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99 results about "Chlorous acid" patented technology
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Chlorous acid is an inorganic compound with the formula HClO₂. It is a weak acid. Chlorine has oxidation state +3 in this acid. Although the acid is difficult to obtain in pure substance, the conjugate base, chlorite, derived from this acid is stable. One example of a salt of this anion is the well-known sodium chlorite. This and related salts are sometimes used in the production of chlorine dioxide.
Stabilized chlorine dioxide disinfection solution and its preparation method
The invention discloses a stabilized chlorine dioxide disinfection solution and its preparation method. The disinfection solution is composed of component A and component B, wherein component A is stabilized sodium chlorite solution consisting of chlorite, a stabilizing agent, a complexing agent, a pH stabilizing agent, and the balance a pH conditioning agent and water; component B is an activating agent, which can be at least one of citric acid and hydrochloric acid. The product of the invention has the advantages of stability, long shelf-life, and a validity period up to 2 years, and can be used as a disinfectant. The disinfection solution of the invention has simple process and convenient usage. In the invention, the original mode of pH value adjusting by acid is changed, and zinc chloride and zinc acetate are employed to remove sodium hydroxide in raw materials and reach the purpose of pH value adjusting. Simultaneously, zinc acetate and sodium hydroxide generate no amphoteric substance, and the actual operation is easier.
Owner:GUANGDONG HUANKAI MICROBIAL SCI & TECH
Acidic aqueous chlorite teat dip with improved visual indicator stability, extended shelf life, sanitizing capacity and tissue protection
InactiveUS6699510B2Enhanced softening and smoothing and characterImmobilizes mastitis treatmentAntibacterial agentsBiocideChlorine dioxideTissue protection
The mastitis control teat dip composition having a visible indicator aspect of the invention provides a softening, soothing, smoothing, relaxing property, a rapid initial kill, a useful highly pseudoplastic rheology, a barrier / film-forming capacity, a unique antimicrobial composition that is stable over an extended period of time, and unexpected long term microbial control when compared to the prior art materials disclosed in patents and used in the marketplace. The indicator aspect provides ease of visually detecting the material on the animal skin and can indicate efficacy of the material. The compositions of the invention are made by combining an aqueous liquid composition containing the visual indicator combined with the organic components which can be combined with a simple aqueous solution of a salt of chlorous acid, preferably an alkali metal chlorite. The materials after they are combined and blended into a smooth viscous material containing an emollient package generates active antimicrobial chlorine dioxide and can be immediately contacted with the target animals. The compositions of the invention provide stable visual indication, rapid initial kill, consistent long term kill with chemical and rheological stability.
Owner:ECOLAB USA INC
Processes for producing an aqueous solution containing chlorine dioxide
InactiveUS20060280673A1Catalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsChlorine dioxideChlorous acid
A process for producing chlorine dioxide comprises flowing an aqueous acidified chlorite salt solution of into a catalyst element, wherein the catalyst element comprises an aluminosilicate hydrogel-bonded porous ceramic support defining a plurality of tortuous pathways and catalyst particles and / or catalytic sites disposed on surfaces defining the tortuous pathways; and contacting the aqueous solution of chlorous acid with the catalyst particles and / or catalytic sites to form chlorine dioxide in the aqueous solution.
Owner:EASTERN PLASTICS +1
Method and Apparatus For Producing Sterile Water Containing Hypochlorus or Chlorous Acid As a Major Component
InactiveUS20080017588A1Stable pH valueStable valueWater treatment parameter controlLavatory sanitoryGas phaseEngineering
Carbon dioxide is supplied from a carbon dioxide cylinder (15) to a pressure vessel (13) through reducing valves (18 and 19). The pressure vessel (13) is also supplied with a sodium hypochlorite water solution having a desired concentration through a material supply pipe (12). The material supply pipe (12) is connected to first and second branch pipes (100 and 101) through a distribution valve (102). The sodium hypochlorite water solution supplied through the material supply pipe (12) is partially sprinkled to a gas-phase region in the pressure vessel (13) through the first branch pipe 100, while the remainder of the sodium hypochlorite water solution is supplied to a liquid-phase region in the pressure vessel (13) through the second branch pipe (101). The pressure vessel (13) is provided with a liquid level retention mechanism (25 to 29) is provided to retain the liquid level in the pressure vessel (13) within a constant range. Sterile water produced in the pressure vessel (13) is delivered through a discharge pipe (31) incorporating a throttle valve (42). The pH value of the sterile water is detected by a pH sensor, and the distribution valve (102) is controlled until the detected pH value coincides with an intended pH value.
Owner:VEETA
Disinfecting, deodorizing and fresh-keeping apparatus, method for preparing chlorine dioxide antistaling agent
InactiveCN101428149ALong validity periodAchieve disinfectionChlorine oxidesFood preservationPreservativeEngineering
The invention discloses a disinfection deodorization preservation device to achieve the purpose of disinfection and deodorization by utilizing chlorine dioxide and a method for preparing a chlorine dioxide preservative therefore. The device has the advantage of releasing chlorine dioxide continuously and slowly into a space to serve the purpose of the disinfection and deodorization of the space. The disinfection deodorization preservation device comprises a container cover body and a liquid storage container formed by the container body; the container cover body is connected with the container body; and a permeable material layer which allows the accommodating chamber of the container body to be communicated with the exterior atmosphere is arranged on the liquid storage container. The method of using the device to prepare the chlorine dioxide preservative comprises the follow steps: a, the container body is loaded with either sodium chlorite solution or acidic activating agent, and an inner layer liquid storage chamber is loaded with either sodium chlorite solution or acidic activating agent, except that with which the container body is loaded; and b, liquid in the inner layer liquid storage chamber reacts with liquid in the container body, and chlorine dioxide produced by the reaction is sent out through the permeable material layer. The invention can achieve the purposes of lasting and continuous disinfection and deodorization.
Owner:穆超银
Process for producing sterile water containing hypochlorous acid or chlorous acid as its main component and apparatus therefor
InactiveCN101124169AWater/sewage treatment by electrochemical methodsWater/sewage treatment using germicide/oligodynamic-processGas phaseGas cylinder
Carbon dioxide gas is drawn out from carbon dioxide storing steel cylinder (15), decompressed by means of decompression valves (18,19) and fed into pressure vessel (13). A desirable-concentration aqueous solution of sodium hypochlorite is fed through raw material supply pipe (12) into the pressure vessel (13). The raw material supply pipe (12) is connected via distribution valve (102) to first branch pipe (100) and second branch pipe (101). The aqueous solution of sodium hypochlorite passing through the raw material supply pipe (12) is partly fed through the first branch pipe (100) and sprayed into a vapor phase region of the pressure vessel (13). The rest thereof is fed through the second branch pipe (101) into a liquid phase region of the pressure vessel (13). The pressure vessel (13) is provided with water level maintaining means (25-29) so that the water level is maintained within given range. The sterile water produced in the pressure vessel (13) is drawn out through discharge pipe (31) having aperture diaphragm (42). The pH value of the sterile water is detected by means of a pH sensor, and the distribution valve (102) is controlled so that the detected pH agrees with the desired pH.
Owner:VEETA
Acidic aqueous chlorite teat dip with improved visual indicator stability, extended shelf life, sanitizing capacity and tissue protection
InactiveUS20030206971A1Reduce wasteReducing costly disposalUltrasonic/sonic/infrasonic diagnosticsAntibacterial agentsChlorine dioxideTissue protection
The mastitis control teat dip composition having a visible indicator aspect of the invention provides a softening, soothing, smoothing, relaxing property, a rapid initial kill, a useful highly pseudoplastic rheology, a barrier / film-forming capacity, a unique antimicrobial composition that is stable over an extended period of time, and unexpected long term microbial control when compared to the prior art materials disclosed in patents and used in the marketplace. The indicator aspect provides ease of visually detecting the material on the animal skin and can indicate efficacy of the material. The compositions of the invention are made by combining an aqueous liquid composition containing the visual indicator combined with the organic components which can be combined with a simple aqueous solution of a salt of chlorous acid, preferably an alkali metal chlorite. The materials after they are combined and blended into a smooth viscous material containing an emollient package generates active antimicrobial chlorine dioxide and can be immediately contacted with the target animals. The compositions of the invention provide stable visual indication, rapid initial kill, consistent long term kill with chemical and rheological stability.
Owner:ECOLAB USA INC
Technology for efficiently removing NOx pollutants in smoke
InactiveCN103203166AHigh oxidation absorption effectConvenient sourceDispersed particle separationAir quality improvementCalcium hydroxideSulfite salt
The invention provides a denitration technology for efficiently removing NOx in a smoke. The technology comprises the following steps: oxidizing NOx in the smoke by adopting a sodium chlorite solution as an oxidant, and processing NOx in the smoke by using a sodium sulfite solution as an absorbent to realize a removal rate of above 75%. The absorbent is prepared through reacting sulfur dioxide in the smoke with sodium hydroxide, and a solution subjected to absorption reacts with calcium hydroxide to generate a sodium hydroxide solution which can be used for afresh preparing the absorbent. The technology well reduces the NOx absorption cost, and is a smoke denitration technology having the advantages of high efficiency and low cost.
Owner:BEIJING UNIV OF CHEM TECH
Process for production of ketomalonic acid compounds or hydrates thereof
ActiveUS20120004443A1Readily availableSafe and easily availableOrganic compound preparationCarboxylic acid esters preparationMalonic acidChlorous acid
Disclosed is a process for the production of ketomalonic acid compounds or hydrates thereof by reacting a malonic acid compound with one or more chlorous acid compounds selected from among chlorous acid and chlorites and thus oxidizing the methylene group of the malonic acid compound. The process does not necessitate highly toxic reagents, lowly safe reagents, special reactants, special reaction equipment, expensive reagents, expensive catalysts, or transition metals such as noble metals, and permits the selection of mild reaction conditions and simple operation, thus enabling efficient and easy production of ketomalonic acid compounds such as ketomalonic diesters under simple and easy conditions suitable for industrialization.
Owner:IHARA CHEM IND CO LTD
Methods for making chlorous acid and chlorine dioxide
Chlorous acid is generated from a chlorite salt precursor, a chlorate salt precursor, or a combination of both by ion exchange. The ion exchange material facilitates the generation of chlorous acid by simultaneously removing unwanted cations from solution and adding hydrogen ion to solution. Chlorine dioxide is generated in a controlled manner from chlorous acid by catalysis. Chlorine dioxide can be generated either subsequent to the generation of chlorous acid or simultaneously with the generation of chlorous acid. For catalysis of chlorous acid to chlorine dioxide, the chlorous acid may be generated by ion exchange or in a conventional manner. Ion exchange materials are also used to purify the chlorous acid and chlorine dioxide solutions, without causing degradation of said solutions, to exchange undesirable ions in the chlorous acid and chlorine dioxide solutions with desirable ions, such as stabilizing ions, and to adjust the pH of chlorous acid and chlorine dioxide solutions.
Owner:SAMPSON ALLISON H +1
Methods for making chlorous acid and chlorine dioxide
Owner:ALLISON H SAMPSON +1
Method for optimizing the efficacy of chlorous acid disinfecting sprays for poultry and other meats
InactiveCN1279584AEnhanced effectiveness in destroying microbes on surfacesExtended Commercial Shelf LifeMeat/fish preservation using liquidsMeat/fish preservation using chemicalsChlorous acidCHLORITE ION
A method for disinfecting a meat carcass by spray application of an aqueous solution containing from about 0.05-0.12% of a metal chlorite and a sufficient quantity of an acid having a pKa of from about 2.0-4.4 to adjust the pH of the aqueous solution to about 2.2-4.5 and to maintain the chlorite ion concentration in the form of chlorous acid to not more than about 35% by weight of the aqueous solution, the molar ratio of the acid to metal chlorite being at least equal to the first pKa of the acid multiplied by the grams / liter concentration of metal chlorite in the aqueous solution. In one embodiment, the meat carcass is poultry.
Owner:ALCIDE CORP
Method for reducing pathogens in the gastrointestinal tract of poultry and other food animals
ActiveUS20060024405A1Reduce decreaseReduce pathogensAntibacterial agentsBiocideMicroorganismChlorous acid
A method for reducing pathogens in the gastrointestinal tract of a live animal comprising orally administering to the animal an effective amount of an aqueous antimicrobial solution, wherein the aqueous antimicrobial solution comprises from about 0.01% to about 0.1% by weight of a metal chlorite and a sufficient quantity of an acid having a first pKa of from about 2.0 to about 4.4 to adjust the pH of the aqueous antimicrobial solution to about 2.2 to about 4.5 and to maintain the chlorite ion concentration in the form of chlorous acid to not more than about 35% by weight of the total chlorite ion present in the aqueous antimicrobial solution, is disclosed.
Owner:ECOLAB USA INC
Method of cleaning and maintaining a membrane used with an aqueous stream
InactiveUS20080149570A1Extension of timeAvoid short flowSemi-permeable membranesMembranesChlorous acidFiltration
This invention is a method for cleaning and maintaining a membrane filtration element / system used in a continuous feed stream wherein an oxidizing agent that does not cause membrane damage is used as a cleaning agent. The cleaning agent used to maintain and clean the membrane is a biocide that is preferably an oxy-chloro species and most preferably a stable chlorous acid.
Owner:ECOLAB USA INC
Preparation method of sodium chlorite
InactiveCN103159178AThe reaction process is easy to controlNo reactionChlorous acidSodium chlorateChlorous acid
The invention discloses a preparation method of sodium chlorite. The preparation method comprises the following steps of (1) enabling sodium chlorate solution to react with hydrochloric acid to generate chlorine dioxide gas and chlorine; (2) leading chlorine dioxide gas and chlorine into sodium chlorite solution to further react, so as to generate chlorine dioxide gas; (3) leading the chlorine dioxide gas into sodium hydroxide solution, and adding hydrogen peroxide to react, so as to generate sodium chlorite at the same time; (4) crystallizing and drying sodium chlorite prepared in the step (3) to obtain a final product, wherein the concentration of the sodium chlorate solution in the step (1) is 25-33%, the concentration of hydrochloric acid solution in the step (1) is 31%, and the molar ratio of the hydrochloric acid to chlorous acid in the step (1) is (1-1.5) to 2. The preparation method of sodium chlorite disclosed by the invention does not utilize concentrated sulfuric acid of which the concentration is over 95%, is easy in control of the reaction process, not drastic in reaction, higher in safety coefficient, low in cost, and suitable for industrial large-scale application at the same time.
Owner:常州和方环保科技有限公司
Regenerated solution of alkaline copper etching solution and method for increasing etching speed thereof
The invention provides a regenerated solution of alkaline copper etching solution and a method for increasing the etching speed thereof. The regenerated solution of alkaline copper etching solution contains a first accelerating agent and a second accelerating agent, wherein the first accelerating agent contains an organic thio-acid compound with a NH2-CS-NH-group, and the second accelerating agent is selected from at least one of a chlorition compound and a perboric acid ion compound. According to the method for increasing the etching speed of the regenerated solution of alkaline copper etching solution, an effective amount of second accelerating agent is added to the regenerated solution of alkaline copper etching solution, wherein the second accelerating agent is selected from at least one of the chlorition compound and the perboric acid ion compound. The regenerated solution of alkaline copper etching solution provided by the invention can effectively improve the etching speed of the alkaline etching solution, and can keep the etching speed stable, thereby prolonging the service life of the etching regenerated solution.
Owner:SHENZHEN JECH TECH
Treatment method for adjusting color difference of wood veneer
ActiveCN113334515AReduce corrosionHigh whitenessWood treatment detailsWood impregnation detailsHigh concentrationWood veneer
The invention provides a treatment method for adjusting color difference of a wood veneer. The method comprises the steps of buffer solution preparation, color matching, post-treatment and the like, wherein a toner is a sodium chlorite solution with the mass fraction of 1.0-3.0%, the mass ratio of the buffer solution to the toner is (5-15): 1, and in the color matching process, the pH value of the solution is controlled to be 4-6. According to the method for toning the wood veneer by using the toner with the chlorous acid as the main component in the acidic buffer solution, chromophoric groups and auxochrome groups of lignin can be effectively destroyed, and compared with a traditional method for bleaching wood by using high-concentration hydrogen peroxide, the corrosion condition of the surface of the toner wood veneer can be better retarded, the whiteness of the wood veneer is improved and the color difference of the veneer is reduced while the original texture of the wood is not influenced.
Owner:ZHEJIANG FORESTRY UNIVERSITY
Long-term preservation and novel application of chlorous acid aqueous solution formulation
InactiveUS20160113285A1Raise the potentialExtensive in practiceAntibacterial agentsBiocidePhosphateChlorous acid
The present invention provides a technique enabling long-term preservation of a chlorous acid aqueous solution and novel application thereof. A sterilizing agent comprising an aqueous solution comprising chlorous acid (chlorous acid aqueous solution), which is used as a sterilizing agent, comprises a chlorous acid aqueous solution, metal hydroxide, and metal phosphate. Preferably, an agent in which potassium is the metal and / or pH is 3.5 or higher and less than 7.0 is prepared, whereby an unexpected long-term stabilizing effect was demonstrated. Further, the present invention provides: a sterilizing agent for preventing secondary contamination, comprising a chlorous acid aqueous solution, or an article impregnated with a chlorous acid aqueous solution for preventing secondary contamination; an article impregnated with a chlorous acid aqueous solution for sterilizing a floor surface; an agent for removing odor comprising a chlorous acid aqueous solution or an article impregnated with a chlorous acid aqueous solution for removing odor; and an agent for removing microbes adhering to the body, comprising a chlorous acid aqueous solution or an article impregnated with a chlorous acid aqueous solution for removing body adhering microbes.
Owner:HONBU SANKEI
Chlorine dioxide disinfectant special for livestock and poultry and preparation method thereof
InactiveCN111066815AStrong oxidation and sterilization abilityImprove stabilityBiocideDisinfectantsBiotechnologyHydrogen Sulfate
The invention discloses a chlorine dioxide disinfectant special for livestock and poultry, which belongs to the technical field of disinfection. The product is prepared from the following raw materials in parts by weight: chlorite, monopersulfate, an acidifying agent, bromide salt, a stable forming agent and a drying agent. The chlorite is at least one of alkali metal salt of chlorite and alkalineearth metal salt of chlorite; the acidifying agent is at least one of sodium hydrogen sulfate, sodium bicarbonate, potassium bicarbonate and boric acid; wherein the bromide salt is selected from at least one of sodium bromide, lithium bromide, potassium bromide, calcium bromide, magnesium bromide, ammonium bromide and aluminum bromide; wherein the stable forming agent comprises at least one of sodium sulfate, magnesium sulfate, magnesium hydroxide, sodium chloride and magnesium chloride; and the drying agent is at least one of calcium chloride, calcium sulfate and calcium stearate. The invention also provides a preparation method of the disinfectant. The disinfectant does not generate substances such as chloroform and cyanuric acid in the activation process, so that the disinfectant is suitable for occasions such as livestock and poultry breeding.
Owner:CHENGDU MINSHENG DISINFECTANT
Methods and compositions for on-demand release of ClO2 gas from UV-activated chlorite ion
Compositions and methods for generating ClO2 gas are disclosed. A composition that includes a chlorite salt is activated by exposure to ultraviolet light. After an optional storage period, the composition is then exposed to moisture, resulting in the generation of ClO2 gas. Exemplary compositions include polymers in which the chlorite salt is dispersed. The polymers may be used to form films thatcan be used to package, e.g., food products, pharmaceutical products, medical devices, and / or laboratory devices. Upon exposure to ultraviolet light and moisture, the packaging releases controlled quantities of ClO2 gas, which may disinfect and / or deodorize the packaged device or product.
Owner:WISCONSIN ALUMNI RES FOUND +1
Method for preparing high-purity chlorine dioxide and sodium chlorite by ferrous sulfide method
InactiveCN102674256AHigh purityGenerate fastChlorine oxidesChlorous acidSodium chlorateChlorous acid
The invention discloses a method for preparing high-purity chlorine dioxide and sodium chlorite by a ferrous sulfate method. The method comprises the following steps of: crushing ferrous sulfide; dissolving sodium chlorate into water to obtain sodium chlorate solution; diluting concentrated sulfuric acid by adding water, adding the diluted sulfuric acid into the sodium chlorate solution and uniformly mixing the solution; adding the mixed solution into ferrous sulfide powder; performing reduction reaction when stirring to produce high-purity chlorine dioxide gas; and inputting the gas into mixed absorption liquid consisting of hydrogen peroxide and sodium hydroxide, and thus obtaining the high-purity sodium chlorite solution, wherein the purity of the high-purity sodium chlorite solution is larger than 98 percent. According to the method, due to the adoption of the ferrous sulfide, the chlorine dioxide is obtained by the one-step reaction, and the sodium chlorite can be obtained by the two-step reaction; the conversion rate is up to more than 97 percent, the purity of the obtained chlorine dioxide and sodium chlorite is high, and the method has a simple production process and low cost, and is easy to industrialize.
Owner:SOUTH CHINA UNIV OF TECH
Method for reducing pathogens in the gastrointestinal tract of poultry and other food animals
Owner:ECOLAB USA INC
Long-term preservation and novel application of chlorous acid aqueous solution formulation
InactiveCN105228655AIncreased potential for widespread useAntibacterial agentsBiocideChlorous acidPhosphate
The present invention provides a technique enabling long-term preservation of a chlorous acid aqueous solution and novel application thereof. A sterilizing agent comprising an aqueous solution comprising chlorous acid (chlorous acid aqueous solution), which is used as a sterilizing agent, comprises a chlorous acid aqueous solution, metal hydroxide, and metal phosphate. Preferably, an agent in which potassium is the metal and / or pH is 3.5 or higher and less than 7.0 is prepared, whereby an unexpected long-term stabilizing effect was demonstrated. Further, the present invention provides: a sterilizing agent for preventing secondary contamination, comprising a chlorous acid aqueous solution, or an article impregnated with a chlorous acid aqueous solution for preventing secondary contamination; an article impregnated with a chlorous acid aqueous solution for sterilizing a floor surface; an agent for removing odor comprising a chlorous acid aqueous solution or an article impregnated with a chlorous acid aqueous solution for removing odor; and an agent for removing microbes adhering to the body, comprising a chlorous acid aqueous solution or an article impregnated with a chlorous acid aqueous solution for removing body adhering microbes.
Owner:HONBU SANKEI
Method of slime control in paper pulp manufacturing process
InactiveCN104204352AAvoid decompositionAdd lessSpecific water treatment objectivesNon-macromolecular organic additionDecompositionChlorous acid
The present invention enables slime control by adding an optimal oxidant in a paper pulp manufacturing process for which the stock material is used paper, which includes a considerable amount of reducing substances and dissolved organic matter, thus preventing decomposition of inorganic chlorine bactericide and exerting high bactericidal efficacy with less of the inorganic bactericide added. An inorganic bactericide generated from hypochlorous acid (salt) and ammonium salt and chlorous acid (salt) are added to an aqueous system for a paper pulp manufacturing process for which the stock material is used paper. The inorganic bactericide generated from hypochlorous acid (salt) and ammonium salt is added after the chlorous acid (salt) has been added. Alternatively, the chlorous acid (salt) is added further upstream in the manufacturing process than the addition of the inorganic bactericide generated from hypochlorous acid (salt) and ammonium salt.
Owner:KURITA WATER INDUSTRIES LTD
A kind of descaling agent for oil field water injection well and preparation method thereof
ActiveCN104046346BReduce corrosionSafe descaling operationCleaning apparatusDrilling compositionSodium acetatePotassium sodium tartrate
Owner:PETROCHINA CO LTD
Stabilized chlorine dioxide disinfection solution and preparation method thereof
Owner:GUANGDONG HUANKAI MICROBIAL SCI & TECH
Disinfecting agent and its preparing method
InactiveCN101036471AConcentration unchangedSolve the need for on-site preparationBiocideDisinfectantsChlorine dioxideDisinfectant
The invention relates to a disinfectant, which belongs to the disinfectant field, wherein, the disinfectant contains chlorine dioxide, and the concentration of chlorite is at least 0.0148mol / L. The disinfectant can be stored for three months to one year, and the concentration of chlorine dioxide in the disinfectant can be maintained in storage period, and the chlorine dioxide solution ca be used at any moment without the need to prepare it in site.
Owner:SICHUAN QILI LVYUAN WATER TREATMENT TECH CO LTD
Massive Bodies Containing Free Halogen Source For Producing Highly Converted Solutions of Chlorine Dioxide
A massive body, e.g., a tablet, for producing a thickened solution of chlorine dioxide when the massive body is added to liquid water is disclosed. The massive body comprises a metal chlorite, an acid source and a thickener (incorporated directly into the massive body or added as a component separate from the massive body) and optionally a source of free halogen. The concentration of free chlorine in the solution will be: (a) less than the concentration of chlorine dioxide in said solution on a weight basis and the ratio of the concentration of chlorine dioxide to the sum of the concentrations of chlorine dioxide and chlorite anion in said solution is at least 0.25:1 by weight; or (b) equal to or greater than the concentration of chlorine dioxide in said solution on a weight basis and the ratio of the concentration of chlorine dioxide to the sum of the concentrations of chlorine dioxide and chlorite anion in said solution is at least 0.50:1 by weight.
Owner:BASF AG
Disinfecting oral rinse compositions and process for using the same
InactiveUS20040131557A1Enhance and prolongMinimize formationCosmetic preparationsBiocideChlorous acidCHLORITE ION
This invention relates generally to compositions and methods useful for oral hygiene rinses, and more specifically to oral rinses in which the antimicrobial activity of chlorous acid is supplemented by that of lactic acid as one of a combination of antimicrobial acids, preferably acids which serve to partially convert chlorite ion to chlorous acid.
Owner:ALL USA DIRECT
Method for improving water flux of polyelectrolyte nanofiltration membrane
ActiveCN111992042AIncrease water fluxHigh retention rateSemi-permeable membranesGeneral water supply conservationElectrolyteHydrogen peroxide
The invention belongs to the technical field of water treatment membranes, and discloses a method for improving the water flux of a polyelectrolyte nanofiltration membrane, which comprises the following steps: soaking the polyelectrolyte nanofiltration membrane into an oxidizing solution; after taking out, washing the polyelectrolyte nanofiltration membrane with water to remove the residual oxidizing solution to obtain a membrane sample; wherein the polyelectrolyte nanofiltration membrane contains amido and imino and / or amido hydrochloride groups, and the oxidizing solution is at least one ofa sodium hypochlorite solution, a sodium chlorite solution and a hydrogen peroxide solution. According to the invention, the rejection rate of multivalent anionic salt and the water flux of the nanofiltration membrane can be improved at the same time, so that the application performance of the polyelectrolyte nanofiltration membrane is remarkably improved; meanwhile, the negative charge density ofthe surface of the membrane can be increased, and the electrostatic repulsion force between the surface of the membrane and the polyvalent anionic salt is improved, so that the rejection rate of thepolyelectrolyte nanofiltration membrane can still be kept or even improved after oxidation treatment.
Owner:DEZHOU UNIV
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