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136 results about "Potassium acetate" patented technology

Potassium acetate (CH₃COOK) is the potassium salt of acetic acid.

Rapid detection method for mycoplasma pneumoniae nucleic acid

The invention relates to the technical field of biological detection, and discloses a mycoplasma pneumoniae nucleic acid rapid detection method, which comprises the following steps: mixing a sample to be detected with a multifunctional pretreatment buffer solution containing tris (hydroxymethyl) aminomethane, potassium acetate, polyethylene glycol, saponin, spermine tetrahydrochloride and tris (2-carboxyethyl) phosphine hydrochloride, and carrying out cracking treatment; a cracking mixed solution is obtained; redissolving the enzymatic isothermal amplification basic reagent, the specific primer and the probe to obtain a redissolving amplification system; sucking the supernatant of the cracking mixed solution, adding the supernatant into a redissolving amplification system, and adding a magnesium acetate solution to obtain a reaction mixed solution to be detected; and carrying out isothermal amplification and signal acquisition to obtain a detection conclusion. The multifunctional pretreatment buffer solution is used for cracking the to-be-detected sample, sample liquefaction, cracking and nucleic acid release are completed in a single system, the nucleic acid extraction and purification step of centrifugal column adsorption or magnetic bead elution is avoided, and the operation process is simplified.
Owner:THE 3RD AFFILIATED HOSPITAL OF CHANGCHUN UNIVERSITY OF CHINESE MEDICINE

Hand dishwashing detergent concentrate

The invention relates to a liquid detergent composition comprising a first surfactant selected from fatty alcohol ether sulfates, a second surfactant selected from betaines, optionally at least one solvent selected from ethanol, propanol, isopropanol, ethylene glycol, butyl glycol, propylene glycol, polypropylene glycol, alcoholamine, monoethanolamine, glycerol and mixtures thereof, wherein the salt concentration in the composition is about 0.2 to about 10 wt.-% and wherein the salt is selected from the group consisting of sodium salts such as sodium chloride, sodium sulfate, sodium formate, sodium acetate or sodium propionate, potassium salts such as potassium chloride, potassium sulfate, potassium formate, potassium acetate or potassium propionate, magnesium salts such as magnesium chloride, magnesium sulfate, magnesium formate, magnesium acetate or magnesium propionate, and calcium salts such as calcium chloride, calcium sulfate, calcium formate, calcium acetate or calcium propionate, and mixtures thereof, and wherein the composition is a concentrate that can be diluted with water while maintaining or increasing the viscosity.The present invention further relates to the use of such a cleaning composition for cleaning hard surfaces, in particular dishes, and to a process for preparing a cleaning composition, the process comprising diluting the concentrated liquid cleaning composition with water.
Owner:HENKEL KGAA

Low-corrosion snow-melting and deicing coating and preparation method thereof

The invention relates to the technical field of epoxy resin coatings, and particularly discloses a low-corrosion snow-melting and deicing coating and a preparation method thereof. The low-corrosion snow-melting and deicing coating comprises a component A, a component B and a component C in a mass ratio of 100: (40-50): (90-100), and the component A comprises the following raw materials: 100 parts of epoxy resin, 15-25 parts of a polyurethane elastomer, 2-5 parts of an epoxy reactive diluent, 0.5-1 part of a defoaming agent, 2-5 parts of a silane coupling agent and 30-50 parts of a microcapsule snow-melting agent; the component B comprises the following raw materials in parts by weight: 40-60 parts of a polyamide curing agent and 5-10 parts of phytic acid; the component C comprises a reinforcing filler; the microcapsule snow-melting agent comprises a core material and a polyurethane wall material wrapping the core material, wherein the core material comprises potassium acetate and sodium molybdate in a mass ratio of 100: (2-4). According to the invention, the slow release effect of the snow-melting agent in the snow-melting and deicing coating can be improved, and the coating has excellent low corrosion and cracking resistance.
Owner:JIANGSU HONGMIAO INTELLIGENT TRANSPORTATION TECHNOLOGY CO LTD

Conjugated polymer hole transport layer material containing triphenylamine and preparation method thereof

The invention belongs to the technical field of solar cells, and particularly relates to a triphenylamine-containing conjugated polymer hole transport layer material and a preparation method thereof. The preparation method of the triphenylamine conjugated polymer comprises the following steps: reacting aniline with bromobenzene under the action of a catalyst to generate a compound 1; reacting the compound 1 with NBS (N-bromosuccinimide), and performing bromination reaction to obtain a compound 2; reacting the compound 2 under the action of bis-pinacol diboron, potassium acetate and a catalyst to obtain a compound 3; the method comprises the following steps: dissolving a monomer 1, a monomer 2 and a catalyst in an organic solvent, and carrying out polymerization reaction under the protection of nitrogen to obtain the triphenylamine conjugated polymer. The synthetic route is simple, the yield is high, conditions are easy to realize, and the hole transport layer material prepared from the conjugated polymer of triphenylamine is high in transport efficiency and can be popularized in a large range.
Owner:QINGDAO UNIV

Environment-friendly anti-icing and deicing coating as well as preparation method and application thereof

The invention discloses an environment-friendly anti-icing and deicing coating as well as a preparation method and application thereof, and aims to solve the problems of low efficiency, high corrosivity, serious environmental pollution and the like in the traditional anti-icing and deicing technology. The coating material is prepared from the following components: deionized water, polyvinylpyrrolidone, propylene glycol, glycerol, fumed silica, granular silica, ethanol, potassium acetate and a waterborne polyurethane coating. The invention further provides a preparation method of the coating material, and the coating material is applied to anti-icing of metal and plastic substrates and has dual functions of preventing icing and rapidly removing ice. The coating has the advantages of being good in durability, environmentally friendly, free of corrosion to base materials and the like, is particularly suitable for anti-icing protection of equipment such as rails, wind power blades and cables, remarkably improves the operation and maintenance efficiency of key facilities and equipment, reduces the maintenance cost and has important economic and social benefits.
Owner:UNIV OF SCI & TECH OF CHINA

Environment-friendly snow melting agent

The invention discloses an environment-friendly snow melting agent which is mainly prepared from the following raw materials in percentage by mass: 20-50% of potassium acetate, 10-16% of potassium chloride, 4-10% of calcium chloride and calcium acetate, 3-7% of magnesium chloride, 10-30% of an ice-resistant binder, 11-17% of a soil protective agent, 5-6% of cellulose and 3-9% of a plant protective agent. The ice-resistant binder is one or a combination of more of calcium acetate, magnesium acetate, potassium acetate and potassium formate, the mass ratio of calcium acetate to magnesium acetate is 3: (7.5-8.5), and the soil protective agent comprises 5-15% of diatomite and 10-20% of bentonite. Compared with the prior art, the environment-friendly snow melting agent disclosed by the invention can reduce the freezing point, prevent adhesion of an ice layer and a road surface and accelerate melting of an ice surface, so that a melted ice-snow-water mixture is easier to remove, effective recycling of resources is realized, pollution to the environment is reduced, and meanwhile, the treatment pressure of wastes is reduced.
Owner:LIANYUNGANG JIALAI NEW MATERIALS TECHNOLOGY CO LTD

Treatment methods for saline wastewater

This invention relates to the field of wastewater treatment and discloses a method for treating saline wastewater. The method includes: 1) evaporating the wastewater to be treated to obtain a concentrated liquid; 2) separating the concentrated liquid into solid and liquid phases, and cooling the liquid phase obtained from the solid-liquid separation to crystallize it, obtaining a crystalline liquid; 3) separating the crystalline liquid into solid and liquid phases and evaporating the liquid phase obtained from the solid-liquid separation to obtain a concentrated liquid; 4) cooling the concentrated liquid to crystallize it, obtaining a crystalline liquid; 5) separating the crystalline liquid into solid and liquid phases, wherein, relative to the CH3COO content in 1 mol of the wastewater to be treated... ‑ The wastewater to be treated contains Cl ‑ The concentration is 0.4-5 mol. The method according to this invention is environmentally friendly and can separately recover potassium chloride and potassium acetate from wastewater, maximizing the reuse of resources in the wastewater.
Owner:NUTRICHEM LAB CO LTD

Process for the production of ultrafine glass powder by spray pyrolysis

This invention discloses a process for preparing ultrafine glass powder using a spray pyrolysis method in the field of glass encapsulation materials. The process first prepares a homogeneous solution A using boric acid, aluminum nitrate nonahydrate, alkaline earth metal nitrates, lithium acetate, sodium acetate, and potassium acetate. Tetraethyl orthosilicate is dissolved in anhydrous ethanol to obtain solution B. A rare earth transition metal composite oxide nanoclusters encapsulated with a silica shell hybrid inorganic modifier is dispersed in anhydrous ethanol to obtain suspension C. Solution B and suspension C are mixed, and deionized water and hydrochloric acid are added to adjust the pH. After pre-hydrolysis and cooling, triethyl borate is added dropwise for co-condensation, and then mixed with solution A. After adjusting the pH and aging, the mixture is ultrasonically atomized and spray pyrolyzed to obtain ultrafine glass powder. The glass powder obtained by this invention has small particle size, high sphericity, and can be continuously produced.
Owner:RIZHAO MAOYUAN ELECTRONIC CO LTD

Bis-carbazole bipyridine compound as well as preparation method and co-sensitization application thereof

The invention discloses a dicarbazole bipyridine compound as well as a preparation method and co-sensitization application thereof, and the specific preparation process comprises the following steps: dissolving a compound as shown in a formula II and 4-pyridylboronic acid in a solvent, adding an alkaline substance and a catalyst, carrying out heating reflux reaction under stirring, and after the reaction is finished, carrying out post-treatment to obtain a compound as shown in a formula DSB-6; the preparation method comprises the following steps: dissolving 4-bromophenylpyridine, bis (pinacolato) diboron, PdCl2 (dppf) and potassium acetate in 1, 4-dioxane, heating and refluxing, then adding a compound as shown in a formula II, an alkaline substance aqueous solution and a catalyst, heating and refluxing to react while stirring, and after the reaction is finished, carrying out post-treatment to obtain a compound as shown in a formula DSB-7, and using the compound as a dye sensitizer to prepare the dye sensitizer. According to the preparation method disclosed by the invention, an alkyl chain is connected with dicarbazole and bipyridine, and benzothiadiazole or phenyl benzothiadiazole is introduced into carbazole, so that the dicarbazole and bipyridine compound is synthesized, and a new applicable substance is added for screening dye sensitizers.
Owner:ZHEJIANG UNIV OF TECH

Bio-based composite environment-friendly snow melting agent

The invention provides a bio-based composite environment-friendly snow melting agent. The bio-based composite environment-friendly snow melting agent comprises the following components in parts by weight: 20-50 parts of a bio-based component, 15-30 parts of a chlorine salt component, 5-10 parts of calcium oxide, 10-20 parts of urea, 20-40 parts of potassium acetate, 2-8 parts of a composite corrosion inhibitor and 2-8 parts of an anti-skid adsorption component. According to the bio-based composite environment-friendly snow-melting agent disclosed by the invention, a renewable bio-based material is used for partially replacing a traditional snow-melting component and is compounded with conventional chlorine salt and non-chlorine salt snow-melting components, and a composite corrosion inhibitor and an anti-skid adsorption component are added, so that the aims of efficiently melting snow, being low in corrosivity and being harmless to the environment can be fulfilled.
Owner:ENG TECH INST CO LTD OF CNSIC

Application of protein acetyl donor in ultralow-temperature cryopreservation of poultry semen

The invention relates to the technical field of poultry breed conservation biology, and discloses application of a protein acetyl donor in ultralow-temperature cryopreservation of poultry semen. According to the application of the protein acetyl donor in ultralow-temperature cryopreservation of the poultry semen, the protein acetyl donor comprises but is not limited to magnesium acetate, potassium acetate and sodium acetate. Tests prove that the protein acetyl donor can improve the acetylation modification level of poultry sperms and improve the fertilization ability of frozen-remelted poultry sperms; therefore, the protein acetyl donor can be used as an effective component for ultralow-temperature cryopreservation of poultry semen, and plays an important role in improving the ultralow-temperature cryopreservation efficiency of poultry.
Owner:INSTITUTE OF ANIMAL SCIENCES OF CHINESE ACADEMY OF AGRICULTURAL SCIENCES

Tryptanthrin derivative as well as preparation method and application thereof

The invention belongs to the technical field of preparation of anti-inflammatory drugs, and particularly discloses a tryptanthrin derivative and a preparation method and application thereof.The structural formula of the tryptanthrin derivative is # imgabs0, R is one of R1, R2 and R3, and when R is R1, # imgabs1 # reacts with H-R1, Pd (PPh3) 2Cl, copper iodide, triethylamine and an organic solvent to prepare the tryptanthrin derivative; when R is R2, the catalyst is prepared by reacting # imgabs2 # with H-R2, Pd2 (dppf) Cl2, potassium acetate and methylbenzene; when R is R3, the PdCl (PPh3) 4 is prepared by reacting with H-R3, silver carbonate, PdCl (PPh3) 4 and acetonitrile. The tryptanthrin derivative disclosed by the invention has high biological activity and solubility and low toxicity, and has the potential of being developed into a medicine for treating ulcerative colitis.
Owner:SHAANXI UNIV OF CHINESE MEDICINE

Organic potassium compositions derived from plant ash

Compositions comprising Certified Organic potassium salts derived from plant ash are described herein. The compositions described herein include potassium acetate derived from acetic acid and sunflower ash. Such compositions can be used as a fertilizer component in organic farming and result in higher plant yields compared to plants treated with inorganic forms of potassium alone.
Owner:BIO GRO INC

Chicken semen cryopreservation liquid and preparation method thereof

The invention belongs to the technical field of biology, and particularly discloses a chicken semen cryopreservation solution and a preparation method thereof. The chicken semen cryopreservation liquid comprises a cryoprotection liquid I and a cryoprotection liquid II. The freezing protection liquid I is prepared from the following components: glucose, sodium glutamate, potassium acetate, dipotassium phosphate, magnesium acetate, N, N-bis (2-ethoxyl)-2-aminoethanesulfonic acid and an antibiotic solution. And the freezing protection liquid II comprises dimethylformamide and nano zinc oxide. The invention discloses a chicken semen cryopreservation solution and a preparation method thereof, by applying the chicken semen cryopreservation solution, the fertilization and incubation performance of frozen semen is remarkably improved, centrifugation-free and direct semen deposition of the frozen semen are realized, and physical damage and activity reduction caused by the centrifugation process to sperms are avoided.
Owner:HENAN AGRICULTURAL UNIVERSITY

Pavement environment-friendly cleaning snow-melting agent and preparation method thereof

The invention belongs to the technical field of snow melting and deicing, and discloses an environment-friendly cleaning snow-melting agent for a road surface and a preparation method thereof. The snow-melting agent is composed of 40-80 parts of a chlorine salt solution, 10-20 parts of potassium acetate, 1-10 parts of sodium gluconate, 1-10 parts of urea, 80-100 parts of glycerin and 1-10 parts of a corrosion inhibitor. Wherein the chlorine salt solution comprises 20-40 parts of calcium chloride, 10-20 parts of magnesium chloride and 100 parts of water, and the corrosion inhibitor comprises 1-10 parts of zinc dihydrogen phosphate, 1-10 parts of sodium tungstate, 1-5 parts of thiourea and 1-10 parts of sodium dodecyl benzene sulfonate. The preparation method comprises the steps of raw material pretreatment, mixing and dissolving, corrosion inhibitor adding and the like. The snow melting agent disclosed by the invention has the advantages of good snow melting effect, low corrosivity, small environmental influence, long acting time and low cost, and can reduce the spraying frequency and protect the surrounding environment.
Owner:HUNAN HYUNDAI YANGXUE NEW MATERIALS TECHNOLOGY CO LTD

N-acylamino acid surfactant and preparation method thereof

The invention discloses an N-acylamino acid surfactant and a preparation method thereof, and belongs to the technical field of surfactants, the N-acylamino acid surfactant is prepared by the following steps: adding potassium anilinoacetate, fatty aldehyde and deionized water into a supercritical reactor according to a certain molar ratio, then adding a certain amount of triethylamine phase transfer catalyst, reacting for a period of time under the condition of supercritical nitrogen, and separating out the N-acylamino acid. And filtering the product in the reactor, standing and layering the obtained filtrate, and taking the subnatant to obtain the amino acid surfactant. The fatty aldehyde and the potassium anilinoacetate are subjected to dehydrogenation reaction under the action of the triethylamine phase transfer catalyst to prepare the amino acid surfactant, the reaction is carried out under the condition of supercritical nitrogen, and the supercritical nitrogen not only provides a high-pressure condition for the dehydrogenation reaction, but also has high solubility and high diffusivity, so that the amino acid surfactant is prepared. The raw materials can be fully dissolved, mixed and reacted, and the yield of the amino acid surfactant is high.
Owner:YANCHENG INST OF TECH

A method of using a synergist for denitration of an SNCR system

PendingCN122352014ARaw materialDenitrification
This application discloses a method for using a synergistic enhancer in SNCR system denitrification, relating to the field of flue gas denitrification technology. The method includes the following steps: S1, preparation of the synergist composition: including potassium acetate, sodium carbonate, and water, the above raw materials are placed in a synergist preparation tank and stirred to prepare a synergist solution; S2, ammonia water delivery: the ammonia water solution is delivered through an ammonia water delivery pipeline; S3, delivery and mixing of the synergist solution for denitrification: the synergist solution is delivered to the ammonia water delivery pipeline through a synergist delivery device, so that the synergist solution and the ammonia water solution are mixed to obtain a mixed solution, which is then sprayed into the incinerator furnace for denitrification reaction. This application uses potassium acetate and sodium carbonate in a specific ratio to form a denitrification enhancer, which has a simpler structure, is easier to prepare, and requires a lower synergist dosage, effectively reducing the raw material and preparation costs of denitrification operations in incinerators, and significantly improving denitrification efficiency and reducing NOx emissions.
Owner:GRANDBLUE ENVIRONMENT CO LTD +1

Environment-friendly snow-melting and deicing composition and preparation method thereof

The invention relates to the technical field of snow-melting agents, and particularly discloses an environment-friendly snow-melting and deicing composition and a preparation method thereof. The environment-friendly snow-melting and deicing composition comprises organic acid salt sustained-release microspheres, the organic acid salt sustained-release microsphere comprises a core material and a shell layer wrapping the core material, and according to the total weight of the organic acid salt sustained-release microsphere, the core material comprises the following raw materials in parts by weight: 30-45 parts of calcium magnesium acetate, 10-20 parts of sodium formate, 15-25 parts of potassium acetate, 8-15 parts of urea, 1-3 parts of a surfactant and 2-5 parts of a corrosion inhibitor; the shell layer is prepared from the following raw materials in parts by weight: 5 to 8 parts of sodium alginate, 3 to 6 parts of chitosan, 2 to 4 parts of calcium chloride, 1 to 3 parts of carboxymethyl cellulose and 1 to 2 parts of nano silicon dioxide. The snow melting and deicing speed of the environment-friendly snow melting and deicing composition in a severe cold environment can be increased.
Owner:JIANGSU HONGMIAO INTELLIGENT TRANSPORTATION TECHNOLOGY CO LTD

Improved ionogel confined palladium on carbon catalyst, its preparation method and application

This invention relates to the field of fine chemical catalysis technology, specifically to an improved ion-gel confined palladium-on-carbon catalyst, its preparation method, and its applications. The catalyst uses N,N-dimethylacetamide (DMAc) as a solvent and potassium acetate as a base, with the addition of a catalytic amount of antioxidant 168 [(tris(2,4-di-tert-butylphenyl) phosphite)], and the reaction is carried out under milder CO pressure (1.0-1.6 MPa) and temperature (90-110 °C). This improved catalyst, in synergy with the optimized process, unexpectedly enables the high conversion and selectivity of 4-bromobenzyl sulfone derivatives to 4-methylsulfonylbenzoic acid derivatives, while maintaining the catalyst's excellent recyclability and stability. This invention provides a highly efficient, green, and easily industrialized synthetic route for the target product.
Owner:YULIN UNIV

Ageing-resistant highlight veneer shaving board and preparation method thereof

The invention discloses an anti-aging highlight veneer shaving board and a preparation method thereof, and belongs to the technical field of wood board production. The manufacturing method comprises the steps of eucalyptus wood shaving preparation, primary drying, potassium acetate treatment, secondary drying, acetic anhydride treatment, tertiary drying, gluing, assembly, pre-pressing and hot pressing, and the acetylated eucalyptus wood shaving board is manufactured. And then sanding, melamine paper pasting, hot pressing, colored paint roller painting, varnish and UV paint curing are conducted, and the anti-aging highlight veneer shaving board is obtained. The product has lasting highlight on the surface, solves the problem of reflection imaging sawtooth waves of a common shaving board, and is suitable for high-end furniture and indoor decoration.
Owner:BEIHUA UNIV

Contact lens treatment solution

The contact lens treatment solution comprises: (a) one or more potassium salts selected from the group consisting of potassium chloride, potassium citrate, potassium hydroxide, potassium borate, potassium ethylenediaminetetraacetate, and potassium phosphate; (b) an antimicrobial agent comprising alexidine or a salt or free base thereof; and (c) optionally, one or more sodium salts selected from the group consisting of sodium chloride, sodium citrate, sodium hydroxide, sodium phosphate, sodium ethylenediaminetetraacetate, and sodium borate, wherein, when one or more sodium salts are present, the one or more potassium salts are present in an amount greater than the amount of the one or more sodium salts.
Owner:BAUSCH & LOMB IRELAND LIMITED

A preparation method of halcinonide intermediate

The present invention is applicable to the technical field of chemical drug synthesis, and provides a preparation method of halcinonide intermediate, comprising the following steps: adding acetic acid to anecortave acetate in an organic solvent, reacting under the common catalysis of p-toluenesulfonic acid and trifluoroacetic anhydride, adjusting the pH value with ammonia, separating, washing, concentrating under reduced pressure, beating, filtering, and drying to obtain D-1; adding D-1 to dimethyl sulfoxide, reacting under the catalysis of potassium acetate, cooling, precipitating a solid, filtering, and drying to obtain D-2; adding an aqueous solution of sodium hydroxide or lithium hydroxide to D-2 in a reaction solvent, and hydrolyzing the reaction to obtain D-3; reacting D-3 with an acyl chloride in an aprotic solvent under alkaline conditions to obtain D-4; adding D-4 to DMF, and reacting with lithium chloride under nitrogen protection to obtain D-5. The raw material anecortave acetate used in the present invention is easily available and cheap, and the method for preparing D-5 is efficient, green, safe, and has a high yield.
Owner:NANJING ANYIHE PHARM TECH CO LTD

Formula and processing method of slow-burning paper

The invention provides a slow-burning paper formula and a processing method thereof, and belongs to the technical field of aromatherapy, the slow-burning paper formula comprises the following raw materials by weight: 70-80% of distilled water, 5-6% of potassium carbonate, 0.5-1% of potassium hydroxide, 13-23% of ethanol, and pure wood pulp paper as a base material; the purity of the potassium carbonate is more than or equal to 99%, the particle size is less than or equal to 100 meshes, the potassium carbonate is a flaky solid, the solubility of the potassium carbonate at 20 DEG C is more than or equal to 110 g per 100 g of water, the ethanol is absolute ethyl alcohol with the volume concentration of 95-99.7%, and the impurity content of the ethanol is less than or equal to 0.3%; a traditional potassium nitrate or saltpeter combustion improver is replaced with a composite formula of potassium carbonate, potassium hydroxide and ethyl alcohol, poisonous gas such as nitric oxide cannot be generated during combustion of the slow-combustion paper, generation of incomplete combustion products such as carbon monoxide, aldehydes and tar can be inhibited in the combustion process of potassium acetate, and the pollution problem caused by decomposition of the combustion improver is avoided; the environment-friendly and health requirements are met.
Owner:FOSHAN SHUNDE DISTRICT CHENGXUAN PACKAGING MATERIALS CO LTD

Preparation method of electrolyte of high-voltage, high-current-density and high-stability aqueous alkaline zinc-iron flow battery

The invention discloses a preparation method of an electrolyte of a high-voltage, high-current-density and high-stability aqueous alkaline zinc-iron flow battery in the field of flow batteries. The electrolyte is prepared by blending potassium diethyltriamine pentaacetate, zinc ions and potassium salt. According to the invention, the charge / discharge voltage of the zinc-iron flow battery in the cycle process and the cycle stability of the zinc-based flow battery under high current density are greatly improved, and the phenomena of hydrogen evolution and zinc dendrite of the zinc negative electrode in the existing alkaline aqueous zinc-iron flow battery are inhibited.
Owner:YANGZHOU UNIV

Pretreatment method of resistance gene detection sample in breeding waste

The pretreatment method of the resistance gene detection sample in the breeding waste comprises the following steps: suspending the breeding waste in sterile water, and treating the breeding waste for 1-2 hours by adopting a pretreatment agent I; the pretreating agent I is prepared from aluminum sulfate and ferrous sulfate according to the weight ratio of 5: (1-3); after centrifuging, adding a pretreating agent II into a solid phase for treating; the pretreatment agent II is a sterile aqueous solution composed of 8-12% w / w of PVP30 and 0.5-1.5% w / w of sodium acetate; after centrifugation, adding a pretreatment agent III into a solid phase for treatment; the pretreatment agent III is a sterile aqueous solution composed of potassium acetate with the concentration of 3-5 M and sodium chloride with the concentration of 0.5-0.8 M. According to the pretreatment method provided by the invention, DNA in the breeding waste can be effectively reserved, the content of DNA obtained by subsequent DNA extraction work is effectively increased, and detection of resistance genes in the breeding waste is facilitated.
Owner:SICHUAN NORMAL UNIV

Flame-retardant polyurethane soft foam based on phenylphosphonic acid intercalated kaolin as well as preparation method and application of flame-retardant polyurethane soft foam

PendingCN122011500AEthylic acidKaolin clay
The invention relates to the technical field of flame-retardant materials, in particular to flame-retardant polyurethane soft foam based on phenylphosphonic acid intercalated kaolin as well as a preparation method and application of the flame-retardant polyurethane soft foam. Preparing potassium acetate intercalated kaolin; preparing phenylphosphonic acid intercalated kaolin; the preparation method comprises the following steps: adding phenylphosphonic acid intercalated kaolin into a chitosan aqueous solution, immersing polyurethane foam, continuously and slowly stirring, taking out and drying after immersing, then immersing in a glutaraldehyde ethanol solution, stirring, taking out and drying to obtain the flame-retardant polyurethane soft foam. By adopting the steps, the prepared chitosan-coated phenylphosphonic acid intercalated kaolin coating has low heat release rate and smoke release rate, and also has excellent flame retardant property; the chitosan-coated phenylphosphonic acid intercalated kaolin coating and the flame-retardant polyurethane soft foam can significantly reduce the combustible gas release and smoke generation rate under a thermal exposure condition.
Owner:TAIYUAN UNIVERSITY OF TECHNOLOGY +1

Preparation and application of catalyst for catalytically converting alpha-angelica lactone into beta-angelica lactone

The invention provides a preparation method of a biomass platform molecule angelica lactone isomerization catalyst. The catalyst comprises one of the following solid metal oxides and one of potassium assistants: eight metal oxides (m-zirconium oxide, t-zirconium oxide, c-zirconium oxide, aluminum oxide, magnesium oxide, barium oxide, lanthanum oxide and neodymium oxide) and seven potassium sources (potassium nitrate, potassium carbonate, potassium acetate, potassium hydroxide, potassium chloride, potassium oxalate and potassium oxide). By designing the preparation method of the metal oxide, the high-specific-surface-area pure-crystalline-phase metal oxide is obtained; by introducing the potassium aid, the surface alkalinity of the catalyst is effectively regulated and controlled, so that the alpha-angelica lactone is simply and efficiently isomerized into the beta-angelica lactone. The catalyst provided by the invention has the characteristics of high activity, high selectivity, high stability and easy recovery, and provides a feasible technical approach for biomass platform molecule angelica lactone isomerization.
Owner:FUZHOU UNIV

A low-corrosion snow-melting and ice-melting coating and its preparation method

The present application relates to the technical field of epoxy resin coatings, and specifically discloses a low-corrosive snow-melting and ice-melting coating and a preparation method. The low-corrosive snow-melting and ice-melting coating comprises a component A, a component B and a component C in a mass ratio of 100: (40-50): (90-100), wherein the component A comprises the following raw materials: 100 parts of epoxy resin, 15-25 parts of polyurethane elastomer, 2-5 parts of epoxy reactive diluent, 0.5-1 part of defoamer, 2-5 parts of silane coupling agent, and 30-50 parts of microcapsule snow-melting agent; the component B comprises the following raw materials: 40-60 parts of polyamide curing agent, 5-10 parts of phytic acid, and the component C comprises reinforcing filler; the microcapsule snow-melting agent comprises a core material and a polyurethane wall material for wrapping the core material, and the core material comprises potassium acetate and sodium molybdate in a mass ratio of 100: (2-4). The present application can improve the sustained-release effect of the snow-melting agent in the snow-melting and ice-melting coating, and the coating has excellent low-corrosiveness and crack resistance.
Owner:JIANGSU HONGMIAO INTELLIGENT TRANSPORTATION TECHNOLOGY CO LTD

Environment-friendly self-heating long-acting snow melting agent

The invention provides an environment-friendly self-heating long-acting snow melting agent. The environment-friendly self-heating long-acting snow melting agent comprises the following components in parts by weight: 5-10 parts of calcium oxide, 15-30 parts of calcium chloride, 15-20 parts of magnesium chloride, 20-40 parts of potassium acetate, 10-15 parts of calcium magnesium acetate, 5-20 parts of sodium formate and 1-10 parts of a corrosion inhibitor. The environment-friendly self-heating long-acting snow melting agent disclosed by the invention has the advantages of rapid self-heating starting, lasting snow melting effect and environmental friendliness.
Owner:ENG TECH INST CO LTD OF CNSIC

Wide voltage window electrolyte for aqueous zinc-based battery and preparation method and application thereof

The invention discloses a wide-voltage-window electrolyte for an aqueous zinc-based battery and a preparation method and application of the wide-voltage-window electrolyte for the aqueous zinc-based battery, and the wide-voltage-window electrolyte for the aqueous zinc-based battery comprises a solute, a solvent, a first functional additive and a second functional additive, the solute is at least one of zinc sulfate, zinc acetate, zinc trifluoromethanesulfonate and bis (trifluoromethylsulfonyl) imide zinc, the solvent is a mixture of water and acetonitrile, the first functional aid is at least one of potassium acetate and ammonium acetate, and the second functional aid is fluoroethylene carbonate. According to the invention, the volume ratio of water to acetonitrile in the solvent is precisely regulated and controlled, and the first functional aid and the second functional aid are added, so that a wide voltage window of 0.1-3.1 V is obtained, the zinc ion conductivity at 25 DEG C is ensured to be greater than 5.0 mS / cm, and the technical problem that the voltage window and the ion conductivity are difficult to consider at the same time in the prior art is solved; and thus, the charging and discharging stability of the zinc-iodine battery is improved.
Owner:HUASHEN (TIANJIN) NEW ENERGY TECH CO LTD