Patents Assigned to Betz Laboratories, Inc.
  • Patent number: 5525241
    Abstract: A water treatment system including a tank for containing a solid treatment product such as a solid halogen. The water treatment system is adapted to be used in combination with a cooling system wherein treated water is fed to the cooling system through an outlet conduit leading from the tank. Drainage of water from the tank is facilitated by use of an eductor connected to an inlet conduit for the tank whereby water is drained from the tank to the inlet conduit and back to the outlet conduit, and is thereafter conveyed back to the cooling system. Thus, a closed system is formed by the treatment system in combination with an associated cooling system wherein the closed system is substantially environmentally safe in that drainage of the tank outside of the closed system is avoided.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: June 11, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Steven Clavin, Bradley J. Peters, Henry M. Schrandt
  • Patent number: 5523002
    Abstract: A contaminant precipitating composition and method are disclosed. The composition comprises a water soluble branched polymeric composition 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: February 17, 1995
    Date of Patent: June 4, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: William S. Carey, Ellen M. Meyer, Jeffrey H. Peltier
  • Patent number: 5521814
    Abstract: A process control system uses a performance model, in conjunction with an economic model, to meet either performance or economic objectives. The system operates either automatically, on-line, in "real time" or manually off-line, in "real time" to optimize the process to meet a selected objective. The performance model uses neural networks to determine the interrelationships of each of a set of independent variables (controllable inputs to the process) to each other and their relationship to a set of dependent variables (outputs of the process). The performance model is used to optimize the process to meet performance objectives. The economic model is used in conjunction with the performance model to meet economic objectives.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: May 28, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Conrad K. Teran, Delbert Grotewold
  • Patent number: 5518629
    Abstract: A method of controlling scale formation and deposition and corrosion in aqueous systems is described wherein a treatment solution of a substoichiometric amount of a scale/corrosion inhibitor in combination with a substituted alkylpolycarboxylate is employed. The scale/corrosion inhibitor can be a phosphonate such as hydroxyethylidene diphosphonic acid, 2-phosphonobutane-1,2,4-tricarboxylic acid, hydroxyphosphonoacetic acids, amino phosphonates; terpolymers, copolymers and homopolymers of acrylic acid, maleic acid, epoxysuccinic acids such as polyepoxysuccinic acid or mixtures thereof. The substituted alkylpolycarboxylates are compounds of the general structure: R--X--Y.sub.n wherein R is a hydrocarbon functionality having 4 to 18 carbons; X, when present, is --NH--, --NY.sup.1 --, --N-->O, --N--OC--Y.sup.1, --O-- or --S--; n is greater than or equal to 1; and Y and Y.sup.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Libardo A. Perez, William S. Carey, Donald T. Freese, Judith B. Rockett
  • Patent number: 5518640
    Abstract: An emulsion cleaner formulation is provided which is free of toxic or hazardous materials listed under SARA 313. The emulsion cleaner formulation employs a blend of triethanolamine soap of tall oil fatty acid, polyethylene glycol (400) dioleate and polyethylene glycol (400) monooleate as a stabilizing agent. The emulsion cleaner may also include a nonionic surfactant. The emulsion cleaner also includes both oil soluble and water soluble rust inhibitors.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Edward A. Rodzewich
  • Patent number: 5518555
    Abstract: A heavy metal and fluoride free pretreatment for a metal surface which enhances corrosion resistance and surface adhesion properties is described. The pretreatment is an aqueous solution of an anionic polyacrylamide which can be rinsed or dried in place.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, William L. Harpel
  • Patent number: 5518770
    Abstract: Methods and compositions for pretreating a metal surface are provided. The methods comprise applying to the metal surface a hydrolysate of a copolymer of an unsaturated carboxylic acid or derivative thereof and a vinyltrialkoxysilane compound. Novel zinc salt hydrolysate compositions and zirconium salt hydrolysate compositions are also disclosed.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Alan E. Goliaszewski, David W. Reichgott, Lothar S. Sander
  • Patent number: 5518636
    Abstract: The present invention is directed to a method of detoxifying water containing quaternary ammonium compounds to the extent that aquatic life such as fish and macroinvertebrates are protected. The method comprises adding to an aqueous system including a quaternary ammonium compound a sufficient quantity of a de-oiled lecithin. De-oiled lecithin is a mixture of phosphatides with about 2% or less residual oil.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Joseph C. Petrille, III, Michael W. Werner
  • Patent number: 5519102
    Abstract: A method of preparing poly(isopropenylphosphonic acid) is disclosed, which provides a high yield with low initiator charge. The method comprises preparing poly(isopropenylphosphonic acid) by polymerizing a mixture of isopropenylphosphonic acid and isopropenylphosphonic acid anhydride, preferably in an aqueous solution.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Michael A. Cady, William S. Carey, Andrew Solov
  • Patent number: 5518630
    Abstract: A method and composition for controlling the formation and deposition of scale imparting compounds in an aqueous system is disclosed. A treatment comprising a sulfonated polymer and a polymaleic acid is effective in controlling the formation and deposition of such compounds.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald T. Freese, Libardo A. Perez
  • Patent number: 5512636
    Abstract: Agglomerating agent and method for use in heap leaching of mineral bearing ores. Cationic polymers alone or in combination with cement or lime are highly effective agglomerating agents in acidic or alkaline leaching operations. The cationic polymers are preferably graft copolymers, block copolymers or linear copolymers of acrylamide and diallyl dimethyl ammonium chloride.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: David M. Polizzotti, Wen P. Liao, Donald C. Roe
  • Patent number: 5512212
    Abstract: A composition and method for inhibiting corrosion of iron and iron-containing metals in contact with aqueous systems containing sulfide compounds. The composition comprises (A) an aqueous solution of an alcohol, an acid, a fatty imidazoline, and an ethoxylated fatty diamine, and (B) an aqueous solution of a molybdate compound or salt thereof.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Michael Brown, James R. Ohlsen, Richard D. McBride
  • Patent number: 5512213
    Abstract: A treatment for stabilizing an isothiazolone compound comprising adding to the compound a stabilizing amount of a metal salt, wherein the cation of the metal salt is an alkali metal, and the anion is selected from the group consisting of acetate, citrate, phosphate and borate.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Donald J. Paterson
  • Patent number: 5512243
    Abstract: An oxygen scavenger for aqueous mediums is disclosed. The oxygen scavengers comprise cyclohexanediones which, when added to basic aqueous solutions, effectively scavenge oxygen from the aqueous solutions. The oxygen scavenger has particular utility as an oxygen scavenger from water in heating systems such as boilers and heat exchangers.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Paul V. Roling
  • Patent number: 5512186
    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: April 28, 1995
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Barry Wright, Daniel L. Michalopoulos
  • Patent number: 5512183
    Abstract: A water soluble isopropenylphosphonic acid copolymer composition and method of use thereof are disclosed. The copolymer comprises repeat units (a) of the formula: ##STR1## wherein X=OH or OM, wherein M is a cation, and repeat units (b) of the formula: ##STR2## wherein R.sub.1 and R.sub.2 are independently hydrogen, C.sub.1-10 linear or branched alkyl, phenyl or alkyl substituted phenyl. The copolymers are effective in inhibiting the precipitation of scale forming salts and also act to inhibit corrosion in boiler water systems.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Scott M. Boyette, Alan E. Goliaszewski
  • Patent number: 5510547
    Abstract: Methods for inhibiting the polymerization of vinyl aromatic monomers in oxygen-free processing systems are disclosed. The methods comprise adding from 1 to 10,000 parts of a combination of a hydroxylamine compound and a phenylenediamine compound to the vinyl aromatic monomer.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: April 23, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Graciela B. Arhancet, Inge K. Henrici
  • Patent number: 5505792
    Abstract: A method of providing color to a polyacrylamide based, dried-in-place, non-chromate conversion coating is provided. The addition of a phthalo green pigment and optionally a nonionic surfactant to an aqueous, dried-in-place conversion coating treatment solution provides for a colored conversion coating without adversely affecting the corrosion resistance or adhesion properties of the conversion coating.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: April 9, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, Philip D. Deck, William L. Harpel, Bruce V. Haberle
  • Patent number: 5500213
    Abstract: A biocidal composition and method for inhibiting and controlling the growth of microorganisms are disclosed. The composition comprises an amount, effective for the intended purpose, of polyethylene glycols and bis(trichloro methyl) sulfone, in combination with additional biocidal components, the composition in a gel form. The method comprises administering an amount of the gelled composition to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: March 19, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, David M. Polizzotti
  • Patent number: 5500220
    Abstract: A foam carrier for a dust control agent and a biological control agent is provided to control fugitive dust dissemination and biological activity in bulk/granular solids.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: March 19, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, Dwight P. Davis, Kevin C. Manning, Edmund J. Bockowski