202 results about "Polyvinyl acetate" patented technology

The invention discloses a cement-based aerogel heat preservation and heat insulation coating material for concrete and a spraying construction process of the cement-based aerogel heat preservation and heat insulation coating material, and belongs to the technical field of concrete materials. The coating material is prepared from powder, composite emulsion and water, and the powder is prepared by mixing superfine sand, cement, modified silicon dioxide-carbon nanotube composite aerogel powder, hollow glass beads, nanofibers, graphene nanosheets, an ultraviolet light absorber, a water reducing agent and a defoaming agent. The composite emulsion is composed of an acrylate copolymer emulsion, a polyvinyl acetate-ethylene emulsion, a temperature-sensitive polymer emulsion and a coalescing agent. Based on the multi-stage pore network and multi-component emulsion optimization design and multi-component synergistic effect, the material has good fluidity after being mixed, and has low heat conductivity coefficient, high strength and high toughness after being hardened; the construction technology of high-pressure water flushing and layered spraying is provided, and the method has the advantages of being efficient in construction, stable in quality and the like and can be applied to heat preservation and heat insulation of a concrete structure in a severe environment.

The invention relates to the technical field of plastic films, and provides a degradable plastic film and a preparation method thereof.The mode that microorganisms are placed between an inner layer film and an outer layer film in advance is adopted, auxiliary degradation of the degradable plastic film after use is achieved, the meeting and matching links of the degradable plastic film and the microorganisms in the external environment are reduced, and the degradation efficiency of the degradable plastic film is improved. The degradable plastic film is good in degradation environment matching performance and shorter in degradation period and comprises an inner-layer film and an outer-layer film, the inner-layer film and the outer-layer film are formed in a heating and rolling mode, a plurality of film-closing-free areas are arranged between the inner-layer film and the outer-layer film, microbial carriers are arranged in the multiple film-closing-free areas, and the microbial carriers are arranged between the inner-layer film and the outer-layer film. The inner layer film and the outer layer film are both formed by casting matrix plastic, and the matrix plastic is prepared from the following raw materials in parts by weight: 55 to 68 parts of polyvinyl chloride, 40 to 50 parts of polylactic acid, 22 to 28 parts of polyvinyl acetate, 15 to 20 parts of plant straw, 7 to 10 parts of ionic compound, 11 to 14 parts of flexibilizer, 14 to 20 parts of coupling agent and 13 to 16 parts of strength additive.

The invention discloses a seed coating containing an arbuscular mycorrhizal inoculant. The seed coating is prepared from the following components in parts by weight: 25 to 35 parts of the arbuscular mycorrhizal inoculant, 35 to 45 parts of a soil conditioner, 15 to 20 parts of talcum powder and 15 to 20 parts of polyvinyl acetate. The invention further provides a preparation method of the seed coating containing the arbuscular mycorrhizal inoculant and application of the seed coating to reduction of soil heavy metal pollution, increase of disease resistance and stress resistance of crops and promotion of crop growth. The seed coating containing the arbuscular mycorrhizal inoculant wraps the surfaces of plant seeds, provides good nutritional ingredients for growth and development of the seeds, and is beneficial to improving the germination rate of the seeds under heavy metal cadmium stress, reducing soil heavy metal cadmium pollution, improving soil quality, increasing soil fertility and improving disease resistance and stress resistance of crops; growth of seedlings is promoted, and crop quality and yield are improved.

The invention provides a CIS chip grinding protection liquid and a preparation method and application thereof. The CIS chip grinding protection liquid comprises the following components in parts by weight: 15-25 parts of silane modified polyvinyl acetate; 50 to 100 parts of a diluent; 0.5 to 6 parts of an anti-gel auxiliary agent; the anti-gel auxiliary agent is a high-boiling-point alcohol. The silane modified polyvinyl acetate is one or more of 3-amino propyl triethoxy silane modified polyvinyl acetate, 3-chloropropyl triethoxy silane modified polyvinyl acetate, methyl triethoxy silane modified polyvinyl acetate and 3-(diethoxy ethyl) amino propyl triethoxy silane modified polyvinyl acetate. According to the CIS chip grinding protection liquid, a layer of protection film can be formed on the surface of a wafer to ensure that the wafer is not damaged by external force in the grinding process, the yield of the CIS chip is further improved, and the CIS chip grinding protection liquid has good application prospects and industrial popularization value in the field of semiconductor processing.

The application discloses a kind of hydrolysis-resistant acetylacetamide modified polyvinyl alcohol and preparation method thereof, and the preparation method comprises the following steps: double vinyl ketone and first and alcohol amine compound are reacted to generate N-(hydroxyalkyl) acetylacetamide intermediate;Then trichloro cyanogen and N-(hydroxyalkyl) acetylacetamide intermediate are reacted to generate 3,5-bis[acetylacetamide alkoxyl] monochloro s-triazine;Finally, 3,5-bis[acetylacetamide alkoxyl] monochloro s-triazine is reacted with PVA in polar solvent to generate AAM-PVA.The AAM-PVA prepared in the application can be used as a protective colloid for polyvinyl acetate emulsion polymerization, and the prepared emulsion adhesive has obvious improvement in water resistance, tensile strength and stability;The raw materials of the application are cheap and easy to obtain, the preparation process is simple, the reaction conditions are mild, and there is no waste water and waste gas emission.

The present disclosure relates to cementing fluids including a latex and a cement. In an exemplary embodiments, the latex includes a first polymer and a second polymer; the first polymer includes at least about 80 mol % polyvinyl acetate; the second polymer has a general structure in which x is an overall molar ratio of styrene, y is an overall molar ratio of butadiene, and z is an overall molar ratio of carboxylic acid; a sum of x, y, and z is represented as s; styrene (x) is about 20% to about 30% of s; butadiene (y) is about 70% to about 80% of s; and carboxylic acid (z) is 0% to about 2% of s.

The invention discloses a composite fiberboard and a preparation method thereof, and belongs to the technical field of artificial boards. Comprising the following raw materials in parts by weight: 34-45 parts of wood fiber, 17-26 parts of composite resin, 7-13 parts of hydroxymethyl cellulose, 5-9 parts of aluminate cement, 4-8 parts of talcum powder, 11-16 parts of polyvinyl alcohol, 9-14 parts of polyvinyl acetate emulsion, 7-11 parts of urea-formaldehyde resin adhesive, 5-9 parts of polyacrylate and 1.2-2.5 parts of a composite coupling agent. According to the composite fiberboard, the water resistance of the composite fiberboard can be improved, and the problem that harmful substances containing formaldehyde and the like are released is solved.

The invention relates to a humidity-adjustable anti-condensation coating which comprises the following components in parts by weight: 10-25 parts of expanded microspheres, 15-40 parts of an emulsion, 0-5 parts of rutile titanium dioxide, 1.7-5.9 parts of an auxiliary agent and the balance of water, wherein the total amount is 100 parts; the expanded microspheres are prepared by heating and expanding unexpanded microspheres at 60-80 DEG C; the emulsion is elastic acrylic emulsion and / or polyvinyl acetate emulsion. The expanded microspheres and the polymer emulsion are compounded, other porous or heat insulation materials are not needed, the formed coating can absorb a large amount of water vapor under high humidity and release the water vapor under low humidity, wall surface dew formation and mildew caused by too high environment humidity are avoided, the coating has an ultra-low heat conductivity coefficient, and the coating can be widely applied to wall surface decoration. The moisture condensation condition caused by the fact that the wall surface temperature is lower than the water vapor dew point is effectively avoided, and the excellent moisture adjusting, heat preservation and moisture condensation preventing capacities are achieved. Besides, gas is sealed in the expanded microspheres, and when external force acts on the coating, the shell of the expanded microspheres is made of the flexible polymer, so that structural damage can be reduced and the anti-condensation effect of the coating can be maintained when the expanded microspheres are subjected to the external force.

The invention discloses a solubility-resistant fluoride-free aqueous film-forming foam extinguishing agent and a preparation method thereof, and relates to the technical field of extinguishing agents. The invention discloses a soluble-resistant fluoride-free aqueous film-forming foam extinguishing agent. The cleaning agent is prepared from the following raw materials in parts by weight: 8 to 12 parts of a compound surfactant, 15 to 20 parts of modified polyvinyl acetate, 3 to 5 parts of modified xanthan gum, 5 to 8 parts of ethylene glycol butyl ether, 4 to 6 parts of propylene glycol, 0.5 to 1 part of benzotriazole, 0.3 to 0.6 part of triethanolamine, 0.2 to 0.4 part of disodium ethylene diamine tetraacetate, 0.8 to 1.2 parts of hydroxyethyl cellulose, 0.1 to 0.3 part of polyether modified silicone oil and 0.05 to 0.1 part of isothiazolinone. 6-9 parts of ammonium dihydrogen phosphate and the balance of deionized water. According to the anti-dissolution fluoride-free aqueous film-forming foam extinguishing agent, fluoride-free components are more environmentally friendly, and the requirement for green development is met; the compound surfactant has a synergistic effect with the modified polyvinyl acetate and the modified xanthan gum, so that the fire extinguishing efficiency and the solubility resistance are improved; the process is clear, parameters are clear, the product stability is good through ultrasonic dispersion and high-pressure homogenization treatment, the performance is optimized through multiple additives, and the application scene is wide.

A method of manufacturing sugar cane polyvinyl alcohol wherein sugar cane bagasse is processed into polyvinyl alcohol. Processing raw materials including sugar cane bagasse and deionized water. Enzymatically hydrolyzing and using saccharification on the sugar cane bagasse to obtain sugar cane bagasse enzymatic hydrolysate. Fermenting the sugar cane bagasse solution. Distilling the fermented sugar cane bagasse solution to obtain ethanol solution and lignin solution. Transferring the distilled solutions to an ethylene plant area to obtain a polymer grade ethylene product. Transferring the polymer grade ethylene product to an acetic acid evaporator to generate vinyl acetate. Introducing the vinyl acetate into an autoclave with methanol solution wherein said solutions undergo a reflux reaction process. Ethyl acetate is then dissolved in methanol to prepare a polyvinyl acetate solution which undergoes alcoholysis wherein the product is then washed and deionized, yielding polyvinyl alcohol.

The application belongs to the technical field of drug dissolution and dispersion, and particularly relates to a bunazosin water-based solution preparation and a preparation method. The bunazosin water-based solution preparation provided by the application comprises the following components: bunazosin, gamma-cyclodextrin, lecithin, polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol graft copolymer, aspartame and water. The above components are mixed to be homogeneous to prepare an oral solution which is uniform, clear and can be stored for a long time. The scheme of the application further enriches the dosage form of bunazosin, improves the convenience of taking bunazosin, and is expected to help improve the oral bioavailability and absorption efficiency of bunazosin. The scheme of the application also provides a reference direction for the mechanism research on the dissolution and dispersion behavior of the insoluble bunazosin macromolecule in a water medium.

The present invention provides a solid dispersion of compound 1 or a pharmaceutical salt thereof, comprising the compound 1 or the pharmaceutical salt thereof as an active ingredient and a carrier material, wherein the carrier material is selected from one, two, or more of polyvinylpyrrolidone (PVP), copovidone, polyvinylpyrrolidone-vinyl acetate copolymer, hydroxypropyl methylcellulose acetate succinate, polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol graft copolymer, hydroxypropyl methylcellulose, polyethylene glycol, and ethyl cellulose, enabling the drug to have good stability, dissolution, and therapeutic effects. The formulation of the present invention provides rapid drug release and can reduce the oral burden of large-dose tablets on menopausal patients, thereby improving treatment compliance and treatment efficiency.

The invention relates to the technical field of road engineering materials, in particular to an asphalt composite additive with warm mixing and odor removing functions. The invention provides an asphalt composite additive with warm mixing and odor removing functions. The asphalt composite additive is prepared from the following components in parts by weight: 50 to 60 parts of polyethylene, 30 to 45 parts of polyvinyl acetate, 20 to 30 parts of maleic anhydride grafted polyethylene, 35 to 50 parts of modified nano activated carbon and 15 to 25 parts of calcium stearate, a metal oxide and a silane coupling agent are loaded on the modified nano activated carbon, and the metal oxide is a mixture of copper oxide, manganese oxide and cerium oxide. The asphalt composite additive with the warm mixing and odor removing functions has the warm mixing and odor removing functions at the same time, after the composite additive is added into asphalt, the pavement performance and the processing performance of the asphalt are not affected, the mixing temperature of the asphalt can be reduced by 25-40 DEG C, and meanwhile the odor removing and smoke removing effects are excellent.

This invention provides an equivalent substitute, its preparation method, and its application for testing the mechanical properties of RDX-based non-aluminum-containing press-loaded explosives under temperature load. The equivalent substitute is prepared by replacing the energetic material RDX in the RDX-based non-aluminum-containing press-loaded explosive formulation with the non-energetic material ammonium sulfate. The equivalent substitute is used to replace the actual explosive for testing its mechanical properties under temperature load. The equivalent substitute, by mass percentage, comprises the following raw material components: 95.5%–96.5% ammonium sulfate, 2%–3% polyvinyl acetate, and 0.5%–1.5% stearic acid, with the total mass percentage of the above components being 100%. The mechanical properties of the molded explosive charge made with the equivalent substitute provided by this invention, such as compressive strength and tensile strength (compressive strength of 2.9-27.3 MPa and tensile strength of 1.1-5.9 MPa at -55 to 70°C), are basically consistent with those of real explosives under different temperature loads. This can truly reflect the changes in the mechanical properties of the actual explosive charge during environmental and aging tests, and can provide data support for the mechanical failure assessment of explosives.

The utility model discloses an anti-slip coiled material packaging film, which relates to the technical field of packaging films and comprises a main film body, an inner composite anti-slip agent layer and an outer composite anti-slip agent layer, a base material layer is arranged in the main film body, the inner composite anti-slip agent layer is arranged at the lower end of the base material layer, a polyurethane waterproof layer is arranged at the upper end of the base material layer, and the outer composite anti-slip agent layer is arranged at the lower end of the polyurethane waterproof layer. Meanwhile, the upper end of the polyurethane waterproof layer is connected with a polyethylene oil-resistant layer, the upper end of the polyethylene oil-resistant layer is provided with a polyvinyl acetate layer, the upper end of the polyvinyl acetate layer is provided with a polyvinyl alcohol layer, the upper end of the polyvinyl alcohol layer is connected with an outer composite anti-slip agent layer, and an adhesive strip is additionally arranged on the left side of the exterior of the main film body. And release paper is additionally arranged outside the sticking strip. According to the anti-skid coiled material packaging film, the friction force of the packaging film can be increased, commodities are prevented from sliding in the packaging process, and the overall practicability and the use efficiency of the coiled material packaging film are improved.

The present invention relates to a solid dispersion comprising enzalutamide or its pharmaceutically acceptable salts, hydroxypropyl methylcellulose phthalate (HPMCP), soluplus® (polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol), surfactant, and optionally at least one pharmaceutically acceptable excipient. The present invention also relates to a pharmaceutical composition comprising the solid dispersion of enzalutamide and its use for treating prostate cancer. The present invention further relates to a process for preparation of the solid dispersion of enzalutamide and the pharmaceutical composition comprising the solid dispersion of enzalutamide.

The invention belongs to the technical field of glass fiber surface treatment, and particularly relates to a glass fiber stranded twistless roving impregnating compound and a preparation method and application thereof. The glass fiber stranded twistless roving impregnating compound comprises 3-10 wt.% of an effective component and 90-97 wt.% of water, the effective component comprises a coupling agent, a water dispersant, a film-forming agent, a lubricant, a flexibilizer, an antistatic agent and a pH value regulator, the water dispersant is a mixture of a fatty alcohol and ethylene oxide condensate, polyethylene oxide and polycarboxylate, and the film-forming agent is a mixture of a fatty alcohol and ethylene oxide condensate. The film-forming agent is a mixture of polyester emulsion, epoxy resin emulsion and polyvinyl acetate emulsion. The application is that the glass fiber stranded twistless roving impregnating compound is used for coating production of glass fiber stranded twistless roving. After being chopped, the coated glass fiber stranded twistless roving still has good monofilament ability and dispersion uniformity in gypsum slurry.

The invention discloses a preparation method of coated gift packaging paper. The preparation method comprises the following operation steps: S1, pulping: respectively pulping bleached sulfate softwood chemical pulp, bleached sulfate broadleaf wood chemical pulp and alkaline hydrogen peroxide bleached poplar chemimechanical pulp, and mixing to form mixed pulp; s2, auxiliary material adding, wet paper sheet forming and pre-drying; s3, coating and sizing are conducted, specifically, the front face and the back face of the paper sheet are coated with a coating respectively, and the coating comprises coating-grade light calcium carbonate, coating-grade talcum powder, a dispersing agent, sodium hydroxide, modified acrylic copolymer emulsion, polyvinyl acetate latex, coating starch, sodium carboxyl cellulose, a lubricating agent and a defoaming agent; s4, carrying out post-drying and carrying out super-soft calendering treatment by adopting eight rollers and seven pressing areas; the invention also provides the coated gift packaging paper prepared by adopting the preparation method, the smoothness of the coated gift packaging paper is greater than 1200s, the roughness of the coated gift packaging paper is less than 1.2 microns, and the coated gift packaging paper completely meets the requirements of the coated gift packaging paper for absorbing and drying gravure or flexographic printing water-based ink.

A kit for preparing a cured article may include: first and second casting compositions configured to form a curable composition; and an additive delivery composition for introducing an additive into the curable composition. The additive delivery composition includes a liquid carrier and at least one additive. The liquid carrier may include one or more of polyvinyl acetate, polyvinyl alcohol, or polyacrylate. A mold assembly for preparing a cured article may include a first mold body defining a first mold chamber and a recess surrounding the first mold chamber. The mold assembly further includes a second mold body defining a second mold chamber and a tongue surrounding the second mold chamber. The tongue portion can be received in the groove to secure the first and second mold bodies. The first and second mold chambers together define a mold volume configured to receive and shape the curable composition.

The invention discloses high-temperature-resistant coated paper and a preparation method thereof, and belongs to the technical field of coated paper. The PE coated paper is prepared from raw materials including PBAT, PLA, a chain extender, modified montmorillonite, polyvinyl acetate, a slipping agent, an antistatic agent and a hindered phenol antioxidant through the steps of melt blending, extrusion granulation, PE coated compounding and the like. Wherein the modified montmorillonite is prepared by reacting specific phenolic acid with tertiary amine in a mixed solvent to generate a grafted compound and compounding the grafted compound with montmorillonite. Compared with the prior art, the coated paper has the advantages of good thermal stability, low wear-resistant loss, simple preparation process and easily available raw materials, is suitable for high-temperature or high-frequency friction use scenes, and has a good application prospect.

The application discloses acetoacetamide modified polyvinyl alcohol and a preparation method thereof, and the preparation method comprises the following steps: reacting p-ester and an acetoacetamide reagent at 20-80 DEG C for 1-3h in a polar solvent to generate N-acetoacetyl p-ester; then, the N-acetoacetyl p-ester is mixed with an alkaline catalyst and polyvinyl alcohol, and is added into a double-screw reaction extruder to generate N-acetoacetyl p-ester modified polyvinyl alcohol crude product; finally, the crude product is powdered, washed with methanol for three times to remove the catalyst and reaction inorganic salt, and is filtered and dried to obtain the N-acetoacetyl p-ester modified polyvinyl alcohol. The AAE-PVA prepared by the application can be used as a protective colloid for polyvinyl acetate emulsion polymerization, has better water resistance than common polyvinyl alcohol, and the water resistance, tensile strength and stability of the prepared emulsion adhesive are obviously improved. The synthesis steps of the application are simple, the safety risk is low, and the reaction yield is high.

Provided is a shoe sole member which is formed such that at least part of the outer surface thereof serves as a ground-contacting surface and which includes an elastomer substrate and a plurality of particles distributed throughout the elastomer substrate, wherein the material of the plurality of particles is at least one material selected from the group consisting of silicone, polyurethane, polystyrene, polyolefin, and polyvinyl acetate.

This invention discloses a water-soluble environmentally friendly adhesive for colored pencils and its preparation method, belonging to the field of functional adhesive preparation technology. By weight, its components include: 6-8 parts water-based solid acrylic resin, 20-30 parts polyvinyl acetate emulsion, 35-40 parts vinyl acetate-ethylene copolymer emulsion, 5-7 parts functional vinyl acetate-ethylene copolymer emulsion, 30-35 parts vinyl acetate-acrylic emulsion, 5-7 parts water-based vinyl chloride copolymer emulsion, 3-5 parts tackifying emulsion, 1-2 parts adhesion promoter, 0.5-0.8 parts crosslinking agent, 3-5 parts plasticizer, 0.1-0.5 parts additives, 15-18 parts deionized water, and an appropriate amount of ammonia. This environmentally friendly adhesive can achieve good bonding between colored pencil leads and the wood of the pencil barrel. When sharpening, the wood chips of the pencil barrel roll up and are not easily broken, showing good application prospects.

The present invention relates to the technical field of waterproof boards, and provides a highly weather-resistant metal composite waterproof board and a preparation method thereof. The highly weather-resistant metal composite waterproof board sequentially comprises a weather-resistant coating, an organic film layer, a bonding layer, a metal plate, a corrosion-resistant layer, and a PE board from top to bottom. The organic film layer comprises one of a PVC film, a TPO film, an EPDM film, a TPR film, and a fluorocarbon film. The bonding layer comprises the following components in parts by weight: 65-75 parts of SEBS, 28-36 parts of polyvinyl acetate, 5-8 parts of tackifier, 10-15 parts of filler, and 2-4 parts of stabilizer. The filler comprises zinc oxide-coated potassium titanate whiskers. Through the above technical solution, the problems of low peel strength and poor weather resistance of the metal composite waterproof board in the related art are solved.

The present application relates to a carbon paste composition and a method of producing the same. The carbon paste composition comprises polyvinylcarbazole (PVK) and a tailored mixture of solvents. The PVK is used as a semiconducting binder replacing the conventionally used poly(vinyl acetate) found in commercial carbon-based pastes. This carbon paste composition is suitable for use in the preparation of perovskite solar cells or other types of organic electronics. This application also discloses a method to deposit the carbon paste composition in a perovskite solar cell.

The present invention discloses a method for determining the content of diethyl hexyl sebacate in polyvinyl acetate. The method comprises the following steps: (1) adding a dissolving solvent to a pretreated polyvinyl acetate sample, and after the sample is completely dissolved, adding a main precipitant dropwise to the solution until no polymer continues to precipitate, then adding a co-precipitant dropwise until the precipitation is complete, and constant volume with the co-precipitant as a test solution, wherein the co-precipitant is selected from one of isopropanol, water and heptane; (2) preparing a standard working solution; (3) performing gas chromatography-mass spectrometry analysis on the standard working solution and the test solution. The assay method proposed by the present invention can meet higher detection requirements, such as reducing the detection limit, and the method also has the advantages of being simple to operate and fast, and has a very wide range of application prospects.

An article is described comprising a first film layer comprising polylactic acid polymer (semicrystalline polylactic acid polymer; amorphous polylactic acid polymer; or a mixture thereof); a second (e.g. polyvinyl acetate) polymer having a Tg of at least 25° C.; plasticizer. In some embodiment, the film layer further comprises inorganic pigment and / or hydrolysis stabilizer. In other embodiments, the film has a net melting endotherm, ΔHnm1, of less than 10 J / g. Also described are methods of making a graphic film.

This invention discloses a modified aeolian sand road base material, composed of the following parts by weight: aeolian sand: 620-635 parts; fine aggregate: 1030-1055 parts; coarse aggregate: 3510-3580 parts; modified aeolian sand powder: 230-265 parts; cement: 50-80 parts; superabsorbent polymer: 0.32-0.96 parts; water: 425-525 parts. The modified aeolian sand is a composite modified aeolian sand of metakaolin, phosphogypsum, and triethanolamine, and is cured using a water glass-polyvinyl acetate composite curing agent. The modified aeolian sand has characteristics such as small particle size, high specific surface area, strong reactivity, and good viscosity. Adding it to base materials can improve their mechanical properties, volume stability, and durability, and it has low cost and good economic benefits, showing good application potential in cementitious materials and pavement materials.

The present invention relates to a kind of dexmedetomidine hydrochloride orally disintegrating film, in which the orally disintegrating film contains dexmedetomidine hydrochloride 0.1-10% and film-forming material 90%-99.9% by weight, wherein the film-forming material is selected from any one of copolyvidone, polyethylene caprolactam polyvinyl acetate polyethylene glycol graft copolymer, hydroxypropyl methylcellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol, polyoxyethylene, povidone, and poloxamer or a combination thereof. The dexmedetomidine hydrochloride orally disintegrating film of the present invention has fast disintegration time in the oral cavity, good mechanical extrusion performance, good film-forming performance, high content uniformity, meets the requirements such as cutting, packaging, transportation and clinical use, significantly improves its dissolution and dissolution rate, stability and bioavailability, and does not need to be taken with water, significantly improves the compliance of children patients, and ensures safe and effective medication.

1. Name of the designed product: packing barrel (polyvinyl acetate emulsion). 2. Use of the designed product: for packing. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo best indicating the design points: perspective view.