Patents Represented by Attorney Alexander D. Ricci
  • Patent number: 5643534
    Abstract: A method for inhibiting corrosion of metals in contact with an aqueous alkanolamine solution in an amine unit for removing of acid gases from a hydrocarbon, comprising adding to the solution a sufficient amount of a corrosion-inhibiting composition comprising a blend of salicylic acid with a reaction product of maleated tall oil fatty acid polyhydroxy polyalkane and ammonium or potassium hydroxide; tallow diamine quaternary dichloride or alkanediol or mixtures thereof, and alkanol or alkanolamine. The blend may be diluted in water and may optionally include an antifoam material.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: July 1, 1997
    Assignee: BetzDearborn Inc.
    Inventor: Ljiliana V. Minevski
  • Patent number: 5643500
    Abstract: The present invention is directed towards the use of a reaction product of an alkynediol and a polyalkylene polyamine to inhibit metal surface corrosion caused by water present in the hydrocarbons in oil pipelines.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: July 1, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Bruno Morin, Alan E. Goliaszewski
  • Patent number: 5643462
    Abstract: Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The tannin containing polymers comprise copolymers of tannin and a cationic monomer. Another embodiment comprises tannin containing polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.
    Type: Grant
    Filed: May 20, 1994
    Date of Patent: July 1, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Jen-Chi Chen, Fu Chen, Gerald C. Walterick, Jr., Stephen R. Vasconcellos
  • Patent number: 5641542
    Abstract: A method of forming a protective coating on aluminum and aluminum alloy surfaces to improve adherence of siccative coatings such as inks, paints, and lacquers. The method involves rinsing acid treatments from aluminum surfaces followed by coating the aluminum surfaces with a polymeric composition. The method provides improved adhesion of siccative coverings to treated aluminum surfaces over chrome containing and non-chrome containing fluoroacid and polymer mixture treatments.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: June 24, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Jeffrey I. Melzer, Barry P. Gunagan
  • Patent number: 5641537
    Abstract: A process for measuring the coating weight of a dried-in-place non-chromate polyacrylamide based conversion coating is disclosed. An ammonium hexafluorotitanate tracer added to such a conversion coating was found to not adversely affect coating properties. The tracer was found to remain proportional to the polymer matrix when the coating was analyzed by X-ray fluorescence.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: June 24, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Jiangbo Ouyang, William L. Harpel
  • Patent number: 5639397
    Abstract: A method for suppressing the dissemination of fugitive dust particles into the atmosphere by using an aqueous solution of a water soluble graft copolymer of the general structure: ##STR1## wherein E is the repeat unit obtained after polymerization of an .alpha., .beta. ethylenically unsaturated compound, the molar percentage of a:b is from about 95:5 to 5:95, with the proviso that the sum of a and b equals 100%; G comprises the structure: ##STR2## wherein d, R.sub.1, R.sub.2 and R.sub.3 are the same or different and are hydrogen or a lower alkyl group having C.sub.1 to C.sub.3, F is a salt of an ammonium cation and the molar percentage of c:d is from 95:5 to 5:95 with the proviso that the sum of c and d equals 100%; or an aqueous solution of a water soluble block copolymer of the general structure: ##STR3## wherein J is a polymeric segment obtained from the polymerization of ethylenically unsaturated hydrophobic monomers initiated by a difunctional initiator; R.sub.4 and R.sub.5 are H or a C.sub.1 to C.sub.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: June 17, 1997
    Assignee: BetzDearborn Inc.
    Inventor: Donald C. Roe
  • Patent number: 5632899
    Abstract: The present invention is directed to methods of detoxifying water containing alkylthioalkylamine compounds. The methods comprise adding to an aqueous system containing alkylthioalkylamines, a sufficient quantity of a swelling type natural or synthetic clay to neutralize the toxicity associated with alkylthioalkylamines to aquatic organisms.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: May 27, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Joseph C. Petrille, III, Michael W. Werner, Wilson K. Whitekettle
  • Patent number: 5632860
    Abstract: A method for controlling foam in the papermaking operation comprising a polyether surfactant and polyethoxylated sorbitol hexaoleate.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: May 27, 1997
    Assignee: BetzDearborn Inc.
    Inventors: William A. Hendriks, Daniel J. Barnett
  • Patent number: 5629385
    Abstract: This invention is directed to certain novel N-functionalized polyallylamines having recurring units represented by the formula: ##STR1## wherein A, B, C and D are independently selected from the group consisting of hydrogen, CH.sub.2 PO.sub.3 H.sub.2, (CH.sub.2).sub.n COOH, (CH.sub.2).sub.m SO.sub.3 H and water-soluble salts thereof, wherein n=1 to 4, m=1 to 4, X is 1 to 99 mol %, Y is 1 to 99 mol % and X+Y=100 and with the proviso that when A is hydrogen, B is (CH.sub.2).sub.n COOH, or (CH.sub.2).sub.m SO.sub.3 H and at least one of C and D is CH.sub.2 PO.sub.3 H.sub.2 or (CH.sub.2).sub.m SO.sub.3 H, when A is (CH.sub.2).sub.n COOH, at least one of B, C and D is CH.sub.2 PO.sub.3 H.sub.2 or (CH.sub.2).sub.m SO.sub.3 H and when A is CH.sub.2 PO.sub.3 H.sub.2, at least one of B, C or D is (CH.sub.2).sub.n COOH or (CH.sub.2).sub.m SO.sub.3 H. The compositions of this invention are useful in water treatment to inhibit or remove scale deposits.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: May 13, 1997
    Assignee: BetzDearborn Inc.
    Inventor: Lawrence L. Kuo
  • Patent number: 5629212
    Abstract: A chloride analyzer includes an inlet valve and filters for process water to be analyzed, as well as a pH electrode to verify the pH value of the incoming liquid before further treatment. A stripper bubbles stripping air through the process water to remove hydrocarbons and hydrogen sulfide therefrom, and the discharge line from said stripper feeds a reaction vessel to which also reagent from a supply vessel is passed. After a suitable reaction time, optionally followed by a further air stripping operation through air supply line, the reaction products are fed via line to an ionometry measuring cell where chloride analysis is carried out using a specific ion selective electrode.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 13, 1997
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: Patrick Herman, Jean M. Faure, Philippe Engelberg, Michel Mercusot
  • Patent number: 5626720
    Abstract: A method for the control of pitch in an aqueous system used in pulp or paper making is disclosed which comprises adding to the system, or to the pulp making or paper making machinery, a water soluble polymer derived from (a) an epihalohydrin, a diepoxide or a precursor of an epihalohydrin or diepoxide, (b) an alkyl amine having a functionality with respect to an epihalohydrin of 2 and (c) an amine which has a functionality with respect to an epihalohydrin greater than 2 and which does not possess any carbonyl groups.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: May 6, 1997
    Assignee: W.R. Grace & Co.-Conn.
    Inventor: Thord Gustav G. Hassler
  • Patent number: 5627145
    Abstract: A method for controlling phosphonates which tend to precipitate with metal ions in water treatment operations comprising, adding to the water a water-soluble copolymer containing one or more of the following monomeric units: ##STR1## in which: R is hydrogen or an alkyl group, R.sub.1 is an alkyl group and X is hydrogen, NH.sub.4.sup.+, a water soluble metal ion or organic base; and[b] a monocarboxylic acid monomer; and adding the copolymer to the water to be treated in an amount sufficient to prevent precipitation of said phosphonates.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: May 6, 1997
    Assignee: BetzDearborn Inc.
    Inventor: Peter K. L. G. Thevissen
  • Patent number: 5624568
    Abstract: A treatment for reducing viscosity and inhibiting settling of an aqueous 30% or higher by weight magnesium hydroxide slurry which comprises adding to the slurry an amount, effective for the purpose of a combination of an alkyl sulfosuccinate surfactant, a xanthan gum and a clay.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: April 29, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Gregory J. Pomrink, Bruce K. Fillipo
  • Patent number: 5620671
    Abstract: An apparatus mountable atop a container having a cavity containing a solid material, an orifice positioned atop the container and a liquid inlet. The apparatus has a collar having an axial bore, a pivotable conduit attached to the collar and a diffuser attached to the conduit. The apparatus ensures that solid material within the container remains flooded during dispensing of liquid from the container and provides convenient accessibility to the diffuser for removal, inspection and replacement. The apparatus is particularly well suited for dispensing of liquids containing solid halogen donor materials from solid halogen donor containers.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: April 15, 1997
    Assignee: BetzDearborn Inc.
    Inventor: Donald P. Shoemaker
  • Patent number: 5621154
    Abstract: Methods are provided for cleaning and inhibiting the formation of fouling deposits on jet engine components during the combustion of turbine combustion fuel oils. Methods are also provided for inhibiting the formation and emission of soot and smoke from jet engine exhaust during turbine combustion fuel oil combustion. The methods employ a derivative of polyalkenylthiophosphonic acid added to the turbine combustion fuel oil. The preferred derivative is pentaerythritol ester of polyisobutenylthio-phosphonic acid.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: April 15, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Bruce E. Wright, William L. Witzig
  • Patent number: 5616278
    Abstract: A method and compounds for inhibiting the formation of scale, e.g., barium scale, and controlling corrosion is disclosed. The method is particularly effective at inhibiting or preventing corrosion of ferrous-based metals in contact with the aqueous systems such as cooling water systems. The method comprises introducing into the aqueous system a compound of the general formula: ##STR1## wherein R is hydrogen, alkyl, aryl, substituted alkyl or substituted aryl; R' and R" are each independently hydrogen, C.sub.1-4 alkyl or C.sub.1-4 substituted alkyl; Z is O, S, NH or NR, where R is as described above; n is a positive integer greater than 1; f is a positive integer; and M is hydrogen, a water soluble cation (e.g., NH.sub.4.sup.+, alkali metal), or a C.sub.1-3 alkyl group.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: April 1, 1997
    Assignee: BetzDearborn Inc.
    Inventors: William S. Carey, Andrew Solov, Libardo A. Perez, Donald T. Freese
  • Patent number: 5614103
    Abstract: A method and composition for detackifying or coagulating and flocculating waterborne and mixed waterborne/solventborne paints in paint spray booth water. Aluminum chlorohydrate and a tannin containing polymer, preferably in an aqueous solution, are added to the paint spray booth water to detackify or coagulate and flocculate the paints.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: March 25, 1997
    Assignee: BetzDearborn, Inc.
    Inventors: Howard B. Agree, Jen-Chi Chen, Robert A. Iezzi
  • Patent number: 5614081
    Abstract: Alkylphosphonate ester compounds or acids thereof are disclosed as effective fouling inhibitors in liquid hydrocarbonaceous medium undergoing processing at elevated temperatures.
    Type: Grant
    Filed: June 12, 1995
    Date of Patent: March 25, 1997
    Assignee: BetzDearborn Inc.
    Inventors: William S. Carey, Jeffrey H. Peltier, Alan E. Goliaszewski
  • Patent number: 5614602
    Abstract: A process for preparing a water-soluble polymer dispersion is herein provided which is characterized by polymerizing from about 10 to 50 mole percent of a monomer having a formula (II); from about 1 to 50 mole percent of N-alkylacrylamide, N,N-dialkylacrylamide or mixtures thereof; having a formula (III) from about 1 to 70 mole percent acrylamide; and optionally up to about 4 mole percent of a monomer having a formula (I) having a benzyl functionality. The polymerization is carried out in the presence of an aqueous solution of a polyvalent anionic salt which contains (1) a water soluble cationic polymer which is insoluble in the aqueous salt solution and (2) a water soluble cationic polymer which is soluble in the aqueous salt solution.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: March 25, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Edward J. Connors, Michelle L. Cotter, Fu Chen
  • Patent number: 5614028
    Abstract: An acid based cleaning and passivating treatment for metal surfaces is provided. The single step acid based cleaning and passivating is provided by incorporating a corrosion inhibiting amount of an ethoxylated tertiary dodecyl mercaptan into an acidic metal cleaner.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: March 25, 1997
    Assignee: BetzDearborn Inc.
    Inventor: Edward A. Rodzewich