Biocidal Patents (Class 162/161)
  • Patent number: 4692374
    Abstract: An antimicrobially active, non-woven web, a wet wiper containing the web, and a method of making the web. The method includes the steps of forming an unbonded fibrous web; applying throughout the unbonded fibrous web an uncured binder and an antimicrobial agent, the antimicrobial active agent being substantive to the fibers of the web and to the binder; and curing the binder material to bind the fibers together to form an antimicrobially active, non-woven web. A preferred antimicrobial agent is an organo-silicon quaternary ammonium salt, especially a 3-(trimethoxylsilyl) propyldidecylmethyl ammonium chloride or a 3-(trimethoxysilyl) proplyloctadecyldimethyl ammonium chloride.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: September 8, 1987
    Assignee: James River Corporation
    Inventor: Michael P. Bouchette
  • Patent number: 4684469
    Abstract: A method of use of a two component biocidal preparation suitable for controlling slime, microbial organisms such as bacteria, and fungi in industrial waters is disclosed. The preparation includes a biocide and a polysaccharide degrading enzyme effective against those polysaccharides typically found in industrial waters.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: August 4, 1987
    Assignee: Ecolab Inc.
    Inventors: Daniel E. Pedersen, Herbert J. Hatcher
  • Patent number: 4678822
    Abstract: A bonded fibre insulation batt is produced by ragging, teasing and otherwise doffering fibres of wool and/or synthetic or other natural fibres such as monoacrylic, acrylic, polyamide, polyester or cotton fibres, so as to form a sliver with said fibres randomly dispersed. The sliver is passed through a lapper which causes the sliver to lap on itself to form a mat of desired thickness. The sliver is sprayed with a resin emulsion prior to lapping so that the mat produced is throughly impregnated. The resin emulsion can include a fireproofing resin, and preferably a pesticide and a smoke retardant. The impregnated mat passes to a dryer to remove a substantial part of the water content thereof with minimal heating of the fibres. Following the water removal the mat passes to an oven to cure the resin thus forming the insulating batt which can be cut to desired size.
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: July 7, 1987
    Assignees: Maxwell Victor Lane, George Kaddis
    Inventor: Richard L. Lewellin
  • Patent number: 4673509
    Abstract: The growth of microbiological contaminants in industrial cooling and process waters and in aqueous based products, susceptible to microbiological spoilage on storage, is inhibited by the presence of a phosphorus compound having a hydroxy alkyl group directly attached to the phosphorus atom, such as tetrakis hydroxy methyl phosphonium sulphate.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: June 16, 1987
    Assignee: Albright & Wilson Limited
    Inventors: Keith P. Davis, Robert E. Talbot
  • Patent number: 4597940
    Abstract: This invention concerns a treatment for preserving or protecting moist wood against attacks from microorganisms (fungi) with the use of evaporable or sublimable ammonium salts. The protection is obtained by distributing the salts close to the wood so that the salts form an atmosphere around the wood in which the microorganisms cannot develop. The treatment is of special interest for moist wood during a storage period until it has been dried and is not further attached by fungi.
    Type: Grant
    Filed: February 5, 1985
    Date of Patent: July 1, 1986
    Inventor: Bror O. Hager
  • Patent number: 4595691
    Abstract: The combination of biocides,A. 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one; andB. 2-(thiocyanomethylthio)-benzothiazole provide a synergistic material for controlling microorganisms in industrial process waters.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: June 17, 1986
    Assignee: Nalco Chemical Company
    Inventors: Thomas M. LaMarre, Cynthia H. Martin, Madelynn T. Wilharm
  • Patent number: 4560619
    Abstract: A wood improver comprising a waste liquor produced by the digestion of pulp, such as kraft, sulfite or semichemical pulp, and optionally further containing a Steffen waste liquor from beet sugar plant and/or polyethylene glycol. Also disclosed is a method of improving the quality of wood by treating it with the improver to prevent its cracking during drying.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: December 24, 1985
    Assignee: Nippon Tensaiseito Kabushiki Kaisha
    Inventor: Yasutsugu Yamada
  • Patent number: 4559103
    Abstract: Disclosed is a method of producing a packaging paper for packaging metallic materials, as well as a packaging material such as corrugated box produced from the packaging paper, the method comprising at least one of the steps of (i) pulping a material by a cooking liquor containing no sulfur compound, or pulping the material by a cooking liquor containing a sulfur compound and then oxidizing the pulp with a peroxide, (ii) conducting the paper making step in the neutral region of pH value ranging between 6 and 8, and (iii) applying a rust-prevention agent and/or a sterilizer to the paper sheet. Disclosed also are a packaging paper and packaging material for packaging metallic materials, produced by the above-mentioned method.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: December 17, 1985
    Assignee: Honshu Seishi Kabushiki Kaisha
    Inventors: Yoshika Nomura, Susumu Sano, Sadahiro Shoji
  • Patent number: 4539071
    Abstract: This invention relates to the elimination of bacterial deposits in cooling water systems and in water systems used in paper making. This is achieved by using a combination of glutaraldehyde and isothiazolone.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: September 3, 1985
    Assignee: Dearborn Chemicals Limited
    Inventors: Richard P. Clifford, Gerrard A. Birchall
  • Patent number: 4533435
    Abstract: An antimicrobial additive is incorporated into the binding agent of a heavy-duty, kraft-type paper having the characteristics of substantial density, air impermeability, and improved printability. The antimicrobial additive migrates from within the binding agent onto the paper fibers to substantially eliminate growth of micro-organisms thereon.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: August 6, 1985
    Assignee: Microban Products Company
    Inventor: Henry S. Intili
  • Patent number: 4532007
    Abstract: Use of oxygen, oxygen containing gases or substances giving off oxygen in reduction or inhibition of the dark coloring of pulp or paper in white water systems, especially closed ones, in production of pulp and paper, these substances being added to the white water system in such an amount that aerobic conditions are maintained substantially permanently in at least a part of the white water system, i.e. the redox potential is higher than -100 mV.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: July 30, 1985
    Assignees: Holmens Bruk Aktiebolag, L'Air Liquide S.A. pour l'Etude et Exploitation des Procedes Georges Claude
    Inventor: Per-Olle Noren
  • Patent number: 4518610
    Abstract: This invention relates to microbicidal/microbistatic compositions for industrial use which comprise 4,5-dichloro-1,2-dithiol-3-one and an alkylenebisthiocyanate and a method of killing and/or inhibiting the growth of microbes by using the aforementioned compositions.
    Type: Grant
    Filed: December 3, 1981
    Date of Patent: May 21, 1985
    Assignees: Katayama Chemical Works Co., Ltd., Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Osamu Umekawa, Sakae Katayama
  • Patent number: 4479820
    Abstract: There are employed as biocides for aqueous systems water soluble low molecular weight polycondensation products which are produced from acrolein and formaldehyde in the molar ratio between 1:1 and 1:10 in aqueous or aqueous-organic medium in the presence of a basic catalyst. The condensation reaction can also be carried out in the additional presence of water soluble mono- or polyhydric alcohols and/or acid amides.
    Type: Grant
    Filed: February 8, 1983
    Date of Patent: October 30, 1984
    Assignee: Degussa Akteingesellschaft
    Inventors: Wolfgang Merk, Karl-Heinz Rink
  • Patent number: 4478683
    Abstract: A method of killing and inhibiting the growth of microorganisms in industrial process streams comprises the addition of an enzymatically catalyzed biocide system utilizing a microbial or plant dehydrogenase enzyme such as peroxidase or laccase in the presence of an oxidant such as hydrogen peroxide or oxygen to oxidize phenolic compounds found in or added to the process streams to produce oxidation products that are toxic to microorganisms.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: October 23, 1984
    Assignee: Westvaco Corporation
    Inventor: Steve A. Orndorff
  • Patent number: 4466975
    Abstract: A microbicidal/microbistatic compositions for industrial use, which comprises 4,5-dichloro-1,2-dithiol-3-one and 1,2-benzisothiazolin-3-one, and a method of killing or inhibiting the growth of microbes, which comprises adding 4,5-dichloro-1,2-dithiol-3-one and 1,2-benzisothiazolin-3-one simultaneously or at intervals to a system to be controlled microbicidally/microbistatically.
    Type: Grant
    Filed: April 2, 1982
    Date of Patent: August 21, 1984
    Assignees: Yoshitomi Pharmaceutical Industries, Ltd., Katayama Chemical Works Co., Ltd.
    Inventors: Masato Magami, Toshio Sato, Sakae Katayama, Osamu Umekawa
  • Patent number: 4462820
    Abstract: A method of using mono- or dibromodicyanomethane for controlling harmful organisms in water, in aqueous systems, in oil or in fuels is disclosed. The compounds act extremely rapidly in very low concentrations.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: July 31, 1984
    Assignee: Ciba-Geigy Corporation
    Inventors: Reinhardt Grade, Joachim Lorenz
  • Patent number: 4451376
    Abstract: An improved method for treating alkaline industrial process waters to control the growth and deposit of microorganisms which comprises adding to such waters a combination of a water-soluble anionic polymeric dispersant having a molecular weight not greater than 50,000 and hypobromous acid, said hypobromous acid having been produced by contacting a solution containing:(a) a water-soluble inorganic bromide, and(b) an anionic polymeric dispersantwith a chlorine containing oxidant chosen from the group consisting of an inorganic hypochlorite salt, hypochlorous acid, and chlorine.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: May 29, 1984
    Assignee: Nalco Chemical Company
    Inventor: John D. Sharp
  • Patent number: 4370199
    Abstract: A method of killing and inhibiting the growth of microorganisms in industrial process streams comprises the addition of an enzymatically catalyzed biocide system utilizing a microbial or plant dehydrogenase enzyme such as peroxidase or laccase in the presence of an oxidant such as hydrogen peroxide or oxygen to oxidize halide salts, or phenolic compounds found in or added to the process streams to produce oxidation products that are toxic to microorganisms.
    Type: Grant
    Filed: November 9, 1981
    Date of Patent: January 25, 1983
    Assignee: Westvaco Corporation
    Inventor: Steve A. Orndorff
  • Patent number: 4339453
    Abstract: 4-Amino- and 2,4-diaminopyrimidines with a quaternized ring nitrogen and an oxygen bearing substituent such as hydroxyalkyl, alkoxyalkyl, or alkanoyl on one of the exo- or endocyclic nitrogens and a C.sub.6-18 alkyl on another, are highly active antimicrobial agents with a relatively low acute mammalian toxicity.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: July 13, 1982
    Assignee: Merck & Co., Inc.
    Inventors: Nathaniel Grier, Elbert E. Harris, Henry Joshua, Arthur A. Patchett, Bruce E. Witzel, Richard A. Dybas
  • Patent number: 4337117
    Abstract: Synthetic sheet material is resistant to decay by fungus and other microbial organisms and particularly useful in shoe construction, mulch papers and the like. The material comprises a uniform distribution of cellulose and optionally synthetic fiber within a matrix or binder and is formed from a furnish of the fibers; a metallic quinolinolate which lends the material decay resistant; a polymer colloid such as an acrylic latex which prevents the coagulation of the subsequently added elastomeric binder by the metallic quinolinolate; and a cationic polymer which acts as a retaining agent for the metallic quinolinolate in the synthetic sheet material.
    Type: Grant
    Filed: August 13, 1980
    Date of Patent: June 29, 1982
    Assignee: Texon Inc.
    Inventors: Warren J. Bodendorf, Alphonse R. Presto
  • Patent number: 4334957
    Abstract: There disclose stable and non-aqueous microbicidal compositions which are useful for controlling slime in pulp and paper manufacturing processes and industrial cooling water systems and which comprise 4,5-dichloro-1,2-dithiol-3-one as the active ingredient, and specific surfactants and hydrophilic organic solvents.
    Type: Grant
    Filed: July 29, 1980
    Date of Patent: June 15, 1982
    Assignees: Katayama Chemical Works Co. Ltd., Yoshitomi Pharmaceutical Industries Ltd.
    Inventors: Sakae Katayama, Osamu Umekawa
  • Patent number: 4315798
    Abstract: Synthetic sheet material is resistant to decay by fungus and other microbial organisms and particularly useful in shoe construction where flexibility is required. The material comprises a uniform distribution of cellulose and optionally synthetic fiber within an acrylic elastomeric matrix or binder and is formed from a furnish of the fibers; a metallic quinolinolate which lends the material decay resistant; a polymer colloid such as an acrylic latex which prevents the coagulation of the subsequently added acrylic elastomeric binder by the metallic quinolinolate; and a cationic polymer which acts as a retaining agent for the metallic quinolinolate in the synthetic sheet material.
    Type: Grant
    Filed: August 13, 1980
    Date of Patent: February 16, 1982
    Assignee: Texon Inc.
    Inventor: Warren J. Bodendorf
  • Patent number: 4295932
    Abstract: A method for controlling the microorganism in aqueous systems comprising treating such systems with a biocidal amount of a mixture of 75% of 5-chloro-2-methyl-4-isothiazolin-3-one and 25% 2-methyl-4-isothiazolin-3-one with chlorine or chlorine dioxide.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: October 20, 1981
    Assignee: Naloc Chemical Company
    Inventor: Frances C. Pocius
  • Patent number: 4293559
    Abstract: The present invention relates to certain compositions and processes useful for inhibiting the growth of microorganisms in water and, in particular, water used for industrial purposes; for example, in the manufacture of paper, in cooling water systems in effluent water treatment, and in secondary recovery petroleum operations. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, sulfate-reducing bacteria, fungi, and algae, which produce slime in aqueous systems where such slime is objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising 2-(thio-cyanomethylthio)benzothiazole and 2'-hydroxyethyl 2,3-dibromopropionate or 2'-hydroxyethyl 2-bromoacrylate.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: October 6, 1981
    Assignee: Buckman Laboratories, Inc.
    Inventors: John D. Buckman, Stanley J. Buckman, Betty S. Johnson, John D. Pera
  • Patent number: 4290846
    Abstract: The invention discloses a method of protecting organic or inorganic material from attack by microorganisms, which comprises incorporating in or applying to the surface of the material to be protected 3,5-dibromo-4-chlorophenol, 3,5-dibromo-4-fluorophenol or 3,5-dichloro-4-bromophenol or a mixture thereof. Compositions for carrying out the method of the invention are also disclosed.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: September 22, 1981
    Assignee: Ciba-Geigy Corporation
    Inventor: Rene Muntwyler
  • Patent number: 4289581
    Abstract: There disclose stable and non-aqueous microbicidal compositions which are useful for controlling slime in pulp and paper manufacturing processes and industrial cooling water systems and which comprise 4,5-dichloro-1,2-dithiol-3-one as the active ingredient, and specific surfactants and hydrophilic organic solvents.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: September 15, 1981
    Assignee: Katayama Chemical Works Co., Ltd.
    Inventors: Sakae Katayama, Osamu Umekawa
  • Patent number: 4285765
    Abstract: The present invention relates to certain compositions and processes useful for inhibiting the growth of microorganisms in water and, in particular, water used for industrial purposes; for example, in the manufacture of paper, in cooling water systems, in effluent water treatment, and in secondary recovery petroleum operations. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, sulfate-reducing bacteria, fungi, and algae, which produce slime in aqueous systems where such slime is objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising 2-(thiocyanomethylthio)benzothiazole and 2,2-dibromo-3-nitrilopropionamide.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: August 25, 1981
    Assignee: Buckman Laboratories, Inc.
    Inventors: John D. Pera, Betty S. Johnson
  • Patent number: 4248685
    Abstract: Hydrocolloidal dispersions of random interpolymer compositions that have a capacity for absorbing water in amounts of from 10 to 125 times their own weight or greater and are also bacteriostatic are prepared by the polymerization in aqueous medium of a mixture of monomers comprising (1) up to about 90% by weight of an ester of an .alpha.,.beta.-olefinically unsaturated carboxylic acid and a monohydric or polyhydric alcohol having a terminal quaternary ammonium group and (2) at least one .alpha.,.beta.-olefinically unsaturated comonomer in the presence of a crosslinking agent comprising a difunctional monomer derived from an .alpha.,.beta.-olefinically unsaturated carboxylic acid. The interpolymer compositions can be used for binding or coating nonwoven fabrics including paper to improve water absorbency, or cast into a structurally self-supporting film.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: February 3, 1981
    Assignee: Johnson & Johnson
    Inventors: Charles H. Beede, Harold L. Waldman, Theodore Blumig
  • Patent number: 4245689
    Abstract: An improved dimensionally stable backing web is disclosed, especially for resilient flooring product and linoleum, comprising cellulosic fiber, a binder, antioxidant, fungicide and glass fiber, as well as optionally dyes or pigments, surfactants and vulcanizing agents. Also optionally present are calcium silicate mineral fiber or synthetic fiber, such as polyolefin, polyester, nylon, acrylic or modacrylic fiber, a cellulose acetate or mixtures thereof. The binder can be a natural rubber or synthetic rubber latex or mixtures thereof. The synthetic rubber latex is preferably selected from the following: styrene-butadiene; carboxylated styrene-butadiene, polyacrylic ester, polyvinyl acetate; polyisobutylene, a copolymer formed from vinyl acetate monomers and acrylic acid; polychloroprene, acrylonitrile-butadiene or carboxylated acrylonitrile-butadiene; polyurethane; a copolymer of ethylene and vinyl acetate; or other elastomeric copolymers.
    Type: Grant
    Filed: May 2, 1978
    Date of Patent: January 20, 1981
    Assignee: Georgia Bonded Fibers, Inc.
    Inventors: Henry P. Grard, Daniel LaVietes, Edmond M. Mergelsberg
  • Patent number: 4217363
    Abstract: Methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of .alpha.-chloro-.beta.-aminocrotonamide.
    Type: Grant
    Filed: August 17, 1978
    Date of Patent: August 12, 1980
    Assignees: Givaudan Corporation, Hoffmann-La Roche Inc.
    Inventors: Harold A. Brandman, Milton Manowitz, David L. Coffen
  • Patent number: 4199322
    Abstract: The preparation of bacteriostatic, water-insoluble peroxide-containing complexes of zinc acetate, by reaction of zinc acetate with hydrogen peroxide in the presence of acetic acid, is disclosed. A process for in situ formation and deposition of these complexes on cellulosic and polyester textiles is described. The textile finishes so produced inhibit the growth and spreading of odor- and infection-producing gram-positive and gram-negative bacteria on the treated textiles. The antibacterial activity of the finished textiles is durable to repeated launderings.
    Type: Grant
    Filed: December 28, 1978
    Date of Patent: April 22, 1980
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Gary F. Danna, Tyrone L. Vigo, Clark M. Welch
  • Patent number: 4120686
    Abstract: Composition for combating slimes containing as the active compound combination, tetramethylthiuram disulfide and aroyl-ethyl-ammonium salts having the formula ##STR1## wherein R.sup.1 is optionally monosubstituted or polysubstituted aromatic, carbocyclic or heterocyclic, radical andR.sup.2, r.sup.3 and R.sup.4 are the same or different and are optionally monosubstituted or polysubstituted aliphatic or aromatic carbocyclic or form, together with 4 to 6 hydrocarbon members, a heterocyclic ring, andX is an anion of an inorganic or organic acid.
    Type: Grant
    Filed: June 2, 1976
    Date of Patent: October 17, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilfried Paulus, Hermann Genth
  • Patent number: 4119537
    Abstract: These chemical formulations and agents are to be used as water treatment agents in industrial water systems to control and improve such factors as bacteriological contamination, pollution and cleanliness. Chemical limes, hydrosulfites and dispersants are used together in a formulation, in relatively low concentrations, to primarily inhibit and destroy slime and microorganisms. No toxicants as such are needed. In addition, the chemical lime particles can be coated to give a delayed and safer reaction with water and to give reduced dusting.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: October 10, 1978
    Inventor: Hershel Finkelstein
  • Patent number: 4105431
    Abstract: Disclosed herein are certain novel compounds which are most properly designated as 3-isothiazolones. These compounds and compositions containing them exhibit a broad spectrum of biocidal properties and are particularly effective for the control of microorganisms.
    Type: Grant
    Filed: June 8, 1973
    Date of Patent: August 8, 1978
    Assignee: Rohm and Haas Company
    Inventors: Sheldon N. Lewis, George A. Miller, Andrew B. Law
  • Patent number: 4102707
    Abstract: The present disclosure is directed to methods and agents for detaching and dispersing microbiological deposits which occur on support materials in contact with aqueous systems. The method includes adding to the aqueous medium and thereby contacting the deposits with from about 1 to 100 parts per million of an agent which possesses hydrogen-bonding characteristics. Preferred agents include but are not limited to urea, ethanolamine, water-soluble acrylamide polymers, and water-soluble reaction products of amines, and epoxy or expoxy precursor compounds and mixtures thereof.
    Type: Grant
    Filed: June 10, 1976
    Date of Patent: July 25, 1978
    Assignee: Betz Laboratories, Inc.
    Inventor: K. Robert Lange
  • Patent number: 4101654
    Abstract: Quaternary nitrogen-heterocyclic phosphonates wherein the phosphonate group is ortho- or para- to the nitrogen heterocyclic group, where the compounds are characterized as follows: ##STR1## WHEREIN THE DOTTED LINE REPRESENTS A CYCLIC STRUCTURE WHICH CYCLIC STRUCTURE MAY BE THE SOLE CYCLIC STRUCTURE, OR MAY BE ATTACHED TO OTHER CYCLIC GROUPS, WHERE R is a hydrocarbon or a substituted hydrocarbon group such as alkyl, aryl, alkaryl, aralkyl, etc., and X is an anion such as halogen, a sulfite, a sulfate, s sulfonate-containing group, etc.These nitrogen-heterocyclic phosphonates are prepared by reacting an aromatic nitrogen-heterocyclic compound, wherein the nitrogen atom is in the form of a quaternary alkoxy derivative (N-OR hereinafter defined) with a phosphite salt, preferably in the form of an ester of the phosphite, as exemplified by the following equation: ##STR2## Quaternaries of these compounds are prepared by further reaction with a quaternizing agent.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: July 18, 1978
    Assignee: Petrolite Corporation
    Inventor: Derek Redmore
  • Patent number: 4081267
    Abstract: A herbicidal and fungicidal composition which comprises as an active ingredient a pyridyltriazinone compound of the formula: ##STR1## wherein R is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxycarbonylmethyl group whose alkoxy has 1 to 3 carbon atoms or a phenyl group.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: March 28, 1978
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shunichi Hashimoto, Osamu Kirino, Toshiaki Ozaki, Norihisa Yamashita
  • Patent number: 4065387
    Abstract: The present invention relates to a slime control agent comprising a bromite substance as an effective component, and a method of controlling the formation of slime by adding a bromite substance to water systems at a rate of 1 to 200 ppm.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: December 27, 1977
    Assignee: Kurita Water Industries, Ltd.
    Inventors: Takao Tsuneki, Norio Takahashi, Hirohisa Tashiro
  • Patent number: 4061775
    Abstract: Novel diphenyl and loweralkyl substituted diphenyl polyamines are useful antimicrobial agents, as well as algae inhibitors. They are especially useful because of their low toxicity, and as such are advantageously included as the active agent in surgical scrubs, antibacterial soaps, as preservatives in cosmetic preparations, and the like. They also can be used for topical treatment of dermatological conditions having a bacterial origin or implication such as Acne vulgaris.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: December 6, 1977
    Assignee: Merck & Co., Inc.
    Inventors: Richard A. Dybas, Nathaniel Grier, Bruce E. Witzel
  • Patent number: 4055467
    Abstract: Slime in industrial process waters can be dispersed and prevented by treating the waters with a few ppm of the enzyme, Rhozyme HP-150, a pentosanase-hexosanase.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: October 25, 1977
    Assignee: Nalco Chemical Company
    Inventors: Ronald J. Christensen, George J. Zivtins
  • Patent number: 4052258
    Abstract: Dibromonitromethyl methyl sulfone is effective as a slimicide at a concentration of about 100 parts per million.
    Type: Grant
    Filed: June 24, 1976
    Date of Patent: October 4, 1977
    Assignee: The Dow Chemical Company
    Inventors: Christian T. Goralski, Thomas C. Klingler, Paul A. Wolf
  • Patent number: 4049417
    Abstract: Novel dicyclohexyl, dicyclohexenyl and cyclohexylcyclohexenylalkyl polyamines are useful antimicrobial agents, as well as algae inhibitors. They are especially useful in agriculture to protect plants against diseases such as leaf, stem, and fruit spotting, internal discoloration and decay of fruits and vegetables. These compounds are particularly active against diseases caused by the genera Pseudomonas, Xanthomonas, Erwinia, and Corynebacterium.
    Type: Grant
    Filed: March 8, 1976
    Date of Patent: September 20, 1977
    Assignee: Merck & Co., Inc.
    Inventors: Bruce E. Witzel, Nathaniel Grier, Richard A. Dybas, Robert A. Strelitz
  • Patent number: 4045244
    Abstract: The present disclosure is directed to methods and agents for detaching and dispersing microbiological deposits which occur on support materials in contact with aqueous systems. The method includes adding to the aqueous medium and thereby contacting the deposits with from about 1 to 100 parts per million of an agent which possesses hydrogen-bonding characteristics. Preferred agents include but are not limited to urea, ethanolamine, water-soluble acrylamide polymers, and water-soluble reaction products of amines, and epoxy or expoxy precursor compounds and mixtures thereof.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: August 30, 1977
    Assignee: Betz Laboratories, Inc.
    Inventor: K. Robert Lange
  • Patent number: 4031241
    Abstract: Compounds having the formula ##STR1## in which R is hydrogen or ##STR2## AS SLIME CONTROL AGENTS.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: June 21, 1977
    Assignee: Stauffer Chemical Company
    Inventor: Don R. Baker
  • Patent number: 4022605
    Abstract: A halocyanoacetamide compound having the formula: ##STR1## wherein X is a halogen such as Cl, F, Br and I; Y represents a halogen such as chlorine, fluorine, bromine and iodine or hydrogen atom; andR represents a hydrogen atom or a lower alkyl group containing from 1 to 8 carbon atoms, is stabilized with an organic carboxylic acid or a diol.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: May 10, 1977
    Assignee: Kumiai Chemical Industry Co., Ltd.
    Inventors: Kazumi Konya, Yoshihiro Konagai, Makoto Muto, Hironari Sato, Yoshio Takahashi
  • Patent number: 4018645
    Abstract: A composition containing an .alpha.-chloro-o-acylbenzaldoxime derivative is effective for inhibiting the formation of slime. The composition has a strong activity for killing microorganisms which form slime, e.g., in the paper and pulp industries without such faults as reducing the whiteness of the paper or pulp, reducing the effect of sizing treatments, degrading the products, etc. A method for controlling slime using this composition is also disclosed.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: April 19, 1977
    Assignee: Somar Manufacturing Co., Ltd.
    Inventors: Nobuyasu Takahashi, Taiichi Yamaguchi, Junei Sakaguchi, Hideo Hamada
  • Patent number: 4010277
    Abstract: The present invention relates to certain processes and compositions useful for inhibiting the growth of slime in water and, in particular, water used for industrial purposes; for example, in the manufacture of wood pulp, in the manufacture of paper, in cooling water systems, and in effluent water treatment. The novel processes and compositions of the present invention are processes of mixtures which show unexpected synergistic activity against microorganisms, including bacteria, (in particular Aerobacter aerogenes) fungi, and algae, which produce slime in aqueous systems which are objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising a combination 1,3-dichloroacetone oxime acetate and polyoxyethylene sorbitol hexaoleate having an average of 40 oxyethylene groups.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: March 1, 1977
    Assignee: Betz Laboratories, Inc.
    Inventors: Paul Swered, Mary Anne Girard
  • Patent number: 3994772
    Abstract: The present invention relates to certain processes and compositions useful for inhibiting the growth of slime in water and, in particular, water used for industrial purposes; for example, in the manufacture of paper and pulp paper, in cooling water systems and in effluent water treatment. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, fungi and algae, which produce, in aqueous systems or bodies, slime which is objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising .alpha.-Bromo-p-methylacetophenone and 1,3-dichloroacetone oxime acetate.
    Type: Grant
    Filed: October 23, 1975
    Date of Patent: November 30, 1976
    Assignee: Betz Laboratories, Inc.
    Inventors: Paul Swered, Daniel B. Ellis
  • Patent number: RE29770
    Abstract: An improved method for the manufacture of wood fiberboard according to the wet system with a closed white water system includes the steps of drying the incoming lignocellulose containing material, prior to the dilution step, to a dryness, or solid consistency, which is higher than the dryness of the wet lap or sheet before final drying to produce the fiberboard product. Formaldehyde is added to the resulting white water which is homogenized to atomize occurring precipitations through efficient agitation and dispersion prior to being recirculated for use for diluting the incoming fiber material. Thus, there is obtained an efficient closed white water system which results in a reduction of environmentally harmful discharge of polluted water as well as the production of fiberboard with enhanced appearance.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: September 19, 1978
    Assignees: Isorel S.A., Stig Daniel Selander
    Inventors: Stig Daniel Selander, Bernard Marechal, Corrado D'Andrea
  • Patent number: RE29826
    Abstract: A halocyanoacetamide compound having the formula: ##STR1## wherein X is a halogen such as Cl, F, Br and I; Y represents a halogen such as chlorine, fluorine, bromine and iodine or hydrogen atom; andR represents a hydrogen atom or a lower alkyl group containing from 1 to 8 carbon atoms, is stabilized with an organic carboxylic acid or a diol.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: November 7, 1978
    Assignee: Kumiai Chemical Industry Co., Ltd.
    Inventors: Kazumi Konya, Yoshihiro Konagai, Makoto Muto, Hironari Sato, Yoshio Takahashi