957 results about "Hypochlorite" patented technology

This invention generally relates to compositions and method of producing diluted hypohalous acid and hypohalous acid vapor. These compositions can be used to treat allergen containing surfaces, hard surfaces, food contact surfaces, hospital surfaces, food surfaces, kitchen surfaces, bathroom surfaces, human surfaces, animal surfaces, children's items, outdoor surfaces, soft surfaces, and medical instruments. These compositions can be converted to solid particulate or granular compositions. These compositions can be put into a variety of containers which preserve the stability. These compositions can be used to treat allergens and molds and as part of a mold detection system. These compositions can be dispersed into the air to enable microbiological control.

A method is provided for forming silicon oxide layers during the processing of semiconductor devices by applying a SOG layer including polysilazane to a substrate and then substantially converting the SOG layer to a silicon oxide layer using an oxidant solution. The oxidant solution may include one or more oxidants including, for example, ozone, peroxides, permanganates, hypochlorites, chlorites, chlorates, perchlorates, hypobromites, bromites, bromates, hypoiodites, iodites, iodates and strong acids.

A process comprising treating a lignocellulosic material preferably pulp in the presence of a transition metal catalyst with a oxidizing agent selected from a group consisting of hydrogen peroxide, hypochlorite, hypochlorous acid and any combination thereof to form a treated lignocellulosic material having a viscosity equal to or less than about 17 cp and having reducing functional groups selected from the group consisting of aldehyde and aldehyde type functional groups at the C6 and C1 positions but predominating at the C1 position.

This invention relates to methods of diluting hypochlorite and hypochlorous acid compositions with purified water to produce stable compositions. These compositions can be used to treat allergen containing surfaces, hard surfaces, food contact surfaces, hospital surfaces, food surfaces, kitchen surfaces, bathroom surfaces, human surfaces, animal surfaces, military equipment, transportation equipment, children's items, plant surfaces, seeds, outdoor surfaces, soft surfaces, air, wounds, and medical instruments.

A system and process for de-halogenating ballast water before releasing the ballast water from the vessel. In one embodiment, the system comprises a means for measuring the halogen content of the ballast water, a reducing agent source in fluid communication with the ballast water, and a means for controlling the amount of reducing agent supplied to the ballast water. In one aspect, the means for measuring the halogen content comprises one or more oxidation / reduction potential analyzers. In another embodiment, the system comprises one or more hypochlorite electrolytic cells for generating hypochlorite to treat the ballast water.One embodiment of the process for de-halogenating ballast water comprises measuring the oxidation / reduction potential of the ballast water and adding one or more reducing agents to the ballast water to de-halogenate the ballast water in response to the measured oxidation / reduction potential. In one aspect, the oxidation / reduction potential is modulated so that excess reducing agent is present in the ballast water.

An incentive-based grocery cart washing and disinfecting system including a consumer special-offer coupon applying apparatus, for use in a batch or continuous process comprising a housing having at least one pipe manifold with nozzles positioned therein to provide at least one treatment zone selected from pre-wash, wash, disinfecting, and rinse zones. In addition, blown air water-stripping / drying zones may be provided, with a heating source to assist drying. Following drying, a strip of specially adapted grocery coupons is optionally applied to the grocery cart handle, so that the coupons can be redeemed by customers during their subsequent shopping. The housing is generally a linear tunnel permitting access of soiled carts at one end and removal of the clean, disinfected carts at the other end. A cart pusher system may be employed to transport the carts through the tunnel either singly or in nested groups. A convenient antimicrobial disinfecting solution is a water solution of hypochlorite. A single zone system is disclosed in which in a selected, optionally preprogrammed, sequence of application of pre-wash, wash, rinse, and disinfecting fluids are delivered to selected surfaces of the cart, followed by blown air, preferably heated, for stripping / drying,. The coupon strip comprises a leader portion and a coupon portion, and the leader can be wrapped and fixed around the grocery cart handle manually or by means of the automated machinery described. The system of the invention may be a fixed or mobile system, with the use preferably being on site at stores.

A threshold agent composition and methods of using the same to produce hypochlorite and other effluent streams from an electrochemical cell without the detrimental effects of hard water scaling are disclosed. The invention further discloses use of chemistries to prevent hard water scale formation in various electrochemical cells to enhance cell longevity without decreasing chlorine, hypochlorite or other effluent production.

The invention discloses a method for selectively recycling lithium from lithium iron phosphate waste through a direct oxidization method. The method is characterized by comprising the steps that the lithium iron phosphate waste is added into a water solution, meanwhile, an oxidizing agent is added, stirring is carried out, lithium iron phosphate and the oxidizing agent react to generate iron phosphate, lithium ions enter the solution, and therefore a pure lithium-containing solution and iron phosphate solids are obtained. The adopted oxidizing agent comprises one or a mixture of persulfate, ozone, oxygen, pypocholoride and hydrogen peroxide. The molar weight of the oxidizing agent is 0.6-20 times that of lithium iron phosphate. The lithium-containing solution can be directly used for preparing a high-purity lithium product. According to the method, efficient and selective leaching of lithium can be achieved simply by adding a certain amount of oxidizing agent, and the method is mild in reaction condition, short in process and simple in equipment.

A system and method for treating ballast water within an ocean going vessel by generating hypochlorite for treating the ballast water. The system comprises one or more hypochlorite electrolytic cells in fluid communication with a stream of ballast water. A chlorine analyzer is positioned downstream from the electrolytic cells to determine the chlorine concentration of the treated ballast water. A hydrogen separator is connected to the hypochlorite electrolytic cells for venting hydrogen. In the method of this invention, water is taken aboard the ship for ballast in one port. A treatment stream is separated from the ballast water stream and piped to hypochlorite electrolytic cells. Hypochlorite is generated into the treatment stream and the hydrogen byproduct is separated by the hydrogen separators. The treatment stream is then reintroduced to the ballast water to eliminate marine species and pathogenic bacteria from ballast water. The ballast water undergoes de-chlorination prior to being discharged into a new port.

The invention relates to a set of electrocatalytic strong oxidizer materials, comprising a nano-function anode material which compounds nano oxide particles and catalyzes metal nano particles on a titanium substrate, and a nano-function cathode material which takes titanium or stainless steel as a substrate and introduces transition metal nano-particles on the surface thereof. By the electro-catalytic advanced oxidation technology, under the catalytic action of electrocatalytic strong oxidizer materials, water body can generate a hydroxyl radical with strong oxidizing performance and an oxygen radical; and if a chloride ion exists in water, hypochlorite can be generated. Under the joint action of a plurality of types of strong oxidizers, the algae cells in the water body and various harmful bacteria can be killed; and simultaneously the ammonia in water and the water-soluble organic matters can be degraded, so the goal of purifying water is achieved. According to the electrocatalytic advanced oxidation theory, the electrocatalytic strong oxidizer materials does not need to add any chemical agent when in application, does not have secondary pollution, and has good safety, high efficiency and low energy consumption.

A cleaning composition with a corrosion inhibitor system and an active halogen-based bleaching system and aqueous solution is described for inhibiting corrosion of metal surfaces to which the composition is applied, especially when the cleaning composition is not rinsed from the treated metal surface prior to drying of the composition on the metal surface. The corrosion inhibitor is at least an alkyl phosphonate compound, wherein the alkyl group has 6 or more carbon atoms, and salts thereof. The bleaching system includes one or more sources of hypohalous acid or hypohalite ion, such as a stabilized hypochlorite solution, in particular a mixture of N-chlorosulfamate salts.

The invention provides an electric complex-strengthening repairing method and device of heavy metal-organic co-contaminated soil. The method provided by the invention comprises the following steps of: filling contaminated soil into an electric repairing device, and then adding an oxidant into a cathode electrolyte and an anode electrolyte or directly spraying the oxidant on the contaminated soil, wherein the oxidant comprises hydrogen peroxide, pypocholoride and persulfate; applying a direct-current electric field on a cathode and an anode, wherein the strength of the electric field is 0.5-2 V / cm; and controlling the pH values of the cathode electrolyte and the anode electrolyte to be 3-11. By selecting the suitable for oxidant and controlling the pH value of the electrolyte, the migration of the heavy metal can be effectively increased and the removing efficiency is improved; and meanwhile, the oxidant is used for effectively degrading organic pollutants when the pollutants are migrated, thereby relieving the post-treatment and simultaneously removing the heavy metal and the organic pollutants.

The present invention relates to methods of treating subterranean formations with viscosified aqueous well treating compositions which break into thin fluids at static temperatures in the range of from about 150° F. to about 200° F. A breaker system is included in the compositions comprised of an alkali metal or ammonium persulfate breaker and a breaker activity delaying agent comprised of an alkali metal chlorite or hypochlorite.

A first embodiment of the present invention is directed to an aqueous disinfectant solution comprising an alkali metal or alkaline earth metal hypochlorite, an amount of base sufficient to raise the pH of the solution to at least 12, and water. A second embodiment of the present invention is directed to a method for sterilizing medical and dental instruments and hard surfaces which comprises contacting the medical or dental instruments or hard surfaces with an aqueous disinfecting solution comprising an alkali metal or alkaline earth metal hypochlorite, an amount of a base sufficient to raise the pH of the solution to at least 12, and water, for a time sufficient to disinfect the medical or dental instruments or hard surface.

Method for whitening teeth are provided. The methods include the steps of providing a strip of material and applying a thin layer of a tooth whitening substance having a whitening active selected from the group consisting of peroxides, metal chlorites, perborates, percarbonates, peroxyacids, hypochlorites, and combinations thereof to a front surface of a plurality of teeth, wherein the amount of the tooth whitening substance is between about 0.05 grams and about 0.4 grams. The method further includes the steps of conforming the strip of material to the front surface of the plurality of teeth and removing the strip of material, wherein the front surface of the plurality of teeth have between a 1 and a 4 VITA LUMIN shade guide improvement in color.

This invention relates to dry powder forms of hypohalite, especially a dry powdered form of dilute or concentrated hypochlorite and hypochlorous acid compositions. The invention also relates to uses for these dry powders, such as for treating hard and soft inanimate surfaces, animate surfaces, air, and for deactivating allergens.

Liquid, shelf-stable alkaline cleaning compositions with chlorine bleach comprising a chlorine bleach capable of forming a hypochlorite in water, a bleach stabilizer selected from the group consisting of compounds having at least one NH— or NH2— moiety capable of reacting with the hypochlorite to form NCl—, NHCl— or NCl2— compounds, and from about 5-50% by weight of a metal hydroxide. Compositions according to the present invention are highly alkaline preferably presenting a pH of at least about 11.5. The compositions provide sustained hypochlorite bleach functionality and long term bleach stability even in the presence of surfactants. The bleach compositions are useful in cleaning and sanitizing household, institutional, and industrial hard surfaces including clean-in-place systems and food processing equipment.

A cleaning method for a semiconductor substrate is provided. After pure water is supplied to a cleaning tank, a chlorine gas is supplied to the pure water to thereby generate chloride ions, hypochlorite ions, chlorite ions, and chlorate ions in the pure water. Then, a semiconductor substrate is immersed into the pure water containing the chloride ions, hypochlorite ions, chlorite ions, and chlorate ions. The fabrication cost of a semiconductor device and adverse effects on the earth environment can be reduced. The concentration of the dissolved chlorine gas in the pure water is preferably in the range from 0.003 to 0.3% by weight.

An apparatus and method for venting hydrogen from an electrolytic cell. A brine solution is supplied to an electrolytic cell where hypochlorite and hydrogen gas are produced. A non-combustible gas is introduced into the electrolyzer containing the electrolytic cell and the concentration of hydrogen in the electrolyzer is reduced to a concentration below the LEL of hydrogen.

A method for electrolytically generating a biocide having an electron deficient carrier fluid and chlorine dioxide, including providing a carrier fluid; providing a pair of electrodes interposed by a semi-permeable membrane within a vessel for creating a first passageway and a second passageway, an anode electrode of the pair of electrodes disposed in the first passageway, cathode electrode of the pair of electrodes disposed in the second passageway; flowing the carrier fluid through the vessel; applying an electric potential to the pair of electrodes to produce an oxidative acidic fluid, a reductive alkaline fluid, and anodic gases in the container; removing the fluids and gases from the vessel; mixing a portion of the anodic gases with the reductive alkaline fluid to produce a hypochlorite solution; and mixing a chlorite brine with the hypochlorite solution, followed by the introduction of additional oxidative acidic fluid to release the biocide.

A system and process for treating ballast water within an ocean going vessel by generating hypochlorite for treating the ballast water. The system comprises one or more hypochlorite electrolytic cells in fluid communication with ballast water. The total organic carbon content of the ballast water is ascertained and the amount of hypochlorite generated is modulated in response to the total organic carbon content of the ballast water. In one embodiment the system comprises a total organic carbon analyzer for measuring total organic carbon content. In one embodiment of the process of the invention, hypochlorite production is modulated so that the residual halogen-containing oxidizing agent is maintained in the ballast water. In another embodiment of the process, hypochlorite production is modulated to maintain a weight ratio of hypochlorite to total organic carbon in the ballast water ranging from about 1.0 to about 3.0.

A process comprising treating a lignocellulosic material preferably pulp in the presence of a transition metal catalyst with a oxidizing agent selected from a group consisting of hydrogen peroxide, hypochlorite, hypochlorous acid and any combination thereof to form a treated lignocellulosic material having a viscosity equal to or less than about 17 cp and having reducing functional groups selected from the group consisting of aldehyde and aldehyde type functional groups at the C6 and C1 positions but predominating at the C1 position.

Nontoxic marine anti-fouling dope and a preparation method thereof are disclosed, belonging to technical fields of anti-fouling dope and underwater dope. The nontoxic marine anti-fouling dope contains film forming matter, nontoxic antifouling compound, dye, addition agent and water. The nontoxic antifouling compound is pre-dispersed slurry prepared by adding super-fine tourmaline powder and nano zinc oxide powder into 10 times amount of water, coating with sodium alkylbenzene sulfonate while heating and stirring. The nontoxic marine anti-fouling dope can be prepared through the steps of adding the nontoxic antifouling compound into ethanol aqueous solution, adjusting pH value to be 9-12, adding silicon ester ethanol solution to react for 2-4h, bathing in water and separating, and drying. The tourmaline of the nontoxic anti-fouling dope automatically develops an electric field on the surface of the dope in the seawater to enable the seawater to electrolyse to produce hypochlorite ions, which can prevent halobios to adhere or grow on the boat and the structure. The ion membrane is approximately 10 microns and causes no environment pollution. The nontoxic marine anti-fouling dope is mainly suitable for underwater fouling prevention.

This invention relates to packaging for dilute hypochlorite and hypochlorous acid compositions to produce stable compositions. Examples of suitable packaging containers are a bag-in-can device, a plastic aerosol container, a dual delivery container, a dual chambered device, an expandable chamber device, a precompression trigger sprayer, a mechanically pressurized device, and an ultrasonic sprayer.

The invention discloses a method for removing micro-pollutants in water via combination of ultraviolet light and free chlorine. The pollutants removed by the method are various pernicious micro-pollutants in water, such as pharmaceuticals and personal care products (PPCPs), algal toxin and refractory organics. The method specifically comprises the following steps: adding free chlorine into water containing the micro-pollutants, then performing light irradiation, generating a large amount of hydroxyl radicals and helium atom to attack the micro-pollutants and degrade the micro-pollutants, wherein the feeding amount of the chlorine is determined by the water quality condition and the concentration of the pollutants; the chlorine is fed according to a mole ratio of the chlorine to the pollutants in water being 1:1-100:1; the free chlorine is pypocholoride or chlorine. The method, disclosed by the invention, is simple to operate, obvious in effect and safe to use; the fed chlorine also can be used for the subsequent disinfection; after being processed via the method, the micro-pollutants in water can be completely removed; meanwhile, through the method, other pollutants can be removed synchronously; the synergy of the combination of ultraviolet light and free chlorine for disinfection can be played.

A foaming hypochlorite cleaning system is described that allows for easier cleaning of all hard-to-reach surfaces from all angles, especially underneath a range hood and up underneath the rim of a toilet bowl, and which comprises an alkaline hypochlorite and anionic surfactant composition contained in and dispensable from a package comprising an angled-neck sprayer bottle fitted with an invertible trigger sprayer assembly, wherein the cleaning system may be used in an entirely upside-down orientation to spray upwards at an acute angle.

The phenoxyphosphazene compound of the present invention is prepared by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least one reagent selected from metal hydrides, hydrazine, hypochlorites, thiosulfates, dialkyl sulfuric acids, ortho esters, diazoalkanes, lactones, alkanesultones, epoxy compounds and hydrogen peroxide or (c) both the adsorbent and reagent. Incorporation of the phenoxyphosphazene compound prepared by the process of the invention into a synthetic resin achives the following advantages: the synthetic resin can be prevented from discoloration; when the resultant resin composition is stored for a long time, the properties of the synthetic resin, such as heat resistance, weatherability, resistance to discoloration and chemical resistance are not deteriorated; and the resin composition gives a resin composition molded article excellent in properties such as flame retardancy, thermal stability, and moldability.

The invention discloses a recycling method for valuable metals in waste nickel-cobalt-manganese ternary lithium ion batteries. The method comprises the steps that cathode materials are dissolved by adding alkali, and separating is performed to obtain a dissolved solution I and undissolved substances; acidolysis is performed on the undissolved substances to obtain a dissolved solution II, the pH value is adjusted to be alkaline, precipitation is formed, and filtrate I and a precipitate I are obtained; acidolysis is performed on the precipitate I to obtain a dissolved solution III, ammonium hydroxide is added into the dissolved solution III for complexing, after the pH value is adjusted to be alkaline, soluble carbonate is added, and filtering is performed to obtain filtrate II and a precipitate II; soluble carbonate is added into the filtrate II, and heating is performed to obtain a precipitate III; after acidolysis is performed, the pH value is adjusted to be 3.0-3.5, pypocholoride is added to adjust the pH value to be 2.0-3.0, and filtering is performed to obtain filtrate III and a precipitate IV. Accordingly, multiple valuable metals in the waste lithium ion batteries are recycled without adopting any extraction agent and other organic solvent, and the recycling method is high in recycling efficiency, little in pollution, low in cost and suitable for industrialized popularization.