204 results about "Potassium phosphate" patented technology

The invention discloses a non-specific peroxygenase mutant and application thereof and a preparation method of 25-hydroxyvitamin D3, and particularly relates to a protein obtained by taking an amino acid sequence as shown in SEQ ID NO.1 as a starting sequence and mutating amino acid residues as shown in the 20th site and / or the 25th site and / or the 57th site. The catalyst has relatively high catalytic activity and stereocatalysis specific selectivity; according to the method, acetone, vitamin D3, hydrogen peroxide and a non-specific peroxygenase mutant are respectively added into a potassium phosphate buffer solution with the pH value of 7.0-8.0 to form a reaction mixed solution, an oxidation reaction is carried out for 10-50 hours at the temperature of 25-35 DEG C, the 25-hydroxyvitamin D3 is generated, the reaction condition is mild, the reaction operation is simple and convenient, the conversion rate is high, the cost is low, the preparation efficiency of the 25-hydroxyvitamin D3 is greatly improved, and the method is suitable for industrial production. Good industrial application prospects are realized.

The invention discloses a high-temperature-resistant adhesive tape and a preparation method thereof, and belongs to the technical field of adhesive tape preparation. The adhesive tape is composed of a composite adhesive and a composite polyester film, and the composite adhesive is composed of hydroxyl polydimethylsiloxane, boric acid, 2, 2-bis [4-(4-aminophenoxy) phenyl] propane and 4, 4-bis (4-aminophenoxy) phenyl] propane. The composite polyester film is prepared from polyethylene glycol terephthalate, 1-allylimidazole, 2-bromobutane, potassium hexafluorophosphate, methacryloyloxyethyl trimethyl ammonium chloride and nano silicon dioxide, and the composite polyester film is prepared from polyethylene glycol terephthalate, 1-allylimidazole, 2-bromobutane, potassium hexafluorophosphate, methacryloyloxyethyl trimethyl ammonium chloride and nano silicon dioxide. The adhesive tape prepared by the method has excellent viscosity, high temperature resistance, aging resistance and antistatic property.

The invention relates to the field of electrolytic copper foil processing and application, and discloses a chromium-free environment-friendly passivation solution and an electrolytic copper foil preparation method, and the passivation solution is composed of 80-120 mg / L of silver phosphate, 5-20 mg / L of o-tert-butylphenol, 60-100 mg / L of potassium pyrophosphate and 10-40 mg / L of sulfuric acid. The o-tert-butylphenol can be adsorbed to the crystal boundary of a silver layer to form antioxidant free radicals, and the antioxidant free radicals are preferentially combined with oxygen molecules to form a stable compound, so that the oxidation resistance is improved; and meanwhile, the o-tert-butylphenol can be combined with a silica group of the silane coupling agent, so that the adhesive force of the silane coupling agent on the metal surface is increased, and the stripping resistance of the copper foil is improved.

The application discloses a kind of high waterproof moisture-permeable polyurethane film materials and high waterproof moisture-permeable fabric, it is related to polyurethane film material technical field, high waterproof moisture-permeable polyurethane film material, including following raw materials: polyether diol, diisocyanate, organic solvent, modified porous biochar, modified diatomite, chain extender, thickening agent, defoaming agent, ultraviolet absorber, dibutyltin dilaurate;The modified porous biochar is prepared by activating corn straw powder by potassium phosphate and potassium hydroxide in cooperation, and polyethylene glycol is added as a dispersant, and the modified porous biochar is treated by mercapto and fluorination modification;By introducing potassium phosphate in cooperation with potassium hydroxide to form an activation system in the preparation of modified porous biochar in polyurethane film material, combined with polyethylene glycol, dispersion optimization and reduction synergy are realized, and the moisture permeability, waterproofness, mechanical properties and durability of the material are improved.

The invention relates to the technical field of chemistry, in particular to a synthesis process of 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride, which comprises the following steps: by taking 4-fluoro-3, 5-dimethylbromobenzene as a raw material and hydrazine hydrate as a hydrazine source, matching with alkali such as potassium hydroxide, sodium hydroxide or potassium phosphate and the like, reacting at the temperature of 60-80 DEG C to obtain the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride. The preparation method comprises the following steps: by taking copper or nickel source catalysts such as cuprous bromide, cuprous iodide, nickel salicylate and the like, N, N-bis (2, 6-dimethylphenyl) oxamide as a ligand, hexadecyl trimethyl ammonium bromide as a stabilizer and a dioxane-water mixed system as a solvent, reacting at 80-110 DEG C under the protection of nitrogen, separating a reaction mixed solution after the reaction is finished, and separating the reaction liquid to obtain the target product. And purifying to obtain a finished product of the 4-fluoro-3, 5-dimethyl phenylhydrazine hydrochloride. Therefore, the problems that the synthesis of the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride is poor in safety, low in production efficiency, poor in environmental friendliness, small in substrate application range and the like are solved.

Provided are an aqueous inorganic coating agent capable of forming a coating film having excellent adhesion to a substrate, and a coating method using this aqueous inorganic coating agent. The aqueous inorganic coating agent includes alkaline colloidal silica, at least one of a sodium phosphate compound and a potassium phosphate compound, boric acid, and an inorganic abrasive.

The invention belongs to the field of lithium battery recycling, and particularly relates to a method for recycling lithium in lithium iron phosphate battery black powder. The method comprises the following steps: sieving the lithium iron phosphate battery black powder with a 200-mesh sieve, oxidizing the powder with oxygen for 20-40 minutes to obtain powder a; dry ball milling: weighing phosphoric acid salt of sodium, the powder a and potassium superphosphate, mixing, and carrying out dry milling for 2-3 hours to obtain powder b; iron removal: dissolving the powder b subjected to dry grinding in water, and filtering to obtain a solid phase a and filtrate a; adding 0.1-0.3 wt.% of alkali into the filtrate a, and filtering to obtain filtrate b; leaching out lithium; adding an aqueous solution of saturated soluble carbonate into the filtrate b obtained in the step S3, heating and concentrating, and filtering while hot; washing and enriching; and washing with hot water, filtering, and collecting a solid phase to complete lithium recovery. According to the method, lithium ions are replaced through potassium ions and sodium ions, mechanical ball milling and the oxidation effect of persulfate are matched, lithium is leached in a synergistic mode, corrosion to equipment is small, and meanwhile the leaching rate of lithium can reach 98% or above.

The invention relates to the technical field of organic synthesis, in particular to 4-chloro-1-methyl-6H-heterochromene [3, 4-c] pyridine as well as a synthesis method and application of the 4-chloro-1-methyl-6H-heterochromene [3, 4-c] pyridine. The synthesis method comprises the following steps: (1) synthesizing 2-chloro-3-fluoro-4-iodine-5-methylpyridine from 2-chloro-3-fluoro-5-methylpyridine and an iodine elementary substance to obtain 2-chloro-3-fluoro-4-iodine-5-methylpyridine; (2) synthesizing 2-(2-chloro-3-fluoro-5-methylpyridine-4-yl) benzaldehyde from the 2-chloro-3-fluoro-4-iodo-5-methylpyridine, the 1, 1-bis (diphenylphosphine) ferrocene palladium dichloride, the tripotassium phosphate and the (2-formyl phenyl) boric acid, and further synthesizing the 2-(2-chloro-3-fluoro-5-methylpyridine-4-yl) benzaldehyde from the 2-chloro-3-fluoro-4-iodo-5-methylpyridine and the 1, 1-bis (diphenylphosphine) ferrocene palladium dichloride. And (3) synthesizing the 4-chloro-1-methyl-6H-heterochromene [3, 4-c] pyridine by using the 2-(2-chloro-3-fluoro-5-methylpyridine-4-yl) benzaldehyde and sodium tert-butoxide. The 4-chloro-1-methyl-6H-heterochromene [3, 4-c] pyridine compound constructed by the invention can be used for detecting the content of pesticide residue glyphosate.

The invention discloses a highly waterproof and moisture permeable polyurethane film material and a highly waterproof and moisture permeable fabric, and relates to the technical field of polyurethane film materials. Comprising the following raw materials: polyether glycol, diisocyanate, an organic solvent, modified porous charcoal, modified diatomite, a chain extender, a thickening agent, a defoaming agent, an ultraviolet absorbent and dibutyltin dilaurate. The modified porous biochar is prepared by synergistically activating corn straw powder through potassium phosphate and potassium hydroxide, polyethylene glycol is added as a dispersing agent, and the modified porous biochar is subjected to sulfhydrylation and fluorination modification treatment; potassium phosphate is introduced in preparation of modified porous biochar of a polyurethane film material to cooperate with potassium hydroxide to form an activation system, and polyethylene glycol is combined to realize dispersion optimization and reduction cooperation, so that moisture permeability, water resistance, mechanical properties and durability of the material are improved.

The invention discloses a borate whisker modified magnesium potassium phosphate based steel anticorrosive coating and a preparation method and application thereof, and the anticorrosive coating comprises the following substances in parts by weight: 88-95 parts of magnesium potassium phosphate gel, 4-9 parts of borax and 1-3 parts of borate whisker. The potassium magnesium phosphate gel comprises an acid component and an alkali component, and the mass ratio of the acid component to the alkali component to the borate whisker is 1: (2-3). The preparation method comprises the following steps: crushing borax crystals into powder, adding water into the powder and an acid component gelatinized by potassium magnesium phosphate to form a mixed solution, and fully mixing borate whiskers with an alkali component to form mixed powder; and mixing the mixed solution with the mixed powder, and uniformly stirring to obtain the borate whisker modified potassium magnesium phosphate based steel anticorrosive coating. After the magnesium potassium phosphate gel, the borax and the magnesium borate whisker are added, the toughness of an original material is greatly improved, the service life of the material is greatly prolonged, the durability of the material is greatly improved, and an obtained coating is good in corrosion resistance.

According to the stress-resistant agent for alfalfa planting and the use method of the stress-resistant agent, the synergistic effect of betaine, glucose and monopotassium phosphate is utilized, and a seed soaking or foliage spraying mode is adopted, so that on one hand, expression of a series of stress-resistant related genes can be induced, ROS generated by stress excitation can be eliminated, and the stress resistance of alfalfa can be improved; the damage of reactive oxygen free radicals and the like to plasma membranes is reduced, the activity of antioxidant enzymes is enhanced, the accumulation of osmotic regulation substances is enhanced, and the chlorophyll synthesis of alfalfa leaves is remarkably improved, so that the stress resistance of plants is enhanced, and the damage of adversity stress to alfalfa plants is relieved. The stress-resistant agent is simple in component, free of pungent smell and good in stress-resistant effect, has the characteristics of no environmental pollution, zero emission and no residue, and can obviously promote germination of alfalfa seeds, regulate growth of alfalfa seedlings and improve stress resistance of the alfalfa seedlings.

The invention provides a composite sodium alginate-based aerogel immobilized enzyme carrier and an application thereof. The preparation method comprises the following steps: dispersing sodium alginate and oxidized sodium alginate in deionized water, adding starch and nanocellulose, stirring in a boiling water bath until the starch and nanocellulose are completely dissolved, and cooling to room temperature to obtain a mixed solution; adding a beta-galactosidase solution, and uniformly stirring to obtain an enzyme-containing mixed solution; slowly dripping into a metal ion solution at a constant speed for primary hardening; adding a CaCl2 solution for secondary hardening, and separating to obtain gel microspheres; immersing into a potassium phosphate buffer solution containing polydopamine nanoparticles; freezing and drying; and carrying out heat-moisture treatment. Sodium alginate is used as a substrate material and has good biocompatibility, resistant starch is added in the preparation process, the stability of the aerogel immobilization carrier is improved, and the aerogel immobilization carrier shows a round and full skeleton structure after being freeze-dried to form a supporting effect; and a dynamic dual-network design is adopted, so that the self-repairing capability is provided.

Provided is an aqueous inorganic coating agent capable of forming a coating film having high antifogging properties. [Solution] The aqueous inorganic coating agent comprises small-particle colloidal silica having an average particle diameter of 3 nm or more and 10 nm or less, large-particle colloidal silica having an average particle diameter of more than 10 nm and 100 nm or less, at least one of a sodium phosphate compound and a potassium phosphate compound, boric acid, and water.

The invention provides a preparation method of a yak milk fat globule membrane and application of the yak milk fat globule membrane in inhibition of pseudomonas aeruginosa, and belongs to the technical field of biology. The preparation method comprises the following steps: centrifuging yak milk to obtain coarsely separated milk fat, washing the milk fat with a potassium phosphate buffer solution and ultrapure water in sequence, refrigerating, grinding with a tissue grinder, further crushing with a cell crusher, and finally performing ultracentrifugation on a sample to obtain the milk fat globule membrane. According to the application, the yak milk fat globule membrane is used for inhibiting pseudomonas aeruginosa, in-vitro inhibition experiments prove that the yak milk fat globule membrane has an inhibition effect on the pseudomonas aeruginosa, and the inhibition effect is better than that of Holstein milk fat globule membrane and buffalo milk fat globule membrane. According to the method, the milk consumption is small, the stability is good, the operation difficulty is low, introduction of chemical impurities in the extraction process and the influence of the chemical impurities on membrane components are reduced, the new function of the yak milk fat globule membrane is developed, and the method has good application and popularization prospects and economic value in the aspects of yak milk fat globule membrane extraction and pseudomonas aeruginosa inhibition research.

The invention provides a saline-alkali soil wheat planting method, and relates to the technical field of wheat planting. The method comprises the following steps: firstly, adopting pretreated desulfurized gypsum and potassium fulvate as a soil conditioner to improve the saline-alkali soil structure, then adopting a row-shrinking ridging planting mode, applying a base fertilizer in a drip irrigation manner, and cooperating with a compound microbial agent containing bacillus subtilis, chlorella and the like to enhance the soil activity, and through precise water and fertilizer integrated management in the wheat growth period, the soil quality is improved. And fertilizers such as urea and potassium phosphate and microbial agents are dripped in different growth periods, so that sufficient and balanced nutrition supply is ensured. The saline-alkali soil wheat planting method can remarkably improve the soil fertility of the saline-alkali soil, promote wheat root development and stress resistance, improve the wheat yield, optimize the water and fertilizer utilization efficiency and save resources, is suitable for practical application in drought saline-alkali soil and has wide popularization value.

Provided is a water-based inorganic coating agent capable of forming a coating film having high antifouling properties and excellent abrasion resistance. The aqueous inorganic coating agent includes colloidal silica, at least one of a sodium phosphate compound and a potassium phosphate compound, boric acid, aluminum monophosphate, and water.

To provide formulations of protein molecules comprising iduronate 2-sulfatase.SOLUTION: Certain embodiments provide a pharmaceutical composition comprising a protein molecule comprising an ERT enzyme-Fc fusion polypeptide and a modified Fc polypeptide, a buffer, an isotonicity agent, a surfactant, and a stabilizer, wherein the pH of the pharmaceutical composition is about 5.5 to 7.0, and further provide methods of use thereof. In certain embodiments, the buffer is selected from the group consisting of phosphate buffer, acetate buffer, arginine buffer, and histidine buffer. In certain embodiments, the phosphate buffer is a sodium phosphate buffer or a potassium phosphate buffer.SELECTED DRAWING: None

The present invention relates to a method for producing liquid NPK fertilizer, characterized in that the reactants K2CO3 or KHCO3, NH4HCO3, and H3PO4 are reacted in an aqueous solution to produce potassium and ammonium phosphate salts, particularly K3PO4 and (NH4)3PO4; the reaction is carried out in multiple steps and includes at least one exothermic reaction and at least one endothermic reaction; and the temperature of the reaction is controlled by adjusting the amount and rate of addition of each reactant in the various steps so as to maintain the reaction mixture within a desired temperature range, preferably between 5°C and 50°C, throughout the reaction, without the need for external cooling or heating devices to control the temperature of the reaction. In a more specific embodiment, the method according to the invention is characterized in that at least one exothermic reaction comprises the reaction of K2CO3 with HO to produce KHCO3 and KOH and / or the reaction of KHCO3 with H3PO4 to produce K3PO4, CO2, and HO, and at least one endothermic reaction comprises the reaction of NH4HCO3 with H3PO4 to produce (NH4)3PO4, CO2, and HO.

The application belongs to the field of chemical analysis, and particularly relates to a method for detecting LNT II synthesized by an enzyme catalysis process, comprising the following process: in the process of synthesizing an intermediate and / or end product of LNT II by an enzyme catalysis process, the reaction solution after inactivation and protein removal is detected by HPLC-UV-RI, and the detection result is quantitatively analyzed; the chromatographic condition of the HPLC-UV-RI detection is as follows: a HILIC column of a polymer matrix, a column temperature of 50-60 DEG C, a mobile phase A of acetonitrile, a mobile phase B of a potassium phosphate dibasic aqueous solution, a concentration of the potassium phosphate dibasic aqueous solution of 40-60 mmol / L, a pH value of 6.5-7.5, and a volume ratio of the mobile phase A to the mobile phase B of (65-75):(35-25). The method provided by the application can effectively separate and accurately quantify the substrate, intermediate, end product and the like in the reaction solution in the process of synthesizing LNT II by an enzyme catalysis process.

The present invention relates to a liquid composition characterized in that it comprises: a live attenuated herpes simplex virus 1 (HSV-1); 17.5 mg / mL to 22.5 mg / mL of recombinant human serum albumin (rHSA); less than 5 mg / mL of sucrose; 26 mg / mL to 32 mg / mL of sorbitol; 13.5 mg / mL to 16 mg / mL of potassium phosphate and 3 mg / mL to 7 mg / mL of sodium chloride, wherein the liquid composition comprises no more than 0.01 mM of any of lactose, gelatin, antibiotic and free amino acids.

The present application relates to the field of microorganisms, and specifically discloses a Bacillus megaterium HP‑3 and an application thereof; a Bacillus megaterium HP‑3, Bacillus megaterium HP‑3 (Bacillus megaterium HP‑3) is deposited in the China Center for Type Culture Collection, with a deposit number of CCTCCNO.M20221791; application: a biological fertilizer, comprising the following raw materials in parts by weight: potassium phosphate, diammonium phosphate, EDTA chelated calcium, EDTA chelated iron, magnesium sulfate, zinc sulfate, humic acid, plant fiber, porous particles, and Bacillus megaterium HP‑3 bacterial liquid; Bacillus megaterium HP‑3 has the advantages of strong environmental tolerance, high temperature resistance, and ultraviolet resistance, and the prepared biological fertilizer can inhibit diseases and promote the growth of crops and vegetables.

Disclosed is a novel active material operatable in an aqueous battery. The aqueous battery of the present disclosure includes a positive electrode, an aqueous electrolyte solution and a negative electrode. The positive electrode includes a positive electrode active material, and the negative electrode includes a negative electrode active material. One of or both the positive electrode active material and the negative electrode active material include(s) a composite oxide. The composite oxide contains Na, at least one transition metal element of Fe, Ti, Ni and Mn, and O. The aqueous electrolyte solution contains water and potassium polyphosphate dissolved in the water.

The invention discloses a microbial composition for preventing and treating vomitoxin as well as a preparation method and application of the microbial composition. The microbial composition for preventing and treating vomitoxin is mainly prepared by mixing a component I and a component II according to a mass ratio of (50.0-0.1): (50.0-99.9), the component I comprises trichoderma harzianum powder, trichoderma asperellum powder and penicillium bayi powder; and the component II comprises potassium phosphite, alkene potassium phosphate and potassium tripolyphosphate. The preparation method comprises the following steps: adding the component I and the component II into a stirrer, and stirring and mixing to obtain the coating. The invention also discloses an application of the microbial composition for preventing and treating vomitoxin. The microbial composition disclosed by the invention can generate metabolites with a biocontrol effect, has efficient inhibitory activity on fusarium, can reduce generation of vomitoxin, can effectively regulate diversity of soil microorganisms, realizes crop yield increase and soil improvement, and is green and environment-friendly. The method and application are simple, the cost is low, and the method is suitable for agricultural application.

Disclosed are bolus compositions for ruminants comprising potassium phosphate dibasic and water configured to rapidly dissolve in the rumen for use in the prevention or treatment of hypokalemia and hypophosphatemia. These conditions occur in ruminants at around the time of calving or during periods when ruminants do not eat (anorexia). The bolus compositions may comprise a coating that is compatible with a ruminant digestive tract. Additionally, the bolus compositions may comprise a wick which may be used during the manufacturing process to facilitate the bulk handling and transfer of the bolus compositions.

1.The name of the design product: fertilizer bottle (seaweed mineral source potassium phosphate concentrate stock solution). 2.The use of the design product: the design product is used for packaging fertilizer bottles. 3.The design points of the design product: the combination of shape, pattern and color. 4.The picture or photo that best indicates the design points: front view. 5.The design for which protection is sought contains color.

The invention relates to an aqueous battery. Disclosed is a novel active material capable of operating in an aqueous battery. This aqueous battery has a positive electrode, an aqueous electrolyte solution, and a negative electrode. The positive electrode contains a positive electrode active material, and the negative electrode contains a negative electrode active material. One or both of the positive electrode active material and the negative electrode active material include a composite oxide. The composite oxide comprises Na; a transition metal element selected from at least one of Fe, Ti, Ni and Mn; and O. The aqueous electrolyte solution contains water and potassium polyphosphate dissolved in the water.

The invention belongs to the technical field of biological medicines, and particularly relates to a dissociation liquid applied to an aluminum adjuvant adsorption influenza vaccine and a method for measuring the antigen content. The dissociation liquid disclosed by the invention is prepared from a potassium phosphate salt solution, diethanol amine, TritonX-100, tween-20, dodecyl dimethyl betaine and water. The dissociation liquid is excellent in dissociation efficiency, the dissociation recovery rate of the dissociation liquid to H1N1, H3N2 and BV type influenza vaccine hemagglutinin reaches 106%-110%, the antigen activity can be effectively protected, operation is easy and convenient, adaptability is wide, a dissociated sample can be directly used for mainstream detection methods such as a one-way immunodiffusion test, an enzyme-linked immunosorbent assay and a high performance liquid chromatography method, and the dissociation liquid has good application prospects. The precise quantification of the antigen content in the aluminum adjuvant adsorption influenza vaccine is realized, and a reliable technical support is provided for vaccine quality control.

The invention provides a method for performing defluorination cyclization reaction on perfluoroalkyl tetralone and benzylamine under the promotion condition of potassium phosphate, and a series of polyfluoroalkyl pyridine compounds are synthesized. According to the reaction, six C (sp3)-F bonds of three carbon sites on a perfluoroalkyl chain are selectively activated, accurate synthesis of the fluoroalkyl-containing substituted pyridine compound is achieved, and the method has the advantages of being mild in condition, good in functional group tolerance, simple in aftertreatment, green in step, low in pollution, high in economic benefit and the like.

The invention relates to a method for preparing a macroporous material based on a potassium and / or caesium phosphate salt and silica in the cristobalite and / or tridymite crystalline form, the method comprising the following steps: a) a source of silica is brought into contact with a first phosphate precursor and a first potassium and / or caesium precursor; b) the material precursor is allowed to cure for a period of between 1 minute and 72 hours; c) the material precursor is calcined at a temperature of between 800°C and 1200°C; d) the calcined material precursor is brought into contact with a second phosphate precursor and a second potassium and / or cesium precursor in order to obtain a second material precursor; e) the second material precursor is calcined at a temperature of between 300°C and 600°C in order to obtain the material.

The invention belongs to the technical field of tissue and organ preservation, and particularly relates to tissue and organ general preservation liquid. The general preserving fluid for tissues and organs is prepared from the following components: hydroxyethyl starch, sodium chloride, lactobionic acid, potassium phosphate, magnesium sulfate, bombax pentahydrate, adenosine, allopurine, glutathione, glycerol, heparin, fructose-1, 6-diphosphate, mannitol, an antibacterial component, insulin, simethicone and the balance of distilled water. The general preserving fluid for tissues and organs can preserve the overall physiological activity of the tissues and organs for a long time in a non-frozen state or a frozen state.