Patents Represented by Attorney Alexander D. Ricci
  • Patent number: 5772919
    Abstract: The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Halo-benzotriazoles such as chloro-tolyltriazole and bromo-tolyltriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: June 30, 1998
    Assignee: BetzDearborn Inc.
    Inventors: David W. Reichgott, Sydia B. Anderson, Michael A. Cady, Roger C. May, Anita G. Monino
  • Patent number: 5773590
    Abstract: The separation of black liquor, containing lignin, from tall oil is enhanced by the addition of a separation aid. The separation aid is an alkylphenol-formaldehyde resin alkoxylate, a poly (proplyene oxide) ethoxylate, an alkanol amine condensate, or combination thereof.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: June 30, 1998
    Assignee: BetzDearborn Inc.
    Inventor: Paul R. Hart
  • Patent number: 5773674
    Abstract: The polymerization of a vinyl aromatic monomer such as styrene is inhibited by the addition of a composition of a benzoquinone derivative and a hydroxylamine compound.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: June 30, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Graciela B. Arhancet, Inge K. Henrici
  • Patent number: 5773627
    Abstract: A method of preparing halo-benzotriazoles is disclosed. The method involves mixing an aqueous solution of sodium hypohalite with an aqueous slurry or suspension of a benzotriazole. Preferred sodium hypohalites are sodium hypochlorite or sodium hypobromite and the preferred benzotriazole is tolyltriazole.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: June 30, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Sydia B. Anderson, Michael A. Cady
  • Patent number: 5772740
    Abstract: Compositions and methods for passivating galvanized metal surfaces are disclosed. The addition of a paraffin wax, preferably emulsified with nonionic surfactants to commercial passivation treatment (chrome or non-chrome) enhances passivation.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: June 30, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Jiangbo Ouyang, William L. Harpel
  • Patent number: 5763482
    Abstract: An antimicrobial composition and method for controlling the growth of microbes in an aqueous system is disclosed, the composition comprising an amount, effective for the purpose of a 2-bromo-2- (bromomethyl)-glutaronitrile and a quaternary ammonium compound.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: June 9, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Donald J. Paterson, Howard A. Cash
  • Patent number: 5762757
    Abstract: Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking systems a composition comprising a dinonyl sulfosuccinate anionic surfactant which is used in systems containing multivalent cations, preferably calcium ions. The methods also utilize a blend of dioctyl sulfosuccinate and didecyl sulfosuccinate anionic surfactants.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: June 9, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Duy T. Nguyen, J. Barry Wright, Daniel Michalopoulos
  • Patent number: 5755971
    Abstract: A method of inhibiting the precipitation and deposition of calcium oxalate scale in an aqueous system is disclosed, in which an effective amount of a combination of a high molecular weight lignosulfonate compound and a phosphate compound is added to the system.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: May 26, 1998
    Assignee: BetzDearborn Inc.
    Inventors: William J. Palardy, Nancy A. DiAngelo
  • Patent number: 5756870
    Abstract: The polymerization of an ethylenically unsaturated monomer such as isoprene and butadiene is inhibited during storage or handling thereof by the addition of a dihydroxycinnamic acid or derivative thereof.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: May 26, 1998
    Assignee: BetzDearborn Inc.
    Inventor: Graciela B. Arhancet
  • Patent number: 5756880
    Abstract: Methods and apparatus are provided for detection of leaks in boilers containing a temperature control liquid which is supplemented with feedwater and removed as blowdown, main steam and sootblower steam. In a preferred embodiment, the boiler has an automatic liquid level control mechanism. The methods include measuring rates associated with feedwater supplementation and removal, determining the change of mass of the temperature control liquid, determining the unaccounted for water rate, and comparing the unaccounted for water rate with zero to determine if a leak condition is present.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: May 26, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Haiwen Chen, Ke Hong
  • Patent number: 5750052
    Abstract: Methods for controlling foam in hydrocarbon liquids within hydrocracking unit separator systems utilizing alkylphenolformaldehyde resin alkoxylates with a propylene oxide/ethylene oxide block copolymer having a molecular weight of from about 2000 to 6000 and having from about 20% to about 80% ethoxylation or an alkylarylsulfonic acid or alkylarylsulfonic acid amine salt to said hydrocarbon liquid.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: May 12, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Paul R. Hart, Michael A. Dion
  • Patent number: 5746888
    Abstract: Methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. Albumins, globulins or blends thereof and spray-dried animal blood cells are added to the pulp or sprayed onto deposition prone surfaces of a papermaking system suffering from organic contaminants.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: May 5, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Duy T. Nguyen, Tien-Feng Ling
  • Patent number: 5741433
    Abstract: A controlled-release supplement coolant additive for use in diesel engine coolant systems comprising a core containing at least one supplemental coolant additive (SCA) active component and a polymeric coating material encapsulating said core. The controlled released supplement coolant additive slowly releases the SCA active components to a diesel engine coolant system, thereby delivering an effective concentration level of SCA active components over an extended period. The controlled-release supplement coolant additive maintains a minimum concentration level of active SCA components in the coolant system. Additionally, the controlled-release supplemental coolant additive prevents overdosing the coolant system with particular SCA active components such as nitrates.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: April 21, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Wayne A. Mitchell, Kurt D. Heinz, Clifford Alvin Ferrin, Jr., Narender Pal Luthra
  • Patent number: 5738795
    Abstract: Copolymers of low molecular weight polysaccharides and cationic monomers, their method of production and method of using as water treatment agents are disclosed. Preferably the copolymer comprises alginic acid and methyl chloride quaternary salt of dimethylaminoethyl acrylate.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: April 14, 1998
    Assignee: BetzDearborn Inc.
    Inventor: Jen-Chi Chen
  • Patent number: 5736056
    Abstract: A treatment for enhancing the activity of biocidal compounds to control the growth of microbes in an aqueous system is disclosed, which comprises adding to said compounds an effective amount of an alkylsulfosuccinate surfactant.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: April 7, 1998
    Assignee: BetzDearborn Inc.
    Inventors: J. Barry Wright, Daniel Michalopoulos
  • Patent number: 5736058
    Abstract: A method for inhibiting the microbial adhesion on surfaces in contact with an aqueous system is disclosed, which comprises adding to the system a treatment comprising an alkylsulfosuccinate surfactant.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: April 7, 1998
    Assignee: BetzDearborn Inc.
    Inventors: J. Barry Wright, Daniel L. Michalopoulos
  • Patent number: 5730905
    Abstract: Oil-in-water (reverse) and water-in-oil (obverse) emulsions in crude oil production and processing systems are resolved by addition of a treatment solution comprising a copolymer of acryloxyethyltrimethyl ammonium chloride (AETAC) and acrylamide. The mole percent of AETAC is above about 20% and the molecular weight (grams per mole) of the copolymer is above about 2 million. The treatment solution is effective in matrix which include high percentages of oil and at high temperatures.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: March 24, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Paul R. Hart, J. Michael Brown, Edward J. Connors
  • Patent number: 5725611
    Abstract: Methods are provided for cleaning and inhibiting the formation of fouling deposits on jet engine components during the combustion of turbine combustion fuel oils. Methods are also provided for inhibiting the formation and emission of soot and smoke from jet engine exhaust during turbine combustion fuel oil combustion. The methods employ a derivative of polyalkenylthiophosphonic acid added to the turbine combustion fuel oil. The preferred derivative is pentaerythritol ester of polyisobutenylthiophosphonic acid.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: March 10, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Bruce E. Wright, William L. Witzig
  • Patent number: 5723021
    Abstract: Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100% hydrolysis, a high molecular weight gelatin having a molecular weight of about 100,000 or higher, and a cationic polymer.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: March 3, 1998
    Assignee: BetzDearborn Inc.
    Inventor: Duy T. Nguyen
  • Patent number: 5720902
    Abstract: Disclosed are methods and compositions for inhibiting the corrosion of low carbon steel in contact with aqueous systems. The composition comprises a silicon compound containing a hydrolyzable group, a complex fluoro acid, and a cross-linking agent.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: February 24, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Suzanne M. Zefferi, Edward A. Rodzewich