Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
109results about How to "Not generated" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Method for producing high-solid content low-viscosity polymer polylol
The invention relates to a method for preparing polymer polyol with high solid content and low viscosity. The method adopts an intermittent method or a continuous method, and uses a basic polyether polyol as a continuous phase to perform in situ polymerization on a vinyl monomer, polyether polyol, a dispersing agent, and a chain transfer agent under the action of a free radical initiator to produce the polymer polyol with high solid content and low viscosity; or the method uses a certain amount of the polymer polyol with target solid content as a substrate material, mixes the raw materials such as the basic polyether polyol, the free radical initiator, the vinyl monomer, the dispersing agent, and the chain transfer agent evenly according to certain mixture ratio, and adds the mixture to the substrate material continuously to be polymerized so as to obtain the polymer polyol with high solid content and low viscosity. The polymer polyol produced by the method has the advantages of low viscosity, stable dispersion of solid particles, small average particle size of the solid particles, and even particle size. The polymer polyol improves the physical mechanical properties of products applying the polymer polyol, and has wide application range.
Owner:TIANJIN DAGU CHEM CO LTD
Process for catalytic oxidation-compound flocculation integrated treatment of comprehensive waste water
InactiveCN102126803AReduce drug costsReduce dosageMultistage water/sewage treatmentWater/sewage treatment by oxidationChemistryTreatment effect
The invention provides a catalytic oxidation-compound flocculation integrated treatment process which aims to solve the problem that organic comprehensive waste water is difficult to treat because the organic comprehensive waste water contains organic substances difficult to biologically degrade. The treatment process integrates catalytic oxidation, Fenton oxidation, compound flocculation, high-efficiency precipitation and other technical advantages; a high-efficiency catalyst is used to improve the treatment efficiency or biodegradability; and a compound flocculant is used as the core to simplify the treatment process and ensure the stable treatment effect, thereby achieving the catalytic oxidation-compound flocculation integration. The invention has the characteristics of concise technical line, high treatment efficiency and simple operation process.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Shape memory alloy particle reinforced light metal-based composite material and preparation method thereof
The invention provides a shape memory alloy particle reinforced light metal-based composite material and a preparation method thereof. The composite material comprises a substrate and shape memory alloy particles, wherein the volume content of the shape memory alloy particles is 5-40% and the thickness of the composite material is 2-20 millimeters. The method is characterized by prearranging the shape memory alloy particles in an aluminium alloy or magnesium alloy plate by adopting the dot matrix porous particle prearranging mode to prepare the shape memory alloy particle reinforced light metal-based composite material through the friction stir processing technology. The composite material has the following advantages: the particles in the composite material are uniformly distributed; the interface between the particles and the substrate is clean and no reactants are generated on the interface; and the composite material has the shape memory effect and excellent damping property.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Chlorination aromatic hydrocarbon waste gases catalytic purification method
InactiveCN101185796ALower catalyst costsApplication prospect of environmental protectionDispersed particle separationDecompositionEnvironmental chemistry
The invention discloses a catalytic purification method of chlorobenzene waste gas. The invention includes the following steps: the reaction is carried out by introducing humid air into the waste gas containing chlorobenzene in the presence of the catalyst; the catalyst is composed of a carrier which is stable in humid air, transition metal oxide which is carried on the carrier, rare earth oxide and phosphoric acid; the using method of the invention is that, the invention can stably convert the chlorobenzene in the waste gas into carbon dioxide and hydrogen chloride in a long time in humid air, at lower reaction temperature and in the presence of oxidation decomposition catalyst, while the activity of the catalyst is not reduced; the catalyst is composed of transition metal oxide and rare earth oxide, so the cost of the catalyst is low. The invention uses the extremely economical method for eliminating chlorohydrocarbon in the waste gas, has no formation of polychlorinated by-products and does not cause secondary pollution, so the invention is a very effective method for the treatment of the waste gas containing chlorohydrocarbon and has greater environmental protection application prospect.
Owner:EAST CHINA UNIV OF SCI & TECH
Applications of Ni/SiC catalyst to methane production through syngas conversion
InactiveCN102020525AHigh conversion rate of CONo carbon depositPhysical/chemical process catalystsHydrocarbon from carbon oxidesHigh pressureHigh activity
The invention discloses the applications of a Ni / SiC catalyst to methane production through syngas conversion. Silicon carbide with favorable thermal conductivity and mechanical strength is used as a carrier of a nickel catalyst, wherein the catalyst contains 1-20 percent of nickel metal, and the preparation method is simple and practical. The catalyst can rapidly export a great number of heat generated in a methane production reaction through syngas conversion, avoid congregation of nickel catalyst particles due to partial overheat and inactivation caused by carbon deposition, have the advantages of strong abrasion resistance, high activity, strong carbon deposition resistance, and the like and can be operated at a higher airspeed under high pressure.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Lactose-free milk preparation method based on separation membrane technologies
The invention discloses a lactose-free milk preparation method based on separation membrane technologies, in which the four membrane technologies of microfiltration, ultrafiltration, electrodialysis and nanofiltration are coupled. The method includes the steps that firstly, most components in milk are intercepted through microfiltration and ultrafiltration, a penetrating solution is an aqueous solution containing lactose and inorganic salt, and after the inorganic salt is recovered by electrodialysis, desalinated liquid containing lactose and a small amount of inorganic salt is obtained; then,the desalinated liquid is subjected to nanofiltration separation to intercept lactose, and thus lactose removal is completed; components except lactose are recombined to obtain lactose-free milk powder through spray drying. By means of the method, the lactose interception rate reaches up to 95.85%; the production of the lactose-free milk powder is realized; meanwhile, water added in the production process can be effectively recovered and reused, lactose is also recovered by nanofiltration, and thus the method can guarantee that the whole process is environmentally friendly and free of by-product generation and raw material waste; besides, no chemical substance is added in the process, and thus the taste of milk will not be affected.
Owner:ZHEJIANG UNIV OF TECH
Proline ionic liquid and preparation method and application thereof
InactiveCN102010371ASimple preparation processRapid responseCarboxylic acid nitrile preparationOrganic compound preparationIon exchangeIon
The invention discloses proline ionic liquid and a preparation method and application thereof. The positive ion of the ionic liquid is one of an imidazolyl positive ion, a pyridyl positive ion, a pyrryl positive ion, a pyrazolyl positive ion and a morpholine compound positive ion; and the negative ion of the ionic liquid is proline. The preparation method for the ionic liquid comprises the following steps of: performing quaternization to obtain ionic halide; performing neutralization reaction to obtain amino acid salt; and performing ion exchange to obtain the target ionic liquid. The invention also discloses the application of the proline ionic liquid in Knoevenagel condensation reaction. The proline ionic liquid has good effect of catalyzing the Knoevenagel condensation reaction, can be recycled, and ensures that the products have high yield and are easy to separate.
Owner:SOUTH CHINA UNIV OF TECH
Trichloroethylene waste gas catalytic purification method
InactiveCN1806897AReduce contentReduced activityMolecular sieve catalystsDispersed particle separationPurification methodsPhosphoric acid
The invention discloses the catalytic cleaning method of trichloroethylene. The method comprises the following steps: insufflating the humid air into waste gas containing trichloroethylene to carry out reaction at the existence of catalyst which is composed by carrier, rare metal, rare earth oxide and phosphorus acid; at humid air and low temperature, the trichloroethylene changed to carbon dioxide and hydrochloride, and the catalyst keeping active. The precious metal content in catalyst is few, and there is not polychlorocarbon byproduct, so the method is effective and environmental conservation.
Owner:EAST CHINA UNIV OF SCI & TECH
Method for preparing carbon supported transition metal phosphide material
The invention relates to a method for preparing a novel carbon supported transition metal phosphide (Fe2P, Co2P, Ni12P5) material, which comprises the steps: 1) adding soluble VIII metal salt into hydroxyphenol solution, and stirring the mixed solution to dissolve the metal salt; 2) adding diammonium phosphate into the solution according to certain proportion to form a precipitate, and dripping proper amount of concentrated nitric acid until the precipitate is exactly dissolved; and 3) dripping formaldehyde solution in the stirring state, making the solution form gel, and obtaining metal phosphide modified gel carbon through drying and high-temperature roasting in inert atmosphere. The invention adopts a method of roasting a polymer containing metal ions, phosphate and phenolic aldehyde to perform one-step preparation of the metal phosphide modified gel carbon under the protection of inert gas of N2.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Method for synthesizing isomerous tridecanol polyoxyethylene ether
Owner:ZHEJIANG HUANGMA TECH
Arthrobacter mutant strain, method for producing lactase from mutant strain and method for preparing lactulose by using lactase
InactiveCN102168028ANot generatedHigh purityBacteriaMicroorganism based processesCatalytic methodLactase
The invention belongs to the technical fields of food and biology, and discloses an Arthrobacter mutant strain (Arthrobacter sp.jnsb-2), a method for producing lactase by fermentation culturing of the mutant strain and a catalytic method for synthesizing lactulose from lactose and levulose by using the lactase as a catalyst. In the invention, the Arthrobacter mutant strain jnsb-2 is used as the strain of which the preservation number is CCTCC NO:M209210, and is subjected to fermentation culturing on a fermentation culture medium composed of a carbon source, a nitrogen source and inorganic salt, thus obtaining the lactase; and by using the lactase as a catalyst, lactose and levulose can be used as substrates and converted into the lactulose by an enzyme method. The lactase produced by the fermentation of the strain has the advantages of extensive culturing conditions, short enzyme production cycle and convenient operation process; and by using the enzyme method to convert the lactase into the lactulose, the defects that the product is easy to degrade and the colored byproduct is difficult to remove in the lactulose preparation process based on the chemical method are overcome, and a high product purity is achieved.
Owner:JIANGNAN UNIV
Transition group element doped room-temperature ferromagnetic two-dimensional material and preparation method thereof
ActiveCN110294463AHigh Curie temperatureFerromagnetic at room temperatureMaterial nanotechnologySelenium/tellurium compounds with other elementsSingle substanceGas phase
The invention discloses a transition group element doped room-temperature ferromagnetic two-dimensional material and a preparation method. By adopting the method, the preparation of two-dimensional V0.8Fe0.2Se2 nanosheets uniformly doped with Fe elements can be achieved. The preparation method comprises two steps: first step, a V0.8Fe0.2Se2 bulk single crystal is prepared by a chemical vapor transport method; second step, the bulk V0.8Fe0.2Se2 single crystal is thinned into a two-dimensional V0.8Fe0.2Se2 nanosheet by a liquid phase stripping method. The undoped VSe2 bulk material is nonmagnetic, and the doped two-dimensional V0.8Fe0.2Se2 nanoplatelet has room temperature ferromagnetism. The method comprises the specific steps: 1, weighing elemental single substances conforming to the molarratio and sealing the substances at one end of a quartz tube; 2, making the V0.8Fe0.2Se2 bulk single crystal grow through chemical vapor transport; 3, thinning the V0.8Fe0.2Se2 bulk single crystal into the two-dimensional V0.8Fe0.2Se2 nanosheet by using a formamide solvent and the liquid phase stripping method; 4, collecting the two-dimensional Vo.8Feo.2Se2 nanosheets stripped from the solution by centrifugation. The two-dimensional V0.8Fe0.2Se2 nanosheet prepared by the method is uniform in doping, has room-temperature ferromagnetism, and has a wide application prospect in the field of high-performance spin electronic devices.
Owner:EAST CHINA NORMAL UNIV
Catalyst for reforming methane and carbon dioxide to prepare synthesis gas, and preparation method for catalyst
The invention discloses a catalyst for reforming methane and carbon dioxide to prepare synthesis gas. The catalyst is prepared from the components in percentage by mass: 2-3% of metal iridium and 97-98% of a cerium oxide-based solid solution, wherein the cerium oxide-based solid solution is pure cerium oxide, a cerium oxide-lanthanum oxide solid solution, a cerium oxide-praseodymium oxide solid solution, a cerium oxide-zirconium oxide solid solution or a cerium oxide-titanium oxide solid solution. According to the invention, the catalyst for reforming methane and carbon dioxide to prepare synthesis gas is prepared through a simple deposition-precipitation, coprecipitation or sequential precipitation method, and the catalyst shows the characteristic of high catalytic efficiency in reforming reaction of dried methane gas at 750-800 DEG C, and has relatively good stability.
Owner:NAT UNIV OF SINGAPORE SUZHOU RES INST +1
Method for preparing Sm-Co based magnetic nano-material
ActiveCN103586465AHighlight substantive featuresDistributeInorganic material magnetismNanotechnologyMagnetic transitionsCompound (substance)
The invention discloses a method for preparing Sm-Co based magnetic nano-material and relates to a magnetic material containing rare earth metals and magnetic transition metals. The method for preparing the Sm-Co based magnetic nano-material combines physical methods and chemical methods in the following manner: hard magnetic SmCo6.9Hf0.1 nano-particles are obtained as a core in a ball-milling mode, the outer layers of the SmCo6.9Hf0.1 nano-particles are coated with soft magnetic elementary substance Co or Fe shells in combination with the polyol reduction method, and thus the Sm-Co based magnetic nano-material with the core-shell structure is prepared. Because the outer layer of the Sm-Co based magnetic nano-material is coated with the soft magnetic transition metal elementary substance shells, the Sm-Co based magnetic nano-material is prevented from being oxidized to a certain extent, and meanwhile possibility is provided for further pressing and sintering blocky materials with higher magnetic performance.
Owner:HEBEI UNIV OF TECH
Process for preparing L- molecular sieve membranes on different carriers
InactiveCN101284671ASimple and fast operationEasy to operateCrystalline aluminosilicate zeolitesMolecular-sieve compoundsMolecular sieveCrystallography
The invention belongs to the field of inorganic membrane preparation, specifically relates to a method for preparing L-shaped molecular sieve membranes on a stainless steel metal mesh, a ceramic plate or a sheet glass carrier, and particularly relates to a method of evenly coating seed crystals on the carrier by baking so as to prepare the L-shaped molecular sieve membranes. The method comprises the steps of preparing the L-shaped molecular sieve seed crystal solution, subjecting the obtained seed crystals to centrifugal processing; using distilled water to wash the seed crystals to neutrality; coating the seed crystals in the state of emulsion on the washed surface of the carrier; baking the surface with an electric furnace to cause the emulsion to spread evenly and compactly over the surface of the carrier so as to obtain the carrier coated with the seed crystals; placing the carrier coated with the seed crystals in a synthetic fluid for crystallization at the temperature of 160 to 180 DEG C for 2 to 4 days; drying the obtained molecular sieve membranes in an oven at 80 to 120 DEG C after washing. The X-ray diffraction and scanning electronic microscope test on the synthesized L-shaped molecular sieve membranes show that a layer of continuous and compact L-shaped molecular sieve membranes grow on the surfaces of the seed crystals without mixed crystals and have the advantage of short period for the synthesis of the L-shaped molecular sieve membranes.
Owner:JILIN UNIV
Ruthenium catalyst capable of efficiently catalyzing decomposing of formic acid for preparing hydrogen
InactiveCN104014372AHigh activityImprove stabilityHydrogenOrganic-compounds/hydrides/coordination-complexes catalystsChemical synthesisTurnover number
The invention discloses a ruthenium catalyst capable of efficiently catalyzing decomposing of formic acid for preparing hydrogen, and belongs to the technical field of energy source catalysis materials and hydrogen preparation. The invention mainly relates to preparation of the efficient catalyst and the process of catalyzing decomposition of formic acid by applying the catalyst. An optimum catalyst turnover number (TON) is obtained by reasonably controlling the reaction temperature, catalyst solvents, additives and other factors in the decomposition process of formic acid. The catalyst has the TON value larger than 1.8 million under an optimum reaction condition. The catalyst is capable of catalyzing formic acid for preparing hydrogen under a normal-temperature condition, and obtained hydrogen is directly applicable to chemical synthesis, fuel cells, engines and the like.
Owner:ANHUI UNIV OF SCI & TECH
Method for preparing amide by metallic sodium catalyzed ester ammonolysis reaction
InactiveCN106928083ALow costEasy to separateOrganic compound preparationCarboxylic acid amides preparationHigh pressureReaction speed
The invention discloses a method for preparing amides by metallic sodium-catalyzed ester amination reaction: the reaction is carried out in an autoclave at 90-140°C with ester and liquid ammonia as raw materials and metallic sodium as a catalyst, ester:ammonia=1:1.2 The molar ratio of ~5.0, metal sodium is 4~10% of the molar weight of the ester; when the reaction pressure no longer drops, the reaction is stopped, the unreacted ammonia is recovered, and the obtained reaction product is post-processed to obtain the product. The method can efficiently prepare amides; and the raw materials are cheap, low in toxicity, high in reactivity, less in catalyst consumption, fast in reaction speed, high in reaction conversion rate, and easy to separate products.
Owner:ZHEJIANG UNIV
Device and method for adjusting oxygen concentration in liquid lead-bismuth alloy by using solid lead oxide
InactiveCN103499983ANot generatedOxygen ion exchange efficiency is highRatio controlLead bismuthLead oxide
The invention discloses a device and a method for adjusting oxygen concentration in a liquid lead-bismuth alloy by using a solid lead oxide, and belongs to the technical field of nuclear engineering. The device comprises a solid oxide ion exchanger bypass, a solid oxide ion exchanger mounting hole, a liquid lead-bismuth alloy inlet, a liquid lead-bismuth alloy outlet, a bypass heat exchanger and a solid oxide ion exchanger, wherein the solid oxide ion exchanger mounting hole is formed in the solid oxide ion exchanger bypass; the liquid lead-bismuth alloy inlet is formed in the solid oxide ion exchanger bypass; the liquid lead-bismuth alloy outlet is formed in the solid oxide ion exchanger bypass; the bypass heat exchanger is wound on the outer wall of the solid oxide ion exchanger bypass; the solid oxide ion exchanger is arranged in the solid oxide ion exchanger bypass. The method comprises the following steps: arranging the solid oxide ion exchanger and the solid oxide ion exchanger bypass respectively; adjusting the oxygen concentration of the liquid lead-bismuth alloy by adjusting the cooling power of the bypass heat exchanger. According to the device and the method, the oxygen content in the liquid lead-bismuth alloy is adjusted by controlling the solid lead oxide, so that the defects existing in the prior art are overcome.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Method and device for treating desulfurized waste water
InactiveCN108558098ALow costNot generatedWater/sewage treatment by centrifugal separationCalcium/strontium/barium sulfatesSingle effectChemistry
The invention relates to the field of industrial waste water treatment, in particular to a method and device for treating desulfurized waste water. The combined process treatment method of pretreatment, two-stage MVR evaporative crystallization, single-effect evaporation and spray drying is adopted, water, calcium sulfate, magnesium sulfate monohydrate and sodium chloride in the desulfurized wastewater are separated and recycled, the utilization rate of the waste water is increased, multiple products can be obtained, and recycling of resources is achieved.
Owner:BEIJING NOVEL ENVIRONMENTAL PROTECTION +1
Chiral bridge ring skeleton oxindole piperidine compound and synthesis method of compound
InactiveCN107602577ASimple and efficient operationGood yieldOrganic chemistryOrganic-compounds/hydrides/coordination-complexes catalystsSolventImide
The invention discloses a chiral nitrogen oxygen bridge ring skeleton and spiro oxindole compound and a synthesis method of the compound. The method specifically comprises the following steps: takinga 3-pyrrolyl oxindole and beta,gamma-unsaturated alpha-keto ester derived from salicylaldehyde as a reactant, and in the presence of a chiral thiourea compound and bis(trifluoromethanesulfonyl)imide,performing an asymmetric tandem cyclization reaction in a methyl tert-butyl ether and toluene solvent to obtain a product. The method disclosed by the invention has simple and easily available raw materials, mild reaction conditions, simple and convenient post-treatment, wide application range, good yield, and high enantioselectivity and non-enantioselectivity; and therefore, the synthesized product has a potential medicinal value.
Owner:SUZHOU UNIV
Fibrous nanometer catalyst material excited with natural light and its prepn process
InactiveCN1846850AEvenly dispersedLarge specific surface areaCatalyst activation/preparationFiberNano catalyst
The fibrous nanometer catalyst material excited with natural light and its preparation process belongs to the field of environment purifying material technology. The nanometer photocatalytic particle and polymer carrier solution are high voltage electrostatic spun to form nanometer fiber with nanometer TiO2 particle. The preparation process includes sol-gel process to prepare chemically doped nanometer TiO2; modifying with conjugated organic matter; adding the prepared nanometer TiO2 particle into polymer solution and spinning in high voltage electric field to obtain fibrous nanometer catalyst. The fibrous nanometer catalyst material needs no ultraviolet ray excitation, and may be excited with natural light to degrade organic pollutant. The present invention may be used in purifying air and water.
Owner:北京纳诺天地科技有限公司
Method for recycling Al resources in Friedel-Crafts reaction
ActiveCN104803873ANot generatedReduce generationOrganic compound preparationGroup 5/15 element organic compoundsWastewaterSolvent
The invention relates to a method for recycling Al resources in a Friedel-Crafts reaction. The method comprises steps performed after the Friedel-Crafts reaction as follows: (1), a reaction system is concentrated, a reaction solvent is recovered, a replacement solvent is added to disperse concentrated residues when the size of the reaction system is concentrated to 20%-50% of the original size, and concentration is continued until the reaction solvent is completely eliminated; (2), the temperature of the system obtained after the step (1) is controlled to range from subzero 20 DEG C to 100 DEG C, water is added to the system, the mixture is sufficiently mixed and filtered, the replacement solvent is recovered after filtrate is concentrated, meanwhile, a product of the Friedel-Crafts reaction is obtained, aluminum(III) chloride hexahydrate is obtained after a filter cake is dried, and the mole ratio of the added water to aluminum (III) chloride is (1-10):1. According to the method, no wastewater or acid gas is produced, the operation is simple, and environmental protection is facilitated.
Owner:HONGHU YITAI TECH CO LTD
Polyoxyethylene ether stearate preparation method
The invention discloses a polyoxyethylene ether stearate preparation method. A polymerization reaction on raw materials comprising stearic acid and oxirane is carried out in the presence of a zinc oxide catalyst at a temperature of 150-160DEG C for 2-5h in order to obtain polyoxyethylene ether stearate, wherein a weight part ratio of stearic acid to oxirane is 20-25:15-23, and the weight part number of zinc oxide is 2-6. The method has the advantages of mild reaction conditions, low equipment requirements, high yield, no impurity generation and environmental protection.
Owner:QINGDAO SHUAIWANG OIL CHEM
A preparing method of GLYX-13 and a compound used for preparing the GLYX-13
ActiveCN107474107AHigh purityEasy to handlePeptide preparation methodsBulk chemical productionL-threonineTert butyl
The invention belongs to the field of medicine compounds, and provides a preparing method of GLYX-13 and a compound used for preparing the GLYX-13. Fmoc-O-tert-butyl-L-threonine, Fmoc-L-proline, N-carbobenzyloxy-L-threoninamide and proline benzyl ester hydrochloride are adopted as initial raw materials of the method. By adoption of the method, the GLYX-13 can be prepared in a high yield in an industrial scale through eight easy and economical synthetic steps, the GLYX-13 can be prepared through simple process operation in a good yield and at a low cost without the need of utilizing expensive peptide condensation agents or controlled, precursor-chemical or highly corrosive deprotection agents.
Owner:NHWA PHARMA CORPORATION +1
'Copper/straw' electromagnetic wave shield composite material and preparation method thereof
InactiveCN102121100AHigh peel strengthImprove conductivityMagnetic/electric field screeningLayered productsScotch tapeCopper plating
The invention belongs to the technical field of electromagnetic wave shield materials, and relates to a 'copper / straw' electromagnetic wave shield composite material and a preparation method thereof. The composite material provided by the invention is prepared by plating copper membranes on the straws. The preparation method comprises the following steps: cleaning straws; immerging the cleaned straws in a silane coupling agent solution, and stoving; and carrying out silver nano particle activation, chemically copper plating and the like. The adhesivity between the copper membrane and straw substrate of the composite material is good, and can be tested through the Scotch tapes of a 3M (Minnesota Mining and Manufacturing) company; the electromagnetic wave shield efficiency of the 'copper / straw' composite material within the range of 0.15-1050MHz is more than 40dB, i.e., the electromagnetic wave anti-radiation rate is more than 99.99%. The composite material has the advantages of low cost, simple manufacturing process, great market prospect and favorable application value, can be widely applied to the electromagnetic wave shield of large-area building wall bodies, and is used for externally packaging the electromagnetic wave shield by precise instrument and the like.
Owner:FUDAN UNIV
Method for synthesizing castor oil polyoxyethylene ether
The invention relates to a synthetic method for polyoxyethylene castor oil, and belongs to the synthetic technical field of an organic compound. Castor oil and ethylene oxide are used as the raw material, and the polyoxyethylene castor oil is produced through polyreaction with the existence of a catalyst; the weight ratio between the castor oil and the ethylene oxide is 1: 0.145 to 2.98; the catalyst is any one component or the mixture of more than one component in solid sodium methoxide, sodium methoxide methanol solution, KOH, and NaOH, etc., and the adding amount of the catalyst is 0.05 to 0.2 percent of the weight percentage of the produced polyoxyethylene castor oil. Technological parameters and conditions such as the raw material proportioning, the adding amount of the catalyst, the polyreaction temperature and time, etc. are reasonably determined, the reaction condition is temperate, and the requirement on the equipment is low. The yield rate is high, no impurity can be generated, and the invention is environment friendly. The polyoxyethylene castor oil produced by the invention has light color, transparent appearance, good level dyeing performance, strong compatibility and wide molecular weight adjustment range.
Owner:王伟松
Method for preparing N-ethyl-N-hydroxyethylaniline
InactiveCN108117492AReduce dosageImprove catalytic performanceOrganic compound preparationAmino-hyroxy compound preparationEthylene oxideSolvent
The invention discloses a method for preparing N-ethyl-N-hydroxyethylaniline. The method comprises the following steps: by taking N-ethylaniline and ethylene oxide as raw materials, in the absence ofa solvent, under catalysis of taurine, performing programmed heating, directly synthesizing N-ethyl-N-hydroxyethylaniline, cooling, and discharging, thereby obtaining a finished product. The method iseasy in raw material obtaining, good in atom economy, gentle in reaction condition, green and environment-friendly, simple and efficient and applicable to industrial production.
Owner:JIANGSU YUANDA XIANLE PHARMA
Preparation method of isoxaflutole
The invention discloses a preparation method of isoxaflutole. The structure of the isoxaflutole is disclosed as Formula (II). The method comprises the following step: contacting a compound disclosed as Formula (I) with an oxidizer, wherein the oxidizer contains peroxy organic acid; the peroxy organic acid is a compound disclosed as Formula (III), wherein X, Y and Z are identical or different and respectively independently hydrogen, halogen, or C1-C3 substituted or non-substituted alkyl group. The preparation method disclosed by the invention has the advantages of short reaction time, thorough reaction, high reaction yield, low raw material cost, mild reaction conditions and the like.
Owner:NUTRICHEM LAB CO LTD
Method for synthesizing hexade/octode mixing alcohol polyoxyethylene
A synthesizing method of hexadecanol / octodecanol-mixed polyoxyethylene ether belongs to the filed of synthesizing technology of organic compounds. Hexadecanol / octodecanol-mixed polyoxyethylene ether is produced through polymerization of raw materials including mixed hexadecanol / octodecanol and ethylene oxide under the existence of a catalyst. The weight proportion of the mixed hexadecanol / octodecanol and ethylene oxide is 1:0.145-18.6; the catalyst is one of or a mixture containing more than one of solid sodium methylate, methanol solution of sodium methylate, KOH, NaOH, etc, and the addition thereof is 0.05-0.2 weight percent of prepared hexadecanol / octodecanol-mixed polyoxyethylene ether. Through rational determination of technological parameters and conditions such as raw material proportion, catalyst amount, polymerization temperature and time, etc., the method of the invention can have the advantages of mild reaction condition, low equipment requirement and high product yield and, in addition, has no impurity or pollutant production. The product has light color, good appearance, wide adjustable molecular weight range and high mutual modulation effect when in mixed application with products having other properties.
Owner:王伟松
Preparation method of tertiary amine-terminated polyether nonionic surfactant
ActiveCN114874431AReduce wearHigh reactivityTransportation and packagingMixingChemical synthesisPtru catalyst
The invention discloses a preparation method of a tertiary amine-terminated polyether nonionic surfactant, and belongs to the field of chemical synthesis technologies and surfactants. The preparation method comprises the following steps: (1) placing a supported catalyst in a fixed bed, and preheating the fixed bed; dissolving polyether amine and paraformaldehyde in a solvent to obtain a dissolved solution; then injecting the dissolved solution into a fixed bed, replacing air in the fixed bed with hydrogen, pressurizing the fixed bed with hydrogen, and carrying out a reaction; (2) after the reaction is finished, collecting feed liquid; and after the feed liquid is cooled, filtering and carrying out reduced pressure distillation to obtain the tertiary amine-terminated polyether. The method for continuously producing the tertiary amine-terminated polyether by using the fixed bed has the characteristics of safety, convenience in operation, short reaction time, few side reactions and suitability for large-scale production; the conversion rate of the primary amine is high, the selectivity of the tertiary amine is good, the yield of the tertiary amine-terminated polyether is up to 98.2%, and meanwhile, the tertiary amine-terminated polyether also has better surface activity.
Owner:JIANGNAN UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com