Patents Represented by Attorney Roslyn T. Tobe
  • Patent number: 5254603
    Abstract: A radiation curable coating composition comprising reactive monomers, a photoinitiator, between about 4 wt.% to 35 wt.% of a cellulose derivative, preferably nitrocellulose and an unsaturated polyester resin which is the reaction product of glycols and unsaturated dibasic acids. Coatings prepared in accordance with the present invention can be used as overprint varnishes for magazines and other coated papers. These coatings may also be used to provide a protective finish for wood.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: October 19, 1993
    Assignee: Hercules Incorporated
    Inventor: Steven H. Nahm
  • Patent number: 5171795
    Abstract: A process for the manufacture of improved water soluble polyaminopolyamide-epichlorohydrin resins is disclosed. The polyaminopolyamide-epichlorohydrin reaction is continued until between 70% to 100% of the total charge of epichlorohydrin has reacted. The polyaminopolyamide-epichlorohydrin mixture is then treated with a specified amount of a halogen-free mineral acid. Preferably the mineral acid is selected from the group consisting of sulphuric acid, phosphoric acid, nitric acid and sodium hydrogen sulphate. Following the completion of the acid addition the reaction is continued to effect at least a 10% reduction in the polymer bound organochlorine concentration, based on the composition of the reaction mixture at the time of the acid addition.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: December 15, 1992
    Assignee: Hercules Incorporated
    Inventors: Andrew J. Miller, Brian M. Stubbs
  • Patent number: 5169441
    Abstract: Fillers and pigments, such as clay, titanium dioxide, calcium carbonate, silicas, and silicoaluminates, can be rendered cationic by treating the fillers or pigments with the reaction product of a polyamine or polyamide and epichlorohydrin. The resulting water soluble cationic fillers or pigments are useful in the paper industry as fillers for paper and can also be utilized in coating paper.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: December 8, 1992
    Assignee: Hercules Incorporated
    Inventor: Rodrigue V. Lauzon
  • Patent number: 5019342
    Abstract: The present invention utilizes low volatility amines or alkanol amines to control caustic corrosion which can take place when a boiler system, treated with a coordinated phosphate/pH program, is "out of control".N-substituted hydroxyalkyl piperazines are also capable of mitigating caustic corrosion in coordinated phosphate/pH programs. Combinations of the compounds of the present invention and phosphate have also been shown to be efficacious at mitigating caustic corrosion in coordinated phosphate/pH programs.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: May 28, 1991
    Assignee: Betz Laboratories, Inc.
    Inventors: John A. Muccitelli, Nancy A. Feldman
  • Patent number: 4970239
    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 an alkylthioalkylamine or acid addition salt thereof.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: November 13, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Larry A. Lyons
  • Patent number: 4927519
    Abstract: A method for controlling the formation of fouling deposits in a liquid hydrocarbonaceous medium, wherein in the absence of such fouling inhibition, fouling deposits would normally be formed within said medium is disclosed. The method comprises adding to said medium an antifoulant composition comprising a basic antifouling compound, component (1), selected from the group consisting of alkyl phosphonate phenate sulfide, alkaline earth alkyl phosphonate phenate sulfide, an amine neutralized alkyl phsophonate phenate sulfide, or mixtures thereof, and at least one additional antifouling compound selected from components (2), (3) and (4) wherein component (2) is an effective antioxidant compound adapted to inhibit oxygen based polymerization of said hydrocarbon or petrochemical, component (3) is a corrosion inhibiting compound, and component (4) is a metal deactivator. The process comprises adding from about 0.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: May 22, 1990
    Assignee: Betz Laboratories, Inc.
    Inventor: David R. Forester
  • 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: 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: 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: 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: 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: 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: 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: 4894139
    Abstract: Certain Mannich reaction products formed from the reaction of an alkyl substituted catechol, a polyamine, and an aldehyde are used to deactivate copper metal species contained in hydrocarbon fluids. Left untreated, such copper species lead to decomposition resulting in the formation of gummy, polymer masses in the hydrocarbon liquid.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: January 16, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Paul V. Roling, Dwight K. Reid, Joseph H. Y. Niu
  • Patent number: 4883580
    Abstract: Certain Mannich reaction products (i.e., alkylated phenol, polyoxyalkylenediamine, and an aldehyde) are used to deactivate iron species already present in hydrocarbon fluids. Left untreated, such iron species lead to decomposition resulting in the formation of gummy, polymer masses in the hydrocarbon liquid.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: November 28, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Paul V. Roling, Joseph H. Y. Niu
  • Patent number: 4871424
    Abstract: The invention relates to a process for controlling pitch deposition from pulp in papermaking systems which comprises adding to the pulp an effective amount of a polymer having hydroxyl groups pendant to the backbone of the polymer. The polymer can be polyvinyl alcohol having 50% to 100% hydrolysis. The polymer can also be a water-soluble copolymer having recurring units of nonionic hydrophilic monomers, and/or hydrophobic monomers, wherein the copolymer has at least 20 mol percent of vinyl alcohol. In another aspect, this invention comprises adding to the pulp an effective amount of a water-soluble polymer derived by substituting hydroxyl groups onto a preformed reactive polymer, wherein the water-soluble polymer has at least 20 mol percent of hydroxyl groups.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: October 3, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: David D. Dreisbach, Gilbert S. Gomes
  • 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