23 results about "Bisphenol Z" patented technology

The invention discloses a quick-curing polyurethane seamless expansion joint material for roads and a preparation method, and belongs to the technical field of road engineering materials. The material is prepared from polyether polyol, polycaprolactone glycol, a bisphenol A epoxy-polyether block isocyanate terminated prepolymer, a methyl phenyl silicon-boron hybrid hydroxyl chain extender, diphenylmethane diisocyanate, calcium carbonate, wollastonite, a hindered amine anti-aging agent and dioctyl phthalate. Wherein the bisphenol A epoxy-polyether block isocyanate terminated prepolymer is prepared by the following steps: reacting bisphenol A with epoxy chloropropane to generate epoxy resin, reacting with polytetramethylene ether glycol, and introducing isophorone diisocyanate; the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation and ethylene glycol reaction on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester; and the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester. The material has the advantages of quick curing property, weather resistance and high-temperature stability, and is suitable for road seamless expansion joint scenes.

The invention relates to the technical field of high-molecular polymers and surface chemical modification thereof, in particular to a low-dielectric-constant polyaryletherketone material and a preparation method thereof, and a flexible copper foil laminated structure and a preparation method thereof. The low-dielectric-constant polyaryletherketone material is obtained by taking a bisphenol monomer and difluorobenzophenone as reaction monomers and carrying out aromatic nucleophilic polycondensation reaction; wherein the bisphenol monomer is selected from a combination of C3-C8 normal or isomeric alkyl substituted hydroquinone and bisphenol containing at least one aryl group; the bisphenol containing at least one aryl group is selected from one or more of bisphenol AP, bisphenol BP, bisphenol Z and bisphenol fluorene; the low-dielectric-constant polyaryletherketone material forms a thin film, the surfactant treatment layer and the grafting layer are sequentially formed on the thin film, then the thin film is compounded with the copper foil, and the formed flexible copper foil laminated structure has high peel strength and low dielectric constant.

The invention relates to a process for preparing an alkoxylated product. The aim of the invention is to provide aromatic polyols for preparing polyurethane-based and polyisocyanurate-based polymers, which ensure good miscibility with the isocyanate component and other components, have a good storage stability and render the end product flameproof. For this purpose, the invention devises a process for preparing an alkoxylated product by reacting bisphenol F with propylene carbonate and / or propylene oxide as propoxylation agent and ethylene carbonate and / or ethylene oxide as ethoxylation agent, the propoxylation agent and the ethoxylation agent being used in a molar ration of 70:30 to 45:55.

The invention belongs to the field of high polymer materials, and relates to a clean construction method of a halogen-free phosphorus-free flame-retardant epoxy polymerization system. The preparation method comprises the following steps: preparing an intermediate I from 2, 2 '-diallyl bisphenol and allyl bromide under the action of potassium carbonate; carrying out rearrangement reaction on the intermediate I to prepare an intermediate II; and carrying out etherification and ring-closure reaction on the intermediate II and epoxy chloropropane under the action of a catalyst and sodium hydroxide to obtain the epoxy resin monomer III. The halogen-free phosphorus-free flame-retardant epoxy resin polymer is obtained by mixing an epoxy resin monomer with a curing agent, melting, performing injection molding and curing. The halogen-free and phosphorus-free flame retardant polymer obtained by the invention can reach the flame retardant grade of UL94-V0 grade.

The invention provides a preparation method of propoxylated bisphenol A, and belongs to the field of propoxylated bisphenol A production. The method comprises the following steps: stirring and mixing bisphenol A and an alkaline aqueous solution to obtain a pre-structured system; dropwise adding epoxypropane into the pre-structured system, and carrying out a heat preservation reaction to obtain a reaction mixture; adding a water-saturated benzene solvent into the reaction mixture, and removing a lower-layer water phase to obtain an upper-layer benzene solution; under the protection of inert gas, removing the benzene solvent in the upper benzene solution to obtain an intermediate product; dissolving the intermediate product by using a ketone solvent, then adding a core-shell structure adsorbent for adsorption treatment, and removing a lower solid phase to obtain a supernatant; and removing the ketone solvent in the supernatant liquid to obtain the propoxylated bisphenol A. According to the application, the improvement of the structure regularity and the purity of the propoxylated bisphenol A is realized at the same time through the collaborative design of'ensuring the structure regularity by directionally regulating and controlling the reaction process' and'improving the purity by stepped precise impurity removal '.

The application provides a new method for degrading bisphenol A in water. A copper-loaded CHA type molecular sieve (Cu x SSZ-13, and x is the content of Cu) is used to activate hydrogen peroxide process to realize efficient oxidative degradation of bisphenol A in water. Compared with the traditional H2O2 / Fe(II) system for oxidatively degrading bisphenol A, the utilization rate of the oxidant is greatly improved, the required amounts of the oxidant and the catalyst are greatly reduced, the catalyst can be reused, and the method has great advantages in improving the degradation efficiency of bisphenol A and widening the pH range.

The invention discloses a preparation method of diallyl bisphenol A diglycidyl ether, and relates to the technical field of epoxy resin materials, and the preparation method comprises the following steps: S1, primary reaction: respectively weighing diallyl bisphenol A and epoxy chloropropane by using a precise electronic scale, and placing the weighed diallyl bisphenol A and epoxy chloropropane in a four-neck flask; according to the preparation method of the diallyl bisphenol A diglycidyl ether, diallyl bisphenol A and epichlorohydrin are subjected to epoxidation reaction under an alkali condition, epichlorohydrin is taken as a solvent, a one-step process is adopted, and the diallyl bisphenol A diglycidyl ether is prepared by controlling the reaction temperature and the reaction time, adjusting the alkali amount and the alkali adding mode, carrying out reduced pressure reflux with water and the like. The diallyl bisphenol A diglycidyl ether with low hydrolyzable chlorine, low total chlorine and high yield is obtained, compared with common bisphenol A epoxy resin, an allyl structure is introduced to a benzene ring, active functional groups in a molecular chain are increased, and the application field of the epoxy resin is expanded.

The invention discloses a flexible hydroxyl bisphenol A glycidyl ether epoxy compound as shown in a formula i, a preparation method thereof and application of the flexible hydroxyl bisphenol A glycidyl ether epoxy compound as a polyurethane optical material modifier. The preparation method comprises the following steps: (1) single-side epoxidation reaction: carrying out epoxidation reaction on bisphenol A and epoxy chloropropane under an alkaline condition to obtain bisphenol A monoglycidyl ether; (2) flexible chain introduction reaction: bisphenol A monoglycidyl ether and diethylene glycol are subjected to protonation activation under acid catalysis, phenolic hydroxyl attacks protonated carbon atoms to form ether bonds, the ether bonds preferentially react with one end of diethylene glycol, and finally the flexible hydroxyl bisphenol A glycidyl ether epoxy compound (formula i) is obtained. The modified polyurethane resin can be used as a modified material of a polyurethane optical resin material, improves toughness, enhances interface interaction, reduces curing stress, avoids element failure caused by stress concentration and is used for pouring, assembling and the like of precise optical components through structural optimization designs such as super-flexible chain segment increase, terminal hydroxylation and gradient epoxy distribution. (i)

The present invention discloses a self-crosslinking ultrafiltration membrane, which comprises: an active monomer mixture, and the active monomer mixture reacts with 4, 4 '-dichlorodiphenyl sulfone to obtain a self-crosslinking pre-crosslinking transition layer; the pre-crosslinking transition layer forms an asymmetric structure layer on the surface of the non-woven fabric through a non-solvent phase inversion process; and immersing the asymmetric structure layer into a phosphorus pentoxide / methanesulfonic acid mixed solution, and carrying out a cross-linking reaction to obtain the cross-linked polysulfone ultrafiltration membrane containing the phenyl sulfone group. Wherein the active monomer mixture is formed by mixing side phenyl bisphenol A, sulfonated bisphenol A and bisphenol A according to a certain proportion. The invention also discloses a preparation method of the self-crosslinking ultrafiltration membrane. Through molecular structure design, the swelling effect caused by solvent permeation is inhibited, the original mechanical strength and thermal stability of the material are maintained, meanwhile, the chemical stability of the material in an organic solvent environment is remarkably improved, the service life of the membrane is prolonged, and the reliability of separation performance is ensured.

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 application provides a preparation method of propoxylated bisphenol A, and belongs to the field of production of propoxylated bisphenol A. The method comprises the following steps: stirring and mixing bisphenol A and an alkaline aqueous solution to obtain a pre-structured system; adding propylene oxide dropwise to the pre-structured system and performing heat preservation reaction to obtain a reaction mixture; adding a water-saturated benzene solvent to the reaction mixture, removing a lower aqueous phase, and obtaining an upper benzene solution; removing the benzene solvent in the upper benzene solution under the protection of an inert gas to obtain an intermediate product; dissolving the intermediate product in a ketone solvent, then adding a core-shell structure adsorbent for adsorption treatment, removing a lower solid phase, and obtaining an upper clear liquid; removing the ketone solvent in the upper clear liquid to obtain propoxylated bisphenol A. The application simultaneously realizes the improvement of the structural regularity and the purity of propoxylated bisphenol A through the synergistic design of "directional regulation of the reaction process to guarantee the structural regularity" and "ladder type precise impurity removal to improve the purity".

This invention belongs to the field of polymer materials, specifically relating to a method for preparing polycarbonate using a non-phosgene melt transesterification method, and the resulting polycarbonate. The invention involves mixing bisphenol A and diphenyl carbonate at an optimized molar ratio, followed by a transesterification reaction to obtain oligomers. The oligomers are then subjected to a pre-condensation reaction under optimized temperature and pressure, with the residence time controlled to achieve an ideal intrinsic viscosity window. The prepolymer is then subjected to a first and final condensation reaction sequentially to obtain polycarbonate. This invention, through the coordinated control of temperature, pressure, and feed molar ratio during the pre-condensation stage, stabilizes the intrinsic viscosity of the prepolymer within the ideal window, laying a high-quality feed foundation for subsequent condensation polymerization. This significantly improves the impact strength and performance stability of the product, while effectively reducing diphenyl carbonate loss and controlling the end-hydroxyl content of the product. This provides a complete method for the preparation of high-performance polycarbonate.

The invention relates to a hydrogenated bisphenol A epoxy resin type colorless transparent adhesive and a preparation method thereof. The preparation method comprises the following steps: (1) under the catalytic action, hydrogenated bisphenol A and epoxy chloropropane are subjected to a ring-opening reaction, then a strong base aqueous solution is added for a ring-closing reaction, and hydrogenated bisphenol A epoxy resin is obtained; and (2) mixing the hydrogenated bisphenol A epoxy resin, the epoxy flexibilizer and the curing agent, and uniformly stirring at room temperature to obtain the epoxy resin. The product disclosed by the invention has excellent optical transparency, ultraviolet resistance and yellowing resistance, excellent low-temperature adhesive property and room-temperature impact resistance, and can be widely applied to the high-tech fields such as optical instruments, 3D printing, ornaments, artificial glass, resin lenses, outdoor equipment, aerospace, automobile industry, construction and building materials, electronic displays and the like; good industrialization prospects are realized.

This invention relates to the fields of organic synthesis and polymer materials, and discloses a method for synthesizing high-viscosity bisphenol F type epoxy resin for the electronic and electrical fields. The method includes: using bisphenol F (BPF) and epichlorohydrin (ECH) as raw materials, and preparing high-viscosity bisphenol F epoxy resin under catalytic and alkaline conditions through ring-opening addition, ring-closing polycondensation, dechlorination purification, and molecular chain regulation. By controlling the molar ratio, reaction temperature, residence time, and dechlorination efficiency, the molecular weight distribution and viscosity can be precisely adjusted, achieving a stable high viscosity range of 8000–30000 mPa·s (25℃), with hydrolyzed chlorine ≤100ppm and inorganic chlorine ≤5ppm. This invention employs a two-step method (chain growth method): first synthesizing a low molecular weight liquid resin, and then extending the chain with bisphenol F to increase viscosity. It includes a continuous green process: using nitrogen protection, waste heat recovery, by-product recycling, and multi-stage water washing and desalination, which effectively reduces energy consumption and waste, and improves production efficiency and product stability.

The invention discloses low-chroma and high-molecular-weight hydrogenated bisphenol A polycarbonate and a preparation method thereof, and the preparation method comprises the following steps: hydrogenated bisphenol A and a sulfonylation reagent are subjected to a reaction in an organic alkali, a low-temperature environment and a stirring condition, and purification is performed to obtain disulfonate; the preparation method comprises the following steps: carrying out melt transesterification reaction on disulfonate, diphenyl carbonate and aliphatic dihydric alcohol in the presence of a basic catalyst, carrying out polycondensation reaction after the reaction is finished, and carrying out bracing, cooling and pelletizing on the reaction product to obtain the hydrogenated bisphenol A polycarbonate with low chroma and high molecular weight, according to the preparation method disclosed by the invention, a strong electron-withdrawing reagent (sulfonylation reagent) is introduced to activate a hydroxyl bond of hydrogenated bisphenol A, so that the reaction efficiency is improved; the strong electron-withdrawing reagent enables oxygen atoms of hydroxyl to have positive electricity through an electron-withdrawing effect, so that the strong electron-withdrawing reagent is more easily attacked by a nucleophilic reagent and is promoted to leave in transesterification, and polycarbonate with high molecular weight can be synthesized.

The application relates to the field of polycarbonate preparation and discloses a bisphenol Z type polycarbonate resin, a structural formula of which is shown as formula I, wherein the number average molecular weight of the bisphenol Z type polycarbonate resin is 40,000-100,000, and the polydispersity is 1-3. The application provides a preparation method of the bisphenol Z type special polycarbonate, the bisphenol Z type polycarbonate prepared by the method is safe and stable in process, has little pollution, the raw materials are prepared by a green and environment-friendly route, the product has good quality and good thermal stability, and industrialized production can be realized. The polycarbonate prepared by bisphenol Z or derivatives thereof and carbonic acid diester under the catalysis of a catalyst has suitable molecular weight distribution, good solubility in a non-halogenated solvent, low cost and the like, different specifications of polycarbonates can be obtained by controlling the reaction, and the obtained polycarbonates have high mechanical strength.

The invention relates to the technical field of high polymer materials, in particular to a preparation method of a high-performance epoxy resin composite material, which comprises the following steps: carrying out secondary molecular distillation purification on epoxy resin to obtain a high-purity raw material; mixing bisphenol A and purified epoxy resin according to a set molar ratio, heating and dissolving, adding a methanol solution and a phosphorus-containing catalyst, and reacting to obtain a resin precursor; the preparation method comprises the following steps: ultrasonically dispersing nanoparticles and a reactive diluent to form a stable dispersion liquid; preheating epoxy resin, adding the dispersion liquid, stirring and ultrasonically adjusting the viscosity of the system; adding a curing agent and a toughening agent into the resin system, and stirring at a constant temperature to obtain impregnating resin; coating a mold with a release agent, injecting impregnated resin, vacuumizing, degassing, heating, supplementing materials, pressurizing, preserving heat, curing, cooling and demolding. The composite material prepared by the method is excellent in mechanical strength, heat resistance, flame retardance and stability, and good in ageing resistance and forming precision; the core technology has a synergistic effect, and the problems of insufficient purity and poor toughness are effectively solved.

The invention discloses a marine high-temperature-resistant composite material based on bismaleimide-cyanate resin and a preparation method of the marine high-temperature-resistant composite material. The marine high-temperature-resistant composite material is formed by a prepreg formed by compounding bismaleimide / cyanate / allyl compound copolymer resin and glass fibers through an autoclave stepped heating and curing process, diallyl bisphenol A is introduced to be subjected to ternary polymerization with bismaleimide and bisphenol A dicyanate to form an interpenetrating network structure, so that the composite material is completely cured to obtain excellent comprehensive performance; allyl functionalized nano silicon dioxide filler is also added, and allyl on the surface of the nano silicon dioxide filler can participate in a polymerization reaction of resin and has good compatibility with a resin system, so that the heat resistance and the mechanical property of the system can be improved on the premise of not remarkably influencing the process viscosity.

The invention provides an oil separation process for purifying bisphenol F. The oil separation process comprises the following steps: S1, adding methylbenzene into a bisphenol F crude product, and stirring for dissolving to obtain a mixture A; s2, dropwise adding n-heptane into the mixture A for oil separation to obtain a mixture B; s3, the mixture B is subjected to standing and liquid separation, and a lower-layer material C and an upper-layer material D are obtained; s4, the upper-layer material D is subjected to rotary evaporation to remove the solvent, high-purity mixed bisphenol F is obtained, the lower-layer material C is cooled and dried, and a bisphenol F product with the high triphenol content is obtained. According to the present invention, the significant solubility difference of the target product bisphenol F and the triphenol impurity in the toluene-n-heptane mixed solvent system is utilized to induce the oil separation phenomenon, such that the liquid-liquid phase separation is achieved, the lower layer material is separated, the obtained upper layer material is subjected to rotary evaporation to remove the solvent, and the total content of the purified three bisphenol F binuclear isomers can achieve more than 93.5%, wherein the content of triphenol is reduced to 4-8%.

This application belongs to the field of polymer compound preparation technology, and specifically relates to a method for preparing high-quality bisphenol A polyoxypropylene ether. Reactor A serves as a preparation vessel for a mixed solution of bisphenol A and propylene oxide, while reactor B serves as a polymerization vessel for bisphenol A polyoxypropylene ether. Solid bisphenol A is used as the initiator; a portion of the initiator is added as solid feed, and the remaining solid bisphenol A is mixed and dissolved with propylene oxide to form a bisphenol A-propylene oxide solution. This bisphenol A-propylene oxide solution is used as a monomer for polymerization. After the reaction, the product is purified to obtain bisphenol A polyoxypropylene ether. The bisphenol A polyoxypropylene ether produced by this method has a light color value, narrow molecular weight distribution, low unsaturation, and stable product quality. The method reduces the initial amount of solid bisphenol A during production, ensuring high-efficiency production while reducing equipment requirements and operational difficulty, eliminating mechanical damage from stirring, and avoiding production accidents and economic losses.

The invention discloses a preparation method of epoxy curing resin with low maintenance requirement and a product thereof. The method comprises the following steps: adding 3-aminophenylboronic acid, 3-amino-1, 2-propylene glycol and anhydrous magnesium sulfate into methanol, dissolving, carrying out rotary evaporation to remove methanol, stirring the obtained product and a polyurethane prepolymer in N, N-dimethylformamide, and carrying out rotary evaporation to remove DMF (Dimethyl Formamide) to obtain a curing agent A; refluxing and stirring epichlorohydrin, diallyl bisphenol A and ethyl triphenyl phosphine acetate, cleaning and purifying, and evaporating to remove methylbenzene, so as to obtain resin B; the preparation method comprises the following steps: adding epoxy resin E12, 1 resin B, polycaprolactone PCL, a curing agent A and zinc acetylacetonate into N, N-dimethylformamide, heating and stirring until all the components are dissolved, thereby obtaining liquid epoxy resin. According to the invention, the epoxy cured resin is endowed with self-repairing capability through the principle of polymer chain segment recombination and dynamic exchange, so that the epoxy cured resin can be self-maintained in service life at low cost, and potential recoverability and environmental protection property are brought.

The invention discloses a bisphenol A ratio type electrochemical sensor, a preparation method and a method for detecting bisphenol A. The sensor takes a glassy carbon electrode as a substrate, the surface of the glassy carbon electrode is modified with an Fc (at) ZIF-8 (at) ZIF-67 / CNHs composite material, and the composite material is prepared by loading ferrocene and carbon nanohorns on a ZIF-8 (at) ZIF-67 core-shell structure. The preparation method comprises the following steps: pretreating a glassy carbon electrode, synthesizing at room temperature to obtain ZIF-8-ZIF-67, sequentially loading ferrocene and carbon nanohorns to obtain a composite material, and dispensing dispersion liquid of the composite material on the glassy carbon electrode to obtain the sensor. During detection, the sensor is placed in a to-be-detected solution with the pH of 6-8, the oxidation current peak values of bisphenol A and ferrocene are detected by adopting a differential pulse voltammetry method, and the concentration of bisphenol A is determined by combining the ratio of bisphenol A to ferrocene with a standard curve. The linear detection range of the sensor is 50-30000ng / mL, the detection limit is 16.7 ng / mL, the preparation process is mild, the operation is simple and convenient, the detection sensitivity is high, the anti-interference performance is good, and the sensor has a good application prospect in the trace detection of bisphenol A in food.

The invention belongs to the technical field of high-molecular compound preparation, and particularly relates to a preparation method of high-quality bisphenol A polyoxypropylene ether, a reaction kettle A is used as a bisphenol A and propylene oxide mixed solution preparation kettle, and a reaction kettle B is used as a bisphenol A polyoxypropylene ether polymerization kettle; a bisphenol A solid is used as an initiator, a part of bisphenol A in the initiator is used as a solid feed, the residual solid bisphenol A and epoxypropane are mixed and dissolved to form a bisphenol A epoxypropane solution, the bisphenol A epoxypropane solution is used as a polymeric monomer for a polymerization reaction, and after the reaction is finished, refining is performed to obtain the bisphenol A polyoxypropylene ether. The bisphenol A polyoxypropylene ether produced by the method is light in color value, narrow in molecular weight distribution, low in unsaturation degree and stable in product quality; in the production process, the initial feeding amount of the solid bisphenol A is reduced, high-efficiency production is guaranteed, meanwhile, the requirement for equipment is lowered, the operation difficulty is lowered, stirring machinery damage is avoided, and meanwhile damage caused by production accidents and economic losses are avoided.