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33results about How to "High transdermal efficiency" patented technology

Long-acting viscose dispersing type transdermal patch and preparing process thereof

The invention discloses a long-acting viscose dispersing type transdermal patch and a preparing process thereof and belongs to the medical technical field. The transdermal patch is mainly prepared from bulk pharmaceutical chemicals (such as non-steroid anti-inflammatory drug ibuprofen and salt form thereof, naproxen and salt form thereof, ketoprofen, indometacin and salt form thereof), a penetration enhancer (menthol, oleic acid, medium chain triglyceride, propylene glycol monolaurate, azone, propylene glycol and the like), a dispersing solvent (water, acetone, ethanol, carbinol, ethyl acetate and the like), a polyacrylate pressure-sensitive adhesive (crylic acid, butyl acrylate, crylic acid 2-ethylhexyl ester and the like), a backing layer and a release liner. The long-acting viscose dispersing type transdermal patch and the preparing process thereof have the advantages that drugs can be released from a matrix continuously for 12-48 h, the number of drug residues is low, transdermic absorption property is excellent, and dosing frequency and dosing amount can be reduced; skin irritation is avoided, and adhesion and compliance are high; main drugs and additives are stable in a viscose mechanism; preparing technology is simple, and pollution is avoided.
Owner:CHINA PHARM UNIV

Moisturizing essence cream and preparation method thereof

The invention relates to moisturizing essence cream. The moisturizing essence cream is prepared by taking a phase A, a phase B, a phase C and a phase D as raw materials through methods of mixing, emulsifying, homogenizing and the like for multiple times. The moisturizing essence cream has the beneficial effects that the moisturizing essence cream mainly adopts a three-dimensional protection structure consisting of sodium hyaluronate, ceramide, PCA sodium and peptides; composite peptide composed of palmitoyl pentapeptide-4 and poly (tripeptide-6) has the relatively good effects of promoting skin regeneration and supplementing collagen of the skin, and can rapidly provide energy for the skin; and the moisturizing cream can deeply penetrate through the skin surface layer, so that the transdermal efficiency of macromolecular components is effectively improved, the absorptivity of active nutrient components is enhanced, and the moisturizing effect is better.
Owner:广州市逸轩精细化工有限公司

Metformin hydrochloride cream and preparation method thereof

The invention discloses metformin hydrochloride cream and a preparation method of the metformin hydrochloride cream. The metformin hydrochloride cream is prepared from the following components: metformin hydrochloride as the active ingredient, an oil-phase solid ingredient, a consistency regulator, a humectant, an emulsifying agent, a skin penetration enhancer, a pH regulator, a preservative, a stabilizer, an aromatic and water, specifically, the metformin hydrochloride cream is prepared from the following components in percentage by mass: 0.1%-10% of metformin hydrochloride, 1%-15% of the oil-phase solid ingredient, 5%-20% of the consistency regulator, 3%-10% of the humectant, 0.5%-5% of the emulsifying agent, the skin penetration enhancer, the pH regulator, the preservative, the stabilizer and the aromatic with the corresponding mass percentages, the balance of water. The invention provides the metformin hydrochloride cream having good skin penetration effect of the active ingredients and high stability, through optimization of the skin penetration enhancer for the cream, the skin penetration efficiency of metformin hydrochloride is improved, and the side effects caused by the medicine are greatly reduced while the blood sugar concentration in the body of a patient is effectively reduced.
Owner:江苏山信药业有限公司

Transdermal delivery based pharmaceutical composition and preparation method and application thereof

The present invention discloses a transdermal delivery based pharmaceutical composition. The composition comprises a compound as shown in a formula (I) or pharmaceutically acceptable salt thereof, a macromolecular dispersing carrier material, a hot melting protecting agent and an optional fluxing agent. A preparation method of the transdermal delivery based pharmaceutical composition comprises thesteps of micronizing the compound as shown in the formula (I) or the pharmaceutically acceptable salt thereof, the macromolecular dispersing carrier material and the hot melting protecting agent, optionally adding the fluxing agent, mixing the components uniformly, and performing hot melting extrusion and micronizing to obtain microparticles of the compound as shown in the formula (I) or the pharmaceutically acceptable salt thereof. In addition, the invention provides an application of the pharmaceutical composition. The transdermal delivery based pharmaceutical composition can enable the compound as shown in the formula (I) to be quickly absorbed, so that the purpose of calming before anesthesia is achieved, breathing is not affected, and the adverse psychological effects on children dueto intramuscular injection or intravenous injection are avoided. Meanwhile, the pharmaceutical composition also can be used for preventing and / or treating hyperactivity.
Owner:YICHANG HUMANWELL PHARMA

Cell infiltration enhancing peptide, composition and application of composition

The invention relates to a cell infiltration enhancing peptide, a composition comprising the cell infiltration enhancing peptide and combination thereof, peptide factors and optional ATP and application of the composition in cosmetics or skin care products. The invention further relates to a preparation method of the composition. The cell infiltration enhancing peptide and the combination thereofcan effectively enhance a transdermal effect of the peptide factors and other active large molecules, and then beauty and skin care effects of the peptide and the combination thereof can be better achieved.
Owner:HARVEST BIOTECH CO LTD

Composition for treating acne and external gel thereof as well as preparation method of external gel

ActiveCN107753582AFormulations - taking into account the high transdermal efficiencyTaking into account the high transdermal efficiencyOrganic active ingredientsAerosol deliverySocial benefitsBletilla striata
The invention discloses a composition for treating acne. The composition is prepared from the following components in percentage by mass: 29 to 33 percent of peony seed oil, 48 to 54 percent of bletilla striata polysaccharide and 15 to 19 percent of aloe polysaccharide, wherein the sum of the mass percent of all the components is 100 percent. The invention also discloses the external gel of the composition and a preparation method of the external gel. The composition for treating the acne, disclosed by the invention, is based on the compatibility theory of traditional Chinese medicine and is prepared by selecting the peony seed oil, the bletilla striata polysaccharide and the aloe polysaccharide as raw materials; meanwhile, a preparation of the composition, namely nano emulsion gel, with the characteristics of high penetration efficiency and delayed release is obtained. The drawbacks of skin irritation and drug resistance in existing local administration of the acne are overcome; in addition, the composition has the characteristics of safety, no toxicity and good effects; meanwhile, comprehensive utilization of oil peony, bletilla striata polysaccharide and aloe resources is improved, the industrial chain is extended and certain social benefits are produced.
Owner:XIAN MEDICAL UNIV

Soothing vitality cream and preparation method thereof

The invention relates to a soothing vitality cream using a phase A, a phase A1, a phase B, a phase C, a phase D, a phase E, a phase F and a phase G as raw materials. The cream is prepared by steps ofextraction, purification, multiple mixing, emulsification, homogenization and the like. The soothing vitality cream has beneficial effects: the soothing vitality cream is prepared by combining the ginger from the Mariesiya plateau and several kinds of plant extracts and has a good soothing effect; the body dryness can be soothed; the nutrition required by the skin can be supplemented; the vitalityis provided; the skin of the body becomes fine and smooth to show the charm and the natural luster.
Owner:北京极暖网络科技有限公司

Inclusion essence capable of immediately brightening skin and preparation method of inclusion essence

ActiveCN109125189ACannot reach the effect of sterilizationGood biocompatibilityCosmetic preparationsToilet preparationsPhosphateWhitening Agents
The invention relates to the technical field of skincare products, in particular to an inclusion essence capable of immediately brightening skin and a preparation method of the inclusion essence. Theinclusion essence comprises the following raw materials in parts by weight: 15-20 parts of microcrystalline cellulose, 0.1-6.0 parts of coenzyme Q10, 10-15 parts of protein phosphate, 0.01-1.5 parts of protein silk peptide, 1.0-1.5 parts of carbomer resin, 0.01-2.0 parts of a yeast extract, 5-10 parts of rose essential oil, 0.1-1.0 part of hydroxypropyl methyl, 0.01-3.0 parts of a whitening agent,8-18 parts of a moisturizing agent and 2-7 parts of an antioxidant. The inclusion essence provided by the invention has strong biocompatibility and no damage to the skin; a lipid-soluble active substance is prepared into lipid inclusion base granules according to a nano-inclusion technology; the inclusion essence can effectively improve the stability and biological activity of the active substance, promote the transdermal efficiency of the active substance, also effectively reduce the irritancy of the active substance, improve bioavailability to a human body, effectively inhibit the activityof tyrosinase, prevent pigmentation, and repair epidermal cells to achieve whitening and moisturizing effects and make the skin bright and moisturized.
Owner:广东巴松那生物科技有限公司

Lidocaine hydrochloride transdermal ointment and preparation method thereof

The invention discloses a lidocaine hydrochloride transdermal ointment, comprising a lidocaine hydrochloride paste agent and a transdermal enhancer, wherein the transdermal enhancer consists of mango butter and menthol. Because of the synergism of the mango butter and menthol, the lidocaine hydrochloride has high transdermal efficiency reaching 17.09%, good skin softening property and high oxidation resistance, functions of softening skin, smoothing, moisturizing and protecting skin and low price.
Owner:张志堂

Tapentadol pharmaceutical composition for transdermal administration as well as preparation method and application of pharmaceutical composition

The invention discloses a pharmaceutical composition for transdermal administration. The pharmaceutical composition contains tapentadol or a pharmaceutically acceptable salt thereof, a polymer dispersion carrier material, a hot-melt protective agent and an optional solubilizer. A preparation method of the pharmaceutical composition includes the following steps: mixing the tapentadol or the pharmaceutically acceptable salt thereof, the polymer dispersion carrier material, the hot-melt protective agent and the optional solubilizer, performing hot-melt extrusion, and performing micronization to obtain the microparticles of the tapentadol or the pharmaceutically acceptable salt thereof. The pharmaceutical composition for the transdermal administration can make the tapentadol or the pharmaceutically acceptable salt thereof rapidly absorbed, and achieve the purpose of sedation before anesthesia without affecting breathing, thereby avoiding the adverse psychological effects of intramuscular injection or intravenous injection acupuncture on children; and at the same time, the pharmaceutical composition can also be used to prevent and / or treat and delay the development of Parkinson disease.
Owner:YICHANG HUMANWELL PHARMA

Wrinkle-removing essence cream and preparation method thereof

The invention relates to wrinkle-removing essence cream. The wrinkle-removing essence cream is prepared by taking a phase A, a phase B and a phase C as raw materials and adopting methods of mixing, emulsifying, homogenizing and the like for a plurality of times. The wrinkle-removing essence cream has the beneficial effects that the wrinkle-removing essence cream can deeply penetrate through the skin surface layer, the transdermal efficiency of macromolecular components is effectively improved, the absorption rate of active nutritional ingredients is enhanced, the wrinkle-removing effect is better, and the prepared finished product has good wrinkle-removing, moisturizing and skin-tendering effects, can effectively remove free radicals, prevent oxidized cells, repair damaged cells and timelysupplement collagen and active substances, can keep the skin vitality and restore the skin gloss, can remove wrinkles for a long time, can effectively improve the problems of dryness, tightness and fine lines of the skin, does not cause skin allergy and has better whitening and moisturizing effects on the skin.
Owner:广州市逸轩精细化工有限公司

Preparation method of silica gel plaster

According to the preparation method of the silica gel plaster, the silica gel plaster is composed of a base material layer, an adhesive layer and a traditional Chinese medicine microcapsule transdermal absorbent, the base material layer is a backing layer, and the adhesive layer is prepared from polymerized silica gel formed by polydimethylsilane, vinyl polysiloxane and cellulose and the traditional Chinese medicine microcapsule transdermal absorbent. The traditional Chinese medicine microcapsule transdermal absorbent is composed of a traditional Chinese medicine extract, propylene glycol, menthol, azone and fumed silica. The unique superiority of the silica gel is fully utilized, the silica gel is fused into a traditional plaster patch through technical improvement, the problem that the silica gel and alcohol substances are insoluble is well solved through a saturated cellulose technology, and the silica gel plaster patch is free of irritation, low in allergy rate, good in skin affinity and free of toxic and side effects. When the plaster patch is stripped from the skin, pain and pain caused by taking down body hair together are avoided, the silica gel has a good moist feeling on the surface of the skin, body surface moisture can be prevented from being evaporated, cuticles can be better softened, medicine can be better absorbed, and the treatment effect of the medicine can be achieved through a tendon channel.
Owner:德州昌诚新材料有限公司

A pulse mask device

The invention relates to a pulse mask device, comprising a mask body and a pulse control host, wherein the mask body comprises an inner layer, an outer layer and a conductive layer; the conductive layer is arranged between the inner layer and the outer layer and comprises a non-woven fabric and conductive electrode layers on two sides of the non-woven fabric; the pulse control host comprises a positive electrode output end and a negative electrode output end; the mask body comprises a forehead portion, an electrode connecting portion is separately formed close to the forehead portion at the upper ends of the conductive electrode layers on the two sides, the pulse control host is arranged outside the forehead portion of the mask body, and the positive electrode output end and the negative electrode output end of the pulse control host are respectively electrically connected with the electrode connecting portions on the two sides of the forehead portion.
Owner:嘉兴笼列电子商务有限公司

Supramolecular fat emulsion glycosylglycerol composition, preparation method and application thereof, moisturizing body lotion and moisturizing essence

The invention relates to the technical field of cosmetics, and discloses a supramolecular fat emulsion glycosylglycerol composition with long-acting high moisturizing performance as well as a preparation method and application of the supramolecular fat emulsion glycosylglycerol composition. The composition is prepared from the following components: 1 to 30 parts of oily functional components, 0.1 to 5 parts of soybean lecithin, 0.1 to 8 parts of PEG-40 hydrogenated castor oil, 3 to 5 parts of pentanediol, 0.01 to 2 parts of tocopheryl acetate, 0.01 to 2 parts of sodium oleate, 0.01 to 2 parts of EDTA-2Na (Ethylene Diamine Tetraacetic Acid), 0.1 to 5 parts of glycosylglycerol and 30 to 80 parts of water. According to the composition, through the synergistic effect of a supramolecular technology of nano-wrapping an oily component and a water-soluble component glycosylglycerol, the moisturizing effect can be enhanced, meanwhile, the duration of the moisturizing effect can be remarkably prolonged, and a long-acting and high-moisturizing effect and a refreshing and non-greasy skin feeling are provided.
Owner:SHENZHEN SHINESKY BIOLOGICAL TECH CO LTD

Polymer microneedle and preparation method thereof

The invention discloses a polymer microneedle and a preparation method thereof. The polymer microneedle is prepared from a polymer solution doped with silk fibroin. According to the polymer microneedle disclosed by the invention, on one hand, the silk fibroin is added into the polymer microneedle, so that the mechanical property of the polymer microneedle is enhanced, the moisture retention is improved, the dissolution rate of the polymer microneedle can be regulated and controlled, and the release effect can be controlled; on the other hand, the silk fibroin doped in the polymer microneedle can penetrate through the cuticle of the skin, so that the problems of low transdermal rate and poor effect of the existing mask, emulsion or cream containing the silk fibroin are solved; the polymer microneedle doped with the silk fibroin enhances the transdermal efficiency of the silk fibroin and has a better cosmetic effect.
Owner:惠州市微针科技有限公司

Sufentanil pharmaceutical composition for transdermal administration as well as preparation method and application of composition

The invention discloses a pharmaceutical composition for transdermal administration. The pharmaceutical composition comprises sufentanil or a pharmaceutically acceptable salt thereof, a polymer dispersion carrier material, a hot-melt protective agent and an optional solubilizer. The pharmaceutical composition for transdermal administration is obtained by the following steps: mixing the sufentanilor the pharmaceutically acceptable salt thereof, the polymer dispersion carrier material, the hot-melt protective agent and the optional solubilizer, performing hot-melt extrusion and micronization toobtain microparticles of the sufentanil or the pharmaceutically acceptable salt of the sufentanil. In addition, the invention provides a preparation method and application of the above pharmaceuticalcomposition. According to the pharmaceutical composition for transdermal administration, the sufentanil can be quickly absorbed, the purpose of treating postoperative pain without affecting breathingcan be achieved, and adverse psychological effects of intramuscular injection or intravenous injection acupuncture on patients can be avoided; and at the same time, the pharmaceutical composition canbe used to prevent and / or treat postherpetic neuralgia.
Owner:YICHANG HUMANWELL PHARMA

Alfentanil pharmaceutical composition for transdermal administration as well as preparation method and application of pharmaceutical composition

The invention provides an alfentanil pharmaceutical composition for transdermal administration as well as a preparation method and application of the pharmaceutical composition. The pharmaceutical composition for transdermal administration disclosed by the invention comprises alfentanil or a pharmaceutically acceptable salt thereof, a polymer dispersion carrier material, a hot-melt protective agent and an optional solubilizer, the pharmaceutical composition is obtained by the steps of mixing the alfentanil or the pharmaceutically acceptable salt thereof, the polymer dispersion carrier material, the hot-melt protective agent and the optional solubilizer, and performing hot-melt extrusion and micronization to obtain microparticles of the alfentanil or the pharmaceutically acceptable salt ofthe alfentanil. In addition, the invention provides the preparation method and application of the above pharmaceutical composition. According to the pharmaceutical composition for transdermal administration, the alfentanil or the pharmaceutically acceptable salt thereof can be quickly absorbed to achieve the purpose of pain anesthesia in treating without affecting breathing, and avoids the adversepsychological effects brought to patients by intramuscular injection or intravenous injection; and at the same time, the pharmaceutical composition can also be used to prevent and / or treat skin itching.
Owner:YICHANG HUMANWELL PHARMA

Pharmaceutical composition of morphin-6-glucuronid for transdermal administration and preparation method and application of pharmaceutical composition

The invention discloses a pharmaceutical composition for transdermal administration. The pharmaceutical composition comprises morphin-6-glucuronid or a pharmaceutically acceptable salt thereof, a polymer disperse carrier material, a hot melt protecting agent and an optional fluxing agent, wherein the pharmaceutical composition for transdermal administration is prepared by mixing the morphin-6-glucuronid or the pharmaceutically acceptable salt thereof, the polymer disperse carrier material, the hot melt protecting agent and the optional fluxing agent, and then carrying out hot melt extrusion and micronization to obtain particles of the morphin-6-glucuronid or the pharmaceutically acceptable salt thereof. In addition, the invention further provides a preparation method and application of thepharmaceutical composition. According to the pharmaceutical composition for transdermal administration, the morphin-6-glucuronid or the pharmaceutically acceptable salt thereof can be quickly absorbed to achieve the target of postoperative analgesia without affecting breathing, so that an adverse psychological effect to a patient caused by acupuncture of intramuscular injection or intravenous acupuncture is avoided; and meanwhile, the pharmaceutical composition can also be used for preventing and / or treating lumbar and cervical diseases of the patient.
Owner:YICHANG HUMANWELL PHARMA

Ionic liquid-reversed-phase micelle drug-loading delivery system for epidermal desensitization treatment, preparation method and application thereof

The invention belongs to the technical field of biological medicines, and particularly relates to an ionic liquid-reversed-phase micelle drug-loading delivery system for epidermis desensitization treatment and preparation thereof. The ionic liquid-reverse micelle drug-loading delivery system is prepared from an ionic liquid prepared from a choline compound and an organic carboxylic acid and reverse micelles wrapping protein allergens. According to the prepared ionic liquid-reversed-phase micelle drug-loading delivery system, the cuticle structure is disturbed through the ionic liquid, lipid fluidization is promoted, and the transdermal efficiency of reversed-phase micelles is enhanced; the skin affinity of the protein allergen is improved through the reverse micelle, the protein stability is improved, and the release is controlled; and the ionic liquid-reversed-phase micelle drug-loading delivery system prepared by the invention is simple and convenient in synthesis process, high in transdermal efficiency, easy for local drug delivery of skin, good in safety and suitable for clinical desensitization treatment requirements.
Owner:CHINA PHARM UNIV

Medical transdermal patch

The invention discloses a medical transdermal patch. The patch sequentially comprises a backing layer, a viscose layer I, a skeleton layer, a viscose layer II and an anti-viscose layer from top to bottom. The skeleton layer is characterized by being made from, by weight, 40-50 parts of a isoborneyl acrylate / isoimperhol / glycerin monooleate / polyethylene glycol monoallyl ether / 1-allyl-3-methylimidazole chloride / 6-O-allyl-beta-cyclodextrin copolymer, 8-12 parts of active ingredients, 4-6 parts of DL-aminocaprolactam amidated alginate, 8-12 parts of a penetration enhancer, 0.01-0.03 part of fusionprotein, and 1-2 parts of transdermal functional Chinese herbal extracts. The medical transdermal patch has an excellent transdermal effect, the air permeability is good, the storage stability is good, no irritation is caused to the skin, drug release can be effectively controlled, the patch takes effect rapidly and the treatment effect is good.
Owner:湖南博隽生物医药有限公司

Preparation method for support layer material with lasting water retention for hydrogel patch

The invention discloses a preparation method for a support layer material with lasting water retention for a hydrogel patch, and belongs to the technical field of preparation of hydrogel patches. The method comprises the following steps: washing, removing, unthreading and freezing pomelo peel to prepare pieces, and cooling, grinding and adding mint leaves and eucalyptus leaves into de-ionized water to prepare mixed slurry; performing stirring and suction filtration on the pomelo peel pieces and the mixed slurry to prepare modified pomelo peel pieces, crushing the modified pomelo peel pieces into powder, adding an ethanol solution, pectin, sodium alginate and glycerin, and performing stirring mixing and rotary evaporation concentration to obtain a concentrated solution; preparing a coiled thin film from the concentrated solution to obtain a substrate material, melting polyethylene, uniformly coating the surface of the substrate material with the molten polyethylene, and performing cooling to room temperature to obtain the support layer material with lasting water retention. Examples show that the preparation method is convenient to operate; by a prepared support layer of the hydrogel patch, water loss can be effectively reduced, the adhesion property of the hydrogel patch can be improved, and the transdermal absorption efficiency of active ingredients in the hydrogel patch can be improved; the preparation method has broad application prospect.
Owner:雷春生

Transdermal penetration-promoting composition and application thereof in timolol preparation

The invention provides a transdermal penetration-promoting composition for improving the transdermal absorption effect of timolol. The transdermal penetration-promoting composition is prepared from 65-98wt% of albolene and 2-35wt% of wax substances. The transdermal penetration-promoting composition can achieve the cumulative penetration amount of timolol of about 92.61 micrograms per square centimeter within 8 hours without additionally using other conventional transdermal penetration-promoting agents, the transdermal absorption promoting effect is remarkable, the skin irritation is low, and the safety is higher.
Owner:WUHAN CONFORM PHARMA CO LTD

A kind of inclusion essence capable of instantly brightening skin tone and preparation method thereof

The invention relates to the technical field of skin care products, in particular to an inclusion essence capable of instantly brightening skin tone and a preparation method thereof. The essence includes the following raw materials in parts by weight: 15-20 parts of microcrystalline cellulose, 0.1-0.1 parts of coenzyme Q10 6.0 parts, protein-phospholipid 10-15 parts, protein silk peptide 0.01-1.5 parts, carbomer resin 1.0-1.5 parts, yeast extract 0.01-2.0 parts, rose essential oil 5-10 parts, hydroxypropyl methylcellulose 0.1-1.0 parts, whitening agent 0.01-3.0 parts, moisturizing agent 8-18 parts, antioxidant 2-7 parts. The essence of the present invention has strong biocompatibility and no damage to the skin. The fat-soluble active substance is made into lipid inclusion matrix by using nano-encapsulation technology, which can effectively improve the stability and biological activity of the active substance, and promote the production of the active substance. The transdermal efficiency can also effectively reduce the irritation of active substances, improve the bioavailability of them by the human body, and at the same time effectively inhibit the activity of tyrosinase, prevent the generation of pigmentation, and repair epidermal cells to achieve the effect of whitening and moisturizing , making the skin bright and moist.
Owner:广东巴松那生物科技有限公司

Multifunctional transdermal absorption promoter, and preparation method and application thereof

The invention discloses a multifunctional transdermal absorption promoter, and a preparation method and application thereof. The multifunctional transdermal absorption promoter is a compound shown ina formula (I). The preparation method comprises the following steps: firstly, performing a reaction on chitosan subjected to pegylation and vitamin E to prepare vitamin E-linked chitosan, and then adding hyaluronic acid to perform a reaction to prepare the multifunctional transdermal absorption promoter. The multifunctional transdermal absorption promoter provided by the invention can obviously improve water solubility of insoluble nutrients in cosmetics, also has a good effect of promoting transdermal absorption, and has the advantages of low cost, good transdermal absorption promotion effect, good moisturizing effect, good biocompatibility, biodegradability and the like. The multifunctional transdermal absorption promoter is a new transdermal absorption promoter, can be applied to preparation of cosmetics and transdermal drug delivery preparations, and has a high application value and a good application prospect. The preparation method has the advantages of simple process, convenientoperation, easy availability of raw materials, low cost and the like, is suitable for large-scale preparation, and is beneficial to industrial application.
Owner:杜立波
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