Patents Assigned to Betz Laboratories, Inc.
  • Patent number: 5658487
    Abstract: A contaminant precipitating composition and method are disclosed. The composition comprises a water soluble, branched, polydithiocarbamic acid salt effective for the purpose of precipitating contaminants from an aqueous solution. The method comprises adding an amount of the composition effective for the purpose to the aqueous solution so as to complex, precipitate and remove contaminants from the aqueous solution.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: August 19, 1997
    Assignee: Betz Laboratories, Inc.
    Inventors: William S. Carey, Ellen M. Meyer
  • Patent number: 5626718
    Abstract: The present invention is directed to a method for increasing the retention on a washing/thickening device in an aqueous papermaking system. The method generally comprises adding to the furnish solids of the system an effective amount of a cationic polyacrylamide polymer.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: May 6, 1997
    Assignee: Betz Laboratories, Inc.
    Inventors: Irenee J. Philippe, Frank J. Sutman, Thomas E. Taggart, Mary B. K. Letscher, Michael A. Schuster, John C. Harrington, IV
  • Patent number: 5601754
    Abstract: A polymer and method of controlling corrosion and the formation and deposition of scale imparting compounds in water systems is disclosed. The polymer has the general structure: ##STR1## wherein E.sup.1 comprises the repeat unit obtained after polymerization of one or more .alpha., .beta. ethylenically unsaturated monomers, selected from the group consisting of a carboxylic 3acid, lower alkyl (C.sub.1 -C.sub.6) ester or a hydroxylated lower alkyl (C.sub.1 -C.sub.6) ester of such carboxylic acid, and amide forms thereof; E.sup.2 comprises the repeat unit obtained after polymerization of one or more .alpha., .beta. ethylenically unsaturated monomer containing a sulfonic acid functionality; R.sup.1 is a hydrogen or a lower (C.sub.1 -C.sub.3) alkyl; R.sup.2 is --CH.sub.2 -- O--or --C(.dbd.O)--O--; R.sup.3 is --(--CH.sub.2 --CH(--CH.sub.2 --OH)--O--)--.sub.n ; n is an integer greater than 1; and R.sup.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: February 11, 1997
    Assignee: Betz Laboratories, Inc.
    Inventors: William S. Carey, Andrew Solov
  • Patent number: 5596130
    Abstract: Methods and compositions are provided for cleaning and inhibiting the formation of fouling deposits on jet engine components during the combustion of turbine combustion fuel oils. Methods and compositions 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 (thio)phosphonic acid added to the turbine combustion fuel oil. The preferred derivative is pentaerythritol ester of polyisobutenylthiophosphonic acid.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: January 21, 1997
    Assignee: Betz Laboratories, Inc.
    Inventors: Bruce E. Wright, William L. Witzig, Alan E. Goliaszewski, William S. Carey, Jeffrey H. Peltier
  • Patent number: 5565619
    Abstract: Methods and apparatus are provided for using tracers to monitor industrial process equipment to which liquid is added and from which liquid is removed. In preferred embodiments, the methods are directed to detecting water leakage in a boiler in which an aqueous temperature control liquid is supplemented with feedwater at a known or unknown rate and is removed as blowdown at a known rate. The methods include determining the blowdown removal rate, adding a tracer to the temperature control liquid at a rate that is directly proportional to the blowdown removal rate, analyzing the blowdown to determine the measured concentration of tracer contained therein, deriving an expected concentration of tracer in the blowdown, and comparing the measured and expected concentrations to detect excessive variance between them.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: October 15, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Eric Thungstrom, Paul R. Burgmayer
  • Patent number: 5562816
    Abstract: A Mannich reaction product of reactants selected from alkylated phenols, a polyamine and an aldehyde is employed to dissolve tar deposits in coke oven piping and transmission lines.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: October 8, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Paul V. Roling
  • Patent number: 5562830
    Abstract: A method of inhibiting corrosion and scale formation and deposition in aqueous systems by adding a combination of a polyepoxysuccinic acid or salts thereof and a phosphonocarboxylic acid or salts thereof.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: October 8, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Davor F. Zidovec, Preetha M. Prabhu
  • 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: 5562862
    Abstract: A stable defoamer composition and method of defoaming an aqueous system is disclosed. The composition comprises an alcohol alkoxylate, at least one surfactant having a melting point less than 20.degree. C., and a low HLB, ethylene oxide/propylene oxide block copolymer, said block copolymer carried in a mixture comprising polybutene.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: October 8, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Charles J. Berzansky, Jr., Duy T. Nguyen
  • Patent number: 5562863
    Abstract: Vinyl aromatic monomer polymerization methods utilizing a composition of 2,6-di-tert-butyl-4-methylphenol and a substituted benzoquinonediimide compound are disclosed. Preferably, the composition is employed in an amount of 1 part to 10,000 parts per million parts monomer during distillation of styrene.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: October 8, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Graciela B. Arhancet
  • Patent number: 5560523
    Abstract: An apparatus for transferring a discrete, measured volume of liquid from a dispensing container to a liquid receptacle. The apparatus is comprised of a conduit having a solenoid valve, a measuring vessel and a pump. The solenoid valve controls fluid flow from a dispensing container to the measuring vessel. The apparatus prevents accidental drainage of the liquid dispensing container by the pump and eliminates personnel hazards associated with manual transfers of liquids from dispensing containers to receptacles.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: October 1, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: John J. Chaki, Marc C. Angelillo, William G. Newsome
  • Patent number: 5556451
    Abstract: Compositions and methods of using the compositions to inhibit oxygen induced corrosion of metal exposed to aqueous solutions are disclosed. The compositions include hydroxybenzoic acid in formulations with imidazoline, heavy aromatic naphtha, polymerized tall oil fatty acid, alkanols, dimer trimer acids, alkanoic acid, alkanediols, and water. The compositions, when added to aqueous solutions, effectively inhibit oxygen induced corrosion of metal.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: September 17, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Ljiljana V. Minevski
  • Patent number: 5556510
    Abstract: A method of inhibiting the deposition of organic contaminants in a pulp and papermaking system comprising adding to the system an effective amount of a detackifying composition comprising a charged polymer and an oppositely charged surfactant, with the proviso that at least the polymer or the surfactant be surface active.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: September 17, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: David D. Dreisbach, Mark E. Laurint, Tien-Feng Ling
  • Patent number: 5545438
    Abstract: A hydrophilic coating for aluminum comprising a substantially chromium-free treatment including phosphoric acid, boric acid and optionally molybdic acid.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: August 13, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, Jeffrey I. Melzer
  • Patent number: 5545347
    Abstract: Compositions and methods for cleaning and etching an aluminum surface with a low etch, low phosphate alkaline cleaner solution are disclosed. The preferred composition employs a stable combination of an alkali metal hydroxide, gluconic acid, a detergent source, an aluminum sequestrant, an oil emulsifier, a defoamer, and a hydrotrope.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: August 13, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, Edward A. Rodzewich, William L. Harpel
  • Patent number: 5541257
    Abstract: A method of enhancing the drainage of residual aqueous rinse from the external surfaces of plastic parts is disclosed. The method employs an aqueous solution of a tannin compound, which when applied to the surface of plastic parts will not rinse off during subsequent rinse stages and will remain on the plastic parts.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: July 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Barry P. Gunagan, Jeffrey I. Melzer
  • Patent number: 5538622
    Abstract: Methods and compositions for inhibiting the polymerization of crude dichlorobutene during its processing are disclosed. The methods comprise adding an effective polymerization inhibiting amount of a composition of a hydroxylamine compound and a metal deactivator compound to the dichlorobutene. The preferred hydroxylamine compound is bis-(2-hydroxypropyl)hydroxylamine and the preferred metal deactivator compound is a Mannich reaction product.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: July 23, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Graciela B. Arhancet
  • Patent number: 5536326
    Abstract: A method for enhancing the dewatering of starch comprising adding to an aqueous starch slurry an effective amount of a composition comprising polybutene and at least one surfactant having a melting point less than 20.degree. C.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: July 16, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: John D. Stocker
  • Patent number: 5531937
    Abstract: Compositions and a method of using the compositions to inhibit corrosion. The compositions are water soluble n-alkyl morpholine, saturated dicarboxylic acid, optionally alkanol amine and optionally surfactant compositions which inhibit ferrous metal corrosion when added to aqueous oxygen-free solutions.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: July 2, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Ljiljana V. Minevski, Edmund J. Bockowski
  • Patent number: 5527468
    Abstract: A treatment for controlling the deposition of scale imparting species on the structural surfaces of steam generating systems, wherein the aqueous medium is maintained at a pH which minimizes magnetite solubility, comprising the use of a combination of an organic amine and a nonionic polymer having the structure: ##STR1## wherein R.sub.1 is H or lower (C.sub.1 -C.sub.4) alkyl, R.sub.2 is (CH.sub.2 --CH.sub.2 --O).sub.n, ##STR2## or a mixture of both, n is an integer of from 1 to about 40, and R.sub.3 is H, lower (C.sub.1 -C.sub.4) alkyl or an acetate.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: June 18, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Scott M. Boyette, Keith A. Bair, Fu Chen