1237results about How to "Short synthesis time" patented technology

The invention relates to a synthetic process of a chemical substance, and particularly relates to a synthetic method for synthesizing (E)-2-[2-(6-chloro pyrimidine-4-yloxy)phenyl]-3-methoxy methacrylate and azoxystrobin; the method comprises the following steps: mixing a raw material of 3-(alpha-methoxy)methylene benzofuran-2-(3H)-ketone and potassium carbonate in a toluene solvent, cooling to 0-10 DEG C, adding sodium methoxide, reacting for 0.4-0.6 hours; adding 4,6-dichloropyrimidine and a catalyst of DABCO, reacting for 1-2 hours, filtering to remove inorganic salts, washing the filtrate with water, performing distillation to recover toluene; adding a catalyst of potassium bisulfate into the distillation residues of the above reaction, heating to 132-145 DEG C in a reduced-pressure condition for reaction; directly adding salicylonitrile to synthesize azoxystrobin or performing toluene dissolution, water washing, solvent recovery, recrystallization and filtration to obtain an intermediate. The production and synthesis of (E)-2-[2-(6-chloro pyrimidine-4-yloxy)phenyl]-3-methoxy methacrylate by the production process of the invention has high yield, and simple operations, and the used raw materials and processes are routine reagents and methods.

The invention relates to a synthesis method of semaglutide. According to the method, a semaglutide product is synthesized by adopting a solid-liquid phase combination method, and three fragments are simultaneously synthesized in a synthesis manner of 16+6+9 fragments, and therefore, the synthesis time of the product is greatly shortened; moreover, by step-by-step analysis on synthesis factors of His-Ala-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly, Gln-Ala-Ala-N6-[N-(17-carboxy-1-oxoheptadecyl-L-gama-glutamyl [2-(2-aminoethoxy) ethoxy] acetyl [2-(2-aminoethoxy) ethoxy] acetyl]-Lys-Glu-Phe, Ile-Ala-Trp-Leu-Val-Arg-Gly-Arg-Gly-OH and the like, the difficulty in synthesis of a peptide sequence in solid-phase synthesis is reduced, the problem of batch amplification in the solid-phase synthesis is solved, and the synthesis efficiency is improved; and as liquid-phase fragment synthesis is adopted, the purification difficulty is effectively reduced, and the production cost is greatly lowered. The synthesis method disclosed by the invention has the advantages that the synthesis time can be shortened by 40%, the cost of materials is lowered, the generation quantities of deletion peptide and hybrid peptide are decreased, and the synthesis method is suitable for industrial large-scale production.

The invention discloses a synthesizing method of dielectric carbon material through hard moulding method, which is characterized by the following: sintering the composition of silica/molder or saccharose directly; removing silica to obtain dielectric carbon; shortening the synthesizing time with high sequence; fitting for manufacturing.

The invention discloses a process of coprecipitation-combustion synthesis of nickel cobalt manganese lithium carbonate. (1) Utilizing acetate or nitrate of nickel, cobalt, and manganese as transition metal source and ammonia as complexing agent and utilizing H2C2O4, (NH4)3C2O4, (NH4)2CO3 or NH4HCO3 as precipitator, compound carbonate contained Ni-Co-Mn or oxalate precursors is synthesized by coprecipitation method. (2) Directly drying the compound carbonate containing Ni-Co-Mn or the suspension liquid of the oxalate and adding lithium nitrate or lithium acetate or a small quantity of water or ethanol to adjust into rheological phase. (3) Laying the materials in rheological phase in an electric stove to perform burning synthesis reaction, wherein the electric stove heats the materials in rheological phase at temperature of 400-600DEG C and then keeps constant temperature. (4) Temper drawing the reaction product with temperature of 600-1200DEG C, and anode active materials of lithium ion battery LiNixCoyMn1-x-yO2 is obtained. The invention has the advantages of simple technique, easy operation, saving water and energy and environment-friendliness, further, the synthetic material is provided with the shape of sphere or near-sphere, high specific capacity and fine cycle performance.

A low-temperature straight-welding polyurethane wire enamel without pin hole is carried out by preparing hydroxide radical component, preparing enclosed component and formulating wire enamel. It can be used for extended or bended zero pin hole below 340degree.

The invention discloses a high-temperature solid-phase synthesis method of a one-dimensional nano-sodion cell anode material NaxMnO2. The high-temperature solid-phase synthesis method comprises the following steps of 1, dissolving a sodium salt and a manganese salt in water according to a mole ratio of sodium to manganese of 0.44-0.56 to obtain a solution I, 2, dissolving citric acid in water to obtain a solution II, wherein a mole ratio of citric acid to the total metal ions is in a range 0.5-1, 3, dropwisely adding the solution I into the solution II and carrying out stirring for 10-60min, 4, carrying out heating evaporation on the mixed solution at a temperature of 60-90 DEG C to remove a solvent, heating the residues at a temperature of 120 DEG C for 6-24h, cooling the heated residues to a temperature of 10-30 DEG C, and grinding the cooled residues into powder, 5, heating the powder at a temperature of 350-500 DEG C for 3-10h, cooling the powder to a temperature of 10-30 DEG C, and grinding the cooled powder into fine powder, and 6, heating the fine powder at a temperature of 800-950 DEG C for 10-45h, and carrying out cooling to obtain the one-dimensional nano-sodion cell anode material NaxMnO2. The high-temperature solid-phase synthesis method has short synthesis time and a high yield in unit time. The one-dimensional nano-sodion cell anode material NaxMnO2 has uniform, dispersive, thin and long product morphology and good electrochemical properties (of a specific discharge capacity of 114mA.h/g at 0.1C charging-discharging multiplying power).

This invention belongs to battery field, which relates to ultra-micro compound lithium iron phosphate cathode material with high density and its fabrication method. Said cathode material is prepared by mixing iron salt, lithium salt and phosphates at a P/Li/Fe ratio of 1-1.1:1-1.1:1-1.1, adding conductive additives containing dopant element and carbon-bearing organic compound, adding organic acid as carrier, adjusting pH, controlling solution temperature in reactor to form sol, separating the sol to obtain nano-precursor and placing it into micorwave oven under protection of inert gas, and obtaining the final product. It is easy to control the chemical component, phase composition and particle size distribution. The conductive additive can be well-distributed. The method also has the advantages of short reaction time, low energy consumption during synthesis process and low cost. The obtained composite has high purity and good compatibility with electrolyte, excellent conductive property and charge and discharge property with large current, and good structure stability,thermal stability and cycle performance.

The invention discloses a synthetic resin adhesive for an E0/E1 grade flakeboard, which is melamine modified urea-formaldehyde resin; formaldehyde with the concentration of 48 percent in mass percentage is adopted as a raw material; the adhesive comprises the following reaction materials in percentage by mass: 4.0 to 5.0 percent of melamine, 43.0 to 45.0 percent of urea, 48.0 to 51.0 percent of formaldehyde, 1.00 to 1.10 percent of addition agent, 0.20 to 0.22 percent of polyvinyl alcohol and proper acid and alkali; the total molar ratio is between 1.08 and 1.11; and the materials are reacted and synthesized, thereby preparing the adhesive. The high-concentration formaldehyde is adopted as the raw material; the adhesive has excellent bonding strength, proper curing time, good storage stability and the free formaldehyde content of between 0.06 and 0.08 percent; with the adhesive, the E1 and E0 flakeboard with excellent quality can be stably produced; and the adhesive has the advantages of low adhesive application amount, strong process adaptability, rapid curing, etc.

The invention relates to a preparation method of a NiAl intermetallic base solid self-lubricating composite material containing Ti3SiC2 and C binary composite lubrication phase and wild phase TiC. The NiAl intermetallic base solid self-lubricating composite material is prepared from Ni powder, Al powder, Mo powder, Nb powder, Fe powder, B powder and Ti3SiC2 powder, wherein the molar ratio of Ni: Al: Mo: Nb: Fe: B=48: 50: 1: 1: 0.5: 0.02, and the addition quantity of the Ti3SiC2 powder is 5-20 weight percent of the total weight of the Ni powder, the Al powder, the Mo powder, the Nb powder, theFe powder and the B powder. The NiAl/ Ti3SiC2-C/TiC intermetallic base solid self-lubricating composite material synthesized by the method has novel component design (intermetallic matrix+ composite lubrication phase+ wild phase), high density, good tribological properties and stable technological parameters. The preparation process is fast and simple, and the method is easily operated and is suitable for preparing NiAl intermetallic base solid self-lubricating composite materials with high performance.

An embodiment of the invention discloses a data backup method and a related device to improve efficiency in recovering data to near time points. The method in the embodiment includes: acquiring information of a variable data block which is a data block changed relative to a front backup; storing data corresponding to the variable data block in a backup server, and enabling an omnidirectional image generated in first-time backup to point at all updated data blocks, wherein the first-time backup is an omnidirectional backup; and directing a first backup set to the omnidirectional image, wherein the first backup set is a backup set corresponding to the current backup.

The invention relates to a preparation method for making lithium ion battery cathode materials of LiFePO4/C by using the reducing agent and inorganic salts of iron source, phosphorus source, lithium source, carbon source and so on as raw materials. Adopt the combining method of sol-gel and microwave treatment and prepare ultrafine particles of LiFePO4 and carbon coat the particles at the same time. On this basis, change the property of LiFePO4/C by metal doping of Cr3 plus , Co3 plus . By processing with industrial microwave oven of high power, the invention shortens processing time greatly, increases the yield remarkably, reduces material cost and energy loss, simplifies the processes, improves the efficiency of industrial production of lithium ion battery and is convenient for implementation in industry. Take it as cathode materials of lithium ion battery with high-rate discharge. The invention raises conductivity of lithium iron phosphate and at the same time improves charge discharge capacity and cycle numbers by carbon coating and metal element doping.

The invention discloses a method for preparing a polycarboxylic acid grafted copolymer superplasticizer. In the method, the preparation is implemented at the low temperature of 5-30 DEG C; a used initiating system is a complex initiating system which adopts the combination of one initiator I and various reducers R, or one reducer R and various initiators I or various initiators I and various reducers R, wherein the initiator (s) I is (are) selected from hydrogen peroxide, persulfate salt LS2O8 and a water-soluble azo initiator W, and the reducer (s) R is (are) selected from ascorbic acid and certain kinds of inorganic salt. The preparation method is simple, excellent in repetition stability and low in cost, does not require heating, and avoids toxicity and pollution; the prepared superplasticizer is high in water-reducing rate, and excellent in adaptability and slump-retaining capability, thereby being suitable for popularization and application.

The invention discloses a method for rapidly synthesizing aluminum phosphate salt polymeric compound. The method is characterized in that the mixture of phosphoric acid and aluminum hydroxide reacts and the mixture is synthesized under microwave condition. The method comprises the following steps: the phosphoric acid and the aluminum hydroxide are added with water to be mixed and stirred uniformly according to mol ratio; the mixture after being stirred uniformly is put into a microwave oven, and the defrosting and heating mode is selected to radiate the mixture; 750 W is selected to heat the mixture; white aluminum tripolyphosphate powder is gotten through hydrating, drying and grinding. The aluminum tripolyphosphate powder product is put into the microwave oven again to be radiated with 900 W power, and aluminum metaphosphate powder is gotten. The method integrates the reaction and polymerization of the prior art, reduces the composition time, saves the energy and the equipment, and improves the production efficiency. Because of the penetrating action of the microwave, the composition is not limited by the material quantity, and the synthetic ratio of the aluminum tripolyphosphate and the aluminum metaphosphate is improved. Related equipment can be adopted during the industrial production to realize continuous scale production.

The invention discloses a method for rapidly preparing a gold nanorod, which belongs to the technical field of a nano material, and solves the problem that the existing gold nanorod seed induction growth method is long in consumed time. The method is characterized in that cationic surface active agent chloride quaternary ammonium salt is used as a protective agent, gold seeds which are obtained by reducing sodium borohydride through the reducing agent sodium oleate, ascorbic acid are added into a chloroauric acid solution under the assistant effect of ions and silver ions to obtain gold nanorods. According to the method, the synthesis of the gold nanorods can be completed in 15 minutes, so that not only can the synthesis time of the gold nanorods be greatly shortened and a material base be provided for the real application of the gold nanorods, but also the yield of the gold nanorods is high, and fewer spherical particles exist.

The invention provides a DNA tetrahedral nano-structure signal probe. The signal probe is a DNA signal probe having a tetrahedral base, wherein the signal probe is formed by self-assembling single-stranded DNA of a DNA recognition sequence extending from 5' end and single-stranded DNA of three chains with 5' ends modified with labeled molecule; the DNA recognition sequence extends from a vertex of the tetrahedral structure, the DNA recognition sequence is complementarily combined with to-be-detected target DNA or miRNA, and other three vertexes, due to the labeled molecules, are specifically combined with modified signaling modules, so as to achieve multi-signal amplification. The signal probe disclosed by the invention greatly improves the sensitivity of the target DNA or miRNA subjected to electrochemical detection, and a limit of detection can be as low as 1fM.

The invention relates to method for preparing toluene selective disproportionate catalyst using small crystallite ZSM-5 zeolite, which comprises the steps as follows: mixing molecular weight siloxane and aluminum salt for hydrolysis reaction for 1 to 24 hours under acid conditions with the presence of a template; adjusting the pH value of the mixture using inorganic base; performing hydrothermal crystallization for 10 to 24 hours at 160 to 200 DEG C; preparing small crystallite ZSM-5 zeolite with the crystalline grain of 100 to 500nm; forming the small crystallite zeolite using adhesive; preparing hydrogenous zeolite through ion exchange; adopting tetraethyl orthosilicate chemical liquidoid silica deposition for modification, so as to obtain a shape selective catalyst with high activity, high selectivity to xylene and low side reaction. The catalyst has the advantages of simple reparation technology, low cost, high reactivity, and wide application prospect.

Disclosed is a combustion synthesis method of sub-micron titanium carbide nitride powder which comprises proportioning base raw material and thinning agent, the base material includes titanium oxide 55-62%, magnesite powder 20-40%, carbon black 0-20%, the thinning agent is carbon azotized titanium powder, the weight of the thinning agent is 0-2.3 times of the base raw material. The preparation process comprises high temperature drying, ball grinding, mixing homogeneously, cooling down with circulating water, reacting at the presence of nitrogen, cooling down and acid-washing, water scrubbing, filtering and drying to obtain the end product.

The invention discloses auxiliary-addition-free polyphenylene sulfide resin industrial synthetic process. The formula of raw materials required in the auxiliary-addition-free polyphenylene sulfide resin industrial synthetic process is as follows: the mole ratio of sodium sulfide to sodium hydroxide to santochlor to N-methyl-2-pyrrolidinone is 0.93-1.15 to 1.00-1.28 to 1.98-2.98 to 1.18 to 1.48. The industrial synthetic process mainly comprises the following steps: firstly, in a sodium hydrosulfide dehydration treatment stage, a pipeline filter is adopted to filtrate a sodium hydrosulfide solution to treat mechanical impurities in the solution, then a sodium hydroxide solution with the concentration 84 mol percent is added in the formula for chemical treatment on the sodium hydrosulfide; secondly, in the condensation polymerization stage, anaerobic deionized water is added to further appropriately adjust the molecular weight and molecular weight distribution coefficient of synthesized polyphenylene sulfide resin; thirdly, deionized water is adopted for repeatedly scrubbing for 3 to 6 times, and finally, the target product of the auxiliary-addition-free polyphenylene sulfide resin industrial synthetic process provided by the invention is obtained. The resin in the obtained product of the auxiliary-addition-free polyphenylene sulfide resin industrial synthetic process is low in polydispersity index and high in oxygen index, and has an excellent electrical insulation property.

The fast synthesis process of strong acid-type ZSM-5 molecular sieve includes compounding solution A with silicon source, template agent and one half of deionized water in certain proportion; compounding solution B with aluminum source, inorganic acid and the other half of deionized water in certain proportion; adding dropwise solution B to solution A to prepare guiding agent; compounding solution C with silicon source, template agent and one half of deionized water in certain proportio; compounding solutio D with aluminium source, inorganic acid and the other half of deionized water in certain proportion; adding dropwise solution D to solution C and adding guiding agent in the amount of 5-10 vol% of total amount. The process has advantages of short synthesis period and storing acidity.