216 results about "Aliphatic amine" patented technology

The invention discloses a low-temperature fast-curing two-component resin adhesive and a preparation method thereof, and belongs to the technical field of high polymer materials. The resin adhesive is formed by mixing a component A and a component B, the component A comprises epoxy-acrylate hybrid resin, a reactive diluent, a nano reinforcing filler and the like, and the component B comprises a modified aliphatic amine curing agent, a microcapsule low-temperature efficient accelerant, a Mannich base curing agent and the like. Through the synergistic effect of a quaternary curing system and in combination with the rigid-flexible balance design of the hybrid resin, rapid curing at low temperature is achieved, and high strength, high toughness and good storage stability are achieved. The resin adhesive is suitable for the fields of bonding of automobile parts, packaging of electronic elements, repairing of wind power blades, sealing of building structures and the like, and particularly solves the problems that a traditional resin adhesive is slow in low-temperature curing and insufficient in performance.

The invention discloses a heavy-duty waterborne epoxy glass flake anticorrosive coating and a preparation method thereof, and belongs to the field of anticorrosive coatings. Wherein the component A is composed of a water-based phenolic epoxy emulsion, a water-based epoxy resin dispersion, glass flakes, an anti-rust pigment, titanium dioxide, a wetting dispersant, a coalescing agent, a silane coupling agent, a rheological agent, a base material wetting agent, an anti-flash-rust agent and water; the component B consists of a cardanol modified phenolic aldehyde amine water-based curing agent, a modified aliphatic amine water-based curing agent, a modified polyamide water-based curing agent, propylene glycol monomethyl ether and water; the coating is good in constructability, can be self-dried at normal temperature, has the technical advantages of low VOC (volatile organic compound) content, strong adhesive force, excellent water resistance, boiling resistance and chemical resistance, excellent corrosion resistance and the like, and is wide in raw material source and simple in preparation process.

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 invention relates to the technical field of epoxy AB adhesives, in particular to a special epoxy AB adhesive for a back mesh as well as a preparation method and application of the special epoxy AB adhesive for the back mesh, and the epoxy A adhesive is prepared from the following components in percentage by weight: a component A: 40-60% of bisphenol A epoxy resin; 10-20% of carboxyl-terminated nitrile rubber; 5%-10% of nano SiO2; 1-3% of a silane coupling agent; 5-10% of a reactive diluent; 3-8% of a plasticizer; the component B comprises 50-70% of a fatty amine curing agent; 10-20% of polyether amine; 1-3% of an accelerant; and 10-20% of nano calcium carbonate. Through an interpenetrating network structure formed by the carboxyl-terminated nitrile rubber and the epoxy resin, the peel strength of the adhesive reaches 15-20 N / mm and is improved by 50% or above compared with that of traditional epoxy glue, the peeling stress between a back mesh material and a matrix can be effectively resisted, and the stability and reliability of the structure are ensured.

The present disclosure discloses a molybdenum amine complex catalyst and a preparation method and use thereof, wherein, the method for preparing the molybdenum amine complex catalyst comprises the following steps: in the presence of a dispersion medium hydrocarbon oil, reacting a hexavalent molybdenum compound with at least one aliphatic amine compound having C4 or more carbon atoms to obtain an active metal catalyst precursor, and uniformly dispersing the active metal catalyst precursor in the dispersion medium hydrocarbon oil to obtain the molybdenum amine complex catalyst. When the molybdenum amine complex catalyst of the present disclosure is applied to the direct coal liquefaction reaction, it can significantly improve the conversion rate of coal and the conversion rate of asphaltene and preasphaltene to oil, allowing the required reaction pressure to be significantly reduced while achieving an oil yield comparable to that of the iron-based catalyst.

The invention provides a catalytic material, a preparation method thereof and application of the catalytic material in high-purity ethyl aliphatic amine, and belongs to the technical field of fine chemical engineering. The catalytic material provided by the invention has a porous structure, so that the specific surface area of the catalytic material can be remarkably increased, more active sites can be used for contact between reaction raw materials and a catalyst, the reaction process is accelerated, meanwhile, the retention time of the reaction raw materials on the surface of the catalyst is prolonged by the porous structure, and the conversion rate of the reaction raw materials (liquid ammonia) is further improved; active components are loaded on the surface of the AB2O4 type porous composite transition metal oxide, so that the number of active sites can be further increased, and the conversion rate of liquid ammonia is further improved. Results of the embodiment show that when the catalytic material provided by the invention is used for preparing ethyl aliphatic amine by an ethanol catalytic amination method, the conversion rate of liquid ammonia is 95% or above.

The invention belongs to the technical field of sprayed concrete, and particularly relates to rapid early-strength self-repairing sprayed concrete and a construction method thereof. The sprayed concrete comprises a base layer, an interface layer and a functional layer which are sequentially arranged, wherein the functional layer comprises a rapid early strength system and a composite microcapsule system; the composite microcapsule system comprises an inner-layer microcapsule and an outer-layer microcapsule, the inner-layer microcapsule comprises bisphenol A epoxy resin and modified aliphatic amine, and the outer-layer microcapsule comprises modified polyurethane; the rapid early strength system comprises a cementing material, an additive system and a fiber component, the interface layer comprises organic components, namely acrylate emulsion and epoxy resin, and inorganic components, namely nano silicon dioxide and nano aluminum oxide. According to the rapid early strength type self-repairing sprayed concrete and the construction method thereof, a synergistic mechanism of double microcapsules and a rapid early strength system is provided, and synchronous improvement of the self-repairing performance and the early strength of the concrete is achieved through complex interface regulation and accurate design of functional components.

The invention relates to the technical field of chemical production, and discloses a tertiary aliphatic amine production process gas recovery system and an online component detection system, which comprise a storage tank, a one-way valve, a drying tank and a synchronous frame. In the gas recovery process, gas can drive fan blades to rotate, the fan blades drive a synchronous frame to rotate, a driving friction wheel can rotate to push a drying agent in a drying cavity to move, and when an auxiliary friction wheel drives stirring blades to rotate, the drying agent in the drying cavity is fully mixed, so that the drying effect is improved. The pressing rod on the synchronous frame slides on the guide groove, the boss drives the pressing rod and the push rod to horizontally slide in a reciprocating mode, then the rocker arm is driven to swing, the coaxial driving friction wheel is driven to rotate, the positions of the driving friction wheel and the scattering blades are adjusted, and mixing operation is conducted on different positions. The drying agent in the drying tank can be in uniform contact with the gas, the drying effect is improved, the drying agent can be fully utilized, and the gas recovery cost is reduced.

The invention relates to the field of benzoxazine, in particular to modified benzoxazine resin and a preparation method and application thereof.The preparation method of the modified benzoxazine resin comprises the following steps that S1, first-stage reaction is conducted, specifically, an alkane amine compound, formaldehyde and an organic solvent are stirred to be uniform and heated to react; the alkane amine type compound is one or more of short aliphatic chain amine, alicyclic polyamine and a monoamine type compound; s2, second-stage reaction: adding a phenolic compound containing unsaturated alkyl, and heating for reaction; s3, heating, and removing small molecular impurities and by-products under negative pressure to obtain the modified benzoxazine resin, the modified benzoxazine resin and the preparation method and application thereof solve the problem that the existing benzoxazine resin is insufficient in storage stability and processing performance while improving the dielectric property.

The invention discloses a deep-sea pressure-resistant self-stratification solventless coating and a preparation method thereof. The coating comprises a component A and a component B in a mass ratio of (4-6): 1, wherein the component A and the component B are matched with each other; the component A is prepared from epoxy resin, a reactive diluent, a solvent-free hyperdispersant, an anti-corrosion viscosity reducer, an organic silicon defoaming agent, a polyamide wax thixotropic agent, polytetrafluoroethylene powder, hydrophobic nano silicon dioxide, pigment and filler; the component B comprises an alicyclic amine curing agent, polyethyleneimine, long-carbon-chain aliphatic amine and an adhesion promoter. According to the coating disclosed by the invention, through a self-layering effect, excellent wet adhesive force and hydrophobicity of a coating are considered; the problems that a traditional solvent-free coating is high in hydrophilicity of a coating paint film due to high crosslinking density and high polarity and the permeation and diffusion rate of water molecules in the paint film under the high-pressure condition is high are solved, and meanwhile the problem that a common solvent-free coating is used in the deep sea environment and causes permeable foaming due to wet adhesive force is solved. The long-acting anti-corrosion requirement in a deep sea high-pressure environment is met.

The invention relates to the technical field of bridge engineering materials, in particular to an epoxy resin self-repairing material with dynamic covalent bonds for a large-span steel bridge deck and a preparation method of the epoxy resin self-repairing material. According to modified bisphenol A epoxy resin, flexible chain segments and rigid groups are introduced into an epoxy resin molecular chain, so that the toughness and heat resistance of the material are improved; the modified aliphatic amine curing agent and the modified epoxy resin matrix have good compatibility, the formed network structure is more compact, the hardness and the heat resistance of the material are improved, the dynamic covalent bond cross-linking agent adopts a furan-maleimide system containing Diels-Alder reaction, and the dynamic covalent bond cross-linking agent has good mechanical properties and mechanical properties. Wherein a furan group and a maleimide group can be subjected to reversible addition reaction under a mild condition to form a dynamic covalent bond, so that rapid and effective self-repairing of the material when the material is damaged is realized, the self-repairing material adopting the technical scheme has an excellent self-repairing function, a repairing process can be triggered without external stimulation, and the self-repairing material has a good application prospect. And the applicability is higher.

The invention discloses preparation of a lamellar Ti-MWW titanium silicalite molecular sieve and application of the lamellar Ti-MWW titanium silicalite molecular sieve in epoxidation reaction, and belongs to the technical field of synthesis of inorganic chemicals. According to the method, polycyclic aliphatic amines are added in the Ti-MWW molecular sieve synthesis process, the crystallization temperature is reduced in the initial crystallization stage of the molecular sieve to delay the growth speed of the C-axis of the molecular sieve, and the thin-layer Ti-MWW with the shorter C-axis is obtained, so that the diffusion performance of the Ti-MWW molecular sieve is greatly improved, the diffusion rate of reactant molecules in pore channels is increased, and the performance of the Ti-MWW molecular sieve is improved. Therefore, the catalytic performance of the molecular sieve is greatly improved, and the molecular sieve is suitable for catalyzing liquid-phase epoxidation reactions of propylene, butylene, hexene, cyclohexene and octene and the like.

The invention relates to a preparation method of an aliphatic amine polyester ether surfactant and a compound ionic oil-displacing agent thereof, and relates to the technical field of oil field chemicals, the preparation method comprises the following steps: taking aliphatic amine as a raw material, and carrying out ring opening polymerization on the aliphatic amine and ethylene carbonate at a certain temperature under the action of a catalyst to prepare an aliphatic amine polyester ether nonionic surfactant; and compounding the fatty amine polyester ether nonionic surfactant with an anionic surfactant, a cationic surfactant, a phase solvent and water according to a certain proportion to prepare the composite ionic oil displacement agent. The fatty amine polyester ether and the composite ionic oil-displacing agent thereof are superior to a single naphthenic acid amide polyether ester sulfonate anionic oil-displacing agent in the aspects of synergistic effect, stability, salt resistance, hard water resistance, adsorption resistance, interfacial tension stability and binary system oil-displacing performance.

Provided are a novel organic compound and a light-emitting device using the same. In general formula (G1-1), Z1 represents carbon or nitrogen, and if Z1 is carbon, hydrogen (including deuterium) is contained. R1 to R9 each independently represent any one of hydrogen (including deuterium), an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a silicon group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms, a cyano group, and an aliphatic amine group represented by general formula (g1); at least one of R1 to R3 and at least one of R4 to R6 represent a group represented by general formula (g2).

Provided are a preparation method for and the use of an icaritin carbamate prodrug and a salt thereof, which belong to the pharmaceutical field. In particular, provided are an icaritin carbamate prodrug represented by formula 3-N or 7-N and a pharmaceutically acceptable salt thereof, and a preparation method therefor and the use thereof. Specifically, the icaritin carbamate prodrug is formed by subjecting a main metabolic site (3-site or 7-site hydroxyl) of a natural flavonoid compound icaritin to structural modification by means of a chemical synthesis method, and introducing a suitable group at the position. Amines used in such carbamates are aliphatic amines. The presence of the carbamate structure reduces the phase II metabolism of icaritin in SD rats. Compared with an icaritin bulk drug, the 3-N-01 prodrug has a significantly improved oral bioavailability, making same the optimal prodrug. In clinical medication, the prodrug is expected to be able to reduce the administration dosage and improve patient compliance, and is expected to offer an effective strategy for improving the oral bioavailability of phenolic drugs.

To provide a fiber-reinforced composite material that possesses excellent impact resistance and tensile properties, and a molding material for obtaining the same. [Solution] A molding material comprising an epoxy resin composition containing the following components [A] and [B], and carbon fibers satisfying the following condition [a]. [A]: Bifunctional aniline epoxy resin [B]: Aliphatic amine curing agent [a]: Surface specific oxygen concentration O / C is 0.02 or higher and less than 0.08.

The invention relates to injectable cross-linked collagen gel and a preparation method thereof. Two crosslinking strategies of self-crosslinking and crosslinking agent crosslinking are fused together for the first time, and two types of amido bonds, namely amido bonds of a collagen-collagen structure (A) and amido bonds of a collagen-fatty amine-collagen structure (B), are respectively constructed through two crosslinking paths, namely catalysis of collagen polypeptide self-crosslinking and catalysis of fatty amine crosslinking, so that a hard / soft dual crosslinking network is obtained. The relative proportion of the structure A and the structure B in the final product is adjusted through a proper cross-linking process, so that the strength and the stability of the final product are adjusted and controlled, and the use requirements of different injection parts can be met.

The invention provides a heat-conducting adhesive, a heat-conducting bonding layer and a new energy automobile power battery comprising the heat-conducting bonding layer. The thermally conductive adhesive comprises: 40-55 wt% of an epoxy resin; 5-12 wt% of a curing agent, wherein the curing agent is one or more of an aliphatic amine curing agent and an imidazole curing agent; 10-25 wt% of a thermally conductive filler; 3-8 wt% of a toughening agent; 2-6 wt% of a flame retardant; 1-3 wt% of a coupling agent; 0.5 to 2 wt% of an anti-aging agent; and an organic solvent. An adhesive layer formed by curing the heat-conducting adhesive has good mechanical strength and flexibility, can bear loads such as impact and vibration, resists thermal cycling and damp-heat aging, is good in heat conductivity and good in insulating property, is suitable for a new energy automobile power battery, and is particularly suitable for a CTP structure.

The application discloses a kind of preparation of thin-layer Ti-MWW titanium silicalite and its application in epoxidation reaction, belong to inorganic chemical synthesis technical field.The application adds polycyclic aliphatic amine in the synthesis process of Ti-MWW molecular sieve, and reduces the crystallization temperature in the early stage of molecular sieve crystallization to delay the growth rate of molecular sieve C axis, obtain shorter C axis thin-layer Ti-MWW, greatly improve the diffusion performance of Ti-MWW molecular sieve by this method, increase the diffusion rate of reactant molecules in channel, so that the catalytic performance of molecular sieve is greatly improved, suitable for catalyzing propylene, butylene, hexene, cyclohexene, octene liquid phase epoxidation and the like.

The invention belongs to the technical field of chemical coatings, and provides an aliphatic amine waterborne epoxy curing agent as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing aliphatic amine and bisphenol A epoxy resin for addition reaction to obtain a first reaction solution; carrying out reduced pressure distillation on the first reaction liquid to remove fatty amine which does not participate in the reaction, so as to obtain a second reaction liquid; mixing the second reaction liquid with polyether alcohol diglycidyl ether, and carrying out chain extension reaction to obtain a third reaction liquid; and mixing the third reaction liquid with a monoepoxy compound to carry out an end capping reaction, and mixing with water after the end capping reaction is completed to obtain the aliphatic amine waterborne epoxy curing agent. According to the method, the length of a molecular chain can be more effectively controlled, the influence of free amine in a system on various properties is eliminated, the water resistance, corrosion resistance, compression resistance and fracture resistance of the aliphatic amine waterborne epoxy curing agent are improved, the application range is wider, and the application requirements in the fields of heavy corrosion prevention and building materials can be met.

The invention discloses a low-dielectric epoxy resin curing agent and a preparation method thereof, and belongs to the technical field of curing agent preparation, the low-dielectric epoxy resin curing agent comprises the following components: aliphatic amine, alicyclic amine, hexahydrophthalic anhydride, a low-dielectric additive and a diluent; according to the method, a homogenization treatment process aiming at a nano material in the low-dielectric additive is arranged in the method, so that the dispersion uniformity of particles of a mixed material can be effectively ensured, agglomeration is avoided, and the subsequent mixing effect of the material can be effectively ensured; according to the present invention, the reduced pressure distillation treatment can be performed on the mixture, such that the purity of the mixture can be substantially improved so as to ensure that the product meets the established quality standard and the performance requirement, and the production of the product with characteristics of excellent appearance, excellent function and excellent service life can be easily achieved; and the final quality of finished products is guaranteed, and defective products can be removed easily.

The invention relates to a two-component thermally conductive composition comprising: a composition (A) comprising: a silylated polymer, and a rheology agent (r1) selected from amide waxes and / or a rheology agent (r2) comprising: from 1% to 40% by weight of a bis-urea (a) obtained by reacting a primary aliphatic amine with a diisocyanate of molar mass less than 500 g / mol, relative to the total weight of the rheology agent (r2), and from 60% to 99% by weight of a specific plasticizer (b), relative to the total weight of the rheology agent (r2), said rheology agent (r2) being in the form of a suspension of solid particles of the bis-urea (a) in a continuous phase of plasticizer (b), and a composition (B) comprising: at least 1% by weight of a filler (C) relative to the total weight of the composition (B), the filler (C) contributing at least 0.0025% by weight of moisture relative to the total weight of the composition (B),Composition (A) and / or composition (B) further comprising at least one thermally conductive filler. The invention also relates to the use of a filler (C) having a specific moisture content for crosslinking, without the addition of free water, a two-component composition, the two-component composition comprising a composition (A) comprising a silylated polymer, and a composition (B) comprising said filler (C). Figure for the abstract: none.

The invention relates to the technical field of composite materials, in particular to a synergistic flame-retardant epoxy resin-based porous sound insulation composite material and application thereof. The raw materials comprise 100 parts of bisphenol A epoxy resin, 15 parts of an aliphatic amine curing agent, 12 parts of ammonium dihydrogen phosphate, 6 parts of melamine, 4 parts of nano silicon dioxide, 5 parts of sodium chloride, 2 parts of ammonium bicarbonate, 0.8 part of carbon nanotubes and 0.5 part of a silane coupling agent. The synergistic flame-retardant epoxy resin-based porous sound-insulation composite material provided by the invention effectively solves the technical bottleneck that the flame-retardant, sound-insulation and mechanical properties of an epoxy resin-based material in the prior art are difficult to synergistically improve, and has remarkable beneficial effects in multiple aspects.

The invention discloses a waste textile / plastic-based water-based wood adhesive and a preparation method thereof. Aliphatic amine is adopted to chemically degrade waste textiles / plastics in a solvent-free manner, and all components are prepared into the water-based wood adhesive by using aminolysis products. The waste textile / plastic-based wood adhesive prepared by the invention is environment-friendly, and has good bonding performance, weather resistance and chemical resistance.

The invention relates to the technical field of pavement materials, in particular to a pavement modifier and a preparation method thereof. The weight ratio of a component A to a component B in the modifier is 1: (0.75-0.9); the component A comprises the following components in parts by weight: 100 parts of polyurethane modified epoxy resin and 4-7 parts of an epoxy active diluent, and the component B comprises the following components in parts by weight: 6-10 parts of an accelerant, 80-90 parts of a composite curing agent and 5-8 parts of a diluent; in the composite curing agent, the weight ratio of the organic silicon amine curing agent to the aliphatic amine curing agent is (1-2): 1; the organic silicon amine curing agent is obtained by taking tris (2-aminoethyl) amine, hexamethylene diisocyanate and 1, 3-bis (3-aminopropyl)-1, 1, 3, 3-tetramethyldisiloxane as raw materials and reacting according to a molar ratio of 1: 3: 3. The modifier disclosed by the invention is good in toughness and high in strength, can effectively improve the low-temperature performance, flame retardance and stability of asphalt, and meets specific construction requirements.

The invention relates to long-life turbine oil for an ammonia-resistant turboset and a preparation process of the long-life turbine oil. The complexing agent comprises an antioxidant, an anti-rust agent, an anti-wear reagent at extreme pressure, a metal deactivator, a demulsifier, an alkali-resistant stabilizer and base oil, the antioxidant comprises at least two of dinonyl diphenylamine, beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) isooctyl propionate and dialkyl dithiocarbamate, the demulsifier comprises at least two of dialkyl dithiocarbamate, and the alkali-resistant stabilizer comprises at least two of dialkyl dithiocarbamate. The anti-wear reagent at extreme pressure comprises at least two of tricresyl phosphate, thiophosphate and amine salt derivatives thereof, and phosphate and amine salt derivatives thereof, and the alkali-resistant stabilizer comprises polycarboxylic polyether and aliphatic amines. The preparation method comprises the following steps: sequentially adding the components, heating, stirring, mixing at constant temperature, cooling and filtering.

The invention discloses a compound having anti-cancer activity and having a structural formula I or a pharmaceutically acceptable salt thereof: # imgabs0 #, wherein W is selected from the group consisting of substituted saturated / unsaturated branched / linear aliphatic amines, substituted aromatic amines, unsubstituted saturated / unsaturated branched / linear aliphatic amines, and unsubstituted aromatic amines; x is selected from the group consisting of H, a substituted / unsubstituted saturated / unsaturated branched / linear aliphatic alkyl group having at least one carbon atom, a substituted / unsubstituted saturated / unsaturated branched / linear aliphatic alkoxy group having at least one carbon atom, a substituted / unsubstituted aryl group, a substituted / unsubstituted aryloxy group; y is selected from the group consisting of H, a substituted / unsubstituted saturated / unsaturated branched / linear aliphatic alkyl group bonded to a carbonyl group, and a substituted / unsubstituted aryl group bonded to a carbonyl group; z is selected from a group comprising H and OH.

The application relates to the technical field of paint, in particular to a two-component epoxy strong-acid-and-strong-base-resistant heavy-duty paint and a preparation method thereof, which comprises a main paint and a curing agent, the main paint contains a compounded system of bisphenol A epoxy resin and bisphenol F epoxy resin, a composite diluent, a functional filler synergized by flaky glass flake and spherical filler, a silane coupling agent and a special anti-rust pigment; the curing agent is compounded by polyamide, phenolic amine, modified alicyclic amine and modified aliphatic amine, the paint has high solid content and low VOC, has strong adhesion to various substrates, has a bottom-surface-combined function in a single coating layer, is resistant to strong acid, strong base and extreme corrosive environment, is simple to construct, is fast to cure and has a long service life.

The invention discloses a method for preparing fatty tertiary amine with large steric hindrance without an external hydrogen source, and the specific implementation process is as follows: taking a compound A and a compound B as raw materials, and efficiently synthesizing a compound C through a hydrogen borrowing and reducing process of a copper-manganese bimetallic catalyst in a nitrogen atmosphere. The catalyst is prepared by adopting a step-by-step impregnation method: firstly, loading a manganese precursor on a carrier, and drying and roasting to form a manganese species which has the function of pre-adsorbing and fixing large-steric-hindrance amine molecules so as to effectively reduce steric hindrance; and then a copper precursor is loaded, and a manganese auxiliary agent promotes high dispersion of a copper active center, so that a C-OH bond of alcohol is efficiently activated. The method is mild in reaction condition, only water serves as a byproduct, the defects that high-risk reagents and high-temperature and high-pressure hydrogen sources are used and waste is generated in a traditional method are overcome, and the method has the advantages of being high in selectivity, good in atom economy, environmentally friendly, safe and the like and is suitable for large-scale production of drug intermediates and functional chemicals.

The invention discloses a composite nanofiltration membrane which 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 derivatives, the amine monomers comprise aliphatic amine and aromatic amine, the aliphatic amine comprises at least three primary amine or secondary amine groups, and the aromatic amine comprises at least three secondary amine groups. The cyanuric chloride derivative comprises at least one of a compound shown in a formula I and a compound shown in a formula II, and # imgabs0. The nanofiltration membrane provided by the invention has relatively high water flux.