43 results about "Sodium Phenolate" patented technology

The invention provides electroplating liquid, an electroplating method, an alloy bump and a preparation method of the alloy bump. The electroplating solution comprises the following components with mass concentration: 5-20 g / L of water-soluble cyanogen-containing gold salt, 1-15 g / L of water-soluble silver-containing salt, 0.5-5 g / L of cobalt citrate, 1-10 g / L of a refiner, 20-100 g / L of conductive salt, 10-90 g / L of a compound complexing agent and the balance of deionized water. The refining agent is selected from one or more of sodium lignin sulfonate, 5-nitroguaiacol sodium salt, sodium carboxymethyl cellulose and sodium alginate. Cobalt citrate and a specific substance are selected as refiners, so that the prepared gold-silver alloy bump is high in hardness and low in surface roughness; and through matching of the complexing agent, the antioxidant and the stabilizer, the oxidation resistance and the stability of the electroplating liquid are greatly improved, and the service life is prolonged.

The invention discloses a co-extrusion foam board and a preparation method thereof, and relates to the technical field of plastic boards. When the co-extrusion foam board is prepared, firstly, diphenylmethane diisocyanate reacts with polycarbonate diol, hydroxyl-terminated hydrogen-containing silicone oil, diethylene glycol and ethyl alcohol to prepare polyurethane master batches; bamboo powder is subjected to secondary carbonization, iron oxide loading and silane coupling agent modification, and modified magnetic bamboo charcoal powder is prepared; the preparation method comprises the following steps: reacting phosphonitrilic chloride trimer with sodium 2-allyl phenolate and sodium phenolate to prepare a flame-retardant cross-linking agent; the preparation method comprises the following steps: blending polyurethane master batch, modified magnetic bamboo charcoal powder and a flame-retardant cross-linking agent, extruding and foaming by using supercritical carbon dioxide to obtain a foaming core layer, and co-extruding the foaming core layer and a non-foaming surface layer obtained by modifying and extruding polyethylene glycol terephthalate to obtain the co-extruded foaming board. The prepared co-extrusion foam board has good impact strength and bending strength and good flame retardance, heat insulation, sound insulation and electromagnetic shielding performance.

The utility model relates to the technical field of phenol sodium salt treatment, and discloses a phenol sodium salt decomposition and crude phenol refining device which comprises a shell, an inner container is arranged in the shell, the top of the shell is connected with a top cover through a bolt, the top end of the top cover is fixedly connected with a supporting plate, the inner side of the supporting plate is rotatably connected with a rotating rod, and the outer surface of the rotating rod is fixedly connected with a pulley. One end of the hose is fixedly connected with a pipe joint, and one end of the pipe joint is in threaded connection with a flushing pipe. After the reaction is finished, the washing pipe enters the inner container through the inlet pipe, the booster pump pumps water, and the inner container, the stirring rod and the stirring paddle are washed through the high-pressure spray head of the washing pipe, so that raw materials are prevented from being adhered to the outer surfaces of the parts, corrosion possibly caused by long-term adhesion of the raw materials is avoided, the washing operation can be timely eliminated, and the service life of the raw materials is prolonged. Therefore, the service life of key components such as the inner container is prolonged, and long-term stable operation of the device is ensured.

The present invention belongs to the technical field of wastewater treatment, and relates to a device and method for electro-oxidation treatment of sodium phenolate sewage, comprising a treatment frame body, partition plates, cover caps, a feeding frame, a filter screen and a liquid inlet pipe. Three partition plates are connected to the treatment frame body at intervals, and the partition plates divide the cavity inside the treatment frame body into four chambers. Three cover caps are connected to the top of the treatment frame body, and the three cover caps respectively block the three chambers on the right side of the treatment frame body. A feeding frame is connected inside the leftmost chamber, and a filter screen is arranged at the bottom of the feeding frame. One side of the treatment frame body is communicated with a liquid inlet pipe, and a drain port is opened on the other side of the treatment frame body, and a valve is arranged at the drain port. When treating sodium phenolate sewage, the present invention can add the medicament through the injection groove on the feeding block. Each time the added medicament just fills one injection groove, ensuring the consistency of the added amount of the medicament, without manual weighing, being more convenient to operate and having higher treatment efficiency.

The application belongs to the technical field of chemical industry, and particularly relates to a mixed cresol separation method, which comprises selective oxidation, filtration, neutralization, secondary filtration and rectification processes in sequence. The selective oxidation comprises: adding mixed cresol, sodium hydroxide, sodium methoxide, a solvent and a catalyst into an oxidation kettle, heating, and introducing oxygen for selective oxidation. In the selective oxidation step, sodium methoxide is added, which can react with water obtained in a salification reaction step (i.e. a reaction step of sodium hydroxide and mixed cresol to generate sodium phenate and water) to generate methanol and sodium hydroxide, thereby promoting the selective oxidation reaction and improving the yield.

This application discloses a photocatalytic method for dehydrogenating sodium cyclohexoxide, comprising the following steps: mixing sodium cyclohexoxide with a catalyst, and conducting a photocatalytic reaction under light irradiation to obtain sodium phenolate; the catalyst is selected from metal catalysts and / or supported metal catalysts; the metal catalyst is Rh metal particles; the supported metal catalyst is selected from at least one of Pt / TiO2, Pd / TiO2, Rh / TiO2, Rh / Al2O3, and Rh / C. The photocatalytic sodium cyclohexoxide dehydrogenation method provided in this application can achieve rapid hydrogen release from sodium cyclohexoxide without external heating, and has a faster response speed and a faster dehydrogenation rate compared to thermal catalysis. Furthermore, the photocatalytic sodium cyclohexoxide dehydrogenation method of this application can be carried out under sunlight, and the use of solar energy can effectively reduce the cost of sodium cyclohexoxide dehydrogenation, which is beneficial for its large-scale application.

The invention discloses a texturing process of a single crystal battery piece. The texturing process comprises the following steps: S1, performing pre-texturing treatment on a silicon wafer by adopting pre-texturing liquid; s2, texturing the silicon wafer by adopting texturing liquid; the prefabricated down liquid comprises polyvinylpyrrolidone and polyvinyl alcohol; the texturing liquid comprises inorganic alkali, a defoaming agent and a catalyst; the inorganic base is selected from at least one of sodium hydroxide and potassium hydroxide, and the defoaming agent is selected from at least one of dodecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, diethylene glycol, triethylene glycol and tetraethylene glycol. The catalyst is selected from at least one of sodium 5-nitro-o-methoxyphenolate, sodium o-nitrophenolate and sodium p-nitrophenolate. A nucleating agent solution is adopted to carry out texturing pretreatment on a silicon wafer, then alkali treatment texturing is carried out on the silicon wafer, and the liquid changing period of the texturing process is long; and the cell pieces prepared by taking the polyvinylpyrrolidone and the polyvinyl alcohol as the combined nucleating agent are relatively small in inter-piece color difference.

The invention relates to a dispersible oil suspending agent and application thereof, the dispersible oil suspending agent comprises glyphosate, a growth regulator, an emulsifier, a dispersant, a thickener and a dispersion medium, the growth regulator is forchlorfenuron, 6-benzylaminopurine and compound nitrophenolate sodium, and the mass ratio of forchlorfenuron to 6-benzylaminopurine to compound nitrophenolate sodium is 1: (0.6-1.2): (6-20). By adding the growth regulator into the glyphosate dispersible oil suspending agent and optimizing the components and dosage of the growth regulator, the weeding effect of the glyphosate dispersible oil suspending agent under the low-temperature condition is greatly improved, and the weed death time of glyphosate is shortened.

The present invention belongs to the technical field of chemical detection, and specifically relates to a method for quantitatively analyzing the content of dimethyl sulfate by derivatization. The method uses sodium phenol as a derivatization reagent to form a derivative anisole with dimethyl sulfate, and the peak area of ​​anisole in a test solution is measured by gas chromatography-mass spectrometry to calculate the content of dimethyl sulfate. Compared with the prior art, the analytical method has the following advantages: (1) the derivative product prepared by the present invention is stable within 11 hours, and the peak areas of the target product are 32224, 33873, 31960, and 31560 at 0, 2, 6, and 11 hours, respectively, with an RSD of 3.14%, a good peak shape, and no significant change in the peak shape of the target product due to programmed temperature increase; (2) the method has high sensitivity. After detection, the quantitative limit of dimethyl sulfate is 0.1057 ng, and the detection limit is 0.0032 ng, which fully meets the determination requirements; (3) the derivatization reagent and dimethyl sulfate can immediately undergo a derivatization reaction, which greatly improves the overall detection efficiency and is simple to operate.

The application relates to the technical field of phosphazene flame retardants, and particularly discloses a high-performance low-cost phosphazene flame retardant and a preparation method thereof. The method comprises the following steps: first, purifying an industrial by-product mixed sodium phenate to obtain anhydrous mixed sodium phenate; then, under the action of a nucleophilic substitution promoter composed of an alkaline compound and a polar aprotic solvent, step-by-step nucleophilic substitution reaction is carried out by controlling feeding sequence, reaction temperature and other conditions; after the reaction is completed, high-purity phosphazene flame retardant products are obtained through vacuum concentration and water washing precipitation; meanwhile, unreacted sodium phenate and solvents are recycled and reused; and a complete green closed-loop production process is constructed. Through the unique promoter system and process design, the application effectively coordinates the reaction activities of different components in the mixed sodium phenate, inhibits side reactions, significantly reduces the cost of raw materials, ensures excellent thermal stability and flame retardant efficiency of the products, realizes near-zero emission and maximization of resource utilization, and has an outstanding industrial application prospect.

The application provides a high-efficiency humidity-controlling energy-saving building material, a preparation method and application thereof, and the preparation method comprises the following steps: step one, preparing a porous substrate; step two, immersing the porous substrate in a humidity-controlling solution for a period of time, and taking out the porous substrate to obtain the high-efficiency humidity-controlling energy-saving building material, wherein the humidity-controlling solution comprises a humidity-controlling composition, the humidity-controlling composition comprises at least three kinds of light metal salts and one other kind of substance, the light metal salts are selected from calcium chloride, copper sulfate, potassium citrate, sodium malate, sodium citrate, sodium phenolate, ammonium chloride, potassium chloride, ammonium lactate, potassium carbonate, lithium bromide and sodium chloride, and the other kind of substance is selected from xanthan gum, silicon dioxide, sodium polyacrylate and sodium hexametaphosphate.

The present invention belongs to the technical field of p-aminophenol preparation, and in particular to a preparation method for preparing p-aminophenol. The following steps are included, after sodium p-nitrophenol is neutralized by acid addition, p-nitrophenol is obtained after cooling and centrifugation, and an antioxidant is added to sodium p-nitrophenol before neutralization; p-nitrophenol is added to the first solvent, and then a catalyst is added, and a hydrogenation reaction is carried out under a hydrogen atmosphere, and the reaction is filtered after the reaction, and the obtained filtrate is placed in a crystallization kettle and the crystallization kettle atmosphere is replaced with a protective gas, and an antioxidant is added, and the temperature is reduced and crystallized, and centrifugation is performed to obtain a crude p-aminophenol; the crude p-aminophenol is added to an antioxidant solution, and after stirring at room temperature, centrifugation, and drying, refined p-aminophenol is obtained. The present invention controls the content of impurities 4,4'-diaminodiphenyl ether in p-aminophenol to less than 0.1%, and the content of impurities 4,4'-diaminodiphenyl ether in p-aminophenol produced in multiple batches is controlled to be stable, and the product qualification rate is high.

The present invention provides a method for recovering and treating a 4,4-dinitrodiphenyl ether by-product, and belongs to the technical field of organic synthesis. The present invention adjusts the pH value to 3-4 to remove substances that can react with acid in the by-product salt, and the functions of ferrous sulfate and the first activated carbon are to decolorize and remove the color of the 4,4-dinitrodiphenyl ether material. The pH value is then adjusted to 6-8 to remove ferrous sulfate, and then a second decolorization is performed to obtain a white solid salt. The function of hydrogen peroxide is to remove organic matter in the reaction, and the resin column elution ensures that p-chloronitrobenzene, sodium p-nitrophenolate, and DNP organic matter are completely removed. Finally, a solid salt having a sodium chloride content of ≥99.1g / 100g and a TOC (total organic carbon) of less than 50mg / kg is obtained. The obtained solid salt does not have the odor of p-nitrochlorobenzene, meets the industrial salt standard, and realizes the recovery and use of the 4,4-dinitrodiphenyl ether by-product, thereby reducing costs.

The invention relates to a salicylic acid production method for comprehensively utilizing wastewater, comprising the following steps: S1: reacting phenol with liquid alkali to obtain sodium phenolate; S2: introducing carbon dioxide into the sodium phenolate to carry out a carboxylation reaction, and then carrying out rearrangement isomerization to obtain sodium salicylate; and then carrying out acid precipitation to obtain a crude salicylic acid product; S3: washing and centrifuging the crude salicylic acid product to obtain a salicylic acid product and salicylic acid production wastewater; S4: subjecting the wastewater to adsorption by a resin column, wherein the adsorption effluent comprises front-end effluent and back-end effluent, and the front-end effluent is used for the carboxylation reaction and acid precipitation operation in step S2; S5: inputting the back-end effluent into an evaporation crystallization device to obtain a crude sodium sulfate product and a kettle residue, and the kettle residue is used for the carboxylation reaction and acid precipitation operation in step S2; and S6: after the resin column is saturated with adsorption, eluting and regenerating with alkali solution, and obtaining an eluent comprising a front-end eluent and a back-end eluent, wherein the front-end eluent is used for step S1, and the back-end eluent is used for preparing the alkali solution.

A nonaqueous electrolytic solution and a sodium ion battery comprising same. The nonaqueous electrolytic solution comprises a sodium salt, a nonaqueous organic solvent, an additive, and a surfactant, wherein the nonaqueous organic solvent comprises a phosphate ester solvent and a cyclic carbonate ester solvent, and the additive comprises a sodium phenoxide compound. According to the nonaqueous electrolytic solution, by means of the synergistic effect of components such as the phosphate ester solvent, the cyclic carbonate ester solvent, the sodium phenoxide compound, and the surfactant, the nonaqueous electrolytic solution can effectively improve the initial coulombic efficiency, cycle performance, high-temperature storage performance, and safety performance of the sodium ion battery.

The utility model belongs to the technical field of production of chemical intermediates, and particularly discloses a crystallization kettle for producing sodium paranitrophenolate, which comprises a crystallization kettle body and a jacket, a heat exchange layer is reserved between the jacket and the kettle body, a stirring mechanism is mounted in the kettle body, a scraper is fixedly connected onto the stirring mechanism through a connecting rod, a water inlet and a water outlet are formed in the heat exchange layer, and the water inlet and the water outlet are communicated with the jacket. The stirring mechanisms are communicated through a circulating pipeline, a stop valve, a water pump and a heat exchanger are mounted on the circulating pipeline, the heat exchanger is communicated with a steam supply source through a first electromagnetic valve and is communicated with a cold water supply source through a second electromagnetic valve, and a temperature sensor is fixedly connected to the lower end of each stirring mechanism. According to the utility model, the heat exchanger is arranged on the circulating pipeline, the temperature of circulating water in the circulating pipeline is controlled by the heat exchanger to carry out heat exchange and cooling on the kettle body of the crystallization kettle, and the temperature sensor is arranged in the kettle body to monitor the change of the temperature in the kettle body in real time, so that the condition that the temperature of the crystallization kettle is rapidly reduced is prevented, and the wall hanging phenomenon is avoided.

The invention discloses a method for solvent-free synthesis of 4, 4 '-dinitrodiphenyl ether, and belongs to the field of organic synthesis. The synthesis method comprises the working procedures of feeding dehydration, condensation reaction, reduced pressure distillation, steam distillation, water washing, reduced pressure suction filtration and drying, and the 4, 4 '-dinitrodiphenyl ether is synthesized by taking sodium p-nitrophenolate and p-nitrochlorobenzene as raw materials through solvent-free condensation reaction under the catalysis of potassium chloride. The method provided by the invention has the advantages of direct contact of reactants, short reaction time, high efficiency, energy saving, environmental protection, low production cost, high product yield and good product quality, also avoids the use of organic solvent nitrobenzene, reduces the environmental pollution problem, and realizes green production.

The invention relates to the field of sodium sulfite production, in particular to sodium sulfite and a refining method thereof.The method comprises the steps that S1, a sodium sulfite crude product is dissolved, solid impurities are removed, filtrate is obtained, and the sodium sulfite crude product comprises one or more of impurity sodium sulfate, sodium phenolate organic matter and solid impurities; s2, adjusting the pH value of the filtrate to be less than or equal to 9, then contacting with an extraction agent for extraction, and separating to obtain a water phase and an oil phase; s3, carrying out first concentration crystallization on the water phase, and carrying out solid-liquid separation to obtain a first crystal solid and a first crystal filtrate; s4, dissolving the first crystal solid, carrying out second cooling crystallization, and carrying out solid-liquid separation to obtain a second crystal solid and a second crystal filtrate; and S5, carrying out third crystallization water removal crystallization on the second crystallization solid, carrying out solid-liquid separation, washing to obtain a sodium sulfite wet finished product and a third crystallization filtrate, and drying the sodium sulfite wet finished product. The color and the purity of the sodium sulfite product can be improved, and the obtained product meets the industrial standard.

This invention discloses a method for preparing quinone compounds. The method comprises the following steps: in the presence of a base, a compound as shown in Formula II and a compound as shown in Formula III undergo a condensation reaction to obtain a quinone compound as shown in Formula I; wherein the base is more basic than sodium phenolate. This method is simple to operate and suitable for industrial production.

A preparation method of 4, 4 '-dinitrodiphenyl ether belongs to the field of organic synthesis, and comprises the following steps: step 1, weighing p-nitrochlorobenzene, sodium carbonate, a phase transfer catalyst and DMF according to a ratio; 2, mixing p-nitrochlorobenzene, sodium carbonate, a phase transfer catalyst and DMF, and carrying out a reaction; 3, filtering after the reaction is completed, and cooling filtrate to crystallize; 4, after cooling crystallization of the filtrate is completed, filtering and washing; and 5, drying to obtain the product 4, 4 '-dinitrodiphenyl ether. The synthesis method is simple to operate, p-nitrochlorobenzene is converted into 4, 4 '-dinitrodiphenyl ether by adding a proper phase transfer catalyst, sodium p-nitrophenolate is not used any more, the reaction risk is reduced, the reaction steps are shortened, impurities are few, the conversion rate is high, the purity is high, the production efficiency is improved, and the solvent DMF can be recycled and reused.

The invention relates to the technical field of seed breeding, and particularly discloses a wheat seed rapid germination method. The wheat seed rapid germination method mainly comprises the following steps: soaking wheat seeds in a potassium permanganate solution, taking out, washing with water, soaking in water, taking out, soaking in a germination accelerating liquid medicine, and taking out to obtain medicine soaked seeds; culturing and accelerating germination of the medicine soaked seeds; the pH value of the germination accelerating liquid medicine is 3-4, and the germination accelerating liquid medicine is mainly prepared from the following raw materials: water, ethanol, sodium dodecyl benzene sulfonate, dodecyl hydroxypropyl sulphobetaine, gibberellin, sodium 4-nitrophenolate, brassinolide and zinc 2-ethylhexanoate. According to the wheat seed rapid germination method, through mutual cooperation of the steps, the wheat seed rapid germination method has the advantages of promoting rapid germination of wheat seeds, improving germination efficiency, shortening germination period, being low in viability damage degree and high in survival rate, and market requirements are met.

The invention discloses an application of sodium phenate in preparation of a termite attractant. The termite attractant comprises sodium phenate and imidacloprid. The trapping effect of sodium phenate can attract termites, so that the termites actively contact with imidacloprid, imidacloprid plays an insecticidal role, the combination of sodium phenate and imidacloprid improves the termite trapping and killing efficiency, and compared with a single attractant or insecticide, the termite trapping and killing agent can more effectively control termite harm.

The invention relates to the technical field of industrial naphthalene, in particular to a production method of industrial naphthalene, which comprises the following steps: S1, raw material pretreatment: selecting coal tar as a raw material, and pretreating the coal tar to obtain a coarse material; s2, distillation treatment: carrying out distillation treatment on the coarse material to obtain a base material; s3, purification treatment: carrying out dephenolization and pyridine removal treatment on the base material to obtain naphthalene oil; s4, crystal separation treatment: carrying out crystal separation treatment on the naphthalene oil to obtain crude naphthalene; and S5, refining treatment: carrying out refining treatment on the crude naphthalene to obtain the industrial naphthalene. According to the method, in the first treatment liquid, isopropanol serves as a solubilizing phenol and can play a role in promoting dissolution of sodium phenolate, precipitation and blockage are prevented in the treatment process, the extraction efficiency is improved, polysorbate 80 serves as a surface active agent, diffusion of phenols from an oil phase to alkali liquor can be enhanced, and the extraction efficiency is further improved.

The invention relates to a phenol sodium salt phenol extraction sewage treatment process. The process comprises the following steps: removing oil stains and solid impurities in sewage; extracting and separating by using an extracting agent, and cooling a water phase at the temperature of-5 DEG C to 5 DEG C to separate out Na2SO4 crystals in the water phase, so as to obtain a suspension; centrifugally separating the obtained suspension, heating and dissolving the obtained solid-phase crude salt, evaporating and crystallizing, centrifugally dewatering, and drying to obtain a Na2SO4 salt product; and mixing salt wastewater obtained by centrifugal separation and evaporation, and carrying out biochemical treatment. According to the treatment process provided by the invention, the salt with economic value in the phenol extraction sewage is recovered, the obtained Na2SO4 salt can reach the commercial standard of third level or above, meanwhile, harmful substances such as phenol and heavy metals in the wastewater are separated, and the phenol content in the finally discharged sewage can be as low as 0.05 mg / L.

The invention relates to the technical field of solar cells, and particularly discloses a polishing additive for solving the problem of white spots in the pre-rough polishing process of a BC battery and a using method.The polishing additive is prepared from, by weight, 1.0%-10.0% of accelerant, 0.1%-5% of defoaming agent, 0.1%-0.5% of pH regulator, 0.01%-0.1% of surfactant and the balance deionized water; the accelerant is selected from one or a combination of more than two of sodium p-toluenesulfonate, perbenzoic acid, 2-nitroaniline, parachloronitrobenzene and sodium 2-methoxy-5-nitrophenolate; the accelerant is one or a combination of more than two of sodium p-toluenesulfonate, perbenzoic acid, 2-nitroaniline, parachloronitrobenzene and sodium 2-methoxy-5-nitrophenolate; by adopting an alcohol-free and phosphorus-free environment-friendly component design, the polishing additive obviously reduces the difficulty of subsequent sewage treatment while ensuring the efficient polishing performance, avoids the pollution of a traditional alcohol-containing and phosphorus-containing additive to the environment, effectively solves the problem that a silicon wafer is easy to generate white spots after a previous rough polishing process, and also has the advantages of simple process and low cost. And through an optimized surfactant and defoaming agent compounding technology, the surface flatness of the silicon wafer is further improved, and double breakthrough of environmental protection and performance is realized.

The utility model belongs to the technical field of fraction washing, and particularly relates to a mixed fraction washing system for tar distillation, which comprises an unwashed naphthalene oil tank, an alkaline sodium phenolate elevated tank, a primary continuous washing separation tower and a washed naphthalene oil tank, and is characterized by also comprising a secondary continuous washing separation tower and a dilute alkali elevated tank, the output end of the unwashed naphthalene oil tank and the output end of the alkaline sodium phenolate head tank are respectively connected with the input end of the primary continuous washing separation tower, and the upper oil phase output end of the primary continuous washing separation tower is connected with the input end of the primary dephenolization buffer tank; the output end of the dilute alkali overhead tank and the output end of the primary dephenolization buffer tank are respectively connected with the input end of the secondary continuous washing separation tower, and the oil phase output end of the secondary continuous washing separation tower is connected with the input end of the washed naphthalene oil tank. According to the utility model, a secondary dephenolization process is adopted, and the secondary continuous washing separation tower is additionally arranged to carry out secondary dephenolization on the naphthalene oil, so that the purity of the finished product naphthalene oil is greatly improved.

The invention discloses a hydroxyl-terminated polybutadiene-based polyurethane material with hot air aging resistance and excellent mechanical properties and a preparation method of the hydroxyl-terminated polybutadiene-based polyurethane material. According to the method, hexachlorocyclotriphosphazene is taken as a raw material, sodium phenolate or a mixture of sodium phenolate and p-aldehyde sodium phenolate is taken as a nucleophilic substitution reagent, sodium borohydride is taken as a reducing agent, and the hydroxymethylphenoxy cyclotriphosphazene compound is obtained through nucleophilic substitution reaction and reduction reaction. And introducing the hydroxymethylphenoxy-containing cyclotriphosphazene compound serving as a chain extender or a cross-linking agent into synthesis of hydroxyl-terminated polybutadiene polyurethane to obtain the polyurethane material. The tensile strength of the polyurethane material can be improved by 437%, the elongation at break can be improved by 39%, the glass transition temperature of the polyurethane material is maintained at about-70 DEG C, in addition, the tensile strength retention rate of the polyurethane material is maintained at 56% or above, and the elongation at break retention rate of the polyurethane material is maintained at 53% or above after the polyurethane material is aged in hot air at 100 DEG C for 24 h.

The invention relates to a waste liquid recycling method and application, and discloses a preparation method for producing sodium salicylate by using waste liquid, and the preparation method specifically comprises the following steps: introducing carbon dioxide into the waste liquid containing sodium phenate and sodium hydroxide for the first time for reaction and layering to respectively obtain an oil phase and a water phase, the method comprises the following steps: reacting phenol with an alkaline reagent under normal pressure to obtain a reaction solution, then carrying out reduced pressure reaction on the reaction solution to obtain sodium phenate, and then introducing carbon dioxide for the second time to react to obtain sodium salicylate. According to the invention, the waste liquid containing sodium phenate and sodium hydroxide is subjected to chemical treatment, and sodium phenate in the waste liquid is used for producing high-purity sodium salicylate, so that an efficient reaction method for producing sodium salicylate under mild conditions is obtained, high-conversion-rate recovery and high-value utilization of the waste liquid are realized, no secondary pollution is caused during the process, and the method is suitable for industrial production. And the environment burden is reduced.

The invention belongs to the field of coal coking and production and separation of organic chemical products, and particularly relates to a method for producing alkyl etherates from o-cresol post-fraction carbolic oil fraction. The invention provides a method for producing alkyl etherate from o-cresol post-fraction phenol oil fraction, which comprises the following steps: rectifying phenol-containing coal tar to obtain the o-cresol post-fraction phenol oil fraction at 192-195 DEG C, extracting the o-cresol post-fraction phenol oil fraction by using aqueous alkali to obtain upper-layer dephenolized phenol oil and aqueous-layer phenol sodium salt solution, and separating the upper-layer dephenolized phenol oil from the aqueous-layer phenol sodium salt solution to obtain the alkyl etherate. The method comprises the following steps of: heating to remove impurities such as neutral oil in a sodium phenolate aqueous solution, performing etherification reaction with an alkylating agent to obtain water-insoluble o-methyl benzene alkyl ether and 2, 6-dimethyl benzene alkyl ether, and rectifying to obtain high-purity o-methyl benzene alkyl ether and 2, 6-dimethyl benzene alkyl ether. According to the method, the reaction conditions are mild, only etherates are generated in the reaction process, side reactions of alkylation and dealkylation on benzene rings are basically avoided, and the etherification selectivity is good.

The present invention belongs to the technical field of chemical engineering, and specifically relates to a method for separating mixed cresols. The method for separating mixed cresols comprises the successive steps of selective oxidation, filtration, neutralization, secondary filtration and rectification, wherein the selective oxidation comprises: adding mixed cresols, sodium hydroxide, sodium methoxide, a solvent and a catalyst to an oxidizing kettle, heating same, and introducing oxygen into the oxidizing kettle to perform selective oxidation. In the present invention, sodium methoxide is added in the step of selective oxidation; and sodium methoxide can react with water obtained in the step of a salt forming reaction (i.e., the reaction step of reacting sodium hydroxide with mixed cresols to generate sodium phenolate and water) to generate methanol and sodium hydroxide, thereby promoting the progression of a selective oxidation reaction and increasing the yield.