Patents Assigned to Betz Laboratories, Inc.
  • Patent number: 4916164
    Abstract: A bactericidal composition and method for inhibiting and controlling the growth of the capsulated, facultative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of 2-(decylthio)ethanamine hydrochloride and B-bromo-B-nitrostyrene. The method comprises administering between about 0.1 to about 200 parts of this combined treatment (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 10, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 4916159
    Abstract: A bactericidal composition and method for inhibiting and controlling the growth of the capsulated, facultative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of 2-(decylthio)ethanamine hydrochloride and 2,2-dibromo-3-nitrilo propionamide. The method comprises administering between about 0.1 to about 200 parts of this combined treatment (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 10, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 4916123
    Abstract: A bactericidal composition and method for inhibiting and controlling the growth of the capsulated, facultative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of 2-(decylthio)ethanamine hydrochloride and N-tri butyl tetradecyl phosphonium chloride. The method comprises administering between about 0.1 to about 200 parts of this combined treatment (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 10, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4916158
    Abstract: A bactericidal composition and method for inhibiting and controlling the growth of the capsulated, facultative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of 2-(decylthio)ethanamine hydrochloride and methylene bis(thiocyanate). The method comprises administering between about 0.1 to about 200 parts of this combined treatement (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 10, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 4913880
    Abstract: This invention relates to novel polymeric compositions which are useful for water treatment. These novel compositions are comprised of polymers of .alpha., .beta. ethylenically unsaturated monomer(s), preferably containing carboxylic acid or carboxylic amide functionalities, and amine-containing allyl ether monomers.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: April 3, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, William S. Carey
  • Patent number: 4914118
    Abstract: A bactericidal composition and method for inhibiting and controlling the growth of the capsulated, facultative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of 2-(decylthio) ethanamine hydrochloride and a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one ("Kathon 886F"). The method comprises administering between about 0.1 to about 200 parts of this combined treatment (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 3, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4914130
    Abstract: A bactericidal composition and method for inhibiting and controlling the growth of the capsulated, facultative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of 2-(decylthio)ethanamine hydrochloride and n-dodecylguanidine or water soluble salt thereof. The method comprises administering between about 0.1 to about 200 parts of this combined treatment (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 3, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4914132
    Abstract: A bactericidal composition and method for inhibiting and controlling the growth of the capsulated, facultative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of 2-(decylthio)ethanamine hydrochloride and n-alkyl dimethyl benzyl ammonium chloride. The method comprises administering between about 0.1 to about 200 parts of this combined treatment (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 3, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4913801
    Abstract: The present invention is directed to a method of using cerium and/or cerium contaning compounds to passivate nickel contaminants in hydrocarbon feedstocks which are used in catalytic cracking processes.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: April 3, 1990
    Assignee: Betz Laboratories, Inc.
    Inventor: David R. Forester
  • Patent number: 4914134
    Abstract: A bactericidal composition and method for inhibiting and controlling the growth of the capsulated, facultative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of 2-(decylthio)-ethanamine hydrochloride and 2-bromo-2-nitropropane-1,3-diol. The method comprises administering between about 0.1 to about 200 parts of this combined treatment (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 3, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4913822
    Abstract: A method for inhibiting scale deposition and the corrosion of metal surfaces in a cooling water system.It comprises a water soluble copolymer consisting of moities of acrylic acid and monohydroxylated alkyl allyl ether, a phosphonate compound, a water soluble zinc salt and, optionally, an azole compound, and/or a water soluble molybdate salt.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: April 3, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, J. Michael Brown
  • Patent number: 4906385
    Abstract: A method of controlling the fouling potential of macroinvertebrates, such as mollusks, in aqueous systems which comprises adding to the system an effective controlling amount of a water-soluble alkyl guanidine salt wherein the alkyl group has from about 8 to about 18 carbons.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: March 6, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Larry A. Lyons, Dwight P. Davis, Paul Swered
  • Patent number: 4905721
    Abstract: A method for monitoring and controlling the blowdown rate and chemical feed rate to a high pressure boiler involving the measurement of certain parameters including operating temperature, conductivity at operating temperature, temperature and pH of cooled boiler water, and then carrying out calculations to determine the estimated treatment chemical concentration and estimated boiler water conductivity, noting the critical conductivity ratio (CCR), noting the observed maximum tolerable high temperature conductivity value and comparing the relative conductivity ratio (RCR) with the critical conductivity ratio (CCR) and the value of the electrolytic conductivity of the boiler water at operating temperature (K) with the maximum tolerable high temperature conductivity value (M), followed by making any necessary adjustments to the chemical feedrate and diagonal or blowdown rate depending upon aforesaid comparison.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: March 6, 1990
    Assignee: Betz Laboratories, Inc.
    Inventor: John A. Muccitelli
  • Patent number: 4906383
    Abstract: This invention relates to novel polymeric compositions which are useful for water treatment. These novel compositions are comprised of polymers of .alpha., .beta. ethylenically unsaturated monomer(s), preferably containing carboxylic acid or carboxylic amide functionalities, and amine-containing allyl ether monomers.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: March 6, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, William S. Carey
  • Patent number: 4900451
    Abstract: A method of inhibiting manganese deposition in open, recirculating aqueous systems is disclosed. A water soluble acrylic acid/allyl hydroxy propyl sulfonate ether copolymer having repeat units characterized by the structural formula: ##STR1## wherein M is a water soluble cation, the molar ratio x:y is from about 3:1 to about 6:1 and the number average molecular weight of the copolymer is from about 5,000 to about 10,000, preferrably with an organic phosphonate is added to the aqueous system. The organic phosphonate is preferably hydroxy ethylidene diphosphonic acid, diethylene triamine penta-(methylene phosphonic acid) or blends thereof. The copolymer or copolymer and phosphonic acid is effective in inhibiting the deposition of manganese in aqueous systems.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: February 13, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Brown J. Michael, Stevn P. Sherwood, E. Paul Holder
  • Patent number: 4898684
    Abstract: This invention relates to novel polymeric compositions which are useful for water treatment. These novel compositions are comprised of polymers of .alpha.,.beta. ethylenically unsaturated monomer(s), preferably containing carboxylic acid or carboxylic amide functionalities, and amine-containing allyl ether monomers.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: February 6, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, William S. Carey
  • Patent number: 4897218
    Abstract: A method of suppressing dust generation emanating from cement clinker by applying a foamed water/surfactant solution thereto. The solution comprises a low salt tolerant anionic surfactant.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: January 30, 1990
    Assignee: Betz Laboratories, Inc.
    Inventor: Donald C. Roe
  • Patent number: 4897797
    Abstract: In a treatment system for feeding a liquid from a tank having an outlet by a controllable pump operated cyclically, an automatic calibration/measuring system. The system is arranged for determining the volume of liquid pumped each cycle of operation by the pump and comprises a hollow sight glass having first and second sensors coupled thereto. The sight glass is in fluid communication with the tank. The first sensor is arranged to provide a first signal when the level of liquid in the container reaches it while the second sensor, which is located below the first sensor, provides a second signal when the level of liquid in the container reaches it. The container defines a predetermined volume between the first and second sensors. The system also includes a controller to determine the actual number of cycles of operation of the pump required to pump the predetermined volume and if that number has deviated from a preestablished number. If so, the pump is controlled in response to the detected deviation.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: January 30, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Jerome J. Free, Jr., James C. Rodgers, Davie B. Lawhon
  • Patent number: 4895664
    Abstract: A water soluble polymer composition is disclosed. The polymer has repeat units characterized by the structural formulae: ##STR1## wherein R.sub.1 is H or lower alkyl (C.sub.1 -C.sub.3); R.sub.2 is OH, OM, or NH.sub.2 ; M is a water soluble cation; R.sub.3 is a hydroxy substituted alkyl or alkylene radical having from 1 to about 6 carbon atoms or a non-substituted alkyl or alkylene radical having from 1 to 6 carbon atoms; X is an anionic radical; Z is H or hydrogens or a water soluble cation or cations which together counterbalance the valence of X, and a is 0 or 1. The copolymer is effective in inhibiting the precipitation of certain scale forming salts, and also acts to inhibit corrosion of metal parts in contact with water systems.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: January 23, 1990
    Assignee: Betz Laboratories, Inc.
    Inventor: Fu Chen
  • Patent number: 4895663
    Abstract: A water soluble polymer composition is disclosed. The polymer has repeat units characterized by the structural formulae: ##STR1## wherein R.sub.1 is H or lower alkyl (C.sub.1 --C.sub.3); R.sub.2 OH, OM, or NH.sub.2 ; M is a water soluble cation; R.sub.3 is a hydroxy substituted alkyl or alkylene radical having from 1 to about 6 carbon atoms or a non-substituted alkyl or alkylene radical having from 1 to 6 carbon atoms; X is an anionic radical; Z is H or hydrogens or a water soluble cation or cations which together counterbalance the valence of X, and a is 0 or 1. The copolymer is effective in inhibiting the precipitation of certain scale forming salts, and also acts to inhibit corrosion of metal parts in contact with water systems.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: January 23, 1990
    Assignee: Betz Laboratories, Inc.
    Inventor: Fu Chen