Patent application number | Description | Published |
20080234166 | Bleaching composition using multiple oxidizers - Composition and method for bleaching are presented. The composition includes a reactor and an oxidizing agent. The reactor includes a core that contains an oxidizer reactant and generates dioxirane, percarboxylic acid, chlorine dioxide, hydroxyl radicals, and/or N-halo-amine when contacted by a main solvent. A reactor wall surrounds the core and controls diffusion of the main solvent to the core through the pores. The reactor wall has a substantially lower solubility in the main solvent than the oxidizer reactant and the generated product such that the reactor wall remains substantially intact until generation of the product is substantially complete. The oxidizing agent is in contact with the main solvent. The oxidizing agent, which may be a hypohalite donor, chlorine dioxide donor, halo-amine donor, percarboxylic acid donor, hydroxyl radical donor, persulfate(s), or a hydrogen peroxide donor, has an order of selectivity that is different from the product generated in the reactor. | 09-25-2008 |
20090072193 | Composition and method for reducing chemical oxygen demand in water - A method and composition for reducing chemical oxygen demand is presented. The composition includes a persulfate donor and a transition metal catalyst in contact with the persulfate donor. When the composition is contacted by water, the transition metal catalyst reacts with persulfate and reduces the persulfate concentration in the water. The composition allows the use of persulfate, which is known to cause irritation to users of aquatic facilities (e.g., pools, spas) that come in contact with it. As the persulfate concentration is reduced rapidly in the water by the catalyzed reaction, the persulfate-containing cleaning product may even be used while the aquatic facilities are being used. Optionally, a free halogen donor may be incorporated into the composition. The composition may be in the form of powder, granules (coated or uncoated), or agglomerate. | 03-19-2009 |
20090145857 | Composition and process for enhanced sanitation and oxidation of aqueous systems - An efficient cyclic process and related compositions for the in-situ generation of oxyhalogens from anions of chloride, bromide and chlorite in an aqueous system using in-situ generated sulfate free radicals. The cyclic process and compositions enhance the rate of inactivation of microbiological organisms especially those resistant to inactivation from free halogen based sanitizers, and oxidation of oxidation resistant organic based compounds in aqueous solution. Aquatic facilities susceptible to accumulation of organic N-chloramines and other oxidation resistant compounds, as well as oxidation resistant parasitic organisms such as cryptosporidium and | 06-11-2009 |
20090194486 | Composition and method for reducing chemical oxygen demand in water - A method and composition for reducing chemical oxygen demand is presented. The composition includes a persulfate donor and a transition metal catalyst in contact with the persulfate donor. When the composition is contacted by water, the transition metal catalyst reacts with persulfate and reduces the persulfate concentration in the water. The composition allows the use of persulfate, which is known to cause irritation to users of aquatic facilities (e.g., pools, spas) that come in contact with it. As the persulfate concentration is reduced rapidly in the water by the catalyzed reaction, the persulfate-containing cleaning product may even be used while the aquatic facilities are being used. Optionally, a free halogen donor may be incorporated into the composition. The composition may be in the form of powder, granules (coated or uncoated), or agglomerate. | 08-06-2009 |
20090304810 | Composition and method for enhanced sanitation and oxidation of aqueous systems - Compositions and methods for their use are presented that substantially increase the rate of inactivation of microbiological organisms, especially those resistant to inactivation from free halogen based sanitizers, and oxidation of oxidation resistant organic based compounds in aqueous solution. Aquatic facilities susceptible to accumulation of organic N-chloramines, cyanuric acid and other oxidation resistant compounds, as well as oxidation resistant parasitic organisms such as cryptosporidium and Giardia, obtain dramatic improvements in the rate of oxidation and subsequent inactivation of these undesirable contaminants | 12-10-2009 |
20100136112 | Oxidizing composition including a gel layer - A composition that generates and releases a biocidal solution comprising at least chlorine dioxide is presented. The composition comprises reactants capable of in-situ generation of chlorine dioxide, and a gelling agent that slows the rate of dissolution of the reactants, thereby increasing yield and providing a controlled release of biocidal solution. The compositions of the invention show improved environmental stability which can reduce the cost of packaging. The controlled release allows the use in multi-tablet chemical dispensers which may otherwise induce potentially explosive conditions or allow rapid release of the biocidal solution thereby inducing a spike in chemical concentration rather than a sustained release. | 06-03-2010 |
20100163794 | Oxidizing composition including a gel layer - A composition that generates and releases a biocidal solution comprising at least chlorine dioxide and free halogen is presented. The composition comprises reactants capable of in-situ generation of chlorine dioxide and free halogen donor, and a gelling agent that slows the rate of dissolution of the reactants, thereby increasing yield and providing a controlled release of biocidal solution. The compositions of the invention show improved environmental stability which can reduce the cost of packaging. The controlled release allows the use in multi-tablet chemical dispensers which may otherwise induce potentially explosive conditions or allow rapid release of the biocidal solution thereby inducing a spike in chemical concentration rather than a sustained release. | 07-01-2010 |
20100178356 | Composition and method for enhanced sanitation and oxidation of aqueous systems - This invention relates to a method for enhanced sanitation and oxidation of aqueous solutions at aquatic facilities. The method provides a means for the in-situ generation of chlorine dioxide from dilute solutions of chlorite anions at near neutral pH, and enhanced inactivation rates of microbiological organisms including cryptosporidium. | 07-15-2010 |
20100181264 | Composition and method for reducing chemical oxygen demand in water - A method and composition for reducing chemical oxygen demand is presented. The composition includes a persulfate donor and a transition metal catalyst in contact with the persulfate donor. When the composition is contacted by water, the transition metal catalyst reacts with persulfate and reduces the persulfate concentration in the water. The composition allows the use of persulfate, which is known to cause irritation to users of aquatic facilities (e.g., pools, spas) that come in contact with it. As the persulfate concentration is reduced rapidly in the water by the catalyzed reaction, the persulfate-containing cleaning product may even be used while the aquatic facilities are being used. Optionally, a free halogen donor may be incorporated into the composition. The composition may be in the form of powder, granules (coated or uncoated), or agglomerate. | 07-22-2010 |
20100183693 | Slow dissolving tablet composition for the in-situ generation of chlorine dioxide for use in a multi-tablet dispenser - A composition that generates and releases a biocidal solution comprising at least chlorine dioxide is presented. The composition comprises reactants capable of in-situ generation of chlorine dioxide, and a gelling agent that slows the rate of dissolution of the reactants, thereby increasing yield and providing a controlled release of biocidal solution. The compositions of the invention show improved environmental stability which can reduce the cost of packaging. The controlled release allows the use in multi-tablet chemical dispensers which may otherwise induce potentially explosive conditions or allow rapid release of the biocidal solution thereby inducing a spike in chemical concentration rather than a sustained release. | 07-22-2010 |
20100272860 | Tablet composition for the in-situ generation of chlorine dioxide for use in antimicrobial applications - A solid composition in the form of a tablet that generates and releases a biocidal solution comprising at least chlorine dioxide with an enhanced weight percent yield is presented. The composition comprises reactants capable of in-situ generation of chlorine dioxide comprising a chlorite donor that is coated with a gel-forming material that slows the rate of dissolution of the high solubility chlorite donor, a free halogen donor, and an acid source, resulting in an unexpectedly high weight percent yield and providing a controlled release of biocidal solution. The compositions of the invention show improved environmental stability which can reduce the cost of packaging and significantly increase the utility of the composition. The controlled release allows the use in multi-tablet chemical dispensers which may otherwise induce potentially explosive conditions or allow rapid release of the biocidal solution thereby inducing a spike in chemical concentration rather than a controlled and sustained release. | 10-28-2010 |
20100323009 | Tablet composition for the in-situ generation of chlorine dioxide for use in antimicrobial applications - A solid composition in the form of a tablet that generates and releases a biocidal solution comprising at least chlorine dioxide with an enhanced weight percent yield is presented. The composition comprises reactants capable of in-situ generation of chlorine dioxide comprising a chlorite donor that is coated with a gel-forming material that slows the rate of dissolution of the high solubility chlorite donor, a free halogen donor, and an acid source, resulting in an unexpectedly high weight percent yield and providing a controlled release of biocidal solution. The compositions of the invention show improved environmental stability which can reduce the cost of packaging and significantly increase the utility of the composition. The controlled release allows the use in multi-tablet chemical dispensers which may otherwise induce potentially explosive conditions or allow rapid release of the biocidal solution thereby inducing a spike in chemical concentration rather than a controlled and sustained release. | 12-23-2010 |
20110024367 | Cyclic process for in-situ generation of chlorine dioxide in biguanide treated aquatic facilities - A method for the in-situ generation of chlorine dioxide from dilute solutions of chlorite anions for the enhanced inactivation of microbiological organisms in an aqueous solution of an aquatic facility treated with biguanide. | 02-03-2011 |
20110027330 | Tablet composition for the in-situ generation of chlorine dioxide for use in antimicrobial applications - A fast-acting solid composition in the form of a tablet that generates and releases a biocidal solution comprising at least chlorine dioxide with an enhanced weight percent yield of at least 20 wt % is presented. The composition comprises reactants capable of in-situ generation of chlorine dioxide comprising a chlorite donor that is coated with a non-hygroscopic material that enhances the environmental stability of the composition. | 02-03-2011 |
20110136661 | Non-hygroscopic stabilized catalyst for the in-situ generation of sulfate free radicals - This invention relates to methods for producing, and the resulting compositions comprising non-hygroscopic stabilized catalyst for use with peroxysulfates for the in-situ generation of sulfate free radicals in recreational water. | 06-09-2011 |
20120107418 | Method and composition for in-situ generation of chlorous acid - This invention relates to methods and compositions for producing an antimicrobial solution with a high weight percent (wt %) conversion of chlorite anion to chlorous acid and/or derivatives of chlorous acid with substantially reduced chlorite residual. Furthermore, the invention presents methods for use of the antimicrobial solution thereby substantially improving the utility and cost effectiveness of chlorous acid solutions. Furthermore, the invention further demonstrates a method for use of a novel antimicrobial solution comprising a brominated derivative of chlorous acid that has substantially reduced volatility and provides at least two different modes of oxidation. | 05-03-2012 |
20120207851 | Biocide compositions and related methods - A composition for producing a biocide solution upon contact with water, the composition comprises at least a hydrogen peroxide donor and polyoxychlorine donor. The biocide solution forms reactive oxygen species when contacted by microorganisms, proteinaceous substances, and reducible organic based contaminants. | 08-16-2012 |
20120207852 | Biocide compositions and related methods - Compositions for producing a biocide solution upon contact with water, the composition comprises at least an acid anhydride and polyoxychlorine donor. The biocide solution forms reactive oxygen species that releases oxygen gas when contacted by microorganisms, proteinaceous substances, and oxidizable organic based contaminants. The biocide solution is free of chlorine dioxide. | 08-16-2012 |
20120207858 | BIOCIDE AND BLEACH COMPOSITIONS AND RELATED METHODS - Provided are biocide compositions and bleach compositions comprising organic acyl polyoxychlorine and related methods. The reduction of the acyl polyoxychlorine group releases a reactive intermediate that undergoes a series of cascading reduction steps, resulting in termination products Generally Recognized As Safe. | 08-16-2012 |
20120208888 | Biocide compositions and related methods - The invention relates to biocide compositions comprising organic acyl polyoxychlorine and methods for producing said biocide compositions. The biocide compositions form reactive oxygen species when contacted by microorganisms, proteinaceous substances, and oxidizable organic based contaminants. | 08-16-2012 |
20120255692 | Bleach compositions and related methods - The invention relates to bleach compositions comprising organic acyl polyoxychlorine and methods for producing said bleach compositions. The bleach compositions form reactive oxygen species when contacted by chromophores. | 10-11-2012 |
20140322349 | Microbicidal composition comprising hydrogen peroxide and aminocarboxylic acids - The invention relates to a microbicidal composition comprising hydrogen peroxide, peroxycarboxylic acid, and aminocarboxylic acid. The hydrogen peroxide and peroxycarboxylic acid form associations with the aminocarboxylic acid that enhances the microbicidal efficacy of the composition. The invention further discloses methods for its use. | 10-30-2014 |
20150060370 | Chlorine dioxide generator for the efficient generation of chlorine dioxide in dilute solutions - Disclosed is an apparatus and method for the safe and efficient generation of chlorine dioxide. Chlorine dioxide is produced safely and efficiently by diluting a source of chlorite in water to produce less than or equal to 5000 ppm measured as ClO | 03-05-2015 |