43 results about "Synthetic monomer" patented technology

The invention relates to the field of photosensitive polyimide materials, in particular to a negative photosensitive polyimide photoresist, a polyimide film and application of the negative photosensitive polyimide photoresist and the polyimide film. Compared with the prior art, the water-soluble polyamide acid ester is used as a main raw material, the water-soluble polyamide acid ester is synthesized by using a series of simple and easily available polymeric monomers, the selection of the synthesized monomers is relatively flexible and is not limited to monomers of water-soluble groups such as hydroxyl and carboxyl in molecules, the preparation process is simple, the cost is relatively low, and the current environmental protection requirements are met. The synthesized polyamic acid ester is excellent in water solubility, the polyamic acid ester is combined with a photoinitiator, a cross-linking agent and an organic solvent, and a flame retardant, an inorganic filler, a flatting agent and the like can be selectively added or not added according to needs, so that a negative photoresist with excellent performance is prepared, and the negative photoresist has the advantages of good alkali solubility, high transparency and the like after being prepared into a negative photoetching developing film. The invention has the advantages of high light sensitivity, high resolution, good thermal stability and chemical resistance, good heat and humidity resistance, good adhesion to various base materials and the like, and an inorganic alkali solution can be used as a developing solution.

The invention discloses a copper oxide modified bismuth vanadate photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic reduction of carbon dioxide. The method comprises the following steps: synthesizing a BiVO4 monomer through a hydrothermal method, then mixing and stirring the BiVO4 monomer and a Cu-MOF precursor solution, carrying out electrostatic adsorption compounding, then carrying out calcination treatment to convert Cu-MOF into CuO, loading the CuO on the surface of BiVO4, forming a p-n heterojunction, and preparing the CuO / BiVO4 composite photocatalyst. According to the catalyst, separation of photon-generated carriers is effectively promoted by constructing a heterojunction, the CO2 adsorption and activation capacity is enhanced, and the CO2 photocatalytic reduction performance is remarkably improved; experiments show that the CO yield of the prepared catalyst reaches 36.77 [mu] mol.g <-1 >. H <-1 > in a reaction for 5 hours, which is about 5.7 times that of pure BiVO4, and the catalyst has good stability; the method is simple in process, low in cost and suitable for efficient photocatalytic reduction of CO2 to prepare fuel.

The invention relates to the technical field of polyester synthesis, and discloses flame-retardant anti-dripping polyester and a preparation method thereof. Synthetic monomers of the flame-retardant anti-dripping polyester comprise terephthalic acid, ethylene glycol, a flame retardant a and a flame retardant b, the flame retardant a is 2-carboxyethyl phenyl hypophosphorous acid, and the flame retardant b is [(6-oxo-6H-dibenzo [C, E] [1, 2] oxophosphahexane-6-yl) methyl] succinic acid and / or 2-(diphenyl phosphoryl methyl) succinic acid. According to the invention, the specific flame retardant a and flame retardant b are matched for use and can play roles in an initial combustion stage and a sustained combustion stage respectively, so that the polyester can have better flame retardance and molten drop resistance.

The invention provides halogen-free flame-retardant liquid epoxy resin, solid epoxy resin for powder coating and a preparation method of the solid epoxy resin, and belongs to the technical field of powder coating. The liquid epoxy resin disclosed by the invention is prepared by polymerizing 2, 4-diamino-6-phenyl-1, 3, 5-triazine, formaldehyde, triethyl phosphite, epoxy chloropropane, sodium hydroxide, DMF (Dimethyl Formamide) and the like. The contents of halogen-free flame-retardant elements nitrogen and phosphorus in the product are high, a solid epoxy resin product obtained by carrying out chain extension on liquid epoxy resin serving as a synthetic monomer of solid epoxy resin of the powder coating and bisphenol F is good in flame retardance, the oxygen index reaches 37% or above, and the flame retardance is high. A coating film obtained after the powder coating and an accelerated dicyandiamide curing agent are subjected to low-temperature rapid curing (150 DEG C / 10 min) is high in gloss and leveling grade and good in impact resistance, hardness and the like, and the application requirements of the powder coating are met.

The application relates to the technical field of computer-aided design of high polymer materials, and discloses a polyimide molecular structure generation method and device based on monomer combination, which comprises the following steps: constructing a synthesizable monomer database; constructing a molecular performance prediction model; generating a target polyimide structure based on Monte Carlo tree search; and outputting a candidate scheme. The device corresponds to the method. According to the application, the chemical search space is controlled within a reasonable and operable range by limiting the basic construction monomer; the actual synthesizability of the generated structure is guaranteed from the source by combining the commercially available or known synthesizable monomers; and the intelligent algorithm is used to systematically explore the monomer combination space, so that the discovery efficiency of novel high-performance polyimide materials is significantly improved.

The invention relates to a method for continuously producing poly (p-dioxanone), which comprises the following steps: premixing glycollic acid or a glycollic acid derivative with a ring formation catalyst, and introducing the obtained mixed material and ethylene oxide into a synthesis reaction kettle for reaction; separating and purifying the obtained reaction product, introducing the obtained purified monomer into a polymerization reaction kettle, and adding a polymerization catalyst for polymerization; after polymerization is finished, discharging is conducted, residual materials in the polymerization reaction kettle are subjected to depolymerization treatment to clean the kettle body, after depolymerization is finished, depolymerization products generated in the depolymerization treatment process are discharged, the kettle does not need to be opened for cleaning, and the next round of polymerization production is directly conducted. According to the method disclosed by the invention, the steps of synthesizing the p-dioxanone monomer, separating and purifying the monomer, catalyzing and polymerizing, depolymerizing and cleaning the kettle body and the like are continuously carried out, so that the continuous production of the poly (p-dioxanone) is realized, the side reaction of oligomerization and degradation of the p-dioxanone in storage and transportation can be avoided, and the production cost of the poly (p-dioxanone) is obviously reduced.

The present invention relates to the composition, preparation and application of a retarder for ultra-high temperature cementing and cementing slurry. The synthetic monomers of the high temperature retarder include: 2-acrylamido-2-methylpropanesulfonic acid (AMPS), acrylic acid (AA), N,N-dimethylacrylamide (DMAA), and vinylphosphonic acid (VPA). The high temperature retarder contains a constituent unit A shown in Formula 1, a constituent unit B shown in Formula 2, a constituent unit C shown in Formula 3, and a constituent unit D shown in Formula 4. The ultra-high temperature retarder of the present invention has stable chemical properties and a temperature resistance of up to 250°C. While having high temperature resistance, it does not affect the sedimentation stability of cement slurry at high temperatures, can significantly prolong the thickening time of cement slurry at high temperatures, and the cement stone has higher early strength at low temperatures. It effectively solves the problem of reduced retarding effect caused by severe sedimentation of cement slurry at high temperatures, and can ensure the quality and safety of cementing construction.

The invention relates to the technical field of computer-aided design of high polymer materials, and discloses a monomer combination-based polyimide molecular structure generation method and device, and the method comprises the following steps: constructing a synthesizable monomer database; constructing a molecular performance prediction model; generating a target polyimide structure based on Monte Carlo tree search; and outputting the candidate scheme. The device corresponds to the method. According to the application, the chemical search space is controlled within a reasonable and operable range by limiting the basic construction monomers; combination is carried out based on commercially available or known synthesizable monomers, and the practical synthesizability of the generated structure is guaranteed from the source; the monomer combination space is systematically explored by using an intelligent algorithm, and the discovery efficiency of the novel high-performance polyimide material is remarkably improved.

The invention discloses a battery diaphragm and a secondary battery, and belongs to the technical field of batteries. The battery diaphragm provided by the invention comprises a base membrane and a thermosensitive coating laminated on the surface of at least one side of the base membrane, wherein the thermosensitive coating comprises the following components in percentage by mass: 20-50% of thermosensitive polymer and 45-80% of inorganic particles; a synthetic monomer of the thermosensitive polymer is selected from at least one of the following monomer compounds: at least one of a non-fluorine alkenyl monomer, an alkylene monomer, an unsaturated nitrile monomer, an olefine acid monomer and an ester monomer; the average particle diameter of the inorganic particles is 0.1 [mu] m to 10 [mu] m, and the Mohs hardness of the inorganic particles is 2.0 to 5.0. The thermal sensitive polymer and the inorganic particles in the thermal sensitive coating have a synergistic effect, so that the battery diaphragm not only has a thermal hole closing function, but also has high heat resistance, the thermal shrinkage rate of the battery diaphragm at a high temperature is reduced, and meanwhile, the puncture strength of the battery diaphragm is also improved.

The application discloses a preparation method of a two-dimensional supramolecular polymer based on cation-pi interaction co-assembly, and relates to the technical field of supramolecular polymer materials. + As a cationic unit, a monomer molecule 4,4',4''-(3,7,11-trimethyltriphenylene-2,6,10-triyl)tris(N-dodecylbenzamide) is synthesized as a pi unit, and then the cationic unit and the pi unit are co-assembled to form a two-dimensional supramolecular polymer based on cation-pi interaction co-assembly. The prepared two-dimensional supramolecular polymer has fluorescence color change characteristics and photocatalytic hydrogen evolution performance, further widens the force category of two-dimensional supramolecular materials, and provides a new strategy for the preparation of two-dimensional supramolecular materials and the application of the two-dimensional supramolecular materials in the fields of fluorescence sensing, fluorescence anti-counterfeiting and photocatalytic hydrogen evolution.

According to the environment-friendly filtrate reducer for the high-density water-based drilling fluid and the preparation method of the environment-friendly filtrate reducer, a biodegradable natural polymer is used as a rigid framework, a synthetic monomer side chain with strong adsorption, temperature resistance and salt tolerance characteristics is introduced through graft copolymerization, and an environment-friendly cross-linking agent is adopted to construct a proper three-dimensional network structure. According to the design, the product not only inherits the advantages of good tackifying property, environmental protection and no toxicity of natural macromolecules, but also endows the synthesized polymer with excellent temperature resistance, salt resistance and adsorption performance. A three-dimensional network in product molecules can efficiently bind free water, and the viscosity of drilling fluid filtrate is remarkably improved, so that the three-dimensional network has a synergistic effect with a compact filter cake, and an excellent filtrate loss reduction effect is realized; and a plurality of polar groups contained in the plugging agent can strengthen plugging and inhibition on the well wall and improve the stability of the well wall. The whole preparation process is mild in condition, complex equipment is not needed, the used raw materials are green and environment-friendly, and the final product is low in biotoxicity, easy to degrade, excellent in comprehensive performance and controllable in cost.

The invention discloses a preparation method of a rhodium cluster catalyst and a method for catalyzing olefin hydroformylation by using the rhodium cluster catalyst. The preparation method comprises the following steps: firstly, synthesizing a monomer material CTP-6-CHO; then, a certain amount of CTP-6-CHO and p-phenylenediamine are subjected to a self-assembly reaction, and an organic framework material QTD-COF is prepared; then, the prepared QTD-COF is roasted in an Ar atmosphere, and an N and P double-doped carbon-based material (P-NC) is prepared; finally, the P-NC is used as a carrier material, RhCl3. 3H2O is impregnated and adsorbed, high-temperature reduction is conducted in the H2 / Ar atmosphere, and the rhodium cluster supported catalyst Rh / P-NC is prepared. In the hydroformylation reaction of olefin, an Rh / P-NC catalyst and an olefin substrate are added into a high-pressure reaction kettle, a CO / H2 mixed gas (V: V, 1: 1) is introduced, the reaction is performed for 4-12 hours at 100-140 DEG C, the olefin conversion rate is as high as 99.9%, the yield of aldehyde compounds is as high as 97.4%, and the catalyst can be recycled for 10 times and still keeps activity. According to the method, the preparation method of the Rh / P-NC catalyst is simple, Rh clusters are anchored on the surface of a P-NC carrier in a high-dispersion mode, rich catalytic hydroformylation active sites can be provided, and the utilization rate of Rh metal atoms is effectively increased.

A multistep synthesis of an antimicrobial polybutylene adipate terephthalate (PBAT) material comprising synthesising a monomer, co-polymerisation, mixing with a filler and foaming the co-polymer. The

The embodiment of the invention discloses polyacrylate and a preparation method thereof, a glue solution and a UV (ultraviolet) viscosity-reducing film. Synthetic monomers of the polyacrylate comprise a soft monomer and a hard monomer, wherein the soft monomer comprises a first soft monomer, the structural formula of the first soft monomer is shown in the specification, R1 is hydrogen or methyl, when R1 is methyl, R2 is straight-chain or branched-chain alkyl with the number of carbon atoms being 8-20, and when R1 is hydrogen, R2 is branched-chain alkyl with the number of carbon atoms being smaller than or equal to 4 or straight-chain or branched-chain alkyl with the number of carbon atoms being 8-20; and / or the hard monomer comprises one or more of a first hard monomer and acrylonitrile, the structural formula of the first hard monomer is shown in the specification, R3 is hydrogen or methyl, when R3 is methyl, R4 is branched chain alkyl with the carbon atom number of 4 or an organic group with the carbon atom number of 5-10 and containing a cyclic structure, and when R3 is hydrogen, R4 is the organic group with the carbon atom number of 5-10 and containing the cyclic structure. The soft monomer and the hard monomer adopted in the invention can improve the plating solution resistance of the synthesized polyacrylate.

The present application relates to toothpaste tube sheet material technical field, and disclose a kind of suitable for recycling full plastic composite toothpaste tube sheet material and its preparation process, comprising: synthetic monomer quaternary ammonium salt intercalation agent and double quaternary ammonium salt intercalation agent;Based on covalent bond effect, hydrogen bond effect and electrostatic interaction, using monomer quaternary ammonium salt intercalation agent and double quaternary ammonium salt intercalation agent jointly intercalation modification treatment to graphene oxide, intercalation modification type graphene oxide is prepared;Intercalation modification type graphene oxide is dispersed in ethylene-vinyl alcohol copolymer matrix, and organic-inorganic composite modifier is prepared;Organic-inorganic composite modifier is added to single PP material nine-layer co-extrusion film, nine-layer co-extrusion blow molding film process is used, and full plastic composite toothpaste tube sheet material with thickness of 250~300 μm is prepared, which has very excellent mechanical properties and barrier properties, and is suitable for recycling, and can be used to manufacture toothpaste tube packaging material.

The embodiment of the invention discloses polyacrylate resin, a protective film as well as a preparation method and application of the protective film. Synthetic raw materials of the polyacrylate resin comprise a synthetic monomer, a solvent and an initiator, and the synthetic monomer comprises a monomer containing a cyclic structure and an acrylate monomer with an ester group containing a branched chain structure; based on the total mass of the synthetic monomers, the mass ratio of the monomer containing the cyclic structure is 2wt%-10wt%, and the mass ratio of the acrylate monomer with the ester group containing the branched chain structure is 5wt%-50wt%. According to the invention, a synthetic monomer containing a monomer containing a cyclic structure and an acrylate monomer with an ester group containing a branched-chain structure is subjected to a polymerization reaction in a solvent under the initiation of an initiator, so that the polyacrylic resin is obtained due to the effective ratio of the monomer containing the cyclic structure to the acrylate monomer with the ester group containing the branched-chain structure; the degree of polymerization reaction and the content of a cyclic structure in the polyacrylic resin are controlled, so that the heat resistance and hydrophobicity of the polyacrylic resin are improved; when the polyacrylic resin is used for preparing the protective film, the heat and humidity resistance and plating solution resistance of the protective film can be improved.

The invention discloses a high-strength, wear-resistant composite special plastic and a preparation method thereof in the field of special plastic technology. The plastic comprises the following components in parts by weight: 8-10 parts of a modified first monomer, 1.5-2 parts of a second monomer, 0.25-0.9 parts of a soft segment compound, 5-7.5 parts of a metal salt compound, and 2.8-4.5 parts of polytetrafluoroethylene powder. The invention improves the reaction activity of PEEK matrix polymerization by modifying PEEK synthetic monomers. At the same time, a small amount of soft segment chains containing ether bonds are introduced into the PEEK-based polymer molecular chain to improve the self-lubricating ability of PEEK. By doping with metal ions, a highly stable PEEK matrix material is formed. The PEEK / PTFE composite is adopted to achieve a composite special plastic with high strength, high toughness, low friction coefficient, and low wear rate based on PEEK, which has significant friction reduction and wear resistance in heavy-load, high-speed, and high-temperature friction situations.

The invention relates to the field of polyimide materials, in particular to water-soluble polyamide acid ester, a preparation method thereof and polyimide. Compared with the prior art, the polyamic acid ester provided by the invention is excellent in water solubility, the selection of synthetic monomers is relatively flexible, corresponding water-soluble polyamic acid ester can be synthesized by utilizing a series of simple and easily available polymeric monomers, and the polyamic acid ester is not limited to monomers of water-soluble groups such as hydroxyl and carboxyl in molecules; a series of novel water-soluble polyamic acid ester with good dielectric property, heat-conducting property and the like can be synthesized, the method is simple in preparation process and low in cost, the current environmental protection requirement is met, the mechanical property of the processed, formed and imidized polyamic acid ester is not lost, polyimide with high mechanical property can be prepared, and the polyimide has good application prospects. The requirements of the fields of photosensitive polyimide photoresist, water-soluble polyimide sizing agents and the like on the application of the water-soluble polyimide are met.

The application relates to a preparation method of a uniform and dense priority alcohol-permeable composite membrane, and belongs to the field of membrane separation and technology. The method comprises the following steps: adding a catalyst A containing a copper ion compound, a graphdiyne synthesis monomer and an organic polymer into ethanol, mixing and reacting under certain conditions to prepare a graphdiyne / organic polymer membrane liquid A, and loading the membrane liquid A on a base film through a certain method. A polymer crosslinking agent and a catalyst B are mixed in a certain proportion to prepare a membrane liquid B. The membrane liquid B is heated to make the crosslinking agent vapor fill the container, the graphdiyne / organic film loaded on the base film is placed in the container, the reaction between the organic and the crosslinking agent occurs on the surface of the film, and after the reaction is completed, the film is placed in an environment at 80 DEG C to sufficiently perform a thermal crosslinking reaction. The obtained separation layer is higher in compactness and smaller in thickness, no solvent is used in the gas-solid / gas-liquid interface reaction process, the membrane is more uniform and dense, has higher pervaporation alcohol-permeable performance, and can efficiently and stably recover ethanol.

The invention discloses a preparation method of a carbon-based graded porous biological electrode material of a biomass-resin composite material, belongs to the technical field of microbial electrochemistry, and particularly relates to a preparation method of a porous biological electrode material. Aiming at the problems of low electrode-biological membrane interface electron transfer efficiency, low chemical energy-electric energy conversion efficiency and the like in a microbial electrochemical system, the flexible and controllable preparation of a high-performance, low-cost and graded porous carbon-based electrode material is realized by utilizing renewable biomass resources, and the porous carbon-based electrode material is prepared by compounding with an industrial resin material. And the mechanical property and the modification effect of the carbon-based electrode are enhanced. An industrial-grade resin matrix is introduced as a structural support and a conducting medium, compounding of a resin polymer can effectively improve mechanical defects and enhance durability, the resin material can serve as a structural support and a conducting medium, and target element doping and chemical modification can be achieved by flexibly changing synthetic monomers or adding other components.

The present application relates to the field of analytical detection, and more particularly to a method for detecting nitrogen-containing functional monomers in water-soluble acrylic resin. The steps include S1. preparing a water-soluble acrylic resin sample; S2. respectively performing Py-GCMS testing, FTIR testing and organic element analysis testing on the water-soluble acrylic resin sample; S3. analyzing the test results to determine the content of nitrogen-containing functional monomers in the water-soluble acrylic resin sample. The combination of FTIR testing, Py-GCMS testing and organic element analysis can accurately identify and analyze the synthetic monomers in the water-soluble acrylic product. By controlling the thickness of the sample and correcting the coefficient of the sample's transmittance data, the qualitative and quantitative analysis of nitrogen-containing functional monomers (such as acrylonitrile and acrylamide) in the resin can be achieved, and the detection results are more accurate, providing reliable data support for the component analysis of water-soluble acrylic resin products.

The present invention concerns a process for utilizing at least one waste stream from a production plant for aqueous polymer dispersions from at least one type of monomer M, in which reaction residues are separated from water. Said reaction residues are optionally converted into a pyrolysis oil by a pyrolysis process, which pyrolysis oil is then converted by a gasification process into synthesis gas or said separated reaction residues as such are converted into synthesis gas by a gasification process. The synthesis gas may be used for synthesis of monomers M. The present invention further concerns a production plant for aqueous polymer dispersions comprising an integrated reaction residue treatment facility which is suited for said process.

The present invention relates to a method for producing a monomer composition for synthesizing recycled plastics, the method including the steps of depolymerizing a polycarbonate resin in the presence of an alcohol, monitoring a Raman spectrum of an aromatic diol compound or alcohol obtained from the depolymerization reaction in a reactor where the depolymerization reaction is carried out, and recovering the aromatic diol compound; an apparatus for producing a monomer composition for synthesizing recycled plastics; and a monomer composition for synthesizing recycled plastics, recycled plastics, and molded articles using the same.

The invention discloses a polyurethane solid microsphere with an anticoagulant effect, a preparation method and application thereof, and belongs to the technical field of blood purification. The preparation method comprises the following steps: adding a polyurethane synthetic monomer and an initiator to a solvent to initiate a polymerization reaction; subsequently, adding glycerol and polyethersulfone to the reaction solution for micro-crosslinking and blending; cooling the solution after the reaction is completed, and then obtaining polyurethane anticoagulant microspheres in a coagulation bath through phase inversion; finally, removing impurities and deprotonating the microspheres; the invention also discloses an application of the microspheres obtained by the above method; the polyurethane microspheres of the invention can achieve anticoagulation by reducing the levels of blood calcium ions and coagulation factors, while not affecting the recovery of the coagulation ability in the patient's body.

The invention discloses anti-ultraviolet and anti-aging modified acrylic coating resin, which is prepared from the following ingredients in parts by weight: 40 to 70 parts of acrylic resin synthetic monomers, 1 to 8 parts of acrylic modified polyisocyanate monomers, 1 to 8 parts of ultraviolet light absorbers with hydroxyl structures, 0.01 to 0.1 part of catalysts, 0.01 to 0.5 part of radical initiators and 30 to 60 parts of organic solvents. The preparation method comprises the following steps: preparing a functional monomer containing a double-bond structure and an ultraviolet absorption functional group; and uniformly mixing the functional monomer prepared in the previous step with an acrylic resin synthetic monomer and a free radical initiator, slowly dripping into a reaction kettle containing an organic solvent at a constant speed for reaction, cooling and discharging to obtain the coating resin, and testing the performance of the coating resin. The weather-resistant coating has excellent weather resistance, and the film-forming resin prepared by adopting a polymerization method greatly improves the compatibility of anti-ultraviolet micromolecular organic matters and coating resin, and solves the problems of blooming, mildew spots and the like.

The application discloses a high-temperature-resistant and salt-resistant polymer additive for oil drilling, which is prepared by the following method: S1, carrying out nucleophilic addition on ferrocene formaldehyde and 5-amino-2-chlorobenzoic acid; S2, adding a reducing agent to the system to reduce the intermediate 1; S3, adding a catalyst to carry out aromatic nucleophilic substitution reaction under the condition of strong base and high temperature; S4, finally, carrying out esterification reaction with methacryloyl chloride; and S5, carrying out reaction on the synthetic monomer, acrylamide monomer and alkenyl monomer to obtain the polymer. The application introduces the amphiphilic macromolecular benzene ring into the main chain by reasonably controlling the process, so that the prepared additive has the advantages of less by-product, stable performance, good filtration loss reduction effect, excellent temperature resistance and salt resistance.

The present invention relates to a gradient polymerization synthesized self-crosslinking emulsion and a preparation method thereof. The emulsion includes water, an emulsifier, synthetic monomers and functional monomers; the synthetic monomers include styrene, methyl methacrylate, butyl acrylate, and methacrylic acid; the functional monomers include methacrylic acid phosphate, glycidyl methacrylate, methacrylamide, isostearyl acrylate, trimethylolpropane trimethacrylate, Y-methacryloxypropyltrimethoxysilane, diacetone acrylamide, and adipic dihydrazide. The gradient polymerization technology ensures that the interaction between polymer molecular chains is evenly distributed. At the same time, the copolymer synthesized by the gradient polymerization technology can well exhibit the properties of various monomers; in order to achieve good water resistance, salt spray resistance, weather resistance and other properties, special functional monomers are selected, and the combination of various monomers in a specific ratio enables the coating to have excellent water resistance, neutral salt spray resistance, weather resistance and other properties.

The invention discloses a viscosity-reducing adhesive tape, and relates to the technical field of adhesive materials. The viscosity-reducing adhesive tape comprises a base material layer and an adhesive layer arranged on the base material layer, the effective components of the adhesive layer comprise polyacrylate resin and a cross-linking agent by mass; wherein the weight-average molecular weight of the polyacrylate resin is 250KD-1200KD, synthetic monomers for preparing the polyacrylate resin comprise a soft monomer, a hard monomer and a functional monomer, the functional monomer contains a polar group, and the mass ratio of the functional monomer to the synthetic monomer is 2%-12%; the cross-linking agent can be subjected to a cross-linking reaction with a polar group on the functional monomer to obtain a cross-linked cured product; unreacted polar groups remain in the cross-linked cured product, the cross-linking degree of the cross-linked cured product is not lower than 60%, and the mass content of the orthophthalic plasticizer in the base material layer is lower than 90% of the total content of the plasticizer. After the adhesive layer is cured, migration of the plasticizer in the base material layer can be well inhibited, and the problem that residual adhesive exists in an existing viscosity-reducing adhesive tape is solved or avoided.

The invention provides a phosphorus-nitrogen type flame-retardant curing agent, a preparation method thereof and application of the phosphorus-nitrogen type flame-retardant curing agent in an electronic-grade flame-retardant epoxy resin composition, and belongs to the technical field of preparation of intrinsic flame-retardant curing agents. Aiming at the problems of precipitation, low flame-retardant efficiency, halogen-containing toxicity and the like of the existing epoxy resin flame retardant, phytic acid and urea react to generate a phosphorus-containing intermediate, and the phosphorus-nitrogen type flame-retardant curing agent is prepared by bonding the phosphorus-containing intermediate with an amino compound. According to the curing agent, a phosphorus-nitrogen synergistic flame-retardant group is introduced and is chemically crosslinked with epoxy resin to form an intrinsic flame-retardant system, so that the defect of migration and precipitation of a traditional additive is overcome. When the epoxy resin composition is applied to an electronic-grade epoxy resin composition, the limit oxygen index of the material can reach 31.7% or above, the UL-94 reaches the V-0 grade, and the thermal stratification time T288 is prolonged to 100 minutes or above. Through molecular structure design, the obtained electronic-grade flame-retardant epoxy resin is excellent in performance and high in reliability. And the product is simple in preparation method, wide in synthesized monomer source, excellent in performance, halogen-free and environment-friendly, and has a good application prospect in the fields of 5G, new energy, electric automobiles and the like.

The invention discloses a polyester chip for an LCD (Liquid Crystal Display) optical base film and a preparation method of the polyester chip. The polyester chip is prepared by adopting a semi-continuous production process. Terephthalic acid and ethylene glycol are added in the primary esterification reaction to serve as two synthetic monomers of polyester chips, and a bis (2-hydroxyethyl) terephthalate intermediate is synthesized preliminarily. Ethylene glycol, the pretreated glass beads, a dispersing agent and auxiliary materials are added in the secondary esterification reaction, and slurry is formed through uniform stirring. And introducing the intermediate generated by the primary esterification reaction into the secondary esterification reaction. And after the reaction system is stable, introducing reactants into a polycondensation reaction kettle through a melt filter, so that the reactants continuously react under the conditions of high temperature and high vacuum. And when the molecular chain is increased to a certain degree, granulating and drying the high-temperature melt. The polyester film produced by using the polyester chip has the universal characteristics of high strength, good toughness, chemical corrosion resistance, water resistance, oxygen resistance and the like, and also has the advantages of high gloss and high light transmittance.