Biocidal Patents (Class 162/161)
  • Patent number: 5063218
    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 n-tributyl tetradecyl phosphonium chloride (TPC) and trichloro-s-triazine trione. 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: August 13, 1990
    Date of Patent: November 5, 1991
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 5063213
    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 n-tributyl tetradecyl phosphonium chloride (TPC) and bromochlorohydantoin. 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: August 13, 1990
    Date of Patent: November 5, 1991
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 5063217
    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 "Belclene 350" and a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one ("Kathon 886F"). The active biocidal component of the "Belclene 350" product is tri n-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: August 13, 1990
    Date of Patent: November 5, 1991
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 5045104
    Abstract: A synergistic mixture of 2-(2 bromo-2-nitroethenyl)furan and 2-bromo-2-nitropropane-1,3-diol is disclosed. The synergistic mixture can be used as an antimicrobial in a broad spectrum of uses; the synergistic mixture is effective against bacteria, algae and fungi. An antimicrobial composition comprising the synergistic mixture and a carrier is also disclosed.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: September 3, 1991
    Assignee: Great Lakes Chemical Corporation
    Inventor: William F. McCoy
  • Patent number: 5041463
    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 glutaraldehyde and dodecylguanidine hydrochloride. 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: August 13, 1990
    Date of Patent: August 20, 1991
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, John T. Conlan
  • Patent number: 5039708
    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 glutaraldehyde and bis(trichloromethyl) sulfone. 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: August 13, 1990
    Date of Patent: August 13, 1991
    Assignee: Betz Laboratories, Inc.
    Inventors: John T. Conlan, Wilson K. Whitekettle
  • Patent number: 5026723
    Abstract: A microbicidal/microbistatic synergistic composition for industrial use comprising a specific nitrobromopropane derivative and 4,5-dichloro-1,2-dithiol-3-one and an industrial method of killing or inhibiting the growth of microorganisms using the same compounds, which are useful of microbicidal/microbistatic treatment in various industrial media.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: June 25, 1991
    Assignee: Katayama Chemical, Inc.
    Inventors: Sakae Katayama, Yosuke Ito, Hidenori Hirashima
  • Patent number: 5015660
    Abstract: A microbicidal/microbistatic composition for industrial use which contains 4,5-dichloro-1,2-dithiol-3-one and bromonitrostyrene and a method of killing or inhibiting the growth of microorganisms or controlling slime formation using the composition.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: May 14, 1991
    Assignee: Yoshitami Pharmaceutical Industries, Ltd.
    Inventors: Yasuhiro Hidaka, Toshio Sato, Masanobu Takahashi
  • Patent number: 5010066
    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 n-tributyl tetradecyl phosphonium chloride (TPC) and n-dodecylquanidine or a 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: August 13, 1990
    Date of Patent: April 23, 1991
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 5008023
    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 glutaraldehyde and 2-(decylthio) ethanamine (DTEA). 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: August 13, 1990
    Date of Patent: April 16, 1991
    Assignee: Betz Laboratories, Inc.
    Inventors: John T. Conlan, Wilson K. Whitekettle
  • Patent number: 4975109
    Abstract: The present invention is directed to microbiocidal combinations and processes for inhibiting the growth of microorganisms. The novel combinations and processes of the present invention show unexpected activity against microorganisms, including bacteria, fungi and algae. Specifically, the combinations of materials which are to be added to a system at the time of their use comprise (i) an oxidant such as potassium monopersulfate, sodium perborate, hydrogen peroxide or sodium percarbonate, (ii) a microbiocide such as 2,2-dibromo-3-nitrilopropionamide, methylene bis thiocyanate, 5-chloro-2-methyl-4-isothiazolin-3-one/2-methyl-4-isothiazolin-3-one, tetrahydro-3,5-dimethyl-2H,1,3,5-thiadiazine-2-thione, and sodium dimethyldithiocarbamate/disodium ethylene bis dithiocarbamate and optionally (iii) a surfactant such as a fluorinated surfactant, and (iv) an anti-corrosive material such as an anhydrous phosphate, or combinations thereof.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: December 4, 1990
    Assignee: Lester Technologies Corp.
    Inventors: Lester A. Friedman, Jr., Richard F. McFarlin
  • Patent number: 4966775
    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-bromo-2-nitropropane-l, 3-diol and an oxidizing biocide selected from the group consisting of hypochlorite, chlorine, and chlorine dioxide. 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 19, 1989
    Date of Patent: October 30, 1990
    Assignee: Betz Laboratories
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4966716
    Abstract: A method of controlling biofouling in a aqueous systems comprising introducing into the system a biocidally effective amount of a water soluble perhalide of the formula: ##STR1## where R.sub.1 and R.sub.2 are hydrogen, hydroxyethyl, alkyl, cyclic alkyl, (alpha, omega)-alkyl, alkyl ether, polyether, heterocyclic ring-substituted alkyl, and halogenated alkyl; n is 2 to 6: X is chlorine, bromine or iodine; and only one of R.sub.1 and R.sub.2 may be hydrogen.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: October 30, 1990
    Assignee: Great Lakes Chemical Corporation
    Inventors: Nicolai A. Favstritsky, Arthur J. Hein, Glade E. Squires
  • Patent number: 4964952
    Abstract: A method of controlling pitch in an aqueous system involved in paper making as described which comprises adding a cationically modified tannin to the system.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: October 23, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: John J. Bennison, Richard P. Clifford
  • Patent number: 4936994
    Abstract: A method of attacking and removing microbial slime in slime covered surfaces and maintaining a slime-free surface as in exposed cooling tower surfaces and in waste water treatment and paper making. This method comprises utilizing an enzyme blend in 2 to 100 parts per million (ppm) of cellulase, alpha-amylase and protease. Such enzyme blends have been found specifically to digest microbial slime and reduce microbial attachment and biofilm. A specific combination of polysaccharide degrading enzymes is a ratio of 2 parts cellulase to 1 alpha-amylase to 1 protease utilized in 2-100 parts per million. Broadly, the alpha-amylase must be at least 1 and the protease may vary from 0.5 to 1 part.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: June 26, 1990
    Assignee: Nalco Chemical Company
    Inventor: Christopher L. Wiatr
  • Patent number: 4935153
    Abstract: A method of controlling biofouling in an aqueous system comprising introducing into the system a biocidally effective amount of a water soluble perhalide of the formula: ##STR1## where R.sub.1 and R.sub.2 are hydrogen, hydroxyethyl, alkyl, cyclic alkyl, (alpha, omega)-alkyl, alkyl ether, polyether, heterocyclic ring-substituted alkyl, and halogenated alkyl; n is 2 to 6: X is chlorine, bromine or iodine; and only one of R.sub.1 and R.sub.2 may be hydrogen.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: June 19, 1990
    Assignee: Great Lakes Chemical Corporation
    Inventors: Nicoloi A. Favstritsky, Arthur J. Hein, Glade E. Squires
  • Patent number: 4929498
    Abstract: Discolsed are wet wiper products that incorporate antimicrobially-active nonwoven fabrics, preferably comprising: bonded fibers; a binder distributed on said fibers; and an antimicrobial agent distributed on from 10% through 50% of said fibers, said antimicrobial agent being substantive to said fibers such that said antimicrobial agent is prevented from substantially diffusing from said fabric.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: May 29, 1990
    Assignee: James River Corporation of Virginia
    Inventors: Stuart P. Suskind, Joseph H. Miller
  • 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: 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: 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: 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: 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: 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: 4911789
    Abstract: The invention relates to a glass microfibre based paper, the said fibres being obtained by centrifugal processing of molten glass which is drawn by an annular gas flow at elevated temperature and velocity, which passes along the peripheral wall of the centrifuge. The centrifuge rotates at a peripheral velocity of between 50 and 20 m/sec. and the quantity of glass drawn is less than 6 tons per day and per meter of centrifuge periphery in the case of microfibres of 2 to 3 microns and less than 1 ton per day and per meter of centrifuge periphery in the case of microfibres of less than 1 micron.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: March 27, 1990
    Assignee: Orgel
    Inventors: Jean-Baptiste Rieunier, Marcel Fontar, Patrick B. Le Breton
  • Patent number: 4879306
    Abstract: A composition killing or inhibiting the growth of microorganisms is described and which contains a mixture of 4,5-dichloro-1,2-dithiol-3-one and dibromonitrilopropionamide. The combination leads to a marked synergistic action of the two active substance components in the control of microorganisms. The composition is suitable for use in a large number of industrial systems.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: November 7, 1989
    Assignee: Grace Service Chemicals GmbH
    Inventors: Wolf-Dieter Henkels, Marion Balzer
  • Patent number: 4863616
    Abstract: A method of treating an aqueous or non-aqueous system, including paints and adhesives, is described which comprises adding to the system a thiolan of the formula: ##STR1## wherein each of X and Y, which may be the same or different, represents fluorine, chlorine or bromine, in combination with an alkylene bisthiocyanate and a 2-N-alkyl-4-isothiazolin-3-one.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: September 5, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Douglas Clarkson, Richard P. Clifford, Alan Marshall
  • Patent number: 4863960
    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-bromo-2-nitropropane-1, 3-diol ("BNPD") and methyl sulfonyl acrylonitrile ("MSA"). 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: September 12, 1988
    Date of Patent: September 5, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4859702
    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-bromo-2-nitropropane-1,3-diol ("BNPD") and paratolyl sulfonyl acrylonitrile ("PSA"). 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: September 12, 1988
    Date of Patent: August 22, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 4859708
    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-bromo-2-nitropropane-1,3-diol ("BNPD") and beta-bromo-beta-nitrostyrene ("BNS"). 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: September 12, 1988
    Date of Patent: August 22, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4859705
    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-bromo-2-nitropropane 1,3-diol ("BNPD") and N, N-dimethyl-N.sup.1 -phenyl-N.sup.1 -(fluorodichloromethylthio)-sulphamide ("DPFS"). 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: September 12, 1988
    Date of Patent: August 22, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4857557
    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-bromo-2-nitropropane 1, 3-diol ("BNPD") and bis(trichloromethyl)sulfone ("BTCMS"). 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: September 12, 1988
    Date of Patent: August 15, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4855296
    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-bromo-2-nitropropane-1, 3-diol (BNPD) and an oxidizing biocide. 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: September 12, 1988
    Date of Patent: August 8, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4847002
    Abstract: A wood preservative solution comprising water, hexavalent chromium, copper and arsenic can be stabilized against precipitation by the addition of fluorine ion, thereby enhancing the useful life and safety of the solution. Fluoride salts like cerium fluoride, sodium fluoride and calcium fluoride are suitable sources for fluorine ion in such a solution. Wood treated with the preservative solution displays increased penetration, distribution and retention of chromium, copper and arsenic.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: July 11, 1989
    Assignee: Bell Canada
    Inventors: William P. Trumble, Cheryl M. Maritan
  • Patent number: 4835143
    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 n-alkyl dimethyl benzyl ammonium chloride and tetraalkyl phosphonium halide. 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: September 12, 1988
    Date of Patent: May 30, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4835144
    Abstract: A bactericidal composition and method for inhibiting and controlling the growth of the capsulated, faculative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of methylene bis(thiocyanate) and a tetraalkyl phosphonium halide compound. 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: September 12, 1988
    Date of Patent: May 30, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 4830657
    Abstract: Synergistic antimicrobial combination comprising 2-bromo-2-bromomethylglutaronitrile of Formula I: ##STR1## and a 1,2-benzisothiazolin-3-one of Formula II: ##STR2## where R is hydrogen or C.sub.1-4 alkyl; and R.sup.1 is hydrogen, chloro, or methyl.
    Type: Grant
    Filed: June 21, 1982
    Date of Patent: May 16, 1989
    Assignee: Calgon Corporation
    Inventors: John A. Jakubowski, Joseph Gyuris
  • Patent number: 4818413
    Abstract: The copper corrosion rate is minimized to a certain discharge limit by providing a chlorine-bromide treatment in which the chemical feed rate of bromide is increased to an amount required to decrease the copper corrosion rate to the rate required to meet the discharge limit. The inventors made the unexpected and surprising discovery that an increase in the chemical feed rate of bromide--even when the chlorine feed rate is constant--has the effect of reducing copper corrosion. Therefore, this effect is useful for adjusting the copper corrosion rate to an optimum rate to most economically achieve a certain discharge limit.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: April 4, 1989
    Assignee: Nalco Chemical Company
    Inventors: Richard L. Hoover, Mark A. Bush
  • Patent number: 4800082
    Abstract: A solid antimicrobial composition of a halogenated amide such as 2,2-dibromo-3-nitrilopropionamide and a suitable hydrophilic polymer such as hydroxypropyl methyl cellulose with the optional presence of a compression agent and a mold release agent. The invention is also directed to a method for biological control in an aqueous industrial system by contacting the system with the antimicrobial composition.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: January 24, 1989
    Assignee: The Dow Chemical Company
    Inventors: Robert J. Karbowski, Anita S. Erickson, Charles D. Gartner, Kathleen A. Roy
  • Patent number: 4767542
    Abstract: N-chloro and N-bromo derivatives of 2-imidazolidinones having substituents at the 4 and 5 positions of the ring are described. More particularly, there are described dichloro, dibromo-, and chlorobromo- derivatives of 2-imidazolidinones having at least three substituents selected from alkyl, alkoxy, hydroxy and substituted phenyl, e.g., para-substituted phenyl, at the 4 and 5 positions on the ring. These N-halo compounds are biocides, e.g., bactericides, and are useful as disinfectants and sanitizers.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: August 30, 1988
    Assignee: PPG Industries, Inc.
    Inventor: Shelby D. Worley
  • Patent number: 4761427
    Abstract: Aqueous antimicrobial compositions in which dibromonitrilopropionamide is the active ingredient contain from 1% to the solubility limit of dibromonitrilopropionamide, from 5% to the solubility limit of water and a balance of up to 100% of a propylene glycol (all percentages being by weight). Tests on stability carried out on the aqueous antimicrobial compositions show that the rates of decomposition are completely satisfactory compared with the rates of decomposition of known compositions.
    Type: Grant
    Filed: December 6, 1985
    Date of Patent: August 2, 1988
    Assignee: Bromine Compounds Ltd.
    Inventors: Jeane Segall, Leonard M. Shorr
  • Patent number: 4753961
    Abstract: 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-bromo-2-nitropropane-1,3-diol (BNPD) and a trialkyl sulfonium salt, such as tetradecyl dimethyl sulfonium methosulfate (TDSM). The method comprises administering between about 0.1 to about 200 parts of this composition (i.e., BNPD and TDSM) (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: June 28, 1988
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4745132
    Abstract: 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 n-alkyl dimethyl benzyl ammonium chloride 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: July 31, 1986
    Date of Patent: May 17, 1988
    Assignee: Betz Laboratories, Inc.
    Inventors: Paul Swered, Deborah K. Donofrio
  • Patent number: 4732913
    Abstract: 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-bromo-2-nitropropane-1,3-diol 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: February 25, 1987
    Date of Patent: March 22, 1988
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4732911
    Abstract: 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-bromo-2-nitropropane-1,3-diol and bis (tri n-butyl tin) oxide. 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: March 13, 1987
    Date of Patent: March 22, 1988
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 4732905
    Abstract: 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-bromo-2-nitropropane-1,3-diol (BNPD) and "Kathon 886F." The active biocidal components of the "Kathon 886F" product are: 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one. The method comprises administering between about 0.1 to about 200 parts of this composition (i.e., BNPD and "Kathon 886F" product) (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: March 22, 1988
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Patent number: 4725624
    Abstract: 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 n-alkyl dimethyl benzyl ammonium chloride 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: March 13, 1987
    Date of Patent: February 16, 1988
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 4725623
    Abstract: 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-bromo-2-nitropropane-1,3-diol 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 of which treatment is desired.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: February 16, 1988
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Patent number: 4725587
    Abstract: 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-bromo-2-nitropropane-1,3-diol (BNPD) and "Belclene 350." The active biocidal component of the "Belclene 350" product is tri n-butyl tetradecyl phosphonium chloride. The method comprises administering between about 0.1 to about 200 parts of this composition (i.e., BNPD and "Belclene 350" product) (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: February 16, 1988
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio