inventors: Kenneth W. Ische, Michael W. Johnson, William S. Dea, Thomas D. Chandler
  • Patent number: 5531907
    Abstract: The present invention provides a method for purifying agricultural waste. The method includes the steps of adding effective amounts of at least one polymer flocculent, at least one coagulant, and at least one precipitant. The combined effect of the various components of the present invention not only purifies the agricultural waste but also yields a dewatered organic mass for composting to act as a peat replacement.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: July 2, 1996
    Assignee: Nalco Limited
    Inventors: Paul J. Williams, Susan Tolkien
  • Patent number: 5529696
    Abstract: A method of laundering oily items comprises laundering said items in a wash solution which includes a surfactant system and a source of alkalinity. The source of alkalinity is an alkali metal aluminate preferably sodium aluminate at a concentration effective to have at least about 25 ppm of the alkali aluminate present in the wash solution measured as alumina. The wash solution is then separated from the laundered items and its pH reduced to about 9 or less. A destabilizing polymer such as diallyldimethyl ammonium chloride can be added. This combination causes the oil and grease to separate from the wash solution and float to the surface along with the sodium aluminate. If the concentration of the sodium aluminate is above about 100 ppm preferably about 250 ppm, there is no need to add the destabilizing polymer. This does not affect the overall efficiency of the detergent, yet significantly improves the ability to separate the oil and grease from the waste wash solution.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: June 25, 1996
    Assignee: Diversey Corporation
    Inventor: Dave Tibbitts
  • Patent number: 5454955
    Abstract: Hectorite is utilized in conjunction with a water soluble cationic coagulant to clarify waste water from the deinking of waste paper.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: October 3, 1995
    Assignee: Nalco Chemical Company
    Inventors: William E. Albrecht, David W. Reed, James H. Smith
  • Patent number: 5435921
    Abstract: The invention comprises a process for removing true and apparent color from pulp and paper waste waters. It comprises treating these waste waters with a coagulant and vinylamine polymer. The coagulant is selected from the group consisting of epichlorohydrin-dimethylamine, guanidine-formaldehyde condensation polymers, cyanoguanidine-formaldehyde condensation polymers, urea-formaldehyde condensation polymers, polyethyleneimines, polydiallyldimethylammonium chloride, copolymers of polydiallyldimethylammonium chloride and acrylamide, and ethylenedichloride-ammonia. The vinylamine polymer includes from about 1 to about 100 mole percent vinylamine and from about 1 to about 99 mole percent of at least one monomer selected from the group consisting of amidine vinylformamide, vinyl alcohol, vinyl acetate, vinyl pyrrolidinone and the esters, amides, nitriles and salts of acrylic acid and methacrylic acid.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: July 25, 1995
    Assignee: Nalco Chemical Company
    Inventors: John H. Collins, Dodd W. Fong, Anthony G. Sommese, Amy M. Tseng
  • Patent number: 5415782
    Abstract: Siliceous materials produced by thermally treating spent Bayer process liquors are obtained in modified form when produced in the presence of polymeric quaternary ammonium compounds, polyamine polymers, copolymers of acrylic acid and acrylamide, and polyacrylamides. These modified siliceous materials possess morphologies which confer upon them a reduced tendency to deposit on surfaces throughout the process.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: May 16, 1995
    Assignee: Nalco Chemical Company
    Inventor: Peter A. Dimas
  • Patent number: 5413719
    Abstract: A method for optimizing the dosage of a polyelectrolyte treating agent in a water treatment process using a fluorescent material having the opposite electrical charge as a polyelectrolyte treating agent used to treat water in a water treatment process.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: May 9, 1995
    Assignee: Nalco Chemical Company
    Inventors: Ananthasubra Sivakumar, Jitendra Shah, Narasimha M. Rao, Scott S. Budd
  • Patent number: 5395536
    Abstract: A process for removing carboxylic acids from aqueous solutions using a composition of a polyaluminum chlorohydrate and a cationic polyelectrolyte is described. After or during the initial contact of the aqueous solution with the composition, an organic liquid may optionally be added after which separation into an aqueous phase and an organic phase occurs whereby the organic acids are removed in the organic phase. The preferred polyaluminum chlorohydrate is aluminum chlorohydrate, and the preferred cationic polyelectrolyte is a high molecular weight poly(dimethyl diallyl) ammonium chloride.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: March 7, 1995
    Assignee: Baker Hughes, Inc.
    Inventors: William M. Brown, Maria Trevino
  • Patent number: 5360551
    Abstract: A highly colored dye wastewater is treated by a sequence of steps to obtain a color reduction of 90 percent or more. The method requires acidifying the wastewater and adding a cationic flocculant. A reducing agent is then, optionally, added to further reduce the color value of the wastewater and produce an oxidation-reduction potential of at least -200 and, generally, about -400 to -800. The reducing agent is, preferably, either a hydrosulfite or both a bisulfite and an alkali metal borohydride.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: November 1, 1994
    Assignee: Crompton & Knowles Corporation
    Inventor: Oscar W. Weber
  • Patent number: 5354480
    Abstract: The dewatering of sludge is improved by utilizing a water-soluble cationic copolymer in the aqueous phase of a water-in-oil emulsion wherein the copolymer has been prepared by (i) preparing an aqueous solution of a non-ionic monomer and a portion of the cationic monomer, (ii) emulsifying the aqueous solution in a hydro-carbon oil to form a water-in-oil emulsion, (iii) adding the balance of the total intended cationic monomer to the emulsion while substantially no polymerization is occurring, and (iv) polymerizing the monomers.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: October 11, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Peter M. Robinson, Nguyen Van-Det
  • Patent number: 5346627
    Abstract: A method is provided for removing metals from a fluid stream containing these metals. The method involves treating the fluid stream with a water soluble ethylene dichloride ammonia polymer having a molecular weight of from 500 to 100,000 that contains at least 5 mole percent of dithiocarbamate salt groups to form a complex with the metals. Then, the fluid stream is passed through a filtering device to remove the complexes from the fluid stream.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: September 13, 1994
    Assignee: Nalco Chemical Company
    Inventors: Kristine S. Siefert, Pek L. Choo, John W. Sparapany, John H. Collins
  • Patent number: 5330656
    Abstract: A method for treating a waste system containing an oil phase dispersed on a water phase is disclosed that includes adding a polysalt having an anionic polymer component and a cationic polymer component wherein the weight ratio of the anionic polymer component to the cationic polymer component ranges from about 5:95 to 40:60, on an active basis.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: July 19, 1994
    Assignee: Calgon Corporation
    Inventor: Denis E. Hassick
  • Patent number: 5326479
    Abstract: A process for removing color from a pulp and paper wastewater which comprises the following steps: (a) treating the wastewater with a reducing agent which is capable of inactivating color producing functional groups of the wastewater; and (b) treating the wastewater subsequent to step (a) with a polymer which is capable of removing color from the wastewater.
    Type: Grant
    Filed: September 1, 1993
    Date of Patent: July 5, 1994
    Assignee: Nalco Chemical Company
    Inventors: Jawed M. Sarkar, Amy M. Tseng, John H. Collins
  • Patent number: 5304638
    Abstract: A separation medium for use in protein separation comprising a water-insoluble matrix carrying a plurality of polyamine groupings, the polyamine groupings having at least three basic nitrogen atoms, the basic nitrogen atoms being separated from each other by a chain of at least two intervening carbon atoms, there being a total of 5 such intervening carbon atoms when there is a total of three nitrogen atoms in each polyamine group, which may be used for at least partially purifying factor VIII.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: April 19, 1994
    Assignee: Central Blood Laboratories Authority
    Inventors: Philip J. Marshall, Christopher R. Lowe
  • Patent number: 5294352
    Abstract: A composition for the detackification and clarification of acid and alkaline paint and lacquer waste waters and paint spray booth wastes, comprising:an inorganic-organic and/or organic adduct alloy polymer composition having the formula:A.multidot.B.sup.+ .multidot.D.sup.+wherein:A=[(SiO.sub.2 /Me.sup.I.sub.2 O).sub.u Me.sup.II.sub.m Me.sub.m.sup.III(OH) p.sup.(SO 4.sup.) y.sup.(Aci) (2m+3n)-p-2y].sub.4wherer=1 to 98% bw;u=0 to 10% bw; ##STR1## where: x=0 to 98% bw; Z is a divalent substituted or unsubstituted aliphatic, cycloaliphatic, heterocyclic or aromatic radicalD.sup.+ (PQAM).sub.wwherew=2 to 98% b.w. of polyquaternized polymer (PQAM)Me.sub.m.sup.II is selected from the divalent cationic group comprising: Mg, Zn, Ca, and Fe.sup.2+m=0 to 5Me.sub.n.sup.III is a tri-or more valent metal selected from the group comprising: Fe, Al, and Al-Zn complexes;n=1 to 20Aci is selected from the monovalent anionic group comprising Cl.sup.-, Br.sup.-, I.sup.-, NO.sub.3 --, H.sub.2 PO.sub.4 --, CH.sub.3 COO.sup.-, OH.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: March 15, 1994
    Inventor: John J. Waldmann
  • Patent number: 5292441
    Abstract: The use of quaternized polyvinylamines for use in water clarification is disclosed.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: March 8, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Jen-Chi Chen, Stephen R. Vasconcellos, Gerald C. Walterick, Jr., Fu Chen