1457 results about "Aqueous ethanol" patented technology

The invention discloses a method for preparing a medical porous tantalum material. The method comprises the following steps of: mixing a poly ethanol aqueous solution and tantalum powder to obtain slurry, wherein the mass concentration of the poly ethanol aqueous solution is 2 to 8 percent; injecting the slurry into an organic foam by vibrating and pressurizing, wherein the vibrating frequency is 20 to 80 times / min; drying; degreasing; sintering, namely raising temperature to 1,500 to 1,800 DEG C at the speed of 10 to 20 DEG C / min under the vacuum degree of 10<-4> to 10<-3>Pa, preserving heat for 120 to 240 minutes, cooling to 200 to 300 DEG C along with a furnace, raising temperature to 1,500 to 1,800 DEG C at the speed of 10 to 20 DEG C / min again, preserving heat for 180 to 240 minutes, raising temperature to 2,000 to 2,200 DEG C at the speed of 5 to 10 DEG C / min, and preserving heat for 120 to 360 minutes; cooling; and performing thermal treatment, namely raising temperature to 800 to 900 DEG C at the speed of 10 to 20 DEG C / min under the vacuum degree of 10<-4> to 10<-3> Pa, preserving heat for 240 to 480 minutes, cooling to 400 DGE C at the speed of 2 to 5 DGE C / min, preserving heat for 120 to 300 minutes, and cooling to room temperature along with the furnace. The porous tantalum prepared by the method is very suitable to be used for the medical implant material for replacing bearing bone tissues, and biocompatibility and the mechanical property can be guaranteed simultaneously.

An integrated process for the production of ethanol from woody plant material is provided, the process comprising: contacting a continuous flow of the plant material with a counter-current continuous flow of an aqueous ethanol solution at elevated temperature and pressure to provide plant material depleted of lignin; removing ethanol from the lignin-depleted plant material; contacting a continuous flow of the lignin-depleted plant material with water at elevated temperature and pressure to solubilize xylose within the plant material; and hydrolyzing cellulose present in the plant material to form glucose, which in turn is fermented to produce ethanol.

A neutraceutical beverage comprising pericarp extract from the Garcinia mangostana L. (mangosteen) plant, and juice from mangosteen fruit pulp, preferably combined with juice from at least one of four other ingredients selected from red grapes, lycium, sea buckthorn, and apple, preferably obtained from powdered extract of mangosteen pericarp and a mixture of fruit concentrate and / or powdered fruit and / or fruit extract In a preferred embodiment the neutraceutical beverage comprises mangosteen pericarp extract and juice from each of mangosteen fruit pulp, red grapes, lycium, sea buckthorn, and apple. The mangosteen pericarp extract can be obtained by a process in which mangosteen pericarp is extracted with ethanol, for example, a 50% ethanol, 50% water solution, and the extract is dried under vacuum. The beverage optionally can include one or more additional fruit juices or concentrates, or fruit or plant extracts, such as concord grape concentrate, blueberry concentrate, red raspberry concentrate, powdered green tea extract, powdered grape seed extract, and powdered grape skin extract.

The invention discloses a reagent for extracting and purifying DNA, comprising the following substances: preprocessing lysis solution with pH of 7.4-8.5: water serves as solvent, and solute comprises the substances with the following final concentration: 10-100mM of buffer salt, 0.5%-5% of surface active agent, 1-100mM of chelating agent, 50-150mM of soluble salt, and 0.2-4mg / ml of protease K; pyrolysis combined liquid with pH of 6.4-7.4: water serves as solvent, and solute comprises the substances with the following final concentration: 20-150mM of buffer salt, 3-8 of MChaotropic salt, 1-10% of surface active agent, 0.5-4% of amphoteric ion detergent, 10-100mM of chelating agent and 15-30% of alcohol; cleaning solution I: water serves as solvent, and solute comprises the substances with the following final concentration: 4-6 of MChaotropic salt, 25-50% of alcohol and 10-100mM of chelating agent; cleaning solution II is 75% of ethanol water solution; spent regenerant is TE (10mM Tris-HCl, 1mMEDTA, and pH is 8.0); magnetic bead suspension is nanoscale silicone coated magnetic microsphere (50-100mg / ml).The DNA extracting efficiency is as high as 93.67% by adopting the reagent.

The invention relates to a tamper-resistant, oral pharmaceutical dosage form comprising a pharmacologically active ingredient having psychotropic action and an ethylene-vinyl acetate (EVA) polymer which provides resistance against solvent extraction, resistance against grinding, and resistance against dose-dumping in aqueous ethanol.

The invention discloses an active extract which is extracted from fagaceae and other plants by using 5 to 95% alcohol aqueous solution serving as a solvent, wherein the content of the trilobatin in the active extract is between 30 and 99.9%. The invention also discloses a preparation method for the active extract and application thereof in preparing a medicament for treating diabetes mellitus, diabetes nephropathy and hepatic edema.

The invention relates to a medicament for easing the pain of a human body and a preparation method thereof, in particular to a medicament composition with the functions of promoting blood circulation and removing blood stasis, resisting inflammation and diminishing swelling and easing pain, and a preparation method thereof. The medicament composition comprises the raw materials as follows: 20-100 parts by mass of Chinese teasel root, 20-110 parts by mass of cape jasmine fruit, 10-100 parts by mass of Baikal skullcap root and 20-100 parts by mass of angelica root. The preparation method of the medicament composition comprises the following steps of: extracting the raw materials of the medicament composition with water or an ethanol solution, filtering, and collecting the filtrate to obtain the medicament composition, wherein the percent of the ethanol in the ethanol solution by volume is more than 0 and less than or equal to 85%, and the mass ratio of the raw materials to the water or the ethanol solution is 1: 5-8. Clinical experiments show that the medicament composition has good curative effect for easing the neck / shoulder pain, the lumbocrural pain, the joint pain and the muscle pain caused by the rheumatism, the osteoproliferation, tumble and sprain, and the like.

The process of preparing bayberry cyaniding extract includes the following steps: 1. soaking fresh bayberry pulp in 1-10 times water solution of alcohol of 50-95 wt% concentration for over 4 hr; 2. filtering to eliminate alcohol and obtain medicine liquid; 3. regulating pH of the medicine liquid to 1-4 and adsorption in macroporous resin column; washing the column until the effluent becomes no color; 5. eluting with 20-95 wt% concentration water solution of alcohol and collecting the eluted liquid; and 6. filtering to recover alcohol and vacuum drying the eluted liquid at 40-80 deg.c. The present invention also discloses the quality standard and use as food and medicine colorizing agent of the prepared bayberry cyaniding extract.

The invention discloses core-shell silicon-containing synergetic flame retardant and a preparation method thereof. The invention is characterized in that non-halogen flame retardant is added into the aqueous liquid of ethanol and the pH value is adjusted to be 8 to 12 by an alkaline liquid under the temperature between 30 and 90 DEG C; a surface active agent and a silicone oxonium compound are added for reacting for 2 to 4 hours, thus obtaining the core-shell silicon-containing synergetic flame retardant which takes the non-halogen flame retardant decorated by the surface active agent as a core and takes the poly- silicone oxonium compound generated by the silicone oxonium compound under an alkaline condition as a shell layer; wherein, the weight ratio of the non-halogen flame retardant to the silicone oxonium compound is 2.3 to 19. The average grain diameter of the obtained product is not remarkably increased; the free fluidity of the grains is good; the shell layer is compact and uniform; the water property is greatly reduced; the high temperature water resistance is remarkably improved; the product can be used as the flame retardant of macromolecular materials like polyolefin, rubber, foaming plastics, and the like. Besides, the product can also be used for the inflaming retarding of paper, wood, fabrics, and the like.

The invention provides an olfactory analog instrument and an on-site analysis method for the odor grade of a specific substance. The invention has the following characteristics: 1, a gas sensor array constant temperature operation room, a computer and an autoinjection system are integrated in a test box; 2, utilization of a sample bottle with a volume of 250 ml and 25 ml of a to-be-tested sample enables a gas-liquid ratio to be 9: 1; 3, parallel resistance wires respectively wind in a semi-circle manner to generate 45-W power, so the sample and headspace volatilized gas are heated to a temperature of 80 DEG C in only 8 min and maintained at the temperature for 30 min; 4, 25 ml of an aqueous ethanol solution with a concentration of 100 ppm is used to generate standard reference gas in the sample bottle with a volume of 250 ml, and correction on gas sensors are carried out based on the generated standard reference gas; 5, headspace sampling flow is 500 ml / min, sampling time is 30 s, and gas sensor response signals undergo lowpass filtering and dimensionality reduction pretreatment; and 6, a database is established, and the olfactory analog instrument carries out on-site detection and grade prediction and identification on the odor of specific substances consisting of an adhesive, petroleum wax, leather, glycerin and edible vegetable oil.

The invention provides a method for extracting effective constituents from maca. The method includes the following steps that fresh or dry maca roots are taken as raw materials, the maca roots are washed, impurities are removed, an ethyl alcohol-water solution is used as homogenate liquid, the maca roots are homogenized, crushed and extracted, so that a homogenate extracting solution is obtained, filtering is conducted, filtering residues are mixed with an extraction solvent, negative pressure cavitation solid-liquid mixing cyclone extraction is conducted to obtain the extracting solution, the extraction solutions are combined and concentrated, a concentrated solution and a low-level solvent are mixed, then negative pressure cavitation liquid-liquid extraction is conducted, an extracting liquor is obtained, an extract is obtained after concentration, ethyl alcohol is added for redissolving, and thus a solution 1 is obtained; the extracted maca filtering residues are extracted again through hot water, an extracting solution is obtained after filtering, and a solution 2 is obtained after concentration; the solution 1 and the solution 2 are combined and dried, and extractives of the effective constituents of the maca are obtained. The method for extracting the effective constituents from the maca has the advantages that the technological process is simple, the production cycle is short, the effective constituents can be efficiently extracted, products can maintain the original flavor of the maca, used equipment is conventional equipment, production cost is low, and industrial production is easy to achieve.

The invention discloses a method for preparing a red algae agar fiber. The method comprises the following steps of: cleaning fresh red algae, removing impurities and air-drying; crushing red algae and removing color; extracting agar polysaccharide with hot water, purifying and drying to obtain agar polysaccharide which is suitable for spinning; preparing an agar polysaccharide spinning solution with a certain concentration, performing wet spinning by using an ethanol aqueous solution or DMF (Dimethyl Formamide) aqueous water as a coagulating bath to obtain spinnable agar fiber; and washing, performing ethanol dehydration and air-drying to obtain a fiber material. The method has the advantage of fully utilizing living marine resources along with low-cost and readily available raw materials; and the obtained agar fiber is a pure natural alginate fiber, has high biocompatibility and biodegradability and can be used for clothing industry and pharmaceutical industry.

The invention discloses a method for preparing nitrogen-doped activated carbon by using melamine waste OAT. The method comprises the following steps: adding activated carbon, or wood chips or carbonized wood chips into an ethanol-aqueous solution with the volume ratio of (0:10)-(10:0), then adding the melamine waste OAT, stirring for 1-8 hours, performing ultrasonic treatment for 10-60 min, performing oxygen-free heating at a high-temperature furnace with the temperature of 400-900 DEG C for 10-300 min, and then performing acidification and washing to obtain the nitrogen-doped activated carbon. According to the method, the characteristic that the melamine wastes OAT contains large amounts of nitrogen is utilized, and activated carbon doping process is performed at different process conditions, so that not only is industrial solid waste OAT treated, but also the polarity of the activated carbon is improved, and functional groups on the surface of the activated carbon are increased. The pollution treatment capacity of the activated carbon for heavy metal ions in gas and liquid as well as organic materials is greatly improved compared with ordinary activated carbon.

The invention relates to a preparation method of a porous scaffold material and discloses a preparation method of a nano-fibrous silk fibroin-based porous scaffold. The preparation method comprises the following steps: blending a silk fibroin solution and a collagen solution under the temperature of 0-20 DEG C, standing to ensure the complete reaction of collagen and silk fibroin and generate nano-fiber; freezing the mixed solution to obtain a freezing body; performing freeze drying treatment on the freezing body to obtain a nano-fibrous porous scaffold material; and placing the nano-fibrous porous scaffold material in a vacuum drier with water and methanol, or an ethanol aqueous solution at the bottom, vacuumizing, and then standing to obtain the water-insoluble nano-fibrous porous scaffold. The obtained porous scaffold has 10-1000 microns of communicated pores. The pore walls consist of 10-100nm of nano-fibers; and the porous scaffold has similar nanoscale structures and micronscalestructures to extracellular matrix, is suitable for the adhesion and growth of cells and has good biocompatibility.

The present invention relates to a composition for the prevention and treatment of diabetic complications, which contains an extract obtained by: crushing and drying any one selected from Euphorbiae radix, gingered Magnolia bark, parched Puerariae radix and Glycyrrhizae radix; extracting the dried herbal material with alcohol or aqueous alcohol solution: filtering the extract; and concentrating the filtrate under reduced pressure. Alternatively, the composition contains a mixture of extracts from Euphorbiae radix, gingered Magnolia bark, parched Puerariae radix and Glycyrrhizae radix, the amount of each of the herbal extracts being 5-85% by weight based on 100% by weight of the herbal extract mixture. Alternatively, the composition contains magnolol obtained by: extracting Magnolia bark with aqueous 80% ethanol solution at ambient temperature for 24 hours; systematically separating the extract in the order of normal-hexane, ethyl acetate and normal-butanol; selecting the normal-hexane layer and separating the selected layer into pre-fractions by normal silica gel chromatography; comparing the pre-fractions with the standard form magnolol on TLC to determine a magnolol-enriched fraction; and separating magnolol from the magnolol-enriched fraction by silica gel column chromatography.

The invention relates to Chinese medicinal composition granules and a preparation method thereof. The Chinese medicinal composition granules comprise the following ruptured powder in part by weight: 3 to 18 parts of American ginseng ruptured powder, 1 to 24 parts of pseudo-ginseng ruptured powder, 6 to 36 parts of dendrobium ruptured powder, and 9 to 45 parts of root of red-rooted salvia ruptured powder, wherein the granularity D90 of the ruptured powder is between 5 and 75 mu m. The invention also provides a method for preparing the Chinese medicinal composition granules. The method comprises the following steps of: uniformly mixing the American ginseng ruptured powder, pseudo-ginseng ruptured powder, dendrobium ruptured powder, and root of red-rooted salvia ruptured powder of which the D90 is between 5 and 75 mu m; preparing a soft material by adopting aqueous ethanol at the concentration of over 20 vol percent; and after granulating by using a granulator with 10 to 30 meshes, drying and finishing the granules to obtain the Chinese medicinal composition granules. The Chinese medicinal composition granules are applied to preventing and regulating human cardiac-cerebral vascular system diseases and sub-health state such as weak immunity and fatigability, have the obvious advantages of high medical effect, high quality uniformity, convenient carrying and administration, safety, reliability, and the like, and can meet the requirement on modern fast-paced lifestyle.

The invention provides a method for preparing ergothioneine. The method takes mushrooms or leftovers as raw materials and comprises the following steps: extracting the raw materials in water or an ethanol water solution with the volume percent concentration of 5 percent to 30 percent at the temperature of 70 DEG C to 95 DEG C; sequentially separating and purifying an extracted product through macroporous resin and polyamide resin; collecting an eluting solution and concentrating to obtain ergothioneine extract. Compared with the prior art, the extract with the ergothioneine content of 20 percent to 98 percent can be obtained and the content is much higher than 1 percent to 5 percent in the prior art. The ergothioneine prepared by the invention can reach requirements of industrialized production and lays a foundation for further development and utilization of the ergothioneine extract.

A tamper-resistant pharmaceutical dosage form comprising a pharmacologically active ingredient embedded in a prolonged release matrix, which comprises a prolonged release matrix material selected from the group consisting of nonionic acrylic polymers and waxy materials and which provides prolonged release of the pharmacologically active ingredient, resistance against solvent extraction, resistance against grinding, and resistance against dose-dumping in aqueous ethanol.

The invention discloses a preparation method of an ethanol-permselective POSS (polyhedral oligomeric silsesquioxanes) / silicone rubber composite membrane and belongs to the technical field of pervaporation membrane separation. A membrane liquid formed by mixing of silicone rubber, POSS, a cross-linking agent, a catalyst and a solvent is prepared; a porous support PVDF (polyvinylidene fluoride) base membrane is coated with the membrane liquid; and the POSS / silicone rubber composite membrane is obtained through deep cross-linking. The obtained POSS / silicone rubber composite membrane has excellent ethanol-permselective performance for ethanol aqueous solutions with low concentration (1wt%-30wt%), and the separation factor alpha obtained is 1.70 and the permeation flux J is 0.15 kg / m2h under the optimum condition for ethanol aqueous solutions with the concentration of 10wt%.

The invention discloses a synthesis and preparation method of fasudil hydrochloride, which comprises the steps of taking 5-isoquinoline sulfoacid as raw material, refluxing in thionyl chloride to obtain 5-isoquinoline sulfonyl chloride hydrochloride, adding dichloromethane after dissolving with ice water, adjusting pH value of the solution to be neutral and performing liquid eparation; washing organic phase with water and edible salt, drying and filtering to obtain dichloromethane solution of 5-isoquinoline sulfonyl chloride; performing reaction of the solution with high purity piperazine in the presence of other alkaline reagents, washing the reaction solution with hydrochloric acid aqueous solution and sodium hydroxide aqueous solution after reaction, and extracting the washing solution respectively with dichloromethane; combining organic phases, washing with water, drying and filtering, and dropwise adding saturated hydrogen chloride ethanol solution to separate out crude product of fasudil hydrochloride; and recrystalizing the crude product with ethanol aqueous solution to obtain fasudil hydrochloride. The method provided by the invention greatly reduces the usage amount of high purity piperazine that is expensive by using deacidifying agents that are low in cost so as to reduce the preparation cost of fasudil hydrochloride effectively.

The present invention discloses one kind of glabrous greenbrier total saponin extract and its preparation process and use. The extraction process includes the following steps: 1. percolation extracting glabrous greenbrier with water solution of alcohol and merging the extracted liquid; 2. concentrating the extracted liquid while recovering alcohol; 3. extracting with ethyl acetate for several times and merging the extracted liquid; and 4. drying the extracted liquid to obtain the glabrous greenbrier total saponin extract while recovering ethyl acetate. The glabrous greenbrier total saponin extract contains glabrous greenbrier total saponin in 50-80 wt%, and astilbin in 20-40 wt%. The present invention features the simple technological process, and high glabrous greenbrier total saponin and effective component content in the extract. The glabrous greenbrier total saponin extract has obvious inhibition on various kinds of inflammation reaction and immune response, and may be used in preparing corresponding medicine.

The invention belongs to a preparation method for preparing a polymer skeleton with the surface coated with HKUST-1 through 3D printing, and an application of a polymer skeleton. The preparation method comprises the following steps: printing the polymer skeleton according to a structure specified in a model file by using a 3D printer, and adding the polymer skeleton into an ethanol water solution containing copper salt and trimesic acid; stirring and dripping triethylamine into the ethanol water solution; drying an obtained product at normal temperature or at 50-80 DEG C; soaking the product in methanol, and during the period, replacing the methanol solvent once every 8 hours; drying at the normal temperature or at 50-80 DEG C. According to the preparation method disclosed by the invention, the reaction conditions in the preparation process are moderate, the synthesis is performed at the normal pressure, no pressure equipment is required, the grain size of crystals which form the HKUST-1 is from 20 nanometers to 5 micrometers, the HKUST-1 is uniformly distributed on the surface of a polymer, and the full coverage rate is basically realized. The prepared polymer skeleton with the surface coated with the HKUST-1 has a remarkable dye adsorption effect, and the adsorption efficiency can be over 90%.

The invention discloses a freeze-etching agent of ultra-low-carbon steel casting billet macrograph grain structure, and a preparation method thereof. The freeze-etching agent is prepared from materials of: 30 to 50g of ferric chloride, 0.5 to 1.2g of stannous chloride, 2 to 3 parts of trinitrophenol, 10 to 20ml of sodium alkyl phenyl sulfonate, 200 to 500ml of absolute alcohol, and 600 to 1000ml of hydrochloric acid. Solid agents of the formulation are mixed and placed into a glass vessel according to the ratio; 1500 to 2000ml of distilled water is divided into two parts; one part is added to the solid mixed agents, and the other part is preserved for later use; absolute alcohol is added to the preserved part of distilled water; hydrochloric acid is added to the alcohol solution; sodium alkyl phenyl sulfonate is added to the aqueous solution containing agents such as ferric chloride, and the mixture is uniformly stirred; the alcohol + hydrochloric acid solution is then added to the aqueous solution containing the agents such as ferric chloride; the solution is sufficiently stirred, such that the freeze-etching agent is prepared. With the freeze-etching agent, the form of the ultra-low-carbon continuous casting steel billet macrograph grain structure can be clearly shown. The freeze-etching agent provided by the invention has advantages of high detection speed, low pollution, and convenient operation. Also, the freeze-etching agent is energy-saving.

The invention relates to a method for preparing SPE (solid polymer electrolyte) anodic oxygen evolution catalysts for water electrolysis. The method mainly includes steps of dissolving precursors of metal salt, such as RuCl3, H2PtCl6, H2IrCl6 and the like, into ethanol / water solution, regulating the pH (potential of hydrogen) value of the solution by NaHCO3 ethanol / water, then ageing, separating, washing, roasting and the like, so that noble metal oxides with high oxygen evolution activity are prepared. Accordingly, the noble metal load amount is reduced, and cost of the SPE water electrolysis technology is lowered, and foundation for further commercialized application of the SPE water electrolysis technology is laid.

The invention discloses a preparation method of a biodegradable nano-microsphere. The method comprises the following steps: 1, dissolving a biodegradable material into an organic solvent to obtain a solution A; 2, adding an emulsifier solution to the solution A, and carrying out ultrasonic dispersion to obtain an emulsified liquid; 3, carrying out negative pressure distillation on the emulsified liquid and discharging the organic solvent to prepare a suspension liquid; 4, pouring the suspension liquid into ethanol water, washing, standing, participating and filtering to obtain filtrate; and 5, carrying out spray drying on filtrate to obtain the biodegradable nano-microsphere. In addition, the invention further discloses an application of the prepared biodegradable nano-microsphere. The biodegradable nano-microsphere prepared by the invention is milk white, transparent or semi-transparent, tasteless, and uniform and consistent in particle size, and can completely meet the nano-microsphere size requirements for injection and application. The biodegradable nano-microsphere is combined with medical hydrogel, and can respectively play good filling and repairing roles at a short period, a middle period and a long period after being injected into a body.

The invention discloses a method for extracting a maslinic acid and oleanolic acid containing mixture from olea europaea L. pomace. The method comprises the following steps of: extracting an extract from the olea europaea L. pomace in an 80-95wt% (weight percent) ethanol aqueous solution, concentrating the extract, redissolving the extract in a 20-70wt% ethanol aqueous solution, adsorbing by using a macroporous adsorption resin, removing water-soluble impurities by using a water-washing resin column, desorbing by using a desorbing solution, mixing the desorbing solution, recovering the desorbing solution, and drying to obtain a maslinic acid and oleanolic acid containing extract. The mixture extracted from the olea europaea L. pomace contains more than 30% of maslinic acid and more than 23% of oleanolic acid.

The invention relates to a catalyst used in a reaction for producing ethylene by ethanol dehydration, which is characterized in that the catalyst of the invention consists of HZSM-5, in which the ratio of the 0.5 to 7 percent of one or a plurality of kinds of active metallic components by weight to the 5 to 30 percent of amorphous silica-alumina gel and skeleton silica-alumina by weight is 5 to 300. In the reaction implemented in a fixed bed fluid reactor, the catalyst of the invention can achieve high conversion rate and high selectivity for converting ethanol to ethylene under the conditions of normal pressure, reaction temperature of 200 to 290 DEG C and reactant airspeed of 0.1-10h<-1>, and with 10 to 100 percent of the ethanol water solution as raw reaction materials. Under optimized conditions, the ethanol conversion rate, the vapor ethylene selectivity and the overall ethylene yield all approximate 100 percent. The catalyst of the invention is used for the reaction for producing ethylene by ethanol dehydration, and has the outstanding features of wide concentration range of the raw reaction material solution, lower reaction temperature and wider airspeed range, does not need the preliminary gasification of the raw reaction material solution, does not use the inert diluent gas, and has high catalyst activity and selectivity as well as long catalytic life.

Methods and systems for obtaining zein and / or xanthophylls in highly pure form. Zein is first extracted from corn using aqueous ethanol. Suspended corn solids are separated, and the resulting extract is purified in a single size-exclusion chromatography step to separate impurities and produce substantially purified zein. The chromatography step may simultaneously produce substantially purified xanthophylls.

The invention relates to an external preparation made from Chinese herbal medicines, specifically to a film-spraying agent for treating acute soft tissue injuries. 1000ml of the film-spraying agent in the invention is composed of the following raw materials: a Chinese herbal extract extracted from 20-60g of rheum officinale, 20-60g of Cacumen Platycladi, 10-30g of Cortex Phellodendri amurensis, 10-30g of Herba Lycopi and 10-30g of mint by ethanol, 2-6g of borneol, 0.4-1.2g of menthol, 2-6g of chlorobutanol, 30-60g of polyvinylpyrrolidone, 1-8g of hydroxypropyl methyl cellulose, and the rest ethanol water with a volume concentration of 30-40%. During application, the film-spraying agent of the invention is directly sprayed on the injured part and can form a film in 8 minutes. With good anti-inflammation, pain easing, stasis removing, acute soft tissue injury improving and microcirculation improving, as well as antibacterium effects, the film-spraying agent provided in the invention has an obvious effect in treating acute soft tissue injuries such as sprains, contusions and other local injuries, and redness, swelling, heat, pain, wound surface infection, as well as other aspects.

The invention relates to a method for preparing ethylene by catalytic dehydration of ethanol and mainly solves the problems in the prior art that a dehydration catalyst of the ethanol has higher cost and the yield of the ethylene is low. For better solving problem, the invention adopts the technical scheme that the ethylene is generated by contacting a reaction raw material of 5-100 weight percent ethanol water solution with a catalyst under the condition that the reaction temperature is 250-500DEG C and the liquid hourly space velocity is 0.1-25 hour<-1> relative to the ethanol, wherein the used catalyst comprises the following components in parts by weight: 0.5-30 parts of heteropoly acid and 70-99.5 parts of alumina; and the heteropoly acid is at least one selected from H3PMo12O40.nH2O, H4SiW12O40.nH2O or H3PW12O40.nH2O. The invention can be applied to the industrial production for preparing the ethylene by catalytic dehydration of ethanol.