239 results about "Benzyl alcohol" patented technology

The invention discloses a method for catalytically oxidizing lignin to depolymerize into an aviation oil intermediate by using a cellulose carbon aerogel supported copper nano-catalyst. Comprising the following steps: (1) dissolving cellulose powder into a mixed alkali solution of NaOH and urea, and stirring at low temperature to obtain a clear and transparent cellulose solution; and washing to be neutral to obtain well dispersed cellulose suspension. And (2) carrying out suction filtration molding, and freeze-drying for a period of time to obtain the cellulose aerogel. And (3) immersing in an ethanol solution of copper nitrate for ultrasonic treatment, and drying in a vacuum drying oven. And (4) carrying out high-temperature calcination in an N2 atmosphere to obtain a catalyst which is marked as Cu / CA. And (5) the catalyst can efficiently catalyze a Fenton-like reaction to oxidize a dimer model compound of lignin in acidic, neutral and alkaline environments to obtain products including benzoic acid, acetophenone, benzyl alcohol, phenol and the like, the required hydrogen peroxide concentration is low, and the catalyst has the advantages of simple process, high catalytic activity, low cost and the like, can be used for effectively degrading lignin to prepare aviation oil intermediates, and has wide application prospects. And repeated cyclic utilization is realized.

The invention provides a hydrogel composition. The hydrogel composition is prepared from the following components in percentage by weight: 0.5 to 15 percent of an adhesion component, 0.5 to 10 percent of a moisturizing component, 0.01 to 5 percent of a bioactive component, 0.01 to 5 percent of a physical crosslinking agent, 0.01 to 2 percent of a flavoring component, 0.01 to 2 percent of an antimicrobial component and the balance of medical purified water, wherein the bioactive component comprises at least one of lipoic acid, tea polyphenol, lactic acid bacteria extract and metabiotics; the antimicrobial component comprises at least one of copper ions, benzyl alcohol, p-hydroxyacetophenone, sodium methyl hydroxybenzoate and sodium ethyl hydroxybenzoate. According to the hydrogel composition disclosed by the invention, the low-concentration antimicrobial component is introduced, so that the antimicrobial component has more stable and effective bactericidal activity and can be more stably adhered to a wound, and the hydrogel composition can have better antibacterial performance and a function of promoting wound healing without additionally adding antibiotics.

The invention provides a preparation method of a triazine / heptazine homojunction structure carbon-doped carbon nitride photocatalyst, which comprises the following specific steps: (1) placing mixed powder of melamine and 2, 4, 6-triaminopyrimidine in air, heating to 300-500 DEG C, and calcining for 2-6 hours to form a mixture of carbon-doped melamine and oligomer thereof; (2) placing the mixture obtained in the step (1) in water at 60-70 DEG C, performing ultrasonic dispersion, then slowly cooling to room temperature, oscillating for 12-36 hours, removing moisture through rotary evaporation, and further drying to obtain a solid supramolecular precursor; and (3) fully mixing the solid supramolecular precursor obtained in the step (2) with molten salt, calcining at 500-600 DEG C for 2-6 hours, cooling, fully washing with deionized water, removing mixed salt, separating solid residues, and drying to obtain the triazine / heptazine homojunction structure carbon-doped carbon nitride photocatalyst THCNx-t. The prepared carbon-doped carbon nitride photocatalyst is uniform in homojunction distribution, and has the characteristics of excellent photochemical properties, high photon-generated carrier separation efficiency and excellent photocatalytic benzyl alcohol selective oxidation performance.

The invention relates to the field of catalysts, and discloses a hydrogenation catalyst, a preparation method and application thereof, and a method for preparing alpha-methylbenzyl alcohol, the hydrogenation catalyst comprises a hydrogenation active component and a SiO2 carrier; the surface of the catalyst is modified by siloxane groups. The hydrogenation catalyst has the characteristics of high low-temperature hydrogenation activity and long service life. The hydrogenation catalyst is used in a liquid phase hydrogenation reaction and has high catalytic activity, so that a low-temperature liquid phase reaction can be better carried out, for example, the hydrogenation catalyst is used in preparation of alpha-methylbenzyl alcohol, the raw material acetophenone can obtain a high conversion rate, the alpha-methylbenzyl alcohol has high selectivity, and meanwhile, the hydrogenation catalyst is long in service life.

The invention discloses preparation of a phenanthroline-based covalent organic framework photocatalyst and application of the phenanthroline-based covalent organic framework photocatalyst in photocatalytic production of hydrogen peroxide. According to the method, a hydrogen peroxide production experiment is carried out in a water-oxygen system or a benzyl alcohol-water-oxygen system by taking phenanthroline-based COF as a photocatalyst. According to the invention, through regulation and control of molecular flatness engineering, an electron-rich phenanthroline unit (Phen) anchored by a pyridine expansion plane and electron-deficient triazine (TTA) are integrated into a COF skeleton, and a novel electron donor-acceptor (D-A) type COF is synthesized. The COF has the advantages of proper energy band structure, excellent photo-induced electron and hole separation efficiency, strong D-A interaction, good hydrophilicity and the like, and the efficiency of photocatalytic hydrogen peroxide production reaction within a short time is greatly improved. The invention provides a use method of the COF photocatalyst which is cheap, convenient, rapid, efficient and environment-friendly, and has a potential application prospect.

The invention provides a carbon fiber reinforced acid and alkali resistant PPS material. The carbon fiber reinforced acid and alkali resistant PPS material comprises the following components in parts by mass: 40-80 parts of PPS, 5-10 parts of modified carbon fiber, 1-5 parts of modified glass fiber, 1-5 parts of a coupling agent, 1-5 parts of an antioxidant and 1-10 parts of a lubricant. The modified carbon fiber provided by the invention has a polyphenylene sulfide structure and a star-shaped structure, has good compatibility with other components, and can form a more regular and compact three-dimensional net structure with other components, so that the stability of a product is enhanced, and a plurality of properties such as mechanical properties, acid and alkali resistance and the like are improved. Meanwhile, by introducing a polyphenylene sulfide structure and a benzyl alcohol structure into the modified glass fiber, the interfacial compatibility and bonding strength are effectively improved, the compatibility with other components is enhanced, and the components are combined more tightly, so that the dispersity and stability of the system are further enhanced, and the performance of the PPS material is improved.

The invention discloses a preparation method of a triazinyl covalent organic framework (COF) material and application of the triazinyl covalent organic framework material in photocatalytic production of hydrogen peroxide. The amino starting monomer is regulated and controlled through a side chain regulation and control strategy to obtain the COF with a functional group, and the COF can be connected into a ring by thienopyridine through post-modification to replace an original imine bond, so that the planarity and the conjugation degree of the COF are obviously improved, and the COF has good light absorption capacity and a proper band gap; therefore, the COFs photocatalyst has excellent photocatalytic hydrogen peroxide production capacity in a water-benzyl alcohol system under a light source, and a beneficial thought can be provided for designing a high-performance COFs photocatalyst.

The invention discloses a washable anti-wrinkle fabric and a preparation method thereof, and relates to the technical field of fabrics. When the washable anti-wrinkle fabric is prepared, a pretreated cotton fabric, triethyl phosphite and 4-amino-3-nitrobenzyl alcohol react to prepare a modified cotton fabric; enabling the nano titanium dioxide wrapped by the chitosan to react with p-hydroxybenzaldehyde to prepare modified nano titanium dioxide; reacting the modified cotton fabric with the modified nano titanium dioxide to obtain a modified cotton gray fabric; and finally, carrying out after-finishing by using 1-chloromethyl-3-trifluoromethyl benzene to obtain the washable anti-wrinkle fabric. The washing-resistant and crease-resistant fabric prepared by the invention has excellent washing resistance, crease resistance, flame retardance and ultraviolet resistance.

The invention relates to a molecular tag DMDPM compound, a preparation method thereof and application of the molecular tag DMDPM compound in assisting homogeneous synthesis of heptapeptide H6K, and belongs to the technical field of organic synthesis. The molecular tag DMDPM compound is 2, 4-dimethoxy-4 '-diphenylphosphinyl oxydiphenyl alcohol, and the molecular tag DMDPM compound is 2, 4-dimethoxy-4'-diphenylphosphinyl The method has the advantages of a liquid-phase synthesis method and a solid-phase synthesis method, H6K can be simply, quickly, economically and efficiently synthesized and prepared, and a 2, 4-dimethoxy-4 '-diphenylphosphinyloxy diphenyl alcohol small-molecule auxiliary group (also called as a carrier) can be recycled and directly reused, so that raw material waste is reduced, waste pollution is reduced, the cost is saved, and environmental protection is facilitated.

The invention relates to the technical field of toothpaste, and discloses toothpaste with biological activity and deodorization and a preparation method thereof, the toothpaste comprises the following raw materials: sucralose, glycerin, sorbitol, benzyl alcohol, sodium dihydrogen phosphate, water, hydrated silica, sodium carboxymethyl cellulose, xanthan gum, a deodorization modification material, a vitamin E inclusion compound, a foaming agent and essence; wherein the deodorizing modified material is obtained by modifying an antibacterial agent triclosan on the surface of tourmaline powder, so that the toothpaste is endowed with excellent antibacterial and deodorizing performance; the vitamin E clathrate compound is a protamine derivative coating vitamin E. In the use process, positive charges carried by protamine and mucous membranes with negative charges are utilized to generate an electrostatic adsorption effect, and the vitamin E clathrate compound is adhered to ulcers, so that the effects of positioning, slow-release and targeting are achieved, ulcer healing is promoted, and the healthy environment in the oral cavity is protected.

The invention belongs to the technical field of nano composite materials, and relates to a preparation method of an iron diselenide / nitrogen-sulfur co-doped carbon nanosheet composite material, which comprises the following steps: putting cellulose, sodium bicarbonate and thiourea into a mortar, uniformly grinding, putting into a tubular furnace, calcining at high temperature under the protection of inert gas, naturally cooling, centrifugally separating and collecting the calcined powder, thereby obtaining the iron diselenide / nitrogen-sulfur co-doped carbon nanosheet composite material. The nitrogen and sulfur co-doped carbon nanosheets are obtained; ultrasonically dispersing iron nitrate nonahydrate in ethanol, heating in an oil bath until the ethanol is evaporated to dryness, and carrying out heat treatment to obtain an iron-based precursor; the obtained iron-based precursor, selenium dioxide and nitrogen and sulfur co-doped carbon nanosheets are ultrasonically dispersed in benzyl alcohol, the mixture is transferred into a reaction kettle with a polytetrafluoroethylene lining, the composite material is obtained after solvothermal reaction, and the morphology of the composite material is that iron diselenide nanoparticles are evenly and densely attached to the surfaces of the nitrogen and sulfur co-doped carbon nanosheets. The method is simple and easy to implement, suitable for large-scale production, easy to implement industrially and expected to be applied to the negative electrode of the hybrid supercapacitor.

The invention relates to the technical field of paint removers, and particularly discloses an environment-friendly water-based paint remover for tools as well as a preparation method and application of the environment-friendly water-based paint remover. The invention provides an environment-friendly water-based paint remover for tools. The environment-friendly water-based paint remover is specifically prepared from 280-320 parts of a main solvent, 40-54 parts of a solubilizer, 30-40 parts of a surfactant, 7-13 parts of a penetrating agent, 130-150 parts of monoethanolamine, 8-12 parts of sulfonic acid, 40-58 parts of caustic soda flakes, 1-5 parts of a thickening agent and 280-320 parts of water. The main solvent is formed by mixing benzyl alcohol and dipropylene glycol monomethyl ether according to the weight ratio of (0.1-1): (1-10); the preparation method of the penetrant comprises the following steps: reacting phthalic anhydride, ethylene glycol and hydroquinone to obtain modified polyester; and then mixing the modified polyester with isooctanol polyoxyethylene ether JFC-3 to obtain the modified polyester. The paint remover prepared by the invention has good paint removal efficiency, and can effectively improve the production efficiency of an automobile coating factory and reduce the comprehensive cost.

The invention relates to the technical field of energy environment science and engineering, in particular to a plasma-ferroelectric WO3-x / K4Nb6O17 heterojunction and a preparation method and application thereof. According to the plasma-ferroelectric WO3-x / K4Nb6O17 heterojunction, a ferroelectric K4Nb6O17 nanosheet serves as a substrate, oxalic acid dihydrate and sodium borohydride serve as composite reducing agents, in-situ synthesis of WO3-x nanoparticles with oxygen vacancies and in-situ loading and growth of the WO3-x nanoparticles on the surface of the K4Nb6O17 nanosheet are achieved in the solvent heat treatment process, and the plasma-ferroelectric WO3-x / K4Nb6O17 heterojunction is obtained. Therefore, the plasma-ferroelectric WO3-x / K4Nb6O17 heterojunction is obtained. The WO3-x / K4Nb6O17 heterojunction can be used as a photocatalyst, and the coupling reaction efficiency of preparing CO through photocatalytic CO2 reduction and preparing hydrogenated benzoin through benzyl alcohol oxidation is improved.

The invention discloses a terbinafine hydrochloride needleless injection, a transdermal injection for treating superficial fungal infection and an administration device of the transdermal injection, belongs to the technical field of pharmaceutical preparations, and successfully develops the terbinafine hydrochloride needleless injection which takes benzyl alcohol and ethanol as auxiliary materials, the invention provides a terbinafine hydrochloride needleless injection or an injection administration device thereof, which is used for preparing the terbinafine hydrochloride needleless injection, and proves that a prescription containing low-concentration ethanol can have good safety and excellent infiltration and absorption promoting capability, and the medicine can quickly reach a focus part and has long effective action time. The invention also provides the administration device of the terbinafine hydrochloride needleless injection or the injection thereof. According to the dosing device, the replaceable injection head and the injection assembly are used, cross infection can be reduced, and the purity of liquid medicine is kept.

The invention belongs to the technical field of catalyst synthesis, and particularly relates to an indium-based-carbon gap composition catalyst as well as a preparation method and application thereof. The indium-based-carbon gap composition catalyst comprises a carrier and an indium-based-carbon gap composition loaded on the carrier, the chemical structural formula of the indium-based-carbon gap composition is M3InCx, M is selected from one of Pt, Pd and Ni, and x is more than or equal to 0.5 and less than or equal to 1. According to the invention, acetylacetone metal salt and InCl are used as raw materials, and are subjected to hydrothermal reaction, washing, drying and other steps in an N, N-dimethylformamide or benzyl alcohol solvent according to a mass ratio of 3: 1 to prepare the InCl-metal complex. By changing the solvent, the product structure can be regulated and controlled, the obtained compound shows high activity and stability in catalytic reactions such as methanol water phase reforming hydrogen production, the preparation process is simple and convenient, high-temperature annealing is not needed, particle aggregation is effectively prevented, and a new way is provided for development of high-performance catalysts.

The invention provides a trapping agent for C4 mixed hydrocarbon gas separation, a preparation method of the trapping agent and a C4 mixed hydrocarbon gas separation method. The trapping agent comprises a solid adsorbent and an organic solvent, the solid adsorbent is CALF-20 (Callidol Alkaline The total mass of the trapping agent is 100%, the content of the solid adsorbent is 15wt%-50wt%, and the content of the organic solvent is 50wt%-85wt%; the organic solvent is prepared from one or a combination of more than two of 1, 3-dimethyl-2-imidazolinone, benzyl alcohol and dimethyl phthalate. The trapping agent is excellent in effect, has the advantages of being large in n-butene adsorption capacity, high in n-isobutene / isobutene selectivity, high in adsorption speed, good in regeneration performance and the like, and provides diversified choices for separating C4 mixed hydrocarbon gas through a slurry method in industrial practical application.

A preservative-containing composition of tilpotide comprising less than or equal to about 3 mg / mL NaCl; a phosphate buffer solution, phenol, benzyl alcohol and glycerol.

The invention discloses a RuNi alloy electrocatalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. Ruthenium acetylacetonate and nickel acetylacetonate are used as precursors, a dispersing agent of polyvinylpyrrolidone is added, the mixture is dissolved in a mixed solvent of benzyl alcohol and aniline, and a mixed solution is obtained; the preparation method comprises the following steps: uniformly stirring, sealing in a reaction kettle, continuously preserving heat at a certain reaction temperature, continuously stirring in the reaction process, and centrifugally drying after the reaction is finished to obtain the RuNi alloy catalyst. The agglomeration of the RuNi alloy nano-particles is effectively prevented, and the nano-particles are ensured to be uniformly dispersed in the synthesis process, so that the catalyst with uniform size and good dispersity is obtained. Through in-situ growth of the Ru element on the surface of the Ni nanostructure, catalytic sites of noble metal are utilized to the maximum extent, excellent conductivity and structural stability of Ni are exerted, the hydrogen evolution effect of the catalyst under the alkaline condition is remarkably improved, and the catalytic activity is improved.

The invention relates to the technical field of comprehensive treatment of agricultural pests, and particularly provides a bactrocera cucurbitae double-trapping type attractant based on optimal matching of host and intestinal bacteria volatile matters and application of the bactrocera cucurbitae double-trapping type attractant. The attractant comprises an active component and a synergistic component, the active component is derived from balsam pear and towel gourd volatile matters and bactrocera cucurbitae intestinal bacterial metabolites, and comprises 2-methyl ethyl valerate, propyl hexanoate, ethyl hexadienoate, heptanal, benzyl alcohol, 3-methyl acetic acid-1-butanol, indole and 1-undecanol; and the synergistic component is myzobenzoic ketone. Active components are quickly released in the early stage of application, so that the attraction efficiency is remarkably improved; the synergistic component prolongs the trapping lasting period through the slow release effect, and the long-term trapping effect is ensured. All the components of the attractant provided by the invention are biological sources or environment-friendly chemical substances, the attractant meets the requirement of green prevention and control, can efficiently attract male and female adults at the same time, makes up the limitation that a traditional sex attractant only induces male adults or a food attractant only induces female adults, and is beneficial to more comprehensive control of population quantity.

The invention discloses a broad-spectrum preservative for cosmetics and a preparation method thereof, wherein the broad-spectrum preservative comprises the following raw materials in parts by mass: 30-50 parts of water, 10-15 parts of lactic acid and lactate, 10-15 parts of benzyl alcohol, 10-15 parts of costus root extract, 10-15 parts of forsythia extract, 10-15 parts of bamboo leaf prickly ash fruit extract, and 5-8 parts of natural antioxidants. The present invention adds antioxidants to the raw materials on the basis of adding a variety of natural antibacterial compositions to achieve a broad-spectrum antibacterial effect, and cooperates with the non-volatile property of lactic acid to help improve the thermal stability of the preservative, improves the problem of poor sterilization effect of natural preservatives on the market under high temperature environments, and the raw materials of the present invention are 100% extracted from pure natural animals and plants, do not contain toxic or irritating substances, are particularly suitable for skin cosmetics, and users have a better experience.

The application discloses an oxide-sulfide S-type heterojunction composite photocatalyst as well as a preparation method and application thereof. x The oxide-sulfide S-type heterojunction composite photocatalyst is prepared by adding WO x into ethanol, uniformly ultrasonic dispersing, and then performing heating and dry distillation. The application successfully constructs a tungsten oxide and cadmium sulfide heterojunction, has good light response, utilizes a heterojunction interface formed by the two catalysts and having a synergistic effect, improves the photocatalytic hydrogen production capacity, and promotes selective oxidation of benzyl alcohol. The application has simple operation and good repeatability.

The present invention relates to body adhesive formulations. In particular, body adhesives that are water resistant yet are washable and removeable by way of washing in water in accordance with the ga

The present application relates to the technical field of non-noble metal catalysts, and provides a sulfur-doped cobalt-based material with a core-shell porous structure, which has Co nanoparticles as an inner core, and a porous carbon layer containing Co9S8 coated on the surface of the Co nanoparticles. The present application significantly enhances the catalytic capacity of the material by regulating the micro-morphology and surface active site composition and structure of the material through sulfur doping. On the one hand, the metal sulfide obtained by S doping improves the electrical conductivity of the catalyst, and on the other hand, the S element can regulate the microstructure and morphology of the material due to its strong reducing effect, so that S doping is beneficial to promoting the exposure of active sites and the diffusion of target molecule, thereby significantly enhancing the oxygen molecule activation efficiency and improving the benzyl alcohol oxidation activity and selectivity.

The present invention refers to a liquid pharmaceutical Cetrorelix composition comprising a stabilizing agent selected from poloxamer having an t average molecular weight of 7,000-12,000 g / mol and / or benzyl alcohol, a pharmaceutical dosage form comprising said liquid pharmaceutical composition, and their use in inhibiting premature luteinizing hormone surges in woman undergoing controlled ovarian stimulation. Further, a method for preparing the liquid pharmaceutical Cetrorelix composition and pharmaceutical dosage form is disclosed.

This disclosure generally relates to catheters, methods of enhancing the patency of an intravascular catheter and compositions, methods, devices and kits relating to the infusion of a catheter lock solution into an indwelling catheter. Disclosed compositions, methods, devices and kits aid in diminishing the effects of microbial infection in catheters and occlusion of the catheters. A representative lock solution includes about 10% sodium citrate and about 1.5% benzyl alcohol. The solution has a density approximating the density of blood for retention of the solution in a catheter during the lock period.

The invention discloses a vitamin B12 injection and a preparation method thereof, and relates to the technical field of pharmaceutical preparations. The preparation method of the injection comprises the following steps: (1) dissolving the raw material medicines: dissolving the vitamin B12 and the benzyl alcohol in the water for injection to obtain an injection A; (2) dissolving a stabilizer-synergist: firstly adding L-cysteine into the injection A, then adding liraglutide, and uniformly mixing to obtain an injection B; (3) pH value adjustment: adjusting the pH value of the injection B to 4.0-4.5 to obtain an injection C; (4) dissolution of an impurity reducing agent-osmotic pressure regulator: sequentially adding spleen aminopeptide and glucose into the injection C, and standing to obtain an injection D; (5) fixing the volume, filtering and sterilizing; and (6) filling. According to the vitamin B12 injection prepared by the method, the preparation time can be greatly shortened, and total impurities in a final finished product can be obviously reduced through reasonable dissolution sequence, selection of stirring materials and limitation of temperature and pH value.

The application belongs to the field of photocatalytic water decomposition, and relates to a hollow indium zinc sulfide composite catalyst material loaded with double cocatalysts and a preparation method and application thereof. The material is a composite material of double metal chalcogenide indium zinc sulfide and MnO2 and Ti3C2, the MnO2 has a hollow spherical structure, the indium zinc sulfide has a two-dimensional sheet structure, the indium zinc sulfide is coated on the outer surface of the MnO2 to form a composite spherical structure, and the Ti3C2 is attached to the surface of the composite spherical structure. The catalyst material not only has a higher specific surface area to provide more surface active sites, but also can enhance the refraction and reflection of light, thereby improving the utilization efficiency of light. The MnO2 and the Ti3C2 can be used as hole-type and electron-type cocatalysts respectively, and the unique carrier transport path thereof promotes the separation and transfer of photo-generated carriers, thereby enhancing the photocatalytic hydrogen production and benzyl alcohol oxidation performance of the material.

The application belongs to the technical field of catalyst preparation, and particularly relates to a molecular sieve confined metal catalyst with different axial sizes, a preparation method thereof and application. The preparation method of the molecular sieve confined metal catalyst with different axial sizes comprises the following steps: mixing a water-soluble metal source, an organic amine ligand, an additive, a silicon source, a template agent, an alkali metal compound and water, performing a hydrothermal crystallization reaction, and obtaining a solid-phase product; the additive comprises one or more of urea, ammonium fluoride, lysine, hydrofluoric acid, methanol, ethanol, propanol, butanol, benzyl alcohol, benzaldehyde, P123 and F127; the solid-phase product is calcined to obtain a molecular sieve confined metal precursor; and the molecular sieve confined metal precursor is subjected to a reduction reaction to obtain the molecular sieve confined metal catalyst with different axial sizes. The molecular sieve confined metal catalyst with different axial sizes provided by the application has high catalytic activity and good thermal stability under high-temperature (600-650 DEG C) conditions.

The invention relates to a process for removing COD (Chemical Oxygen Demand) in evaporative condensate of POSM (Polyhedral Oriented Sodium Methyl) waste alkali liquor, belonging to the technical field of wastewater treatment. A first-effect alkali liquor circulating pump, a second-effect alkali liquor circulating pump and a third-effect alkali liquor circulating pump are respectively arranged at first-section filler layers of a first-effect flash separation tower, a second-effect flash separation tower and a third-effect flash separation tower; liquid caustic soda is added into a separation reaction section of a flash separation tower, in the separation reaction section, the liquid caustic soda reacts with phenol in rising steam to generate sodium phenolate, sodium phenolate and salt substances, the boiling point is high, the physical properties are changed, the substances fall back into tower kettle liquid again, benzene series substances such as methyl benzyl alcohol and phenethyl alcohol carried by the phenol can be separated out due to the fact that an azeotropic system is damaged, and the content of the benzene series substances is reduced. The multiple-effect condensate is transferred into the tower kettle liquid, so that the benzene series in the multiple-effect condensate is greatly reduced compared with a system without adding the liquid alkali, the concentration of the material in the feeding of the rectifying tower can be reduced, and the content of the benzene series in the tower kettle liquid is reduced after the multiple-effect condensate is separated by the rectifying tower.

The invention provides a waterproof heat-resistant mold coating which comprises the following components: modified acrylic resin, modified silicon dioxide, epoxy resin, kaolin, talcum powder, hexagonal boron nitride, zinc stearate, graphite, a solvent and an auxiliary agent, wherein the modified acrylic resin is obtained by polymerizing acrylic acid and butyl methacrylate and then grafting 2-fluoro-5-(trifluoromethyl) benzyl alcohol and triisopropyl silanol; the modified silicon dioxide is obtained by grafting perfluorooctyl ethylene, phenyl methacrylate, hydroxyethyl methylacrylate and oleic acid after silicon dioxide and a silane coupling agent react with each other. According to the waterproof heat-resistant mold coating disclosed by the invention, a silicon-oxygen bond, a benzene ring, a long fluorine chain and an organic chain segment are introduced into the modified silicon dioxide, and the silicon-oxygen bond, the benzene ring, the fluorine chain and the organic chain segment are introduced into the modified acrylic resin, so that the heat resistance, hydrophobicity and other properties of the coating are improved, and the waterproof heat-resistant mold coating has a good application prospect.