41 results about "Peroxy acid" patented technology

The invention discloses a high-strength moisture-proof gypsum board and a preparation method thereof, and relates to the technical field of gypsum board preparation. The high-strength moisture-proof gypsum board is prepared by dipping the surface paper in the composite dipping liquid and then pouring the surface paper and the gypsum core with the waterproof agent, the composite dipping liquid comprises the methoxy vinyl ether copolymer and the epoxy polyoxymethylene dimethyl ether, and the methoxy vinyl ether copolymer is 2, 3, 5-trimethyl-1, 3-pentanediol monoisobutyrate. According to the present invention, epoxy polyoxymethylene dimethyl ether is prepared by reacting 2, 4-dimethoxymethoxyphenylacetic acid with 2-hydroxyethyl vinyl ether, and the epoxy polyoxymethylene dimethyl ether is prepared by terminating polyoxymethylene dimethyl ether with allyl and then reacting with phthalimide hexperoxy acid, such that the waterproofness and the mechanical property of the gypsum board are improved; the waterproof agent is prepared by reacting hydrogen-containing silicone oil and fluorine-containing hyperbranched amide polyurea urethane, so that the moisture resistance and bonding strength of the gypsum board surface paper are enhanced, and additional mechanical support is provided for the gypsum board.

A method for controlling microbial growth in a sugar processing system is disclosed, wherein the method comprises adding a peroxy acid into water of a flume system used for transporting a sugar-containing plant material from a delivery or storage location to a wash system. In one non-limiting example embodiment, the sugar-containing plant material comprises sugar beets, and the peroxy acid comprises peracetic acid.

Embodiments of the present disclosure relate to a method of making a silanol-functional polyolefin, the method comprising combining starting materials comprising A) a silyl hydride-functionalized polyolefin, optionally B) a solvent, C) a peroxy acid, optionally D) a neutralizing agent, under thermal conditions for effecting synthesis of a silanol moiety, thereby forming a reaction mixture, the reaction mixture produces the silanol functional polyolefin having the silanol moiety under the thermal conditions.

The invention discloses an IC carrier plate nickel stripping agent and a preparation method and a nickel stripping method thereof, and relates to the technical field of semiconductor packaging. The IC carrier plate nickel stripping agent is prepared from the following components in mass concentration: 3.0 to 8.0 percent of main reactant, 1.0 to 5.0 percent of coordination agent, 1.0 to 5.0 percent of wetting agent, 1.0 to 5.0 percent of accelerating agent and 0.5 to 2.5 percent of stabilizing agent, the main reactant is one or more of phenethyl peroxy acid 1, 1-dimethyl ethyl ester, methyl peroxy acid 1, 1-dimethyl ethyl ester and perisononanoic acid-1, 1-dimethyl ethyl ester; the complexing agent is one or more of N, N-dimethylimidazole-1-sulfonamide, N-cyclohexyl p-toluene sulfonamide, and 2-acrylamido-2-methylpropanesulfonic acid. The invention further discloses a preparation method of the catalyst. The invention provides an IC (integrated circuit) carrier plate nickel stripping agent and a preparation method and a nickel stripping method thereof. The IC carrier plate nickel stripping agent has efficient nickel stripping performance and an effect of not corroding copper at normal temperature.

This invention discloses a soil remediation agent, its preparation method, and its application. The soil remediation agent comprises a humic acid-based remediation agent and an encapsulated microbial remediation agent; it contains an oyster shell pretreatment agent and a chitosan pretreatment agent; the oyster shell pretreatment agent comprises active calcium and zinc oxide; the zinc oxide coats at least a portion of the surface of the active calcium; the active calcium is formed by sequentially calcining and hydrating oyster shells; the chitosan pretreatment agent is formed by activating chitosan with inorganic peroxide. This invention utilizes the loose and porous framework structure of calcined oyster shells and modified chitosan to provide a porous matrix for humic acid and microorganisms, preparing a combined physicochemical adsorption and microbial adsorption degradation remediation agent. This not only efficiently solves the problem of heavy metal pollution in soil, but also provides a stable remediation agent structure that can be recycled after remediation, effectively removing heavy metals from the soil and preventing secondary pollution.

The application belongs to the technical field of chemical product production, and particularly relates to a catalyst composition and a method for preparing peroxy acid. The catalyst composition contains an acidic catalyst and a stabilizer, wherein the stabilizer is a nitrogen-containing alkaline compound with a lone pair of electrons on the N atom. The specific catalyst composition can be used to prepare peroxy acid, and the conversion rate of hydrogen peroxide is greater than 95%, the selectivity of the prepared peroxy acid is greater than 70%, and the final obtained peroxy acid product is used to prepare caprolactone, so that the conversion rate of cyclohexanone is greater than 95%, and the selectivity of the prepared caprolactone is greater than 95%.

The application belongs to the field of catalysts and preparation thereof, and particularly relates to a catalyst, a preparation method and a method for preparing peroxy acid. The catalyst comprises modified molecular sieves and heteropoly acid supported on the modified molecular sieves, wherein the surface of the modified molecular sieves is modified with alkyl and amino groups. When the catalyst is used to prepare peroxy acid, the conversion rate of organic acid can be improved, the equilibrium conversion rate is higher than 60%, the selectivity of the prepared peroxy acid is higher than 98%, and the catalyst can be recycled and reused, and is suitable for industrial production.

The present application relates to the chemical technology field, disclose a kind of preparation method of anhydrous peroxy acid product and the preparation method of caprolactone.The preparation method of anhydrous peroxy acid product includes the following steps: (1) in the presence of homogeneous acidic catalyst, hydrogen peroxide is reacted with organic acid, then the reaction product is divided into water phase and peroxy acid phase;(2) the homogeneous acidic catalyst in the peroxy acid phase is removed.The preparation method of caprolactone includes: the anhydrous peroxy acid product is oxidized with cyclohexanone.The method can catalyze the synthesis of peroxy acid with homogeneous acidic catalyst, can keep high synthesis efficiency of peroxy acid, and by removing homogeneous acidic catalyst from peroxy acid product, the refined anhydrous oxygen acid product is used for oxidizing cyclohexanone to prepare caprolactone, which can improve the selectivity and yield of caprolactone.

The present application relates to the field of pharmaceutical chemical technology, and more particularly to a method for synthesizing and purifying 2,4-diamino-5,6-dichloropyrimidine, which comprises reacting 2,4-diamino-6-chloropyrimidine with a dilute hydrochloric acid solution in the presence of a peroxo acid to obtain 2,4-diamino-5,6-dichloropyrimidine. Compared with the traditional method, the method for synthesizing and purifying 2,4-diamino-5,6-dichloropyrimidine has the advantages of easy availability of raw materials, low cost, easy control of reaction, simple post-treatment, high yield, and suitability for industrial production.

The invention relates to the technical field of chemical engineering, and particularly discloses an anhydrous organic peroxy acid production system and method.The anhydrous organic peroxy acid production system comprises a peroxidation reaction distiller, a first oil-water separator, an azeotropic distillation tower and a second oil-water separation and light component removal tower, and moisture is brought out of a reaction system through two times of azeotropy and two times of oil-water separation; and the solvent and the entrainer are respectively recovered through the azeotropic distillation tower and the light component removal tower, and the recovered materials can be recycled. According to the present invention, with the method, the hydrogen peroxide conversion rate and the organic peroxy acid selectivity are high, the prepared anhydrous organic peroxy acid has characteristics of excellent quality and water content of less than 0.01%, and the process has advantages of short reaction time, high raw material utilization rate, high heat energy utilization rate and good economy.

The present invention relates to chemical and biological warfare agent decontaminating compositions and methods for using the same to decontaminate animal skin and wounds thereon exposed to the agents. The compositions may comprise a peracid, a hydroperoxide, and a peroxyacid.

Methods for generating a sterilant vapor in a sub-atmospheric environment for use in sanitization and sterilization. The vapor is generated from a mixture containing a sterilant and a molecular mobility enhancer (MME). More specifically, the use of the MME enhances the vaporization and mobility of the sterilant, particularly hydrogen peroxide and / or a peroxy acid, to provide enhanced or improved sterilization. Also provided are solid-form sterilant comprising a sterilant and an MME. Further provides are various packaged forms of sterilant, particularly containing hydrogen peroxide and / or a peroxy acid for use in sanitation and sterilization methods herein.

Compositions and methods for increasing the sugar yield of harvested sugarcane are described. Antimicrobial compositions are applied to freshly cut sugarcane to increase sugar yield. Beyond theory, compositions containing peracids or fatty acids are considered effective in preventing microbial contamination between harvest and milling. These antimicrobial compositions inhibit bacterial metabolic activity that converts sucrose in sugarcane juice into dextran. Preventing dextran production improves sucrose yields and purity in the treated sugarcane.

Topical formulations comprising peroxyacids prepared in situ from trichloroacetic acid, dichloroacetic acid, monochloroacetic acid or acetic acid and hydrogen peroxide are useful for promoting hair growth and for preventing hair loss.

The invention discloses a low-corrosion and low-odor sterilization disinfectant and a sterilization and disinfection method thereof, and when the sterilization disinfectant is dissolved in water, organic peroxy acid embedded by micelle is formed. On one hand, the rate and the effectiveness of generating organic peroxy acid by the precursor under the system in the prior art are remarkably improved, so that the excellent characteristics that the precursor is rapidly and completely reacted and residues are not generated are realized; on the other hand, the peroxy organic acid is wrapped in the micelle structure, so that the stability is improved, the decomposition rate is greatly reduced, the micelle structure interacts with the characteristic difference of different material surfaces, peroxy acid can be selectively released by utilizing the stability change of the micelle structure, and finally, the release of peroxy acid is accurately controlled through the micelle structure; while efficient sterilization is realized, the irritation and corrosivity of organic peroxy acid are remarkably reduced, so that the overall performance is optimized.

The invention belongs to the technical field of high polymer materials, and particularly relates to a preparation method and application of a PEDOT / PSS polymer. According to the PEDOT / PSS polymer provided by the invention, EDOT is taken as an initial raw material, a peroxy acid solution or a heteropolyacid solid is taken as a catalyst, sodium polystyrenesulfonate is taken as a doping agent, a stearate surfactant is taken as a dispersing agent, dimethyl carbonate is taken as a reaction solvent, and chemical oxidative polymerization is carried out under a stirring condition to obtain the PEDOT / PSS polymer. The method provided by the invention has the advantages that the reaction is rapid, the reaction time is short, the temperature condition is easy to control, the post-treatment is simple, the polymer yield and the conductivity are high, and the like, and through detection, the conductivity of the obtained PEDOT / PSS polymer is up to 458 S.cm <-1 >.

The invention discloses a combined system overflow sewage disinfection device which comprises an inlet water regulation and storage area, a coagulation area, a sedimentation area and a contact disinfection area which are sequentially connected through pipelines, and a dosing area for supplying chemicals to each functional unit, the water inlet regulation and storage area receives and regulates the amount of overflow sewage; in the coagulation area, suspended matters, heavy metals and macromolecular organic matters in the sewage are promoted to form floc with a coagulant through a flocculation stirring device; in the settling zone, floc and sewage are separated by utilizing an inclined tube settling device; the dosing area is provided with a liquid storage tank, a dosing pump and a dosing pipe which are respectively used for adding a coagulant to the coagulation link and adding an organic peroxy acid disinfectant to the disinfection link, and is provided with a solar panel for supplying power to the flocculation stirring device, the dosing pump and the ultraviolet light unit in the contact disinfection area; in the contact disinfection area, the sewage is irradiated through an ultraviolet unit, organic peroxy acid is activated to generate active free radicals, and disease microorganisms are efficiently inactivated in cooperation with oxidation of the organic peroxy acid and ultraviolet irradiation. The device has the functions of regulation, storage and purification, is suitable for complex water quality, has few disinfection byproducts and low energy consumption, and can meet the requirements of urban combined system overflow pollution prevention and control.

The invention belongs to the technical field of organic synthesis, and particularly relates to a preparation method of 2-chloro-4-(methylsulfonyl) benzoic acid. The preparation method of the 2-chloro-4-(methylsulfonyl) benzoic acid comprises the following steps: uniformly mixing 3-chlorophenyl methyl sulfide, oxalyl chloride and a Friedel-Crafts reaction catalyst in dichloromethane under a temperature control condition, and carrying out a reaction to prepare the 2-chloro-4-methylthio benzoic acid, the method comprises the following steps: adding an organic peroxy acid or a metal peroxy acid complex into an organic solvent dissolved with 2-chloro-4-methylthio benzoic acid under a temperature control condition, and reacting to prepare 2-chloro-4-(methylsulfonyl) benzoic acid; or under the temperature control condition, hydrogen peroxide is added into the acidic organic solvent in which the 2-chloro-4-methylthio benzoic acid is dissolved for reaction, and the 2-chloro-4-(methylsulfonyl) benzoic acid is prepared. The preparation method has the advantages of easily available raw materials, simple operation, mild reaction, high yield and high product purity, and is suitable for large-scale production.

The invention belongs to the field of clean production of paper pulp bleaching in pulping and papermaking industries, and discloses an AOX reduction agent for a chlorine dioxide paper pulp bleaching section and application of the AOX reduction agent. The agent for AOX reduction in the chlorine dioxide paper pulp bleaching section comprises an agent A and an agent B. The agent A comprises at least one of micromolecular organic acid A1 and aminocarboxylic acid A2. And the agent B is peroxy acid salt. An agent A and an agent B are added at the same time in acidic and heated chlorine dioxide bleaching sections, carbon center free radicals with dehalogenation activity are generated in situ, the free radicals selectively break C-Cl bonds of organic halides through a single electron transfer mechanism, chlorine atoms are converted into chloride ions, and therefore in-situ removal of AOX is achieved. According to the AOX decrement agent and the application method thereof provided by the invention, the generation amount of AOX can be obviously reduced by 55-80%, and the whiteness and viscosity of paper are not sacrificed.

This invention discloses a method for separating the oxide active material and current collector of a lithium-ion battery cathode, and its application. The separation method includes the following steps: acid leaching of the cathode sheet to be treated; adding a free radical generator to oxidize the binder in the cathode sheet, thereby separating the oxide active material from the current collector; wherein the oxide active material contains cobalt, and the free radical generator includes peroxide salts. This invention eliminates the need for additional metal ions, enabling efficient separation of the battery active material from the current collector on the cathode sheet. It is applicable to a wide pH range, has a simple process, low energy consumption, and low emissions. Furthermore, the recovered active material and current collector are free of impurity ions and do not require pulverizing the electrode sheet or dissolving the aluminum foil; the electrode sheet can be directly used for separation treatment. The operation is simple, and the recovered active material and current collector can also be directly used in lithium-ion battery production, resulting in high economic benefits.

The application discloses an etching liquid and a preparation method and application thereof, and belongs to the technical field of etchants. According to mass percentages, the etching liquid comprises 2.00-15.00 wt% of a peroxy acid, 2.00-15.00 wt% of organic acid A and 2.00-25.00 wt% of organic acid B, and the balance is water; the organic acid A comprises at least one of formic acid, acetic acid, propionic acid, butyric acid, octanoic acid, adipic acid, oxalic acid, malonic acid and benzoic acid; and the organic acid B comprises at least one of methyl sulfonic acid, malic acid, citric acid, maleic acid and tartaric acid. Silver in a multilayer film formed by silver and an ITO film is etched by using the etching liquid, so that the problem of damage to a titanium-aluminum-titanium layer in a substrate caused by phosphoric acid and being not conducive to environmental protection is avoided, the ITO / Ag / ITO structure can be effectively removed, an excellent profile is formed, there is no silver and ITO residue, and no Ag resorption phenomenon occurs.

This invention discloses a preparation process for the co-production of alicyclic epoxy resin and glycidyl ester epoxy resin, comprising the following steps: mixing epoxy resin raw materials, solvent, and hydrogen peroxide; adding acid anhydride to the reaction system in batches; filtering the reaction system after the reaction is completed to separate the liquid phase and by-product acid solid; obtaining alicyclic epoxy resin through a series of operations on the liquid phase; adding wet by-product acid solid and continuing to react with epichlorohydrin to finally obtain the corresponding glycidyl ester epoxy resin; and performing an epoxidation reaction by using cyclic anhydrides such as hexahydrophthalic anhydride and phthalic anhydride in combination with hydrogen peroxide to generate corresponding peroxy acids. The generated by-product dicarboxylic acid and excess raw material anhydride can be directly filtered out from the reaction system and used directly as raw materials for the production of glycidyl ester epoxy resin, thereby achieving the co-production of alicyclic epoxy resin and glycidyl ester epoxy resin.

Topical formulations containing peroxyacids prepared in situ from trichloroacetic acid, dichloroacetic acid, monochloroacetic acid, or acetic acid and hydrogen peroxide are useful for promoting hair growth and preventing hair loss.

The application discloses a photo-biochemical treatment method for caprolactone device production wastewater, which comprises three-stage combined process for treating the liquid extracted from the tower kettle of a stripping tower: S1 is peroxo acid reduction pretreatment-alkali neutralization pretreatment; S2 comprises a hydrolysis acidification treatment process, a sludge body anaerobic treatment process with a core-shell structure which is different from the existing granular sludge process, and an aerobic biological treatment process; and S3 is a combined process of a sedimentation tank and a biological filter tank. The combined process of peroxo acid reduction pretreatment-alkali neutralization pretreatment-hydrolysis acidification-biochemical anaerobic treatment-anoxic / aerobic biological treatment-sedimentation sludge recovery-biological membrane filtration is used for treating most of COD of the liquid extracted from the tower kettle of a caprolactone device, and the short board of the domestic lack of suitable matching caprolactone device wastewater treatment process is made up.

The application discloses an IC carrier plate nickel removing agent and a preparation method and a nickel removing method thereof, and relates to the technical field of semiconductor packaging. The IC carrier plate nickel removing agent comprises the following mass concentration components: 3.0-8.0% of a main reaction agent, 1.0-5.0% of a complexing agent, 1.0-5.0% of a wetting agent, 1.0-5.0% of an accelerator and 0.5-2.5% of a stabilizer; the main reaction agent is one or more of benzene ethyl peroxo acid 1,1-dimethyl ethyl ester, methyl peroxo acid 1,1-dimethyl ethyl ester and perisopropyl acid-1,1-dimethyl ethyl ester; and the complexing agent is one or more of N,N-dimethyl imidazole-1-sulfonamide, N-cyclohexyl p-toluenesulfonamide and 2-acrylamido-2-methyl propane sulfonic acid. The application provides an IC carrier plate nickel removing agent and a preparation method and a nickel removing method thereof; the IC carrier plate nickel removing agent has the effects of efficient nickel removing performance and non-corrosion of copper at normal temperature.

The invention belongs to the technical field of soil environment regulation and control, and discloses a composite soil treatment composition as well as a preparation method and application thereof. The composite soil treatment composition comprises a peroxy acid compound, ozone, a dispersing agent and water, the peroxy acid compounds comprise peroxysulfuric acid compounds and / or peroxyphosphoric acid compounds and / or peroxyphosphoric acid ester compounds. The preparation method comprises the following steps: S1, mixing a peroxy acid compound and a dispersing agent into water to form a stable solution; s2, ozone is pumped into the stable solvent through a nanocrystallization turbine pump, so that the ozone is dispersed into nano bubbles in the stable solvent, and the gas-liquid mixed composite soil treatment composition is obtained. During application, the composite soil treatment composition is dripped into soil through a drip irrigation system. In conclusion, the nanometer turbopump and the drip irrigation system are used for achieving sufficient disinfection of the composite soil treatment composition on the soil, and the composite soil treatment composition has the advantages of being convenient to operate, high in disinfection efficiency, low in cost, free of pollution, free of residues and the like.

The invention relates to the technical field of non-ferrous metal hydrometallurgy, in particular to a tungsten-rhenium or molybdenum-rhenium alloy recycling and preparing method which comprises the steps that a hydrogen peroxide solution is used for carrying out a reaction for leaching a second metal element, a peroxy metal acid solution is obtained, and rhenium leaching is achieved through the acidity of the peroxy metal acid solution and excessive hydrogen peroxide; removing impurity cations in the solution by using cationic resin to prepare an alloy powder preform, and reducing to obtain alloy powder; and sintering the alloy powder to obtain the alloy. According to the method, the tungsten-rhenium / molybdenum-rhenium alloy is leached through hydrogen peroxide, a peroxy acid solution is formed, and leaching of rhenium is synchronously achieved; by utilizing the characteristic that tungsten, molybdenum and rhenium all exist in an anion form under a peroxide ion system, metal cation impurities possibly introduced in the leaching process are removed by using cation resin, and the purity of the solution is further improved; the problems that in the prior art, the recovery process of tungsten-rhenium and molybdenum-rhenium alloy is complex, element distribution is uneven due to doping in the preparation process, cost is high, and the alloy preparation process is complex are solved.

The present invention relates to the use of compositions containing an effective amount of peroxyacid to reduce the viral load in animal feed and water supply, as well as the surfaces and containers in which the feed and water come into contact. Another aspect of the present invention relates to a formaldehyde-free antiviral composition suitable for animal feed, water, and associated storage containers, wherein the composition is capable of controlling the growth of viruses, including but not limited to African Swine Fever, PED, and Avian Influenza. Another aspect of the present invention relates to a kit for treating animal feed to control the growth of viruses comprising a peroxypropionic acid concentrate and a buffered solution.

The invention relates to a modified catalyst suitable for alicyclic epoxy resin synthesis and a preparation method and application thereof. According to the catalyst, an aluminum-zinc composite oxide is used as a carrier, and tungsten and lanthanum elements are sequentially loaded through a step-by-step equivalent-volume impregnation method, so that the supported silicon-tungsten heteropolyacid catalyst with a specific structure is formed. The catalyst is used in a process for continuously producing alicyclic epoxy resin in a fixed bed by taking low-concentration hydrogen peroxide as an oxidizing agent, has the characteristics of high activity, high selectivity and recyclability, remarkably reduces the safety risk and environmental pollution of a traditional peroxy acid process, and is suitable for industrial large-scale production.

The present invention relates to a stable liquid detergent composition comprising - 3 to 35 wt% of hydrogen peroxide, - 0.0005 to 5 wt% of at least one peroxy acid or salts thereof, - 0.0005 to 1 wt% of at least one chelating stabilizer, and - 0.1 to 60 wt% of at least one surfactantand optionally water to 100 wt%.