17 results about "Sodium chlorite" patented technology

The described invention is a disinfectant that has a bactericidal and fungicidal effect. Optimally, the agent is diluted more than 70 times before use, thereby achieving pH neutrality of the solution. The agent is also effective, bactericidal and fungicidal, and when diluting the final formulation up to 200 times. The improvement of the disinfectant is based on the presence of the active substance didecyldimethylammonium chloride. The agent also contains sodium chlorite. In this invention, polyethylene glycol, in addition to the function of a polymer carrier, also has the function of a stabilizer of the solution of the active substance, a non-ionic surfactant.

This invention discloses a method for preparing and applying a chitosan-nanofibrillar-based smart indicator membrane loaded with anthocyanins and alizarin. The method includes the following steps: mixing beet powder with hydrochloric acid, washing with water until neutral, and drying; adding sodium hydroxide solution, mixing and reacting, washing with water until neutral, and drying; adding sodium chlorite solution, mixing, adjusting the pH to 3-3.5, reacting, and washing with water until neutral to obtain beet fiber; adding water, homogenizing under ultra-high pressure to obtain a beet nano-suspension; adding the beet nano-suspension to a chitosan-acetic acid solution and stirring, then adding glycerol; adding pigments, mixing, and obtaining a membrane solution; ultrasonically degassing, and drying to form a membrane. This membrane, as a food preservation indicator membrane, possesses both the characteristics and functions of food preservation and indicating food freshness; using beet nanofibers as a supplementary material improves the mechanical properties of the chitosan membrane; the addition of alizarin and anthocyanin mixed pigments enriches the color changes of the indicator membrane and improves its stability.

A method of sanitising a body of water including the steps of adding sodium chlorite and / or sodium chlorate to the body of water and converting the sodium chlorite and / or sodium chlorate to chlorine dioxide in an electrolysis cell which is in fluid communication with a water circulation system of the body of water.

The present invention provides a method of treating frontotemporal dementia, or a childhood genetic neurodegenerative disease such as Ataxia Telangiectasia (A-T), or neurodegenerative diseases such as Parkinson's disease or neuropsychiatric diseases comprising administering to a subject in need thereof an effective amount of chlorite composition, such as sodium chlorite. The present invention thereby provides a method of modulating the immune system in a subject in need thereof. Described herein are methods of administration and treatment.

Methods of manufacturing a moisture-activated powder are provided which provide generation and release of chlorine dioxide without detectable amounts of any toxic by-products such as chlorine gas, chlorites, or chlorates. The powder need not be exposed to light before or during exposure of the powder to moisture or relative humidity to generate the gas. The powder can also be prepared under conditions that minimize or prevent decomposition or oxidation of sodium chlorite or premature moisture activation of the powder during the manufacturing process to maximize its activity.

The application discloses a modified starch-based petroleum drilling aid and a preparation method thereof, and comprises the following steps: S1, oxidizing dialdehyde starch into polycarboxyl starch by using sodium chlorite; S2, performing esterification treatment on the polycarboxyl starch, and then performing amidation reaction on the polycarboxyl starch and sodium p-aminobenzenesulfonate; S3, performing reduction treatment on the amide bond by using a reducing agent; and S4, performing lipolysis on the starch after the reduction treatment to obtain the modified starch. The modified starch prepared by the application can greatly improve the temperature resistance and salt resistance by grafting a large number of rigid benzene rings and hydration groups, and has excellent effects of increasing viscosity, improving cutting and reducing filtration loss.

The invention relates to the field of functional materials, in particular to a preparation method and application of a kapok-based porous material with a radiation cooling function. According to the method, natural kapok short fibers are subjected to constant-temperature alkali treatment to peel off wax on the surface layer, a delignification reaction is carried out with an acidic sodium chlorite solution, and the kapok-based porous material with the radiation cooling function is obtained. And the coarse reticular cellulose structure in the material is thoroughly exposed. The treated active fibers and nano cellulose are subjected to high-strength blending in a water phase, nano fibrils are guided to deeply penetrate into gaps of a micron-sized kapok skeleton, and a tightly-meshed composite system is constructed. And dropwise adding an organosiloxane reagent into the acidic liquid phase to complete surface hydrophobic modification, and carrying out controlled low-temperature setting and vacuum freezing sublimation dehydration to form the three-dimensional base material containing a micro-nano dual-pore network. The material can effectively reflect sunlight and emit heat radiation through an atmosphere window, zero-energy-consumption passive radiation cooling is achieved, and meanwhile the excellent heat insulation performance is achieved.

The application discloses aile lyocell fiber, a preparation method and application, wherein the preparation method comprises the following steps: obtaining ailao powder from fresh ail leaves; under fermentation conditions, the ailao powder is fermented by microorganisms to selectively degrade lignin and hemicellulose in the ail leaves, and an ail leaf cellulose pulp rich in active ingredients is obtained; the ail leaf cellulose pulp is subjected to auxiliary hydrolysis by sodium chlorite and sodium hydroxide to obtain purified ail leaf cellulose; the purified ail leaf cellulose is dissolved in N-methyl morpholine-N-oxide aqueous solution, an antioxidant and an alkaline adjusting agent are added, and a spinning dope is obtained; and the spinning dope is subjected to post-treatment to obtain the ail lyocell fiber. The application provides the ail lyocell fiber, the preparation method and the application, adopts a microbial fermentation technology as a core, and realizes efficient extraction of cellulose and in-situ reservation of natural active ingredients under mild conditions by screening of efficient composite microbial flora for directional degradation of lignin and hemicellulose in the ail leaves.

The application provides a preparation process of a light-oxygen synergistically triggered HFO self-curing self-sealing adhesive. The process comprises the following steps: first, preparing polyvinylidene fluoride coated sodium chlorite microcapsules; then, mixing the microcapsules with a light-oxygen initiator BP-4, a crosslinking agent and a polyether polyol to prepare a composite additive; finally, adding the composite additive into an HFO body and mixing uniformly at high speed to obtain the self-sealing adhesive. The application encapsulates the oxidizing agent by using the microcapsules, combines with the BP-4 light initiator, and triggers the HFO double bond free radical polymerization by the synergistic action of the ambient light and oxygen when the leakage occurs, so that the thixotropic gel is rapidly formed within 5-8 seconds, and the leakage reduction rate is more than 95%. The self-sealing adhesive has good mutual solubility with the HFO body, the refrigeration efficiency reduction rate is only 1.0-1.8%, and the homogeneous phase is stable when the self-sealing adhesive is stored in the dark at room temperature for 60 days. The application solves the problems of the single triggering of the existing leak stopper, the easy failure, the response lag and the poor compatibility with the HFO working medium, and is suitable for the intelligent leakage plugging of the refrigeration and thermal management system.

The application discloses a kind of multilayer nano activation material and its preparation method and in sterilization and deodorization application, belong to air purification material technical field, including structural reinforcement layer, catalytic oxidation layer, isolation layer, acid source layer;The structural reinforcement layer includes cystamine modified chondroitin sulfate and nanocellulose;The catalytic oxidation layer includes mesoporous silica loaded with sodium chlorite and metal-phenolic nano particles@metal-doped hollow mesoporous manganese dioxide;The isolation layer includes pullulan and hydrophobic nanosilica;The acid source layer includes citric acid microcapsule and sodium alginate.The material set catalytic degradation, intelligent sterilization, malodor decomposition multi-functional synergy integration, realize stable storage, intelligent trigger and efficient synergistic purification organic unity, can be widely applied to air purifier, washing and protection product, textile fiber, building paint, wall material and so on many kinds of scene.

The present invention is entitled "A Continuous Flow Preparation Method for Tegoragen Intermediates", belonging to the field of chemical synthesis technology. The technical problem to be solved is that the existing preparation methods have safety risks, long reaction time and low yield. The key points of the technical solution are as follows: The continuous flow preparation method of the present invention is as follows: (1) 3,5-difluorophenol and 3-chloropropanol are dissolved in organic solvents to form solutions, and then reacted with organic amines in a microreactor. After the reaction is completed, the material is discharged and the organic layer 1 is separated; (2) 2,2,6,6-tetramethylpiperidine oxide is added to the organic layer 1, and then reacted with sodium hypochlorite solution and sodium chlorite solution in a microreactor for oxidation reaction. After the reaction is completed, the material is discharged and the organic layer 2 is separated; (3) The organic layer 2 is then reacted with concentrated sulfuric acid in a microreactor. After the reaction is completed, the material is washed with water and the organic layer 3 is separated. After concentration and recrystallization, the tegoragen intermediate 5,7-difluorobenzodihydropyran-4-one is obtained.

This invention discloses a chlorine dioxide precursor emulsion and its sustained-release gel, comprising a sodium chlorite emulsion (a chlorine dioxide precursor), a citric acid emulsion, and a sodium alginate gel matrix, with the following weight proportions: sodium chlorite emulsion: 0.5-12 parts, citric acid emulsion: 0.1-9 parts, and sodium alginate gel matrix: 1-20 parts. Further, the sodium chlorite emulsion is a w / o type sodium chlorite emulsion, and the citric acid emulsion is a w / o type citric acid emulsion. This invention also discloses a method for preparing the sodium chlorite emulsion (a chlorine dioxide precursor) and its sustained-release gel. The gel of this invention has advantages such as convenient use, non-irritating properties, excellent antibacterial effect, and environmental friendliness, and can be used to develop products such as topical skin disinfectant gels and fruit and vegetable preservatives.

This invention discloses a cellulose-based aerogel, its preparation method, and its applications. The method includes: sequentially subjecting cellulose raw materials to pulping, sodium chlorite bleaching, carboxymethylation modification, and high-pressure homogenization to prepare a nanocellulose suspension with an aspect ratio >500, degree of polymerization >600, and carboxymethyl content of 1.2-1.8 mmol / g; mixing this suspension with a calcium ion source and sodium alginate under non-alkaline, water bath heating conditions; and then performing in-situ slow-release crosslinking of calcium ions regulated by a calcium ion regulator to construct a dual-network hydrogel with an interpenetrating chemical crosslinked network of calcium alginate and a physically entangled network of nanocellulose; followed by freeze-drying to obtain a composite aerogel. This invention enhances the strength of the aerogel by adding nanocellulose and further improves its thermal insulation and mechanical strength, far superior to existing lignin / weakly alkaline systems, and has broad application prospects in the field of room temperature to medium temperature thermal insulation.

A flexible and smart wood with responsive function, an actuator and a preparation method of the flexible and smart wood with responsive function are provided. The preparation method includes the following steps: removing lignin from wood by using sodium chlorite solution, removing hemicellulose through alkali treatment, compounding a wood chip with an azobenzene compound by using a negative pressure method, and then densifying to form a wood film. According to the preparation method, the flexible and smart wood is successfully prepared, and the actuator made from the flexible and smart wood takes stimulation (such as illumination) given by an external environment as a power source, so that the actuator has an advantage of no secondary energy consumption.

This application relates to a chlorine dioxide slow-release ball, belonging to the technical field of environmental disinfection. It comprises, from the inside out, an activated alumina ball and an inorganic porous layer; wherein the activated alumina ball is loaded with sodium chlorite and a porous membrane, and the inorganic porous layer is loaded with a porous membrane. The chlorine dioxide slow-release ball of this application achieves the goals of high loading capacity, long release period, uniform release rate, and stable physical morphology.