US2002114856A1PendingUtilityA1

Compositions containing hops extract and their use in water systems and process streams to control biological fouling

46
Priority: Jul 18, 2000Filed: Feb 6, 2002Published: Aug 22, 2002
Est. expiryJul 18, 2020(expired)· nominal 20-yr term from priority
Inventors:Andrew J. CooperAnthony W. DallmierHoward Barnes
A01N 65/08
46
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Claims

Abstract

Biological fouling is effectively controlled in water systems and process streams through the addition of hops extract.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A method of controlling biological fouling in water systems and process streams comprising the step of adding thereto an effective amount of hops extract.  
     
     
         2 . The method of  claim 1  wherein the hops extract is added to the water system or process stream in an amount from about 0.01 ppm to about 10,000 ppm.  
     
     
         3 . The method of  claim 1  wherein the hops extract is added to the water system or process stream in an amount from about 0.05 ppm to about 50 ppm.  
     
     
         4 . The method of  claim 1  wherein the hops extract is added to the water system or process stream in an amount from about 0.1 ppm to about 10 ppm.  
     
     
         5 . The method of  claim 1  wherein the hops extract is stabilized with at least one surfactant prior to addition.  
     
     
         6 . The method of  claim 5  wherein the surfactant is selected from the group consisting of dioctyl sodium sulfosuccinate, sodium mono- and dimethyl napthalene sulfonates, N-lauroyl sarcosine sodium salt, alkyl polyglycoside and sodium dodecyl diphenyloxide disulfonate.  
     
     
         7 . The method of  claim 1  wherein an effective amount of at least one biocide is added to the water system or process stream.  
     
     
         8 . The method of  claim 7  wherein the biocide is selected from the group consisting of 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, glutaraldehyde, 2,2-dibromo-3-itrilopropionamide, 2-bromo-2-nitropropane-1,3 diol, 1-bromo-1-(bromomethyl)-1,3-propanedicarbonitrile, etrachloroisophthalonitrile, alkyldimethylbenzylammonium chloride, dimethyl dialkyl ammonium chloride, poly(oxyethylene(dimethyliminio)ethylene(diemethyliminio)ethylene dichloride, methylene bisthiocyanate, 2-decylthioethanamine, tetrakishydroxymethyl phosphonium sulfate, dithiocarbamate, yanodithioimidocarbonate, 2-methyl-5-nitroimidazole-1-ethanol, 2-(2-bromo-2-nitroethenyl)furan, beta-bromo-beta-nitrostyrene, beta-nitrostyrene, beta-nitrovinyl furan, 2-bromo-2-bromomethyl glutaronitrile, bis(trichloromethyl) sulfone, S-(2-hydroxypropyl)thiomethanesulfonate, tetrahydro-3,5-dimethyl-2H-1,3,5-hydrazine-2-thione, 2-(thiocyanomethylthio)benzothiazole, 2-bromo-4′-hydroxyacetophenone, 1,4-bis(bromoacetoxy)-2-butene, bis(tributyltin)oxide, copper sulfate, (2-tert-butylamino)-4-chloro-6-(ethylamino)-s-triazine, dodecylguanidine acetate, dodecylguanidine hydrochloride, coco alkyldimethylamine oxide, n-coco alkyltrimethylenediamine, tetra-alkyl phosphonium chloride, 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid, 2-(4-thiazolyl)-benzimidazole, orthophenylphenol, 6-ethoxy-1,2-dihydro-2,2,4-trimethyl quinoline and 4,5-dichloro-2-n-octyl-4-isothiazoline-3-one.  
     
     
         9 . The method of  claim 7  wherein the biocide is added to the water system or process stream in an amount from about 0.01 ppm to about 10,000 ppm.  
     
     
         10 . The method of  claim 7  wherein the biocide is added to the water system or process stream in an amount from about 0.05 ppm to about 50 ppm.  
     
     
         11 . The method of  claim 7  wherein the biocide is added to the water system or process stream in an amount from about 0.1 ppm to about 10 ppm.  
     
     
         12 . A method of controlling biological fouling in water systems and process streams comprising the step of adding thereto an effective amount of stabilized hops extract.  
     
     
         13 . The method of  claim 12  wherein the hops extract is stabilized with at least one surfactant  
     
     
         14 . The method of  claim 13  wherein the surfactant is selected from the group consisting of dioctyl sodium sulfosuccinate, sodium mono- and dimethyl napthalene sulfonates, N-lauroyl sarcosine sodium salt, alkyl polyglycoside and sodium dodecyl diphenyloxide disulfonate.  
     
     
         15 . The method of  claim 12  wherein the stabilized hops extract is added to the water system or process stream in an amount from about 0.01 ppm to about 10,000 ppm.  
     
     
         16 . The method of  claim 12  wherein the stabilized hops extract is added to the water system or process stream in an amount from about 0.05 ppm to about 50 ppm.  
     
     
         17 . The method of  claim 12  wherein the stabilized hops extract is added to the water system or process stream in an amount from about 0.1 ppm to about 10 ppm.  
     
     
         18 . The method of  claim 12  wherein an effective amount of at least one biocide is added to the water system or process stream.  
     
     
         19 . The method of  claim 18  wherein the biocide is selected from the group consisting of 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, glutaraldehyde, 2,2-dibromo-3-nitrilopropionamide, 2-bromo-2-nitropropane-1,3 diol, 1-bromo-1-(bromomethyl)-1,3-propanedicarbonitrile, tetrachloroisophthalonitrile, alkyldimethylbenzylammonium chloride, dimethyl dialkyl ammonium chloride, poly(oxyethylene(dimethyliminio)ethylene(diemethyliminio)ethylene dichloride, methylene bisthiocyanate, 2-decylthioethanamine, tetrakishydroxymethyl phosphonium sulfate, dithiocarbamate, cyanodithioimidocarbonate, 2-methyl-5-nitroimidazole-1-ethanol, 2-(2-bromo-2-nitroethenyl)furan, beta-bromo-beta-nitrostyrene, beta-nitrostyrene, beta-nitrovinyl furan, 2-bromo-2-bromomethyl glutaronitrile, bis(trichloromethyl) sulfone, S-(2-hydroxypropyl)thiomethanesulfonate, tetrahydro-3,5-dimethyl-2H-1,3,5-hydrazine-2-thione, 2-(thiocyanomethylthio)benzothiazole, 2-bromo-4′-hydroxyacetophenone, 1,4-bis(bromoacetoxy)-2-butene, bis(tributyltin)oxide, copper sulfate, (2-tert-butylamino)-4-chloro-6-(ethylamino)-s-triazine, dodecylguanidine acetate, dodecylguanidine hydrochloride, coco alkyldimethylamine oxide, n-coco alkyltrimethylenediamine, tetra-alkyl phosphonium chloride, 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid, 2-(4-thiazolyl)-benzimidazole, orthophenylphenol, 6-ethoxy-1,2-dihydro-2,2,4-trimethyl quinoline and 4,5-dichloro-2-n-octyl-4-isothiazoline-3-one.  
     
     
         20 . The method of  claim 18  wherein the biocide is added to the water system or process stream in an amount from about 0.01 ppm to about 10,000 ppm.  
     
     
         21 . The method of  claim 18  wherein the biocide is added to the water system or process stream in an amount from about 0.05 ppm to about 50 ppm.  
     
     
         22 . The method of  claim 18  wherein the biocide is added to the water system or process stream in an amount from about 0.1 ppm to about 10 ppm.  
     
     
         23 . A composition for controlling biological fouling in water systems and process streams which comprises an effective amount of hops extract and at least one biocide selected from the group consisting of 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, glutaraldehyde, 2,2-dibromo-3-nitrilopropionamide, 2-bromo-2-nitropropane-1,3 diol, 1-bromo-1-(bromomethyl)-1,3-propanedicarbonitrile, tetrachloroisophthalonitrile, alkyldimethylbenzylammonium chloride, dimethyl dialkyl ammonium chloride, poly(oxyethylene(dimethyliminio)ethylene(diemethyliminio)ethylene dichloride, methylene bisthiocyanate, 2-decylthioethanamine, tetrakishydroxymethyl phosphonium sulfate, dithiocarbamate, cyanodithioimidocarbonate, 2-methyl-5-nitroimidazole-1-ethanol, 2-(2-bromo-2-nitroethenyl)furan, beta-bromo-beta-nitrostyrene, beta-nitrostyrene, beta-nitrovinyl furan, 2-bromo-2-bromomethyl glutaronitrile, bis(trichloromethyl) sulfone, S-(2-hydroxypropyl)thiomethanesulfonate, tetrahydro-3,5-dimethyl-2H-1,3,5-hydrazine-2-thione, 2-(thiocyanomethylthio)benzothiazole, 2-bromo-4′-hydroxyacetophenone, 1,4-bis(bromoacetoxy)-2-butene, bis(tributyltin)oxide, copper sulfate, (2-tert-butylamino)-4-chloro-6-(ethylamino)-s-triazine, dodecylguanidine acetate, dodecylguanidine hydrochloride, coco alkyldimethylamine oxide, n-coco alkyltrimethylenediamine, tetra-alkyl phosphonium chloride, 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid, 2-(4-thiazolyl)-benzimidazole, orthophenylphenol, 6-ethoxy-1,2-dihydro-2,2,4-trimethyl quinoline and 4,5-dichloro-2-n-octyl-4-isothiazoline-3-one.  
     
     
         24 . The composition of  claim 23  wherein the amount of hops extract is in the range of about 0.1% to about 99% and the amount of biocide is in the range of about 0.1% to about 99%.  
     
     
         25 . A composition for controlling biological fouling in water systems and process streams which comprises an effective amount of stabilized hops extract.  
     
     
         26 . The composition of  claim 25  wherein the hops extract is stabilized with at least one surfactant.  
     
     
         27 . The composition of  claim 26  wherein the surfactant is selected from the group consisting of dioctyl sodium sulfosuccinate, sodium mono- and dimethyl napthalene sulfonates, N-lauroyl sarcosine sodium salt, alkyl polyglycoside and sodium dodecyl diphenyloxide disulfonate.  
     
     
         28 . The composition of  claim 25  further comprising an effective amount of at least one biocide.  
     
     
         29 . The composition of  claim 28  wherein the biocide is selected from the group consisting of 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, glutaraldehyde, 2,2-dibromo-3-nitrilopropionamide, 2-bromo-2-nitropropane-1,3 diol, 1-bromo-1-(bromomethyl)-1,3-propanedicarbonitrile, tetrachloroisophthalonitrile, alkyldimethylbenzylammonium chloride, dimethyl dialkyl ammonium chloride, poly(oxyethylene(dimethyliminio)ethylene(diemethyliminio)ethylene dichloride, methylene bisthiocyanate, 2-decylthioethanamine, tetrakishydroxymethyl phosphonium sulfate, dithiocarbamate, cyanodithioimidocarbonate, 2-methyl-5-nitroimidazole-1-ethanol, 2-(2-bromo-2-nitroethenyl)furan, beta-bromo-beta-nitrostyrene, beta-nitrostyrene, beta-nitrovinyl furan, 2-bromo-2-bromomethyl glutaronitrile, bis(trichloromethyl) sulfone, S-(2-hydroxypropyl)thiomethanesulfonate, tetrahydro-3,5-dimethyl-2H-1,3,5-hydrazine-2-thione, 2-(thiocyanomethylthio)benzothiazole, 2-bromo-4′-hydroxyacetophenone, 1,4-bis(bromoacetoxy)-2-butene, bis(tributyltin)oxide, copper sulfate, (2-tert-butylamino)-4-chloro-6-(ethylamino)-s-triazine, dodecylguanidine acetate, dodecylguanidine hydrochloride, coco alkyldimethylamine oxide, n-coco alkyltrimethylenediamine, tetra-alkyl phosphonium chloride, 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid, 2-(4-thiazolyl)-benzimidazole, orthophenylphenol, 6-ethoxy-1,2-dihydro-2,2,4-trimethyl quinoline and 4,5-dichloro-2-n-octyl-4-isothiazoline-3-one.  
     
     
         30 . The composition of  claim 28  wherein the amount of hops extract is in the range of about 0.1% to about 99%, the amount of biocide is in the range of about 0.1% to about 99% and the amount of surfactant is in the range of about 0.1% to about 99%.

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