154 results about "Organic solvent" patented technology

The invention relates to a lithium silicate-coated Ni-Co lithium aluminate positive electrode material and a preparation method thereof. The mass percent of lithium silicate in the material accounts for 1-10wt%, a coating layer with a thickness being 2-20 nanometers is formed from the silicon silicate and is coated on Ni-Co lithium aluminate, and the positive electrode material is a spherical particle with a grain size being 5-15 micrometers. The method comprises the following steps of (1) adding a silicon source into an organic solvent, performing uniform stirring, adding water, adding Co-Alnickel hydroxide, performing heating and stirring reaction, and performing drying to obtain silicon dioxide-coated Co-Al nickel hydroxide precursor powder; and (2) grinding and uniformly mixing the silicon dioxide-coated Co-Al nickel hydroxide precursor powder and a lithium salt, placing the mixture in a tubular furnace, and performing two-segment calcination under an oxidization atmosphere, thereby obtaining the lithium silicate-coated Ni-Co lithium aluminate positive electrode material. The positive electrode has relatively good cycle stability and large-rate discharging performance; and bythe method, the problem of lithium resided on a surface during conventional coating can be effectively reduced, and the method is low in cost and simple in process and is suitable for industrial production.

The invention relates to the technical field of flexible circuit boards, in particular to a halogen-free resin composition. The halogen-free resin composition comprises, by weight, 40-60 parts of polyester-type polyurethane resin, 15-25 parts of polyfunctional epoxy resin, 10-20 parts of phosphorus-containing phenolic resin, 15-25 parts of phosphorus-containing flame retardant and a proper quantity of organic solvent. The polyester-type polyurethane resin contains carboxyl, the acid value is 35 KOHmg/g, and the number-average molecular weight is 10,000-50,000. The polyester-type polyurethane resin containing the carboxyl can be reacted with biphenyl type epoxy resin, and the biphenyl type epoxy resin can be reacted with the phosphorus-containing phenolic resin so that an interpenetrating polymer network structure can be formed. In this way, a cured product has excellent ionic migration resistance and has high flexibility and high heat resistance. The invention further relates to a cover film prepared from the halogen-free resin composition, the excellent ionic migration resistance is achieved, and dendritic crystals can be avoided during ionic migration resistance testing.

The invention provides a method for preparing all-Inorganic perovskite films. The method include steps of 1) using temperature control technology and dissolving PbX<2> and CsX(X=Br, Cl, I) powder in an organic solvent under certain temperature to obtain a mixed solution; 2)spin coating the mixed solution on a substrate; and 3) standing the spin coated substrate for a while to obtain an all-Inorganic perovskite film, wherein the step 3) superfluous organic solvent on the surface of the film is removed through a vacuum-pumping method. The method is simpler and easier for operation than a conventional annealing film drying method, and the coverage rate of the obtained perovskite film is greater (approaching to 100%). The particles are smaller, and the performance of an electroluminescent device is better. The technical is simple, and the cost is low. Mass production of all-Inorganic perovskite electroluminescent device is facilitated.

The invention discloses preparation of organic solvent slow release system and its application in enzyme catalysis reaction. It is formed by multi-hole solid matter and liquid state organic matter. The saturated solid matter reacts with vegetable oil under immobilization lipase and solvent at 30 centigrade degree for 12hr. Its product biological diesel oil yield can reach above 90%. Meanwhile the reclaimed immobilization lipase still holds high catalysis energy.

The invention relates to an electrolyte for a ternary cathode material lithium ion battery. The electrolyte comprises a lithium salt, organic solvent and an additive, wherein the lithium salt is an imidodisulfuryl fluoride lithium salt of which the concentration is greater than 1 mol/L; the organic solvent comprises cyanogen carboxylate and other non-water organic solvent; the addition mass of the cyanogen carboxylate is 5-35% of the total mass of the organic solvent; the cyanogen carboxylate is a combination of one or more selected from the following structural formulae in the specification; and at least one of R1 and R2 is a cyanogen radical or a cyanogen radical containing group. By using the electrolyte provided by the invention, the cycle performance of the ternary cathode material lithium ion battery at normal temperature can be stabilized, the aging and swelling phenomena of the ternary cathode material lithium ion battery under high-temperature conditions can be inhibited, and the internal resistance of the ternary cathode material lithium ion battery is reduced.

The invention relates to a preparation method of carboxyl-terminated hyperbranched polyester modified organic silicon resin. The method comprises the following steps of: after heating 40 to 60 weight percent of carboxyl-terminated hyperbranched polyester, 1 to 10 weight percent of 3-glycidoxypropyltrimethoxysilane, 30 to 50 weight percent of organic silicon resin and a cross linking catalyst of which the weight percent is 1 to 10 percent of that of the carboxyl-terminated hyperbranched polyester for 1 to 3 hours at the temperature of 110 to 130 DEG C, warming to the temperature of 150 to 180 DEG C and heating for 1 to 3 hours; and finally, reducing the temperature to the room temperature and adding an organic solvent to regulate the solid content to the range of 60 to 70 percent so as to obtain the carboxyl-terminated hyperbranched polyester modified organic silicon resin. The method combines the advantages of the carboxyl-terminated hyperbranched polyester with the organic silicon resin and excellent heat resistance, excellent metal adhesion, low surface energy, excellent boiling resistance and excellent acid resistance are obtained. The resin prepared by the method disclosed by the invention can be used for preparing a coating with high temperature resistance and low surface energy.

The invention discloses a method for preparing a 2-iodine amyl -2-ene-1,4-diketone derivative by adopting visible light catalysis. The method comprises the steps of adding allene, perfluorobutyl iodide, an additive and a photocatalyst as shown in a formula (I) to an organic solvent at the molar ratio of 1:(1-2):(1-2):(0.005-0.1), stirring under the conditions of an oxygen atmosphere, visible light illumination, room temperature and ordinary pressure for 10-20h, carrying out post-treatment on a reaction liquid to obtain a 2-iodine amyl -2-ene-1,4-diketone derivative as shown in a formula (II), wherein the additive is NaI, NH4I or KI; the organic solvent is ethanol, dichloromethane, benzene, methylbenzene, tetrahydrofuran or acetonitrile; the photocatalyst is selected from one of the following components: Ir(ppy)3, Eosin Y, Rose Bengal, [Ir(dF-CF3-ppy)2(dtbbpy)]PF6, [Ir(ppy)2(tbbpy)]PF6, Ru(bpy)3(BF4)2. The method is mild in reaction condition, simple in operation, high in selectivity and good in yield; a substituent group can be expanded; and visible light catalysis is adopted, so that the method has the characteristics of being free of pollution and environment-friendly. The formulas are as shown in the specification.

The invention relates to a preparation method for a super-hydrophobic/super-oleophylic loofah sponge fiber and an application thereof. The method comprises the following steps: pretreating loofah sponge fiber with sodium hydroxide and hydrogen peroxide and standing by; taking a certain amount of polyurethane adhesive and gas-phase nano-silica and adding into an acetone solvent; ultrasonically dispersing for 2-4 hours, thereby acquiring an acetone dispersion liquid; adding the pretreated loofah sponge fiber into the acetone dispersion liquid and ultrasonically dispersing for 2-10 hours; and drying in an oven, thereby acquiring the super-hydrophobic/super-oleophylic loofah sponge fiber used for effectively separating oil or organic solvent from water mixture. The preparation method provided by the invention is simple and quick; the used raw materials are economical, easily acquired and easy to degrade; the virulent fluorine-containing surfactant is not required; the prepared super-hydrophobic/super-oleophylic loofah sponge fiber has higher stability, excellent super-hydrophobic property and efficient oil water separation capacity; and besides, the prepared super-hydrophobic/super-oleophylic loofah sponge fiber has excellent strong acid resistance, strong base resistance, high salinity resistance, high temperature resistance and extensive social benefit and economic benefit.

The invention provides a preparation method for amorphous tofacitinib citrate. The preparation method is simple, can easily obtain high-purity amorphous tofacitinib citrate, and is suitable for industrial application. The preparation method includes the following steps: under the temperature range between 30 DEG C and 50 DEG C, organic solvent is used for dissolving tofacitinib citrate, so that solution is produced, water which is 15 DEG C to 25 DEG C is added into the solution, so that precipitate is produced, the precipitate is put in the environment of 15 DEG C to 25 DEG C for 4 to 24 hours, and the amorphous tofacitinib citrate is then recovered.

The present invention provides a temperature sensitive paint for low-temperature use which shows durability at low temperatures, has a high light emission intensity, and makes it possible to perform precise temperature measurements of surface temperature fields by applying the paint to the surface of an object and measuring the light emission even in cases where the measurement distance is long in, for example, a large cryogenic wind tunnel or the like. The temperature sensitive paint for low-temperature use contains a ruthenium complex having a high light emission intensity as a temperature sensitive luminophore, a urethane type polymer as a binder, and an alcohol organic solvent as a solvent. Use of an alcohol organic solvent makes it possible to dissolve a temperature sensitive luminophore at a high solubility and to increase the light emission intensity by raising the temperature sensitive luminophore concentration in the coating film, so that more precise temperature measurements can be performed. By using the urethane type polymer having the durability at low-temperature, it is possible to obtain durability where no cracks occur at low temperatures even when the film thickness is increased. Therefore, adjustment of the light emission intensity and surface treatment such as surface polishing and the like can be performed by using this temperature sensitive paint for low-temperature use.

The invention relates to 1,4-di(2,4-diamino phenoxy) benzenoid form high-temperature epoxy adhesive and a preparation method thereof. The adhesive consists of a component A and a component B in a mass ratio of 1:1-2, wherein the component A is a co-polymer formed by the reaction between 1,4-di(2,4-diamino phenoxy) benzene and epoxy resin; and the component B is a homogeneous transparent solution which has the solid content being 15-30 percent and is formed by the reaction between 1,4-di(2,4-diamino phenoxy) benzene and binary acid anhydride in strong polar aprotic organic solvent and toluene. The preparation method comprises the following steps of stirring and uniformly mixing the component A and the component B at room temperature in a mass ratio of 1:1-2. The preparation process is simple, and the adhesive is excellent in comprehensive performance, so that the adhesive can be widely applied to adhesion among steel, copper, aluminum and other metals, as well as ceramic, glass, resin-based composite materials and other base materials, and has an excellent industrial prospect.

A toner including a mother toner comprising a binder resin and a calixarene having a halogen group, and a charge controlling agent having a halogen group that is present on a surface of the mother toner. The ratio of halogen ion to carbon ion on a surface of the toner is from 0.01 to 0.5, when determined by TOF-SIMS. The toner can be prepared by preparing a first liquid by dissolving or dispersing toner components including a calixarene having a halogen group and a binder resin and/or a precursor of the binder resin in an organic solvent; preparing a second liquid by emulsifying or dispersing the first liquid in an aqueous medium; removing the organic solvent from the second liquid; preparing a third liquid by washing the second liquid from which the organic solvent is removed; and adding a charge controlling agent having a halogen group to the third liquid.

The water solution of bee glue includes the following steps: mixing bee glue and 95 % concentration alcohol solution via stirring, adding to water at 50-100 deg.c to obtain mixed water solution of bee glue and alcohol with alcohol content of 20-60 %, cooling to room temperature, letting stand and filtering; recovering alcohol and filtering to obtain filtrate; repeated alcohol dissolving and filtering of the filter residue and deposited matter to obtain filtrate; merging filtrate, concentration at 80 deg.c or adding water to density of 1.01-1.04, cooling, filtering to obtain the water solution of bee glue. The alcohol dissolving and water extracting process is simple, and the water solution of bee glue has high flavone content, no organic solvent and additive, low preparation cost and good biological effect. The water solution of bee glue may be used in preparing products for lowering blood sugar, lowering blood fat, resisting inflammation and regulating immunity.

Process for treating spent nuclear fuel (SNF) to make mixed metal oxides of UO₃ and PuO₂ to prevent nuclear proliferation. The process comprises the steps of (1) dissolving spent nuclear fuel in an acidic solution in the presence of an agent that reduces Pu⁺⁶ to Pu⁺⁴ and an agent that oxidizes Pu⁺³ to Pu⁺⁴; (2) extracting U⁺⁶ and Pu⁺⁴ from acidic solution with an organic solvent comprising a ligand that binds U⁺⁶ and Pu⁺⁴ and which is soluble in the organic solvent; (3) jointly extracting U⁺⁶ and Pu⁺⁴ from the organic solvent with an acidic aqueous solution; and (4) precipitating a mixture of U⁺⁶ and Pu⁺⁴ by adding a carboxylic acid to the acidic aqueous solution. The U⁺⁶ and Pu⁺⁴ precipitate is then be calcined to form a mixed metal oxide of UO₃ and PuO₂. Additional steps can result in the formation of a mixed metal oxide of UO₃, PuO₂ and NpO₂ as well as the removal and isolation of technecium from the SNF.

The present invention relates to a new process of synthesizing conductive polymers from monomers substituted with amine group. The process provides simple synthesizing steps for the conductive polymers without using other additives such as stabilizers or emulsifiers. The conductive polymers synthesized according to the present invention have highly enhanced solubility in common organic solvents and electrical conductivity compared to conventional conductive polymers. Therefore, the conductive polymers synthesized according to the present process can be utilized in applications that require high electrical conductivity, for example an electromagnetic interference shield or a transparent electrode of thin film, as well as in specific applications such as various conductive films, fibers, polymer blends, battery electrodes or conductive etch mask layers.

A method of making an intermetallic negative electrode for an electrochemical cell. One or more metal salts is dissolved in an organic solvent forming a solution to which is added a metal reducing agent to form an intermetallic compound. Thereafter, the intermetallic compound precipitates and is separated and formed into an electrode. The electrodes are useful in electrochemical cells and batteries.

The invention discloses a rapid and high efficiency chlorogenic acid and galuteolin in honeysuckle flower extraction method and a HPLC quantitative analysis method, and which comprise the following steps: superhigh pressure extraction and quantitative analysis. Superhigh pressure extraction comprises the steps as follows: firstly crushing dried honeysuckle flower and filtering by a sieve with 60-80 meshes, adding water or ethanol, methanol and n butanol organic solvent into the honeysuckle flower powder according to 1:10-1:100 solid liquid ratio, mixing and sealing, immersing at normal temperature, placing the mixture into a high pressure container, leaching with pressure at 20-60 DEG C. for 1-5 min, relieving pressure, carrying out centrifugation of extract product and obtaining the honeysuckle flower extract. Quantitative analysis: after centrifugation, diluting 2ml of the obtained supernatant to 10 ml with distilled water in a volumetric flask, refrigerating for standby. The chlorogenic acid and galuteolin in honeysuckle flower are extracted by a superhigh pressure technology and are carried out by a content determination, and the invention has the characteristics of high recovery rate, short extraction time, small solvent amount, simple operation, accuracy, good repeatability, no pollution, safety, low energy consumption, etc.

The invention provides a low-temperature electrolyte for a lithium iron phosphate battery. The low-temperature electrolyte is prepared from the following raw materials: an electrolyte lithium salt, an organic solvent and a low-temperature additive, wherein the low-temperature additive is at least one of triethanolamine, tetraethylammonium tetrafluoroborate, 12-crown (ether)-4, 15-crown (ether)-5 and 18-crown (ether)-6; and the mass of the low-temperature additive is 0.1%-5% of total mass of the electrolyte. By the low-temperature electrolyte, the low-temperature performance of the battery is effectively improved.

A method for forming an ultrathin-wall porous metal pipe fitting belongs to the field of powder metallurgy production and includes the steps: firstly, adding monomers and crosslinking agents into organic solvents or deionized water according to the volume ratio of 1-120:1 to prepare pre-mixed liquor with the concentration of 5-50wt%; secondly, mixing metal powder and pore-forming agents with the prepared pre-mixed liquor of a stable gel system, adding dispersing agents accounting for 0.05-5wt% of the mass of metal powder, adjusting pH (potential of hydrogen) and stirring or ball-milling the mixture for 2-10h to prepare suspending slurry with fine flowability; thirdly, adding 0.1-3.5wt% of catalysts and initiating agents, evenly stirring the mixture, filling the mixture into a large-size mould in a complicated shape after vacuum degassing, demoulding after solidifying the mixture for 30s-30min at the temperature of 30-90 DEG C, and drying a blank in vacuum or protective atmosphere; and finally sintering the blank into a pair. The method can be used for preparing the ultrathin-wall porous metal pipe fitting, so that the problem of easiness of breakage in pressure forming is avoided. By adjusting the content and the granularity of the pore-forming agents, the porosity and the pore size of the part are controlled, and the method is simple in process and low in production cost.

The invention discloses a lithium-sulfur battery electrolyte with high safety and high performance. The electrolyte is prepared from three components as follows: 0.1-10 mol/L of lithium salt, a fluoro cyclic and/or chain-like carbonate ester compound organic solvent and other functional additives. The electrolyte is quite stable for lithium polysulfide, and the problem about reaction of common carbonate ester solvents and lithium polysulfide is solved; meanwhile, the fluorine element has a good flame retardant property and the safety performance of the lithium-sulfur battery adopting the electrolyte can be remarkably improved.

The invention relates to a method for extracting unsaturated fatty acids from eucalyptus leaves. An organic solvent is used for extraction. Unsaturated fatty acid crude extracts are obtained by low-temperature crystallization treatment after dissolution, and more than 7 percent of unsaturated fatty acid component is obtained by CO2 critical extraction. The extraction method is simple, convenient, low in cost, stable in process and high in extraction efficiency. The unsaturated fatty acids in the eucalyptus leaves cotain polyunsaturated fatty acids such as linoleic acids and linolenic acids, are natural extracts, have the effects of resisting bacteria, resisting oxidation, depressing blood fat, lowering cholesterol, improving memory, suppressing tumors and the like, and can be widely applied to the fields of feeds, cosmetics, foods, biochemical engineering, even medicine and the like.

The present invention is configured to: form, on a substrate, a neutral layer having an intermediate affinity to a hydrophilic polymer and a hydrophobic polymer; form a resist pattern by performing exposure processing on a resist film formed on the neutral layer and then developing the resist film after the exposure processing; perform a surface treatment on the resist pattern by supplying an organic solvent having a polarity to the resist pattern; apply the block copolymer onto the neutral layer; and phase-separate the block copolymer on the neutral layer into the hydrophilic polymer and the hydrophobic polymer.

The invention discloses a method for producing microbial grease by fermenting inulin serving as a raw material. The method comprises the following steps of: hydrolyzing the inulin raw material by using inulase to prepare an inulin hydrolysate, adding yeast extract, peptone, potassium dihydrogen phosphate and MgSO4.7H2O into the inulin hydrolysate to obtain an inulin hydrolysate fermentation medium, inoculating trichosporon cutaneum seed liquid to the fermentation medium, performing fermentation culture, obtaining microbial grease bacteria by centrifuging after culture, drying the microbial grease bacteria, extracting the grease in the cells of the dried microbial grease bacteria by using an organic solvent chloroform-methanol method, and thus obtaining the microbial grease. By the method for producing the microbial grease by using the inulin, the grease raw material source of biodiesel is greatly expanded, the cost of the grease raw material for the biodiesel is remarkably lowered, and meanwhile, the problem of low value utilization of jerusalem artichoke tubers in the prior art is solved.

According to embodiments of the invention, a glass paste composition for a dye sensitized solar cell includes a glass frit, an organic binder, and an organic solvent.

The invention discloses a self-assembly starch nanoparticle and a preparation method thereof. According to the method, octenyl succinic acid starch is dissolved in dimethyl sulfoxide solution to obtain a solution A; the degree of substitution of the octenyl succinic acid starch is 0.4-1.5; distilled water is added into the solution A to obtain an octenyl succinic acid starch/ dimethyl sulfoxide/ water mixed solution system; the volume ratio of solution A to distilled water is 0.5:1 to 2:1; the mixed solution is transferred to a dialysis bag, the dialysis bag is put in dialysate distilled water for dialysis; and impurities in the dialyzed suspension are filtered by use of a microporous filter membrane. The self-assembly starch nanoparticle is free of an emulsifier and organic solvent residue, high in ball forming rate, has a particle size effectively controlled between 50-200nm, and can be used as a carrier for drug and cosmetic active ingredients.