Patents Represented by Attorney Robert A. Miller

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  • Hydrophobic polyelectrolytes used in removing color
    Patent number: 5338816
    Abstract: A hydrophobic polyelectrolyte copolymer which is useful in the removal of color in paper mill waste water. The copolymer preferably comprises diallyldimethylammonium chloride and a hydrophobic monomer selected from the group consisting of quaternized dimethylaminoethylacrylates and quaternized dimethylaminoethylmethacrylates.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: August 16, 1994
    Assignee: Nalco Chemical Company
    Inventors: Manian Ramesh, John W. Sparapany, Martha R. Finck, Kristine S. Siefert, Chandrashekar S. Shetty
  • Acrylamide co-polymers with (2-acrylamido-2-hydroxyethyl) lower trialkyl ammonium salts
    Patent number: 5336729
    Abstract: An acrylamide co-polymer which contains from between 1-60 mole percent of (2-acrylamido-2-hydroxy ethyl) trialkyl ammonium salt groups. These co-polymers are made by reacting (formylmethyl) trialykl ammonium salts at a pH of at least 9 and a temperature of between 15-80 degrees centigrade.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: August 9, 1994
    Assignee: Nalco Chemical Company
    Inventors: Dodd W. Fong, Frederick J. Swiecinski
  • Alkylation aid
    Patent number: 5334569
    Abstract: Alkylation catalyst of the type used in the refining of petroleum can be improved by using a promoter composition which contains an alkyl phosphate ester amine salt and pinene.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: August 2, 1994
    Assignee: Nalco Chemical Company
    Inventor: John C. Kisalus
  • Water clarification
    Patent number: 5332506
    Abstract: The invention provides a method of recovering water from an acid workover, the water including dispersed solids and emulsified oil. According to the method, the water is treated with an effective amount of a dispersion of a water-soluble cationic polymer.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: July 26, 1994
    Assignee: Nalco Chemical Company
    Inventors: Robert A. Marble, Timothy L. Sweeney
  • Iron sulfide dispersing agents
    Patent number: 5332491
    Abstract: A method is disclosed for dispersing iron sulfide in hydrocarbon streams found in refinery and petrochemical plant operations. The dispersant comprises a free radically polymerized copolymer of an .alpha.-olefin of from about 10 to about 36 carbon atoms and maleic anhydride wherein the anhydride moieties along the copolymer backbone are substantially unhydrolyzed. The copolymer has a ratio of .alpha.-olefin to maleic anhydride of from about 1 to about 5 and a molecular weight of from 5000 to about 100,000.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: July 26, 1994
    Assignee: Nalco Chemical Company
    Inventors: Sherri L. Fisher, Bradley D. Mercer
  • Recovery of oil from waste oil fluids
    Patent number: 5332507
    Abstract: The invention provides a method of recycling waste oil fluids including dispersed solids and emulsified water. According to the method, the waste oil is treated with an effective amount of a dispersion of a water-soluble cationic polymer.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: July 26, 1994
    Assignee: Nalco Chemical Company
    Inventors: Michael L. Braden, Wayne M. Carlson, Manian Ramesh, Ananthasubramanian Sivakumar
  • Dispersion polymers for oil field water clarification
    Patent number: 5330650
    Abstract: One aspect of the invention provides a method of removing emulsified oil from oil field produced water. According to the method, the oil-containing water is treated with an effective amount of a dispersion of a water-soluble cationic polymer.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: July 19, 1994
    Assignee: Nalco Chemical Company
    Inventors: Norman E. Byrne, Robert A. Marble, Manian Ramesh
  • Method of inhibiting corrosion in brine solutions
    Patent number: 5330683
    Abstract: An environmentally acceptable and economically appealing method of inhibiting corrosion in brine solution systems wherein an aqueous brine solution is treated with gluconate or sorbitol.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: July 19, 1994
    Assignee: Nalco Chemical Company
    Inventor: Barry W. Sufrin
  • Use of caustic and surfactant as a cleaner for recycled plastic
    Patent number: 5330581
    Abstract: A method for cleaning plastic objects, especially for recycling, whereby liquid surfactant and liquid caustic are added as separate feed streams to water to create a cleaning solution. The concentrations of surfactant and caustic in the cleaning solution are periodically monitored so that the feed rates can be adjusted as necessary to maintain the optimum concentrations of each component.
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: July 19, 1994
    Assignee: Nalco Chemical Company
    Inventor: Allen R. Syrinek
  • Hydrophobic polyelectrolyte coagulants for concentrating coal tailings
    Patent number: 5330546
    Abstract: A method for concentrating coal tailings which comprises steps of: feeding the coal tailings to a thickener; treating the coal tailings with a hydrophobic polyelectrolyte copolymer coagulant which comprises diallyldimethylammonium chloride and a more hydrophobic monomer, the coagulant is added to the coal tailings in an amount between about 0.05 to about 0.25 lb/ton; treating the coal tailings with a flocculant in an amount between about 0.05 to about 0.25 lb/ton; discharging substantially concentrated tailing; and withdrawing substantially clarified liquid from the thickener.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: July 19, 1994
    Assignee: Nalco Chemical Company
    Inventors: Manian Ramesh, Ram A. Venkatadri, Lawerence J. Connelly, Jeffrey R. Cramm
  • System using sulfide ion-selective electrodes for control of chemical feed of organic sulfide products for metal ion precipitation from waste water
    Patent number: 5328599
    Abstract: A wastewater treatment system and method for chemical precipitation and removal of metals from wastewater in a continuous or batch treatment process includes an ion-selective sulfide electrode and a reference electrode disposed in a precipitation tank for measuring an electrochemical potential therebetween in a predetermined range. A controller unit is provided which is responsive to the electrochemical potential in the predetermined range and is connected to a precipitant feed unit for automatically controlling the chemical precipitant fed into the precipitation tank.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: July 12, 1994
    Assignee: Nalco Chemical Company
    Inventors: Kristine S. Siefert, Pek L. Choo, Wayne M. Carlson
  • Alkylation aid
    Patent number: 5326924
    Abstract: Alkylation processes of the type used in the refining of petroleum can be improved by using a promoter composition which contains an alkyl phosphate ester amine salt and pinene.
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: July 5, 1994
    Assignee: Nalco Chamical Company
    Inventor: John C. Kisalus
  • Treatment of pulp and paper wastewater with reducing agent and a polymer for color removal
    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
  • On-line acid monitor and neutralizer feed control of the overhead water in oil refineries
    Patent number: 5326482
    Abstract: A method and apparatus for automatically measuring the acidity of overhead water in an oil refinery, and dispensing a neutralizing agent into the refinery system at a rate responsive to that measurement. A sample of overhead water is collected and passed through a filter and cation exchange resin. The acid concentration of the sample is then automatically measured and a signal generated based on the concentration. The signal goes to a controller which controls the dispensation rate of neutralizing agent into the refinery system, thus reducing the acidity of the overhead water and limiting the corrosive effects of such acidity.
    Type: Grant
    Filed: October 21, 1993
    Date of Patent: July 5, 1994
    Assignee: Nalco Chemical Company
    Inventors: Ronald B. Lessard, Paul Fearnside
  • Fouling prevention in ethylene dichloride distillation units
    Patent number: 5324393
    Abstract: A method for preventing fouling of ethylene dichloride distillation units which comprises treating the feed to such unit with a fouling preventing amount of a composition comprising (a) 2-15 weight % of an oil soluble polyacrylate ester or methacrylate ester with alcohol radical of the ester group containing from C.sub.4 -C.sub.22 carbon atoms which contains between 0.1-25 mole % of amino alcohol ester groups; (b) 20-40 weight % a phenylene diamine compound having the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are the same or different and are hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.1 -C.sub.20 aryl, C.sub.1 -C.sub.20 alkaryl or C.sub.1 -C.sub.20 aralkyl, with the proviso that at least one of R.sub.1, R.sub.2, R.sub.3 or R.sub.4 is hydrogen; and (c) the balance is a heavy aromatic solvent.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: June 28, 1994
    Assignee: Nalco Chemical Company
    Inventor: Michael K. Poindexter
  • Sprayable adhesive for gypsy moth pheromone beads
    Patent number: 5324517
    Abstract: An adhesive composition for a insect-control agent, such as gypsy moth pheromone beads, provides retention and water insolubility to such pesticide upon deposit of an aqueous mixture of such adhesive composition and insect-control agent. The adhesive composition concentrate comprises a salt such as sodium sulfate, an ethoxylated alkylphenol, a polymeric adhesive material, and a high molecular weight acrylate polymer.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: June 28, 1994
    Assignee: Nalco Chemical Company
    Inventor: Charles C. Payne
  • Water soluble corrosion inhibitors
    Patent number: 5322640
    Abstract: This invention is a method for inhibiting corrosion in metallic flow lines containing hydrocarbon and/or aqueous fluids comprising adding to the fluid contained in the flow line a corrosion inhibiting amount of a water-soluble ampholytic substituted imidazoline having the formula: ##STR1## wherein R1 comprises a radical selected from the group consisting of hydrogen, alkyl, and aryl groups having 6 to 30 carbons; R2 comprises a radical selected from the group consisting of polyalkylene polyamines having from 2 to 16 carbon atoms, NH.sub.2, N(R.sub.4).sub.2, OH and SH; R.sub.3 is a radical selected from the group consisting of carboxylate, carbonate, sulfite, sulfate, phosphite, and phosphate; n is a number from 1 to 10; and, R4 comprises a branched or linear alkyl chain having a length of 1 to 8.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: June 21, 1994
    Assignee: Nalco Chemical Company
    Inventors: Norman E. Byrne, John D. Johnson
  • Use of molybdate as corrosion inhibitor in a zinc/phosphonate cooling water treatment
    Patent number: 5320779
    Abstract: A corrosion inhibitor treatment composition for cooling water systems is disclosed in which no chromate is used and no free orthophosphate is present comprising a combination of a localized corrosion inhibitor in the form of a salt of molybdenum, vanadium, or tungsten, a general corrosion and scale inhibitor comprising zinc or nickel, a pair of organic phosphonates, and a stabilizing agent.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: June 14, 1994
    Assignee: Nalco Chemical Company
    Inventor: Kenneth P. Fivizzani
  • Boiler system leak detection
    Patent number: 5320967
    Abstract: Leakage of water from a boiler water system wherein steam is generated in a boiler from feedwater fed to the boiler, and the concentration of impurities in the boiler water within the boiler is reduced by withdrawing fractions thereof as blowdown while admitting additional feedwater as boiler-water makeup, is determined. The boiler has a concentration cycle value, the concentration cycle value being the average value of the concentration of an inert component in the blowdown at steady state (C.sub.F) divided by the concentration of the inert component in the feedwater (C.sub.I). The concentration of the inert component in the boiler at steady state varies from a high concentration C.sub.H, having a value that is higher than C.sub.F, to a low concentration C.sub.L, having a value between the (C.sub.I) and the (C.sub.F), within a time period.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: June 14, 1994
    Assignee: Nalco Chemical Company
    Inventors: Stanley C. Avallone, Roger W. Fowee, James R. MacDonald, Nicholas J. Furibondo
  • Method for the alteration of siliceous materials from Bayer process liquids
    Patent number: 5314626
    Abstract: Siliceous materials produced by thermally treating Bayer process liquors are obtained in modified form when produced in the presence of ammonium, aromatic amine, and amine compounds, or compounds bearing ammonium, aromatic amine or amine moieties, such as N-propylamine, pyridine and tetramethylammonium hydroxide. These modified siliceous materials possess morphologies which confer upon them a reduced tendency to deposit on surfaces throughout the process.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: May 24, 1994
    Assignee: Nalco Chemical Company
    Inventor: Peter A. Dimas