91 results about "Cyclohexylamines" patented technology

The invention discloses a method for preparing a perovskite solar cell based on a fused salt doped Spiro-OMeTAD hole transport layer, and the method comprises the steps: dissolving lead iodide and formamidine iodide in a mixed solvent of N, N-dimethylformamide and dimethyl sulfoxide according to a molar ratio of (0.8-1.5): 1 to prepare an FAPbI3 perovskite precursor solution; the method comprises the following steps: mixing cyclohexylamine trifluoroacetic acid and 4-tert-butylpyridine according to a molar ratio of 1: (8-14), dissolving the mixture in a 70-110 mg / mL Spiro-OMeTAD chlorobenzene solution, adding an acetonitrile solution of LiTFSi, and stirring at normal temperature to obtain a hole transport material Spiro-OMeTAD solution; spin-coating the FTO substrate with an electron transport layer material, spin-coating the electron transport layer with the FAPbI3 perovskite precursor solution, and annealing to form a perovskite thin film; the method comprises the following steps: spin-coating an ammonium butyrate iodide solution on a perovskite thin film to obtain an interface modification layer, spin-coating a hole transport material Spiro-OMeTAD solution on the interface modification layer to obtain a cyclohexylamine trifluoroacetic acid doped Spiro-OMeTAD hole transport layer, and evaporating an interface modification layer and a metal electrode on the Spiro-OMeTAD hole transport layer.

The invention relates to a preparation method of an MWW molecular sieve, the MWW molecular sieve and application of the MWW molecular sieve. Comprising the following steps: crystallizing a mixture containing a silicon source, an aluminum source, inorganic alkali or inorganic acid, a crystallization auxiliary agent, water and a structure-directing agent to obtain the MCM-56 molecular sieve, the original molar composition of the mixture is as follows: SiO2 / Al2O3 is equal to 10 to 300, OH <-> / SiO2 is equal to 0.01 to 1, M < + > / SiO2 is equal to 0.01 to 1, R / SiO2 is equal to 0.005 to 1.0, H2O / SiO2 is equal to 2 to 30, and D2O3 / SiO2 is equal to 0.01 to 3; wherein M is an alkali metal element, R is a structure-directing agent, D2O3 is a crystallization auxiliary agent, and D is a boron element or a gallium element; the structure directing agent is cyclohexylamine. Cyclohexylamine which is low in toxicity, low in price and easy to obtain serves as a template agent, and the MCM-56 molecular sieve is synthesized in one step through a hydrothermal crystallization method. The synthesis route is simple and feasible, the operation is controllable, and the production cost can be effectively reduced by using the cheap structure-directing agent.

The present application relates to a kind of catalyst and its preparation method, the refining method of aniline, wherein the catalyst includes core and shell, the core includes acidic microporous-mesoporous composite molecular sieve and metal oxide loaded on the molecular sieve, the shell includes hydrophobic porous carrier layer and metal element loaded on the porous carrier layer.The catalyst of the present application can promote the conversion of cyclohexylamine and phenol in aniline into macromolecule, high-boiling substance, which can be quickly removed by simple rectification subsequently, finally realizing the synchronous efficient removal of phenol and cyclohexylamine, significantly improving the quality of aniline, while reducing the energy consumption of refining system and aniline loss, and no new impurities are introduced throughout.

The invention relates to the technical field of chemistry and chemical engineering, in particular to a treatment method of rubber vulcanization accelerator CBS mother liquor. The treatment method of the rubber vulcanization accelerator CBS mother liquor comprises the following steps: S1, filtering the mother liquor to obtain first filtrate; s2, performing primary phase separation on the first filtrate to obtain a primary water phase and a primary oil phase; s3, mixing the primary oil phase and a sulfuric acid solution, and performing secondary phase separation to obtain a secondary water phase and a secondary oil phase; s4, rectifying the primary water phase, the secondary water phase and alkali to obtain kettle liquid and a cyclohexylamine solution; s5, sequentially performing Fenton oxidation, adsorption and filtration on the kettle liquid to obtain second filtrate; and S6, sequentially carrying out triple-effect evaporation and biochemical treatment on the second filtrate. According to the treatment method, the recovery rate of cyclohexylamine in the CBS mother liquor is increased, and the COD is greatly reduced.

To provide a scaled-up synthesis of lomustine under continuous flow conditions.SOLUTION: The present disclosure provides processes and apparatuses for the scaled-up manufacture of lomustine via continuous flow manufacture. Such continuous flow processes may optionally include the crystallization of lomustine and the apparatuses may optionally include crystallization apparatuses / reactors in either batch or continuous flow design. In one aspect of the disclosure, there is provided a process for making lomustine comprising: treating solutions of 2-chloroethylisocyanate with a solution of cyclohexylamine with continuous-flow pumps in a gram-flow reactor to form a combined solution; adding deionized water with a continuous flow-pump to the combined solution to form a liquid-organic phase solution; extracting the organic phase from the solution; and treating with a solution of t-butyl nitrite with a continuous flow pump in a gram flow reactor to form lomustine.SELECTED DRAWING: None

The invention discloses a tissue slice in-situ hybridization pretreatment liquid and a use method, the tissue slice in-situ hybridization pretreatment liquid is characterized in that the tissue slice in-situ hybridization pretreatment liquid is composed of a compound component A solution and a surfactant component B solution, the compound component A solution and the surfactant component B solution have a proper octanol / water partition coefficient and can effectively remove endogenous fluorescent substances, and a solvent is a hydrophilic solvent; wherein the component A is one or a combination of more of bis (hexamethylene) triamine, dodecyl pyridine chloride, cyclohexylamine, isophorone diamine, N-benzylamino ethanol, N, N, N, N-tetramethyl-1, 6-hexamethylenediamine and 1, 3-bis (aminomethyl) cyclohexane; and the component B is one or a combination of more of triton X-100, tween-20, lauryl sodium sulfate and sodium dodecyl benzene sulfonate. The method is used when the FFPE slice is subjected to fluorescence in-situ hybridization or immunofluorescence experiments, autofluorescence can be reduced in a rapid removal mode, the pretreatment effect is remarkably improved, and the hybridization efficiency of samples difficult to hybridize is improved.

The present invention relates to the technical field of pharmaceutical synthesis and development of drugs, and to a process for preparing cyclic 2-amino-1-one derivatives and to the reaction products and intermediates obtainable by this process. The present invention further relates to pharmaceutical compositions, in particular drugs or medicaments, comprising the cyclic 2-amino-1-one derivatives and to their use as medicaments, in particular in the prophylactic or therapeutic treatment of diseases of the human or animal body, preferably of neurodegenerative diseases or psychiatric disorders.

This invention discloses amine-based polyether polyols and their preparation methods, belonging to the field of chemical synthesis technology. The technical solution includes the following steps: S1, adding a cyclohexylamine compound to a reaction vessel, purging with nitrogen, evacuating, stirring, and heating to the reaction temperature, introducing epoxides into the reaction vessel, and carrying out a polymerization reaction. After the reaction, an intermediate product is obtained; S2, adding an alkanolamine compound and an alkali metal catalyst or an amine catalyst to the intermediate product obtained in step S1, evacuating, adding epoxides, and carrying out a polymerization reaction. After the reaction, the obtained product is post-treated to obtain the amine-based polyether polyol. This invention uses cyclohexylamine compounds as the main initiator, and alkanolamine initiators can be added. Under catalytic conditions, it undergoes a segmented polymerization reaction with epoxides. The prepared special amine-based polyether polyol has the characteristics of high functionality, strong resistance to yellowing, high activity, and good thermal insulation.

The invention relates to the technical field of tin alloy solder, and discloses a preformed soldering lug with high welding strength, which comprises a soldering flux layer and a soldering lug main body, the soldering flux layer comprises esterified rosin, methyl ester, succinic acid, glutaric acid, cyclohexylamine hydrochloride and isopropanol; the soldering lug main body comprises tin, antimony, silver, bismuth, copper and nickel; by adding silver, bismuth, copper, nickel and metal elements in the alloy into the soldering lug, the mechanical strength of the solder alloy can be improved, compared with common tin-copper alloy, the mechanical strength of the soldering lug is greatly improved, the soldering flux is high in activity but low in corrosivity, stable high-mechanical-strength intermediate layer alloy is formed, and the soldering flux can be applied to the field of soldering. The welding strength and the tensile strength are more excellent, the soldering flux layer and the soldering lug main body have the synergistic effect, so that a welded part has high tensile property after being welded, and the mechanical strength of the solder alloy can be improved by adding silver, bismuth, copper and nickel in the alloy into the soldering lug and metal elements.

The invention discloses an azide modified platinum radiotherapy sensitizer as well as a preparation method and application thereof. The azide modified platinum radiotherapy sensitizer is an azide modified platinum complex, comprises a cis platinum complex and a trans platinum complex, and is characterized in that the structure of the azide modified platinum radiotherapy sensitizer is shown in the specification; in the formula I, R1 is cyclohexylamine or 2-methylpyridine; in the formula II, R2 is ammonia molecules or pyridine. The azide modified platinum radiotherapy sensitizer can generate a platinum-nitrogen-bin free radical under the irradiation of X rays, and by utilizing a nitrogen transfer reaction in organic chemistry, the platinum-nitrogen-bin free radical generated after the compound is irradiated by rays can be covalently coupled with some DNA (Deoxyribose Nucleic Acid) or protein, so that the sensitivity of the radiotherapy sensitizer is improved. The radiotherapy sensitization effect in tumor radiotherapy is achieved by directly damaging DNA and hindering DNA repair.

The invention belongs to the technical field of compositions for treating wells, and particularly relates to a nano paraffin inhibitor. The nano paraffin inhibitor provided by the invention is prepared by the following method: carrying out ultrasonic reaction on fatty alcohol-polyoxyethylene ether (3) monoester disodium sulfosuccinate, dicyclohexylamine and nano aluminum oxide powder in a solvent, carrying out solid-liquid separation, and drying. The nano Al2O3 endows the nano paraffin inhibitor with extremely strong surface activity, can penetrate into paraffin in the early stage of paraffin precipitation formation, and is combined with wax crystals through chemical bonds to cause loose paraffin precipitation, and meanwhile, the nano paraffin inhibitor covers the pipe wall to change the surface property of the pipe wall, so that the surface is hydrophilic, the paraffin on the surface of the pipe wall is promoted to fall off, and the paraffin on the surface of the pipe wall is prevented from falling off. The paraffin inhibition performance is further enhanced; in addition, the S = O bond and the wax crystal can inhibit the growth of the wax crystal through the bonding effect, and the S = O bond and the steric effect of the six-membered ring have a synergistic effect, so that the molecular structure of the nano paraffin inhibitor has better scale inhibition performance.

The invention relates to the field of prepregs, in particular to a low-viscosity benzoxazine resin monomer, a preparation method of the low-viscosity benzoxazine resin monomer, a prepreg composition, a preparation method of the prepreg composition, a prepreg and a composite material. The compound amine compound comprises an amine compound and 4, 4 '-diaminodiphenyl methane, the molar ratio of amino groups of the amine compound to amino groups of the 4, 4'-diaminodiphenyl methane is (0.05-0.50): (0.95-0.50), and the amine compound comprises at least one of m-phenylenediamine, hexamethylenediamine, cyclohexanediamine, aniline, benzylamine, ethanolamine, aminophenol and cyclohexylamine. The low-viscosity benzoxazine resin with coexisting multi-molecular structures can be obtained, the prepared resin composition has the characteristics of low curing temperature, good film-forming property and high latency, the prepreg has accurate glue content control, and the composite material has the characteristics of strong mechanical property, good flame retardance, low product porosity and the like, and meets the aviation application requirements.

This invention provides a method for synthesizing N-cyclohexyl-2-benzothiazole, comprising the following steps: reacting cyclohexylamine and 2-halobenzothiazole in an alcohol solvent in the presence of a deacidifying agent at 60-80°C to generate N-cyclohexyl-2-benzothiazole. The method of this invention is simple to operate, uses readily available raw materials, does not use halogen-containing catalysts, has low pollution, and produces products with high purity and yield. It also avoids the use of DMSO as a solvent, thus solving the problem of difficult DMSO recovery and purification.

The application discloses a preparation method of an anode material for treating organic wastewater, and comprises the following steps: (1) dissolving silver nitrate, ammonia water, sodium hydroxide and formaldehyde in deionized water to obtain a precursor solution, then fixing a commercial electrode in the precursor solution, and performing heating and stirring treatment to obtain an Ag / commercial electrode sheet; (2) preparing a plating solution by using nickel salt, ethylenediamine, potassium borohydride and sodium hydroxide, then fixing the Ag / commercial electrode sheet obtained in the step (1) in the plating solution, and performing heating and stirring treatment, and then performing washing and drying to obtain the anode material. When the electrode material is used for electrocatalytic oxidation treatment of 3-aminomethyl-3, 5, 5-trimethylcyclohexylamine wastewater, the ammonia oxidation rate is higher, and the COD and NH4-N values of the organic wastewater can be effectively reduced. The application further discloses the anode material obtained by the preparation method and application thereof.

The invention discloses a synthesis method of cis-4-methoxy cyclohexylamine hydrochloride, and belongs to the technical field of organic chemistry. The synthesis method comprises the following steps: 1, introducing air to react N-(benzyloxycarbonyl) hydroxylamine and 1, 3-cyclohexadiene under the catalysis of copper tetraphenylporphyrin to generate a compound I; 2, generating a compound II from the compound I and sodium methoxide under the action of boric acid ester; and 3, carrying out catalytic hydrogenation on the compound II, and reacting with hydrogen chloride to obtain the cis-4-methoxy cyclohexylamine hydrochloride. The method is simple to operate, and dangerous hydrogenation reaction conditions under high temperature and high pressure for reducing benzene rings are avoided; under the mediation of boric acid ester, the regioselectivity and stereoselectivity of the ring-opening reaction of sodium methoxide and a compound I are controlled to obtain a compound II with a cis-structure, and the compound II is subjected to catalytic hydrogenation and acidification salification to obtain a high-purity cis-stereoconfiguration product, so that a new path is provided for synthesis of cis-4-methoxy cyclohexylamine hydrochloride.

The present application relates to a kind of preparation methods of 3-aminomethyl-3,5,5-trimethylcyclohexylamine, the preparation method described includes: first isophorone nitrile and liquid ammonia occur imination reaction in the presence of imination catalyst, the obtained imination reaction liquid is mixed with methanol and then enters hydrogenation reactor, and hydrogenation reaction occurs in the presence of hydrogenation catalyst to obtain 3-aminomethyl-3,5,5-trimethylcyclohexylamine.Using the method provided in the present application, relatively low reaction pressure can be used to obtain a reaction solution with a lower content of difficult-to-separate impurities, which reduces the difficulty of separation and reduces the difficulty of separation.In addition, the mixing heat of methanol and liquid ammonia can be used for hydrogenation preheating, reducing energy waste, in line with the current low-carbon development trend, further reducing the operating cost of the device.

The invention relates to the technical field of hydrogen energy preparation and impurity removal, in particular to high-alkali-resistance ion exchange resin for hydrogen energy preparation and impurity removal, which is prepared from the following raw materials: styrene, divinylbenzene, a pore-foaming agent, an initiator, an inorganic modifier, chloromethyl ether, an amination reagent and a polymerization inhibitor. The inorganic modifier is SiO2 (silicon dioxide) nano particles or TiO2 (titanium dioxide) nano particles modified by gamma-aminopropyl triethoxy silane; the amination reagent is N, N-dimethyl cyclohexylamine. Through an inorganic and organic synergistic modification strategy and optimized selection of an amination reagent with better alkali resistance, activity attenuation and structural deterioration of functional groups of the resin in a high-alkali environment are effectively inhibited, capacity loss of the resin in long-term operation is remarkably reduced, the service life of the resin is greatly prolonged, and the service life of the resin is prolonged. The long-term operation requirement of a high-alkali working condition in a hydrogen energy preparation process can be fully met, the resin replacement frequency is reduced, and the process operation cost is reduced.

The application discloses a preparation method of dicyclohexylamine. The dicyclohexylamine is prepared by hydrogenation reaction of raw material aniline and hydrogen, wherein the raw material aniline and / or the hydrogen contains ammonia and cyclohexane derivatives. The method can reduce the content of by-products such as biphenyl, bicyclohexane and phenylcyclohexane in the reaction process, thereby reducing the separation difficulty and obtaining a high-purity DCHA product.

The invention discloses a heterogeneous catalyst and a preparation method and application thereof in preparation of cyclohexylamine through phenol reductive ammoniation, the heterogeneous catalyst comprises a carrier and active metal loaded on the carrier, the supported non-noble metal catalyst is used for catalyzing preparation of cyclohexylamine through phenol reductive ammoniation, the conversion rate of phenol is 100%, and the conversion rate of cyclohexylamine is 100%. The selectivity of cyclohexylamine is as high as 95%, and no obvious inactivation phenomenon is generated after the catalyst is used for five times.

The application discloses a kind of based on chelating phosphine ligand Binuclear cuprous cluster luminescent material and its preparation method, and the sensing application of the material to pyridine and cyclohexylamine VOC;The luminescent material structural formula of the application is (Xantphos) Cu2I2 (4-PBO) 2, wherein Xantphos is electric neutral double phosphine ligand 4,5-bis (diphenylphosphine) -9,9-dimethyl xanthene, and 4-PBO is nitrogen-containing ligand 4- (2-benzoxazole) pyridine;It is prepared by coordination reaction of CuI and ligand by mechanical ball milling;The luminescent intensity of material itself is strong, and can be used as luminescent material;And after the material is placed in pyridine or cyclohexylamine atmosphere, different fluorescence sensing response characteristics of fluorescence enhancement and discoloration and fluorescence quenching are presented soon respectively;The material is easy to prepare, and solubility and stability are very good, and it is also easy to prepare into paper-based load or polymer-doped fluorescent sensing film, and the film also shows the fluorescence sensing performance of quick and selective response and sensitive identification.

This invention discloses a method for preparing a waterborne non-isocyanate polyurethane coating, comprising the following steps: (1) Preparation of waterborne cyclic carbonate resin: adding polycyclic carbonate to an organic solvent, then adding aminosulfonic acid and reacting at 45-55°C, adding N,N-dimethylcyclohexylamine for neutralization, and continuing the reaction at 120-150°C to obtain a waterborne cyclic carbonate resin, then adding water for dispersion to obtain a waterborne cyclic carbonate emulsion; (2) Preparation of waterborne non-isocyanate polyurethane coating: stirring the waterborne cyclic carbonate emulsion, polyamine curing agent, and defoamer at 20-30°C until uniform, spraying to form a film, baking and curing to obtain a non-isocyanate polyurethane coating. This invention also discloses the waterborne non-isocyanate polyurethane coating obtained by the above preparation method. The waterborne non-isocyanate polyurethane coating of this invention is easy to waterborne, has a low synthesis reaction temperature, and has the advantages of safety, environmental protection, and energy saving.

Disclosed are a sulfonic acid-modified polyisocyanate and a preparation method thereof. By controlling a content of cyclohexylamine component in the raw material, the reaction rate of sulfamic acid and polyisocyanate is accelerated, so that the prepared product has advantages of light color and low turbidity as well as good storage stability.

This invention relates to the field of chemical waste gas resource utilization and environmental protection technology, specifically disclosing a cyclohexylamine hydrogen-containing waste gas recovery and reuse treatment system. It includes pretreatment, separation and purification, regeneration, closed-loop control, and recycling units connected in series, forming a closed loop through corrosion-resistant and heat-insulated pipelines. The pretreatment unit uses a composite absorbent to deeply remove impurities such as ammonia and organic amines from the waste gas; the separation and purification unit uses a composite membrane, functionalized adsorption tower, and PSA module for gradient hydrogen separation; the regeneration unit realizes the recycling of the composite absorbent; the closed-loop control unit adjusts parameters in a coordinated manner; and the recycling unit reuses high-purity hydrogen for production. This invention achieves thorough impurity removal, high hydrogen purity, high recovery rate, recyclable absorbent, and low energy consumption, effectively solving the technical problems of incomplete hydrogen-amine separation, easy adsorbent poisoning and deactivation, and insufficient hydrogen purity in traditional technologies, thus realizing waste gas resource utilization and green production.

The application discloses MCM-22 molecular sieve, a preparation method and application thereof. The application adopts a small amount of N,N,N-trimethyladamantylammonium and cyclohexylamine dual organic structure directing agents in a hydrothermal synthesis system, and synthesizes MCM-22 molecular sieve through one-step crystallization and calcination. The method can directly synthesize MCM-22 molecular sieve without adding seeds and without temperature change crystallization operation, and the yield of the MCM-22 molecular sieve prepared after calcination is high. The content of non-framework aluminum in the MCM-22 molecular sieve prepared by the preparation method is less than 5% of the total aluminum content, the content of aluminum located at the half-supercage T2 site of the framework is higher than 10% of the total aluminum content, and the MCM-22 molecular sieve has good performance when used as a catalyst for a liquid phase alkylation reaction of benzene and ethylene to prepare alkylbenzene.

The present invention provides a process for producing methylenebis(cyclohexylamine), comprising the steps of 1) catalytically hydrogenating MDA, 2) removing the catalyst and 3) subsequently distilling the product of the hydrogenation, in which at least one dividing-wall column is used in step 3). Exposure to high temperature and residence time of the product is reduced and problems due to crystallization do not occur. The methylenebis(cyclohexylamine) isomer ratio also may remain largely constant during the distillation.

The application provides a preparation method of cyclohexylamine and dicyclohexylamine, and a control method of dicyclohexylamine yield in cyclohexylamine and dicyclohexylamine reaction, which comprises: carrying out hydrogenation reaction of aniline and hydrogen in the presence of a catalyst to prepare cyclohexylamine and dicyclohexylamine, wherein the raw material also contains water, and the content of water is 0.1wt%-3.0wt% of the mass of aniline; the yield of cyclohexylamine and dicyclohexylamine is adjusted by adjusting the water content, and the flexibility and market competitiveness of the production device are improved.

The present application relates to a kind of nickel catalyst, preparation method.The nickel catalyst includes the structure formed by the chemical bond effect of metal-based active center and formate ligand, the metal-based active center is nickel, formate is combined with nickel with bidentate coordination structure;The nickel catalyst of the present application has higher cyclohexylamine yield, when realizing the conversion rate of 100% of cyclohexanone, the yield of product cyclohexylamine can be up to 96.45% at most;Preparation method is simple, catalyst preparation process is simple, easy to operate, and various aids do not need to be added in catalytic process, reduce the complexity of reaction system, it is favorable to the purification of product, suitable for industrial application.

The application provides a refining method of cyclohexylamine and a preparation method of cyclohexylamine, the refining method of cyclohexylamine is that a reaction liquid containing cyclohexylamine is removed of light components and then is introduced into a refining tower for refining, carbon dioxide is introduced into the refining tower, and the preparation method of cyclohexylamine is characterized in that the method comprises the following steps: a PS1 activation step, in which a catalyst is activated by using hydrogen containing a small amount of water; a PS2 reaction step, in which after the activation is completed, raw material aniline and hydrogen are mixed and preheated, and then are introduced into a reactor for hydrogenation reaction to obtain a cyclohexylamine reaction liquid; and a PS3 reaction step, in which the refining method is used for refining. The catalyst is activated by using hydrogen containing a small amount of water, so that the activity of the catalyst can be significantly improved, and the yield of cyclohexylamine is high; in the product refining process, a small amount of carbon dioxide is introduced into the bottom of the refining tower, so that N-cyclohexylidene cyclohexylamine impurities can be effectively removed, and the purity of the product is high.

The application discloses a synthesis method of 3-aminomethyl-3,5,5-trimethylcyclohexylamine. The method comprises the following steps: 1) taking 3-cyano-3,5,5-trimethylcyclohexylimine and hydrogen as raw materials, and performing imine hydrogenation reaction in a solvent in the presence of a first catalyst and a first cocatalyst to obtain 3-cyano-3,5,5-trimethylcyclohexylamine; 2) taking 3-cyano-3,5,5-trimethylcyclohexylamine and hydrogen as raw materials, and performing cyano hydrogenation reaction in an organic solvent in the presence of a second catalyst and a second cocatalyst to obtain a target product; the first catalyst contains one or both of nickel and cobalt; the first cocatalyst is a substance capable of reacting with hydrogen cyanide; the second catalyst contains iron; and the second cocatalyst is a Lewis acid catalyst. The synthesis method can obviously improve the yield and purity of the target product, the catalyst is more stable, the cost is lower, and the synthesis method is more environmentally friendly.