265 results about "Benzioc acid" patented technology

A long-term fire retarding biochemical liquid composition including: a dispersing agent realized in the form of a major amount of water, for dispersing alkali metal ions dissolved in the water; a major amount of a first fire retarding agent realized in the form of a primary alkali metal salt of a nonpolymeric saturated carboxylic acid, for example, tripotassium citrate, for providing metal potassium ions dispersed in the water when the at least one alkali metal salt is dissolved in the water to form a mixed retardant solution; a minor amount of a second fire retarding agent realized in the form of a secondary alkali metal salt of a nonpolymeric saturated carboxylic acid, for example, potassium, sodium, calcium and / or magnesium benzoate, for providing benzoate ions dispersed in the water when the secondary alkali metal salt is dissolved in the mixed retardant solution, for functioning as a secondary fire retardant agent.

The invention discloses a button cell bitter agent and a coating method thereof, and relates to the technical field of button cells. The button cell bitter agent comprises the following components in parts by weight: water, denatonium benzoate, sodium chloride and an adhesive. According to the button cell bitterness agent and the coating method, a highly effective protective layer with strong bitterness can be formed, and the whole surface of the button cell is uniformly coated without influencing the electrical property of the cell.

The invention discloses an environment-friendly titanium alloy etching solution as well as a preparation method and an etching method thereof, and relates to the technical field of printed circuit board production. The environment-friendly titanium alloy etching solution comprises the following components in percentage by mass: 10-30% of ammonium fluoride, 5-15% of an oxidant, 0.1-1% of a wetting agent, 0.3-1.5% of a stabilizer, 2-10% of an accelerator and 0.5-3% of a lateral erosion inhibitor. The stabilizer is selected from at least one of Tween 20, Tween 40 and Tween 85; and the accelerator is selected from at least one of sodium methylene dinaphthalene sulfonate, sodium dibutyl naphthalene sulfonate and dodecyl benzoate. The environment-friendly titanium alloy etching solution disclosed by the invention can selectively and quickly etch titanium alloy without corroding a copper surface and other metals, so that etching factors are effectively increased, and the problem of lateral erosion of a fine circuit is solved. Meanwhile, ammonium fluoride is used as a main agent of the etching liquid instead of hydrofluoric acid, so that the environmental pollution can be effectively reduced.

The present invention relates to the technical field of coatings and discloses a method for preparing an EVA waterproof coating. Activated montmorillonite reacts with toluene diisocyanate to obtain isocyanate-modified montmorillonite. EVA is hydrolyzed under the catalysis of potassium hydroxide to obtain hydroxylated EVA. An epoxy trisiloxane intermediate reacts with terephthalic acid under ring-opening esterification with benzyltriethylammonium chloride to obtain p-hydroxytrisiloxane benzoate. P-hydroxytrisiloxane benzoate, hydroxylated EVA, and isocyanate-modified montmorillonite are cross-linked with toluene diisocyanate under the catalysis of stannous octoate, and a defoamer and a dispersant are added thereto and stirred uniformly to obtain an EVA waterproof coating. The EVA waterproof coating prepared by the present invention has good mechanical properties and waterproof properties.

The invention discloses a low-temperature curing PVC plastisol composition for a vehicle and a preparation method of the low-temperature curing PVC plastisol composition. The invention relates to a low-temperature curing PVC plastisol composition for vehicles, which is prepared from the following raw materials in parts by weight. Comprising 5 to 15 parts of polyvinyl chloride-vinyl acetate copolymer resin, 5 to 15 parts of homopolymerized PVC paste resin, 1 to 10 parts of blended PVC paste resin, 30 to 40 parts of a compound plasticizer, 1 to 10 parts of a hydrocarbon solvent, 0.5 to 1.5 parts of terminated polyurethane, 0.5 to 2 parts of polyamide, 0.5 to 1 part of a thixotropic agent, 30 to 45 parts of an inorganic filler, 1 to 5 parts of a stabilizer and 1 to 5 parts of a moisture absorbent. The compound plasticizer is prepared from diethylene glycol dibenzoate, isodecyl benzoate and diisononyl phthalate. The PVC plastisol composition disclosed by the invention is a low-temperature and short-time curing material, and can be cured under the conditions that the baking temperature is 125 DEG C and the baking time is 20 minutes.

The invention relates to the technical field of coatings, in particular to a low-temperature curing type fluorocarbon coating for an aluminum alloy and a preparation method of the low-temperature curing type fluorocarbon coating. The preparation method comprises the following steps: adding eugenol, potassium carbonate and decafluorobiphenyl to obtain modified biphenyl; and adding m-chloroperoxybenzoic acid to prepare the reinforcing agent. And performing surface modification on the linear silicon dioxide filler, the flaky silicon dioxide filler and the dendritic silicon dioxide filler by using gamma-epoxypropoxy propyl trimethoxy silane to obtain the epoxy modified wear-resistant filler. The preparation method comprises the following steps: adding epoxy resin and the epoxy modified wear-resistant filler into xylene, ultrasonically stirring, adding fluorocarbon resin, a reinforcing agent and a curing agent, and continuously ultrasonically stirring to obtain the fluorocarbon coating. The fluorocarbon coating prepared by the invention has good adhesion performance, wear resistance and mechanical strength, so that the fluorocarbon coating has a wide application prospect in the technical field of coatings.

The invention discloses a high-temperature-resistant nylon composite material and a production process thereof, and belongs to the technical field of nylon composite material preparation. The high-temperature-resistant nylon composite material is prepared from the following components in parts by weight: 35-48 parts of nylon resin, 7-12 parts of a heat-resistant agent, 3-8 parts of a modified anticorrosive agent, 1-3 parts of calcium stearate, 1-3 parts of a flame retardant and 2-10 parts of glass fibers, and the heat-resistant agent is prepared from 2, 4-dinitrophenol, hydrazine hydrate, p-nitrobenzoic acid, triethylamine, polyphosphoric acid and 2, 4-dinitrophenol. The nylon composite material is prepared from 2, 2 '-bis (3, 4-dicarboxylic acid) hexafluoropropane dianhydride, and the modified anticorrosive agent is prepared from fluororubber, benzyltriethylammonium chloride, lithium aluminum hydride and isophorone diisocyanate. The nylon composite material prepared by the method has excellent high temperature resistance and corrosion resistance.

The invention relates to an aroma durability improving agent and a preparation method thereof, an essence and a shampoo product, and the aroma durability improving agent comprises the following components in percentage by weight: 40%-60% of a component A, 1%-0.5% of a component B, 10%-20% of a component C, 10%-20% of a component D, 5%-10% of isooctyl salicylate, 10%-20% of a perfume component and the balance of a solvent, wherein the component A is prepared from 2-[[3-[2-methyl-4-(2-methylpropyl) phenyl] propylidene] amino] methyl benzoate; the long-lasting fragrance can be effectively improved, the preparation process is simple, the production cost is low, the compatibility is good, and the long-lasting fragrance is suitable for various essences or hair washing products.

The invention belongs to the technical field of urine wastewater treatment, and particularly discloses a novel corrosion-resistant slow-release product for urine wastewater and a preparation method of the novel corrosion-resistant slow-release product. Sucrose, isomaltitol, a Kathon solution, citric acid, sorbic acid, benzoic acid and sodium benzoate are used as main raw materials to prepare a sustained-release product. The slow-release product has the effects of preventing corrosion and odor of urine. The slow-release block can effectively inhibit hydrolysis of urea in urine wastewater, and has good corrosion-resistant and odor-resistant effects; the hardness is higher, and powder is not easy to crack after long-time storage; the dissolvability is good, the toxicity is low and the environment-friendly effect is realized. The method is simple in preparation process flow, high in repeatability, low in equipment requirement, low in production cost and easy for industrial batch production.

The invention relates to the technical field of polymer dye synthesis, and discloses a monomer for a blue polyester fiber and a preparation method thereof.According to the monomer for the blue polyester fiber, 1, 4-arylamino substituted anthraquinone serves as a color development mother nucleus, a benzoate group is introduced to aryl of the 1, 4-arylamino substituted anthraquinone mother nucleus, and the monomer for the blue polyester fiber is obtained; the benzoate group is connected with the chromophoric parent nucleus through a carbon-carbon bond; the molecular terminal of the monomer for the blue polyester fiber is connected with an exposed ester group through an aryl group, and the exposed ester group is used for transesterification with dihydric alcohol under the melt polycondensation condition of polyester. The novel monomer for the blue polyester fiber, provided by the invention, has excellent color development performance and thermal stability, can be directly used for in-situ synthesis of blue polyester and can be directly used for melt spinning, and the color fastness and coloring uniformity of a product are improved; meanwhile, the monomer for the blue polyester fiber, provided by the invention, is simple in preparation method, low in cost and easy for large-scale production.

The invention relates to the technical field of paint, and discloses high-gloss spray paint for motorcycles and a spraying process of the high-gloss spray paint. The high-gloss spray paint is prepared from the following raw materials in parts by mass: 8 to 12 parts of polyethylene glycol-polycaprolactone-acrylate, 15 to 20 parts of sulfydryl acrylate, 20 to 30 parts of acrylic resin, 6 to 10 parts of additive, 8 to 15 parts of metallic pigment, 20 to 30 parts of amino resin, 1 to 2 parts of flatting agent, 15 to 30 parts of solvent, 1 to 2 parts of solvent oil and 0.02 to 0.05 part of photoinitiator. The additive is prepared from silane modified tert-butyl methyl benzoate, double-bond modified tert-butyl methyl benzoate and an assistant cross-linking agent according to the mass ratio of (1 to 2) to (5 to 6) to 1; the preparation method of the assistant crosslinker comprises the following steps: adding 5-amino-2, 4-di-tert-butyl methyl benzoate and triphenylmethane triisocyanate into tetrahydrofuran, uniformly mixing, stirring to react for 6-8 hours at 70-90 DEG C, and removing the solvent to obtain the assistant crosslinker.

The present invention belongs to the field of cosmetics technology, specifically to a sunscreen and whitening composition, its preparation method, and its application. The present invention utilizes a combination of various functional ingredients, including ethylhexyl triazone, diethylamino hydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, niacinamide, glabridin, ascorbic acid derivatives, sodium hyaluronate, bisabolol, dipotassium glycyrrhizate, aloe vera juice, squalane, Chuanxiong extract, and Scutellaria baicalensis extract, to synergistically block UVA and UVB rays across the entire wavelength range and provide five-fold benefits: sunscreen, whitening, moisturizing, soothing, and repairing. This addresses the problem of many products on the market that offer only sunscreen without whitening and skincare benefits, providing effective skincare and protection.

The invention provides a chemical or enzymic method regenerated PET and PTA screening method, which comprises the following steps: pretreating a PET or PTA sample 1, and measuring the content of p-toluic acid, the content of p-carboxybenzaldehyde and the content of m-terephthalic acid by using high performance liquid chromatography; the method comprises the following steps: pretreating a PET or PTA sample 2, pretreating by using a high-temperature pyrolysis method, and measuring an isotope ratio of oxygen-18 to oxygen-16 by using an isotope ratio mass spectrometer; the method comprises the following steps: calculating a cleanliness index, an oxy-18 index and a bottle flake index by using a formula based on a test result, and classifying PET and PTA samples through a decision tree according to the indexes; combining and mixing the PET and PTA products based on the classification result and the requirements of downstream customers on the regeneration method and the regenerated material content; the method is convenient, accurate and reliable, the classification result is objective, the screening efficiency of PET and PTA regenerated by a chemical or enzyme method can be improved, and the economic cost is saved.

The invention provides a dyeable high-temperature-resistant modified meta-position aramid fiber and a preparation method thereof. The modified meta-aramid fiber is mainly prepared from a spinning solution prepared from m-phenylenediamine, methyl 3, 5-diaminobenzoate, 3, 3 '-diaminodiphenyl sulfone and an isophthaloyl dichloride copolymer through dry spinning, and the dye uptake of a disperse dye is not lower than 85%; the thermal decomposition temperature is not less than 400 DEG C. The preparation method comprises the following steps. S1, fully continuous polymerization; s2, continuously neutralizing and conveying; s3, direct spinning; and S4, fiber forming and post-treatment. The method has the advantages that (1) the quality difference between batches in the traditional intermittent method is eliminated, and the uniformity and stability of the product performance are realized; and the preparation process is compact, the production efficiency is high and the energy consumption is low. And (2) the dyeing performance of the prepared fiber is obviously improved, the inherent high-temperature-resistant characteristic of the aramid fiber is maintained, and the mechanical property is excellent. And (3) the application range of the meta-position aramid fiber is expanded.

The invention discloses an advanced stabilizer for ammonia-free natural rubber production, which is made of the following ingredients: chitosan, sodium diacetate, methyl parahydroxybenzoate, alginate, citric acid, sodium sorbate, and a special active agent; compared with conventional commercially available ammonia-containing preservatives, the natural rubber latex preservative prepared by the invention does not contain ammonia, and not only has a longer shelf life, but also, because it does not contain ammonia, it can avoid the tedious deamination of downstream manufacturers, improve production efficiency, and save production costs. By adopting the natural rubber latex preservative prepared by the invention, the active ingredients contained can act on the cell wall and cell membrane of microorganisms, and by destroying or damaging the cell wall of the microorganism, the synthesis mechanism of the cell wall of the microorganism is interfered, resulting in the leakage of substances in the microorganism cell, thereby inhibiting the growth and reproduction of the microorganism and improving the stabilizing effect on natural rubber latex.

The invention provides a high-stability wear-resistant bio-based hydrophobic resin composition, a dental material, a preparation method and application, and relates to the technical field of biomedical materials. The invention provides a high-stability wear-resistant bio-based hydrophobic resin composition. The coating is prepared from epoxy soybean oil acrylate, triethylene glycol dimethacrylate, perfluoroalkyl acrylate, hydrophilic nano silicon dioxide, hydrophobic nano silicon dioxide, gamma-methacryloyloxypropyltrimethoxysilane, camphorquinone and ethyl 4-dimethylaminobenzoate. According to the invention, epoxy soybean oil acrylate is used as a resin matrix to replace common bisphenol A resin, so that the adhesive is more environment-friendly and has sustainability; and hydrophilic nano silicon dioxide and hydrophobic nano silicon dioxide are introduced, so that the hydrophobic stability of the material is improved while the mechanical property is enhanced, and the hydrophobic property is not easy to decline after cold and hot cycling treatment.

The invention belongs to the field of inorganic nano materials and environment, and provides a preparation method and application of a high-efficiency and low-consumption heterogeneous catalyst based on a light-Fenton system. The invention aims to solve the technical bottlenecks of unrecoverable catalyst, narrow pH application range (needing an acidic environment), low H2O2 utilization rate, slow Fe ion circulation rate and the like in the traditional Fenton reaction. According to the main scheme, the preparation method comprises the following steps: preparing Fe3O4 nano-microspheres: dissolving FeCl3. 6H2O, Na3Cit.2H2O and NaOAc in ethylene glycol according to a mass ratio, magnetically stirring to form a uniform precursor, transferring the uniform precursor into a reaction kettle for reaction, cooling, magnetically separating or centrifugally separating a product, washing and drying to obtain a powdery product; and preparing the Fe3O4 / UIO-66-NH2 (at) BA composite material: dispersing Fe3O4 nano microspheres and ZrCl4 in DMF for ultrasonic treatment, adding NH2-BDC and benzoic acid for continuous ultrasonic treatment, transferring into a reaction kettle for reaction, cooling, collecting precipitates through magnetic separation or centrifugation, washing, and performing vacuum drying to obtain the Fe3O4 / UIO-66-NH2 (at) BA.

The invention relates to a PET material as well as a preparation method and application thereof. The PET material is prepared from the following components in parts by weight: 75 to 95 parts of PET resin, 2 to 10 parts of PCTG, 3 to 8 parts of flexibilizer, 2 to 5 parts of glass flake and 0.2 to 1 part of poly alkyl glycol dibenzoate. The toughening agent comprises an ethylene-methacrylic acid copolymer and / or ethylene-butyl acrylate. According to the PET material provided by the invention, the PET resin and the PCTG are taken as base materials, the ethylene-methacrylic acid copolymer and / or ethylene-butyl acrylate are / is taken as a toughening unit, the glass flakes are taken as a reinforcing framework, and the poly alkyl glycol dibenzoate is taken as a crystallization inhibitor, so that the PET material has good transparency through the design of all the components; meanwhile, the PET material has good strength and rigidity and can well meet the high-performance requirements of the fields of low-temperature food packaging industry and the like on the PET material.

The invention discloses Leishan fish sauce sour essence as well as a preparation method and application thereof. The leishan fish sauce acid essence is prepared from ethyl acetate, absolute ethyl alcohol, ethyl isovalerate, ethyl hexanoate, isoamyl alcohol, furfuryl alcohol, ethyl lactate, ethyl caprylate, acetic acid, diethyl succinate, methyl salicylate, ethyl benzoate, ethyl laurate, hexanoic acid, phenethyl alcohol, 4-methyl guaiacol, ethyl myristate, ethyl palmitate, ethyl oleate, capsicum oleoresin, ethyl phenylacetate and ginger oil. And lactic acid, glycerol triacetate, ocimene, ethyl isovalerate, ethyl butyrate, anethole and phenylacetaldehyde. The Leishan fish sauce sour essence disclosed by the invention is soft and harmonious in overall fragrance, natural and vivid, still has stable flavor characteristics at high temperature, can make up the problem of flavor deficiency in sour soup products, realizes accurate reproduction and controllable release of composite fragrance, improves the standardization level of products, and effectively improves the preference degree of consumers.

This invention discloses a low-VOCs, low-odor environmentally friendly material for the production of sealing strips for passenger vehicles and its preparation method, belonging to the field of polymer materials technology. The technical solution includes the following raw materials in parts by weight: 100 parts PVC resin; 5 parts stabilizer; 40-60 parts plasticizer; 0.4-0.6 parts lubricant; 1.3-1.5 parts antioxidant; 0.3-0.4 parts ultraviolet absorber; 0.3-0.5 parts deodorizer A; 0.8-1.0 parts deodorizer B; 10-25 parts light active calcium carbonate; 1.0-1.2 parts pigment; deodorizer A is a complex of zinc amino acid, and deodorizer B is benzoic anhydride-intercalated modified aluminum-magnesium hydrotalcite. This invention can capture free, irritating small-molecule alcohols and convert them into esters with milder odors, effectively preventing alcohols from being converted into irritating ethers and ketones during processing, thus reducing the odor and VOCs of passenger vehicle sealing strips.

The invention discloses a temperature-control bubble greenhouse film and a preparation method thereof, and belongs to the technical field of macromolecular agricultural greenhouse films. The temperature-control bubble shed film is prepared from the following raw materials in parts by weight: 65 to 79 parts of modified EVOH, 16 to 24 parts of foam stabilizing master batch, 10 to 17 parts of linear low-density polyethylene, 2 to 6 parts of polyethylene glycol, 12 to 20 parts of maleic anhydride grafted polypropylene, 2 to 5 parts of diglycerol stearate and 3 to 7 parts of dioctyl phthalate. The modified EVOH is prepared from the following raw materials: an ethylene-vinyl alcohol copolymer, isobornyl methacrylate and tert-butyl peroxybenzoate; the foam stabilizing master batch is prepared from the following raw materials: EVA (Ethylene Vinyl Acetate) resin particles, polyether modified polydimethylsiloxane, hydroxypropyl methyl cellulose, nano calcium carbonate, nano titanium dioxide and maleic anhydride grafted polyethylene. The temperature-control bubble greenhouse film provided by the invention has excellent heat insulation and temperature control effects, and can still maintain better mechanical properties in a low-temperature environment.

This invention relates to the field of coating technology, specifically to a low-temperature curing fluorocarbon coating for aluminum alloys and its preparation method. The invention involves adding eugenol, potassium carbonate, and decafluorobiphenyl to obtain modified biphenyl; then adding m-chloroperoxybenzoic acid to prepare a reinforcing agent. Next, γ-epoxypropoxypropyltrimethoxysilane is used to surface modify linear silica fillers, lamellar silica fillers, and dendritic silica fillers to obtain epoxy-modified wear-resistant fillers. Epoxy resin and epoxy-modified wear-resistant fillers are added to xylene, ultrasonically stirred, and then fluorocarbon resin, reinforcing agent, and curing agent are added, followed by continued ultrasonic stirring to obtain the fluorocarbon coating. The fluorocarbon coating prepared by this invention exhibits excellent adhesion, wear resistance, and mechanical strength, thus showing broad application prospects in the field of coating technology.

The present application relates to the technical field of oil and gas production, and specifically discloses a drilling fluid and a preparation method thereof. A drilling fluid, the raw materials of which include: 30-50 parts of coconut oil heptyl ester derivative; 20-30 parts of glyceryl stearate; 20-30 parts of capric triglyceride; 15-20 parts of octadecyl paraben; 10-20 parts of polystyrene-coated paraffin microcapsules; 5-10 parts of calcium chloride; 1-5 parts of emulsifier; 1-5 parts of lightener; 1-5 parts of fluid loss reducer; 10-20 parts of water. The drilling fluid of the present application has strong low temperature resistance and good rheology, and is suitable for oil and gas drilling work under low temperature conditions.

The present invention relates to an aqueous PI resin and its application in an aqueous insulating paint. The aqueous PI resin is prepared by the following method: By weight, 80 - 130 parts of tung oil anhydride, 100 parts of polyfunctional epoxy resin, 20 - 50 parts of p-aminobenzoic acid and 210 - 270 parts of diethylene glycol tert-butyl ether are mixed and dispersed evenly, then heated to 120 °C while dispersing and maintained for 3 h, and then cooled, filtered and discharged. When the aqueous PI resin of the present invention is applied to an aqueous insulating paint, the film has a fast curing speed and low dielectric loss. At the same time, the coating has good heat resistance, adhesion, acid and alkali resistance, electrical properties, hardness and flexibility, and can meet the requirements of the product performance for both enameled wire paint and silicon steel sheet paint. Moreover, it is environmentally friendly and has low VOC emissions.

The utility model belongs to the technical field of chemical production, and particularly relates to a monoethanolamine benzoate synthesis production system which comprises a first raw material tank, a second raw material tank, a reaction kettle, an intermediate tank and a centrifugal machine, the first raw material tank and the second raw material tank are respectively communicated with the reaction kettle through pipelines, and an output port of the reaction kettle is connected with an inlet of the intermediate tank through a pipeline. The system is characterized in that the system is arranged on a multi-layer frame, the first raw material tank and the second raw material tank are arranged on the top layer, the reaction kettle is located on the next layer, the intermediate tank is located on the second lower layer, the centrifugal machine is located on the third lower layer, the pipelines between all the layers of equipment are gravity self-flowing pipelines, and self-control valves are arranged on the pipelines; and flow meters are respectively arranged on the connecting pipes between the raw material tank I and the reaction kettle and between the raw material tank II and the reaction kettle. The gravity gradient self-flowing system has the advantages that by the adoption of the gravity gradient self-flowing system, the use amount of centrifugal pumps in the system is reduced, energy consumption is greatly reduced, and noise is low.

The present application relates to the field of non-woven fabric technology, and specifically discloses a biodegradable non-woven fabric and its preparation method. The non-woven fabric is mainly made of the following raw materials in parts by weight: 100 parts of polypropylene, 1-2 parts of biodegradable masterbatch, 6-8 parts of modified chitosan, 3-5 parts of maleic anhydride grafted polypropylene, and 1-2 parts of antioxidant; the modified chitosan is obtained by treating chitosan with sodium hydroxide, 1-chlorododecane, and 4-(2-chloroethane acylamino) ethyl benzoate. The biodegradable non-woven fabric has the advantages of high breaking strength and good degradability, expands the scope of application, can solve the environmental pollution problem caused by the difficulty of degradation of traditional polypropylene non-woven fabrics, and meets market demand.

A rizatriptan microneedle patch, a preparation method therefor, and use thereof. The rizatriptan microneedle patch comprises a substrate and a needle body arranged on a surface of the substrate. The composition of the needle body comprises rizatriptan benzoate and a skeleton material. The skeleton material comprises a combination of dextran and trehalose, copovidone, a combination of polyvinyl alcohol and dextran, a combination of hypromellose and dextran, or a combination of sodium carboxymethyl cellulose and dextran. The rizatriptan microneedle patch has high mechanical strength and cumulative drug permeation.

This invention discloses a method for preparing tert-butyl benzoate peroxide using a microchannel reactor, comprising the following steps: adding liquid alkali to tert-butyl hydroperoxide, allowing it to stand and separate into layers, and obtaining the lower sodium salt; passing the obtained sodium salt into the microchannel reactor, simultaneously passing benzoyl chloride into the microchannel reactor for mixing and reaction; passing the material emanating from the microchannel reactor into an RTB reactor for incubation and reaction to obtain crude tert-butyl benzoate peroxide; purifying the crude tert-butyl benzoate peroxide to obtain tert-butyl benzoate peroxide. This invention employs continuous feeding and achieves the synthesis reaction through a microchannel reactor, reducing the reaction time from several hours to tens of seconds to several minutes, significantly improving reaction efficiency. The entire reaction process in the microchannel reactor used in this invention is a continuous reaction, which is safe and environmentally friendly, has high production efficiency, requires a small equipment footprint, is simple to operate, reduces manual operation, and lowers production costs.

The invention relates to the technical field of circulating water treatment, in particular to a method for jointly reducing COD (Chemical Oxygen Demand) and hardness of chloride ions and calcium and magnesium in circulating water. Circulating water firstly passes through a multi-medium filter to reduce the turbidity in the circulating water, then the circulating water enters an anion exchange column, chloride ions, sulfate radicals and other inorganic anions and oxalate, formate, benzoate radicals, acetate and other organic anions contributing COD in the circulating water are replaced with hydroxyl radicals, and at the moment, the pH of outlet water of the circulating water is 13-14; effluent of the exchange column enters a sloping plate sedimentation tank, 4% sulfuric acid is added into an inlet of the sedimentation tank to adjust the pH to be 7-8.5, and effluent of the sloping plate sedimentation tank is purified circulating water. According to the method, the scaling possibility of the circulating water is effectively reduced, the water quality of the circulating water can be remarkably improved, for example, after the circulating water is adsorbed by the ion exchange column, the COD removal rate is greater than 85%, the chloride ion removal rate is higher than 80%, and after the circulating water is settled by adding sulfuric acid into the inclined plate settling tank, the calcium and magnesium hardness removal rate is not lower than 50%.

The present invention discloses an environmentally friendly titanium alloy etching solution, its preparation method and etching method, which relate to the technical field of printed circuit board production. The environmentally friendly titanium alloy etching solution comprises the following components in mass percentage: ammonium fluoride 10-30%, oxidant 5-15%, wetting agent 0.1-1%, stabilizer 0.3-1.5%, accelerator 2-10%, side etching inhibitor 0.5-3%; the stabilizer is selected from at least one of Tween 20, Tween 40, and Tween 85; the accelerator is selected from at least one of sodium methylene bisnaphthalene sulfonate, sodium dibutylnaphthalene sulfonate, and dodecyl benzoate. The environmentally friendly titanium alloy etching solution of the present invention can selectively and rapidly etch titanium alloy without etching copper surface and other metals, effectively improving the etching factor and solving the problem of side etching of fine lines. At the same time, since ammonium fluoride is used instead of hydrofluoric acid as the main agent of the etching solution, environmental pollution can be effectively reduced.