Biocidal Patents (Class 162/161)
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Patent number: 4692374Abstract: 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: GrantFiled: July 16, 1986Date of Patent: September 8, 1987Assignee: James River CorporationInventor: Michael P. Bouchette
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Patent number: 4684469Abstract: 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: GrantFiled: September 11, 1986Date of Patent: August 4, 1987Assignee: Ecolab Inc.Inventors: Daniel E. Pedersen, Herbert J. Hatcher
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Patent number: 4678822Abstract: 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: GrantFiled: October 31, 1985Date of Patent: July 7, 1987Assignees: Maxwell Victor Lane, George KaddisInventor: Richard L. Lewellin
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Patent number: 4673509Abstract: 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: GrantFiled: August 27, 1984Date of Patent: June 16, 1987Assignee: Albright & Wilson LimitedInventors: Keith P. Davis, Robert E. Talbot
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Patent number: 4597940Abstract: 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: GrantFiled: February 5, 1985Date of Patent: July 1, 1986Inventor: Bror O. Hager
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Patent number: 4595691Abstract: 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: GrantFiled: July 22, 1985Date of Patent: June 17, 1986Assignee: Nalco Chemical CompanyInventors: Thomas M. LaMarre, Cynthia H. Martin, Madelynn T. Wilharm
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Patent number: 4560619Abstract: 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: GrantFiled: September 15, 1983Date of Patent: December 24, 1985Assignee: Nippon Tensaiseito Kabushiki KaishaInventor: Yasutsugu Yamada
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Patent number: 4559103Abstract: 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: GrantFiled: July 28, 1983Date of Patent: December 17, 1985Assignee: Honshu Seishi Kabushiki KaishaInventors: Yoshika Nomura, Susumu Sano, Sadahiro Shoji
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Patent number: 4539071Abstract: 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: GrantFiled: April 18, 1983Date of Patent: September 3, 1985Assignee: Dearborn Chemicals LimitedInventors: Richard P. Clifford, Gerrard A. Birchall
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Patent number: 4533435Abstract: 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: GrantFiled: June 7, 1984Date of Patent: August 6, 1985Assignee: Microban Products CompanyInventor: Henry S. Intili
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Patent number: 4532007Abstract: 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: GrantFiled: May 20, 1983Date of Patent: July 30, 1985Assignees: Holmens Bruk Aktiebolag, L'Air Liquide S.A. pour l'Etude et Exploitation des Procedes Georges ClaudeInventor: Per-Olle Noren
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Patent number: 4518610Abstract: 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: GrantFiled: December 3, 1981Date of Patent: May 21, 1985Assignees: Katayama Chemical Works Co., Ltd., Yoshitomi Pharmaceutical Industries, Ltd.Inventors: Osamu Umekawa, Sakae Katayama
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Patent number: 4479820Abstract: 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: GrantFiled: February 8, 1983Date of Patent: October 30, 1984Assignee: Degussa AkteingesellschaftInventors: Wolfgang Merk, Karl-Heinz Rink
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Patent number: 4478683Abstract: 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: GrantFiled: September 27, 1982Date of Patent: October 23, 1984Assignee: Westvaco CorporationInventor: Steve A. Orndorff
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Patent number: 4466975Abstract: 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: GrantFiled: April 2, 1982Date of Patent: August 21, 1984Assignees: Yoshitomi Pharmaceutical Industries, Ltd., Katayama Chemical Works Co., Ltd.Inventors: Masato Magami, Toshio Sato, Sakae Katayama, Osamu Umekawa
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Patent number: 4462820Abstract: 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: GrantFiled: November 1, 1982Date of Patent: July 31, 1984Assignee: Ciba-Geigy CorporationInventors: Reinhardt Grade, Joachim Lorenz
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Patent number: 4451376Abstract: 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: GrantFiled: July 28, 1983Date of Patent: May 29, 1984Assignee: Nalco Chemical CompanyInventor: John D. Sharp
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Patent number: 4370199Abstract: 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: GrantFiled: November 9, 1981Date of Patent: January 25, 1983Assignee: Westvaco CorporationInventor: Steve A. Orndorff
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Patent number: 4339453Abstract: 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: GrantFiled: July 23, 1979Date of Patent: July 13, 1982Assignee: Merck & Co., Inc.Inventors: Nathaniel Grier, Elbert E. Harris, Henry Joshua, Arthur A. Patchett, Bruce E. Witzel, Richard A. Dybas
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Patent number: 4337117Abstract: 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: GrantFiled: August 13, 1980Date of Patent: June 29, 1982Assignee: Texon Inc.Inventors: Warren J. Bodendorf, Alphonse R. Presto
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Patent number: 4334957Abstract: 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: GrantFiled: July 29, 1980Date of Patent: June 15, 1982Assignees: Katayama Chemical Works Co. Ltd., Yoshitomi Pharmaceutical Industries Ltd.Inventors: Sakae Katayama, Osamu Umekawa
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Patent number: 4315798Abstract: 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: GrantFiled: August 13, 1980Date of Patent: February 16, 1982Assignee: Texon Inc.Inventor: Warren J. Bodendorf
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Patent number: 4295932Abstract: 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: GrantFiled: July 14, 1980Date of Patent: October 20, 1981Assignee: Naloc Chemical CompanyInventor: Frances C. Pocius
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Patent number: 4293559Abstract: 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: GrantFiled: March 29, 1978Date of Patent: October 6, 1981Assignee: Buckman Laboratories, Inc.Inventors: John D. Buckman, Stanley J. Buckman, Betty S. Johnson, John D. Pera
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Patent number: 4290846Abstract: 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: GrantFiled: July 30, 1979Date of Patent: September 22, 1981Assignee: Ciba-Geigy CorporationInventor: Rene Muntwyler
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Patent number: 4289581Abstract: 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: GrantFiled: March 23, 1979Date of Patent: September 15, 1981Assignee: Katayama Chemical Works Co., Ltd.Inventors: Sakae Katayama, Osamu Umekawa
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Patent number: 4285765Abstract: 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: GrantFiled: September 24, 1980Date of Patent: August 25, 1981Assignee: Buckman Laboratories, Inc.Inventors: John D. Pera, Betty S. Johnson
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Patent number: 4248685Abstract: 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: GrantFiled: May 19, 1978Date of Patent: February 3, 1981Assignee: Johnson & JohnsonInventors: Charles H. Beede, Harold L. Waldman, Theodore Blumig
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Patent number: 4245689Abstract: 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: GrantFiled: May 2, 1978Date of Patent: January 20, 1981Assignee: Georgia Bonded Fibers, Inc.Inventors: Henry P. Grard, Daniel LaVietes, Edmond M. Mergelsberg
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Patent number: 4217363Abstract: 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: GrantFiled: August 17, 1978Date of Patent: August 12, 1980Assignees: Givaudan Corporation, Hoffmann-La Roche Inc.Inventors: Harold A. Brandman, Milton Manowitz, David L. Coffen
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Patent number: 4199322Abstract: 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: GrantFiled: December 28, 1978Date of Patent: April 22, 1980Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Gary F. Danna, Tyrone L. Vigo, Clark M. Welch
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Patent number: 4120686Abstract: 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: GrantFiled: June 2, 1976Date of Patent: October 17, 1978Assignee: Bayer AktiengesellschaftInventors: Wilfried Paulus, Hermann Genth
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Patent number: 4119537Abstract: 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: GrantFiled: April 29, 1977Date of Patent: October 10, 1978Inventor: Hershel Finkelstein
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Patent number: 4105431Abstract: 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: GrantFiled: June 8, 1973Date of Patent: August 8, 1978Assignee: Rohm and Haas CompanyInventors: Sheldon N. Lewis, George A. Miller, Andrew B. Law
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Patent number: 4102707Abstract: 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: GrantFiled: June 10, 1976Date of Patent: July 25, 1978Assignee: Betz Laboratories, Inc.Inventor: K. Robert Lange
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Patent number: 4101654Abstract: 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: GrantFiled: April 4, 1977Date of Patent: July 18, 1978Assignee: Petrolite CorporationInventor: Derek Redmore
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Patent number: 4081267Abstract: 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: GrantFiled: January 15, 1976Date of Patent: March 28, 1978Assignee: Sumitomo Chemical Company, LimitedInventors: Shunichi Hashimoto, Osamu Kirino, Toshiaki Ozaki, Norihisa Yamashita
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Patent number: 4065387Abstract: 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: GrantFiled: May 5, 1976Date of Patent: December 27, 1977Assignee: Kurita Water Industries, Ltd.Inventors: Takao Tsuneki, Norio Takahashi, Hirohisa Tashiro
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Patent number: 4061775Abstract: 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: GrantFiled: September 2, 1975Date of Patent: December 6, 1977Assignee: Merck & Co., Inc.Inventors: Richard A. Dybas, Nathaniel Grier, Bruce E. Witzel
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Patent number: 4055467Abstract: 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: GrantFiled: December 20, 1976Date of Patent: October 25, 1977Assignee: Nalco Chemical CompanyInventors: Ronald J. Christensen, George J. Zivtins
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Patent number: 4052258Abstract: Dibromonitromethyl methyl sulfone is effective as a slimicide at a concentration of about 100 parts per million.Type: GrantFiled: June 24, 1976Date of Patent: October 4, 1977Assignee: The Dow Chemical CompanyInventors: Christian T. Goralski, Thomas C. Klingler, Paul A. Wolf
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Patent number: 4049417Abstract: 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: GrantFiled: March 8, 1976Date of Patent: September 20, 1977Assignee: Merck & Co., Inc.Inventors: Bruce E. Witzel, Nathaniel Grier, Richard A. Dybas, Robert A. Strelitz
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Patent number: 4045244Abstract: 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: GrantFiled: May 5, 1976Date of Patent: August 30, 1977Assignee: Betz Laboratories, Inc.Inventor: K. Robert Lange
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Patent number: 4031241Abstract: Compounds having the formula ##STR1## in which R is hydrogen or ##STR2## AS SLIME CONTROL AGENTS.Type: GrantFiled: May 8, 1975Date of Patent: June 21, 1977Assignee: Stauffer Chemical CompanyInventor: Don R. Baker
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Patent number: 4022605Abstract: 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: GrantFiled: June 25, 1975Date of Patent: May 10, 1977Assignee: Kumiai Chemical Industry Co., Ltd.Inventors: Kazumi Konya, Yoshihiro Konagai, Makoto Muto, Hironari Sato, Yoshio Takahashi
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Method of controlling slime during paper manufacture using alpha-chloro-acylbenzaldoxime derivatives
Patent number: 4018645Abstract: 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: GrantFiled: April 24, 1975Date of Patent: April 19, 1977Assignee: Somar Manufacturing Co., Ltd.Inventors: Nobuyasu Takahashi, Taiichi Yamaguchi, Junei Sakaguchi, Hideo Hamada -
Patent number: 4010277Abstract: 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: GrantFiled: February 13, 1976Date of Patent: March 1, 1977Assignee: Betz Laboratories, Inc.Inventors: Paul Swered, Mary Anne Girard
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Patent number: 3994772Abstract: 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: GrantFiled: October 23, 1975Date of Patent: November 30, 1976Assignee: Betz Laboratories, Inc.Inventors: Paul Swered, Daniel B. Ellis
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Patent number: RE29770Abstract: 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: GrantFiled: August 15, 1977Date of Patent: September 19, 1978Assignees: Isorel S.A., Stig Daniel SelanderInventors: Stig Daniel Selander, Bernard Marechal, Corrado D'Andrea
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Patent number: RE29826Abstract: 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: GrantFiled: October 5, 1977Date of Patent: November 7, 1978Assignee: Kumiai Chemical Industry Co., Ltd.Inventors: Kazumi Konya, Yoshihiro Konagai, Makoto Muto, Hironari Sato, Yoshio Takahashi