Patents Represented by Attorney Alexander D. Ricci
  • Patent number: 5900157
    Abstract: Methods for controlling the fouling potential of macroinvertebrates are provided. An effective controlling amount of a polymer comprising a tannin and a cationic monomer is added to an aqueous system suffering from the fouling potential of macroinvertebrates.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: May 4, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Joseph C. Petrille, Michael W. Werner
  • Patent number: 5885413
    Abstract: A process for the deinking of wastepaper is disclosed. The process comprises administering a sufficient amount of a branched alcohol alkoxylate surfactant to a sample of waste paper for which treatment is desired. The surfactant is effective for the flotation of the ink.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: March 23, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Sandra K. Richmann, Frank J. Sutman
  • Patent number: 5885487
    Abstract: The corrosion of metals in contact with aqueous alkanolamine solution in acid gas removal units is inhibited by maintaining in the alkanolamine solution a corrosion inhibiting amount of a compound having the formula: ##STR1## where R is S or O, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently H, C.sub.1 to C.sub.8 alkyl, C.sub.1 to C.sub.8 alkenyl, C.sub.6 to C.sub.10 aryl, C.sub.7 to C.sub.12 alkaryl, C.sub.7 to C.sub.12 aralkyl, C.sub.3 to C.sub.10 cycloalkyl, C.sub.1 to C.sub.8 thiophene, or amino groups. The alkanedithiol is useful for inhibiting the corrosion of metals in both the acid gas rich and lean portions of the acid gas removal unit.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: March 23, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Ljiljana V. Minevski
  • Patent number: 5885419
    Abstract: Methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. Albumins, globulins or blends thereof and spray-dried animal blood cells are added to the pulp or sprayed onto deposition prone surfaces of a papermaking system suffering from organic contaminants.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: March 23, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Duy T. Nguyen, Tien-Feng Ling
  • Patent number: 5886241
    Abstract: The polymerization of an ethylenically unsaturated monomer such as isoprene, butadiene and acrylonitrile is inhibited during storage or handling thereof by the addition of a dihydroxycinnamic acid or derivative thereof.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: March 23, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Graciela B. Arhancet
  • Patent number: 5871691
    Abstract: A method and compounds for inhibiting and controlling corrosion is disclosed. The method is particularly effective at inhibiting or preventing corrosion of ferrous-based metals in contact with 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 -C.sub.3 alkyl group.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: February 16, 1999
    Assignee: BetzDearborn Inc.
    Inventors: William S. Carey, William C. Ehrhardt, Andrew Solov
  • Patent number: 5866011
    Abstract: A method of treating water to inhibit the formation of salt scale is disclosed. The method is particularly effective at inhibiting the formation and deposition of mineral salts in brine concentration and evaporation systems. The method comprises introducing into the system a polyepoxysuccinic acid of the general formula: ##STR1## where n ranges from about 2 to about 50, M is hydrogen or a water soluble cation such as Na.sup.+, NH.sub.4.sup.+ or K.sup.+ and R is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 substituted alkyl.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Gregory J. McGiffney
  • Patent number: 5866013
    Abstract: A method and composition for simultaneously controlling the deposition of scale and the formation of corrosion in a cooling water system comprising adding to the system a combination of (a) a water soluble copolymer having the structure: ##STR1## wherein R.sub.1 is H or lower (C.sub.1 -C.sub.4) alkyl, F is H.sub.2 or O, M is a water soluble cation, R.sub.2 is (CH.sub.2 --CH.sub.2 --O).sub.n, ##STR2## or mixture of both, n is an integer of from 1 to about 40, R.sub.3 is H, lower (C.sub.1 -C.sub.4) alkyl or an acetate, and (b) a water soluble polymer characterized by the structural formula: ##STR3## wherein R.sub.1 is H or lower alkyl (C.sub.1 -C.sub.3); R.sub.2 is OH, OM, or NH.sub.2 ; M is a water soluble cation; R.sub.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Stephen M. Kessler, Donald T. Freese
  • Patent number: 5866523
    Abstract: A cleaning composition and method of use are disclosed. The composition comprises a mixture of a ketone, at least one glycol ether, water and optionally a surfactant. The composition when applied to substrates coated with resinous coatings is effective for removing the coating from the substrate.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Umit Turunc, Patricia A. Popowich
  • Patent number: 5866614
    Abstract: The present invention provides for methods for fumigating soil containing deleterious organisms such as nematodes. The methods utilize an effective amount of acrolein which when added to the soil will control the organisms but will not exhibit phytotoxicity towards the existing or future plant life and an effective amount of a detoxification compound such as for example: sulfites, bisulfites, ammonia or ammonium compounds.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Edmund J. Bockowski, Dwight P. Davis
  • Patent number: 5866032
    Abstract: A composition for of controlling scale formation and deposition and corrosion in aqueous systems is described wherein a treatment solution of a substoichiometric amount of a composition comprising 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.sub.m --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; m=O or 1; and Y and Y.sup.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventors: William S. Carey, Libardo A. Perez, Donald T. Freese, Judith L. Barron
  • Patent number: 5866042
    Abstract: The present invention provides for methods and compositions for inhibiting the corrosion of iron-containing metals in contact with aqueous systems. The present invention further provides for compositions and methods for inhibiting pitting of iron-containing metals in contact with aqueous systems. The methods include the use of a copolymer of acrylic or methacrylic acid and 2-acetoacetoxyethylmethacrylate with or without a polyvalent metal salt or a polyhydroxy-polycarboxylic acid.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Jen-Chi Chen, William C. Ehrhardt
  • Patent number: 5866618
    Abstract: Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100% hydrolysis and a high molecular weight gelatin having a molecular weight of about 100,000 or higher.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Duy T. Nguyen
  • Patent number: 5863463
    Abstract: The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Halo-benzotriazoles such as chloro-tolyltriazole and bromo-tolyltriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: January 26, 1999
    Assignee: BetzDearborn Inc.
    Inventors: David W. Reichgott, Sydia B. Anderson, Michael A. Cady, Roger C. May, Anita G. Monino
  • Patent number: 5863464
    Abstract: The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Halo-benzotriazoles such as chloro-tolyltriazole and bromo-tolyltriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: January 26, 1999
    Assignee: BetzDearborn Inc.
    Inventors: David W. Reichgott, Sydia B. Anderson, Michael A. Cady, Roger C. May, Anita G. Monino
  • Patent number: 5858176
    Abstract: Methods and compositions for inhibiting fouling in vinyl monomers are disclosed. Alkylphosphonate esters or acids thereof are added to vinyl monomers, particularly ethylene dichloride, that are undergoing processing to inhibit fouling.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: January 12, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Graciela B. Arhancet
  • Patent number: 5859280
    Abstract: An alpha-tocopherol is disclosed as a polymerization inhibitor effective against vinyl monomer polymerization. Alpha-tocopherol was found to inhibit polymerization of acrylonitrile and diolefines such as isoprene and butadiene. Alpha-tocopherol was found to interact synergistically with hydroquinone in inhibiting polymerization of acrylonitrile.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: January 12, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Graciela B. Arhancet
  • Patent number: 5851437
    Abstract: Positive static electricity charges in air flow from an air washer generated by an industrial process are reduced and controlled to a desired level by treatment of the water circulating in the air washer with an anionic polymeric material such as water soluble, neutralized polyacrylate.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: December 22, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Bobby J. Brown, Bruce K. Fillipo, David M. Polizzotti, Gregory J. Pomrink
  • Patent number: 5851433
    Abstract: Methods and compositions for breaking oil and water emulsions are disclosed. Oil and water emulsions are broken by treating the emulsion with a copolymer of tannin and a cationic monomer. The preferred composition is an aqueous solution of a copolymer of tannin and a cationic monomer, a water soluble organic multivalent salt and a glycol. The preferred salt is aluminum chlorohydrate and the preferred glycol is hexylene glycol.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: December 22, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Paul R. Hart, Jen-Chi Chen, Fu Chen, Thai H. Duong
  • Patent number: 5846436
    Abstract: Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The polymers are aldehyde-free and comprise copolymers of tannin and a cationic monomer. Another embodiment comprises aldehyde-free 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: February 20, 1997
    Date of Patent: December 8, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Jen-Chi Chen, Fu Chen, Gerald C. Walterick, Jr., Stephen R. Vasconcellos