50 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 discloses polyurethane resin with a super-hydrophobic surface and a preparation method of the polyurethane resin, and belongs to the technical field of modified polyurethane materials. According to the invention, 2, 2 '-diallyl bisphenol A and a fluorine-containing thiol monomer react to introduce a fluorine-containing carbon chain, and then fluorinated modified 2, 2'-diallyl bisphenol A and tetramethoxysilane are used for treating nano zinc oxide, so that the content of active oxygen groups is reduced, a siloxane network structure is formed, the action with water molecules is reduced, and the hydrophobicity is improved. Secondly, the 2, 2 '-diallyl bisphenol A reacts with amino propyl isobutyl POSS to generate a benzoxazine structure, the POSS structure is introduced, the nano-size effect of the benzoxazine structure fills limited movement between molecular chains, a cage-shaped structure serves as a cross-linking point, the mechanical property is improved, and hydrophobicity is achieved. When polyurethane is prepared, 3, 3-bis (hydroxymethyl) azetidine and a benzoxazine structure are subjected to ring opening crosslinking, bonding, dispersity and stability of fluorinated modified nanoparticles and a matrix are enhanced, a complex network structure is formed, the surface roughness is increased, the water contact area is reduced, and super-hydrophobicity is achieved.

The invention discloses a preparation method of polysulfone with stable color and reduced yellowness, which comprises the following steps: by using N-methyl pyrrolidone as a reaction solvent, reacting bisphenol A with 4, 4 '-dichlorodiphenyl sulfone in the presence of an acid-binding agent to generate polysulfone; wherein the N-methyl pyrrolidone contains N-methyl pyrrolidone peroxide, and the molar content of the N-methyl pyrrolidone peroxide in the N-methyl pyrrolidone is less than or equal to 0.05%. The polysulfone with stable color and reduced yellowness value can be synthesized by controlling the content of peroxide impurities in the N-methyl pyrrolidone.

The invention provides a polymer and a preparation method and application thereof, the preparation method comprises the following steps: 1, mixing dopa and / or dopamine with an organic solvent, and adding an organic alkali and a silane compound to obtain a first intermediate product; 2, mixing the first intermediate product with an organic solvent, adding a pH regulator, and carrying out a stirring reaction to obtain a second intermediate product; 3, mixing a diphenyl sulfone compound with an organic solvent, adding the second intermediate product, and stirring for reaction to obtain a third intermediate product; 4, mixing the third intermediate product with an organic solvent, and adding ammonium salt to obtain a fourth intermediate product; and 5, mixing the fourth intermediate product, bisphenol A and an organic solvent, adding an inorganic base, and carrying out a stirring reaction to obtain the polymer. When the polymer is used for preparing the alkaline water electrolysis composite membrane, the wettability of the composite membrane and electrolyte can be improved, the surface resistance of a diaphragm is reduced, and the electrolytic efficiency and mechanical stability of the diaphragm are improved.

The invention belongs to the technical field of epoxy resin production, and particularly relates to a low-energy-consumption epoxy resin production process. The method comprises the following steps: firstly, mixing bisphenol A with epoxy chloropropane, and dissolving the bisphenol A by utilizing high-temperature steam and hot water linkage heating; then heating and adding a sodium hydroxide solution for pre-reaction; controlling pressure and temperature, and adding a sodium hydroxide solution for main reaction; after the reaction is completed, under different pressure and temperature conditions, recovering epichlorohydrin by using high-temperature steam, finally, ending recovery through low-temperature steam bubbling, cooling, then heating, adding benzyltriethylammonium chloride and a sodium hydroxide solution for reaction, carrying out water washing and liquid separation twice, and pumping residual toluene resin into a debenzolization kettle. And finally, debenzolization: completing toluene recovery and water removal by using low-temperature steam bubbling to obtain the product. According to the production technology, steam heat in the production process is fully utilized to obtain hot water for heat recycling, the energy utilization rate is greatly increased, operation is easy, and safety is high.

The invention provides hydrogenated bisphenol A epoxy resin and a preparation method thereof, and belongs to the technical field of epoxy resin preparation, the preparation method comprises the following steps: (1) dissolving hydrogenated bisphenol A in a solvent, heating, and carrying out reflux dehydration; (2) mixing the hydrogenated bisphenol A subjected to reflux dehydration with a catalyst, and then adding epoxy chloropropane for etherification ring-opening reaction to obtain chlorohydrin ether; (3) adding an alcohol auxiliary agent, then adding alkali, and carrying out closed-loop epoxidation reaction; (4) supplementing a solvent and water, stirring, standing for layering, removing lower-layer saline water, and taking an upper-layer organic layer; and (5) post-processing to obtain the hydrogenated bisphenol A epoxy resin. According to the method disclosed by the invention, by adding the alcohol auxiliary agent, the closed-loop epoxidation reaction can be thorough by adding alkali under normal pressure, the effect of the closed-loop epoxidation reaction can be remarkably improved, a phase transfer catalyst does not need to be added in the reaction process, and decompression reflux dehydration is also not needed, so that reaction equipment and operation are greatly simplified.

The invention relates to the technical field of high-performance thermosetting resin, and discloses a bismaleimide monomer as well as a preparation method and application thereof. The preparation method comprises the following steps: dispersing bisphenol F and a halogenated nitrobenzene compound in a polar aprotic solvent, and carrying out a heating reaction under the action of an alkaline nucleophilic reagent to obtain a dinitro intermediate; dispersing the dinitro intermediate and a first catalyst in an organic solvent, and carrying out amination reaction under the action of hydrazine hydrate to obtain a diamino structure compound; the preparation method comprises the following steps: reacting a diamino structure compound and maleic anhydride in a polar aprotic solvent to obtain bismaleimide acid; and adding the bismaleimide acid, a second catalyst and a dehydrating agent into a polar aprotic solvent, and carrying out a dehydration cyclization reaction to obtain the bismaleimide monomer. The bismaleimide monomer disclosed by the invention has low dielectric constant, low water absorption rate and excellent dielectric property; the preparation process is simple, the yield is high, and continuous production can be realized.

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 polysulfone resin and a preparation method thereof. The structure of the polysulfone resin is shown as a formula (1), wherein n is more than 0 and less than 1. The polysulfone resin has a specific structure, bisphenol fluorene and bisphenol Z structures are creatively introduced into a traditional polysulfone resin structure, the glass transition temperature and light transmittance of the polysulfone resin can be improved at the same time, the polysulfone resin with high temperature resistance and high light transmittance is obtained, and therefore the application range of a polysulfone resin material can be further widened.

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 provides high-temperature-resistant TPU (thermoplastic polyurethane) resin as well as a preparation method and application thereof. The high-temperature-resistant TPU resin is prepared from the following raw materials: A-type polyester polyol, B-type polyester polyol, diisocyanate, a chain extender and ceramic powder, the A-type polyester polyol comprises at least one of poly (butylene adipate) glycol, poly (butylene adipate) glycol, polycaprolactone polyol and polycarbonate polyol, and the B-type polyester polyol is polyester polyol obtained by carrying out polycondensation on bisphenol A and aliphatic dibasic acid with the carbon atom number being more than 8. The TPU resin not only has good tensile strength and elongation at break, but also has good high temperature resistance, the retention rate of tensile strength can reach 80% or above after 168 hours at 135 DEG C, and the TPU resin can be applied to the fields of high-temperature cable sheaths and the like.

The present invention relates to the application of a catalyst in the reaction of catalytic synthesis of bio-based polycarbonate. In the present invention, isosorbide is used to replace bisphenol A to prepare bio-based polycarbonate with organic carbonate. On the one hand, renewable biomass raw materials are utilized, realizing the green chemistry concept of sustainable development. On the other hand, the toxicity problem of bisphenol A polycarbonate in the field of plastic products for many years is also solved. The method for preparing the bio-based polycarbonate in the present invention is simple and easy to operate. The raw materials are derived from biomass and have a high utilization rate. The obtained bio-based polycarbonate is a brown solid and non-toxic. Its thermal properties are similar to those of bisphenol A polycarbonate, and the weight-average molecular weight can reach 5×10<supgt;5< / supgt>.

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.

According to the present invention, it is possible to provide a resin composition containing a lithium salt and a polycarbonate resin containing a structural unit (A) derived from at least one component selected from the group consisting of bisphenol A, bisphenol C, bisphenol MIBK, bisphenol BPAF, bisphenol Z, and bisphenol AP represented by the following structural formulae, the terminal structure of the polycarbonate resin contains a terminal structure derived from a polyalkylene glycol monoalkyl ether represented by general formula (1). (In general formula (1), R1 represents an alkylene group having 2-20 carbon atoms, R2 represents an alkyl group having 1-20 carbon atoms, and n represents an integer of 3-120. > # imgabs0 #

The present invention discloses a conductive microsphere for an anisotropic conductive film and a preparation method thereof, belonging to the technical field of conductive microspheres. The conductive microsphere for the anisotropic conductive film comprises the following raw materials in parts by weight: 80-100 parts of styrene, 0.5-1.5 parts of an initiator, 6-8 parts of a modified crosslinking agent, 2-8 parts of a dispersant, 10-12 parts of carbon nanotubes, 15-20 parts of graphene, 80 parts of deionized water, and 800 parts of toluene; in the present invention, intermediate 1 is synthesized by reacting 2,2'-diallyl bisphenol A with epichlorohydrin, and the modified crosslinking agent is prepared by reacting intermediate 1 with γ-aminopropyltriethoxysilane. The conductive microsphere for the anisotropic conductive film prepared by the present invention has good electrical conductivity and hardness.

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 relates to a low-chromium, low-formaldehyde and low-bisphenol after-tanning wet finishing process which comprises the following steps: rewetting, retanning and fat liquoring: taking zeolite tanned wet white leather as raw material leather, and carrying out rewetting treatment according to a conventional process; adding a retanning agent, adding carboxymethyl chitosan, adding carboxymethyl chitosan, and adding synthetic oil. White wet leather is tanned by adopting a zeolite tanning agent in a tanning stage, carboxymethyl chitosan is added into a retanning process in tanning wet finishing to replace an original phenolic synthetic tanning agent, the retanning process is adjusted to reduce use of a formaldehyde-containing chemical material, a melamine retanning agent is added to capture free formaldehyde in crust leather, and the content of formaldehyde in the crust leather is reduced. The content of bisphenol and formaldehyde in finished leather is effectively reduced.

The invention discloses a synthesis method of hexafluorodianhydride, which belongs to the field of chemical synthesis, and specifically comprises the following steps: (1) bisphenol AF and an alkaline substance react under a heating condition; then carrying out Kolbe-Schmitt reaction on the reaction product I and carbon dioxide at high temperature and high pressure, and acidifying by adopting inorganic acid to obtain an intermediate I; (2) dissolving the intermediate I in a reaction solvent, adding inorganic alkali, transferring into a nitrogen atmosphere, adding a nickel catalyst, a ligand and metal manganese, transferring into a carbon dioxide atmosphere, carrying out carboxylation reaction, and sequentially quenching, extracting, drying, filtering and carrying out reduced pressure distillation on a reaction product II to obtain an intermediate II; and (3) carrying out heating reflux on the intermediate II and acetic anhydride, and carrying out a dehydration reaction to obtain hexafluorodianhydride. Through the limited three-step synthesis method, the synthesis route is simplified, the synthesis time is shortened, a large amount of waste generated in the synthesis process is avoided, and the yield of hexafluorodianhydride is also improved.

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 discloses a high refractive index polyarylester containing a thiophene structure, the polyarylester has a structure represented by a formula I: # imgabs0 #, in the formula I, R is selected from at least one of phenolphthalein, bisphenol fluorene, bisphenol A, methyl bisphenol fluorene, biether fluorene, isoindolinone and phenolphthalein; and n is selected from 1 to 1000. The high-refractive-index optical polyester is prepared in a way of copolymerizing cardo ring-containing aromatic bisphenol and thiophene acyl chloride, the refractive index (nd) at 589nm can reach 1.64-1.69, the glass-transition temperature can reach 220-300 DEG C, the visible light transmittance is high and is greater than or equal to 88%, and the high-refractive-index optical polyester has a relatively high potential application value in the aspect of high-refractive-index optical resin.

The invention discloses a method for efficiently preparing polyphenyl ether, which belongs to the technical field of engineering plastic preparation, and comprises the following steps: mixing bisphenol A, potassium iodide and sodium hydroxide according to a specific ratio to ensure the effectiveness of the reaction, adding a proper amount of solvent and copper powder catalyst into the reaction mixture, heating at 130-160 DEG C to promote the reaction, and cooling to room temperature to obtain the polyphenyl ether. And after the reaction is completed, precipitating and separating the polyphenyl ether product by adding a precipitating agent. Finally, the product is purified through filtering, washing and drying, an activated carbon carrier and copper nanoparticles are introduced in the catalyst preparation stage, the performance of the final product is improved by reacting with a specific modifier, in addition, the final polyphenyl ether product is suitable for the fields of electronic materials, automobile parts, medical instruments and the like, and the application prospect is wide. The innovation of the invention lies in the optimization of a catalytic system and the accurate control of the performance of a finished product, and the production efficiency and the product quality of polyphenyl ether are effectively improved.

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 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.

The invention relates to a preparation method of high-refractive-index hydrophobic TPU (thermoplastic polyurethane). The preparation method comprises the following steps: selecting bisphenol A and 4, 4 '-diphenylmethane diisocyanate as raw materials, and controlling the mass ratio between 1 part of bisphenol A and 2-3 parts of 4, 4'-diphenylmethane diisocyanate; the preparation method comprises the following steps: adding a mixture of bisphenol A and 4, 4 '-diphenylmethane diisocyanate into a four-necked bottle reactor, selecting anhydrous dimethylformamide as a solvent, and controlling the ratio of the solvent to the total raw materials to be 2-3 parts; the preparation method comprises the following steps: slowly raising the temperature to 80-90 DEG C under the protection of nitrogen, and keeping the stirring speed at 400-600r / min and the reaction time at 1-2 hours, so that bisphenol A and 4, 4 '-diphenylmethane diisocyanate are subjected to primary polymerization reaction; the preparation method comprises the following steps: dropwise adding 15-25 weight percent of zinc sulfide nanoparticles into a prepolymer solution cooled to 40-50 DEG C, and controlling the particle diameter to be 15-20 nanometers; in a clean reactor, 3-6% by weight of potassium perfluorooctyl phosphate and 1-3% by weight of bisphenol S are added as hydrophobic modifiers.