Patents Represented by Attorney James J. Drake

Find this attorney in the Justia Lawyer Directory

  • Corrosion inhibition in refineries using the reaction product of hydrocarbyl succinic anhydride and an amine
    Patent number: 5556575
    Abstract: Disclosed are a method for inhibiting corrosion in crude oil distillation towers, an improvement in crude oil fractionation, a method for dispersing iron sulfide in a hydrocarbon stream and a hydrocarbon dispersion using the reaction product of hydrocarbyl succinic anhydride and an amine. The reaction product has a molecular weight of from 500-800, the hydrocarbyl substituent has 6-20 carbon atoms, and the amine is selected from EDA, DETA, TETA, TEPA, PEHA, AEP, piperazine, 1,2-PDA, 1,3-PDA, IBPA, MDA or HMDA. The imide product is a filming inhibitor used to treat metal surfaces subject to mineral acid corrosion and disperse iron sulfide particles by adding 3 to 24 ppm to sweet or sour crude contacting the metal surfaces.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: September 17, 1996
    Assignee: Nalco/Exxon Energy Chemicals L.P.
    Inventors: Elizabeth Babaian-Kibala, Veronica K. Braden, Michael K. Poindexter, Christopher J. Murphy
  • Steel mill flume water treatment
    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
  • Phosphorus thioacid ester inhibitor for naphthenic acid corrosion
    Patent number: 5552085
    Abstract: Corrosion of the metallic surfaces of distillation columns, trays, packing, and pumparound piping used in the production of hydrocarbons can be controlled by adding a neutralized or non-neutralized thio-phosphate or thio-phosphite ester to the hydrocarbon distillate contacting the metallic surfaces.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: September 3, 1996
    Assignee: Nalco Chemical Company
    Inventor: Elizabeth Babaian-Kibala
  • Preparation of amphoteric acrylic acid copolymers suitable as oil-in-water emulsion breakers
    Patent number: 5552498
    Abstract: The invention comprise a composition for breaking oil-in-water emulsions comprising adding from about 1 part per million to about 500 parts per million of an amphoteric acrylic acid copolymer to the emulsion. Once the copolymer is added, the emulsion is subjected to agitation until the oil-in-water emulsion is resolved and the oil and water separates into two phases. The oil and water phases are then subjected to a separation technique to separate the phases. The invention further comprises a method of synthesizing the amphoteric polymers used in the emulsion breaking application.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: September 3, 1996
    Assignee: Nalco Chemical Company
    Inventor: Michael L. Braden
  • Oil dewaxing method
    Patent number: 5547562
    Abstract: The invention decloses a method for dewaxing a hydrocarbon oil which comprises adding an oil-soluble poly C.sub.18 -C.sub.22 alkylmethacrylate having a molecular weight of from about 10,000 to about 2,000,000 daltons to a hydrocarbon oil containing wax; cooling the oil to allow wax crystals to form, separating the wax crystals from the oil and recovering a dewaxed oil.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: August 20, 1996
    Assignee: Nalco/Exxon Energy Chemicals, L.P.
    Inventors: Rupinder S. Grewal, Michael E. Joyce, Randall F. Nord
  • Sulfonated and carboxylated aminoethylenephosphonic acid and aminobis (methylene) phosphinic acid
    Patent number: 5534611
    Abstract: Novel sulfonated or carboxylated and phosphonomethylated polymers are prepared by first sulfoalkylating or carboxyalkylating polyamines followed by linking of the polyamines through a bis(methylene)phosphinic acid divalent group to form polymers which are then phosphonomethylated.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: July 9, 1996
    Assignee: Nalco Chemical Company
    Inventors: David A. Huddleston, Robert K. Gabel
  • Polymers containing phosphonic acid groups for the treatment of red mud in the Bayer process
    Patent number: 5534235
    Abstract: The invention comprises a process for improved flocculation of Bayer process red mud-containing slurry. The improvement comprises adding to the red mud-containing liquor a phosphonic acid polymer optionally in addition to the conventional flocculant. The polymer is added to the red mud-containing liquor in an amount sufficient to reduce the concentration of suspended solids in the supernatant phase and/or increase the rate of sedimentation.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: July 9, 1996
    Assignee: Nalco Chemical Company
    Inventors: Peter E. Reed, Robert P. Mahoney
  • Method of dewatering coal using vinyl amine-containing coagulants
    Patent number: 5529588
    Abstract: The invention provides an improved method for dewatering coal tailing aqueous slurries in a twin belt press process. The method including the step of adding to the slurry a high molecular weight anionic flocculant followed by a coagulant containing vinylamine. The flocculated coal is then mechanically dewatered using a twin belt press.
    Type: Grant
    Filed: June 13, 1995
    Date of Patent: June 25, 1996
    Assignee: Nalco Chemical Company
    Inventors: Anthony G. Sommese, Krishnan J. Pillai
  • Silicon polyelectrolytes for pitch deposit control
    Patent number: 5527431
    Abstract: A method for controlling pitch in papermaking systems which comprises the step of adding a water-soluble, silicon-containing polyelectrolyte copolymer coagulant to pulp and paper process water. The water-soluble, silicon-containing polyelectrolyte copolymer coagulant preferably comprises diallyldimethyl ammonium chloride and a vinyl alkoxysilane.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 18, 1996
    Assignee: Nalco Chemical Company
    Inventors: Chandrashekar S. Shetty, Manian Ramesh
  • Oxyalkylated phenol/formaldehyde resin for desalter applications in the refinery Industry
    Patent number: 5525201
    Abstract: Certain base catalyzed oxyalkylated-cardanol-alkylphenol-aldehyde resins may be utilized in refinery demulsification operations. These materials find particular utility in breaking water-in-oil emulsions resulting from the water wash of crude oils. The materials may also be employed to break other water-in-oil refinery emulsions.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: June 11, 1996
    Assignee: Nalco Chemical Company
    Inventors: Hernando Diaz-Arauzo, Paul M. Lindemuth, Bryan T. O'Reilly
  • Co-polymer containing compositions for ceramic processing
    Patent number: 5525665
    Abstract: A composition suitable for use as a binder of ceramic materials is disclosed. The improved binder contains substantially hydrolyzed copolymer made from monomers having ester or amide functional groups, poly(vinyl formamide) or a copolymer of vinyl alcohol and vinyl amine.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: June 11, 1996
    Assignee: Nalco Chemical Company
    Inventors: Kevin J. Moeggenborg, Peter E. Reed
  • Coagulant for twin belt filter presses
    Patent number: 5518634
    Abstract: A chemically assisted process for dewatering mining waste solids on mechanical separation devices with at least one flocculant and at least one coagulant. It comprises using as the coagulant a diallyldimethyl ammonium chloride copolymer which contains from 3-25 mole % of acrylamide and which has been cross linked with from 0.01 to 0.5 mole % of triallyl amine.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: May 21, 1996
    Assignee: Nalco Chemical Company
    Inventors: Krishnan J. Pillai, E. Michael Kerr
  • Removing silica from cooling waters with colloidal alumina and dialysis
    Patent number: 5512181
    Abstract: The-silica content of cooling water blow-down waters is reduced by contacting these waters with a colloidal alumina which adsorbs a portion of the silica. The blow-down is then dialyzed to produce a permeate having a reduced silica content. In a preferred embodiment of the invention the permeate is recycled.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: April 30, 1996
    Assignee: Nalco Chemical Company
    Inventor: Stephen A. Matchett
  • Removal of selenium from water by complexation with polymeric dithiocarbamates
    Patent number: 5510040
    Abstract: Selenium compounds present in aqueous liquids can be removed using a poly dithiocarbamate materials. The selenium compounds are then removed by precipitation or sedimentation. Optionally, an oxidizing agent may be added to the system prior to the addition of the poly dithiocarbamate. Various filtration methods may be employed to remove the selenium-dithiocarbamate materials from aqueous liquids.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: April 23, 1996
    Assignee: Nalco Chemical Company
    Inventors: Thomas M. Miller, Walter H. Goodman
  • Vinyl alkoxysilane copolymer polyelectrolytes for pitch deposit control
    Patent number: 5510439
    Abstract: A method for controlling pitch in papermaking systems which comprises the step of adding a hydrophobic polyelectrolyte copolymer coagulant to pulp and paper process water. The hydrophobic polyelectrolyte copolymer coagulant preferably comprises a first monomer selected from the group of hydrophilic monomers and hydrophobic monomers, and a vinyl siloxane monomer.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: April 23, 1996
    Assignee: Nalco Chemical Company
    Inventors: Chandrashekar S. Shetty, Manian Ramesh
  • Process for preventing the formation of deposits in a construction drainage system
    Patent number: 5510038
    Abstract: In drainage systems in buildings and excavations there is waste and ground water with a high dissolved material content. These mainly inorganic substances often cause the build-up of hard deposits in the water conveying parts of the drainage systems, e.g. waste water pipes. These deposits reduce the drainage cross section of the drainage systems thus preventing the water from flowing freely and thus causing back-ups which can result in considerable damage. The current processes of removing these deposits are electro-mechanical cleaning and high-pressure rinsing or abrading with water. These processes are laborious, expensive and cause interruptions in operation. It is the aim of the invention to prevent the formation of such deposits. To this end, a conditioning agent in aqueous form is added via a metering installation at one or more points in the drainage system.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: April 23, 1996
    Inventor: Marcel C. Wegmuller
  • Process for enhancing the freeness of papermaking pulp
    Patent number: 5507914
    Abstract: A process for enhancing the freeness of paper pulp, which comprises the steps of adding to the pulp from about 0.5 to about 2.5 kilograms per ton based on the dry weight of the pulp, of a cellulolytic enzyme at the vertical tank of the papermaking process, allowing the pulp to contact the cellulolytic enzyme for from about 30 minutes to about 60 minutes, adding at least 0.011%, based on the dry weight of the pulp, of a water soluble cationic polymer, adding at least 0.007%, based on the dry weight of the pulp, of a water soluble anionic polymer and forming the thus treated pulp into paper.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 16, 1996
    Assignee: Nalco Chemical Company
    Inventors: Jawed M. Sarkar, Hanuman P. Didwania
  • High temperature corrosion simulator
    Patent number: 5503006
    Abstract: An apparatus of provided for simulating corrosion activity of a high temperature liquid stream. The apparatus includes a canister in which is positioned a plug, occupying part of the internal volume of the canister. A stream of high temperature liquid enters the canister through an inlet, flows around the plug, and exits the canister through an outlet. The volume and configuration of the plug may be varied to simulate corrosion activity under various flow regimes. Probes may be placed in the liquid stream to detect corrosion activity and temperature. Several canisters may be arranged in series, and corrosion activity may be simulated in each canister simultaneously to determine effects of various parameters such as liquid impingement, velocity, and temperature on corrosion activity.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: April 2, 1996
    Assignee: Nalco Chemical Company
    Inventors: Elizabeth Babaian-Kibala, Joe S. Walker, John G. Hyatt, Sam Ferguson
  • Method of preventing yellow metal corrosion in aqueous systems with superior corrosion performance in reduced environmental impact
    Patent number: 5503775
    Abstract: The invention provides a method of preventing the corrosion of yellow metal surfaces in contact with water. The method comprising the step of adding to the water an environmentally safe mixed tolyltriazole composition including at least 65% of the 5-methylbenzotriazole isomer by weight.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: April 2, 1996
    Assignee: Nalco Chemical Company
    Inventors: Narasimha M. Rao, Frank F. Lu, Donald A. Johnson, Nhuan P. Nghiem
  • Enzymes in combination with polyelectrolytes for enhancing the freeness of clarified sludge in papermaking
    Patent number: 5501770
    Abstract: A process for improving the freeness of paper pulp, which comprises the steps of adding to the pulp at least 0.05%, based on the dry weight of the pulp, of a cellulolytic enzyme, allowing the pulp to contact the cellulolytic enzyme for from about 40 minutes to about 60 minutes at a temperature of at least 40.degree. C., adding at least 0.011%, based on the dry weight of the pulp, of a water soluble cationic polymer, adding at least 0.007%, based on the dry weight of the pulp, of a water soluble anionic or nonionic polymer and forming the thus treated pulp into paper.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: March 26, 1996
    Assignee: Nalco Chemical Company
    Inventors: Jawed M. Sarkar, Hanuman P. Didwania