37 results about "Perbenzoic acid" patented technology

The invention discloses a making method of 2 alpha, 3 alpha-epoxy-16 alpha-bromine-5 alpha-androstane-17-ketone as intermediate of steroidal muscular relaxation drug, which comprises the following steps: dissolving epiandrosterone in the benzene; adding catalyst; stirring; heating; refluxing 8-12h; preparing 5 alpha-androst-2-olefin-17-ketone; reacting the 5 alpha-androst-2-olefin-17-ketone and copper bromide in the carbinol to produce 16 alpha-bromine-5 alpha-androst-2-olefin-17-ketone; reacting the 16 alpha-bromine-5 alpha-androst-2-olefin-17-ketone and m-perbenzoic acid in the composite solvent of water and dichloromethane; producing the product through eliminating, bromizing and epoxidising.

The invention relates to a flame-retardant rubber preparation method, wherein the flame-retardant rubber is prepared by mixing the following components by mass fraction: 100 parts of natural rubber, 1.2-1.5 parts of a vulcanizing agent, 0.8-1.0 part of an accelerator CZ, 0.2-0.4 part of an accelerator CZ TMTD, 3.5-4.5 parts of stearic acid, 4.5-5 parts of zinc oxide, 1-2 parts of an an-aging agent 4010, 1-3 parts of liquid paraffin, 30-40 parts of carbon black, 1-5 parts of a flame-retardant synergist, 35-40 parts of ammonium polyphosphate, 10-20 parts of pentaerythrotol, and 10-20 parts of melamine, wherein the flame-retardant synergist is metal organic framework graft functionalized graphene, wherein graphene is functionalized with Benzoic Acid so as to achieve double coordination compounding of the graphene and the metal organic framework. With the flame-retardant rubber of the present invention, the flame-retardant performance of the rubber matrix is significantly improved.

An anti-aging butadiene rubber modified epoxy resin anti-corrosive coating is prepared from: epoxy resin E51, butadiene rubber, dichlorobenzene, peroxybenzoic acid, methyltrioxorhenium, sodium periodate, sodium dihydro-bis(2-methoxyethoxy)aluminate, 2,4-toluene diisocynate, butanediol, silicon sol, potassium hydroxide, a silicon acrylic emulsion, octaphenyl polyoxyethylene ether, benzimidazole, N,N-bis(2-hydroxypropyl)aniline, and chloroform. The anti-corrosive coating has strong salt water resistance and good anti-corrosion property and is toxic-free and environment-friendly.

The invention relates to the field of building waterproofing, and particularly discloses a modified asphalt coating material, a method for preparing the modified asphalt coating material and an asphalt waterproof coiled material. The modified asphalt coating material comprises the following raw materials by weight: 100 parts of matrix asphalt, 0.5 to 3 parts of an asphalt modifier, 40 to 50 parts of asphalt softening oil, 5 to 10 parts of SBS (styrene butadiene styrene); 5 to 10 parts of SBR (Styrene Butadiene Rubber); 40 to 60 parts of rubber powder, and 40 to 60 parts of a powder material. The asphalt modifier is selected from one or more of trioctyl phosphate, triphenyl phosphate, tributyl phosphate, tert-butyl perbenzoate and acetyl tributyl citrate. According to the modified asphalt coating material provided by the invention, by adding the asphalt modifier, the compatibility among the components in the coating material can be effectively improved, so that the durability and low-temperature flexibility of the prepared asphalt waterproof coiled material can be greatly improved, and the application requirements in the field of building waterproofing are met.

The invention provides a method for preparing single-layer graphene. The method includes the steps that mineral acid, benzene sulfonic acid sodium salt and peroxybenzoic acid are added to graphite, a reaction is conducted at the reaction temperature of 20-30 DEG C, then KMnO4 is added, after the mixture is stirred to be uniform, a reaction is conducted at the reaction temperature of 60-65 DEG C, and a claybank solution is obtained; water is added to the claybank solution to conduct dilution, then H2O2 is added till the solution becomes luminous yellow, then filtering is conducted, ethyl alcohol is added to filtrate, the mixture is stirred to be uniform, after filtering is conducted, a filter cake is subjected to acid pickling and then subjected to water washing till the filter cake is neutral, and graphite oxide is obtained; ethidene diamine is added to the graphite oxide, and after a reaction is conducted in an ultrasonic reactor, the single-layer graphene is obtained. The graphene obtained through the method is small in number of layers and not prone to agglomeration, and the problems that the single-layer graphene is stacked again under a natural state, and the surface of the single-layer graphene absorbs oxygen are solved. The one-step stripping and reducing method for preparing the graphene is environmentally friendly and simple, time cost and production cost are saved, large-scale production and application can be achieved, and the method has a wide industrial application prospect.

The invention discloses a making method of 2 alpha, 3 alpha-epoxy-16 alpha-bromine-5 alpha-androstane-17-ketone as intermediate of steroidal muscular relaxation drug, which comprises the following steps: dissolving epiandrosterone in the benzene; adding catalyst; stirring; heating; refluxing 8-12h; preparing 5 alpha-androst-2-olefin-17-ketone; reacting the 5 alpha-androst-2-olefin-17-ketone and copper bromide in the carbinol to produce 16 alpha-bromine-5 alpha-androst-2-olefin-17-ketone; reacting the 16 alpha-bromine-5 alpha-androst-2-olefin-17-ketone and m-perbenzoic acid in the composite solvent of water and dichloromethane; producing the product through eliminating, bromizing and epoxidising.

The invention relates to a preparation method of a special salt spray resistance epoxy resin paint for a wind power blade and belongs to the technical field of coatings. The preparation method comprises the following steps: taking epoxy resin, acrylic resin, amino resin, rosin modified maleic acid resin, polystyrene latex, dimethylolpropionic acid, methyl methacrylate, tert-butyl perbenzoate, polyethylene wax, alcohol nitrocotton, butyl acetate and ethylene glycol butyl ether for uniformly mixing in a mixer; then adding a thickener and a dispersant and uniformly mixing in the mixer;adding a nonionic surfactant, a pigment and packing, uniformly mixing in the mixer, grinding to the fineness of below 20mum and packaging. The epoxy resin paint provided by the invention has good compatibility to the wind power blade made of an epoxy resin material, has a high adhesive force which can reach 1 grade, has good salt spray corrosion resistance and is suitable for coating the marine wind power blade.

The invention discloses an ionic liquid-based metal leaching agent and a gold leaching method. The ionic liquid-based metal leaching agent is formed by mixing peroxybenzoic acid, water and ionic liquid in a ratio of 1:0.3-3:2-5 by mass, and the ionic liquid is 1-hexyl-3-methyl imidazolium chloride, 1-butyl-2,3-dimethylimidazolium chloride or 1-hexyl-3-methylimidazolium dicyandiamide. The invention provides a gold leaching method based on the metal leaching agent, capable of leaching precious metals such as gold, palladium, platinum, rhodium, etc., with fast leaching speed and high extraction rate.

The invention discloses a preparation method of an MOF / MXene / PPy-CelF porous nanomaterial. The preparation method comprises the following steps: S1, preparing an MXene material, an MOF material and a PPy-CelF material; preparing an MXene solution by adopting an HF acid etching method; the preparation method comprises the following steps: preparing a PCN-222 precursor solution from benzoic acid, a porphyrin ligand, zirconium chloride and N, N-diethyl formamide; preparing a PPy-CelF solution by adopting an in-situ polymerization method; s2, preparing an MXene / PCN-222 composite material; preparing an MXene film by an electrophoretic deposition method; a PCN-222 layer is prepared on the MXene film through a rapid electrophoretic deposition technology, and an MXene / PCN-222 double-layer composite film is obtained; and S3, preparing the MOF / MXene / PPy-CelF porous nano material by a dip-coating method. The invention further discloses a corresponding product and application. According to the invention, the MOF material, the MXene and the polymer are compounded in a layered manner, so that the MXene is not stacked, ion transmission is ensured, and the nano composite material has very high reaction active sites and flexibility.

The invention relates to a method for synthesizing 2, 3, 4, 5-four metonym toluene, which comprises the following steps: using 3, 4, 5-three metonym toluene as starting raw material, obtaining the intermediate 2, 3, 4-three metonym-6-methxyl benzaldehyde after 2-bit formylated, obtaining 2, 3, 4-three metonym-6-methxyl benzene after oxidizing and obtaining 2, 3, 4, 5-four metonym toluene after methylamine. The methylamine reagent is cheesed form methyl iodide, methyl sulfate, methyl carbonate, and azimethane; the base is cheesed form caustic soda, caustic potash, potash and sodium hydride; the reagent is cheesed form alcohol, tetrahydropyran, acetone and propylidene chloride; the oxidant is cheesed form hydrogen diode solution and perbenzoic acid and so on. The formylation is N, N-dimethyl formamide solution with the drop phosphorus trichloride temperature below 50 deg. and the reacting temperature 60 deg.-100 deg.

The invention relates to polyester resin film plastic and method for preparing same, wherein the plastic is the mixture of unsaturated polyester resin, polyphenylacetylene, polymethyl methacryate, thickening agent, gasket material and fiber glass, the thickening agent is prepared from peroxybenzoic acid resin, black paste and talcum powder through agitating.

The invention relates to the field of livestock and poultry industry pollutant treatment. Based on malodorous gases and pathogenic microorganisms in livestock and poultry houses, the invention discloses a disinfection deodorant capable of simultaneously and efficiently removing malodorous gases and killing pathogenic microorganisms, wherein the main components of the disinfection deodorant consistof sodium percarbonate, calcium peroxide, sodium persulfate, peroxybenzoic acid, malic acid, hydroxypropyl methyl cellulose and sodium hexametaphosphate. The invention also provides a preparation method of the disinfection deodorant, wherein the disinfection deodorant prepared by the method has the advantages of uniform dispersion of all components, strong adhesion and good stability. According to the application of the disinfection deodorant, hydrogen peroxide, active oxygen (.O), hydroxyl free radicals (.OH) and sulfate free radicals (.SO4) can be rapidly generated, and can efficiently playdisinfection and deodorization roles, existing slow-release components can maintain the cleanness of the poultry house environment for a long time, and action products are clean and free of pollution. The disinfection deodorant has the advantages of simple use method and strong operability in the preparation process, and is suitable for large-batch and large-scale production.

The invention discloses a rapid detection method for the stability and the toxicity of heavy metals in domestic garbage incineration fly ash. The rapid detection method comprises the following steps: dividing a garbage fly ash to-be-determined sample into three parts; detecting solution pH and concentrations of lead ions, chloride ions and calcium ions after the first part of fly ash is mixed with water; detecting the acid neutralizing capacity by dropwise adding an acetic acid solution to be neutral after the second part of fly ash is mixed with the water; detecting the mass percentage of free calcium oxide in the fly ash through benzoic acid-anhydrous ethanol titration after the third part of fly ash is mixed with strontium nitrate and glycerol anhydrous ethanol; finally, comprehensively judging whether the stability of the heavy metals in the fly ash is qualified or not through a plurality of indicators obtained, namely whether the leaching toxicity is up to the standard or not. The rapid detection method disclosed by the invention has the benefits that the problems of long time, low efficiency and less possibility of on-site real-time supervision when a national standard GB leaching toxicity leaching method is used for judging the stability of the heavy metals in the fly ash entering a landfill are solved; a national standard method taking more than 18 hours is changed into a comprehensive judgment method taking less than 1 hour, so that the supervision efficiency of the stability of the heavy metals in the fly ash entering the landfill is effectively improved.

The invention relates to a preparation method for epoxy chloropropane and mainly aims to overcome the problems of a low conversion rate of chloropropene and difficult separation of the product epoxy chloropropane during production of epoxy chloropropane in the prior art. According to the method, chloropropene and peroxybenzoic acid mixed according to a molar ratio are pumped into a reaction vessel and heated to a reaction temperature, a violent reaction with stirring is carried out, a reaction solution is injected to a primary rectifying tower in the process of reaction, the light components consisting of chloropropene and peroxybenzoic acid at the top of the primary rectifying tower flow back to the reaction vessel after condensation, heavy components at the bottom of the primary rectifying tower are pumped into a secondary rectifying tower for secondary rectification, the light component epoxy chloropropane at the top of the secondary rectifying tower undergoes condensation by a condenser at tower top and collection so as to obtain a high purity product, and the heavy component benzoic acid is collected at the bottom of the secondary rectifying tower. The method provided by the invention increases the conversion rate of chloropropene, realizes low-energy consumption, easy, rapid and continuous production and enables yield of the reaction product epoxy chloropropane to be greater than 90%.

The invention provides a method for synthesizing a fluorine-containing pyrimidinone compound, and belongs to the field of organic synthesis. The method does not use a metal reagent and an organic solvent, is environmentally friendly, and is suitable for industrial production. The method comprises the following steps: separately adding the pyrimidinone compound and sodium trifluoromethylsulfinate into a reaction flask for reacting under the action of tert-butyl peroxybenzoate (TBPB) and water at temperature of 25 DEG C to 80 DEG C for 2 to 4 hours; and after completion of the reaction, performing column chromatography to obtain the fluorine-containing pyrimidinone compound. The method can be applied to the synthesis of a trifluoroalkyl-substituted pyrimidinone compound.