251 results about "Propionate" patented technology

The invention discloses piggy creep feed containing composite flavone. The piggy creep feed is prepared from the following raw materials in parts by weight: 13 to 20 parts of expanded corn, 10 to 25 parts of corn, 6 to 13 parts of broken rice, 8 to 12 parts of flour, 8 to 15 parts of whey mist, 3 to 8 parts of soy protein concentrate, 5 to 10 parts of extruded soybean, 0.7 to 3 parts of soya-bean oil, 7 to 12 parts of 46.5-percent bean pulp, 2 to 5 parts of fish meal, 2 to 5 parts of plasma protein powder, 0.3 to 0.7 part of mountain flour, 0.5 to 1.0 part of calcium hydrophosphate, 0.05 to 0.5 part of lysine, 0.05 to 0.3 part of threonine, 0.1 to 0.3 part of sodium chloride, 0.1 to 0.8 part of compound flavone premix compounds, 0.15 to 0.3 part of zinc oxide, 0.03 to 0.06 part of calcium propionate, 0.02 to 0.04 part of ethoxyquin and 1.0 part of suckling pig premix compounds. The invention also discloses a preparation method. The intestinal tract health and the production performance of weaned pigs can be improved.

The invention belongs to the field of detection and analysis, and relates to a method for separating and detecting enantiomers in (S)-2-amino-3-[2-(tert-butoxy)-2-oxoacetamido] tert-butyl propionate hydrochloride. According to the method, HPLC is adopted for separation and detection, a polysaccharide derivative chiral chromatographic column is selected as a chromatographic column, a mobile phase A is a weak base aqueous solution, and a mobile phase B is acetonitrile and / or methanol. The method is strong in specificity, high in separation degree, high in accuracy, stable, reliable and high in sensitivity, and a simple, accurate, rapid and reliable detection method is provided for control of impurities in a starting material of (S)-2-amino-3-[2-(tert-butoxy)-2-oxoacetamido] tert-butyl propionate hydrochloride.

The invention belongs to the technical field of crosslinked polyethylene, and particularly relates to crosslinked polyethylene for a high-voltage cable and a preparation method of the crosslinked polyethylene. The cross-linked polyethylene for the high-voltage cable is prepared from the following raw materials in parts by weight: 100 parts of low-density polyethylene, 3.5 to 4.5 parts of nano filler master batch, 0.30 to 0.35 part of tetra [beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, 0.7 to 0.8 part of 2, 2, 6, 6-tetramethylpiperidine oxide, 0.7 to 0.8 part of 4-allyloxy-2-hydroxybenzophenone, 0.7 to 0.8 part of 2, 5-dimethyl-2, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 1.0 to 1.2 parts of 2, 5-di-tert-butylperoxy-3-hexyne; and 0.8 to 1.0 part of tert-butyl peroxyisononanoate. The crosslinked polyethylene for the high-voltage cable has excellent tensile strength and breakdown strength.

The present invention relates to the topical pharmaceutical composition comprising about 0.001% w / w to about 1% w / w latanoprost and about 1% w / w to about 15% w / w cortexolone-17α-propionate and a pharmaceutically acceptable vehicle comprising one or more solvent and process of its preparation. The invention further relates to the method wherein the composition is suitable for preventing and / or treating hair loss and / or stimulating hair growth. in patients suffering from alopecia, in particular androgenic alopecia (AGA).

The invention belongs to the technical field of rubber sealing rings, and particularly discloses a wading rubber sealing ring and a preparation method thereof, the wading rubber sealing ring comprises the following components by weight: 60-70 parts of modified ethylene propylene diene monomer, 35-50 parts of modified white carbon black, 20-30 parts of hydrogenated nitrile rubber, 0-10 parts of fluororubber, 2-5 parts of polyester fiber, 0.5-3 parts of an anti-hydrolysis agent, and 1-3 parts of a hydrophobic agent. 2-4 parts of an antimicrobial agent, 3-5 parts of an anti-aging agent and 1-7 parts of sulfur; the anti-hydrolysis agent is a mixture of tetrakis [beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester and a carbodiimide anti-hydrolysis agent; the hydrophobic agent is a mixture of polydimethylsiloxane and perfluorooctyltriethoxysilane, and the hydrophobic agent is a mixture of polydimethylsiloxane and perfluorooctyltriethoxysilane. The wading rubber sealing rubber ring and the preparation method thereof are suitable for fresh water and warm water scenes, and have wide application prospects in ship sealing and sewage treatment equipment in seawater and industrial wastewater scenes.

The invention discloses microencapsulated perfluorohexanone as well as a preparation method and application thereof. Perfluorohexanone serving as a core material is embedded in a core part of a microcapsule; the shell layer I is formed by carrying out polymerization reaction on isophorone diisocyanate, trimethylolpropane and 1, 4-butanediol; the shell layer II is formed by interface bonding of the shell layer I subjected to surface modification through a silane coupling agent and polyurethane propionate, chemical bonding of the microcapsule and a secondary embedding layer is enhanced through modification of the silane coupling agent, PUA and nano-silica form double barriers, leakage is reduced, thermal degradation is delayed, and the microcapsule has the advantages of being good in stability, good in stability, good in stability and the like. The heat stability of the nano silicon dioxide and the mechanical strength of the PUA jointly improve the control capacity of release of the fire extinguishing agent, the steps or components are omitted, and the core functions (embedding, heat stability and fire extinguishing) of the microcapsule are remarkably reduced due to structural defects and insufficient interface bonding.

The invention provides a high-foaming self-thickening amino acid cleaning composition and a preparation method thereof, and relates to the technical field of cosmetics. The high-foaming self-thickening type amino acid cleaning composition is prepared from the following raw materials in percentage by mass: main surfactants: 15%-20% of potassium cocoyl glycinate, 0.5%-2.0% of sodium cocoyl amino propionate and 0.05%-2% of sodium lauroyl glutamate; the auxiliary surfactant comprises the following components in percentage by weight: 1.2%-1.8% of sodium lauroamphoacetate, 1.8%-3.6% of lauryl hydroxyl sulfobetaine, 0.5%-1.5% of sodium methyl cocoyl taurate and 0.5%-1.5% of lauryl glucoside; and 0.5%-1.8% of an acrylic ester copolymer. The cleaning composition is free of fatty acid components, small in irritation, rich and dense in foam, good in foam performance, high in cleaning power, good in flushing performance, free of false slip after flushing and good in stability.

The invention discloses an ethylene-vinyl acetate copolymer, an ethylene-vinyl alcohol copolymer and a preparation method thereof, and belongs to the field of polymers. Comprising the following steps: putting a mixture containing an initiator, a chain transfer agent, a solvent and vinyl acetate into a closed container, introducing ethylene gas, and carrying out pressurized polymerization to obtain the ethylene-vinyl acetate copolymer, the initiator is selected from at least one of lauroyl peroxide, benzoyl peroxide, azodiisobutyronitrile and azobisisoheptonitrile; the chain transfer agent is selected from the group consisting of 2-dimethylaminoethyl acetate and / or 2-dimethylaminoethyl propionate. The preparation method of the low-branching-degree EVA has the characteristics of mild conditions, strong controllability, simplicity in operation and large-scale application prospect. The invention also provides an ethylene-vinyl alcohol copolymer prepared from the prepared EVA through alcoholysis reaction, and the ethylene-vinyl alcohol copolymer has the characteristics of high molecular weight, narrow distribution, good appearance and the like, and meets the application requirements of commercial EVOH.

The present invention relates to a precise lactation feed for lactating sows, and 100 kg of the feed product comprises the following raw materials by weight: 20 to 28 kg of soybean meal, 2 to 5 kg of fish meal, 2 to 5 kg of MCT microcapsules, 0.2 to 0.4 kg of rumen protected methionine, 0.1 to 0.2 kg of rumen protected tryptophan, 1.5 to 2.5 kg of inulin, 1 to 2 kg of sodium lignin sulfonate, 0.01 to 0.03 kg of a fenugreek seed extract, 1.2 to 1.8 kg of sn-2 palmitate, 0.4 to 0.6 kg of alpha-ketoglutaric acid, 0.08 to 0.12 kg of glycine iron, and the balance of water. The feed is prepared from the following raw materials by weight: 0.15-0.25 kg of zinc methionine, 4-8 kg of wheat bran, 1.2-1.8 kg of a calcium propionate solution, 2-3 kg of lactic acid bacteria fermentation liquor, 0.2-0.4 kg of a rosemary extract and the balance of corn, wherein the total weight of the raw materials is 100 kg. The feed is a precise nutrition regulation feed formula for the sows in the lactation period, and milk yield increase, piglet weaning performance optimization and sow body condition protection are achieved through multi-dimensional nutrition intervention.

The invention relates to the technical field of medical biology, and discloses a composition for promoting interaction of collagen and hyaluronic acid, which comprises collagen, hyaluronic acid and a chemical cross-linking agent. According to the preparation method of the composition for promoting interaction of the collagen and the hyaluronic acid and the application of the chemical cross-linking agent N (beta maleimido) propionate, a stable chemical bond is formed between the collagen and the hyaluronic acid, and the molecular structure is optimized, so that the composition is easier to penetrate through the cuticle of the skin, and the interaction of the collagen and the hyaluronic acid is promoted. Physical treatment of ultrasonic waves and a high-voltage pulse electric field accelerates formation of a compound, the skin barrier is reduced through mechanical and electroporation effects, conditions are provided for deep penetration of the compound, particles are refined through the cavitation effect of the ultrasonic waves, and uniformity and fluidity are improved; the electroporation effect of the high-voltage pulsed electric field increases the permeability of cell membranes, an additional permeation path is provided for the compound, and the comprehensive measures effectively improve the transdermal absorption efficiency and the biological activity of the compound.

The invention discloses a two-component polyurethane heat-conducting structural adhesive and a preparation method thereof, and relates to the technical field of polyurethane heat-conducting structural adhesives. The coating comprises a component A and a component B, the component A is prepared from the following components in parts by mass: 40 to 50 parts of modified polycarbonate polyol, 30 to 40 parts of modified polyether polyol, 15 to 25 parts of modified aluminum oxide filler and 1 to 3 parts of silane coupling agent; the modified polycarbonate polyol is obtained by adding 2-sulfonic terephthalic acid and a first catalyst into polycarbonate polyol; the modified polyether polyol is obtained by adding 3-phenylpropionic acid p-nitrophenyl ester and a second catalyst into polyether polyol; the modified aluminum oxide filler is obtained by adding an aluminum oxide filler into potassium perfluorooctane sulfonate; the component B is prepared from the following components in parts by mass: 20 to 30 parts of diphenylmethane diisocyanate, 40 to 50 parts of modified polycarbonate polyol, 1 to 3 parts of a dewatering agent and 20 to 30 parts of modified aluminum oxide filler. The two-component polyurethane heat-conducting structural adhesive prepared by the invention has better flexibility and impact resistance, and the stability of the two-component polyurethane heat-conducting structural adhesive is improved.

The invention belongs to the technical field of building materials, and provides an early-strength cement-based grouting material and a preparation method thereof.The early-strength cement-based grouting material is prepared from, by weight, 500-600 parts of sulphoaluminate cement, 200-300 parts of Portland cement, 40-100 parts of lithium slag, 1-3 parts of a coagulant, 0.5-1 part of an early strength agent, 5-8 parts of a water reducing agent, 0.5-2.5 parts of a thickening agent, 0.3-0.9 part of a defoaming agent and 260-310 parts of water; the coagulant is sodium metaaluminate and / or potassium metaaluminate; the early strength agent is selected from one or more than two of lithium carbonate, lithium sulfate, calcium formate, calcium acetate, calcium propionate, calcium butyrate and nano silicon dioxide. According to the technical scheme, the problems of poor dispersion resistance and low early strength of a cement-based grouting material in a flowing water environment in the prior art are solved.

The invention relates to a method for controlling wheat septospora which is resistant to a C14-demethylase inhibitor fungicide. The present invention relates to a method for controlling wheat septospora on a cereal plant, which wheat septospora comprises at least one mutation in the CYP51 gene and is resistant to a C14-demethylase (in sterol biosynthesis) inhibitor fungicide (DMI fungicide), the method comprises applying to these plants, seeds or soil of the plants a fungicidally effective amount of (I) methyl 2-[2-chloro-4-(4-chlorophenoxy) phenyl]-2-hydroxy-3-(1, 2, 4-triazol-1-yl) propionate or (II) 2-[2-chloro-4-(4-chlorophenoxy) phenyl]-2-hydroxy-3-(1, 2, 4-triazol-1-yl) propionic acid.

The invention relates to the technical field of water purification, in particular to an integrated iron and manganese removal water treatment process which comprises the following steps: raw water aeration and coagulation treatment, iron removal, ammonia nitrogen removal and manganese removal, and the raw water aeration and coagulation treatment step is as follows: raw water is subjected to aeration treatment after being pre-oxidized by ozone; the raw water subjected to aeration treatment is input into a reaction tank, a coagulant is added into the reaction tank, the dosage of the coagulant is 8-20 mg / L, the contact time of the raw water subjected to aeration treatment and the coagulant is 20-300 s, and primary treatment water is prepared; the coagulant is prepared from the following raw materials in parts by weight: 8 to 12 parts of polyacrylamide, 2 to 4 parts of organic soluble sol and 0.4 to 0.8 part of trimethylolpropane tri [beta-(aziridinyl) propionate]. The device has the advantage of improving the precipitation rate of insoluble impurities in underground water.

A polyelectrolyte hydrogel coating with strong substrate binding performance and a method of manufacturing the same are provided. The method includes: 1) activating a substrate by applying oxygen plasma; and 2) dissolving a polycationic polymer, a polymeric monomer, a silane coupling agent and an initiator to obtain a precursor solution, vacuumizing the precursor solution to remove air bubbles, applying the vacuumized precursor solution to a surface of the substrate activated by the oxygen plasma, and performing an in-situ polymerization and curing process under nitrogen or rare gas atmosphere. The polymeric monomer includes at least one of: acrylamide, acrylic acid, hydroxyethyl methacrylamide, 2-acrylamido-2-methyl-1-propanesulfonic acid, polyethylene glycol (diol) diacrylate, 2-methacryloxyethylphosphocholine, 3-[[2-(Methacryloyloxy)ethyl]dimethylammonio]propane-1-sulfonate, and 3-[[2-(methacryloyloxy)ethyl]dimethylammonium] propionate. The silane coupling agent has a carbon-carbon double bond functional group.

A pest control composition includes from about 4 wt % to about 10 wt % of sodium lauryl sulfate; one or more C5 to C9 hydrotropic salt; from about 1 wt % to about 10 wt % of one or more active ingredients selected from the group consisting of corn mint oil, peppermint oil, spearmint oil, rosemary oil, thyme oil, citronella oil, clove oil, cedarwood oil, cinnamon oil, geranium oil, eugenol, 2-phenylethyl propionate, menthol, menthone, thymol, carvone, camphor, methyl salicylate, p-cymene, linalool, geraniol, cinnamyl acetate, cinnamic alcohol, cinnamaldehyde, citronellol, eucalyptol / 1,8-cineole, alpha-pinene, bornyl acetate, gamma-terpinene, and combinations thereof; and from about 60 wt % to about 95 wt % of water. The pest control composition exhibits a water peak in a 2H spectrum having a width encompassing 90% of the area of the entire water signal of about 50 Hz or more, as determined by the 2H NMR Method.

The invention is directed to a crosslinkable polyethylene composition comprising an additive composition consisting of polyethylene glycol and a mixture of 4,4′-thiobis (2-tertbutyl-5-methylphenol) plus thiodiethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate].

The invention relates to the technical field of pesticide production, and particularly discloses a preparation process of glufosinate-ammonium intermediate 3-(methyl hydroxyl phosphonyl) propionaldehyde. The preparation method comprises the following steps: 1, carrying out addition reaction on diethyl methylphosphonite and acrylic acid in absolute ethyl alcohol to generate 3-[ethyoxyl (methyl) phosphonyl] propionate; in the second step, 3-[ethyoxyl (methyl) phosphonyl] propionate is subjected to a hydrosilylation reaction in an oriented mode, and 3-triethyl siloxy-3-ethyoxyl propyl methyl ethyl phosphonate is generated; and 3, carrying out a simple dilute acid hydrolysis reaction to obtain the 3-(methyl hydroxyl phosphonyl) propionaldehyde. According to the method, a three-step reaction route of addition-hydrosilylation-hydrolysis is adopted, and the acrylic acid is used for replacing the traditional high-toxicity raw material acrolein, so that the toxicity risk is avoided from the source, the yield of the target glufosinate-ammonium intermediate is remarkably improved, the total yield of the three-step reaction can reach 95% or above, and the method is suitable for industrial production. And an efficient and green brand-new technical scheme is provided for large-scale production of glufosinate-ammonium.

The invention relates to a preparation method of 3-ethoxy isoamyl propionate, and belongs to the technical field of organic solvent synthesis. The preparation method of the 3-ethoxy isoamyl propionate comprises the following steps: S1, adding ethanol, a polymerization inhibitor and a catalyst A into a reaction kettle, heating to 40-55 DEG C, then dropwise adding ethyl acrylate, preserving heat, and carrying out addition reaction for 1-3 hours to obtain a reaction mixture; s2, adding an acidic material for neutralization, and carrying out vacuum rectification to obtain ethyl 3-ethoxypropionate; s3, adding ethyl 3-ethoxypropionate and a catalyst B into a reaction kettle, heating to 100-120 DEG C, introducing isoamyl alcohol, controlling the reaction temperature to 100-115 DEG C, and carrying out transesterification for 2.5-4 hours to obtain a crude product; and S4, cooling to stop the reaction, separating to remove the catalyst B, and carrying out reduced pressure rectification on the obtained crude product to obtain the 3-ethoxypropionic acid isoamyl ester. The method has the effects of mild process, high conversion rate and high product yield.

An electrochemical apparatus includes a separator, a positive electrode plate, and an electrolyte solution, where the separator includes a porous layer, and an average pore diameter of the porous layer is 0.5 μm to 18 μm; the electrolyte solution includes propyl propionate, and based on a mass of the electrolyte solution, a mass content of propyl propionate is 25% to 55%; and the positive electrode plate includes a positive active material layer, the positive active material layer includes a conductive agent, the conductive agent includes at least one of conductive carbon black or Ketjen black, and a specific surface area of the conductive agent is 600 m2 / g to 1100 m2 / g.

The invention belongs to the technical field of oil exploitation, and particularly relates to a fracturing fluid thickening agent as well as a preparation method and application thereof. The preparation method comprises the following steps: adding aminomethane tripropionic acid, ethanol and allyl chloride into a first reactor, carrying out a heat preservation reaction, and carrying out reduced pressure distillation to obtain a first functional monomer; adding 3-amino-1, 5-naphthalene disulfonic acid disodium salt, ethanol and allyl chloride into a second reactor, carrying out a heat preservation reaction, and carrying out reduced pressure distillation to obtain a second functional monomer; adding acrylamide, 1, 5-hexadiene-3, 4-diol, 3-[(3-acrylamidopropyl) dimethylammonium] propionate, a first functional monomer, a second functional monomer, monopotassium phosphate and water into a third reactor, dropwise adding an initiator, carrying out heat preservation reaction, adding ethanol, separating out precipitate, centrifuging to obtain a solid, and drying overnight to obtain the thickening agent. The thickening agent provided by the invention has the advantages of high apparent viscosity, strong shear resistance and strong antibacterial ability.

The invention relates to the field of polyethylene composite fibers, and discloses an antibacterial halogen-free flame-retardant reinforced cross-linked polyethylene composite fiber and a preparation method thereof.The composite fiber is prepared from linear low-density polyethylene resin, modified magnesium hydroxide, a silver-loaded zirconium phosphate inorganic antibacterial agent, tetra [beta-(3, 4, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, the composite material is prepared from the following components: 1, 3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester antioxidant, dicumyl peroxide cross-linking agent, hydrogenated castor oil dispersing agent and industrial white oil solvent. The modified magnesium hydroxide is prepared from magnesium hydroxide, deionized water, stearic acid and a sodium hydroxide solution. The composite fiber disclosed by the invention has relatively good mechanical property, antibacterial property and flame retardance.

The invention relates to phosphine ligands and their use in the carbonylation of acetylene / ethylene for the synthesis of acrylate / propionate. The phosphine ligands according to the invention are represented by formulas I to VIII. The invention describes the use of these phosphine ligands in combination with palladium catalysts for carbonylation reactions of acetylene or ethylene for the production of acrylate or propionate compounds. The processes are characterized by high catalytic efficiency, excellent product yields, outstanding selectivity, and ease of implementation. Particular advantages include improved reaction kinetics due to the optimized ligand structures, economical process control due to high catalyst productivity, and a broad range of applications for various acrylate and propionate derivatives. The invention is particularly suitable for industrial synthesis processes in fine chemical production.

The invention relates to long-life turbine oil for an ammonia-resistant turboset and a preparation process of the long-life turbine oil. The complexing agent comprises an antioxidant, an anti-rust agent, an anti-wear reagent at extreme pressure, a metal deactivator, a demulsifier, an alkali-resistant stabilizer and base oil, the antioxidant comprises at least two of dinonyl diphenylamine, beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) isooctyl propionate and dialkyl dithiocarbamate, the demulsifier comprises at least two of dialkyl dithiocarbamate, and the alkali-resistant stabilizer comprises at least two of dialkyl dithiocarbamate. The anti-wear reagent at extreme pressure comprises at least two of tricresyl phosphate, thiophosphate and amine salt derivatives thereof, and phosphate and amine salt derivatives thereof, and the alkali-resistant stabilizer comprises polycarboxylic polyether and aliphatic amines. The preparation method comprises the following steps: sequentially adding the components, heating, stirring, mixing at constant temperature, cooling and filtering.

This invention discloses a method for eliminating moss growth on macadamia nut leaves, relating to the field of agricultural planting technology. The specific method involves spraying a moss-removing agent onto the macadamia nut leaves during the moss occurrence period, applying moss inhibitor I to the main stem, and applying moss inhibitor II to the soil surface around the main stem. The moss-removing agent comprises the following raw materials in parts by weight: 40-50 parts of allicin, 15-24 parts of urea, 5-18 parts of calcium propionate, 20-27 parts of calcium sulfate, 10-17 parts of calcium chloride, 20-35 parts of vegetable oil, 1-10 parts of titanium dioxide, 1-5 parts of glutathione, and 1-3 parts of dispersant. This invention solves the problems of slow effectiveness, short duration of action, and low plant safety in current macadamia nut leaf moss control methods, achieving highly efficient control.

This invention discloses a single-component moisture-curing conductive and thermally conductive adhesive and its preparation process, comprising the following raw materials in parts by weight: 100 parts SMP adhesive; 15-30 parts flake silver powder; 500-900 parts spherical silver-coated copper powder; 0-400 parts dendritic silver-coated copper powder; 10-20 parts decamethyltetrasiloxane; 1-1.5 parts β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate isooctyl ester; 7.5-10 parts N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane; and 1-1.5 parts vinyltrimethoxysilane. This invention allows the adhesive to cure at room temperature / low temperature using moisture in the air, eliminating the need for temperatures above 120°C. This completely avoids thermal stress damage to heat-sensitive substrates such as plastics, flexible circuit boards, and PET / PI films, making it perfectly suited for low-temperature processing scenarios such as flexible electronics manufacturing, wearable devices, and flexible sensors.

The invention belongs to the technical field of pesticide preparation, and provides a trifloxysulfuron sodium and haloxyfop-R-methyl dispersible oil suspending agent for antigen drug decomposition, which comprises the following components in percentage by mass: 1-5% of trifloxysulfuron sodium, 1-30% of haloxyfop-R-methyl, 5-15% of isomeric alcohol polyoxyethylene polyoxypropylene ether, 5-15% of polyoxyethylene sorbitan fatty acid ester, 5-15% of isomeric alcohol polyoxyethylene polyoxypropylene ether, 5-15% of isomeric alcohol polyoxyethylene polyoxypropylene ether, 5-15% of isomeric alcohol polyoxyethylene polyoxypropylene ether, 5-15% of isomeric alcohol polyoxyethylene polyoxypropylene ether, 5-15% of isomeric alcohol polyoxyethylene polyoxypropylene ether The oil-in-water emulsion is prepared from the following components in percentage by weight: 2 to 10 percent of docusate sodium, 1 to 3 percent of 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecanol propionate, 0.5 to 2 percent of triazine-piperidine condensate, 1 percent of fumed silica and 40 to 80 percent of carrier oil phase, through scientific proportioning of the components, the stability problem of the trifloxysulfuron sodium in the preparation is effectively solved, the heat storage stability is remarkably improved (the decomposition rate of the trifloxysulfuron sodium is lower than 5% at 54 DEG C for 14 days), meanwhile, the weeding spectrum is expanded, the weeding activity is enhanced, the weeding composition has an excellent control effect on weeds in farmlands such as cotton fields and the like, and the preparation is environment-friendly and has wide application prospects. The composition is safe to crops and has remarkable economic benefits and social benefits.

This invention discloses a strain of *Propionibacterium freundii* and its application in propionic acid production. The strain was deposited at the China Center for Type Culture Collection on October 22, 2025, with accession number CCTCC M 20252289. This invention obtains a high-propionic acid-producing *Propionibacterium freundii* strain through screening from nature. Its 16S RNA was identified as *Propionibacterium freundii*. This strain is a safe edible strain approved by the Ministry of Health. Through optimization of its culture and fermentation conditions, the final propionic acid yield can reach over 50 g / L, the glucose conversion rate can reach 60%, and there is no lactic acid accumulation, meeting the requirements of industrial production. Furthermore, through fermentation optimization, the content of other acids can be effectively controlled, resulting in propionate products of different specifications that meet market demands.

The invention relates to an exterior material for a power storage device, a sealant film, an exterior case for a power storage device, and a power storage device. The present invention addresses the problem of providing an exterior material for a power storage device, which has high sealing strength and is capable of suppressing the generation of air bubbles. An exterior material for a power storage device, in which a base material layer, a barrier layer, an adhesive layer, and a sealant layer are laminated in this order, at least one layer included in the adhesive layer and the sealant layer is a layer having a degree of swelling in an electrolyte solution satisfying 12%-40%, and the electrolyte solution is a mixed solution in which diethyl carbonate (DEC) / propyl propionate (PrPr) in a mass ratio of 1: 1.

The application discloses a polyacid zeolite imidazolate framework loaded monatomic catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. The preparation method of the catalyst is as follows: (1) preparing a zeolite imidazolate framework material; (2) mixing the dried zeolite imidazolate framework material and a metal salt in a solvent and stirring; then adding a heteropoly acid, controlling the pH in the system to be 5-7, and performing a solvothermal reaction under the condition of 80-120 DEG C; after the reaction is completed, cooling and centrifugal separation are performed to obtain a precipitate; and (3) performing calcination treatment on the precipitate to obtain the polyacid zeolite imidazolate framework loaded monatomic catalyst. The polyacid zeolite imidazolate framework loaded monatomic catalyst prepared by the method has high catalytic activity, high selectivity and good cycle stability, and has a good application prospect in acetyl propionate esterification reaction.