32results about How to "No precipitation" patented technology

This invention discloses a highly filled modified PP masterbatch and its preparation method, belonging to the field of polymer material modification technology. The masterbatch, by weight, consists of the following components: 25-30 parts polypropylene, 60-65 parts heavy calcium carbonate, 2-3 parts compatibilizer, 1-2 parts toughening agent, 0.3-0.5 parts compounded antioxidant, 0.5-1.0 parts lubricant, and 0.2-0.3 parts dispersant. This invention achieves a high-filling system with ≥60% calcium carbonate filling through synergistic optimization of the raw material formulation and precise control of the preparation process. This effectively solves the industry pain points of traditional highly filled modified PP masterbatches, such as filler agglomeration, precipitous decline in mechanical properties, and poor processing stability. The finished masterbatch meets national and industry acceptance standards for industrial equipment shells, automotive interior and exterior trim, and functional parts. The raw material cost is reduced by 15-25% compared to traditional modified PP masterbatches. The preparation process of this invention is simple and can achieve stable mass production using existing general-purpose modification equipment. The product qualification rate is ≥98%, demonstrating excellent economic benefits and broad application prospects.

The invention discloses a wild fruit acid soup sauce and a preparation technology thereof, and belongs to the technical field of food processing. The wild fruit soup sauce is composed of a wild fruit base sauce and a sour soup base bag, the wild fruit base sauce is prepared by compounding and pulping tomatoes, tree tomatoes, haws, tamarind fruits / olives, lemons and papayas, and passion fruits are added for aroma enhancement when the wild fruit soup sauce is eaten; the sour soup base bag is prepared by taking monosodium glutamate, chicken essence, pungent litse fruit, chili powder and the like as raw materials, frying the raw materials at 150 DEG C and boiling the raw materials for more than 20 minutes. The flavor level is improved through natural wild fruit compounding, a standardized stir-frying process guarantees mellow taste and high stability, the sauce is convenient to use and long in shelf life, the problems that traditional sour soup is single in flavor, tedious in operation and uneven in quality are solved, and the method is suitable for catering and making of various sour soup dishes in families.

This invention relates to the field of heavy metal contaminated water or soil remediation technology, and discloses the application of magnesium-based cementitious materials in heavy metal ion remediation in ultra-stable mineralized environments. This invention can achieve good heavy metal adsorption effects in a short time, without the release of toxic substances or secondary pollution, and is suitable for the remediation of heavy metal contaminated water or soil.

This invention provides a high-hygroscopic, water-free composite gel-type calcium and magnesium salt tablet and its preparation method, which is made from the following raw materials in parts by weight: 45-70 parts calcium and magnesium salt, 15-25 parts gum arabic, 3-15 parts mica powder, 2-12 parts polyethylene oxide, 0.5-2 parts sodium nitrite, and 2-30 parts gelatin. This tablet exhibits high hygroscopicity and excellent physical properties.

The invention discloses a low-free-formaldehyde sodium glutamate-based gypsum retarder as well as a preparation method and application thereof, and belongs to the technical field of building material admixtures. The preparation method comprises the following steps: by taking sodium glutamate and formaldehyde as raw materials, carrying out an addition reaction at low temperature under a weakly alkaline condition regulated by calcium hydroxide to generate an intermediate; and then heating under an acidic condition to carry out dehydration polycondensation, and neutralizing by negative pressure and lime milk to prepare the sodium glutamate-formaldehyde condensation compound. The invention also discloses a retarder composition containing the condensate and a phosphate / zinc sulfate mixture. According to the invention, the content of free formaldehyde (1t; 300 mg / kg) is obviously reduced through improvement; the problem that the strength of gypsum is reduced due to a traditional retarder is solved by using the chelation of calcium ions and zinc sulfate.

This invention discloses a pellet preparation process based on fibrous bentonite slurry-enhanced pelletizing, belonging to the field of pellet preparation technology in the iron and steel industry. The process includes: wetting iron concentrate to 2.5%~3.5% moisture content; mixing with a first portion of bentonite, followed by sequential high-intensity mixing and milling to obtain pelletizing material; feeding the material into a pelletizer; after the mother pellets are prepared, atomized spraying of fibrous bentonite slurry replaces the addition of water during pelletizing, allowing the pellets to grow to qualified green pellets. The fibrous bentonite slurry is prepared by mixing a second portion of bentonite and water at a mass ratio of 1:5~20, and stirring for 4~6 minutes at a revolution speed of 120~130 r / min and a rotation speed of 280~290 r / min. This invention achieves uniform distribution of bentonite within the pellets through graded moisture control and precise spraying, reducing the total bentonite usage from 1.6% to 1.2% while ensuring pellet quality, significantly reducing bentonite consumption and achieving cost reduction, efficiency improvement, energy conservation, and emission reduction in pellet production.

The application discloses a kind of chopped carbon fiber reinforced fluorine-containing resin composite material and preparation method and application, belong to composite material preparation technical field, the application includes: to chopped carbon fiber is sequentially carried out surface activation treatment, homogeneity coating treatment and chemical bonding treatment, to be gradually structured interface bonding layer on the surface of chopped carbon fiber;The treated chopped carbon fiber is mixed with fluorine-containing resin matrix, and extrusion forming is obtained, and composite material is obtained.The application is sequentially carried out surface activation, homogeneity coating and the three-step synergistic modification of chemical bonding, first activation provides reaction site, then pass through homogeneity coating and eliminate the interface energy difference between fiber and matrix, finally pass through chemical bonding and lock interface, and gradually structured interface layer of strong combination, effectively solve the problem that chopped carbon fiber and fluorine-containing resin interface compatibility is poor, and easily peeling, realize the significant improvement of the mechanical properties of composite material.

This invention relates to the field of health food, specifically to a solid beverage for assisting in lowering blood pressure and blood lipids and its preparation method, comprising: 40-45% traditional Chinese medicine extracts, 50-55% food ingredients, and the remainder being excipients; 10-15 parts red yeast rice extract, 5-10 parts hawthorn extract, 5-10 parts gastrodia elata extract, 5-10 parts salvia miltiorrhiza extract, 1-5 parts alisma plantago-aquatica water extract, and 1-5 parts poria cocos water extract; 15-20 parts oat β-glucan powder, 10-15 parts resistant dextrin, 5-10 parts phytosterol micronized powder, and 5-10 parts freeze-dried fruit powder. This solid beverage combines extracts of medicinal and edible herbs such as red yeast rice, salvia miltiorrhiza, and hawthorn with food ingredients, without the addition of chemically synthesized drugs, avoiding the risks of drug interactions and potential side effects, conforming to the principle of food and medicine sharing the same origin, and thus having higher consumer acceptance and compliance.

This invention discloses a method for improving the stability of flavonoids in buckwheat liquor. First, buckwheat flavonoids are microencapsulated with α-cyclodextrin to form a first physical barrier. Simultaneously, herbal extracts rich in C-glycoside flavonoids (bamboo leaves, bamboo leaves, kudzu root, etc.) are prepared and added to the buckwheat liquor along with the microencapsulated buckwheat flavonoids, controlling the mass ratio of C-glycoside flavonoids to buckwheat flavonoids to be 1:4 to 1:15. After accelerated storage at 50℃ for 90 days, the flavonoid retention rate of the buckwheat liquor reached as high as 92.3%, significantly better than single α-microencapsulation technology (81.4%) and single C-glycoside flavonoid technology (77.5%). Simultaneously, the liquor is clear and transparent, with no sediment formation.

The present application relates to the technical field of moisture removal of electrical cabinet, in particular to a kind of electrical cabinet micro-positive pressure moisture removal and anti-condensation method, using the structural design of "centralized manufacturing dry clean air+preset minimum air supply flow", by centralized manufacturing dry clean air into electrical cabinet, by setting minimum air supply flow, form not less than 50 Pa micro-positive pressure in electrical cabinet, prevent moisture and dust into cabinet, realize electrical cabinet micro-positive pressure moisture removal;Meanwhile by detecting the temperature, humidity and cabinet pressure in and inner wall of electrical cabinet, and the temperature, humidity and air pressure outside electrical cabinet, and calculate the current dew point temperature in cabinet, according to the current humidity in cabinet and the dew point temperature distribution of each place, adjust the dry clean air flow into cabinet, make the relative humidity in cabinet long-term keep below 60%RH, to effectively dehumidify, make the dew point temperature of each place in cabinet be below ambient temperature 5℃ or more, prevent condensation in cabinet.

This invention discloses a fermented traditional Chinese medicine product, its preparation method, and its application, belonging to the field of traditional Chinese medicine fermentation technology. The product uses peppermint, astragalus, wolfberry, mulberry bark, anemarrhena, arborvitae leaf, scrophularia, cimicifuga, elsholtzia, angelica, lily, ginkgo, licorice, schisandra, eleutherococcus senticosus, ophiopogon japonicus, and dried ginger as raw materials, sorghum as a co-fermentation raw material, and brewing liquid as a fermentation enhancer. The process involves pretreatment of the traditional Chinese medicine, co-cooking with sorghum, saccharification with small-grain starter, segmented fermentation, extraction and purification, and post-treatment. This invention utilizes a "compound traditional Chinese medicine ~ sorghum" co-fermentation system, combined with the microbial community and active substances rich in brewing liquid, to increase the dissolution rate of active ingredients such as astragaloside A, lily polysaccharide, and wolfberry polysaccharide in the traditional Chinese medicine by more than 50%, while simultaneously converting them into easily absorbed small molecule derivatives. The finished product has an alcohol content controlled at 6-8 degrees, which not only promotes the absorption of active ingredients but also possesses synergistic effects of clearing the lungs and regulating qi, tonifying qi and benefiting the lungs, moistening the lungs and relieving cough, and clearing heat and resolving phlegm. The process enables the resource utilization of yellow water from brewing, reducing costs by 35%, and the product exhibits excellent stability, making it suitable for industrial production. It also has significant value in the field of lung function regulation and health care.

The utility model relates to the technical field of waste heat boiler, and disclose dangerous and useless waste heat boiler denitration protection structure, including base and setting the boiler body at the upper end of base, the upper end of boiler body is provided with flue, one side of boiler body is provided with denitration structure, and the pump body is started, and the urea solution can be pumped out by utilizing pipeline, and can be reduced nitrogen oxides in flue gas by utilizing the spray gun to spray, realize the purpose of denitration, and can carry out anticorrosion protection by the aid of Y type round steel grab nail and refractory castable, and the water wall structure can be used normally, avoid the boiler body and stop the boiler because of water wall structure corrosion, can guarantee burning and flue gas denitration system normal operation while can reduce waste heat boiler part heat exchange, improve the boiler body export flue gas temperature, satisfy environmental protection requirement, utilize the heat preservation structure to the urea storage tank of storage urea solution heat preservation, avoid the crystallization of too low temperature, do not influence the reduction use of nitrogen oxides in the boiler body inside.

This invention relates to the field of microencapsulation technology for natural products, specifically to a water-soluble ginger oleoresin microcapsule, its preparation method, and its applications. The invention uses modified starch, plant polysaccharides, etc., as wall materials and ginger oleoresin as the core material. The ginger oleoresin microcapsule product is obtained through processes such as ginger oleoresin molecule coating, emulsification, high-pressure homogenization, constant-temperature standing, and drying. This product features high gingerol content, good water solubility, and low spiciness in the solution. It also exhibits good stability in acidic solutions, meeting the requirements of high stability, no precipitation, low spiciness, and good heat sensitivity in low pH environments. It is suitable for use in food, beverages, health foods, pharmaceuticals, cosmetics, and other fields.

The application relates to a high-strontium mineral water preparation method for improving strontium absorption and application of the same. The method comprises raw water input, pretreatment and purification, two-stage nanofiltration grading purification, strontium concentrate liquid and low-mineral dialysis, constant-temperature targeted chelation reaction, chelated strontium mother liquor, sterile blending, calcium-strontium ratio precise control, improvement of strontium absorption and utilization, double strategies of calcium-strontium ratio lock control and ion removal, solution of competition of calcium and magnesium ions on strontium absorption from the root, mild reaction in the whole process, no high temperature and high pressure, no introduction of harmful by-products, all raw materials meeting national food safety standards, no taste difference, no peculiar smell and no astringency.

The present application belongs to the technical field of material chemistry and environmental governance, and discloses a plant decomposition type deodorant formula and a configuration method. In view of the defects of the existing deodorization technology, such as secondary pollution, slow effect, only masking odor, insufficient product stability and the like, the present application uses tea polyphenol extract, yucca extract, grape seed extract, various plant essential oils and other pure natural plant extracts as raw materials, does not contain chemical synthetic additives, and is prepared through a standardized process of precise control of constant temperature environment, grading stirring speed, step-by-step feeding and reaction time. The deodorant can target decomposition of various foul-smelling molecules, has the effects of bacteriostasis and oxidation resistance, is completely deodorized, has strong product stability, is safe and non-irritating, has no secondary pollution, and can be widely applied to foul odor treatment in multiple scenes such as livestock breeding, garbage treatment, sewage treatment, public environment and the like.

This invention relates to the field of etching solution technology, particularly to the field of IPC C23F, and more specifically, to a two-component copper-molybdenum-titanium etching solution and its preparation method. It comprises a main agent and an auxiliary agent. By weight, the main agent consists of: 8-15 parts oxidant, 4-13 parts first organic acid, 1-3 parts first inorganic acid, 1-3 parts first organic base, 1-4 parts first surfactant, 0.05-0.5 parts first fluorinated compound, 0.01-1 parts first corrosion inhibitor, and 60-80 parts water. The auxiliary agent consists of: 10-60 parts second organic acid, 2-10 parts second inorganic acid, 1-5 parts second organic base, 0.05-0.5 parts second fluorinated compound, 1-5 parts second surfactant, 0.5-2 parts second corrosion inhibitor, and 50-80 parts water. This invention solves problems such as large etching rate fluctuations, chamfering, vertical angles, precipitation, and crystallization during the etching process.

The invention discloses an intelligent nanocapsule oil-displacing agent as well as a preparation method and application thereof, and belongs to the technical field of oil exploitation. The preparation method comprises the following steps: (1) adding N-isopropylacrylamide, methacryloylethyl sulfobetaine, unsaturated phosphate and an emulsifier into water to obtain a water phase; (2) adding the modified nanoparticles into a first solvent to obtain an oil phase; and (3) adding the oil phase into the water phase, uniformly stirring and mixing, adding an initiator under the condition of inert gas, and reacting to obtain the intelligent nanocapsule oil-displacing agent. The intelligent nanocapsule oil-displacing agent can be adjusted according to the actual temperature of an oil reservoir, the effects of low-temperature easy pumping and high-temperature stable displacement are achieved, and then the oil recovery rate is increased.

The invention discloses a nano synergistic oil washing agent for CO2 flooding of a low-permeability reservoir. The nano synergistic oil washing agent comprises 38%-48% of a nano surfactant, 12%-22% of an anionic surfactant, 15%-20% of a nonionic surfactant, 4%-6% of low-carbon alcohol and the balance of water. The invention discloses a preparation method of a nano synergistic oil washing agent for CO2 flooding of a low-permeability reservoir, which comprises the following steps: (1) adding a non-ionic surfactant with a formula amount into a reaction container, then adding low-carbon alcohol with a formula amount into the reaction container, and uniformly stirring at a certain temperature to obtain a mixed solution; and (2) adding a formula amount of water into the reaction container, stirring, then adding a formula amount of anionic surfactant and a formula amount of nano surfactant into the reaction container, and fully and uniformly stirring to obtain the nano synergistic oil washing agent for CO2 flooding of the low-permeability reservoir. The invention discloses application of a nano synergistic oil washing agent for CO2 flooding of a low-permeability reservoir in oil extraction of an oil field.

This invention discloses a Zisha mineral water filter, made from 60% Zisha clay, 20% tourmaline powder, 15% maifanite powder, and 5% clinoptilolite powder. The process involves vacuum refining, aging, molding, air-drying, and high-temperature sintering at 850℃ to produce mineralized ceramic blocks. The product can be directly placed in water cups or teapots, transforming tap water into weakly alkaline, small-molecule cluster active water (pH 7.4–8.2) within 10 minutes, dissolving beneficial minerals without heavy metal leaching. It is resistant to boiling water, does not pulverize, and does not cloud the water, with a service life of 6–12 months. This invention features a stable, safe, and convenient process suitable for daily drinking water, solving the problems of traditional filter media's single function, poor stability, and insufficient safety. It is suitable for healthy drinking water in homes and offices.

This invention discloses a highly active carboxymethylated water-soluble lignin potassium fertilizer and its preparation method, belonging to the field of high-value utilization technology of biomass resources. The method uses lignin as raw material, employs potassium hydroxide instead of traditional sodium hydroxide as the alkalization medium, and adds acetic anhydride under an inert atmosphere; then, it undergoes an etherification reaction with monochloroacetic acid. After the reaction is complete, dilute ammonia is added, and the mixture is subjected to pH adjustment, solid-liquid separation, and drying to obtain the highly water-soluble carboxymethylated lignin potassium fertilizer. This invention can efficiently introduce carboxyl groups to improve water solubility, and the resulting product has both potassium fertilizer supply and plant growth regulation functions, providing a green and efficient technical path for the high-value transformation of lignin into a high-efficiency green agricultural fertilizer.

The application discloses a stomach magnetic control physical occupation intervention assembly and a manufacturing and using method thereof, and belongs to the technical field of human physiological intervention supplies. The intervention assembly takes permanent magnetic particles as the core, is coated with acid and alkali resistant inert materials and smooth flexible materials outside, realizes stomach physical occupation intervention through magnetic attraction and agglomeration of the intervention particles, and realizes particle dissociation and discharge through external alternating magnetic field demagnetization. The manufacturing process is simple, and the intervention assembly can be formed only through coating, solidification and sterilization. When used, the intervention assembly can be directly sent into particles, the intervention period is controllable, the intervention assembly is not digested and absorbed, and no analysis is generated. The application realizes controllable stomach occupation through a pure physical magnetic control principle, and has extremely high practical value.

The invention discloses a medical flushing glue solution and a preparation method thereof, and relates to the technical field of flushing glue solutions, and the medical flushing glue solution is prepared by adding 0.15% by weight of sodium methyl cellulose, 0.8% by weight of sodium chloride and 99.05% by weight of medical purified water. According to the application, the content ratio of sodium carboxymethyl cellulose to sodium chloride is accurately matched with the requirement of a medical flushing scene, and meanwhile, the dosage of sodium carboxymethyl cellulose can enable the glue solution to have good flowability and moderate tissue adhesiveness, so that smooth flushing in clinical operation can be realized, a continuous moist protective layer can be formed on the surface of tissue, and the medical flushing effect is improved. The cleaning and protecting effects are effectively achieved; the dosage of sodium chloride can accurately simulate physiological osmotic pressure to ensure that the glue solution is compatible with the human tissue environment, in addition, the glue solution under the formula is excellent in stability, has no layering and precipitation phenomena within 6 months under the storage condition of 4 DEG C, and can meet the stability requirements of long-term storage and clinical use.

The application discloses a low-alcohol herbal Jiang liquor stability control and flavor optimization process mainly using polysaccharides, which comprises the following steps: adding polysaccharide extracts into Jiang liquor base liquor, ensuring that the total polysaccharide addition concentration is 0.1-0.5 g / L, emulsifying and stirring for 10-20 min, and preparing low-alcohol herbal Jiang liquor in a gradient reduction degree aging mode. The application can avoid common problems of low-alcohol (≤42%vol) herbal Jiang liquor, such as single aroma, thin taste, water taste or astringent taste, and improves the flavor stability and style quality of the liquor body.

The invention belongs to the technical field of oil exploitation, and particularly relates to an oil-based foam oil displacement system based on stability augmentation of high-temperature-resistant nano-particles and a preparation method and application thereof.The stability augmentation oil-based foam oil displacement system is characterized in that 0.5 wt%-1.5 wt% of nano-particles, 0.5 wt%-2 wt% of a nonionic surfactant Span20 and 0.1 wt%-1.0 wt% of a nonionic surfactant JQ-1 are adopted, the half-life period of foam drainage can be 15-22 min under the conditions that the pressure is 1 MPa and the temperature is 100 DEG C, and the stability augmentation oil-based foam oil displacement system is stable. And the half-life period of foam is 9-15 days. The stability-enhancing oil-based foam oil displacement system based on the high-temperature-resistant nano-particles is high in foaming capacity in an oil solvent, the surface tension of the oil solvent can be remarkably reduced, high foaming performance and foam stability are achieved, and the preparation process is simple, green and environmentally friendly.

This invention discloses a method for preparing edible Chinese herbal eye drops using traditional distillation techniques, belonging to the field of Chinese herbal eye preparation technology. It addresses the problems of low safety, poor user experience, low component utilization, and insufficient adaptability to various scenarios in existing eye care preparations. The method uses medicinal and edible herbs such as *Senecio scandens* and *Eriocaulon buergerianum* as the core ingredients, with purified water as the only excipient. The process involves purification, processing, traditional static conditioning, distillation to obtain the dew, followed by refined treatment through low-temperature extraction, multi-stage ultrafiltration, and low-temperature deodorization. Finally, the product is aseptically filled to a fixed volume. This invention allows for adjustments to the formula and replacement of processes according to needs. It can also be formulated into freeze-dried powder or a special dosage form suitable for nebulizers. The resulting eye drops are colorless, with a pH of 6.5-7.0, meeting edible standards. The active ingredients are molecularly dissolved, allowing for eye drops, nebulization, external application, and oral administration. It is safe and non-irritating, with high component utilization, adaptable to multiple scenarios, green and additive-free, suitable for long-term eye care, and safe for the elderly and children.

This invention relates to the field of building waterproofing materials technology, and discloses a composition for a non-asphalt-based waterproofing adhesive, a non-asphalt-based waterproofing adhesive and its preparation method, a waterproof membrane, and its application. The composition consists of a main agent and additives. The main agent includes a rubber compound, petroleum resin, plasticizer, silanizing agent, and filler. Based on the total mass of the composition, the content of the rubber compound is 15-25 wt%, the content of the petroleum resin is 35-45 wt%, the content of the plasticizer is 10-15 wt%, the content of the silanizing agent is 0.5-2 wt%, and the content of the filler is 15-20 wt%. The rubber compound is a combination of liquid polysulfide rubber and liquid butyl rubber in a mass ratio of 1:2-3. The waterproof membrane provided by this invention has excellent adhesion, weather resistance, and waterproofing performance.

This invention relates to the field of electrochemical energy storage materials and lithium metal battery technology, specifically to an in-situ polymerized solid electrolyte, its preparation method and application, and lithium metal batteries. This in-situ polymerized solid electrolyte is prepared by heating a ring-opening polymerization reaction using 1,3-dioxolane and 1,1,1-trifluoro-2,3-epoxypropane as reactants, sodium thiosulfate as an initiator, and lithium salt and plasticizer fluoroethylene carbonate as a precursor solution. This electrolyte possesses numerous amorphous regions, which is beneficial for ion transport, enabling the formation of a self-supporting dense structure. It also ensures close contact with the electrode, resulting in a pure interface that effectively reduces interfacial impedance and avoids side reactions at the electrode interface. Furthermore, it enhances oxidation resistance, broadens the electrochemical window, and inhibits dendrite growth. While achieving good mechanical properties, it also improves the cycle stability and safety performance of the battery. It has excellent application prospects in lithium metal batteries, lithium-ion batteries, solid-state energy storage systems, or flexible electronic devices.

The invention discloses a calamine suspension system as well as a preparation method and application thereof, and the calamine suspension system comprises the following components in parts by weight: 5-12 parts of a surfactant, 1.5-4 parts of a thickening agent, 0.01-0.5 part of calamine, 0.0001-0.02 part of zinc oxide, 0.1-1.5 parts of a pH regulator, 0.2-2 parts of a preservative and the balance of water, totaling 100 parts. Wherein the surfactant is prepared from sodium laureth sulfate and cocamidopropyl betaine, and the cocamidopropyl betaine is prepared from sodium laureth sulfate and cocamidopropyl betaine. The thickening agent comprises an acrylic acid (ester) copolymer and cocamide MEA. The calamine suspension system with the calamine addition amount of 0.5% can be successfully prepared by compounding the specifically adopted surfactant with the thickening agent, and complete suspension of calamine in water is realized; the suspension system has good stability, and no precipitate is separated out after the suspension system is placed at normal temperature for 30 days.

The present application belongs to the field of pharmaceutical preparation, and particularly relates to a gel patch preparation containing diclofenac diethylamine salt. In the patch, the active pharmaceutical ingredient diclofenac diethylamine salt is dissolved in the aqueous solution A in a dissolved state by adding at least one surfactant, at least one cross-linking regulator and at least one tackifier. Then, the gel patch preparation is prepared by mixing the phase A with phase B containing at least one water-soluble polymer material, at least one cross-linking agent, at least one humectant and at least one penetration enhancer. The gel patch preparation disclosed in the present application is prepared more simply, the active compound diclofenac diethylamine salt exists in a dissolved state in the final preparation, the gel patch preparation has good skin followability, is easy to apply and remove, and tearing off does not cause pain.

The invention relates to the technical field of cosmetics, in particular to an oil-in-water type sunscreen cosmetic and a preparation method thereof.The oil-in-water type sunscreen cosmetic is prepared from a water-phase composition, an oil-phase composition, a sunscreen composition and a sunscreen agent; the water-phase composition comprises a water-soluble thickening agent, a humectant and water; the oil phase composition comprises solid wax; the sunscreen composition comprises a nonionic emulsifier; the humectant comprises glycerol; the water-soluble thickening agent is prepared from at least one of chondrus crispus, stearate, xanthan gum, carbomer, cellulose gum, agar and an acrylic acid (ester) / C10-30 alkanol acrylate cross-linked polymer. According to the invention, a system capable of stably encapsulating the oil-soluble sun-screening agent and the water-soluble active skin-care component at the same time is constructed through a specific formula of the water-soluble thickening agent, the humectant, the nonionic emulsifier and the like, and the product has high sun-screening property, refreshing skin feeling and excellent stability; the technical problem that portability and functionality of a traditional sunscreen product cannot be achieved at the same time is solved.