Patents Assigned to Betz Laboratories, Inc.
  • Method and composition for treatment of aluminum
    Patent number: 5292379
    Abstract: Methods of forming a dried in place conversion coating on metal surfaces such as aluminum and aluminum alloys. The methods comprise contacting the metal with an aqueous solution of a water soluble maleic or acrylic acid/allyl ether copolymer alone or with an acid.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: March 8, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: David W. Reichgott, Fu Chen
  • Quaternized polyvinylamine water clarification agents
    Patent number: 5292441
    Abstract: The use of quaternized polyvinylamines for use in water clarification is disclosed.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: March 8, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Jen-Chi Chen, Stephen R. Vasconcellos, Gerald C. Walterick, Jr., Fu Chen
  • Corrosion inhibition of calcium chloride brine
    Patent number: 5292455
    Abstract: A method of inhibiting corrosion of metals such as low carbon steel in contact with calcium chloride brine comprising adding to the brine or to the salt prior to dissolution 2-hydroxyphosphono-acetic acid.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: March 8, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Suzanne M. Zefferi, Roger C. May
  • Dewatering gluten with nonionic surfactants
    Patent number: 5283322
    Abstract: Methods of enhancing the dewatering of gluten are disclosed. The methods comprise adding a nonionic surfactant to the wet gluten prior to dewatering, as in vacuum dewatering equipment. Particularly effective surfactants are oxyalkylated sorbiton R surfactants when R is monooleate, trioleate, monostearate, tristearate, monopalmitate and monolaurate.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: February 1, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Roy W. Martin, Robert J. Denton
  • Method for the extraction of iron from liquid hydrocarbons
    Patent number: 5282959
    Abstract: A method of extracting iron species from a liquid hydrocarbon medium comprising adding to the medium a composition comprised of an aminocarboxylic acid, methoxypropylamine and a solvent selected from the group consisting of 2-ethylhexanol, cresylic acid, ethylene glycol and hexylene glycol.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: February 1, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Paul V. Roling, Cato R. McDaniel
  • Method and composition for treatment of galvanized steel
    Patent number: 5282905
    Abstract: Methods of forming a conversion coating on metal surfaces such as galvanized steel are provided. The methods comprise reacting the metal surface with an aqueous solution of a water soluble polyacrylic acid or homopolymer thereof, maleic or acrylic acid/allyl ether copolymer alone or with an acid.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: February 1, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: David W. Reichgott, Fu Chen
  • Methods for inhibiting polymerization of hydrocarbons utilizing a hydroxyalkylhydroxylamine
    Patent number: 5282957
    Abstract: The present invention pertains to methods and compositions for inhibiting polymerization of hydrocarbons during processing and storage. The methods comprise adding an effective amount of a hydroxyalkylhydroxylamine compound to the hydrocarbon sought to be treated.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: February 1, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Bruce E. Wright, Carl E. Weaver, Dwight K. Reid
  • Neutralizing amines with low salt precipitation potential
    Patent number: 5283006
    Abstract: A method for neutralizing acidic species and inhibiting the deposition of amine acid salts on the internal surfaces of elevated temperature processing units in a petroleum refinery comprising adding to the hydrocarbon liquid being processed therein a tertiary amine, including trimethylamine and triethylamine.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: February 1, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Scott E. Lehrer, James G. Edmondson
  • Method for the inhibition and removal of ammonium chloride deposition in hydrocarbon processing units
    Patent number: 5282956
    Abstract: A method for the inhibition and removal Of ammonium chloride deposition in hydrocarbon processing units comprising adding to the hydrocarbon liquid an amide selected from the group consisting of dimethylformamide and 1,3-dimethyl-2-thiourea.
    Type: Grant
    Filed: July 7, 1992
    Date of Patent: February 1, 1994
    Assignee: Betz Laboratories, Inc.
    Inventor: Carl E. Weaver
  • Lubricating metal cleaner additive
    Patent number: 5282992
    Abstract: An additive for a single stage aqueous alkaline cleaning composition for metal surfaces which imparts improved lubricity to the metal surfaces being treated. The additive is a fatty amine, preferably an ethoxylated fatty diamine.
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: February 1, 1994
    Assignee: Betz Laboratories, Inc.
    Inventor: David W. Reichgott
  • Chemically stable antimicrobial formulations of dimps
    Patent number: 5283264
    Abstract: An antimicrobial composition and method for producing a stable, antimicrobial formulation of diiodomethyl-p-tolylsulfone is disclosed.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: February 1, 1994
    Assignee: Betz Laboratories, Inc.
    Inventor: Deborah K. Donofrio
  • Method and composition for controlling the growth of microorganisms
    Patent number: 5278188
    Abstract: A microbial inhibiting composition and method is disclosed. The composition comprises an amount, effective for the intended purpose of decylthioethanamine hydrochloride and 2-(2-bromo-2-nitroethenyl) furan. The method comprises administering an amount of this combined treatment to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: January 11, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Deborah K. Donofrio
  • Compositions for extracting iron species from liquid hydrocarbon systems
    Patent number: 5271863
    Abstract: Compositions and methods of extracting soluble iron species, such as iron naphthenate, from a liquid hydrocarbon, such as crude oil are disclosed. A Mannich reaction product is added to the liquid hydrocarbon and mixed therewith. Then, wash water is added to form a water-in-oil emulsion. The emulsion is resolved, with the iron laden aqueous phase being separated.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: December 21, 1993
    Assignee: Betz Laboratories, Inc.
    Inventor: Paul V. Roling
  • Methods for controlling dust in high temperature systems
    Patent number: 5271859
    Abstract: Method for inhibiting dust emissions from hot (250.degree. F.) solids are provided for. The method comprises adding to the solids an aqueous solution or foamed solution of a cellulose derivative compound.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: December 21, 1993
    Assignee: Betz Laboratories, Inc.
    Inventor: Donald C. Roe
  • Polymers for the treatment of boiler water
    Patent number: 5271847
    Abstract: A method for controlling the deposition of silica on the structural surfaces of steam generating systems comprising the use of a water soluble polymer having the structure ##STR1## wherein E is the repeat unit remaining after polymerization of an alpha, beta ethylenically unsaturated compound.This polymer may also be used in concert with topping agents such as phosphoric acids, phosphonic acids, polyvalent metal salts, metal chelating agents and oxygen scavengers.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: December 21, 1993
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, Scott M. Boyette, Keith A. Bair
  • Method of detection using sensor electrode
    Patent number: 5271819
    Abstract: A sensor electrode and method for detecting select characteristic in a liquid. The method utilizes filters and adsorbent materials to selectively remove contaminants in the liquid. The improvement comprises back flushing the filters and adsorbent material, once they become saturated, with specific solutions to wash away the select contaminants.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: December 21, 1993
    Assignee: Betz Laboratories, Inc.
    Inventor: Edmund J. Bockowski
  • Method for removing benzene from effluent wash water in a two stage crude oil desalting process
    Patent number: 5271841
    Abstract: Methods of diminishing the benzene content of the effluent wash water in a two stage crude oil desalting system are disclosed. The first stage desalter is operated at "low", near ambient temperatures with decreased mixing of crude oil and wash water and increased addition of demulsifier. The second stage is operated at "hot" temperatures of prior processes with increased mixing of the crude oil and wash water. The effluent wash water has a substantially diminished benzene content compared to prior two-stage desalting systems.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: December 21, 1993
    Assignee: Betz Laboratories, Inc.
    Inventor: Paul R. Hart
  • Inhibition of silica and silicate deposition in cooling water systems
    Patent number: 5271862
    Abstract: A method inhibiting the deposition of silica and silicate compounds on the metallic surfaces of cooling water equipment comprising adding to the water a composition consisting of hydroxyphosphonoacetic acid and a polymer having the formula: ##STR1## wherein M is a water soluble cation. This composition may further comprise a molybdate compound.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: December 21, 1993
    Assignee: Betz Laboratories, Inc.
    Inventor: Donald T. Freese
  • Methods for controlling fouling deposit formation in a liquid hydrocarbonaceous medium
    Patent number: 5271824
    Abstract: Sulfur containing Mannich reaction product compounds are used as effective antifoulants in liquid hydrocarbonaceous mediums, such as crude and gas oil distillates during processing of such liquids at elevated temperatures.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: December 21, 1993
    Assignee: Betz Laboratories, Inc.
    Inventors: David R. Forester, Paul V. Roling
  • Gelled biocidal treatments
    Patent number: 5266218
    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: April 15, 1993
    Date of Patent: November 30, 1993
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, David M. Polizzotti