167results about How to "Mild ingredients" patented technology

The invention relates to a mild and highly effective wash-free makeup removal cream. The mild and highly effective wash-free makeup removal cream is characterized in that the mild and highly effective wash-free makeup removal cream consists of the following components in percentage by weight: 2 to 10 percent of polyethylene, 2 to 20 percent of cetyl alcohol ethylhexoate, 2 to 20 percent of PEG-10 isostearate, 2 to 20 percent of PEG-20 glyceryl triisostearate, 0.2 to 1 percent of tocopheryl acetate, 2 to 10 percent of phenyl trimethicone, 0.2 to 3.0 percent of dextrin palmitate and the balance of caprylic / capric triglyceride. The makeup removal cream disclosed by the invention has the advantages of high makeup removal capability, mild properties, high safety and convenience and easiness in carrying.

The invention discloses a water-soluble nano silver conductive coating. The raw material formula of the coating consists of the following materials in percentage by mass: 10-30% of nano silver wire dispersing liquid or 3-6% of nano silver wires, 30-50% of water soluble resin, 1-3% of leveling agent and the balance of water. According to the coating, the nano-grade conductive silver wires prepared by using an etching method are blended into the water soluble or oil soluble resin, so that the conductivity of the coating is greatly improved; compared with the prior art, the coating is very low in preparation cost, simple in preparation method, small in amount of added additives, gentle and free of pollution in reaction condition, and applicable to scale production, and the raw materials are low in price and easily obtained.

The invention discloses an anti-stain anti-corrosion antibacterial stainless steel plate. A preparation method of the anti-soil anti-corrosion antibacterial stainless steel plate comprises the following steps that (1) a stainless steel plate is subjected to mechanical polishing; (2) the stainless steel plate is subjected to caustic washing; (3) the stainless steel plate is subjected to acid washing; (4) the stainless steel plate is subjected to deactivation, specifically, the acid-washed stainless steel plate is placed in deactivation liquid and subjected to deactivation for 5-8 min on the condition that anode voltage is 4-6 volts; (5) the stainless steel plate is subjected to oxidation, specifically, the deactivated stainless steel plate is placed in film formation liquid at the temperature of 60-65 DEG C and treated by positive and negative alternate alternating current, and a layer of oxidation film of 300-400nm is formed on the surface of the stainless steel plate; (6) coatings are smeared on the stainless steel plate, specifically, the polymer coating and the antibacterial coating are smeared on the stainless steel plate; and (7) the stainless steel plate obtained from the step (6) is placed in distilled water and immersed for 6-8 min at the temperature of 75-85 DEG C, so that the anti-stain anti-corrosion antibacterial stainless steel plate is obtained. The preparation method is simple, and anti-stain, anti-corrosion and antibacterial functions of the prepared product are all excellent.

The invention relates to anti-hair loss hair-growing liquid. The anti-hair loss hair-growing liquid is prepared from the following raw materials by percentage: 0.5 to 5 percent of radix ginseng extract, 0.5 to 5 percent of cacumen platycladi extract, 0.5 to 5 percent of radix angelicae sinensis extract, 0.5 to 5 percent of radix polygoni multiflori extract, 0.3 to 3 percent of radix rehmanniae extract, 0.3 to 3 percent of radix scutellariae extract, 0.3 to 3 percent of rhizoma zingiberis recens extract, 0.05 to 0.8 percent of tripeptide-1copper, 1 to 8 percent of palmitoyl tripeptide-1, 0.5 to5 percent of myristoyl pentapeptide-4, 15 to 30 percent of edible alcohol, 0.2 to 0.5 percent of hexanediol, 0.1 to 0.35 percent of phenoxyethanol, 0.05 to 0.30 percent of sodium citrate, 0.02 to 0.2percent of citric acid, 0.005 to 0.02 percent of essence and the balance of deionized water. The anti-hair loss hair-growing liquid disclosed by the invention has the advantages that the problems ofscalp hair loss and less hair can be solved, and the ecological environment of the scalp can be improved due to high active ingredients; a good role in hair fixation and hair growth is played, so thatthe hairs are thicker.

The invention provides an infant chapping-prevention and skin-care composition. The infant chapping-prevention and skin-care composition is prepared from the following components: an anti-freezing andmoisturizing composite component, an active polysaccharide pre-mixed solution, a compound plant extract matrix solution, a ceramide nano-lipid pre-dispersant, an oil-phase base solution and a water-phase base solution. The composition has the effect of enhancing a skin barrier function and good air pollution isolation performance and can be used for assisting to repair chapped skin; the composition has mild properties and no irritation and is especially suitable for the skin of infants.

The invention discloses a preparation method of a membrane electrode of a fuel cell. The method comprises the steps of coating a transfer medium with a substrate layer; carrying out in-situ reduction-deposition of platinum nanoparticles on the substrate layer and then coating the platinum nanoparticles with a layer of proton conducting polymer to form an electrode catalyst layer; and finally transferring the catalyst layer to a proton exchange membrane by adopting a heat transfer process to prepare a membrane electrode. The invention further discloses the membrane electrode of the fuel cell and an application of the membrane electrode on a cathode or an anode of a proton exchange membrane fuel cell. The problem of contradiction between reduction time and electrochemical active area in thein-situ deposition process of platinum is relatively well solved and the yield of heat transfer is improved. The membrane electrode has the beneficial effects of high catalyst activity and utilizationrate, large electrochemical active area, low gas transmission impedance in the catalyst layer and the like, and is low in production cost, simple and fast in process and high in yield, and massive production is easy to implement.

The invention belongs to the technical field of carbon materials and particularly relates to a method for preparing nitrogen-doped porous graphite by a one-step hydrothermal method. The method comprises the following steps: adding pore-foaming agent hydrogen peroxide and nitrogen source ammonia into a graphene oxide aqueous solution, and heating the mixed solution to the temperature of 100-220 DEG C for a hydrothermal reaction, so as to obtain the N-doped porous graphite by one step. According to the method, a porous structure of the graphite is constructed, and nitrogen doping is realized, and therefore, the whole process is simple, the requirement for equipment is low, reaction conditions are milder, and the production cost is low; and the prepared nitrogen-doped porous graphite has the characteristics of large specific surface area, excellent catalytic performance and the like and can be used in the fields of electro-catalysis, super-capacitors, lithium ion batteries, organic catalysis and the like.

The invention discloses a method for treating wastewater with trivalent arsenic. The method includes simultaneously feeding the to-be-treated wastewater with the trivalent arsenic, iron salt solution and sulfate solution and simultaneously sufficiently colliding the to-be-treated wastewater, the iron salt solution and the sulfate solution with one another to obtain first mixtures; regulating the pH (potential of hydrogen) of the first mixtures until the pH of the first mixtures reaches 1.8-3.0; uniformly mixing the first mixtures with one another at the normal temperature; carrying out reaction; separating precipitates. The method has the advantages that feeding reaction is carried out under the conditions of the temperatures of 25+ / -1 DEG C, the speeds of 600+ / -20 r / min and the pH of 2.4 for 18 min when the arsenic solution with the As <3+> content of 20.5 g / L, the iron salt solution with the Fe <3+> content of 23.0 g / L and the sulfate solution with the SO<4><2-> content of 6.56 g / L are added into 30 mL of deionized water at the speeds of 1.8 mL / min, water hydroxyl sarmientite minerals are good in crystallization, and the As <3+> removal rate is 87.6%; the method for treating the wastewater with the trivalent arsenic is high in arsenic removal efficiency, good effects can be realized, raw materials are low in cost and are easily available, conditions are mild, procedures can be controlled, the precipitates are high in arsenic content, are stable and are easy to separate, secondary pollution can be prevented, and accordingly the method has a broad practical application prospect.

The invention discloses a hair-growing and / or white-hair-to-black-hair essence liquid containing various peptides and plant extracts. The hair-growing and / or white-hair-to-black-hair essence liquid isprepared from tripeptide-1, copper tripeptide-1, acetyl tetrapeptide-3, a cacumen platycladi extract, a sargassum pallidum extract and bisabolol. According to the hair-growing and / or white-hair-to-black-hair essence liquid, by compounding plant traditional Chinese medicine components and small-molecular peptide components, scalp blood circulation is improved, oxidation resistance and free radicalresistance are achieved, hair follicle tissues are repaired, keratin genes are activated, hair growth is promoted, and a scalp nutrient and healthy environment is maintained. The effects of activating blood, resisting inflammation, inhibiting bacteria, inhibiting sebaceous gland excessive secretion and promoting hair follicle stem cell proliferation and differentiation are effectively achieved, the effects of relieving itching, controlling oil, strengthening hair and preventing alopecia are achieved, white hair becomes black from roots, white hair can be rapidly turned into black hair, and moreover, symptoms of alopecia and dry and withered hair can be effectively eliminated. The components are natural, safe, mild, free of irritation, capable of taking effect rapidly and free of any potential hazard.

The invention discloses a method for selectively synthesizing a pyrazolo[1,2-a] pyrazolone or 2-acyl indole compound, and belongs to the technical field of organic chemistry. Starting from a 1-aryl pyrazolidone compound 1 and an alkynyl cyclobutanol compound 2, the pyrazolo[1,2-a] pyrazolone compound 3 or 2-acyl indole compound 4 is synthesized with high selectivity by changing the reaction temperature, solvent and additive types under the catalysis of a dichloro (pentamethylcyclopentadienyl) rhodium (III) dimer. The method has the advantages of simple and easily available raw materials, simplicity and convenience in operation, mild conditions, good selectivity, wide substrate application range and the like.

The invention relates to paint additive, composed of the following components by weight ratio: 10-12 parts of anti-yellowing resin, 8-10 parts of lavender, 8-10 parts of rosemary, 15-20 parts of mugwort leaf, 20-30 parts of butylation reactant of paracresol and dicyclopentadiene and 5-8 parts of polysiloxane. The paint additive made by mixing the components can be added in vegetable paint, can be antioxidant, prevent paint air bubble, prevent yellowing of the paint and cause the paint to be fragrant, and can cause mosquito to be far away from furniture or wall surface coated with the paint. Besides, the paint is pollution-free.

The invention discloses a preparation method of a 4,5-disubstituted-2-substituted aminothiazole compound. The preparation method comprises steps as follows: 1), nitro epoxy compounds and thiourea compounds react at the room temperature for 4-8 h in the presence of a solvent and a basic catalyst; a mole ratio of the nitro epoxy compounds to the thiourea compounds to the basic catalyst is 1: (1.8-2.2): (1.8-2.2); 2), a reaction liquid obtained in the step 1) is concentrated, subjected to solvent removal and added with water, a mixture is extracted by dichloromethane, an organic layer is obtained and then is washed, dried and concentrated by a rotary evaporator; 3), the concentrate obtained in the step 2) is subjected to silica-gel column chromatography, and the 4,5-disubstituted-2-substituted aminothiazole compound is obtained.

The invention relates to a bipolar membrane with aluminum hydroxide as an intermittent interface layer catalyst and a preparation method of the bipolar membrane. The bipolar membrane comprises an anion exchange membrane layer, an intermittent interface layer and a cation exchange membrane layer, wherein the intermittent interface layer is positioned between the anion exchange membrane layer and the cation exchange membrane layer; the intermittent interface layer is prepared from nano aluminum hydroxide powder of which the particle size is 10-30nm. As Al(OH)3 is adopted as the catalyst of the intermittent interface layer of the bipolar membrane, the bipolar membrane is relatively solidly combined with the ion exchange membrane layer, the loss of reaction activity sites is greatly retarded,and the obtained bipolar membrane is high in hydrolysis efficiency, good in membrane layer compatibility, low in transmembrane voltage and stable in use performance.

The invention discloses a method for preparing a sodium iron phosphate electrode by using industrial byproduct ferrous sulfate. The method comprises the steps of dissolving the ferrous sulfate in a phosphoric acid solution, then adding hydrogen peroxide, adjusting the pH of the phosphoric acid solution to 1.5-2 for carrying out a reaction, and separating out iron phosphate precipitates; and carrying out thermal dehydration treatment on the iron phosphate precipitates to obtain iron phosphate powder; coating a current collector with the iron phosphate powder, a conductive agent and a binder through a coating method to prepare an iron phosphate electrode plate; and by taking the iron phosphate electrode plate as a positive electrode, metallic sodium as a counter electrode and a sodium perchlorate solution as an electrolyte solution, performing electrochemical sodium embedding to obtain the sodium iron phosphate electrode. According to the method, the cyclic utilization problem of the ferrous sulfate byproduct is effectively relieved, and the sodium iron phosphate positive electrode with high electrochemical activity can be obtained, so that a sodium ion battery with high capacity andhigh cycling stability is obtained.

The invention discloses a super rich moisturizing repair facial mask which comprises a facial mask solution and a facial mask tissue, wherein the facial mask solution contains a skin conditioner, andthe skin conditioner contains the following components: panthenol, 1, 2-butanediol, glyceryl polymethacrylate, PVM / MAH copolymer, tranexamic acid, glucan, nonapeptide-1, allantoin, dipotassium glycyrrhizinate, oligopeptides and collagen extractive. The facial mask solution provided by the invention is mild in property, good in permeability, and capable of generating a long-lasting moisturizing andmoistening effect for skin, maintaining skin water environment constant, and preventing and relieving skin aging, and can ease skin after basking, and can accelerate skin repair and updating.

The invention provides a nano glass antifogging agent and a preparation method thereof. The nano glass antifogging agent comprises effective components and water. The effective components comprise an anionic surfactant, a non-ionic surfactant, a nano photocatalytic active substance, an active agent stabilization additive, an organic acid solvent and a volatilization dispersant. In the preparation process, the organic acid solvent and the volatilization dispersant are mixed with partial water so as to obtain solution A; the anionic surfactant is mixed with the non-ionic surfactant so as to obtain solution B; the active agent stabilization additive is added to the solution B, the solution is uniformly mixed, then the solution A is added, and the rest water is added after uniformly mixing, the nano glass antifogging agent is obtained after uniformly mixing. The preparation method is capable of stably dispersing the nano photocatalytic active substance into a carrier solvent, using the super-hydrophilic property and nano adhesiveness thereof, and using own specific ultraviolet shielding and the decomposing and removing of harmful gases in the air as the function extension of the nano glass antifogging agent, and obtaining the nano glass antifogging agent with the long-term stable antifogging effect and the possible functional recovery after long-term use.

The invention discloses a folium isatidis hand cleanser and a preparation method thereof. The folium isatidis hand cleanser comprises the following raw materials in parts by weight: 30-80 parts of folium isatidis, 5-35 parts of honeysuckle flower, 5-35 parts of wild chrysanthemum flower, 5-35 parts of isatis root, 0-20 parts of a surfactant, 2-18 parts of a humectant, 0-10 parts of a thickening agent, 0-1 part of an acidifying or alkalizing agent, 0-2 parts of an aromatic, and 0-10 parts of a pearlescent agent. The preparation method comprises the following steps: adding ethanol in the traditional Chinese medicines for backflow extraction, after ethanol is recovered by an extract, adding the humectant, a proper amount of purifying water and the surfactant, the aromatic, and steps of degassing and defoaming are carried out to obtain the folium isatidis hand cleanser. The hand cleanser has obviously inhibiting effects for staphylococcus aureus, white staphylococcus, alpha streptococcus, enteritis bacillus and influenza virus, and has good protection effect for cleaning arms and preventing infectious disease.

The invention discloses a nose-protecting wet tissue and a preparation method thereof. The wet tissue comprises a piece of non-woven fabric and wet tissue liquid. The wet tissue liquid comprises the following raw materials by weight: 85-95% of purified water, 0.02-0.5% of eucalyptus leaf essence, 0.03-0.5% of chamomile essential oil, 1-7% of an aloe extract product, 1-7% of glycerin, 0.05-0.2% of an antiseptic, 1-3% of a nonionic surfactant, 0.5-5% of mint essential oil, 0.5-3% of lavender essential oil, 0.5-2% of a wormwood extract product and 0.5-2% of salt. The nose-protecting wet tissue has cleaning, sterilizing, refreshing, stuffy nose relieving and moisturizing effects, and is suitable for daily nursing of people with running nose due to cold and rhinitis, and people with allergy; the nose-protecting wet tissue has the advantages of mild components and simple preparation method without environmental pollution.

The invention discloses mild eye shadow cream prepared from the components including a lichen extract, an aloe extract, a ginseng fruit extract, microcrystalline wax, Vaseline, squalane, beewax, white oil, titanium dioxide, almasilate, glycerin monostearate and the like; the mild eye shadow cream has the following beneficial effects that (1) the moss extract, the aloe extract, the ginseng fruit extract and base stock are mixed to form a fresh and cool formula, oily feel is avoided and a product has better skin feeling; (2) the mild eye shadow cream is comfort, fresh, soft and smooth in texture, so as to be easy to apply and shade, and is good in adhesion to skin, and the makeup is durable and not easy to smudge; (3) the eye shadow cream is mild and safe in component and is suitable for sensitive skin; in addition, the mild eye shadow cream has the effects of nourishing and skin protection.

The invention is applicable to the technical field of cosmetics, and provides a bioenzyme-containing three-in-one washing solution and a preparation method thereof. The bioenzyme-containing three-in-one washing solution comprises the following components in percent by weight: 10-20% of an amphoteric surfactant, 10-15% of a non-ionic surfactant, 0.5-1.0% of a greasing agent, 1-5% of an emulsifyingagent, 1-5% of a wetting agent, 0.5-2.5% of a skin conditioner, 0.1-0.5% of enzyme, 0.1-1.2% of an antioxidant, 0.05-0.2% of a chelating agent, 0.1-0.2% of a pH regulator, 0.01-0.2% of an essence andthe balance of deionized water. The bioenzyme-containing three-in-one washing solution has shampooing, bathing and skin-care three functions, the raw materials in a formula thereof are toxicologicallyevaluated, and under a coordinated action of lysozyme and a natural antioxidant component, an anticorrosion system with excellent safety is constructed; the components thereof are mild, and the bioenzyme-containing three-in-one washing solution can fully moisturize baby skin, strengthen hairs and maintain scalp health.

The invention discloses cooling fluid for glass processing. The cooling fluid is prepared from the following components in parts by weight: 8 to 12 parts of triethanolamine, 3 to 5 parts of a lubricant, 1 to 3 parts of an anti-wearing agent, 2 to 5 parts of an anti-rusting agent, 0.5 to 1 part of a surfactant, 0.7 to 1.3 parts of a fungicide, 1 to 2 parts of a de-foaming agent, 1 to 1.5 parts of a flocculating agent, 2 to 3 parts of an anti-scaling agent and 30 to 35 parts of de-ionized water. According to the cooling fluid disclosed by the invention, the PH (Potential of Hydrogen) value of the prepared cooling fluid is close to 7, and the cooling fluid nearly has no corrosion on equipment; the cooling fluid has moderate components and has no irritation on human skin.

The invention discloses a preparation method of corrosion-resistant flame-retardant paint. The preparation method comprises steps as follows: (1) performing pretreatment; (2) heating preheated matrix resin to the temperature of 50-60 DEG C, adding a monomer diluent, and performing high-speed stirring; (3) heating the mixture to the temperature of 130-145 DEG C, adding an initiator, an antistatic agent, a flame retardant and a matting agent for reactions; (4) cooling the reaction product to the temperature of 92-95 DEG C, adding an antibacterial agent, an ultraviolet light absorber and an antifoaming agent for reactions; (5) slowly cooling the reaction product to the temperature of 45-50 DEG C while stirring, and performing ultrasonic dispersion and cooling to the room temperature to obtain the corrosion-resistant flame-retardant paint. The preparation method is simple and easy to operate and comprises a few steps, the reaction condition is mild, the reaction process is easy to control, and raw materials are easy to obtain. The obtained corrosion-resistant flame-retardant paint has excellent flame retardation, a paint film is unchanged under an acid or alkaline condition for 72 h, and the paint shows excellent chemical corrosion resistance, has the antistatic property and can prevent electrostatichazards.

The invention discloses Chinese torreya essential oil soap. The soap contains the following components in percentage by weight: 7 to 10% of water, 13 to 18% of sorbitol, 8 to 10% of propylene glycol, 15 to 18% of stearic acid, 8 to 12% of lauric acid, 3 to 6% of glycerinum, 6 to 8% of AES, 20 to 25% of saccharose, 0.6 to 1.5% of wool fat, 0.2 to 0.5% of sodium hydroxide, 1 to 3% of alkyl glycoside, 1 to 2% of potassium cocoyl glycinate, 1 to 2% of Chinese torreya essential oil, 0.4 to 0.7% of daily chemical fragrance compound and 0.3 to 0.6% of a Curasao Aloe extract. The Chinese torreya essential oil soap can solve the detects in the prior art, and is a good skin care product capable of moistening skin, delaying senescence and promoting cell metabolism when used at home or during travel.

The invention relates to an endometrium stem cell serum-free medium, which is prepared from the following components in percentage by total volume: 70 to 85 percent of low-sugar DMEM (Dulbecco Modified Eagle Medium), 5 to 10 percent of serum replacement, 2 to 10 percent of vitamin C, 1 to 5 percent of L-glutamine, 1.25 to 15 percent of glucose, 1 to 10 percent of 2-mercaptoethanol, 0.8 to 1.5 percent of mycillin double-antibody solution, and 0.8 to 1.5 percent of gentamicin sulphate. The endometrium stem cell serum-free medium provided by the invention is adopted for carrying out cell culture, and has the characteristics of less medium component, stable endometrium stem cell growth, high multiplication capacity and high purity.

The invention discloses a heat-resistant nano-silver conductive paint and a manufacturing process thereof. The heat-resistant nano-silver conductive paint comprises the following components in parts by weight: polypropylene random, heat-resistant polyethylene, diisopropylbenzene peroxide, a viscosity modifier, tackifying resin, graphite powder, silver powder and nano-silver wire dispersion liquid. Nanoscale conductive silver wires are mixed into water-soluble or oil-soluble resin, so that the conductivity of the resulting paint is greatly improved; the heat-resistant polyethylene and the tackifying resin are mixed into the solution, so that the pain has the characteristics of high adhesion and heat resistance; the superconductivity of the graphite powder and the silver powder is matched with the nanoscale conductive silver wires, so that the paint is low in resistivity and has superconductivity. The preparation method is simple, the added auxiliaries are few, the raw materials are cheap and easy to obtain, the reaction conditions are mild, the pollution is free, and the method is suitable for mass production.

The invention discloses green tea cold prepared handmade soap and a preparation method thereof. The handmade soap is prepared from the following raw materials in parts by weight: 30 to 60 parts of olive oil, 1 to 5 parts of moringa seed oil, 10 to 30 parts of shea nut oil, 5 to 10 parts of palm kernel oil, 10 to 20 parts of alkali liquor and 15 to 30 parts of green tea. The handmade soap prepared and obtained by the preparation method has excellent health-protection efficacy and cosmetology efficacy, further, is simple in preparation process, is lower in cost, is liable to realize, and further, is high in safety; mass products can be prepared.

The invention belongs to an acarus killing product in the field of cosmetics and particularly relates to skin-recovering purified essence, which is prepared from the following raw materials in percentage by weight: 1-10% of sodium acrylic acid (ester) copolymer, 1-10% of butanediol, 1-5% of nicotinamide, 10-30% of lecithin, 1-10% of quaternary ammonium salt-73, 5-15% of xanthan gum, 1-10% of salicylic acid, 1-5% of silver oxide, 15-35 % of Chinese herb extracts and the balance of a solvent, wherein deionized water is preferably selected as the solvent; the Chinese herb extracts include flavescent sophora root extracts, cnidium fruit extracts and willow herb extracts. The skin-recovering purified essence is mild and nonirritating in ingredients, can be used for effectively inhibiting and treating poxes and conditioning skin, has favorable efficacies of eliminating poxes, killing acari, diminishing inflammation, reliving pain and itch, promoting tissue regeneration, and caring skin, and is also capable of dredging trichopores, removing residual grease and aged cuticle, balancing oil-water ratio of skin, reducing acne regeneration, restraining acarus growth, promoting skin cell regeneration and promoting fineness and smoothness of skin.

The invention discloses a method for preparing flonicamid. The method comprises the following steps: S1, condensation reaction: in an organic solvent A, carrying out condensation reaction on a compound in a formula I and a compound in a formula III under the action of an acid-binding agent; wherein the organic solvent A is halogenated hydrocarbon or aromatic hydrocarbon; and S2, amidation reaction: after the condensation reaction in the step S1 is completed, directly adding a compound shown in a formula II without separation to carry out amidation reaction so as to obtain a compound shown in aformula IV. The intermediate one-pot method is adopted for continuous reaction to prepare flonicamid, the intermediate does not need to be purified, a target compound can be obtained only through simple operation, the feeding ratio is reduced, raw materials are saved, cost is saved, and operation is simplified. The method has the advantages of mild operation and adjustment, low risk, cheap and easily available raw materials, reduction of the generation and treatment of three wastes, realization of the high-purity flonicamid from the final product, realization of the total yield reaching 90% or above, great significance in the large-scale preparation of flonicamid, and meeting of the requirements of industrial large-scale production.