77 results about "Peroxy acid" patented technology

The invention discloses a high-barrier antibacterial packaging material, a preparation method thereof and a packaging bag, and belongs to the technical field of packaging, the packaging material comprises the following raw materials by weight: 75-85 parts of polylactic acid, 15-25 parts of poly (butylene succinate), 2-6 parts of epoxidized urushiol, and 1-3 parts of benzyl quaternary ammonium salt modified montmorillonite; the epoxidized urushiol is prepared by carrying out epoxidation reaction on urushiol and organic peroxy acid; the packaging material further comprises the following raw materials: 2-5 parts of sepiolite fiber loaded magnesium oxide; according to the invention, biodegradable polylactic acid and poly (butylene succinate) are taken as base materials, and epoxidized urushiol is taken as a reactive compatilizer, so that the compatibility between polylactic acid and poly (butylene succinate) is improved, and meanwhile, the binding property between a polymer matrix and benzyl quaternary ammonium salt modified montmorillonite and sepiolite loaded magnesium oxide is enhanced; the packaging material with good mechanical property, barrier property and antibacterial property is obtained.

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.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a method for preparing caprolactone, in particular to a method for continuously preparing caprolactone. The method comprises the following steps: (1) mixing a peroxy acid synthesis solution containing an acidic catalyst with a stabilizer which is a nitrogen-containing alkaline compound and has lone pair electrons on an N atom; and (2) respectively inputting cyclohexanone and the mixed solution obtained in the step (1) into a microreactor to carry out a first reaction, and then introducing a product obtained by the first reaction into a tubular reactor to carry out a second reaction. By adopting the method for preparing the caprolactone, the stability and safety of the reaction can be improved, meanwhile, the conversion rate of the cyclohexanone is increased, the conversion rate of the cyclohexanone is 99.5% or above, and the selectivity of the prepared caprolactone is gt; the content is 99.5%.

The invention belongs to the field of catalysts and preparation thereof, and particularly relates to a catalyst, a preparation method thereof and a method for preparing peroxy acid. The catalyst comprises a modified molecular sieve and heteropoly acid loaded on the modified molecular sieve, and the surface of the modified molecular sieve is modified with alkyl and amino. When the catalyst is used for preparing peroxy acid, the conversion rate of organic acid can be increased, the equilibrium conversion rate is higher than 60%, and the selectivity of the prepared peroxy acid is gt; in addition, the catalyst can be recycled, and is suitable for industrial production.

The invention discloses a method for preparing epsilon-caprolactone by a peroxy acid oxidation method, and relates to the field of organic chemical synthesis. The method specifically comprises the following steps: preparation of peroxy acid, Baeyer-Villiger oxidation reaction of peroxy acid and cyclohexanone, and separation and purification of a product. Peroxy acid generated by organic acid and hydrogen peroxide is used as an oxidizing agent, and a metering pump is adopted to accurately control the raw material proportion. The method has the advantages of simplicity and convenience in operation, mild reaction conditions and high yield, and is suitable for industrial production.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a method for preparing peroxy acid. The method comprises the following steps: S1, carrying out reaction on organic acid, hydrogen peroxide, a catalyst and a solvent in a first pre-reactor, and introducing a product obtained by the reaction into a first reactive distillation tower for reaction; s2, reacting the product obtained in the step S1 in a second pre-reactor, and introducing the product into a second reactive distillation tower for reaction after the reaction is finished; s3, the product obtained in the step S2 and a stabilizer are subjected to a reaction in a mixer, the stabilizer is a nitrogen-containing alkaline compound, lone pair electrons exist on N atoms, and the catalyst is selected from one or two or more of sulfuric acid, nitric acid, isopolyacid and heteropolyacid. By adopting the method to prepare the peroxy acid solution, the selectivity and yield of peroxy acid can be improved, and the total conversion rate of hydrogen peroxide is gt; the selectivity of peroxy acid is gt; meanwhile, caprolactone is prepared by using the peroxy acid to dissolve cyclohexanone oxide liquid, and the conversion rate of cyclohexanone is gt; the selectivity of the obtained caprolactone is gt; 85%.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a system and a method for preparing anhydrous peroxy acid with more than C3. The system comprises a reactive distillation dividing wall tower, the reactive distillation dividing wall tower comprises a reaction separation zone, a water zone, a tower top zone and a tower bottom zone, the reaction separation zone and the water zone are arranged between the tower top zone and the tower bottom zone, the reaction separation zone is provided with a raw material inlet, and the water zone is provided with a plurality of solvent inlets; the reaction separation area and the water-carrying area are separated through a NaA molecular sieve membrane assembly, and the bottom of the water-carrying area is of a closed structure. By adopting the system disclosed by the invention, water generated by reaction and water brought by hydrogen peroxide can be removed from the system in time, backmixing among reaction raw materials is reduced, the reaction rate is further increased, and meanwhile, the water content of peroxide at the tower bottom can be reduced, so that the retention time of the peroxide is shortened, and the energy consumption is reduced.

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.

The present invention addresses the problem of providing a method for producing a solid electrolyte-electrode assembly capable of reducing interface resistance by making it unlikely for a gap to exist at the interface between a solid electrolyte and an electrode.　This method for producing a solid electrolyte-electrode assembly according to the present invention involves incorporating a lithium-ion compound into an amorphous metal oxide-forming composition when forming a solid electrolyte, and comprises: a step for preparing an amorphous metal oxide-forming composition by reacting a metal compound containing a titanium atom and an acid compound selected from the group consisting of peroxo acids, and preparing a metal oxide precursor solution which has an acid as a ligand; and a solid electrolyte-electrode assembly-forming step for contacting mist or vapor comprising the amorphous metal oxide-forming composition to the surface of a substrate heated to 150-700°C, and forming a solid electrolyte-electrode assembly comprising the amorphous metal oxide on the surface of the substrate.

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 present disclosure features methods for producing small, halogenated organic compounds derived from an organic acid, such as a peroxy acid.

The invention provides a method for selectively recovering lithium by utilizing acid leaching of organic peroxy acid and application. The method comprises the following steps: step 1, carrying out heat treatment on lithium iron phosphate powder in an inert gas atmosphere to remove impurities; 2, uniformly mixing organic peroxy acid with water to obtain an organic peroxy acid solution, adding lithium iron phosphate powder into the organic peroxy acid solution, and reacting to obtain a lithium-rich solution and ferrophosphorus slag; 3, precipitating the lithium-rich liquid twice to obtain lithium carbonate precipitate and lithium phosphate precipitate respectively; and 4, cleaning, drying and crushing the lithium carbonate precipitate and the lithium phosphate precipitate obtained in the step 3 to obtain a finished lithium carbonate product and a finished lithium phosphate product. An oxidizing agent and inorganic acid commonly used in the acid leaching process are replaced with organic peroxy acid, the lithium element in the waste lithium iron phosphate material is selectively recycled, and consumption of excessive acid and alkali and a large amount of water in the leaching process is avoided.

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.

The invention provides a preparation method of dithiothreitol, which comprises the following steps: step S1, carrying out epoxidation reaction on 1, 4-dibromo-2-butene and peroxy acid to generate 1, 4-dibromo-2-epoxidized butene; s2, carrying out a substitution reaction on the 1, 4-dibromo-2-epoxidized butylene and thioacetate, so as to generate 1, 4-diacetyl thio-2-epoxidized butylene, and carrying out a reaction on the 1, 4-dibromo-2-epoxidized butylene and thioacetate so as to generate 1, 4-diacetyl thio-2-epoxidized butylene; and S3, carrying out a hydrolysis reaction on the 1, 4-diacetyl thio-2-epoxidized butylene, so as to generate the dithiothreitol. According to the preparation method disclosed by the embodiment of the invention, 1, 4-dibromo-2-butene is used as a starting raw material, the epoxidation reaction is firstly carried out, then thioacetate is used for replacing bromine at the tail end, and finally the hydrolysis reaction is carried out to obtain the target product dithiothreitol, so that the whole synthesis route is short, the raw material is safe and non-toxic, impurities are easy to remove, and the preparation method is suitable for industrial production.

Provided is a method for efficiently separating and recovering, from plant-derived biomass, a biomass composition containing highly pure mono- and / or polycarboxylic acid that is highly useful industrially.　This method obtains a biomass composition containing a mono- and / or polycarboxylic acid that has a molecular weight of 200 or less, and a polycarboxylic acid that has a molecular weight cut-off using ultrafiltration of 3,000 or more, and having a combined neutral sugar component content and lignin content of 70 wt% or less, by performing step 1 and step 2-1, or step 1 and step 2-2. Step 1: In a reaction system, plant-derived biomass, a solvent containing water in at least a portion thereof, and peroxide and / or peroxy acid are combined and reacted. Step 2-1: Separate out the aqueous phase from the reaction solution after step 1. Step 2-2: Add water and / or a non-water soluble organic solvent to the reaction solution after step 1 to separate the liquid, and separate out the aqueous phase.

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 invention belongs to the technical field of chemical production, and particularly relates to a process and a system for producing epsilon-caprolactone, 70% hydrogen peroxide is used as an oxidizing agent to oxidize succinic anhydride, reaction can be carried out at normal temperature, reaction conditions are mild, the conversion rate is high, water brought in by reactants is consumed, generated peroxy acid is peroxysuccinic acid, and the epsilon-caprolactone can be produced by using the process and the system. Compared with peracetic acid and peracetic acid used in a traditional process, the stability and safety of peracetic acid and peracetic acid are enhanced, meanwhile, peracetic acid is a solid in a reaction solution and is easy to separate out, dehydration can be well achieved, and in the reaction of cyclohexanone and percarboxylic acid, the yield is high. According to the method, water is introduced into the solution, so that the generation of epsilon-glycolic acid, epsilon-acyloxyhexanoic acid, adipic acid, polycaprolactone and other substances caused by hydrolysis, auto-polymerization or oligomerization of epsilon-caprolactone due to introduction of water is avoided, the yield of epsilon-caprolactone is reduced, meanwhile, the reaction product succinic acid is also a solid in the solution, separation can be realized through filtration, high energy consumption in the rectification separation process is avoided, and the method is suitable for industrial production. The separation and purification difficulty of epsilon-lactone is reduced.

The invention 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, the stabilizer is a nitrogen-containing alkaline compound, and an N atom has lone pair electrons. When the specific catalyst composition is used for preparing peroxy acid, the conversion rate of hydrogen peroxide can be gt; the selectivity of the prepared peroxy acid is gt; 70%, and the finally obtained peroxy acid product is used for preparing caprolactone, so that the conversion rate of cyclohexanone is gt; the selectivity of the prepared caprolactone is gt; 95%.

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 disclosure features methods for producing small, halogenated organic compounds derived from an organic acid, such as a peroxy acid.

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 >.