355 results about "Microemulsion" patented technology

The invention relates to the technical field of nano materials, and particularly discloses a preparation method of surface modified nano calcium carbonate for a battery diaphragm coating. According to the method, the technical paths of microemulsion confinement crystal form regulation and control, gradient surface modification and boehmite compounding and porosity regulation and control are fused, and the functional nano calcium carbonate adaptive to the battery diaphragm coating is prepared. According to the technical scheme, limestone is used as a raw material, after calcination and digestion, the particle size of nano calcium carbonate is controlled through microemulsion carbonization (a cyclohexane-span 80-n-butyl alcohol system); a silane coupling agent KH560-KH570 is adopted for gradient modification to introduce an electrophilic functional group, boehmite is compounded to form a composite coating, and the porosity is regulated and controlled by adjusting the solid content in coating slurry and the coating speed. The method is stable in process and high in compatibility, and meets the requirements of diaphragm coatings of lithium ion batteries and solid-state batteries.

The invention relates to a bactericidal composition containing fluxapyroxad and thiediazole copper. The bacterial composition is compounded from fluxapyroxad and thiediazole copper in a binary mode, wherein a mass ratio of fluxapyroxad to thiediazole copper is (1-50) to (50-1); a mass fraction of fluxapyroxad and thiediazole in the preparation is 1%-80%, and the rest of the preparation is auxiliary components which are allowed to use and are acceptable in a pesticide. A dosage form of the bactericidal composition is missible oil, a suspending agent, wettable powder, a water dispersible granule, emulsion in water, microemulsion, a granule and a micro-capsule. The bactericidal composition is mainly used for controlling plant gray mold, peronospora and phytophthora germs.

The invention relates to the technical field of oilfield chemistry, in particular to an aminoethanesulfonic acid type surfactant and a preparation method and application thereof.The preparation method of the aminoethanesulfonic acid type surfactant comprises the steps that firstly, fatty amine is dissolved in a first solvent, a sodium chloroethanesulfonate aqueous solution is added, and N-long-chain alkyl-2-sodium aminoethanesulfonate is obtained through a reaction; and 2, dissolving a required amount of N-long-chain alkyl-2-sodium aminoethanesulfonate in a second solvent, adding a required amount of methyl acrylate, and reacting to obtain the aminoethanesulfonic acid type surfactant. The aminoethanesulfonic acid type surfactant disclosed by the invention contains long-chain alkyl, amino, ester groups and sulfonic acid groups, so that the aminoethanesulfonic acid type surfactant has good surface activity and can meet the development requirements of oil and gas fields. The microemulsion cleanup additive prepared from the aminoethanesulfonic acid type surfactant can effectively reduce the surface tension and the interfacial tension of an aqueous solution, and the preparation method is easy and convenient to operate, mild in condition and suitable for industrial production.

The application discloses a bacteriostatic and acne-removing microemulsion containing plant extracts and a preparation method thereof. The bacteriostatic and acne-removing microemulsion contains a microemulsion loaded with quercetin alone, a microemulsion loaded with sasanquasapernin alone, and a microemulsion loaded with quercetin and sasanquasapernin simultaneously. The bacteriostatic and acne-removing microemulsion containing plant extracts prepared by the application not only solves the problems of stickiness of camellia oil and poor solubility of quercetin, but also has a synergistic inhibitory effect on propionibacterium acnes, achieves the same high-efficiency bacteriostatic effect with a lower drug concentration, saves drug cost, reduces drug irritation, and expands the application of quercetin and sasanquasapernin in the cosmetic and pharmaceutical fields due to the rich pharmacological effect of the plant extracts, low side effect and safety. The microemulsion system prepared by the application is clear, transparent, uniform and stable, the preparation process is simple, the required energy is low, the cost is low, and the system is beneficial to commercial production.

The invention provides a silica hydrogel, a method for removing the same, and a silica hydrogel film. A silica-based composite material modified by an alkyl amine group NH2L and an organic alkyl group R is prepared by adopting a reversed-phase microemulsion method, and a silica colloid material highly modified by an organic group is obtained by controlling the molar weight of alkyl amine silane and alkyl silane and controlling no use and no contact of any alcohol solvent in the whole preparation process. Adding acetone for demulsification, centrifugally collecting, washing solids, drying to obtain a solid silicon dioxide colloid material, and dissolving the solid silicon dioxide colloid material in deionized water to obtain the silicon dioxide hydrogel. The silica hydrogel has solubility in an alcohol solvent and can be removed by the alcohol solvent. The silicon dioxide hydrogel can be combined on the surface of a membrane material to obtain a silicon dioxide hydrogel membrane.

The invention relates to an application of D-camphor and cymenin in preparation of an anti-inflammatory soothing preparation for sensitive skin. The invention discloses an application of D-camphor and cymenin as only two effective components in preparation of an anti-inflammatory soothing preparation for sensitive skin. The invention further discloses an anti-inflammatory soothing preparation for sensitive skin, only two effective components of the anti-inflammatory soothing preparation for sensitive skin are D-camphor and cystin, and the anti-inflammatory soothing preparation for sensitive skin can reduce the reaction of IL-6, IL-8 and NO related microinflammation in a keratinocyte inflammation model. The invention has the following beneficial effects: 1, in a high proportion window (5-10: 1) of D-camphor and polycymenin, the inhibition of the compound system of D-camphor and polycymenin on IL-6, IL-8 and NO is superior to that of any monomer; 2, stable dispersion and good use experience can be realized through the micro-emulsion type emulsifying essence or the face cream carrier, and meanwhile, the face cream still has feasibility under the conditions of no essence and no conventional preservative.

A novel formulation of trinexapac-ethyl is described. The formulation can be applied at higher concentrations and form a stable emulsion or lower concentrations and form a stable micro-emulsion. The formulation has greater than 400 grams of active ingredient per liter. The formulation can be applied in all situations where trinexapac-ethyl is used.

The application belongs to the technical field of fine chemical industry, and particularly relates to a cationic microemulsion water-repellent quick-drying agent and a preparation method and application thereof. The cationic microemulsion water-repellent quick-drying agent is prepared by using Arquad 2C-75 (dicoconut alkyl dimethyl ammonium chloride) as a core cationic component, compounding refined white oil, matching a surfactant, a coupling agent and deionized water to construct a microemulsion system, mixing an oil phase, preparing a water phase, primary emulsifying, high-pressure homogenizing and post-treating. The product prepared by the application has a contact angle greater than 110 degrees, a sliding time shortened by more than 31.4%, is stable without precipitation in the range of-10 DEG C to 50 DEG C, has a viscosity less than 100 cP and can be dissolved and used immediately, is compatible with an anion system, has no ethanol / toluene solvent, VOCs detection meets the limit value of GB38508-2020, and has excellent performance in water-repellent quick-drying on the surface of an automobile and a wide application range.

The invention relates to the technical field of biological medicine, and discloses rapamycin-loaded microemulsion gel as well as a preparation method and application thereof. The preparation method of the microemulsion gel comprises the following steps: dissolving N, N-dimethyl octadecyl carboxymethyl chitosan in a water phase, then adding an oil phase, a cosurfactant and rapamycin, and stirring to obtain rapamycin-loaded microemulsion; the preparation method comprises the following steps: dissolving a high polymer material in a PBS solution, heating until the high polymer material is completely dissolved, then adding dopamine, stirring for reaction, and finally dialyzing and freeze-drying to obtain the adhesive. And adding a gel matrix containing a thickening agent and an adhesive into the microemulsion, and stirring to obtain the rapamycin-loaded microemulsion gel. According to the prepared microemulsion gel, transdermal drug delivery of hydrophobic drugs is achieved, testis are coated with the microemulsion gel loaded with rapamycin, the blocking effect of damp-heat stress on differentiation and development of testis interstitial cells can be relieved, and the functionality of a male reproduction endocrine system is recovered.

The application discloses a food-grade O / W quercetin microemulsion and a preparation method and application thereof, and each component and weight percentage are as follows: 10%-42% of a surfactant, 2%-32% of an oil phase solution, and the balance of water; wherein the oil phase solution is composed of isopropyl myristate and ethanol, and the weight ratio of isopropyl myristate to ethanol is 1:1-4. The O / W microemulsion preparation method is simple, is a good carrier of active substances or functional substances represented by quercetin which has poor stability and water solubility, so that the stability of the active substances or functional substances in pharmaceutical preparations is improved, and the sustained release behavior is improved.

The present application relates to a kind of coix seed active ingredient extraction method and its steady-state microemulsion and its preparation method and application, the extraction method includes the following steps: b.coix seed coarse powder is added distilled water and mixed to form feed liquid, alpha-amylase is added, enzyme hydrolysis reaction is carried out, and extraction is carried out by ultrasonic treatment, and coix seed active ingredient extract is obtained;Wherein, the enzyme hydrolysis reaction temperature is 40~50 ℃.The present application aims to provide a kind of efficient, green, low-cost coix seed active ingredient extraction method, improves the extraction rate and retention rate of active ingredient, improves product stability, more suitable for industrial production.

This invention discloses a mild and stable temperature-responsive microemulsion composition, its preparation method, and its applications, belonging to the fields of cosmetics and pharmaceutical technology. This invention uses a nonionic decyl glucoside and anionic sodium lauroyl glutamate, introducing tocopherol polyethylene glycol succinate and disodium EDTA, forming a dual stabilizing mechanism of "antioxidant + metal ion chelation," effectively protecting unstable active ingredients such as glycyrrhizin. Experiments show that in an accelerated test at 60℃, the retention rate of glycyrrhizin increased by more than 20%. The microemulsion composition prepared by this invention exhibits high stability, low irritation, and skin-targeted sustained-release properties.

The present application relates to a kind of insecticidal compositions containing flonicamid and celangulin, wherein the weight percentage of effective component flonicamid and celangulin is 1-80:10-0.1, which can be further preferred as 10-60:5-0.1.The total mass of two effective components flonicamid and celangulin accounts for 1%-90% of the mass of the entire preparation, which can be further preferred as 10-60%, and the rest is the common adjuvant or filler in pesticides.The insecticidal composition of the present application can be prepared into suspension concentrate, water dispersible granules, water emulsion, microemulsion, emulsifiable concentrate and wettable powder and other dosage forms.The present application carries out binary compounding of flonicamid and celangulin, has obvious synergistic effect, and the quick-acting and long-acting properties of pesticide are good, and reduces production cost and use cost, and is especially suitable for the prevention and treatment of thrips.

A water-in-oil microemulsion comprising water; an oil, wherein at least 80 wt%, preferably, from 80 to 100 wt%, more preferably, from 80 to 95% of the oil is a silicone oil, ester oil, and / or a linear or branched alkane comprising 8 to 34 carbons; and a liquid non-ionic surfactant having an HLB from 7 to 13, wherein a weight ratio of the non-ionic surfactant to the oil is from 10:1 to 1.5:1, wherein the water-in-oil microemulsion is transparent and mono-phasic, and wherein the pH of the emulsion is between from 4.5 to 7.5.

The invention discloses a heavy non-aqueous phase liquid pollution remediation precursor solution, a preparation method and a remediation method. The heavy non-aqueous phase liquid pollution remediation precursor solution comprises 5-10 parts by volume of a surfactant, 1-5 parts by volume of a cosurfactant and 80-90 parts by volume of water; the surfactant is prepared from the following components in parts by volume: 10 to 20 parts of an oleophylic nonionic surfactant, 10 to 20 parts of an oleophylic hydrophilic nonionic surfactant and 50 to 75 parts of a gemini type surfactant; the cosurfactant is one or a combination of two of alkenylene benzene sulfonate and thiourea. According to the precursor solution, a surfactant and a cosurfactant are mixed to form a microemulsion precursor solution, the microemulsion precursor solution is injected into an underground environment, and residual phase DNAPLs in an aquifer is used as an oil phase to form an in-situ microemulsion, so that the purpose of efficiently removing the DNAPLs is achieved.

The invention discloses a preparation method of a high-acrylic-acid-content polyacrylamide / acrylic acid copolymer emulsion for improving the recovery efficiency of a high-temperature and high-salt oil reservoir, and belongs to the technical field of oilfield chemistry and functional polymer materials. According to the method, a reversed-phase microemulsion polymerization system is adopted, a combination of a cationic surfactant hexadecyl trimethyl ammonium bromide and an amphiphilic initiator azodiisobutyronitrile is introduced, an electrostatic enrichment effect is generated at a water core interface, and acrylate anions are selectively adsorbed and locally concentrated, so that the reactivity rate of a monomer is regulated and controlled, and the amphiphilic polymer is prepared. And the grafting proportion of acrylic acid in the copolymer is obviously improved. The method is simple in process and mild in condition, and the obtained emulsion has the advantages of being high in solid content, good in storage stability, fast in dissolution, free of fisheye and the like, is suitable for high-temperature and high-salinity oil reservoir conditions and has good industrial application prospects.

The invention relates to a microemulsion type suckercide as well as a preparation method and application thereof, the microemulsion type suckercide comprises the following components in percentage by weight: 30% of mixed ester alcohol component, 10% of absolute ethyl alcohol, 5% of n-butyl alcohol, 25% of emulsifier and 30% of water; the mixed ester alcohol component comprises 36 to 54.6 percent of n-caprylic alcohol, 45 to 63.9 percent of n-decanol and 0.1 to 0.4 percent of dodecanol, and the emulsifier is preferably polyoxyethylene 40 hydrogenated castor oil. The microemulsion type suckercide can be applied as a tobacco suckercide, when the suckercide is applied to tobacco suckercide, the dilution multiple is 8 times, the application method is cup spraying suckercide, and the dosage of the diluted suckercide per plant is 25 mL. The microemulsion type suckercide is green in formula, has an efficient suckercide effect on tobacco, is long in lasting period, does not contain components such as pendimethalin, butralin and flumetralin, and avoids the problem that chemical pesticide residues in tobacco leaves exceed the standard after an existing chemical suckercide is applied.

The invention discloses a microemulsion collecting agent applying jatropha curcas oil to low-rank coal flotation and preparation and application of the microemulsion collecting agent, and belongs to the technical field of low-rank coal flotation, the microemulsion collecting agent is composed of jatropha curcas oil biodiesel, a surfactant, a cosurfactant and water, and the preparation method of the microemulsion collecting agent comprises the steps that 1, crude jatropha curcas oil and methyl alcohol are subjected to transesterification in the presence of a basic catalyst, the jatropha curcas oil biodiesel is obtained; (2) dissolving a surfactant in water to prepare a solution; (3) mixing the jatropha curcas oil biodiesel with a surfactant solution, adding a cosurfactant, and stirring at room temperature to form a microemulsion; and (4) the microemulsion is filtered, and the microemulsion collecting agent is obtained. The collecting agent solves the problems that a low-order bituminous coal flotation collecting agent is low in selectivity, poor in collecting performance, large in agent dosage, low in clean coal yield and high in ash content, and has good industrial application and popularization prospects.

The application belongs to the technical field of secondary batteries, and more particularly relates to a low-temperature microemulsion electrolyte, a preparation method and application thereof. The low-temperature microemulsion electrolyte comprises an electrolyte salt, a symmetrical cyclic ether solvent, a highly chlorinated solvent insoluble in the symmetrical cyclic ether solvent, and a chlorinated ether solvent for dispersing the highly chlorinated solvent in the symmetrical cyclic ether solvent in the form of micelles. Through synergistic effect of the components, an electrolyte system with high ion conductivity, electrode interface stability and wide temperature range adaptability is constructed, effectively solving the core problems of kinetic sluggishness, poor interface stability and short cycle life of the secondary battery in an ultra-low temperature environment. The electrolyte remains liquid at -70 DEG C, and exhibits excellent cycle stability in a wide temperature range of -40 DEG C to 25 DEG C, giving the battery excellent wide temperature range adaptability, breaking the low-temperature performance bottleneck of the secondary battery, and having a broad application prospect.

The invention relates to the technical field of oil and gas field development, and particularly discloses an environment-friendly nano microemulsion retarded acid and a preparation method thereof, the environment-friendly nano microemulsion retarded acid comprises: a water phase, which is an acid-containing aqueous solution; the modified porous nano silicon dioxide powder has strong adsorbability and response release property; the retarder is formed by polymerizing acrylamide, dimethyl diallyl ammonium chloride, N-vinyl pyrrolidone, perfluoroalkyl acrylate and perfluoropolyether acrylate under the action of an initiator; an oil phase; an emulsifier; an emulsion stabilizer; and an iron ion stabilizer. The invention has the beneficial effects of high acid utilization rate, high acidity, multi-stage retarding, good acid etching effect, small damage, high acidification transformation efficiency, good safety and environmental protection property, 100-300nm emulsion particle size, good stability and no demulsification and layering after being placed at room temperature for 30 days, and the effective components of the acid liquor are wrapped by the microemulsion.

The invention discloses a colorless capsicum oleoresin microemulsion and a preparation method and application thereof, and belongs to the technical field of food processing.The preparation method of the colorless capsicum oleoresin microemulsion comprises the following steps that oil-soluble capsicum oleoresin and an emulsifier are heated, then water is added for mixing, and water-soluble capsicum oleoresin is obtained; adding an enzyme preparation into the water-soluble capsicum oleoresin, and carrying out ultrasonic enzymolysis reaction to obtain an enzymolysis solution; and carrying out enzyme inactivation treatment on the enzymolysis solution, and then centrifuging to remove precipitate to obtain supernate, namely the colorless capsicum oleoresin microemulsion. According to the method, colored capsanthin is degraded into colorless substances through mild enzymolysis reaction, and meanwhile, capsaicin molecules are prevented from being damaged. The colorless capsicum oleoresin microemulsion prepared by the invention has the advantages of high stability, improved fluidity and few impurities, and is beneficial to application in colorless or light-colored food.

The invention relates to a water-based asphalt cleaning agent and a preparation method thereof, and belongs to the technical field of environment-friendly cleaning agents. The cleaning agent is prepared from the following components in percentage by mass: 3.5 to 6.5 percent of a D-limonene oxidized derivative, 0.8 to 1.5 percent of a C4-C6 perfluoroalkyl acrylate monomer, 0.3 to 0.7 percent of a betaine type quaternization reagent, 4 to 8 percent of alkyl glycoside, 2 to 4 percent of polyglycerol fatty acid ester, 1 to 2 percent of trisodium citrate, 0.3 to 0.8 percent of polyepoxysuccinic acid, 0.02 to 0.1 percent of a photoinitiator, 0.2 to 0.6 percent of a thickening agent and the balance of deionized water. According to the method, the terpene-fluorocarbon hybrid ampholytic surfactant is generated in situ through UV illumination of a D-limonene oxidation derivative and a C4-C6 perfluoroalkyl acrylate monomer at 55-60 DEG C, and a thermodynamically stable micro-emulsion structure is formed through programmed cooling and self-assembly, so that the rapid removal capability on high-viscosity asphalt is remarkably improved.

The application provides an oral instant tablet containing Morinda citrifolia oil, which comprises the following components in parts by mass: Morinda citrifolia oil microemulsion 10 parts, carrier 30-40 parts, coating material 2-4 parts, and disintegrating agent 2-5 parts. The coating material is selected from Aeroperl and / or Sylysia; the carrier is selected from one or more of microcrystalline cellulose MCC PH101, microcrystalline cellulose MCC PH102, starch and lactose; and the disintegrating agent is selected from carboxymethyl starch sodium and / or low-substituted hydroxypropyl cellulose. The microemulsification technology is used to wrap the essential oil to reduce the volatilization of the essential oil; the microemulsion is made into a tablet to cover the acidity, increase the compliance of the public, and realize the form change of the Morinda citrifolia oil microemulsion from liquid to solid. The application studies and prepares the oral instant tablet containing Morinda citrifolia oil, which not only solves the inherent defects of traditional dosage forms, but also provides a more convenient taking mode compared with common tablets.

The application relates to a continuous manufacturing equipment of a high-breath PTFE nanofiber waterproof and moisture-permeable fabric, which comprises, sequentially arranged along a material direction, a base cloth unwinding device, a film coating device, a coagulation tank, a washing device, a first tension control device, a drying device, a cooling roller, a gluing roller, a pre-pressing device, a second tension control device, a hot-pressing device, a moisture spraying device, a curing device and a fabric winding device; further comprising a stirring device, which is used for stirring PTFE high-viscosity microemulsion to obtain uniform coating liquid and inputting the coating liquid into the film coating device; and further comprising a gluing assembly, which is used for cooperating with the gluing roller to perform a gluing process. Compared with the prior art, the application can realize continuous production of the PTFE waterproof and moisture-permeable film based on the advantage of a high-viscosity microemulsion phase separation method.

The invention relates to a temperature response type microsphere, an essential oil slow-release carrier and a preparation method thereof.The preparation method comprises the steps that 1, essential oil and a compound emulsifier are mixed to form an oil phase, and polyvinyl alcohol and N-isopropylacrylamide are dissolved in deionized water to form a water phase; then, dropwise adding the oil phase into the water phase under high-speed stirring to form a microemulsion, and carrying out interfacial polymerization reaction through heating and nitrogen protection to finally obtain the temperature response type microspheres; and (2) mixing the obtained microspheres with plant fiber powder and hydroxyethyl cellulose, and carrying out die-casting molding to form the essential oil slow-release carrier, thereby realizing the regulation of the release rate of the essential oil.

An oil-in-water microemulsion comprising water; an oil selected from an ester oil, a triglyceride, or combinations thereof; a liquid non-ionic surfactant having an HLB from 7 to 13, preferably, from 9 to 13, and more preferably, from 9 to 11; and a polyethylene glycol / polypropylene glycol / polyethylene glycol triblock polymer having an HLB value from 15 to 29, preferably, 15 to 28, and more preferably, 16 to 27, wherein the microemulsion is transparent and mono-phasic, and wherein the pH of the microemulsion is from 4.5 to 7.5, preferably, from 5 to 7, and more preferably, from 5.5 to 7.

The invention relates to the technical field of oilfield chemistry, in particular to a sulfamic acid type surfactant as well as a preparation method and application thereof.The sulfamic acid type surfactant is prepared according to the following steps: step one, after fatty amine and a first solvent are mixed, adding a 3-chloro-2-hydroxypropyl sodium sulfonate aqueous solution, and stirring to obtain a first mixture; reacting to obtain 3-(long-chain alkylamino)-2-hydroxypropane-1-sodium sulfonate; and 2, dissolving a required amount of 3-(long-chain alkylamino)-2-hydroxypropane-1-sodium sulfonate in a second solvent, adding a required amount of methyl acrylate, and reacting to obtain the sulfamic acid type surfactant. The sulfamic acid type surfactant disclosed by the invention contains long-chain alkyl, amino, ester group, hydroxyl and sulfonic acid group, so that the sulfamic acid type surfactant has good surface activity and meets the development requirements of oil and gas fields, and the microemulsion cleanup additive prepared by utilizing the sulfamic acid type surfactant has excellent water solubility and surface activity and meets the industrial use standards of non-fluorocarbon cleanup additives.

The invention belongs to the technical field of plant essential oil compositions, and particularly relates to a plant essential oil composition for fresh keeping of edible mushrooms and a preparation method of microemulsion coating liquid of the plant essential oil composition, and the plant essential oil composition is prepared from the following raw materials in parts by mass: 0.05-0.50 part of fresh ginger essential oil, 0.05-0.45 part of storax essential oil, 0.05-0.45 part of lavender essential oil and 0.05-0.45 part of star anise essential oil.