128results about How to "Has industrial value" patented technology

The invention discloses a synthesis method of synthesizing florfenicol. The synthesis method comprises the following steps: L-threo-(p-(methylsylfonyl) phenyl) serine ethyl ester which is used as raw material is processed by the protection by a protecting group, configurational transition, hydrolyzation, acetylation, re-protection, deoxidation, fluorination, and pre-hydrolyzation, so that the florfenicol is obtained, wherein, the protecting group R is one of benzoyl chloride, phthalic anhydride, cyanophenyl, and allyl compounds; the configurational transition is performed when sodium alcoholate or sodium methoxide exists. The raw material which is used in the method is a byproduct which is generated during the process of preparing thiamphenicol, is easy to get in the market, and is inexpensive; the technological operation is simple, the cost is low, the yield rate is high, and the synthesis method has industrialized value.

The invention relates to a preparation method for cuprous oxide micron/nano crystal with controllable morphology, relating to the preparation method for the cuprous oxide micron/nano crystal. The invention mainly solves the technical problems of high cost and environmental pollution in the preparation process of the micron/nano cuprous oxide. The method comprises the following steps of: 1, dissolving copper salt into ultrapure water, pouring lactic acid, continuously stirring, regulating a pH value, cooling to the temperature of 25 DEG C, keeping constant volume, measuring the pH value, and obtaining solution A; 2, moving the solution A to a hydrothermal reaction kettle, sealing the reaction kettle, putting the hydrothermal reaction kettle into a drying oven, keeping the temperature, naturally cooling to a room temperature, centrifugally washing by using the ultrapure water, centrifugally washing by using anhydrous ethanol, transferring the reaction kettle onto watch glass, and drying the reaction kettle in the drying oven; and thus obtaining the cuprous oxide micron/nano crystal. The preparation method for the cuprous oxide micron/nano crystal with the controllable morphology has the advantage of simpleness and practicability, simple equipment operation, low raw material price, easy synthesis, less pollution to environment and high synthetic concentration, the problem of the cost of the morphology control and industrialized large-scale synthesis in the prior art is solved, and the industrial production is facilitated.

The invention relates to a method for treating titanium tetrachloride-containing waste liquid. The waste liquid comprises titanium tetrachloride, an organic solvent and halogenated alkoxy titanium and/or titanium alkoxide. The method comprises a step (1) of contacting the titanium tetrachloride-containing waste liquid with water to perform hydrolysis; a step (2) of distilling the hydrolysed waste liquid, and after an oil phase is evaporated by 20 volume% or above, a titanium-containing compound is collected from remaining materials. Through the method, resource treatment of the polyolefin production waste liquid can be performed simply, not only can the industrial waste treatment problem in the polyolefin catalyst production process be solved, but also the polyolefin catalyst production cost is reduced; useful materials in the polyolefin production waste liquid can be recycled to facilitate reutilization, and thus the method has long-term economic and social benefits.

A carried silver catalyst for preparing anhydrous formaldehyde by directly dehydrogenating methanol is prepared by sol-gel method, which includes such steps as mixing ethyl n-silicate with the solution containing soluble Mg salt, dropping it in aqueous solution of inorganosilver salt, generating colloid, aging, drying and calcining. Its advantages are high activity, long service life and low cost.

The invention relates to a graphene/metal composite negative electrode material for a lithium ion battery and a preparation method of the graphene/metal composite negative electrode material. The preparation method comprises the following steps of: preparing a metal electrode with an optical grating structure by chemical etching, preparing graphene/titanium dioxide composite particles by using a redoxchemistry method, depositing the graphene/titanium dioxide composite particles on the metal electrode with the optical grating structure, and carrying out further heat treatment to obtain the graphene/metal composite negative electrode material. According to the graphene/metal composite negative electrode material and the preparation method, the nano titanium dioxide particles are used for modifying the stacking of graphene, and the metal optical grating structure is used as a graphene carrier, so that the graphene can be vertical to a current collector to be arranged into an array; by virtue of the structure, the diffusion distance of lithium ions among graphene sheets is shortened, and meanwhile, the lithium ions can be embedded and withdrawn among the graphene sheets more rapidly; and therefore, the graphene/metal composite negative electrode material has high specific capacity, excellent cycling stability and rate capability when being used as a negative electrode of a lithium ion battery and is hopeful to be used as a negative electrode material, with high energy density and high power density, of the lithium ion battery.

The invention discloses two-component addition type high-fire-retardant silica gel with low compression deformation. The two-component addition type high-fire-retardant silica gel with low compression deformation is formed by mixing a component A with a component B in a mass ratio of 1:1, wherein the component A is composed of the following components in parts by mass: 100 parts of base gum, 0.01-0.05 part of a platinum catalyst and 30-70 parts of a fire retardant; and the component B is composed of the following components in parts by mass: 100 parts of base gum, 1-5 parts of hydrogen-containing silicone oil, 0.01-0.05 part of an inhibiting agent and 30-70 parts of a fire retardant. The invention also discloses a preparation method of the two-component addition type high-fire-retardant silica gel with low compression deformation. The prepared two-component addition type high-fire-retardant silica gel with low compression deformation has the advantages that the fire-retardant grade of the silica gel reaches up to 94V-0 by adding the fire retardant, good physical properties are realized, a compression deformation value is less than 12%, the strength is high, the adhesive property is good, and the storage property is good, so that the two-component addition type high-fire-retardant silica gel with low compression deformation has an industrial value. The preparation method of the two-component addition type high-fire-retardant silica gel with low compression deformation is simple and practicable and is low in cost, thus being applicable to mass production.

The invention discloses a memristor based on a fiber substrate and a preparation method of the memristor. The memristor sequentially comprises a flexible fiber substrate I, an isolation layer I, an upper electrode, a storage dielectric layer thin film, a lower electrode, an isolation layer II and a flexible fiber substrate II from top to bottom. The preparation method of the memristor comprises the following steps of sequentially depositing the isolation layer I and the upper electrode on the surface of the flexible fiber substrate I to denote as a part A; sequentially depositing the isolation layer II, the lower electrode and the storage dielectric layer thin film on the surface of the flexible fiber substrate II to denote as a part B; and allowing the part A and the part B to contact at an arbitrary angle, and forming the memristor at a contact position. The memristor has the characteristics of favorable flexibility and light weight, can be bent, and is beneficial for promoting light-weight development of an electronic product; and the preparation method is compatible with the traditional complementary metal oxide semiconductor transistor (CMOS) process, is simple, is low in cost and high in production efficiency and has industrial value, and the demand for production at a large scale is met.

The invention discloses a method for producing beta-carotene, and a genetically engineered bacterium thereof. The method comprises the following steps: culturing an Escherichia coli genetically engineered bacterium, and obtaining beta-carotene from a fermentation solution, wherein the Escherichia coli genetically engineered bacterium is Escherichia coli containing an exogenous expression vector containing four beta-carotene synthesis genes, and the four beta-carotene synthesis genes are crtE, crtI, crtB and crtY respectively, the Escherichia coli genetically engineered bacterium also contains an expression vector containing four MEP pathway genes, and the four MEP pathway genes are dxs, idi, ispD and ispF respectively. Four enzymes in MEP pathways are over-expressed to construct the MEP pathways with different intensity promoters in order to improve the output of beta-carotene.

The invention discloses an Escherichia coli for producing isoeugenol monooxygenase and a construction method and an application of Escherichia coli. The Escherichia coli is named as BL21 (DE3) IEM-PP, and the preservation number is CGMCC No. 8918. The construction method comprises the steps of amplifying whole genome DNA of soil as a template by a PCR (polymerase chain reaction) technology under the action of PCR primers to obtain fragments of which the lengths are 1438bp, carrying out gel extraction and recovery, purifying and linking with a T-vector pET21 (a) to obtain the recombinant strain BL21 (DE3) IEM-PP cloning vector recombinant plasmid PET21 (a)-IEM. The Escherichia coli can be applied in producing vanillin by the biotransformation of isoeugenol via the recombinant strain.

The invention discloses a polyethylene glycol modifier of aspergillus flavus urate oxidase, wherein polyethylene glycol and the aspergillus flavus urate oxidase are connected through a covalent bond, the subunit of each aspergillus flavus urate oxidase molecule is averagely combined with 2-10 polyethylene glycol molecules, the average molecular weight of the polyethylene glycol molecule is 4-9kd, and the enzymatic specific activity of the polyethylene glycol modified aspergillus flavus urate oxidase is 5.0-10.0U/mg. A preparation method thereof is realized by adopting the following technical scheme: recombinant aspergillus flavus urate oxidase protein with the purity of larger than 95 percent is modified by adopting the activated polyethylene glycol molecule with the average molecular weight of 4-9kd for 0.1-10 hours at the pH value of 5-10 and the temperature of 4-37 DEG C, and the mass ratio of the polyethylene glycol molecule to the aspergillus flavus urate oxidase is 3:1-20:1. The polyethylene glycol modified aspergillus flavus urate oxidase realizes the balance in the aspects of high specific activity, long half life, low immunogenicity, high stability, low cost and the like and has industrialization value.

The invention relates to fine chemistry, particularly ethylation catalyst. With CO and H2 synthesized into ethylation catalyst, it features in the composite oxides MgSiO or TiSiO, the carrier metal being Ni-Cu alloy, forming into Ni-Cu/MgSiO, or Ni-Cu/TiSiO as direct alloy ethylation catalyst for CO and H2. It provides two practical industrial solid accelerant. It can realize direct synthesis of CO and H2, producing 99% ethane product.

The invention provides a method for production of lipstatin through fermentation. The method includes: 1) conducting fermentation culture on the Streptomyces toxytricini used for lipstatin production in a fermentation medium; and 2) after 16-120 hours of the initiation of the fermentation cultivation in step 1), replenishing the obtained fermentation solution with aseptic oxygen-vectors, wherein the oxygen-vectors contain hemoglobin, methyl silicone oil or carbon tetrafluoride. Compared with processes without oxygen-vectors added, the invention makes the fermentation unit of lipstatin improved by more than 15%. At the same time, the method provided in the invention has the advantages of: simple production operation, low requirement for equipment, and low cost, thus being suitable for industrialized production.

The invention provides a compound pot bottom of an aluminum pot, which comprises a magnetic conduction metal plate compounded on the bottom surface of the aluminum pot bottom, wherein an aluminum plate is combined by high temperature and high pressure on the surface of the magnetic conduction metal plate correspondingly combined with the aluminum pot bottom; a plurality of concentric circular convex parts and concave parts are arranged on the upper surface of the aluminum plate at intervals by using the center of the upper surface of the aluminum plate as the center of a circle; and the aluminum on the bottom surface of the aluminum pot bottom is combined with the concave parts by die-casting. The compound pot bottom of the aluminum pot has tight and firm connection, large contact area, good heat conduction effect and low cost, and has certain economical value and industrial value. The invention also provides a manufacturing method of the compound pot bottom.

The invention relates to a kind of 3 substituted 5,6,7,8 tetrahydro-41, 8a methylene-2-ketonaphthalene compound, synthesis method and its application. Said invention provides its structural formula, it is simple, suitable for industrial production, and can be used for synthesizing dihydrogen derivative dihydrospiniferin-1 of marine natural product spiniferin-1.

The invention discloses a method for treating heavy metal wastewater through ion flotation of a nano collecting agent. The method comprises the following steps that a certain quantity of a graphene oxide solution is added into a flotation tank containing the heavy metal wastewater (pH is within 4 to 8) to serve as the ion flotation nano collecting agent, and stirring for reaction is conducted; then, a certain amount of emulsified kerosene is added as a flocculating agent, and stirring is conducted continuously; then, a certain amount of terpenic oil is added as a foaming agent, and stirring isconducted continuously; and finally, inflating is conducted, under hydrophobic acting force, metal pollutant loaded graphene oxide adheres to bubbles and floats upwards to be gathered on a foam layeron the liquid level upper layer to overflow, and thus removing of heavy metal ions and water purifying are realized. The treated wastewater reaches the national industrial wastewater discharging standards. The method is easy and convenient to operate, small in occupied area, low in energy consumption, high in concentration ratio and small in sludge quantity, and has certain industrial value and social benefits.

The invention discloses a preparation method of polyimide resin. The preparation method comprises the following steps: dissolving diamine into an organic solvent and then adding dianhydride for reacting; adding a solid water absorbent for stirring, raising the temperature to 110 to 200 DEG C, introducing nitrogen and continuously reacting for 6 hours or above; then reducing the temperature to be 90 DEG C, separating the solid water absorbent from a reaction liquid in a hot state, reducing the temperature of the reaction liquid to a normal temperature for crystallizing, carrying out solid-liquid separation and drying to obtain the polyimide resin. According to the preparation method of the polyimide resin, disclosed by the invention, a liquid dehydrating agent is substituted with the solidwater absorbent, a production device is simplified, and the problem that a mixed solution is difficult to recover is solved; the solid water absorbent can be recycled and reused, a reaction solvent asfiltrate can be recycled and the technical process is simple; the polyimide resin has an industrialized value.

The invention relates to a reduction state of perylene bisimide and a derivative of the perylene bisimide and a preparation method. Perylene-3,4,9,10-tetracarboxylic acid dianhydride is adopted as a raw material, and the perylene bisimide derivative with the low LUMO energy level and excellent photoelectric property is obtained through a bromination reaction, an amidation reaction and a nucleophilic substitution reaction in a synthesis manner; and then under the condition of the normal temperature, a first reduction potential is applied through an electrochemical method to easily obtain an air stable perylene bisimide radical anion through synthesis. The method for preparing perylene bisimide ionic salt is novel, unique, simple and high in yield and can achieve industrialization, and the effect is good; and materials of this kind have high stability on air in the reduction state, the science difficult problems are solved, and practical application is facilitated.

The invention provides a high-ductility non-heat treatment die-casting aluminum alloy. The high-ductility non-heat treatment die-casting aluminum alloy comprises, by mass: 2-9% of Mg, 0.01-1.0% of Sc,0-1.0% of Si, 0-2.0% of Fe, 0.1-2.0% of Mn, 0-0.5% of Ti and 85.1-97.6% of Al, specifically, Fe and Si are impurity elements; and the aluminum alloy material has both high ductility and excellent mechanical properties. The invention further provides a preparation method of the rare earth aluminum alloy material. The preparation method comprises the steps of batching, component homogenizing, melting, die-casting forming and the like in sequence. The high-ductility non-heat treatment die-casting aluminum alloy and the preparation method of the rare earth aluminum alloy material fill the gaps inthe prior art, are beneficial to realizing large-scale industrial production, and can be used for manufacturing automobile structural parts, supports, automobile body safety parts and the like, and the prepared aluminum alloy product has obvious competitive advantages compared with an existing product.

The present invention provides a pressure reducing apparatus for preparing polyamide.The pressure reducing apparatus comprises a sealed kettle body. The kettle body is provided with a material inlet and a material outlet, wherein the material inlet is formed above the material outlet; inside the reactor body is provided with a material coil connected with the material inlet and the material outlet; the material coil is divided into a plurality of sections; the diameters of the same sections of the material coil are the same; the diameters of different sections of the material coil are gradually increased from the material inlet to the material outlet. The present invention further provides a pressure reducing method as well as production equipment and a production method for polyamide 5X. The pressure reducing apparatus provided by the present invention is capable of effectively separating water from a material, and is good in separation effect. The production equipment and the production method for polyamide 5X provided by the present invention are specific to polyamide 5X, are capable of producing many types of polyamide 5X products, and can broaden the production and application ranges of the polyamide 5X products.

The invention discloses a preparation method of (R)-(+)-9-(2-hydroxypropyl) adenine, which is a key intermediate for tenofovir disoproxil fumarate. The method comprises the following steps: (1) reacting 6-chloropurine and bromopropanone to obtain 6-chloro-9-(acetonyl)-purine; (2) performing an asymmetric hydrogenation reduction reaction of the resultant 6-chloro-9-(acetonyl)-purine to obtain (R)-(+)-6-chloro-9-(2-hydroxypropyl) adenine; and (3) performing an aminolysis reaction of the resultant (R)-(+)-6-chloro-9-(2-hydroxypropyl) adenine to obtain (R)-(+)-9-(2-hydroxypropyl) adenine. An achiral compound, cheap and easy to obtain, is taken as a raw material in the method; the reaction steps are small; the reaction is easy to deal with; the enantioselectivity of the product is high; and the yield is high, and thus the preparation method has industrialization value.