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Nano-size layered double hydroxide and step-by-step precipitation preparation method thereof
InactiveCN103159238ARich sourcesLow costMaterial nanotechnologyTitanium compoundsPhysical chemistryAdsorption separation
The invention provides a nano-size layered double hydroxide and a step-by-step precipitation preparation method thereof. The preparation method comprises the following steps: based on a soluble salt of a metal and an alkali as raw materials, respectively precipitating metal ions constituting an LDH (layered double hydroxide) layer plate through step-by-step precipitation reaction and generating the LDH during the second-step precipitation process. As the activity of the hydroxide prepared by the first-step precipitation reaction is high, the LDH can fast nucleate and grow during the second-step precipitation, an obtained LDH sheet is thinner, the thickness of the layer plate is 5-15nm, the length of the layer plate is 50-150nm, and the specific surface area of a BET (Brunauer-Emmett-Teller) is 140-280m<2> / g, which is much larger than the specific surface area of the common LDH. By adopting the method, the shortcoming of small specific surface area during the preparation of the LDH through a co-precipitation method can be overcome. The preparation method adopted by the invention is simple and convenient, high temperature and high pressure are not required, special equipment is not required, sources of the raw materials are rich, and the cost is low. The layered double hydroxide can be widely applied to the fields of adsorption separation, catalysis, high polymer materials and the like.
Owner:BEIJING UNIV OF CHEM TECH
Flaky structure layered composite hydroxide and preparation method thereof
The present invention provides a flaky structure layered composite hydroxide and a preparation method thereof. According to the preparation method, a metal hydroxide, an oxide, a basic carbonate, a metal soluble salt and an alkali are adopted as raw materials, the addition speed of the alkali solution is controlled to prepare the flaky LDH, and the space confinement effect of the metal hydroxide, the oxide or the basic carbonate exists, such that the produced LDH flakes do not easily aggregate so as to finally obtain the LDH with a large specific surface, wherein the BET specific surface area is 130-200 m<2> / g and is much larger than the specific surface area of the ordinary LDH. According to the invention, the preparation method has characteristics of simpleness, no requirement of high temperature, high pressure and special equipment, rich raw material source and low cost; and the flaky structure layered composite hydroxide can be widely used in the fields of absorption separation, catalysis, polymer materials and the like.
Owner:BEIJING UNIV OF CHEM TECH
Gold nanocluster-gold nanoparticle-titanium dioxide compound photocatalyst and application thereof
InactiveCN105214656APhotocatalytic activity regulationControl the degree of in situ conversionCatalyst activation/preparationHydrogen productionNanoparticlePhysical chemistry
The invention discloses a gold nanocluster-gold nanoparticle-titanium dioxide compound photocatalyst and application thereof. The gold nanocluster-gold nanoparticle-titanium dioxide compound photocatalyst having different particle sizes is firstly obtained by preparing a gold nanocluster solution based on chloroauric acid and a reducing type glutathione as raw materials and carrying out an impregnation method and illumination condition control on gold nanocluster solution and titanium dioxide nanoparticles. The gold nanocluster-gold nanoparticle-titanium dioxide compound photocatalyst is simple in preparation method without high temperature and high pressure conditions; compared with the existing gold nanocluster-titanium dioxide and gold nanoparticle-titanium dioxide catalysts, the gold nanocluster-gold nanoparticle-titanium dioxide compound photocatalyst disclosed by the invention is higher in photocatalytic efficiency and hydrogen production efficiency, can be used for hydrogen production by photolysis of water, and is beneficial to sustainable development of environments and energy sources.
Owner:FUZHOU UNIV
Three-dimensional flower-like layered double hydroxide and preparation method thereof
InactiveCN103274437AThree-dimensional flower-like structureEasy to prepareZinc oxides/hydroxidesNickel oxides/hydroxidesAluminium hydroxideHigh pressure
The invention provides a three-dimensional flower-like layered double hydroxide and a preparation method thereof. In the preparation of the three-dimensional flower-like layered double hydroxide, aluminum sulfate or aluminum ammonium sulfate, soluble divalent metal salt and alkali are used as raw materials; the characteristic that sphere-like micron-sized aluminium hydroxide particles can be rapidly formed by solution of aluminum sulfate and aluminum ammonium sulfate, of which the pH value is 3.7 to 4, under a temperature of 95 to 100 DEG C is utilized; after being prepared, the micron-sized particles react with the divalent metal salt and the alkali, so that a great amount of LDH (Layered Double Hydroxide) crystal nuclei can be rapidly formed on the surface of aluminium hydroxide; and finally, three-dimensional flower-like structure LDH are formed. A prepared LDH laminate has a thickness of about 10 to 20nm; and the BET (Brunauer-Emmett-Teller) specific surface area of the prepared LDH laminate is greater than 140 m<2> / g and is much greater than that of common LDH. The preparation method disclosed by the invention is simple, is simple and convenient to operate, does not require high temperature and high pressure, does not need to use an organic solvent and a surfactant and is low in cost. The three-dimensional flower-like layered double hydroxide can be widely applied to the fields of adsorption separation, catalysis, high polymer materials and the like.
Owner:BEIJING UNIV OF CHEM TECH
Synthesis process of vecuronium bromide
The invention discloses a synthesis process of vecuronium bromide. The synthesis process comprises the following steps: generating epiandrosterone sulfonyl ester (III) by carrying out esterification reaction between epiandrosterone (II) and paratoluensulfonylchloride; generating 5Alpha-androst-2-alkene-17-ketone (IV) by carrying out elimination and dehydration reaction between the (III) and 2,6-lutidines; generating 17-acetoxyl-5Alpha-androstane-2,16-diene (V) by carrying out enolization and esterification reaction between the (IV) and isopropenyl acetate; generating (2Alpha, 3Alpha, 16Alpha,17Alpha)-diepoxy-17Beta-acetyl-5Alpha-androstane (VI) by epoxy reaction of the (V) under the effect of hydrogen peroxide; generating 2Beta, 16Beta-di(1-piperidyl)-5Alpha-androstane-3Alpha-hydroxyl-17-ketone (VII) by ring-opening and addition reaction of the (VI) under the effect of hexahydropyridine; generating 2Beta, 16Beta-di(1-piperidyl)-5Alpha-androstane-3Alpha,17Beta-diol (VIII) by the (VII)under the reduction of potassium borohydride; generating 2Beta, 16Beta-di(1-piperidyl)-3Alpha, 17Beta- acetoxyl-5Alpha-androstane (IX) by carrying out esterification reaction of the (VIII) under the acetylation of acetic anhydride; and generating vecuronium bromide (I) by carrying out quaternary ammonium salt reaction between the (IX) and bromomethane. The invention has the advantages of low cost,less pollution and high yield.
Owner:XUZHOU NORMAL UNIVERSITY
Hydrophobic high-elasticity methylsilsesquioxane aerogel block and preparation method thereof
The invention discloses a hydrophobic high-elasticity methylsilsesquioxane aerogel block and a preparation method thereof. The aerogel block is a compound with methyltrimethoxysilane and dimethoxydimethylsilane as a co-precursor, a hydrochloric acid solution HCl as a solvent and a catalyst and cetyltrimethylammonium chloride as a dispersant. The preparation method includes the following steps: adding cetyltrimethylammonium chloride into the hydrochloric acid solution, then adding the precursor, carrying out magnetic stirring under a closed condition, adding a gel accelerator, then stirring again, placing in a drying oven, gelling and aging; carrying out solvent replacement of the gel formed in the step 1) with isopropanol for at least two times, to obtain a gel after solvent replacement; and placing the gel after solvent replacement in a drying oven, and drying to obtain the complete hydrophobic high-elasticity methylsilsesquioxane aerogel block. Through the way, the methylsilsesquioxane aerogel block with good hydrophobicity and high elasticity can be obtained under the condition of ambient pressure drying.
Owner:PAN ASIAN MICROVENT TECH JIANGSU CORP
Preparation method of polydopamine nano-zinc oxide superhydrophobic coating
ActiveCN107312446ASimple preparation processRaw materials are easy to getAntifouling/underwater paintsPaints with biocidesWater bathsZno nanoparticles
The invention discloses a preparation method of a polydopamine nano-zinc oxide superhydrophobic coating. The preparation method comprises the following steps: coating the surface of a matrix with polydopamine; (2) depositing a layer of nano-zinc oxide through a water bath precipitation method and a hydrothermal method; (3) then putting the matrix into a dodecanethiol ethanol solution for surface modification, so as to prepare the coating with relatively high superhydrophobic property. The preparation method disclosed by the invention is simple and feasible; reaction conditions are mild; a requirement of equipment is low; large-scale production can be realized, and the preparation method has extremely high popularization and application value. The prepared superhydrophobic coatin has a static contact angle of 160 degrees or above and a rolling angle of 5 degrees or below.
Owner:NANCHANG HANGKONG UNIVERSITY
Long-carbon-chain semi-aromatic nylon PA14T and preparation method thereof
ActiveCN104327265AImprove toughnessEasy to processOrganic compound preparationAmino compound preparationPolymer scienceAutomotive industry
The invention relates to a long-carbon-chain semi-aromatic nylon PA14T and a preparation method thereof, belonging to the field of high polymer material synthetic technologies. The repeat unit is shown in the specification, and the degree of polymerization of the long-carbon-chain semi-aromatic nylon PA14T is n which is equal to 2 to 200. The preparation method comprises the following steps: (1) preparing nylon PA14T salt: adding 1,4-terephthalic acid and 1,14-tetradecanedioic diamine into water to perform salt forming reaction; (2) preparing semi-aromatic nylon PA14T: adding the nylon PA14T salt obtained in step (1) and a solvent into a polymerizer, heating up a reaction still to be at 200-240 DEG C under a condition of shielding gas, reacting for 1-4 hours under the pressure of 1.2 to 3 MPa, deflating until normal pressure is achieved and vacuumizing, and then carrying out polymerization reaction to obtain the semi-aromatic nylon PA14T. The PA14T is excellent in performance and is easy to process and form, and has the good market prospect, especially in electronic and electrical, automotive industries and the like; and besides, the long-carbon-chain semi-aromatic nylon PA14T is simple in technology, moderate in reaction condition, short in reaction time and low in energy consumption.
Owner:HENAN JUNHENG IND GRP BIOTECH CO LTD
Method for preparing 2-cyano-3-amino acrylic ester derivates
ActiveCN101417962AHigh purityHigh yieldCarboxylic acid nitrile preparationOrganic compound preparationOrganic solventFatty alcohol
The invention discloses a method for preparing a 2-cyano-3-amino acrylic ester derivative, which comprises the following steps: a compound (I) is taken as a raw material and reacts with C1 to C6 of fatty alcohols in an organic solvent in the presence of dry chlorine hydride to generate hydrochloride (II) of iminoether; and the obtained hydrochloride (II) of the iminoether or the filtered hydrochloride (II) of the iminoether reacts with cyanoacetate in the organic solvent in the presence of alkali to obtain the 2-cyano-3-amino acrylic ester derivative (III). The method for preparing the 2-cyano-3-amino acrylic ester derivative simplifies production process and has less three wastes; and the obtained product has high purity and high yield.
Owner:JIANGSU PESTICIDE RES INST
Environment-friendly silk degumming method
InactiveCN107268092AQuality improvementImprove the lubrication effectDe-gumming silkAlkaline proteaseWax
The invention mainly relates to the technical field of silk processing, and discloses an environment-friendly silk degumming method, which includes immersion, enzymolysis, fermentation and washing. The method is simple, conditions are mild, high temperature and high pressure are not needed, energy is saved, the method is suitable for batch processing, the degumming rate can reach 89.3 percent, obtain silk is fine and smooth, the color is bright and white-yellow, and economic income can be increased by 12.7 percent. pH of immersed silk is regulated to be alkaline, lipase is added to decompose grease and wax components in the silk, high-temperature cooking is avoided, so that energy is saved, pH is then regulated to be acidic, bromelain is added, and enzymic preparations with different pHs are sequentially used for enzymolysis. The conventional joint use of alkaline protease and surfactant is changed, the environment is protected, soluble impurities under different pHs are sufficiently removed, sericin and remaining fat are decomposed, and the silk degumming rate is increased.
Owner:HEFEI JUFENG THROWING
Process for realizing natural gas preparation with coke oven gas by using anaerobic microbes
InactiveCN103087793ANo need to addNo need for high temperature and high pressureChemical industryGaseous fuelsCo2 storageAnaerobic reactor
The invention discloses a process for realizing natural gas preparation with coke oven gas by using anaerobic microbes. The process comprises the steps that: a, coke oven gas in a coking furnace and CO2 gas in a CO2 storage tank are mixed, such that mixed gas is obtained; b, the mixed gas is delivered into an anaerobic reactor with high-activity anaerobic microbes; in the anaerobic reactor, CO2, H2 and CO in the original coke oven gas are utilized, and CH4 is produced; H2S in the original coke oven gas is produced into elemental S through sulfur bacteria in the high-activity anaerobic microbes; and c, N2 and other impurities are separated with a pressure-swing adsorption separation device or a cryogenic separation device, such that natural gas with high methane content is obtained. According to the invention, with a microbial process, CO2 is supplemented, and natural gas is prepared. The process is highly economical. With the process, catalyst is not needed, and high-temperature and high-pressure are not needed. Most components except methane in the coke oven gas can be converted into methane, such that CO2 emission is reduced, and effects of energy saving and environment protection are achieved.
Owner:SHANGHAI BAIWOSI WATER TREATMENT TECH
Method for electric field assisted preparation of one-dimensional nanometer ZnO crystal whisker
InactiveCN103320867ASimple processSimple production equipmentPolycrystalline material growthSingle crystal growth detailsInorganic saltsHexamethylenetetramine
The present invention relates to a method for electric field assisted preparation of one-dimensional nanometer ZnO crystal whisker, wherein main raw materials comprise zinc nitrate and hexamethylenetetramine. The process mainly comprises the following three steps: 1, preparing a precursor solution, 2, carrying out electric field orientation ZnO crystal whisker growth, and 3, carrying out a crystal whisker heat treatment. The method is characterized in that a low price inorganic salt is adopted as a raw material, and an external electric field is applied based on a solution method to achieve high aspect ratio ZnO crystal whisker preparation. With the method, a hexagonal wurtzite ZnO crystal whisker with a high aspect ratio of up to 100 can be prepared, and an aspect ratio of the crystal whisker can be controlled in a certain range through change of the external electric field. According to the present invention, the method has characteristics of simple preparation process and low production cost, and the prepared ZnO crystal has characteristics of controllable diameter and controllable length.
Owner:WUHAN UNIV OF TECH
Method for preparing amine-terminated polyether by leaving group method
ActiveCN103087308AGood reaction selectivityIncrease contentCarbamic acid derivatives preparationOrganic compound preparationCarbamatePtru catalyst
Owner:山西省建筑科学研究院集团有限公司
Folic acid functionalized drug-loaded mesoporous silica and preparation method thereof
InactiveCN102805869ALow priceReduce manufacturing costSilicaPharmaceutical non-active ingredientsMesoporous silicaAmino functionalized
The invention discloses folic acid-functionalized drug-loaded mesoporous silica and a preparation method thereof. The folic acid-functionalized drug-loaded mesoporous silica of the present invention is prepared according to the following steps: 1) adopting orthosilicate as a silicon source, adopting an n-hexadecyl quaternary ammonium salt as a template agent, adopting mercaptopropyl trimethoxysilane as a functionalization reagent, and adopting a method of copolycondensation, synthesis and grafting to prepare thiol-functionalized mesoporous silica; 2) carrying out a reaction of the thiol-functionalized mesoporous silica and 2-(pyridindithio)ethyl ammonium chloride to obtain amino-functionalized mesoporous silica adopting a disulfide bond as a linker; 3) adopting a physical adsorption method to assemble a drug into pore channels of the mesoporous silica; and 4) linking folic acid to the mesoporous silica through the disulfide bond with a covalence effect to obtain the folic acid-functionalized drug-loaded mesoporous silica. The product of the present invention has characteristics of folic acid targeting effect, large specific surface area, high thermal stability, no toxicity, high drug loading rate, and effective prevention from drug leakage.
Owner:CAPITAL UNIVERSITY OF MEDICAL SCIENCES
Quaternary ammonium salt modified diamine-terminated polydimethylsiloxane emulsion and preparation method and application thereof
The invention belongs to the technical field of organosilicone and discloses a quaternary ammonium salt modified diamine-terminated polydimethylsiloxane emulsion and a preparation method and an application thereof. The emulsion provided by the invention comprises the following components which are obtained by performing a reaction in water in parts by mass: 100 parts of diamine-terminated polydimethylsiloxane, 0.5-100 parts of quaternary ammonium salt with epoxy groups and 10-300 parts of a nonionic emulsifier. The quaternary ammonium salt modified diamine-terminated polydimethylsiloxane emulsion provided by the invention is prepared in an emulsifying system, so that the problem that the reaction rate is low as materials are not dissolved by one another is solved, and no organic solvents are needed, and the emulsion is high in flexibility and high in practicality; a quaternary ammonium salt functional group is introduced into the molecular framework thereof, so that the product performance of diamine-terminated polydimethylsiloxane is further improved, the stability is good and the anti-yellowing ability is strong. The quaternary ammonium salt modified diamine-terminated polydimethylsiloxane emulsion provided by the invention is simple and feasible in production process, short in production period, free of strict requirements on production equipment, and easily available in raw material, can easily realize industrial production, and provides a conditioning aid which is unique in performance for daily use chemicals and textile industries.
Owner:SOUTH CHINA INST OF COLLABORATIVE INNOVATION
Treatment method of sulfide in basic residue sewage
InactiveCN106587322AImprove biodegradabilityHigh catalytic activityWater/sewage treatment by oxidationCatalytic oxidationTherapeutic effect
The invention relates to the field of sewage treatment, and discloses a treatment method of sulfide in basic residue sewage. The method comprises the steps that in the presence of a catalyst and an oxidant, catalytic oxidation is conducted on sulfide in the basic residue sewage, and the catalyst contains a titanium-silicon molecular sieve. According to the treatment method of sulfide in the basic residue sewage, the titanium-silicon molecular sieve serves as the catalyst, the reaction condition is mild, and high temperature and high pressure are not needed; the operation process is simple and easy to control, and the repeatability is good; no special production equipment requirement is needed, and industrialization is promoted; the oxidant is high in utilization rate, good in treatment effect and capable of greatly improving biodegradability of the basic residue sewage; the catalyst is stable and is not volatilized and degraded and is environmentally friendly; the catalyst is high in catalytic activity, long in service life and capable of being regenerated and recycled. The method is low in treatment cost and can be widely applied to treatment of the basic residue sewage.
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for efficiently removing fluorine ions in manganese sulfate solution
InactiveCN108118152AWith physical adsorptionEasy to separateProcess efficiency improvementIon contentSulfate
The invention provides a method for efficiently removing fluorine ions in a manganese sulfate solution. The method is characterized in that a certain quantity of to-be-processed manganese sulfate solution is added into reaction equipment, the content of the fluorine ions in the solution is measured, solid cerium hydroxide with a certain fluorine ion content proportion is added under the conditionsthat the temperature is 30-50 DEG C and the pH value is 2-6, the material is stirred for 8-12 h at the rotational speed of 150-350 r / min, then stirring is stopped, the material is left to stand for 12-18 h and then transferred into filtering equipment for filtration, the filtrate is a fluorine-removed qualified manganese sulfate solution, filter cake is added into reverse osmosis water at a solid-liquid mass ratio of 1:(1-6), stirring and washing are performed for 0.5 h, and filtering is performed to obtain fluorine-containing cerium hydroxide which is then fed into a regeneration procedure.According to the method, lots of residual fluorine ions in a manganese sulfate solution system can be removed, the content of a fluoride in the processed solution can be reduced to 100 ppm or below, and the fluorine removal agent cerium hydroxide can be recycled after being regenerated, so that the production cost is greatly lowered.
Owner:GUANGDONG GUANGHUA SCI TECH
Method for segment pretreatment on straws through ammonia water and hydrogen peroxide
InactiveCN105838608AIncrease profitEasy for industrial useMicroorganismsWaste based fuelHigh pressureHigh heat
The invention discloses a method for segment pretreatment on straws through ammonia water and hydrogen peroxide. The method utilizes straws as raw materials and comprises ammonia water and water addition, sealing, uniform blending, standing, hydrogen peroxide addition, sealing, uniform blending and standing. Through segment pretreatment with ammonia water and hydrogen peroxide, a microbial growth inhibitor produced by ammonia water pretreatment is effectively reduced, a reagent price is low, an addition amount is less, safety and environmental friendliness are obtained, pretreatment conditions are mild, a high temperature and high pressure are avoided, equipment requirements are low and energy consumption is low. After enzymatic hydrolysis of straw products pretreated through the method for 15h, a DNS test result shows that a reducing sugar yield is 0.523g / g straw. The method can be simply operated, has mild conditions, has high efficiency and is suitable for industrial large-scale treatment.
Owner:HUAZHONG AGRI UNIV
Method for preparing lenalidomide
InactiveCN102838586AEasy to manufactureEfficient preparationOrganic chemistryChemical synthesisMethyl benzoate
The invention relates to the field of chemical synthesis, and discloses a method for preparing lenalidomide, which comprises the following steps: condensing 3-aminopiperidyl-2,6-diketohydrochloride with 2-halomethyl-3-nitro-methyl benzoate under weakly alkaline conditions, cooling the reaction solution to room temperature, adding into water, stirring, filtering to obtain a filter cake, sequentially washing with water and alcohol reagents, and drying to obtain 3-(7-nitro-3-oxo-1H-isoindazolyl-2-yl)piperidyl-2,6-dione; and carrying out nitro-amino reduction reaction, filtering the reaction solution, concentrating, crystallizing at -20 DEG C to room temperature, filtering, washing the filter cake with alcohol reagents, drying to obtain a lenalidomide crude product, and recrystallizing to obtain the lenalidomide finished product. By adjusting the after-treatment technique, the invention enhances the total yield of lenalidomide, and ensures the high purity; and the whole method has the advantages of mild reaction conditions and no high temperature or high pressure, and can be used for preparing lenalidomide in a simple and efficient way. 2-halomethyl-3-nitro-methyl benzoate.
Owner:CHONGQING TAIHAO PHARM CO LTD
Fluoride-free super-hydrophobic coating and preparation method thereof
ActiveCN106833251ASimple preparation processRaw materials are easy to getPolyurea/polyurethane coatingsPolyester coatingsSide chainRoom temperature
The invention relates to a fluoride-free super-hydrophobic coating. The fluoride-free super-hydrophobic coating contains the following components by weight percent: 5%-50% of a long side chain polyacrylate segmented copolymer, 5%-50% of a nanometer or micron material and 0-90% of resin, wherein the long side chain polyacrylate segmented copolymer is prepared from long side chain polyacrylate monomers and functional acrylate monomers through polymerization. The invention further relates to a preparation method of the fluoride-free super-hydrophobic coating. The fluoride-free super-hydrophobic coating has the beneficial effects that a preparation method of the coating is simple, high temperature and pressure are not required, and the raw materials are easily available; by utilizing fluoride-free acrylate monomers, the environmental pollution is relatively low, and the cost is relatively low; and the coating can be sprayed to a substrate and is applicable to various clean substrates, and a solvent volatilizes at room temperature, so that the substrates have the super-hydrophobic property, and the mechanical performance of the coating is relatively good.
Owner:CHANGZHOU UNIV
Method for synthesizing corrosion and scale inhibitor S-carboxyalkylthiosuccinic acid by adopting one-step method
InactiveCN102993071AReadily biodegradableReduce manufacturing costScale removal and water softeningSulfide preparationMaleic anhydrideFilter cake
The invention relates to a method for synthesizing a corrosion and scale inhibitor S-carboxyalkylthiosuccinic acid by adopting a one-step method, and belongs to the field of industrial recycling cooling water treatment. The method comprises the following steps of: adding a certain amount of maleic anhydride and distilled water into a flask and preheating the flask in a constant-temperature oil-bathing pan to 70 DEG C till the maleic anhydride is completely dissolved; adding a certain amount of 3-thiohydracrylic acid to the flask so that the 3-thiohydracrylic acid and the maleic anhydride solution are completely mixed and dissolved, and then adding a little amount of D101 alkali resin to the mixed solution; and heating the mixed solution to 125 DEG C, heating and refluxing for 3.5h, carrying out suction filtering while the mixed solution is hot, putting the filtrate into a refrigerator and cooling the filtrate to 4 DEG C to recrystalize, carrying out suction filtering again to obtain filtrate which does not contain volatile substances and can be recycled and reused, collecting filter cakes, putting the filter cakes into a freezer dryer and drying for 48 hours to obtain white powder, namely the corrosion and scale inhibitor. The one-step method synthesis method disclosed by the invention is free of high temperature and high pressure, simple and convenient to operate and capable of effectively avoiding potential safety hazards and environmental pollution in the production process.
Owner:CHANGZHOU UNIV
Inclusion compound of cannabidiol with cucurbituril and derivatives of cucurbituril, and preparation method for inclusion compound
ActiveCN110935032AMild reaction conditionsNo need for high temperature and high pressureNervous disorderHydroxy compound active ingredientsFreeze-dryingCucurbituril
The invention discloses an inclusion compound of cannabidiol with cucurbituril and derivatives of the cucurbituril, and a preparation method for the inclusion compound. The cucurbituril and the derivatives thereof are cucurbituril [7] and derivatives thereof. The inclusion compound is prepared by adopting a solvent method. The inclusion compound prepared from the cannabidiol with the cucurbituriland the derivatives of the cucurbituril has good water solubility, stability and bioavailability. The preparation method comprises the following steps: adding cannabidiol crystals or a cannabidiol suspension into a solution of the cucurbituril and derivatives of the cucurbituril, carrying out a reaction under proper conditions, carrying out filtering, and carrying out freeze drying or vacuum drying so as to obtain the inclusion compound. The preparation method provided by the invention has the advantages of simple equipment, mild reaction conditions and easiness in industrial production, and can solve the problem that application of the cannabidiol in the fields of medicines, foods, cosmetics and the like is limited due to extremely low solubility of the cannabidiol in water.
Owner:云南省农业科学院经济作物研究所
Environment-protecting energy-saving oil pressure power machine
InactiveCN1670383ANo emissionsNo need for high temperature and high pressureTelemotorsReciprocating piston enginesHydraulic cylinderCam
This invention provides an environmental protection type oil pressure power machine. It has four oil hydraulic cylinders; end lap of each cylinder is splice jointed to foundation support and can reciprocating, each cylinder is connected to oil pump through oil pipe. Control valve is fixed on oil pipe, oil pump is connected to motor and motor is connected to power source. Piston bar of each cylinder is connected to four segment connecting-rod journal of same crankshaft, each segment connecting-rod is connected to crankshaft central axis by a pair of cam, the four segment connecting-rods is distributed uniformly to crankshaft central axis circle direction, space phase included angle of adjoint two segment connecting-rod is greater than or equal to 90 degrees, front end axis and back end axis of crankshaft are connected to output axis by driving member. in the process pf this invention, fuel is not used and high temperature and high pressure are not generated, and there is no harmful gas discharged. Its structure is simple. Fabrication cost is low, using is convenient, useful life is long, maintenance is easy, output power is big, efficiency is high, and so the energy is economized.
Owner:刘文娟 +2
Electrophoretic deposition preparation method for V2O5 film
ActiveCN102400199ANo need for high temperature and high pressureSimple processElectrophoretic coatingsPolymer scienceElectrophoresis
The invention relates to an electrophoretic deposition preparation method for a V2O5 film, and belongs to the technical field of functional film preparation and performance. V2O5 is used as a raw material and H2O2 is used as a reaction solvent in the method. The method comprises the following steps of: mixing 0.6 to 1.5 grams of pure V2O5 and 30 to 90 milliliters of 20 to 40 weight percent H2O2 solution, preparing V2O5 sol in an electromagnetic-ultrasonic mixed stirring manner, depositing a V2O5 film on a piece of indium tin oxide (ITO) conductive glass by an electrophoretic deposition method, performing thermal treatment on the film, and thus obtaining a laminar V2O5 film. By the method, a surfactant or a catalyst and high temperature or high pressure are not needed. The invention has the advantages that: the method is easy to operate, the cost is low and the formed V2O5 film structure is quite compact.
Owner:昆明理工大学设计研究院有限公司
Synthesis method of imatinib and imatinib mesylate
PendingCN111039921AOverall Reaction Time ReducedEasy to operateSulfonic acids salts preparationDimethyl acetalNitro reduction
The invention relates to a synthesis method of imatinib and imatinib mesylate. The method comprises the following steps: condensing 3-acetylpyridine and N,N-dimethylformamide dimethyl acetal which aretaken as initial raw materials to obtain 3-dimethylamino-1-(3-pyridyl)-2-propen-1-one, then reacting with 2-methyl-5-nitrophenylguanidine nitrate to form a pyrimidine ring, performing nitro reductionto obtain N-(5-amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidinamine, amidating the N-(5-amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidinamine and 4-(chloromethyl)benzoyl chloride, performing affinitysubstitution with 1-methylpiperazine to obtain imatinib, and salifying the imatinib and methanesulfonic acid. The products obtained by the method have the advantages of few impurities, simplicity in post-treatment, high total yield, greenness, environmental protection and safety, and is suitable for a production process for large-scale industrial production of imatinib mesylate.
Owner:杭州沧海帆医药科技有限公司
Homogeneous preparation method of cationic flocculant from bacterial cellulose
ActiveCN104817643AHigh degree of polymerizationMolecular chain lengthWater/sewage treatment by flocculation/precipitationSocial benefitsTurbidity
The invention discloses a homogeneous preparation method of a cationic flocculant from bacterial cellulose, which comprises the following steps: bacterial cellulose regeneration, regenerated cellulose dissolution, and etherification-modified homogeneous preparation of the cationic flocculant. The cationic flocculant belongs to a natural high polymer flocculant, is degradable under natural conditions, and lowers the dependence of the traditional high polymers on fossil resources. The turbidity removal rate for kaolin simulated sewage is greater than 75%, and the delivery quantity is at most 0.05%. The cationic flocculant is convenient for storage and transportation, is widely used in the fields of papermaking, urban oilfield sewage treatment and the like, and has important environmental and social benefits.
Owner:盱眙凹土能源环保材料研发中心 +1
Resource recycling handling method of dimethoate pesticide wastewater
InactiveCN106335962AImprove adsorption efficiencyEasy desorption and regenerationWater treatment compoundsWater contaminantsDimethoateBoiling point
The invention discloses a resource recycling handling method of dimethoate pesticide wastewater, and the method comprises the steps of (1) adsorbing dimethoate pesticide wastewater through an adsorber which is provided with a macro-porous resin to obtain wastewater effluent and the macro-porous resin adsorbed with the dimethoate; (2) conducting desorption and regeneration of the macro-porous resin adsorbed with the dimethoate through a desorption agent to obtain desorption liquid contained with the dimethoate, wherein the boiling point of the adopted desorption agent is lower than that of the dimethoate and can dissolve the dimethoate; (3) disposing the desorption liquid by adopting one or the combination of two of method a and method b, wherein method a is that by distilling the desorption liquid to separate the dimethoate and the desorption agent, desorption agent component and dimethoate component are obtained, then the dimethoate component is used for preparing dimethoate pesticide; method b is to use the desorption liquid in the step (2) as a desorption agent. The resource recycling handling method of dimethoate pesticide wastewater can not only adsorb the dimethoate from the dimethoate pesticide wastewater, but also recycle the dimethoate in the wastewater.
Owner:SUZHOU SUJING ENVIRONMENTAL ENG
Fluosulfonic acid containing zwitterionic surfactant and preparation method
ActiveCN107469731AUse low concentrationImprove salt resistanceTransportation and packagingSulfonic acids salts preparationAlkaneCarbon chain
The invention provides a fluosulfonic acid containing zwitterionic surfactant and a preparation method. A chemical general formula of the fluosulfonic acid containing zwitterionic surfactant disclosed by the invention is: the formula (1) is shown in the description, wherein Rf is any one of C3-C20 fluorine-containing carbon chain groups, and a formula is any one of CH2 or a group of a formula; R1 is any one of a divalent group of a C2-C5 alkane chain; R2 is any one of C1-C6 alkane groups, phenyl groups or benzyl groups; Y is any one of C1-C4 alkane groups, and X is any one of hydrogen or hydroxyl groups. The preparation method of the fluosulfonic acid containing zwitterionic surfactant disclosed by the invention comprises the following steps: preparing perfluorinated halides or perfluorinated methyl ester and triamine alkyl-alkenyl to obtain an intermediate (I), carrying out reaction on the intermediate (I) and the halides to obtain an intermediate (II), and carrying out reaction on the intermediate (II) and halogenated sulfonate or lactone sulfonate to obtain the fluosulfonic acid containing zwitterionic surfactant, wherein a chemical formula of the intermediate (I) is: the formula (I) is shown in the description; a chemical formula of the intermediate (II) is: the formula (II) is shown in the description.
Owner:JIANGSU LEE & MAN CHEM +2
Method for synthesizing biobased 1,5-pentadiisocyanate
InactiveCN106883150AImprove operational safetyNo need for high temperature and high pressureIsocyanic acid derivatives preparationOrganic compound preparationDistillationBoiling point
The invention discloses a method for synthesizing biobased 1,5-pentadiisocyanate. The method comprises the following steps: firstly dissolving triphosgene solid in a solvent to obtain a mixed system for later use; dissolving 1,5-pentamethylene diamine and an acid-binding agent in the solvent to obtain a mixed solution for later use; finally pumping the mixed solution into the mixed system under nitrogen condition, stirring, mixing and reacting; filtering after the reaction is ended, extracting liquid part, carrying out reduced-pressure distillation for removing low-boiling-point compounds, then continuing to carry out reduced-pressure distillation to obtain colorless liquid which is biobased 1,5-pentadiisocyanate.
Owner:NANJING UNIV OF TECH
Unsaturated vegetable oil alkylate and preparation method based on uv photocatalytic reaction
ActiveCN106146307BIncrease added valuePositive reference valuePreparation by ester-hydroxy reactionOrganic compound preparationPhotocatalytic reactionVegetable oil
The invention belongs to the field of UV photocatalytic chemical technology, and a unsaturated plant oil alkyl and its preparation method based on UV photocatalytic reactions is disclosed.This alkyl has the following formula (1) and formula (2). 1 It is a direct chain or branched alkane base of C1 to C4, R 2 For ‑H, 、Cl, ‑ch 3 , ‑Oh, hoch 3 , ‑C (CH 3 Cure 3 At least one of the waiting; n = 0 or 1; 1 <m; 0 <m+s <4; 6 <L+M+N+S+T <16; R 3 For ‑Oh, hch 3 At least one of ‑Cooh and other; A = 1 or 2; 0
Owner:SOUTH CHINA AGRI UNIV
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