83 results about "Bisphenol S" patented technology

The invention discloses a medical washable high-temperature-resistant modified polyester fiber fabric and a preparation method thereof, and relates to the technical field of fabrics. The medical washable high-temperature-resistant modified polyester fiber fabric prepared by the invention is obtained by blending, spinning and weaving modified polyester and modified mica and activating with sodium hypochlorite; the modified polyester is obtained by grafting organic silicon modified polyester with n-dodecanethiol and then reacting with bromooctylhydantoin; the modified mica is prepared by polymerizing diethyl phosphite and bisphenol S on the surface of the pretreated mica, grafting a vinyl monomer and then reducing; the vinyl monomer is obtained by carrying out a reaction on 1-allyl-3-cyano-6-hydroxy-4-methyl-2-pyridone and an azo salt, and the vinyl monomer is obtained by carrying out a reaction on 1-allyl-3-cyano-6-hydroxy-4-methyl-2-pyridone and an azo salt; the medical washable high-temperature-resistant modified polyester fiber fabric prepared by the invention has good antibacterial, anti-aging and flame-retardant properties.

The present invention belongs to the technical field of fabric color fixing agents and provides a novel acidic color fixing agent free of bisphenol S and a preparation method thereof; the acidic color fixing agent is composed of the following components in parts by weight: 15-25 parts of water, 10-15 parts of phenol, 15-25 parts of dimethylacetamide, 2-5 parts of sodium sulfite, 10-15 parts of acetic acid, 5-7 parts of concentrated sulfuric acid, 15-20 parts of acrylic acid, 2-5 parts of ethylene glycol dimethyl ether, and 1-3 parts of sorbitol; the preparation method comprises the following steps: mixing a formula amount of phenol, dimethylacetamide, acrylic acid, acetic acid, and sodium sulfite, heating, adding concentrated sulfuric acid to react, cooling, adding a formula amount of water, and adding a formula amount of ethylene glycol dimethyl ether and sorbitol to obtain the product. Compared with the prior art, the present invention does not contain bisphenol S, has a good color fixing effect, can effectively improve various fastnesses such as water fastness, perspiration fastness, and seawater resistance, has little effect on the color change of the fabric after treatment, and has good tolerance to hardness ions.

The utility model relates to the technical field of bisphenol S material conveying, in particular to a bisphenol S flexible conveying auxiliary assembly. According to the technical scheme, the supporting device comprises a main body installation supporting plate, installation fixing connecting holes are formed in the main body installation supporting plate, supporting matching connecting columns which are distributed left and right are arranged at the upper end of the main body installation supporting plate, and main body movable matching supporting seats are arranged at the upper ends of the supporting matching connecting columns. The main body movable fit supporting seats can freely rotate and move relative to the supporting fit connecting column, and the left main body movable fit supporting seat and the right main body movable fit supporting seat are connected with a semi-cylindrical first movable fit frame and a semi-cylindrical second movable fit frame correspondingly. The utility model has the advantages that the pipeline can be flexibly moved as required during use, and the movable matching of the output position can be carried out when bisphenol S materials are conveyed, so that the conveyed materials can be uniformly mixed with different materials.

The invention discloses a method for extracting bisphenol S and / or related compounds thereof from fruit puree and application thereof, and the method comprises the following steps: fully and uniformly mixing the fruit puree, a salting-out reagent and an extraction solvent, carrying out solid-liquid separation, collecting to obtain a solution 1, fully and uniformly mixing the solution 1 and an adsorbent, carrying out solid-liquid separation, and collecting to obtain a solution 2. The invention establishes a method for extracting 14 bisphenol S and novel derivatives thereof in fruit puree, establishes an ultra-high performance liquid chromatography detection method, can realize synchronous extraction and determination of all target compounds, is simple to operate, low in cost, good in detection accuracy, high in sensitivity and strong in specificity, has an adding standard recovery rate of 70-101%, accords with acknowledged standard regulations, and has wide application prospects. Actual detection requirements are met, and higher simplicity and wider detection limit are achieved.

The application discloses an oxygen-vacancy-rich manganese dioxide magnetic carbon-based composite catalyst and a preparation method and application thereof in activating peroxymonosulfate to degrade bisphenol S. Wheat straw is used as a biochar raw material to prepare magnetic biochar, which is dispersed into a MnSO4*H2O solution and stirred, KMnO4 solution is added and stirred, the obtained material is transferred into a hydrothermal high-pressure kettle with a quartz liner, the high-pressure kettle is then transferred to a set temperature, after the reaction is completed, the material in the high-pressure kettle is cooled to room temperature, the reacted material is then filtered, the filtered solid is separated through a magnetic field, the solid with magnetism is washed and dried to obtain a catalyst precursor, and the catalyst precursor is aged through an NH4Cl solution to obtain the composite catalyst MBMN rich in OVs. The MBMN composite catalyst prepared by the application has low raw material cost, simple preparation process and high practicability.

The invention discloses a bisphenol-substance-free phenolic synthetic tanning agent as well as a preparation method and application thereof, and relates to the technical field of tanning. According to the phenolic synthetic tanning agent, at least one of the R group and the X group is selected from an amide structure containing a sulfonic acid group, so that the hydrophilicity and the tanning effect of the synthetic tanning agent are better, substances such as bisphenol S and bisphenol F which have risks to the environment and health are not contained, and the tanning agent is green, environmentally friendly, safe, healthy and suitable for industrial production. And the tanned leather product has better softness, fullness and light resistance, and has better application value.

The invention discloses a polyarylether sulfone composite material which comprises the following components in parts by weight: 50-90 parts of polyarylether sulfone resin; 10 to 50 parts of sulfonated polyarylether sulfone resin; the sulfonated polyarylether sulfone resin is derived from bisphenol S and a dichloro monomer; the bisphenol S is selected from bisphenol S and a dichloro monomer, the dichloro monomer is selected from 4, 4 '-dichlorodiphenyl sulfone and 4, 4'-dichlorodiphenyl sulfone-3, 3 '-disulfonic acid dimetal salt, the 4, 4'-dichlorodiphenyl sulfone-3, 3 '-disulfonic acid dimetal salt accounts for 5-70 mol% of the dichloro monomer, and the range of the molar ratio of the bisphenol S to the dichloro monomer is 1: (0.95-1.05). The sulfonated polyarylether sulfone resin with a specific content is added into the polyarylether sulfone resin, so that the antibacterial performance can be effectively improved, and the thermal deformation temperature and the light transmittance are also improved.

Provided are: a resin dispersion which has excellent stability, and is capable of forming a coating film excellent in terms of processability, retort resistance and openability and suitable as a coating film for a can body, a can lid or the like, wherein a polyester resin which does not have any structural unit derived from bisphenol A, bisphenol F or bisphenol S and has neither a sulfo group nor a salt thereof is used; a coating material; and a can lid and a can body both using the coating material. A resin dispersion according to the present disclosure comprises a polyester resin (A) having an acid value of 16 mg KOH / g or less and a number average molecular weight of 8,000 or more, a phenolic resin (B) having a weight average molecular weight of 500 to 2,700 and having a specific structure, a neutralizing agent, an organic solvent, and water, wherein the organic solvent is contained in an amount of 30 to 130 parts by mass per 100 parts by mass of the total amount of the resin (A) and the resin (B).

The invention belongs to the field of composite glass plates, and discloses a curved-surface composite glass plate and a preparation method thereof. The curved-surface composite glass plate comprises a polycarbonate layer, a glass layer and an elastic bonding layer arranged between the outer side surface of the polycarbonate layer and the glass layer. Wherein the polycarbonate layer is a modified polycarbonate plate of which the inner side surface is provided with a hardened coating; the modified polycarbonate plate is prepared from modified polycarbonate and an ultraviolet light absorber. According to the curved-surface composite glass plate, due to the thickening design of the elastic bonding layer at curved-surface turning and edges and the introduction of modified polycarbonate prepared from bisphenol S and other raw materials and modified silicon dioxide in the hardened coating, the curved-surface composite glass plate has excellent stability, transparency, hardness, wear resistance, flame retardance, antifogging capacity, impact resistance and fragment scattering prevention capacity. Therefore, the method has a wider application prospect in the scenes of vehicle windows / skylights, rail transit, building curtain walls, curved surface electronic cover plates and the like.

This invention belongs to the field of microbial degradation technology. This invention provides a strain of *Phlebiaacerina* S-LWZ20190614-6 (CGMCC No. 40196) and its application in the degradation of lignin and bisphenol S. This strain was deposited on June 6, 2022, at the China General Microbiological Culture Collection Center (CGMCC), with accession number CGMCC No. 40196, located at No. 3, Courtyard 1, Beichen West Road, Chaoyang District, Beijing. Under PDB conditions, the degradation rate of strain S-LWZ20190614-6 reached 99.6% after 7 days; under Kirk conditions, the degradation rate reached 96.2% after 7 days.

The invention belongs to the technical field of composite materials, and discloses a preparation method of a high-temperature-resistant mica battery separator. The preparation method comprises the following steps: adding modified mica aggregate into a composite resin liquid, carrying out ball milling, adding the composite resin liquid and modified long glass fibers, uniformly stirring, adding a curing agent mixture, stirring, carrying out vacuum defoaming, injecting into a mold, carrying out step-by-step hot pressing, demolding, and cooling to obtain the high-temperature-resistant mica battery separator. Wherein the composite resin liquid is prepared from bisphenol S epoxy resin, bisphenol A epoxy resin, bisphenol A cyanate ester resin, 4, 4 '-diaminodiphenylmethane tetraglycidyl amine, modified hyperbranched polysiloxane, modified nano zirconium oxide and the like. According to the high-temperature-resistant mica battery separator, the impact strength, the electric strength and the tensile strength of the high-temperature-resistant mica battery separator are effectively improved by introducing the modified long glass fiber and the modified hyperbranched polysiloxane and the modified nano zirconium oxide in the composite resin liquid. Therefore, the method has a wider application prospect.

The invention discloses preparation and application of a high-performance polyacrylonitrile carbon fiber sizing agent. The technological process comprises the following four steps: step A, carrying out graft polymerization on bisphenol S type epoxy resin and an acrylic monomer to obtain polyacrylic acid water-borne epoxy resin rich in hydrophilic groups; step B, synthesizing a polysiloxane copolymer containing a functional group from a silane coupling agent and dimethyl diethoxy silane; step C, carrying out graft polymerization on the reaction product in the step A and the reaction product in the step B to prepare polyacrylic acid and polysiloxane modified waterborne epoxy resin; d, reacting the prepared product with a curing agent, and curing at high temperature to obtain a modified epoxy resin cured film; the product provided by the invention has good epoxy reaction activity and storage stability, strong adhesive force, better carbon fiber flexibility, flame retardance, thermal oxidation resistance and other mechanical properties, and the compatibility between the carbon fiber and a polymer is improved; and a three-dimensional cross-linked structure formed by curing can improve the tensile strength and the water resistance of the carbon fiber.

The invention relates to the field of cathode electrophoresis emulsions, and particularly discloses a high-temperature-resistant cathode electrophoresis emulsion and a preparation method thereof. The emulsion is prepared from the following raw materials: amine modified epoxy resin and blocked isocyanate, wherein the amine modified epoxy resin is prepared from the following raw materials: DOPO type modified novolac epoxy resin, bisphenol A type epoxy resin E-20, bisphenol S, nonyl phenol, monobasic secondary amine and diaminodiphenyl sulfone. The cathode electrophoresis emulsion provided by the invention has excellent high-temperature resistance, and the cathode electrophoresis paint prepared by matching the cathode electrophoresis emulsion with corresponding cathode electrophoresis paint color paste components has obvious high-temperature resistance advantage compared with the conventional cathode electrophoresis paint after the obtained coating is dried to form a film; meanwhile, various properties such as good chemical stability, deformation stability and the like are also realized.

The application relates to the technical field of insulating materials, and discloses a high-temperature-resistant polyvinyl chloride insulating material and application thereof in cables, which is prepared from p-chloroaniline, formaldehyde, bisphenol S, diethanolamine, phthalic anhydride and the like as raw materials through Mannich reaction, substitution reaction and ring-opening polymerization reaction to obtain phthalic anhydride polyester polyol, and then the phthalic anhydride polyester polyol, 4,4-diphenyl methane diisocyanate and 1,4-butanediol are used as raw materials to obtain modified thermoplastic polyurethane; the modified thermoplastic polyurethane is initiated and crosslinked with polyvinyl chloride resin and the like, is uniformly mixed, and the high-temperature-resistant polyvinyl chloride insulating material is obtained; and the polyvinyl chloride insulating material prepared by the application has good high-temperature resistance and wear resistance.

This invention relates to the fields of environmental and bioanalytical technology, and particularly to a method for simultaneous pretreatment and detection of bisphenol S and bisphenol AF in biological tissues. The technical solution includes a framework process for simultaneous pretreatment and detection of bisphenol S and bisphenol AF in biological tissues. This invention establishes a dual-solvent secondary extraction system composed of n-hexane and methyl tert-butyl ether, achieving differentiated adaptation to different tissue matrices. By combining the advantages of non-polar and moderately polar solvents, it can simultaneously handle the relatively highly polar bisphenol S and the relatively non-polar bisphenol AF in a single extraction process. Furthermore, this method sets key physical parameters during the extraction process according to the histological characteristics of each organ. For heart and lung tissues, specific ultrasonic power is used to ensure thorough cell disruption; while for liver and spleen with high lipid content, different power and time are used to ensure the full release of lipid-bound target substances.

The application provides a thermosetting viologen electrochromic solution and an electrochromic device. The thermosetting viologen electrochromic solution comprises the following components at the following concentrations: 1.5-4.5 g / mL of a diepoxy functional group molecule, 0.5-0.8 g / mL of an anhydride curing agent, 0.1-0.4 g / mL of a viologen compound, and 0.05-0.3 g / mL of a counter electrode material; the diepoxy functional group molecule is at least one selected from bisphenol f diglycidyl ether, bisphenol a diglycidyl ether and bisphenol s diglycidyl ether. The electrochromic device comprises a solid electrochromic layer formed by curing the thermosetting electrochromic solution. The application optimizes the formula, so that the electrochromic solution can achieve thermal curing while ensuring good electrochromic performance, solves the problems of easy leakage and poor safety of the viologen electrochromic device, and can be thermally cured and formed, avoiding the potential adverse effects of the ultraviolet curing method on the performance of the device.

This invention discloses a method for synthesizing high-purity and high-stability trimellitic anhydride bisphenol S ester in the field of polymer monomer synthesis technology. The method includes: dissolving bisphenol S, a catalyst, and a composite stabilizer containing at least two components in an organic solvent under an inert atmosphere; slowly adding a trimellitic anhydride acyl chloride solution dropwise at low temperature; reacting with a stepwise temperature increase; and obtaining the product through precipitation, washing, and recrystallization. This invention optimizes the catalyst system and innovatively introduces a composite stabilizer with synergistic effects to protect the product in situ during the reaction. Combined with precisely controlled reaction and purification processes, it effectively suppresses side reactions and product decomposition. This method can stably prepare trimellitic anhydride bisphenol S ester with a purity of not less than 99% and excellent thermo-oxidative stability, solving the problems of low product purity and poor storage stability in existing technologies, and meeting the application requirements of high-end polymer materials.

The invention discloses a method for decolorizing a bisphenol S crude product without using activated carbon, which comprises the following steps: mixing phenol and mesitylene, heating, adding concentrated sulfuric acid, heating, refluxing and separating water; filtering to obtain a bisphenol S crude product; the method comprises the following steps: dissolving a bisphenol S crude product in a mixed solution of alcohol and water, adding sodium sulfite, and heating and refluxing; and filtering while hot, evaporating the filtrate, and filtering to obtain bisphenol S solid. According to the method, a catalyst does not need to be added, a traditional activated carbon adsorption process is replaced by sodium sulfite pigment reduction, the problems that a bisphenol S product is unstable in chromaticity and prone to pink are effectively solved, and the product quality is remarkably improved. According to the method, the crude product is decolorized without using expensive wooden activated carbon, so that the production cost is reduced, no activated carbon solid waste is generated, the solid waste treatment cost of an enterprise is reduced, and the economic benefit of the enterprise is greatly improved.

The application discloses a CoP / MoS2-C hollow composite piezoelectric material and a preparation method and application thereof in carbon dioxide catalytic desorption, and the preparation of the CoP / MoS2-C comprises the following steps: in the presence of triethylamine, hexachlorocyclotriphosphazene, bisphenol S and ZIF-67 nanomaterials are subjected to condensation reaction in a solvent under stirring, and the polyphosphazene PZS generated in the reaction is wrapped on the surface of the ZIF-67; the obtained ZIF-67@PZS composite material is placed in a tube furnace and subjected to high-temperature calcination under a nitrogen atmosphere to obtain a hollow CoP / Co2P-C material, then the S source and the Mo source are dispersed in deionized water and stirred uniformly, and then subjected to hydrothermal reaction, and finally, the CoP / MoS2-C hollow composite piezoelectric material is obtained through washing and drying in sequence. The CoP / MoS2-C catalyst prepared by the application can accelerate the desorption rate of CO2 of organic amine, improve the regeneration efficiency of the organic amine loaded with CO2, reduce the regeneration energy consumption, and solve the technical bottleneck of the organic amine capturing CO2.

The invention provides a single-component high-temperature-resistant epoxy resin adhesive which comprises the following components in parts by weight: 20-30 parts of epoxy resin; 10 to 20 parts of a diluent; 5-10 parts of a toughening agent; 10-20 parts of a curing agent; 4-8 parts of an accelerant; 1-3 parts of a coupling agent; 3-10 parts of fumed silica; 20 to 40 parts of aluminum oxide; 1-3 parts of color paste; the diluent is an active diluent of which the main body structure contains a benzene ring and two ends contain epoxy groups; the toughening agent is bisphenol S type epoxy resin of which the main body structure contains a polysulfone group and two ends contain epoxy groups. According to the single-component high-temperature-resistant epoxy resin adhesive and the preparation method thereof provided by the invention, the problem that an adhesive in the prior art does not well balance curing temperature and storage time and has high attenuation mechanical strength at high temperature can be solved.

The invention discloses polyethersulfone with low yellowness and narrow molecular weight distribution and a preparation method thereof, and relates to the technical field of polyethersulfone. According to the technical scheme, the preparation method comprises the following steps: adding bisphenol S, 4, 4 '-dichlorodiphenyl sulfone, sodium dodecyl sulfate, a salt-forming agent and a water diversion agent into N-methyl pyrrolidone, introducing protective gas, heating to 120-150 DEG C, and carrying out heat preservation reaction for 1-3 hours; when the water extraction amount reaches a theoretical value, continuously heating to 160-200 DEG C, and keeping the temperature for 2-5 hours to obtain a polyethersulfone resin polymer solution; cooling to 60-150 DEG C, and then carrying out an end-capping reaction for 1-4 hours to obtain an end-capped polyethersulfone resin polymer solution; and cooling to 60-80 DEG C, filtering, adding an organic acid, adjusting the pH value to 4.5-5, stirring, and after sodium dodecyl sulfate is completely separated out, carrying out post-treatment to obtain the low-yellowness narrow-molecular-weight-distribution polyethersulfone resin. The polyethersulfone is low in small molecule content and narrow in molecular weight distribution, and application of the polyethersulfone in downstream injection molding products is facilitated.

The invention discloses a CoP / MoS2-C hollow composite piezoelectric material, a preparation method thereof and application of the CoP / MoS2-C hollow composite piezoelectric material in catalytic desorption of carbon dioxide, and the preparation method of the CoP / MoS2-C hollow composite piezoelectric material comprises the following steps: in the presence of triethylamine, carrying out condensation reaction on phosphonitrilic chloride trimer, bisphenol S and a ZIF-67 nano material in a solvent while stirring, and coating the surface of ZIF-67 with polyphosphazene PZS generated by the reaction; and putting the obtained ZIF-67 (at) PZS composite material into a tubular furnace, carrying out high-temperature calcination in a nitrogen atmosphere to obtain a hollow CoP / Co2P-C material, then dispersing the hollow CoP / Co2P-C material, an S source and a Mo source into deionized water, carrying out uniform stirring, carrying out a hydrothermal reaction, and finally, carrying out washing and drying in sequence to obtain the CoP / MoS2-C hollow composite piezoelectric material. The CoP / MoS2-C catalyst prepared by the invention can accelerate the CO2 desorption rate of organic amine, improve the regeneration efficiency of CO2-loaded organic amine, reduce the regeneration energy consumption and solve the technical bottleneck of capturing CO2 by organic amine.

This invention discloses a method for preparing a polyphosphazene-coated boron nitride composite filler and its cable insulation layer material, belonging to the technical field of polymer composite materials and cable insulation materials. First, hexagonal boron nitride is hydroxylated using a mixed acid oxidation method. Then, hexachlorocyclotriphosphazene is polymerized in situ with bisphenol S to construct a polyphosphazene coating layer on the boron nitride surface, obtaining polyphosphazene-coated boron nitride (BN@PZS). Subsequently, bis-epoxy cashew phenol (DEC) is prepared using cashew phenol as a raw material and grafted onto the surface of BN@PZS to obtain a bis-epoxy cashew phenol-grafted polyphosphazene-coated boron nitride composite filler (BN@PZS-DEC). Cable insulation layer material is prepared using HDPE and EVA as matrices, combined with BN@PZS-DEC, BaTiO3, nano-Al2O3, KH-550, antioxidant 1010, and EBS. The polyphosphazene coating imparts excellent flame retardant properties to the material, while the double-epoxy cashew phenol graft structure improves the interfacial compatibility between the filler and the matrix. Boron nitride and nano-Al2O3 synergistically construct a highly efficient thermally conductive network, and BaTiO3 enhances the material's dielectric properties. The resulting composite material possesses excellent thermal conductivity, dielectric properties, flame retardancy, and electrical insulation properties, making it widely applicable in submarine cables, high-voltage transmission cables, and new energy cables.

The invention discloses polyether sulfone and a preparation method thereof, and relates to the technical field of resin. According to the technical scheme, bisphenol S is partially replaced by biphenol, 4, 4 '-difluorodiphenyl sulfone is partially replaced by 4, 4'-dichlorodiphenyl sulfone to serve as an active compensation monomer, nano calcium carbonate serves as a trapping agent and a conditioning agent, and polyether sulfone is synthesized through efficient polycondensation in an N-methyl pyrrolidone solvent system in a staged heating and staged extraction and supplementation mode. And then carrying out dilution cooling, end sealing, dilution, adsorption treatment, filtration, crushing, graded washing and drying to obtain the polyether sulfone. The polyethersulfone prepared by the method has better thermal performance, mechanical performance and processability on the premise of not influencing the performance of the polyethersulfone, is better applied to the field of membranes, and can also be widely applied to the fields with high added values, such as high-load and high-temperature-resistant components.

The application discloses a method for synthesizing polyether sulfone resin, and specifically comprises the following steps: adding solvent cyclobutane sulfone into a reactor provided with a nitrogen gas pipe, a gas distributor, mechanical stirring and a water separation condensing device, starting stirring, and adding monomer 4,4'-dichlorodiphenyl sulfone, bisphenol S and a salifying agent; after nitrogen replacement, the nitrogen flow is adjusted, and the temperature is raised to 210-240 DEG C; the gas distributor is used for distributing nitrogen, the system is continuously bubbled by nitrogen flow for dehydration, and the reaction is carried out for 3-5 hours; the nitrogen is turned off, the polymerized mucus is poured into water for precipitation, and the polyether sulfone resin is obtained through the steps of crushing, washing and drying. The application uses high-purity nitrogen flow for dehydration, thus avoiding the addition of flammable and toxic organic water-carrying agents, improving operation safety, not polluting products, and being simple in operation and short in reaction period.

The invention provides a recoverable heat-conducting insulating coating, a recoverable heat-conducting insulating coating prepared from the recoverable heat-conducting insulating coating and application, and relates to the technical field of coatings. The recoverable heat-conducting insulating coating comprises the following components: vinyl ester resin, a reactive diluent, sulfur and a heat-conducting filler, wherein the vinyl ester resin comprises bisphenol S type vinyl ester resin and bisphenol F type vinyl ester resin; and the reactive diluent comprises monofunctional acrylic ester and polyfunctional acrylic ester. According to the invention, sulfur is used as an initiator, and curing and recovery of the coating are realized through a reversible vulcanization reaction. According to the invention, the specifically compounded reactive diluent and the specific vinyl ester resin are compounded, and the coating can withstand multiple hot pressing under the action of polar groups. After the recoverable heat-conducting insulating coating is repeatedly hot-pressed for three times under the conditions of 180 DEG C and 5 MPa, the heat conductivity retention rate is 95% or above, and the withstand voltage retention rate is 97% or above.

A two-part epoxy coating composition for producing an adherent coating for articles such as large liquid storage tanks. The two-part epoxy coating composition includes a first liquid comprising a polyepoxide having a described formula and having an estrogenic agonist activity less than that of bisphenol S, and a second liquid comprising a curing agent configured to react with the polyepoxide under ambient conditions.

A two-part epoxy coating composition for producing an adherent coating for articles such as large liquid storage tanks. The two-part epoxy coating composition includes a first liquid comprising a polyepoxide having a described formula and having an estrogenic agonist activity less than that of bisphenol S, and a second liquid comprising a curing agent configured to react with the polyepoxide under ambient conditions.

The invention provides a preparation method of octabromoS ether, and belongs to the technical field of flame-retardant materials. According to the preparation method, bisphenol S and allyl bromide are subjected to a carbon-oxygen coupling reaction under catalysis of a transition metal compound catalyst, bisphenol S diallyl ether and hydrogen bromide are obtained, hydrogen bromide can be recycled in a subsequent addition reaction, and the cost is saved; then hydrobromic acid and bisphenol S diallyl ether are subjected to an addition-electrophilic substitution reaction under catalytic oxidation of hydrogen peroxide to obtain octabromo-S ether, and high-toxicity bromine is not adopted; hydrogen peroxide is reduced into water in the reaction, so that the method is green and environment-friendly.

The invention relates to the technical field of composite photocatalytic materials, in particular to an Au-Ag / g-C3N5 / Ag2V4O11 composite material as well as a preparation method and application thereof. According to the specific technical scheme, the preparation method comprises the following steps: firstly, obtaining a nanosheet Au-Ag / g-C3N5 material in one step by using an in-situ reduction and roasting method; meanwhile, rod-shaped Ag2V4O11 is prepared by a hydrothermal method; and finally, the mixture of the Au-Ag / g-C3N5 and the Ag2V4O11 is stirred and roasted, and the Au-Ag / g-C3N5 / Ag2V4O11 composite material is obtained. The preparation method has the characteristics of simplicity in operation, low cost, environment friendliness, no need of complicated post-treatment steps and the like. Meanwhile, the composite material disclosed by the invention has relatively high photocatalytic activity, has relatively high photocatalytic degradation efficiency on bisphenol A and bisphenol S, and can be used for treating endocrine disrupter pollution in wastewater.