911 results about "Aromatic amine" patented technology

The invention discloses a modified maleimide prepolymer, a resin composition and application thereof, the modified maleimide prepolymer is an amine compound modified maleimide prepolymer and is generated by a prepolymerization reaction of maleimide resin and an amine compound, and the weight ratio of the maleimide resin to the amine compound is 100: (1-120); according to the invention, the maleimide resin is modified by a compound containing a special aliphatic ring and aromatic amine structure, and due to the existence of the aliphatic ring or olefin structure, the dielectric property, the water absorption rate and the like of bismaleimide can be reduced; the structure has an excellent thermal expansion coefficient and can meet the requirement of high-order packaging; according to the present invention, the product has characteristics of high temperature resistance, no volatile low molecular substance generation during the reaction process, stable molecular structure and high thermal decomposition temperature, can completely meet the multi-chip assembly manufacturing process requirements in the large-scale integrated circuit, and can obtain the cured product with characteristics of high heat resistance, high toughness, low CTE, low dielectric property and low water absorption rate, and the obtained cured product has characteristics of high heat resistance, high toughness, low CTE, low dielectric property and low water absorption.

The invention relates to the technical field of new materials, and mainly relates to a double-component low-viscosity ultralow-temperature adhesive as well as a preparation method and a use method thereof. The double-component low-viscosity ultralow-temperature adhesive comprises a component A and a component B. The component A comprises the following components in percentage by mass: 20-40% of bisphenol A epoxy resin, 4-8% of aromatic epoxy resin, 6-10% of polyurethane modified epoxy resin, 1-2% of a rubber toughening agent, 5-20% of a diluent and the balance of an additive. And the component B comprises the following components in percentage by mass: 10-40% of a polyether amine curing agent, 10-40% of a fatty amine curing agent, 10-40% of an aromatic amine curing agent and 10-40% of a phenolic aldehyde amine curing agent. The adhesive provided by the invention has relatively strong compressive strength and excellent toughness, can keep good toughness in a low-temperature environment, is not easy to cause brittle rupture, can bear relatively large mechanical load, and is suitable for various industrial applications.

The invention provides a covalent organic framework material as well as a preparation method and application thereof, and belongs to the technical field of covalent organic framework materials. The method provided by the invention comprises the following steps: mixing 2, 4, 6-triformyl phloroglucinol, multi-element aromatic amine and a polar organic solvent, and sequentially carrying out Schiff base reaction and precipitation to obtain a crude product; the ratio of the volume of the polar organic solvent to the mass of the 2, 4, 6-triformyl phloroglucinol is 300 to 500 mL / g; and sequentially washing and drying the crude product to obtain the covalent organic framework material. The method provided by the invention does not need to be operated under an anhydrous condition, the 2, 4, 6-triformyl phloroglucinol does not need to be completely dissolved in a reaction system, the use amount of an organic solvent can be remarkably reduced, a good reaction effect can be achieved without anhydrous and anaerobic tube sealing, and the method is suitable for large-scale production.

The invention provides an epoxy resin composition, a preparation method thereof and a composite material. The epoxy resin composition comprises the following raw material components in parts by mass: 50-100 parts of a resin matrix; 11 to 15 parts by mass of thermoplastic toughening particles; 25-35 parts by mass of an aromatic amine curing agent; 2-8 parts by mass of a reactive diluent; and the molar ratio of the amino group in the aromatic amine curing agent to the epoxy group in the resin matrix is 1.0-1.3. By adjusting the content of each raw material component in the epoxy resin composition, the content of the thermoplastic toughening particles, the resin matrix and the aromatic amine curing agent is in a proper range, and the molar ratio of amino in the curing agent to epoxy group in the resin matrix is controlled. Therefore, the polymer formed by the resin composition has good strength and toughness. Besides, the reactive diluent can reduce the viscosity of the resin matrix, so that the thermoplastic toughening particles can be well dispersed in the resin matrix in the dispersion stage, and the impact resistance of a polymer formed by the resin composition is improved.

The invention discloses an amido amine underwater curing agent for epoxy resin and a preparation method of the amido amine underwater curing agent, and belongs to the field of epoxy resin curing agents. The invention discloses a high-temperature-resistant phenolic resin, which is prepared from the following components in parts by mass: 20 to 50 parts of amine, 20 to 50 parts of single acid, 10 to 40 parts of phenolic compound and 5 to 20 parts of phenolic resin, and the amine is at least one of aliphatic amine, alicyclic amine and aromatic amine. The method comprises the following steps: reacting amine with single acid at high temperature to generate amido amine, and further dehydrating at the temperature to synthesize imidazoline. And the content of imidazoline is controlled through the water yield. And cooling to 120-140 DEG C, and adding the phenolic compound to further react with the phenolic resin. According to the invention, the stability of the imidazoline content is controlled by controlling the water yield of the reaction, and the imidazoline content is the key for solving the underwater bonding performance of the epoxy resin adhesive. The low-temperature curing characteristic and flexibility of the curing agent are improved by introducing different amines, and the curing agent can be better applied to protection, reinforcement and waterproofing of underwater buildings, so that the service life of underwater facilities is prolonged.

Provided is a curing agent for epoxy resins which comprises an aromatic amine compound (A-1) and one or more aromatic amine adducts (A-2) that are products of reaction between an aromatic amine compound and a reactive compound having a functional group capable of reacting with the aromatic amine compound, wherein the aromatic amine adducts (A-2) include an aromatic amine adduct (A-2-1) formed by uniting one molecule of the reactive compound to one molecule of the aromatic amine compound (A-1) by addition reaction. The ratio of the aromatic amine compound to the aromatic amine adduct (A-2-1), (A-1) / (A-2-1), obtained by analysis by liquid chromatography (UV detector), is 0.50-2.00.

The invention provides an imine covalent organic polymer and a preparation method thereof, a negative electrode material and a potassium ion battery. The preparation method comprises the following steps: carrying out first mixing on raw materials including a carbonyl-containing first organic compound, an amino-containing second organic compound and a dispersion liquid to obtain a mixed liquid; carrying out in-situ polymerization reaction on the mixed solution to obtain an imine covalent organic polymer; wherein the first organic compound is nitro-substituted or non-substituted pyrene-4, 5, 9, 10-tetraketone; the second organic compound is selected from any one or more of C6-C12 aromatic amine compounds, C6-C12 heteroaromatic amine compounds and amino-substituted C4-C6 cyclic compounds, and the number of amino groups in each molecule of the second organic compound is greater than or equal to 2. The covalent organic polymer obtained by the preparation method can solve the problem that the structure is easily stacked and is easily dissolved in electrolyte to be damaged when the covalent organic polymer is used as a negative electrode material.

The invention relates to a method for improving the quality of a perovskite thin film, the perovskite thin film and a solar cell, and the method specifically comprises the following steps: introducing aromatic amine or N-containing heterocyclic ring and alpha, beta-unsaturated aldehyde ketone additive into a precursor solution of organic halide, carrying out in-situ Michael addition reaction on the additive, firstly preparing solution components through the additive, and then preparing the organic halide precursor solution; side reaction in the solution is avoided, the irreversible degradation process of the precursor solution is effectively inhibited, and the storage stability of the precursor solution of the organic halide is improved; besides, through an additive and an in-situ Michael addition reaction, the release rate of organic halide is effectively delayed, rapid reaction between the organic halide and metal halide is inhibited, the perovskite nucleation / crystallization process is regulated and controlled, and reaction product functional groups finally reserved on the surface / grain boundary of the thin film can effectively passivate uncoordinated lead ions or iodine defects, so that the performance of the thin film is improved. Therefore, the high-quality perovskite thin film and a corresponding device are obtained.

The invention discloses a heat dissipation type anti-corrosion coating and a preparation method thereof, and belongs to the technical field of anti-corrosion coatings. The heat dissipation type anticorrosive paint comprises a component A and a component B, wherein the component A comprises the following components in parts by mass: 100 parts of heat-conducting water-borne epoxy resin, 4-6 parts of graphene, 0.3-0.5 part of an antioxidant, 0.2-0.4 part of a defoaming agent, 0.2-0.4 part of a flatting agent and 10 parts of first deionized water; the component B comprises the following components in parts by mass: 10-20 parts of a curing agent, 40-60 parts of a toughening agent, 4-6 parts of functionalized boron nitride microspheres and 30-50 parts of second deionized water; the heat-conducting water-borne epoxy resin is 1, 5-naphthalene diphenol modified water-borne epoxy resin; the curing agent is an aromatic amine curing agent; the toughening agent is obtained by carrying out copolymerization on acrylamide, N-(4-aminophenyl) acrylamide, 1, 3, 5-triacryloyl-s-triazine and 3-dimethylamino allyl phosphoric acid; the functionalized boron nitride microspheres are boron nitride microspheres modified by 4-aminobenzoic acid.

The invention discloses an organic compound, a composition, an electronic device and a display panel. The organic compound has a structure as shown in formula (1): (1); the organic compound provided by the invention is an arylamine compound taking dibenzofuran or dibenzothiophene substituted by a heterocyclic group containing a nitrogen atom, an oxygen atom or a sulfur atom as a core structure, and can have a relatively high refractive index; when the organic compound provided by the invention is used in a covering layer of an electronic device, the refractive index of the covering layer can be effectively improved, so that the luminous efficiency of the electronic device is improved, and the electronic device with excellent performance can be realized.

The invention discloses an aromatic amine compound and application thereof, and belongs to the technical field of organic electroluminescent materials. The structure of the aromatic amine compound is as shown in a general formula (1): # imgabs0 #, and the aromatic amine compound has excellent hole mobility and exciton blocking capability under high current density. And the effects of improving the device efficiency and prolonging the service life are displayed.

The invention discloses a method for recycling rigid polyurethane foam by using an acidolysis method, which comprises the following steps: (1) adding polyol and a catalyst into a reaction container, carrying out nitrogen replacement, and heating to a temperature at which acid / anhydride reacts with carbamate bonds and urea bonds of polyurethane; (2) adding part of rigid polyurethane foam particles, uniformly mixing, adding acid / acid anhydride, and continuously adding the rigid polyurethane foam particles until the rigid polyurethane foam particles are completely added after the rigid polyurethane foam is reacted and dissolved; and (3) finally, cooling, and continuously and completely reacting to obtain the rigid polyurethane foam regenerated polyol. Wherein the catalyst is an acidic molecular sieve. According to the method, rigid polyurethane foam is recycled through an acidolysis method, due to the fact that acidolysis products do not contain toxic aromatic amine and molecular sieves are used as catalysts in the acidolysis method, foam decomposition can be accelerated, the viscosity of the products is reduced, follow-up utilization of the products is facilitated, and meanwhile the molecular sieves can be recycled after being filtered.

The present invention discloses a separation membrane based on a reactive support layer, a preparation method and an application, and belongs to the technical field of water treatment membranes. The preparation method includes: (1) subjecting a porous support membrane to an amino grafting reaction to prepare a reactive support membrane; and (2) subjecting an aqueous phase solution and an oil phase solution containing a multi-membered acyl chloride oil phase monomer to interfacial polymerization on the reactive support membrane to prepare a separation membrane based on a reactive support layer; where an aqueous phase monomer in the aqueous phase solution is a semi-aromatic amine or an aromatic amine. In the present invention, the porous support membrane is subjected to the amino grafting reaction to obtain the reactive support membrane, and the interface polymerization is carried out on a surface of the reactive support membrane. Due to the reactive support membrane, a structure of a formed polyamide separation layer can be changed, thereby improving the water permeability of a polyamide separation membrane and maintaining an ion retention property or the ion selectivity thereof. The method of the present invention has the advantages of a simple process, low requirements for equipment and convenience in industrial production, and the prepared high-performance separation membrane has a wide application prospect in the field of water treatment.

The present invention relates to a process for producing a chiral aromatic amine, said process comprising the steps of: a) providing an aromatic imine, and b) contacting said aromatic imine from step a) with an imine reductase, thereby stereoselectively reducing said aromatic imine to a chiral aromatic amine with said imine reductase; and to novel imine reductases capable of catalytic reactions.

The present invention relates to covalent network-based polymers derived from imine and disulphide based crosslinkers with the epoxy. The recyclability of the high-cost fibres is achieved by the synthesis of epoxy vitrimers based on dynamic imine and imine-disulphide bonds. Schiff base chemistry and condensation reaction are used to prepare the crosslinkers with imine linkages as well as imine-disulphide linkages. Various aromatic carbonyl compounds like divanillin, terepthaldehyde, vanillin, 4-hydroxy benzaldehyde, isatin etc. are used for the reaction with various aliphatic and aromatic amines like IPDA, 2-AFD, 4-AFD etc. The prepared epoxy vitrimers showed comparable thermal, mechanical and thermomechanical properties with the conventional DGEBA epoxy-amine system. The carbon / glass fiber-reinforced composite with the vitrimers showed superior mechanical properties beneficial for many engineering applications. The recycling of the vitrimers and composites can be achieved by simple immersion in a suitable solvent system with stirring or agitation at ambient temperature (30-60ºC) conditions. The fibers were easily recovered without losing their morphology, strength and structural integrity. With this invention, wastage of reinforcement carbon fibers and glass fibers can be minimized and the recovered fibers can be used for other applications with a circular economy approach.

The invention relates to a method for constructing a C-N bond or a C-C bond through an insertion reaction of oxygen-sulfur ylide and aromatic amine. According to the method, tris (pentafluorophenyl) borane is taken as a catalyst, oxygen-sulfur ylide and aromatic amine are taken as raw materials, and N-H or C-H insertion reaction is carried out under different temperatures and solvents. According to the method, the defect that a metal catalyst or an oxidizing agent is used traditionally is overcome, and on the basis of the method, various alpha-amino-acid ester derivatives or diaryl acetate derivatives can be obtained by using different aromatic amines and oxygen-sulfur ylide as substrates. According to the method, the raw materials are easy to obtain, the operation is simple, the use of a catalyst and an oxidizing agent is avoided, and the method is a mild, effective, feasible and environment-friendly method for preparing the alpha-amino-acid ester and the diaryl acetate and has important application value.

The invention relates to lubricants. The oil-soluble additive contains a metal salt of an organic acid, an aromatic amine, a succinimide derivative, while it also contains an oil-soluble organic acid

The invention discloses a waste polyurethane material recovery method and a preparation method of a polyurethane product, and belongs to the technical field of waste polyurethane material recovery and reutilization. The recovery method comprises the following steps: a powder preparation stage: crushing a waste polyurethane material by using crushing equipment to obtain polyurethane powder; a premixed liquid preparation stage: mixing polyurethane powder with a degradation agent, a catalyst and a cosolvent in proportion, and uniformly mixing through stirring equipment to obtain a premixed liquid with a certain powder content; in the degradation stage, equipment with a mechanical shearing and extruding function is used for grinding, extruding and shearing the premixed liquid, the reaction process is carried out within a set temperature range, and degradation mixed liquid of the polyurethane material is obtained after the reaction is completed. In the preparation method of the polyurethane product, a part of or all of the polyol raw material adopts a degradation mixed solution. According to the method, the degradation process is low in reagent consumption, low in temperature and short in time, does not need gas protection, and does not generate toxic substances such as aromatic amine, and the obtained high-performance heterogeneous polyhydric alcohol can be directly used for preparing polyurethane products without any post-treatment process.

The invention belongs to the technical field of organic electroluminescence, and discloses an arylamine compound and a luminescent device. The arylamine compound has a structural general formula as shown in a formula (1) or a formula (2), wherein a ring A in the formula (1) is selected from one of formulas (1-1)-(1-4); the ring A in the formula (1) is selected from one of formulas (2-1)-(2-2); and any two adjacent * represent condensation sites of the ring A and naphthyl in the formula (1) and the formula (2). The arylamine compound provided by the invention has the advantages of low driving voltage, high luminous efficiency, long device life and the like, and can be used as a main body material in preparation of light-emitting devices.

To provide a resin composition capable of improving flowability of the resin composition and crack resistance of a cured product thereof.SOLUTION: A resin composition contains an epoxy compound (A), a liquid aromatic amine compound (B), and an inorganic filler (C). The epoxy compound (A) contains a liquid epoxy compound (A1) and a solid epoxy compound (A2). The solid epoxy compound (A2) contains a solid epoxy resin (a) which is at least one kind selected from a group consisting of an isocyanate modified epoxy resin, a naphthalene type epoxy resin, and a biphenyl type epoxy resin. The viscosity of the resin composition at 25°C is 400 Pa s or less.SELECTED DRAWING: Figure 1

The invention provides a light-emitting material, a light-emitting device and a display device, belongs to the technical field of display, and can solve the problems of low efficiency and service life of an existing light-emitting device. The luminescent material comprises a host material and a guest material, the host material is selected from molecules with a first general formula, a second general formula or a third general formula; the first general formula is # imgabs 0, the second general formula is # imgabs 1, the third general formula is # imgabs 2, R1 to R6 are electron donating groups and are selected from electron-rich arylamine groups containing at least one nitrogen atom; the guest material is selected from molecules having a fourth general formula; a fourth general formula: # imgabs3 # X1 is an electron donating group and is selected from electron-rich arylamine groups containing at least one nitrogen atom; x2 is an electron withdrawing group; and R11 and R21 are respectively and independently selected from at least one of hydrogen, deuterium, halogen group, alkyl group, cycloalkyl group, heteroalkyl group, aralkyl group, alkoxy group, aryloxy group, amino group and silyl group.

The invention provides a hydrocyanation reaction method, the hydrocyanation reaction method is carried out in a reaction system containing aromatic amine under the action of a nickel-monodentate phosphite ligand catalyst, the structure of the aromatic amine is # imgabs0 #, and X1-X3 groups and Y1-Y3 groups respectively comprise any one of hydrogen, alkyl, alkoxy, alkylamino, hydroxyl and amino. The nickel-monodentate phosphite ligand catalyst and the aromatic amine with a specific structure are used in the hydrocyanation reaction method, so that the time of the hydrocyanation reaction method can be catalytically shortened, accumulation of ligand hydrolysate can be remarkably reduced or eliminated, and the loss of the catalyst in the reaction is reduced. The hydrocyanation reaction method disclosed by the invention is high in reaction efficiency, stable in catalyst performance, high in raw material conversion rate and product selectivity, and can be used for a preparation process for preparing adiponitrile by a direct hydrocyanation method of large-mass butadiene.

The invention relates to a thiourea-based aromatic porous organic polymer as well as a preparation method and application thereof, and belongs to the technical field of functional polymer adsorption materials. The preparation method comprises the following steps: respectively dissolving a plurality of ternary aromatic amine monomers with different electron pushing (electron donating) effects and cheap binary isothiocyanate monomers, mixing, uniformly shaking, and reacting to obtain a porous organic polymer network which is shown as organogel; and grinding the organogel into powder, then carrying out solvent exchange in dichloromethane, treating in methanol by using a Soxhlet extractor, and finally drying to obtain the product. The thiourea-based aromatic porous organic polymer provided by the invention has good adsorptive selectivity to Au, high adsorption capacity, wide pH adaptation range, good cyclic adsorption performance, simple preparation method and relatively high practical application value.

The invention relates to the technical field of composite material preparation, and discloses a vacuum infusion epoxy resin system which comprises the following components in parts by weight: 50-80 parts of epoxy resin, 10-30 parts of a curing agent, 1-5 parts of an accelerant, 5-15 parts of a flexibilizer, 10-20 parts of filler, 1-3 parts of a coupling agent, 5-10 parts of a diluent, 0.1-1 part of a defoaming agent, 0.5-2 parts of an antioxidant and 0.5-2 parts of a light stabilizer. Low-temperature rapid curing is achieved through the synergistic effect of the modified aromatic amine curing agent and the accelerant, the carboxyl-terminated nitrile rubber toughening agent and the filler form a synergistic toughening system to improve the mechanical property, and the hydrogenated bisphenol A epoxy resin is matched with the light stabilizer and the antioxidant to enhance the weather resistance and the high temperature resistance. The system can be used for preparing composite materials in the fields of wind power generation blades, ships, aerospace and the like, fiber reinforced materials are infiltrated by adopting a vacuum infusion forming process and then are cured and formed, and the problems that an existing resin system is long in curing time and insufficient in mechanical property and weather resistance are solved.

The invention discloses a preparation method of an epoxy resin-based high-electrical-strength composite insulating material. The preparation method comprises the following steps: carrying out ring opening polymerization on 100 parts by weight of epoxy resin matrix and 0.5-10 parts by weight of fluorine-containing epoxy monomer under the action of 0.1-1 part by weight of catalyst to generate fluorine-containing modified epoxy resin; then carrying out a curing reaction with 30-50 parts by weight of a fluorine-containing aromatic amine curing agent to form a high-crosslinking-density network structure; then blending with 2-4 parts by weight of nano filler; and finally, carrying out vacuum degassing, injecting into a mold, and carrying out pre-curing and post-curing to obtain the material. According to the method, the fluorine-containing monomer and the curing agent are introduced, and the nano filler is combined, so that the electrical strength, the aging resistance and the long-term stability of the composite insulating material are remarkably improved, and the composite insulating material has a wide application prospect in the fields of power transmission, electronic packaging, aerospace and the like.

The invention provides a hydrocyanation reaction method, the hydrocyanation reaction method is carried out in a reaction system containing aromatic amine under the action of a nickel-bidentate phosphite ligand catalyst, the structure of the aromatic amine is # imgabs0 #, and X1-X3 groups and Y1-Y3 groups respectively comprise any one of hydrogen, alkyl, alkoxy, alkylamino, hydroxyl and amino. The hydrocyanation reaction method is high in reaction efficiency, accumulation of ligand hydrolysate can be remarkably reduced or eliminated, and the effective content of a catalyst in a reactant is stabilized; in addition, the hydrocyanation reaction method has the advantages of high reaction efficiency, few side reactions, high raw material conversion rate and high product selectivity, and can meet the requirements of a large-scale production process for preparing adiponitrile by using a butadiene direct hydrocyanation method.

The nanofiltration membrane comprises a base membrane and a functional layer, the functional layer comprises a polymer, polymerization unit monomers of the polymer comprise amine monomers and cyanuric chloride, the amine monomers comprise aliphatic amine and aromatic amine derivatives, the aliphatic amine comprises at least two primary amine or secondary amine groups, and the aromatic amine derivatives comprise at least two aromatic amine derivatives. The aromatic amine derivative comprises at least two reaction functional groups and at least one hydrophilic group, the reaction functional groups comprise at least one of amino groups and hydroxyl groups, and the hydrophilic group comprises at least one of sulfonic acid groups, amino groups, hydroxyl groups, carboxyl groups and phosphate groups. Therefore, the nanofiltration membrane provided by the invention has relatively high desalination rate and stable alkali resistance.

The application discloses a kind of sulfonic acid group covalent organic framework / Nafion composite material for proton conduction and preparation method and application thereof, belong to fuel cell technical field.The application first utilizes double sulfonic acid group organic aromatic amine ligand and aldehyde group ligand to construct a kind of sulfonic acid functional two-dimensional covalent organic framework material COF-(SO3H)2 by condensation reaction.COF-(SO3H)2 is compounded with Nafion polymer to prepare proton exchange membrane, and the proton exchange membrane material has excellent proton conduction, and the proton conductivity is 1.338*10 ‑1 S·cm ‑1 (80ºC).The proton exchange membrane material of the application is prepared by solvothermal process and casting method, and the preparation method is simple and easy to operate, which provides a new choice for proton conduction material in fuel cell, and expands the application value of covalent organic framework material.

The invention belongs to the field of organic synthetic chemistry, and relates to a preparation method of melatonin and meerythrine indole derivatives and compounds. Specifically, the indole derivative is efficiently synthesized by taking arylamine and carboxylic acid as raw materials through a one-pot two-step reaction in the presence of catalysis of ferric chloride hexahydrate (FeCl3. 6H2O), a ligand, a diazotization reagent, an additive and a solvent under the conditions of visible light irradiation, inert atmosphere and room temperature. According to the method, visible light induced iron-based LMCT catalysis and iron lewis acid catalysis functions are integrated, and efficient integration of diazotization, decarboxylation, free radical coupling and cyclization reaction is achieved. The method has the advantages that raw materials are cheap and easy to obtain, reaction conditions are mild, substrate applicability is wide, functional group compatibility is good, operation is easy, convenient and safe, and environment friendliness is achieved, gram-level scale preparation can be achieved, and a green and efficient synthesis path is provided for indole compounds with biological activity such as melatonin and meerythrine.

This invention relates to an aromatic amine organic compound and an organic electroluminescent device containing the same, belonging to the field of semiconductor materials technology. The structure of the compound provided by this invention is shown in general formula (1): When the hole transport material or electron blocking layer material of the organic electroluminescent device is prepared by using the aromatic amine compound of this invention, the device voltage can be reduced and the device life can be extended at the same time, especially the device high temperature life is significantly improved.