36results about How to "Control solubility" patented technology

The invention belongs to the technical field of threonine production, and belongs to a fermentation preparation technology of granular threonine. The technology comprises the followings steps: firstlycentrifuging threonine fermentation liquor by a disc centrifuge, collecting supernate, performing filtering through a ceramic membrane, concentrating filtrate, adjusting pH with sulfuric acid, heating the filtrate to 75 DEG C, performing separation by a horizontal spiral centrifuge, removing precipitate, and collecting supernate; performing filtering through an ultrafiltration membrane, collecting filtrate, crystallizing the filtrate through an intermittent single-effect concentrating crystallizing pan, centrifuging and collecting crystals, then drying the crystals at the temperature of 120 DEG C, compressing the crystals into flake crystals, putting the flake crystals into a granulation tower, performing drying by a fluidized bed, performing crushing and granulation, sieving, collectinggranules with target grain sizes, and performing packaging, so as to obtain the granular threonine. The technology has the advantages that threonine is prepared into granules, the flowability can be improved, the threonine is convenient to store and transport, the solubility is convenient to control, and the quality and the additional value of threonine are improved.

The invention discloses a method for synthesizing high molecular weight instant anionic polyacrylamide, which is characterized in that: an alkaline hydrolysis method is adopted, and comprises the following steps of: preparing aqueous solution of acrylamide monomer from the acrylamide monomer by using deionized water, adding a hydrolytic agent, a composite initiator and an auxiliary agent, regulating the pH value to be between 8.5 and 12, introducing nitrogen, expelling oxygen and sealing a system at the temperature of between 10 and 25 DEG C, polymerizing under the heat insulation condition, and hydrolyzing, crushing, drying and grinding to obtain instant anionic polyacrylamide solid powder with the viscosity-average molecular weight of 15,000,000 to 21,000,000 and the dissolution time of shorter than 0.5 hour. A novel coordination agent and a novel pH value regulator are adopted, the method is easy and convenient to operate, the initiation speed of the monomer is high, the dissolution speed of a product is high, the reaction rate and the molecular weight of the product are controllable, the method is suitable for production on different scales, and the product is suitable for industries such as papermaking dispersants, tertiary oil recovery, beneficiation, sewage treatment and the like.

The invention discloses a fluorine atom substituted benzo heterocycle based conjugated molecule material as well as a preparation method and application thereof. The conjugated molecule material is ofan acceptor-donor-acceptor type structure, wherein an acceptor unit is constructed by using a fluorine atom substituted benzo heterocycle structure and an electron-absorbing dye unit jointly. The conjugated molecule material has the characteristics of easiness in regulation and control of absorption spectrum and molecular energy level, high light absorption, high electron mobility and the like and has a huge application prospect in the fields of organic photovoltaics and organic field-effect transistors.

The present invention relates to an ink composition for printing capable of inking materials for an optoelectronic device and directly applying the inked materials to a patterning process. More particularly, the present invention relates to a printing ink composition for manufacturing an optoelectronic device capable of direct patterning by adjusting the physical property of a core material so asto be suitable for a printing method in the manufacturing of optoelectronic devices, for example, an organic electroluminescent device or an organic thin film transistor.

The invention belongs to the field of inorganic nonmetallic materials, and discloses a method for using calcium sulfate dihydrate to rapidly prepare a short cylindrical calcium sulfate hemihydrate material. The initial structure of common calcium sulfate dihydrate after being processed recrystallizes, the crystal grows to be complete without the problem of shrinkage cavity, and the prepared shortcylindrical calcium sulfate hemihydrate material has the high using value. By means of different energy possessed by different crystal faces of the crystal, calcium sulfate dihydrate controls dissolution and recrystallization speed of crystal faces in different solution systems according to differences of energy of each crystal face, and accordingly growth behavior control of the short cylindricalmaterial is completed. The method comprises the steps of grinding of calcium sulfate dihydrate, material distribution, thermal solution reaction, separation and cooling. The method can not only effectively solve the problems that calcium sulfate dihydrate is easy to pulverize, the strength is poor, and the stability is low, but also can widen the application field of calcium sulfate, and has theimportant practical meaning on high-efficiency utilization of smoke desulfurized products and gypsum resources.

The invention discloses a dyestuff composition with high color fastness to sunlight. The dyestuff composition is prepared by a method comprising the following steps: mixing an ultraviolet absorbent with a dyestuff; adding water and a dispersant; sanding, atomizing and drying to obtain the dyestuff composition. According to the dyestuff composition with high color fastness to sunlight, disclosed by the invention, the particle size can be strictly controlled, the mixing uniformity is strictly controlled, the dispersion uniformity of the dyestuff composition in a dyeing solution is guaranteed and colors can be accurately controlled.

The invention discloses a control method for a remote control system for water treatment intelligent running. The control method comprises the following steps that: after the system is electrified, each unit is started to run, a treatment function in a biological treatment device starts to run, the control unit of a biochemical system is started, and used for detecting various parameters in the biological treatment device, if one or more parameters exceed a preset safety range value, then an alarm device gives an alarm, a central processor sends a regulation instruction to the control unit of the biochemical system, and regulates the parameters which exceed the safety range value; if the various parameters are all normal, then the control unit of the biochemical system normally runs, and the biological treatment device normally runs; the central processor summarizes the data of each parameter in the control unit of the biochemical system in real time, and displays the real-time data of each parameter and the running condition of the biological treatment device through a data display module; a data sending module connected with the central processor is connected with a remote receiving end through a network, and sends the real-time data of each parameter to a main server.

The invention discloses a functionalized temperature-sensitive polymer, a preparation method of same, and an application of same in (PTM) protein detection. The structure formula of the functionalizedtemperature-sensitive polymer is represented as the formula I, wherein R is CH2, r is 0 or 1, m is any natural number from 20 to 750, n is any natural number from 110-1120, and the structure in the specification is horse radish peroxidase unit. The functionalized temperature-sensitive polymer is a linear polymer, which is produced through a free radical polymerization reaction and has a large number of modificable loci. After functional modification, the temperature-sensitive polymer having a plurality of HRP and a large number of triphenyl phosphine groups can be produced. Compared with an antibody strategy in which only single HRP is carried in the prior art, increasing of numbers of the HRP and the triphenyl phosphine groups can effectively increase the combination capability between the polymer and azide-labeled target proteins and signal amplification effect of chemical-luminescence.

The invention relates to a self-conductive type polymer framework resistance reducing agent. The self-conductive type polymer framework resistance reducing agent comprises the following raw materials in parts by weight: 50-60 parts of N-hydroxymethyl acrylamide, 30-40 parts of N, N'-methylene bisacrylamide, 25-30 parts of acetylenedicarboxylic acid, 15-20 parts of manganese chloride, 8-13 parts of sodium sulfite, 100-130 parts of water and 3-8 parts of aqueous dispersant. The self-conductive type polymer framework resistance reducing agent has the advantages of effective and durable resistance reduction and capability of not being affected by the environment.

The invention belongs to the technical field of amino acid production, and discloses a granular threonine extraction and preparation process. The granular threonine extraction and preparation processcomprises the following steps: step 1) fermentation; step 2) fermentation liquor separation and extraction; step 3) concentration and crystallization; step 4) crystal separation; step 5) drying; step6) primary mother liquor crystallization and separation; step 7) chromatographic separation; step 8) crystallization and separation; and step 9) granulation. The extraction process comprises that in aseparation and extraction stage after threonine fermentation, threonine fermented mash is treated by using a ceramic membrane and a horizontal screw centrifuge in a combined manner, and granular threonine is obtained through a dry rolling granulation process. The process can improve the yield of granular threonine, is simple and feasible, effectively reduces the environment-friendly sewage treatment pressure and production loss, and has a wide application prospect.

The invention discloses a preparation method for a semaglutide intermediate. The preparation method comprises the following steps: (A) synthesis of a protective group compound 1 and an analog of the compound 1; (B) synthesis of a compound 3; (C) synthesis of a compound 4; (D) synthesis of a compound 6; (E) synthesis of a compound 8; (F) synthesis of a compound 9; (G) synthesis of a compound 11; (H) synthesis of a compound 12; and (I) reversed-phase high-performance liquid chromatographic purification of a crude semaglutide product, gel chromatographic refining and desalting to obtain a refinedsemaglutide product. The polypeptide product containing special element aided groups in the invention has high purity and does not require multiple high-pressure liquid-phase preparation operations,so production process is greatly simplified and production cost is lowered.

The invention discloses a highly-soluble high-performance semiconductor conjugated polymer and a synthetic method thereof. By introducing length-adjustable long straight hybrid siloxy group chain as aside chain, a series of highly-soluble high-performance bioxindol conjugated polymers are obtained. The synthesized novel high-performance semiconductor conjugated polymer can be used as a hole charge transfer material and applied to organic field-effect transistors. The semiconductor conjugated polymer of the invention has great solubility, and can be dissolved in solvents such as chloroform, toluene, hexane and ethyl acetate, etc. The invention is of great guiding significance for designing and synthesizing the high-performance semiconductor conjugated polymer for non-chlorine solvent processing.

The invention provides a synthesis method of aminophenol. According to the method, by reacting nitrophenol with hydrogen under the conditions of an auxiliary agent and a solvent, an aminophenol product with high selectivity and yield can be prepared, the auxiliary agent can well control the reaction depth of nitrophenol and hydrogen, thereby inhibiting the side reaction, enhancing the purity of the final product, overcoming the problems of poor selectivity and high three-waste amount in the common hydrazine hydrate, sodium hydrosulfite and other reducing agents in the prior art, and having higher industrial application value.

The invention discloses electronic chip 80-120 degree oxygen control type pipeline corrosion resistance liquid metal and a process thereof. According to the weight percentage, an alloy comprises 0.2%-0.4% of Ag, 0.1%-0.3% of Ni, 4.0%-6.0% of Sb, 8.0%-10.0% of Zn, 15.0%-20.0% of In, 3.0%-5.0% of Bi, 1.0%-3.0% of Pb and the balance gallium; and oxide for controlling the oxygen activity comprises 10.0%-20.0% of PbO, 4.0%-8.0% of SnO2, 1.0%-2.0% of TaO, 5.0%-8.0% of MnO2, 2.0%-4.0% of CoO and the balance Fe2O3. The liquid metal is packaged in the pipeline, an oxygen control module is adopted for controlling the oxygen activity, a stable and dense oxide film can be effectively formed on the surface of the stainless steel pipeline, and the corrosion of the liquid metal to pipeline materials is inhibited. The liquid metal has the advantages that the technology process is simple, the implementation cost is low, the heat dissipation is efficient, and the service life of a heat dissipation component is obviously improved.