Derived From Alkyl Halide Or Epihalophydrin Reactant Patents (Class 210/736)
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Patent number: 9950953Abstract: 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: GrantFiled: May 11, 2012Date of Patent: April 24, 2018Assignees: GCP Applied Technologies Inc., SNF S.A.S.Inventors: Lawrence L. Kuo, Cedrick Favero, Christophe Roux, Nathan A. Tregger
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Patent number: 9811021Abstract: 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: GrantFiled: November 3, 2015Date of Patent: November 7, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Norifumi Muranaka, Satoru Yamada, Kazuhiro Yamauchi, Seiji Tsuru, Yuka Muranaka
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Publication number: 20150129506Abstract: 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: ApplicationFiled: November 6, 2014Publication date: May 14, 2015Applicant: Georgia-Pacific Chemicals LLCInventors: David R. Snead, Clay E. Ringold, Brian L. Swift
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Patent number: 8858803Abstract: 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: GrantFiled: November 22, 2010Date of Patent: October 14, 2014Assignee: General Electric CompanyInventors: Tamaz Guliashvili, Stephen R. Vasconcellos
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Publication number: 20140284519Abstract: 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: ApplicationFiled: October 30, 2012Publication date: September 25, 2014Inventors: Daniel E. Gerard, Hans-Georg Hartan, Joachim Schoelkopf, Michael Skovby, Patrick A.C. Gane
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Patent number: 8815960Abstract: 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: GrantFiled: December 10, 2009Date of Patent: August 26, 2014Assignee: Instituto Mexicano Del PetroleoInventors: Gabriel Cendejas Santana, Eugenio Alejandro Flores Oropeza, Laura Verónica Castro Sotelo, Aristeo Estrada Buendía, Marcelo Lozada y Cassou, Flavio Salvador Vázquez Moreno
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Patent number: 8728326Abstract: 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: GrantFiled: March 29, 2011Date of Patent: May 20, 2014Assignee: General Electric CompanyInventors: Wenqing Peng, Yangang Liang, Shengxia Liu, Larry Neil Lewis, Robert James Perry, Stephen Robert Vasconcellos, Su Lu, Guixi Zhang
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Publication number: 20140131284Abstract: 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: ApplicationFiled: January 22, 2014Publication date: May 15, 2014Applicant: S.P.C.M. SAInventors: Cedrick FAVERO, Amelia E. Taylor
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Publication number: 20110089119Abstract: 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: ApplicationFiled: December 22, 2010Publication date: April 21, 2011Inventors: Gerald C. WALTERICK, JR., William S. Carey, Fang Deng
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Patent number: 7514007Abstract: 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: GrantFiled: March 22, 2005Date of Patent: April 7, 2009Assignee: WSP Chemicals & Technology, LLCInventors: Shih-Ruey T Chen, Valentino L. DeVito, Kevin W. Frederick
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Patent number: 7431845Abstract: 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: GrantFiled: June 23, 2005Date of Patent: October 7, 2008Assignee: Nalco CompanyInventors: Maria B. Manek, Michael J. Howdeshell, Kirk E. Wells, Hester A. Clever, William K. Stephenson
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Patent number: 7030163Abstract: 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: GrantFiled: February 15, 2002Date of Patent: April 18, 2006Assignee: Ipsilon Laboratories CCInventor: Nicolaas Duneas
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Patent number: 6635182Abstract: 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: GrantFiled: May 4, 2001Date of Patent: October 21, 2003Assignee: Industrial Waste Water Services, LLPInventor: C. Lamar Coleman, Jr.
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Patent number: 6613230Abstract: 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: GrantFiled: June 27, 2001Date of Patent: September 2, 2003Assignee: Ionics, IncorporatedInventors: Gerald A. Krulik, Paul H. Dick, Josh H. Golden, Jay Jung, Gennadiy Sverdlov
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Patent number: 6491827Abstract: 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: GrantFiled: November 17, 2000Date of Patent: December 10, 2002Assignee: Steen Research, LLCInventors: Stephen R. Temple, Michael J. Stoltz
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Patent number: 6358364Abstract: 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: GrantFiled: April 22, 2001Date of Patent: March 19, 2002Assignee: Nalco Chemical CompanyInventors: Bruce A. Keiser, James E. Whitten
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Patent number: 6325936Abstract: 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: GrantFiled: September 10, 1999Date of Patent: December 4, 2001Assignee: Fuji Jukogyo Kabushiki KaishaInventor: Toshio Niijima
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Patent number: 6258277Abstract: 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: GrantFiled: August 14, 2000Date of Patent: July 10, 2001Assignee: Nalco Chemical CompanyInventors: Kristine S. Salmen, Angela S. Kowalski, E. H. Kelle Zeiher, William J. Ward
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Patent number: 6203711Abstract: 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: GrantFiled: May 21, 1999Date of Patent: March 20, 2001Assignee: E. I. du Pont de Nemours and CompanyInventor: Robert Harvey Moffett
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Patent number: 6177017Abstract: 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: GrantFiled: April 6, 2000Date of Patent: January 23, 2001Assignee: Nalco Chemical CompanyInventor: William J. Ward
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Patent number: 6140130Abstract: 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: GrantFiled: July 13, 1998Date of Patent: October 31, 2000Assignee: Nalco Chemical CompanyInventors: Kristine S. Salmen, Angela S. Kowalski, Brian V. Jenkins, John E. Hoots
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Patent number: 6136220Abstract: 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: GrantFiled: August 31, 1999Date of Patent: October 24, 2000Assignee: BetzDearborn Inc.Inventors: Howard B. Agree, Barry P. Gunagan, Edward A. Rodzewich
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Patent number: 6136200Abstract: 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: GrantFiled: March 11, 1994Date of Patent: October 24, 2000Assignee: Polymer Research CorporationInventor: John J. Waldmann
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Patent number: 6120690Abstract: 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: GrantFiled: August 12, 1998Date of Patent: September 19, 2000Inventor: Richard Alan Haase
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Patent number: 6059978Abstract: 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: GrantFiled: May 6, 1998Date of Patent: May 9, 2000Assignee: Simco Holding CorporationInventors: Joseph A. Pacifici, Daniel G. Sims
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Patent number: 5985154Abstract: 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: GrantFiled: January 29, 1998Date of Patent: November 16, 1999Assignee: Betz Dearborn Inc.Inventors: Howard B. Agree, Barry P. Gunagan, Edward A. Rodzewich
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Patent number: 5961838Abstract: 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: GrantFiled: December 18, 1997Date of Patent: October 5, 1999Assignee: Nalco Chemical CompanyInventors: Michael L. Braden, Richard E. Metzgar, Jitendra T. Shah
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Patent number: 5720887Abstract: 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: GrantFiled: November 21, 1996Date of Patent: February 24, 1998Assignee: BetzDearborn Inc.Inventors: Stephen R. Vasconcellos, Michael R. Wood, Kimberly A. Bell
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Patent number: 5707532Abstract: 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: GrantFiled: September 17, 1996Date of Patent: January 13, 1998Assignee: Cytec Technology Corp.Inventors: Gerald Guerro, Wendy L. DiNicola, Nicole Richards
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Patent number: 5707531Abstract: Oil emulsions are broken in a particularly advantageous manner by adding to them a breaker which comprises poly-DADMAC and polyalkylenepolyamines.Type: GrantFiled: August 5, 1996Date of Patent: January 13, 1998Assignee: Bayer AktiengesellschaftInventors: Bernhard Lehmann, Ulrich Litzinger
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Patent number: 5659002Abstract: 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: GrantFiled: March 24, 1995Date of Patent: August 19, 1997Assignee: Nalco Chemical CompanyInventors: Peter E. Reed, Martha R. Finck
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Patent number: 5611934Abstract: 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: GrantFiled: December 18, 1995Date of Patent: March 18, 1997Assignee: Hoechst Celanese CorporationInventors: Paul W. Shepperd, III, Larry W. Becker, Robert J. Cundiff
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Patent number: 5562833Abstract: 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: GrantFiled: February 3, 1995Date of Patent: October 8, 1996Assignee: Betz Laboratories, Inc.Inventors: Howard B. Agree, Robert A. Iezzi
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Patent number: 5554298Abstract: 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: GrantFiled: January 20, 1995Date of Patent: September 10, 1996Assignee: Nalco Chemical CompanyInventors: Ronald D. Kochik, David A. Picco, Michael L. Braden, Kristine S. Salmen
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Patent number: 5549832Abstract: 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: GrantFiled: December 22, 1994Date of Patent: August 27, 1996Assignee: Century Manufacturing CompanyInventors: Kenneth W. Ische, Michael W. Johnson, William S. Dea, Thomas D. Chandler
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Patent number: 5531907Abstract: 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: GrantFiled: August 30, 1994Date of Patent: July 2, 1996Assignee: Nalco LimitedInventors: Paul J. Williams, Susan Tolkien
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Patent number: 5529696Abstract: 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: GrantFiled: July 20, 1995Date of Patent: June 25, 1996Assignee: Diversey CorporationInventor: Dave Tibbitts
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Patent number: 5454955Abstract: Hectorite is utilized in conjunction with a water soluble cationic coagulant to clarify waste water from the deinking of waste paper.Type: GrantFiled: March 25, 1994Date of Patent: October 3, 1995Assignee: Nalco Chemical CompanyInventors: William E. Albrecht, David W. Reed, James H. Smith
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Patent number: 5435921Abstract: 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: GrantFiled: May 9, 1994Date of Patent: July 25, 1995Assignee: Nalco Chemical CompanyInventors: John H. Collins, Dodd W. Fong, Anthony G. Sommese, Amy M. Tseng
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Patent number: 5415782Abstract: 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: GrantFiled: November 22, 1993Date of Patent: May 16, 1995Assignee: Nalco Chemical CompanyInventor: Peter A. Dimas
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Patent number: 5413719Abstract: 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: GrantFiled: January 18, 1994Date of Patent: May 9, 1995Assignee: Nalco Chemical CompanyInventors: Ananthasubra Sivakumar, Jitendra Shah, Narasimha M. Rao, Scott S. Budd
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Patent number: 5395536Abstract: 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: GrantFiled: May 7, 1993Date of Patent: March 7, 1995Assignee: Baker Hughes, Inc.Inventors: William M. Brown, Maria Trevino
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Patent number: 5360551Abstract: 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: GrantFiled: April 1, 1993Date of Patent: November 1, 1994Assignee: Crompton & Knowles CorporationInventor: Oscar W. Weber
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Patent number: 5354480Abstract: 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: GrantFiled: February 18, 1992Date of Patent: October 11, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Peter M. Robinson, Nguyen Van-Det
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Patent number: 5346627Abstract: 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: GrantFiled: September 20, 1993Date of Patent: September 13, 1994Assignee: Nalco Chemical CompanyInventors: Kristine S. Siefert, Pek L. Choo, John W. Sparapany, John H. Collins
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Patent number: 5330656Abstract: 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: GrantFiled: March 5, 1993Date of Patent: July 19, 1994Assignee: Calgon CorporationInventor: Denis E. Hassick
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Patent number: 5326479Abstract: 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: GrantFiled: September 1, 1993Date of Patent: July 5, 1994Assignee: Nalco Chemical CompanyInventors: Jawed M. Sarkar, Amy M. Tseng, John H. Collins
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Patent number: 5304638Abstract: 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: GrantFiled: December 4, 1991Date of Patent: April 19, 1994Assignee: Central Blood Laboratories AuthorityInventors: Philip J. Marshall, Christopher R. Lowe
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Patent number: 5294352Abstract: 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: GrantFiled: April 15, 1993Date of Patent: March 15, 1994Inventor: John J. Waldmann
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Patent number: 5292441Abstract: The use of quaternized polyvinylamines for use in water clarification is disclosed.Type: GrantFiled: January 12, 1993Date of Patent: March 8, 1994Assignee: Betz Laboratories, Inc.Inventors: Jen-Chi Chen, Stephen R. Vasconcellos, Gerald C. Walterick, Jr., Fu Chen