350 results about "Aromatic amine" patented technology

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 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 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.

To provide a liquid spray head that has a low environmental impact, is acid-resistant, and is highly reliable. [Solution] A liquid spray head that sprays liquid from a nozzle comprises a first member, a second member, and a cured product of a one-component adhesive that adheres the first member and the second member, wherein the one-component adhesive comprises a bisphenol-free epoxy resin, a curing agent containing an aromatic amine polymer, and an alkylphenol, wherein the alkylphenol is (a) an alkylphenol having at least one ethyl group, or (b) an alkylphenol having 1 to 3 carbon atoms in the alkyl group and at least one methyl group and one isopropyl group.

To provide a liquid spray head having a cured adhesive product that has a low environmental impact, is fast-curing, and acid-resistant. [Solution] The liquid spray head is a liquid spray head that sprays liquid from a nozzle and comprises a first member, a second member, and a cured product of a two-component mixed adhesive that adheres the first member and the second member. The two-component mixed adhesive comprises liquid A, which contains a main component including an epoxy resin that does not contain bisphenol; liquid B, which contains at least one of 2,5-bis(aminomethyl)bicyclo[2.2.1]heptane and 2,6-bis(aminomethyl)bicyclo[2.2.1]heptane and an alkylphenol; and a polymer of an aromatic amine contained in liquid A or liquid B. The alkylphenol is (a) an alkylphenol having at least one ethyl group, or (b) an alkylphenol having 1 to 3 carbon atoms in the alkyl group and at least one methyl group and one isopropyl group.

The application discloses a kind of aromatic amine epoxy resin curing agent and its design method and insulating epoxy resin and its preparation method, belong to insulating technical field.At least two benzene ring structures are designed, and the benzene ring structures are connected by functional bridge bond;An amino functional group is respectively arranged at the two ends of the designed structure;High electron-withdrawing substituent group is not arranged at the ortho position of the designed amino functional group;Get aromatic amine epoxy resin curing agent;Functional bridge bond is arranged at the 1,4 or 1,3 substitution site of benzene ring structure.Multiple aromatic diamines are used as the curing agent component of epoxy resin, rigid aromatic structure is introduced into the epoxy main chain to enhance its thermal stability and improve the glass transition temperature;Functional bridge bond is introduced between benzene rings as breaking benzene ring conjugated structure, to improve electrical performance.Can prepare high-temperature stability and high-resistance high-voltage direct-current insulating epoxy resin.Help to solve the electrical performance of key insulating parts in DC GIS / GIL under the action of high temperature gradient and high electric field.

The invention discloses a high-temperature-resistant water-based polyimide sizing agent for carbon fibers, modified carbon fibers, a resin-based composite material of the modified carbon fibers, a preparation method and application of the resin-based composite material, and belongs to the technical field of advanced composite materials. The sizing agent disclosed by the invention is prepared by carrying out condensation polymerization on aromatic dianhydride and monofunctional aromatic amine to generate polyamide acid and then carrying out an ionizing salt formation process. The sizing agent has excellent storage stability and thermal stability, can effectively improve the wettability of the carbon fiber surface, and significantly improves the interface bonding performance of the carbon fiber reinforced polyimide composite material. The sizing agent provided by the invention can remarkably improve the room-temperature and high-temperature interface bonding strength of the carbon fiber reinforced polyimide composite material, and is suitable for the fields of aerospace, high-end equipment manufacturing and the like.

The application discloses a synthesis method and a reaction system of an aromatic amine compound. The synthesis method of the aromatic amine ionic compound comprises the following steps: in a continuous flow reactor, carrying out a nucleophilic substitution reaction on water, an ionic compound A and a nitrogen source Y to obtain the aromatic amine ionic compound. The preparation method has the characteristics of short reaction time, simple and safe operation and no amplification effect.

The invention belongs to the technical field of functional coatings, and particularly relates to a super-hydrophobic coating and a preparation method thereof. The preparation method comprises the following steps: pretreating a base material, placing the base material in an aqueous solution containing a zinc source and at least one electroplating additive, and carrying out electro-deposition to form a zinc coating on the surface of the base material; electroplating it in a first solution comprising a zinc source and an electrolyte salt; transferring into a second solution containing zinc source and alkali source precursors, and growing on the zinc plating layer by a hydrothermal method to form a ZnO nano-structure array layer; the preparation method comprises the following steps: reacting a trifluoromethyl-containing acylating agent with a hydrazine compound in an organic solvent, adding phenolic hydroxyl-containing aromatic amine or a salt thereof and alkali, and reacting under a reflux condition to obtain a fluorine-containing organic ligand; sequentially putting the zeolite imidazate framework material into a first organic solvent containing a zinc source and a second organic solvent containing a fluorine-containing organic ligand and imidazole or a derivative thereof to react, and enabling the fluorine-containing zeolite imidazate framework material to grow on the surface in situ to obtain the super-hydrophobic coating.

The invention provides a polysubstituted aromatic amine compound (as shown in a general formula I) as well as a preparation method, a pharmaceutical composition and application thereof, and particularly provides a compound with a structure as shown in the general formula I as well as an optical isomer, a medicinal salt or a mixture of the compound and the optical isomer. The compound has good IRAK4 inhibitory activity, so that the compound can be used for treating, preventing and relieving IRAK4 target related diseases, especially for treating autoimmune diseases such as arthritis, inflammatory bowel disease and the like, malignant tumors such as leukemia and the like or other related diseases.

The application discloses a kind of based on machine learning prediction amide bond molecular synthesis conversion rate method, belong to chemical technical field.The application is based on high-throughput experiment collection reaction conversion rate data, establishes data set, and utilizes quantum chemistry calculation means to extract the feature descriptor of reaction related molecule, and the model after training finds that random forest model only needs a small amount of data to reach good prediction accuracy.Through the prediction of unknown aromatic amine molecular conversion rate in amidation reaction, it is found that a small amount of relevant reaction data can be added in the training set of random forest model to significantly improve the prediction performance of unfamiliar data.This has important guiding significance for exploring the synthesis of amide bond and the future application of machine learning to the field of chemical synthesis.

The invention relates to an MOFs (Metal-Organic Frameworks) catalyst for oxidative coupling of aromatic amine as well as a preparation method and application of the MOFs catalyst. And the MOFs catalyst is an MOF-808 catalyst. The structure is simple and clear, and the catalyst has good catalytic activity and cycling stability; h2O2 can be effectively activated, and aromatic amine can be efficiently and selectively oxidized, so that the conversion rate of aromatic amine and the selectivity of products can be improved in a method for preparing azoic compounds by catalyzing aromatic amine oxidation.

The present application relates to a kind of preparation technology of carbon nanotube and its application, including the following steps: first, binary aromatic amine is diazotized to obtain acidic diazonium salt solution;Anionic regenerated cellulose is dynamically immersed in the diazonium salt solution of binary aromatic amine at room temperature;The cellulose regenerated fiber treated by the above steps is drawn and dynamically immersed in sodium hydroxide or sodium acetate aqueous solution;The cellulose regenerated fiber treated by the above steps is drawn into the red-hot iron pipe above 700 DEG C;Then the obtained carbon nanotube is washed, dried, drawn, oiled;Finally, the finished product super-long carbon nanotube is obtained by winding into a roll.The whole preparation process is continuous, and the process is simple, low cost, high yield, high production efficiency, and the carbon nanotube has single conductive property, without subsequent separation, in addition, fibers can exist independently, and will not affect the use effect because of agglomeration together.

The invention provides a liquid red direct dye and a preparation method thereof, and the method comprises the following steps: S1, dispersing 2-amino-5-naphthol-7-sulfonic acid and bis (trichloromethyl) carbonate in water, adjusting the pH value of a reaction system by using a first organic base, and reacting to obtain a scarlet acid aqueous solution; s2, dispersing a sulfo aromatic amine compound and nitrite in water, adjusting the pH value of a reaction system by using inorganic acid, reacting to obtain sulfo aromatic amine diazonium salt precipitate, and performing solid-liquid separation to obtain sulfo aromatic amine diazonium salt; and S3, adding the sulfonic aromatic amine diazonium salt in the step S2 into the scarlet acid aqueous solution in the step S1, adjusting the pH value of the reaction system by using second organic alkali, and reacting to obtain the liquid red direct dye. Through the preparation method, the red direct dye which can stably exist in a liquid form and is suitable for direct use can be obtained.

A green synthesis method of nitrobenzene compounds, in an organic solvent, using aromatic amine as raw material, using an oxidant and a catalyst to form a reaction system, selectively oxidizing aromatic amine into corresponding nitrobenzene compounds, the method selects an oxidant which is green, pollution-free, the catalyst is common, easy to obtain, low in price, and has significant catalytic effect, and the reaction conditions are mild, simple in operation, low in cost, fast in speed, high in selectivity and high in product yield, which is a novel, good scientific research value and industrialization potential synthesis method of nitrobenzene compounds.

The invention relates to a method for comprehensively utilizing kettle residues of an arylamine chain extender, which comprises the following steps: by taking the kettle residues formed by ester exchange and recrystallization of 1, 3-propylene glycol and para aminobenzoate as an initiator, carrying out addition reaction on the initiator and epoxide under the conditions that the temperature is 95-105 DEG C, the pressure is 0-0.15 MPa and no additional catalyst is added, thereby preparing liquid aromatic polyol, the aromatic polyol is a viscous liquid at room temperature, does not need to be heated and melted before use, has the functionality of 2.5-2.9, and can be used as a curing agent of polyurethane, and when the aromatic polyol is used as the curing agent, a polyurethane paving material, a polyurethane waterproof coating, a polyurethane adhesive and a polyurethane pouring sealant prepared from the aromatic polyol have good physical properties. The problem of environmental pollution caused by solid waste is solved, the resource utilization rate of substances is increased, the treatment process is simple and convenient, and the method is suitable for industrial treatment of kettle residues.

This invention belongs to the field of organic synthetic chemistry technology, specifically relating to a selenium-based indoloquinazoline derivative, its preparation method, and its application, comprising: in an organic solvent, using aromatic amine compounds, malononitrile, and diselenoether as raw materials, in the presence of a palladium catalyst and an organic base, at 90°C... o The reaction was carried out under C conditions with stirring to obtain a selenyl indoline quinazoline derivative. This method features mild reaction conditions, simple operation, high yield, and good functional group compatibility, conforming to the principles of green chemistry. Furthermore, the selenyl indoline quinazoline derivative provided by this invention exhibits good inhibitory activity against Plasmodium, providing a drug lead compound for the development of novel antimalarial drugs and holding significant importance for the prevention and / or treatment of malaria.

The invention discloses a compound and an organic electroluminescent device. The compound has a structure as shown in a formula 1. On the basis of an existing carbazole-arylamine material, the structure of the compound is improved, deuteration is introduced to a special position matched with a core area, the optimized compound has good stability, meanwhile, the carrier mobility is further improved, the service life of a device is guaranteed, and compared with the closest prior art, the material has the advantages that the efficiency is high, and the cost is low. And the luminous efficiency of the device is improved. Meanwhile, compared with the existing perdeuterated carbazole-arylamine material, on the basis that the use effect of the material basically reaches the level of the prior art, the design scheme of introducing the deuterated carbazole-arylamine material has better economic benefit and use value. Formula 1.

The invention discloses a method for preparing regenerated polyether polyol by degrading waste polyurethane semi-rigid foam through an acidolysis method, which comprises the following steps: (1) cleaning, drying and crushing the waste polyurethane semi-rigid foam, and removing impurities to obtain foam particles; (2) dehydrating the foam particles; (3) putting the foam particles, an acidolysis agent and a catalyst into a reaction kettle; (4) the materials are heated in three stages, the temperature of the first stage is kept at 140-160 DEG C for 2-3 h, the temperature of the second stage is kept at 180-200 DEG C for 1-2 h, the temperature of the third stage is kept at 200-210 DEG C for 0.5-1 h, and inert gas protection is carried (5) separating out solid residues from the reacted mixed material to obtain a liquid product regenerated polyether polyol; wherein the acidolysis agent is a mixture of maleic acid and succinic anhydride. According to the acid hydrolysis method, the regenerated polyether polyol is recycled from the waste polyurethane semi-rigid foam, the degradation rate is larger than or equal to 98%, the content of aromatic amine in the regenerated polyether polyol is reduced, and later application is facilitated.

The application discloses a silane-modified antioxidant with anti-precipitation and anti-migration, a preparation method and application thereof, and belongs to the technical field of polyethylene pipe materials. The antioxidant is obtained by optimizing and modifying a composite antioxidant, and three different types of antioxidants, namely, hindered phenol, aromatic amine and tocopherol, are chemically bonded to a molecular skeleton to form a composite and multi-mechanism antioxidant active end, so that the antioxidant has the advantages of excellent migration resistance and precipitation resistance, and the durability of the antioxidant is ensured. In addition, the modified antioxidant is applied to the preparation of a silane cross-linked polyethylene pipe material, has better compatibility, and is firmly fixed in a polymer network through covalent bond anchoring, so that the antioxidant molecule provides stable, durable and reliable antioxidant protection for the pipe material, the service life of the pipe material is greatly prolonged, and the total cost of replacement and maintenance is reduced.

Disclosed is a composition for forming a hole transport layer, the composition containing a charge transport polymer having a unit which is represented by a specific structural formula, tetraaryl borate ions, a first solvent that is an aromatic compound containing an oxygen atom, and a second solvent that does not contain an oxygen atom.　The present invention can provide: a composition which contains a polymer having an aromatic amine structural unit and an electron-accepting compound that improves conductivity, contains a mixed solvent that sufficiently dissolves the polymer and the electron-accepting compound, and can be suitably applied to the formation of a hole transport layer; and a photoelectric conversion element which has a hole transport layer that is formed using the composition.

The invention discloses a high and low temperature resistant epoxy resin adhesive for bonding complex components in the aerospace field and a preparation method of the high and low temperature resistant epoxy resin adhesive, relates to the field of aerospace new materials, and aims to solve the problem that an existing epoxy resin adhesive is difficult to maintain high bonding strength in a wide temperature range. Wherein the component A is prepared from liquid epoxy resin, aromatic heterocyclic epoxy resin, super-tough resin and inorganic filler; the component B is prepared from aromatic amine, modified alicyclic amine, polymer particles and a thixotropic agent. The method comprises the following steps: adding the liquid epoxy resin and the aromatic heterocyclic epoxy resin into mixing equipment for mixing, and then adding the super-tough resin and the inorganic filler for mixing to obtain a component A; aromatic amine and modified alicyclic amine are mixed, then polymer particles and a thixotropic agent are added and mixed, and a component B is obtained. According to the adhesive disclosed by the invention, the bonding strength of different materials can be kept at a high level in a temperature range of-160 DEG C to 230 DEG C. The adhesive is used for bonding complex components in the aerospace field.

The invention discloses a method for recovering polycarbonate plastic to obtain an amine high-temperature antioxidant, and belongs to the technical field of plastic recovery. Aromatic amine is used as a nitrogen source, hydroboron and formate are used as in-situ hydrogen donors, and in an inert atmosphere and a heating environment, under the synergistic catalysis of a catalyst and a molecular sieve, the amine high-temperature antioxidant is prepared from polycarbonate based on a one-step method. The reaction path is simple, the selectivity is high, the amine high-temperature antioxidant taking diphenylamine and alkyl diphenylamine as main components can be directly obtained without multi-stage separation and intermediate preparation, and the requirements of simple process flow, low energy consumption and the like are met. The invention provides a high-valued way for polycarbonate recovery, also provides a large-scale raw material source for the field of high-temperature-resistant antioxidants for lubricating oil / fuel / rubber and high polymer materials, and has a wide application prospect.

A Cu x The preparation method of O / BNAD composite photocatalyst adopts a soft template method. Porous h-BN (p-BNNS) is prepared by high-temperature calcination of the precursor. Under low-temperature conditions, a diazotization reaction is used to generate p-BNNS diazonium salt, which is then coupled with an aromatic amine to obtain a porous boron nitride azo compound (p-BNAD) covalently linked by -N=N-azo bonds. Finally, copper oxide / boron azo nitride (Cu) is prepared by vacuum impregnation with copper salt. x This invention utilizes an O / BNAD composite photocatalyst for the efficient reduction of Cr(VI) and the inhibition of bacteria. Under simulated sunlight, Cu... x O / BNAD can effectively reduce Cr(VI) ions, with an apparent kinetic constant of 0.071 min. ‑1 The conversion rate is as high as 88.67%. Under visible light irradiation, it can effectively inhibit the reproduction of Gram bacteria, with an antibacterial rate of 98.0-99.9%.

This invention relates to the field of cigarette component analysis technology, and particularly to smoke adsorption materials, trapping sheets, and methods for detecting volatile components in cigarette smoke. The smoke adsorption material comprises tetraazacalix[2]aromatic[2]triazine supported on a covalent organic framework. It exhibits good trapping effect on various components in cigarette smoke, especially polycyclic aromatic hydrocarbons and aromatic amines in very low concentrations. Furthermore, it has a stable structure, the tetraazacalix[2]aromatic[2]triazine is not easily detached, and it has a long service life. When this material is made into a smoke trapping sheet for the detection of volatile components in cigarette smoke, it can fundamentally reduce the extraction loss of smoke components and improve the final detection range and accuracy.

The application discloses an interface adhesive as well as a preparation method and application thereof, and belongs to the technical field of concrete. A component A contains E-51 epoxy resin, elastic modulus enhancer a (a composite of single-sulfur calcium sulphoaluminate and high-sulfur calcium sulphoaluminate) and bonding enhancer b (nanoscale gel), etc.; a component B is a polyamide curing agent and a modified aromatic amine curing agent. The adhesive has an elastic modulus of about 40 GPa, is between UHPC and NC, can relieve interface stress concentration, can permeate and block microcracks at the same time, and can significantly improve bonding strength and durability. When the adhesive is prepared, the component A and the component B are stirred respectively, are mixed in proportion, and are vacuum degassed, and the adhesive is obtained. When the adhesive is constructed, the adhesive is coated on the surface of existing ordinary concrete first, and then an ultrahigh performance concrete reinforcing layer is poured.

The invention relates to a process for the isomerization of 2, 4 '-methylenediphenylamine and / or, preferably and 2, 2'-methylenediphenylamine, respectively, to 4, 4 '-methylenediphenylamine, comprising: (1) preparing a feed F2 comprising 2, 4'-methylenediphenylamine and / or, preferably and 2, 2 '-methylenediphenylamine and optionally further comprising aniline; (2) providing a catalyst C2 comprising a Bronsted acid; (3) contacting the feed F2 prepared in the step (1) with the catalyst C2 provided in the step (2) to obtain a mixture M2 comprising 4, 4 '-methylenediphenylamine as a reaction product, and (4) optionally separating 4, 4'-methylenediphenylamine from the reaction product obtained in the step (3) wherein the feed F2 in the step (1) comprises 5 wt% or less of formaldehyde.

The invention discloses a multi-component preparation method of an N-sulfonyl fluoride compound, and relates to the field of organic synthesis. The preparation method comprises the following steps: reacting an amine compound with a chlorine source in a solvent to generate an intermediate, then continuously adding a sulfur dioxide source and a fluorine source for reaction, and purifying after one-pot reaction to obtain the N-sulfonyl fluoride compound, the structural general formula of the amine compound is shown in the specification, the structural general formula of the N-sulfonyl fluoride compound is shown in the specification. The reaction general formula is shown in the specification. The method has the advantages of cheap and easily available raw materials, simple operation, mild conditions, safety, environmental protection, short reaction time, good yield and wide substrate range, can be applied to various types of amine substrates, including primary (alkyl / aromatic) amine, secondary (alkyl / aromatic) amine, amide, nitrogen-containing heteroaromatic ring and the like, and has wide application prospects. Wide application prospects are realized in the fields of medicinal chemistry, synthetic chemistry, material science and the like.