Patents Assigned to Betz Laboratories, Inc.
  • Press felt conditioner for neutral and alkaline papermaking systems
    Patent number: 4895622
    Abstract: This invention relates to an improved press felt conditioning treatment which controls the deposition of polymerically flocculated particulate substances in a press felt. The treatment comprises applying to the felt an effective inhibiting amount of a conditioner comprising a relatively low molecular weight organic, anionic polymer and at least one hydrophilic, nonionic or anionic surfactant. The polymer preferrably has an acrylic acid or methacrylic acid functionality and is preferrably selected from the group consisting of homopolymers of acrylic acid, a methacrylic acid/polyethylene glycol allyl ether copolymer, a homopolymer of methacrylic acid, an acrylic acid/polyethylene glycol allyl ether copolymer, and an acrylic acid/1-allyloxy-2-hydroxypropane sulfonic acid copolymer.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: January 23, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Daniel J. Barnett, Abdul Q. Khan, Patricia R. Keen
  • Water treatment polymers and methods of use thereof
    Patent number: 4895916
    Abstract: New composition of monomers and polymers and their methods of use are disclosed. The polymers are water soluble and are composed of repeat units formed from an ethylenically unsaturated compound, and repeat units formed from substituted allyloxy alkylenes.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: January 23, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, William S. Carey
  • Methods for deactivating copper in hydrocarbon fluids
    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
  • Methods for retarding coke formation during pyrolytic hydrocarbon processing
    Patent number: 4889614
    Abstract: Methods for inhibiting coke formation in pyrolytic reactors and furnaces are disclosed wherein effective alkaline earth metal salt coke retardant treatments are used. Exemplary coke retardant treatments include magnesium and calcium salts such as the acetate, chloride, and nitrate, and magnesium sulfate salt.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: December 26, 1989
    Assignee: Betz Laboratories, Inc.
    Inventor: David R. Forester
  • Detackification of adhesive materials contained in secondary fiber with polyvinyl alcohol
    Patent number: 4886575
    Abstract: The invention is directed to the use of polyvinyl alcohol to control the problem of "stickies" in waste paper processing.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: December 12, 1989
    Assignee: Betz Laboratories, Inc.
    Inventor: Robert D. Moreland
  • Water soluble phosphonated polymers
    Patent number: 4886617
    Abstract: Novel water soluble polymers containing an hydroxyl alkyl aminoalkylene phosphonate functionality are disclosed. These polymers have utility as deposit control agents effective in a number of water systems such as cooling, boilers conversion coating, paper and pulp processing and gas scrubbing.The polymers are formed from the polymerization of ethylenically unsaturated compounds with a compound having the structure: ##STR1## in which R.sub.1 is an hydroxyl substituted or nonsubstituted lower alkylene group, R.sub.2 is H or lower alyl group, R.sub.3 is a lower alkylene group and M is H or water soluble cation.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: December 12, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, Keith Bair
  • Electrode assembly for in-situ measurement of electrolytic conductivity of boiler water
    Patent number: 4883566
    Abstract: An electrode assembly and a method of electrically insulating the electrode assembly for in-situ measurement of electrolytic conductivity of boiler or other hot alkaline or neutral water, the electrode assembly comprising calcia/hafnia stabilized zirconia wherein the calcia is present from 3 to 10% by weight and the hafnia is present from 0.5 to 6% by weight.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: November 28, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: John A. Muccitelli, Nancy A. Feldman
  • Methods for deactivating iron in hydrocarbon fluids
    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
  • Method for calcium oxalate scale control
    Patent number: 4872995
    Abstract: Methods of controlling the formation of calcium oxalate in aqueous systems are disclosed. The methods comprise adding from about 0.1 to 500 ppm of a water soluble (meth)acrylic acid/allyl ether copolymer to the desired water system. The methods are especially well adapted for use in pulping and paper making systems wherein calcium oxalate is often encountered as a troublesome scale forming compound.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: October 10, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, Daniel L. Michalopoulos
  • Process for controlling pitch deposition from pulp in papermaking systems
    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
  • Water treatment compositions
    Patent number: 4869845
    Abstract: A water soluble polymer composition is disclosed. The polymer has repeat units characterized by the structural formulae: ##STR1## 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.3 is a hydroxy substituted alkyl or alkylene radical having from 1 to about 6 carbon atoms or a non-substituted alkyl or alkylene radical having from 1 to 6 carbon atoms; X is an anionic radical; Z is H or hydrogens or a water soluble cation or cations which together counterbalance the valence of X, and a is 0 or 1. The copolymer is effective in inhibiting the precipitation of certain scale forming salts, and also acts to inhibit corrosion of metal parts in contact with water systems.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: September 26, 1989
    Assignee: Betz Laboratories, Inc.
    Inventor: Fu Chen
  • Novel amine-containing copolymers and their use
    Patent number: 4868263
    Abstract: This invention relates to novel polymeric compositions which are useful for water treatment. These novel compositions are comprised of a polymers of .alpha.,.beta. ethylenically unsaturated monomer(s), preferably containing carboxylic acid or carboxylic amide functionalities, and amine-containing allyl ether monomers.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: September 19, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, William S. Carey
  • Process and composition for stabilized distillate fuel oils
    Patent number: 4867754
    Abstract: This invention relates to processes and compositions for stabilizing distillate fuel oil which comprises adding to the distillate fuel oil an effective stabilizing amount of a mixture of (a) a phosphite compound having the formula ##STR1## wherein R, R' and R" are the same or different and are alkyl, aryl, alkaryl or aralkyl groups and these groups may contain oxygen and/or nitrogen, or R and R' may be hydrogen and (b) an effective stabilizing amount of: an organic compound containing a tertiary amine having the formula T.sub.3 N, wherein the three T groups are the same or different and are alkyl, cycloalkyl, arly, alkyaryl, or aralkyl such that these groups may contain oxygens or additional nitrogens and each T group has from 1 to about 20 carbon atoms; or the reaction product of tallow amine and epichlorohydrin. The weight ratio of (a):(b) is from about 1:50 to about 100:1.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: September 19, 1989
    Assignee: Betz Laboratories, Inc.
    Inventor: Dwight R. Reid
  • Water treatment polymers and methods of use thereof
    Patent number: 4863614
    Abstract: New composition of polymers and methods of use are disclosed. The polymers are water soluble and are composed of repeat units formed from an .alpha.,.beta. ethylenically unsaturated compound, and repeat units formed from allyl alkylene phosphonates.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: September 5, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Fu Chen, William S. Carey
  • Biocidal compositions and use thereof containing a synergistic mixture of 2-bromo-2-nitropropane-1,3-diol and methyl sulfonyl acrylonitile
    Patent number: 4863960
    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 methyl sulfonyl acrylonitrile ("MSA"). 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: September 5, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah K. Donofrio, Wilson K. Whitekettle
  • Process for inhibiting white pitch deposition in papermaking felts
    Patent number: 4861429
    Abstract: This invention relates to a process for inhibiting white pitch deposition in felts of a papermaking system including adding to the felts an effective inhibiting amount of an organic, anionic polyelectrolyte. The molecular weight of the polyelectrolyte is preferably from about 1,000 to 100,000. The polyelectrolyte is selected from the group consisting of polyacrylic acid, polmethacrylic acid, acrylic acid/polyethylene glycol allyl ether copolymers, methacrylic acid/polyethylene glycol allyl ether copolymers, acrylic acid/1-allyloxy-2-hydroxypropane sulfonic acid copolymers. The use of these polyelectrolytes in combination with surfactants provides an especially effective white pitch inhibiting and total felt conditioning process when applied to the felt.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: August 29, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Daniel J. Barnett, Daniel L. Michalopoulos
  • Biocidal compositions and use thereof containing a synergistic mixture of 2 bromo-2-nitropropane-1,-3 diol and N,N-dimethyl-N-phenyl-N-fluorodichloromethylthio)-sulphamide
    Patent number: 4859705
    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 N, N-dimethyl-N.sup.1 -phenyl-N.sup.1 -(fluorodichloromethylthio)-sulphamide ("DPFS"). 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
  • Biocidal compositions and use thereof containing a synergistic mixture of 2-bromo-2-nitropropane-1,3-diol and beta-bromo-beta-nitrostyrene
    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
  • Biocidal compositions and use thereof containing a synergistic mixture of 2-bromo-2-nitropropane-1,3-diol and paratolyl sulfonyl acrylonitrile
    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
  • Method for controlling macroinvertebrates
    Patent number: 4857209
    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 quaternary ammonium salt having the following structure: ##STR1## wherein R.sub.1 is an alkyl group having about 6 to 24 carbons; R.sub.2 is an alkyl, aryl or arylalkyl group having about 6 to 24 carbons; R.sub.3 and R.sub.4 are alkyl groups having about 1 to 4 carbons; and X is chloride, bromide, sulfate, bisulfate, nitrate or acetate. Preferably, the quaternary ammonium salt is water-soluble alkyl dimethyl benzyl ammonium chloride having an alkyl chain length from C.sub.6 to C.sub.24 and, most preferably, it has an alkyl distribution of about 40% C.sub.12, 50% C.sub.14 and 10% C.sub.16.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: August 15, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Larry A. Lyons, Dwight P. Davis, Paul Swered