76 results about "Ethyl lactate" patented technology

The invention relates to the technical field of chemical production energy conservation, in particular to an ethyl lactate production waste heat utilization energy-saving heat circulation device which comprises a heat exchanger. The driving assembly comprises a mounting plate arranged on the outer wall of the heat exchanger; the idling assembly is arranged on the outer side of the driving assembly and comprises a moving block; the feeding assembly comprises a material storage disc arranged on the outer wall of the idling assembly, a feeding channel designed from top to bottom is arranged in the material storage disc, feeding and discharging ports are formed in the two ends of the outer wall of the feeding channel and need to penetrate through the outer wall of the material storage disc, and a discharging disc is arranged on the outer side of the material storage disc; the catalyst is conveyed into the heat exchanger through the driving assembly, the idling assembly controls the transmission cylinder to idle and drives the feeding assembly to throw out the catalyst, so that automatic feeding is achieved, meanwhile, the arch-shaped rod is used for actively stirring a solution and the catalyst to improve the reaction rate, and the problems existing in the prior art are effectively solved.

SOLVENT COMPOSITIONS The present invention relates to a solvent composition for solvent-based paints or other coatings characterized in that it comprises a combination of dimethyl glutarate and at least one other compound selected from isobutyl acetate, ethyl lactate, dimethyl 2-methylglutarate, 2-methyltetrahydrofuran, ethyl acetate, cyclopentyl methyl ether, dithoxymethane, dimethyl carbonate, dimethyl succinate, benzyl alcohol, dimethyl adipate, and glyceryl triacetate. Fig. 1

The invention discloses Leishan fish sauce sour essence as well as a preparation method and application thereof. The leishan fish sauce acid essence is prepared from ethyl acetate, absolute ethyl alcohol, ethyl isovalerate, ethyl hexanoate, isoamyl alcohol, furfuryl alcohol, ethyl lactate, ethyl caprylate, acetic acid, diethyl succinate, methyl salicylate, ethyl benzoate, ethyl laurate, hexanoic acid, phenethyl alcohol, 4-methyl guaiacol, ethyl myristate, ethyl palmitate, ethyl oleate, capsicum oleoresin, ethyl phenylacetate and ginger oil. And lactic acid, glycerol triacetate, ocimene, ethyl isovalerate, ethyl butyrate, anethole and phenylacetaldehyde. The Leishan fish sauce sour essence disclosed by the invention is soft and harmonious in overall fragrance, natural and vivid, still has stable flavor characteristics at high temperature, can make up the problem of flavor deficiency in sour soup products, realizes accurate reproduction and controllable release of composite fragrance, improves the standardization level of products, and effectively improves the preference degree of consumers.

The invention relates to pediococcus acidilactici b1274 and application thereof, and belongs to the technical field of beneficial bacterium application. The pediococcus acidilactici b1274 is preserved in the China Center for Type Culture Collection on September 24, 2025, the preservation number is CCTCC M 20252094, and the pediococcus acidilactici b1274 is obtained by separation and purification from distiller's yeast. The pediococcus acidilactici can be used for preparing microbial enhanced distiller's yeast, is applied to brewing of fen-flavor liquor, and can improve the content of ethyl acetate, ethyl lactate and total acid in the liquor and reduce the content of acetaldehyde at the same time. Compared with a production control group, the content of ethyl acetate is increased by 50.0%, the content of ethyl lactate is increased by 8.1%, the total acid is increased by 46.4%, the acetaldehyde is reduced by 48.4%, the brewed white spirit shows the style of faint scent, purity, mellowness, fullness, softness, sweetness, freshness, long aftertaste and mellow and prominent acid ester taste, and a safe and reliable functional strain and a technical scheme are provided for improving the quality of the fen-flavor white spirit.

The present application relates to a preparation method of high-efficiency stable mulberry root extract containing oxyresveratrol and its application in relieving skin itching, and belongs to the technical field of cosmetics. The preparation method of the mulberry root extract containing oxyresveratrol comprises the following steps: drying and crushing the root of a mulberry tree, adding the crushed root into an aqueous solution of a eutectic solvent to perform ultrasonic extraction, centrifuging the product to obtain the mulberry root extract containing oxyresveratrol. The present application is based on a green solvent system composed of betaine and 1,3-propanediol / ethyl lactate, and combines with mild ultrasonic conditions to realize the efficient extraction of oxyresveratrol from the mulberry root, so that the extraction rate is improved and the risk of high-temperature oxidation is avoided. Moreover, the obtained extract can not only long-acting inhibit the itch receptor MRGPX1, but also is suitable for sensitive skin due to the removal of irritating components, and has high efficiency and biocompatibility, thereby breaking through the environmental pollution and technical bottleneck of the traditional method and having a wide market application prospect.

The invention discloses a dust suppression material based on calcium slow-release crosslinking. The dust suppression material comprises 2-6 parts of xylan, 9-85 parts of sodium chloroacetate, 0.12-0.85 part of calcium chloride, 0.6-1 part of citric acid, 1-2 parts of ethyl lactate, 24-56 parts of a basifier, 1-9 parts of a wetting agent and 1500-3000 parts of distilled water. Xylan is modified through carboxymethylation reaction, a calcium slow-release system is constructed to control the release rate of Ca < 2 + >, slowly released Ca < 2 + > is wrapped by carboxyl of adjacent xylan chains to form local crosslinking points, Ca < 2 + > serves as a molecular bridge, and linear molecular chains are connected into a stable three-dimensional network; the prepared dust suppression material has high wetting and permeability, high bonding strength, high water-retaining property, high environmental durability and a long-acting dust suppression effect.

The invention belongs to the technical field of microorganisms, and particularly relates to talaromyces amestokiae as well as a separation and screening method and application of the talaromyces amestokiae. In order to simultaneously regulate and control the contents of ethyl lactate, acetic acid and isoheteroacid in the Luzhou-flavor liquor, the invention provides the Imistoc talaromyces capable of reducing acid and increasing milk in the Luzhou-flavor liquor, and the preservation number is CGMCC No. 42174. The strain is subjected to single-bacterium enhanced fermentation in Luzhou-flavor liquor, and in the presence of Daqu, the fermentation efficiency of the Luzhou-flavor liquor can be remarkably improved, alcoholic fermentation is promoted, and the ethanol content is increased. The content of esters in the Luzhou-flavor liquor can be regulated and controlled, the taste and quality of the Luzhou-flavor liquor are improved by increasing the content of ethyl lactate and reducing the content of isoheteroacid and acetic acid, the liquor flavor is more coordinated, the Luzhou-flavor is more prominent, and the blending difficulty is reduced.

The application discloses a strain of Staphylococcus carnosus and application of the strain in improving sour taste of soy sauce, and belongs to the technical field of food fermentation. The Staphylococcus carnosus CS1.21 is first isolated from soy sauce mash, and has the characteristics of salt tolerance, strong acid production, ester production and bacteriostasis. The strain is used for fermenting high-salt dilute soy sauce, and can effectively produce lactic acid, acetic acid and succinic acid, and the production of lactic acid, acetic acid and succinic acid is respectively increased by 28.13%, 27.78% and 50.00% compared to the soy sauce without adding the CS1.21. Meanwhile, the accumulation of ester substances is promoted, and the content of the ester substances is increased by 86.23% compared to the soy sauce without adding the CS1.21, wherein the content of ethyl lactate and ethyl acetate is respectively increased by 70.11% and 85.76%. The addition of the Staphylococcus carnosus CS1.21 is beneficial to improving the sour taste of the soy sauce, and can improve the quality and flavor of the soy sauce without adding preservatives.

The application relates to the technical field of oil-proof agent emulsion production, in particular to high-peeling-force oil-proof agent emulsion and a preparation method and application thereof. The oil-proof agent emulsion comprises the following raw materials in mass fractions: 32-35 parts of epoxy soybean oil acrylate; 12-15 parts of amino-polyether-modified polysiloxane; 4.5-5 parts of 1H, 1H, 2H, 2H-perfluorohexyl triethoxysilane; 6-8 parts of hyperbranched reinforcing agent; 4-5 parts of nano-modifier; 13-15 parts of diluent; 2.5-3 parts of photoinitiator; 1-1.2 parts of stabilizer; and 33.5-35 parts of ethyl lactate. The application constructs a synergistic system of low toxicity, high strength and light transmission through surface functionalization of short-chain fluorosilane, network enhancement of hyperbranched polymer and multifunctional integration of core-shell nanoparticles, and provides an oil-proof agent solution scheme with performance and safety for the field of 3D printing.

The utility model discloses a kind of ethyl lactate catalytic esterification reaction equipment, belong to ethyl lactate field.A kind of ethyl lactate catalytic esterification reaction equipment, including reaction box, further include: at least three reaction boxes, fixedly installed in the reaction box, three the reaction box is communicated by pipeline each other, the reaction box is fixedly connected with several baffle in, make the reaction box inner chamber form a serpentine water channel;The utility model is set up by three reaction boxes, can effectively delay ethyl lactate raw material flow, make it and the catalytic piece on the flow guide seat fully contact, improve ethyl lactate catalytic esterification quality, and, under the condition that ethyl lactate raw material is continuously injected, reaction box inside can form a stable reaction area, to realize continuous processing, effectively improve the efficiency of ethyl lactate catalytic esterification.

The invention provides an application of ethyl lactate in prevention and treatment of alcoholic related liver diseases. Specifically, animal experiments are carried out by establishing an alcoholic related liver disease mouse model, and in-vivo and in-vitro experiments are carried out to verify that the ethyl lactate dose-dependently improves the alcoholic related liver disease. Experiments show that ethyl lactate inhibits alcohol-induced lipid synthesis, and the liver metabolism level is regulated by up-regulating expression of SIRTI and FGF21, so that the alcoholic related liver diseases are improved. Based on the invention, the ethyl lactate or the pharmaceutically acceptable salt thereof can be used for preparing the medicine for preventing and treating the alcoholic related liver diseases.

This invention discloses a process for producing sake based on multi-strain mixed fermentation and its flavor profile, belonging to the field of sake brewing technology. This invention provides a method using japonica rice from Northeast China as raw material, employing multi-strain, sequential low-temperature fermentation to regulate ester, acid, and alcohol production during the sake fermentation process. This results in a sake product with flavor compounds at levels and proportions comparable to Japanese sake. The strains include *Rhizopus oryzae*, *Rhizopus chinensis*, *Issaccharomyces orientalis*, and *Saccharomyces cerevisiae*. Compared to existing technologies, the microbial combination, inoculation amount, and inoculation sequence of this invention, combined with synergistic saccharification and fermentation, achieves a ratio of isoamyl acetate, ethyl hexanoate, ethyl lactate, and ethyl acetate, as well as a total ester content, reaching the levels of typical Japanese sake.

The present application relates to the technical field of liquor quality. The present application utilizes the same fungus Eurotium cristatum SXHBTBU1934 CGMCC NO.21026 as yeast to independently ferment wheat, and then utilizes the fermented wheat as "microbial filter material" to filter distilled liquor. The specific method for improving liquor quality by utilizing microbial fermentation material comprises the following steps: filtering liquor body by adsorption material to obtain filtered liquor body; mixing the filtered liquor body with washing-removing material to obtain washing-removed liquor body; and performing fine filtration on the washing-removed liquor body to obtain product liquor body. By utilizing the method of the present application, the compounds such as ethyl oleate and ethyl linoleate, which have negative influence on the flavor of liquor and have viscosity, can be reduced in the liquor body; meanwhile, the acid ester compounds such as ethyl octanoate are increased, which adds fruit flavor to the liquor body, but does not destroy the flavor balance of the four flavoring substances such as ethyl acetate, ethyl lactate, ethyl butyrate and ethyl hexanoate, and does not affect the main taste of the liquor body.

The invention belongs to the field of traditional Chinese medicine compounds, and particularly relates to a method for simultaneously extracting tanshinone IIA and salvianolic acid B from salvia miltiorrhiza. According to the specific technical scheme, the preparation method comprises the following steps: putting salvia miltiorrhiza powder into a container, adding an ethyl lactate solution, mixing, oscillating and shaking uniformly, then carrying out ultrasonic treatment and centrifugation, and taking supernate, so as to obtain a mixed solution of tanshinone IIA and salvianolic acid B; according to the ultrasonic-assisted green solvent ethyl lactate extraction method obtained through optimization, tanshinone IIA and salvianolic acid B with large polarity difference in salvia miltiorrhiza can be extracted at the same time. The extraction method disclosed by the invention is simple in operation steps, and the yield of active ingredients and the utilization rate of raw materials are relatively ideal. The method has the advantages of being simple in process, safe, low in cost, environmentally friendly, convenient to operate, good in reproducibility, short in period, capable of avoiding degradation of effective components and the like.

The application belongs to the technical field of petroleum fracturing proppant preparation, and particularly relates to a preparation method of an in-situ self-grown core-shell structure double-repellent micro-nano proppant double-emulsion fracturing fluid. The application uses sodium silicate, a silane coupling agent and ethyl lactate as proppant core material precursor materials, uses a thermosetting resin as a proppant shell layer precursor material, and uses double-repellent modification materials and a drag-reducing agent as precursor materials of the double-repellent surface, so that the cost is reduced, and the strength of the proppant and the flow permeation and drag reduction capacity thereof are improved.

The invention relates to the technical field of perfume synthesis, in particular to an efficient hydrolysis process in perfume synthesis, which comprises the following steps: mixing ethyl lactate, ethyl 3-chloropropionate and ethanol, and reacting under the conditions of metal sodium and heating reflux; after the reaction is finished, distilling off the ethanol under reduced pressure, neutralizing the residual reaction liquid with dilute sulphuric acid, extracting with an organic solvent, separating the liquid to obtain an organic phase, and concentrating the organic phase under reduced pressure to obtain a 2-methyl-4-methyl ester tetrahydrofuran-3-ketone crude product; the method comprises the following steps: heating a 2-methyl-4-methyl ester tetrahydrofuran-3-ketone crude product under the catalysis of cationic resin to hydrolyze, filtering out the cationic resin, extracting with an organic solvent, separating liquid to obtain an organic phase, concentrating under reduced pressure, and rectifying to obtain breadone. According to the method for synthesizing breadone, use of a large amount of acid water is avoided, output of a large amount of waste acid is avoided, the process is more environmentally friendly, meanwhile, the yield is high, the steps are simple, and the industrial production prospect is wide.

The invention relates to chilli sauce flavor essence as well as a preparation method and application thereof. The essence is prepared from the following raw material components: acetic acid, dimethyl disulfide, ethyl lactate, diallyl disulfide, diallyl trisulfide, allyl methyl disulfide, dimethyl trisulfide, 2-methylbutyric acid, alpha-terpilenol, phenethyl alcohol, phenylpropanol, ethyl caprate, fenugreek lactone, 2-methyl-2-pentenoic acid, linalool, hexanal, eugenol and ethyl caprylate. The chilli sauce is prepared from ethyl maltol, methyl cyclopentenolone, capsicum oleoresin, a chilli sauce Maillard reactant and caprylic capric triglyceride. The chilli sauce flavor essence prepared by the invention not only has the flavor characteristic of chilli sauce, but also has the taste of chilli sauce, and is full and pure in fragrance, high in simulation degree and stable in quality.

The application provides a positive photoresist composition, which comprises a phenolic resin, a photosensitive compound and a mixed solvent, wherein the mixed solvent comprises a first solvent and a second solvent, the first solvent is selected from at least one of ethyl lactate, ethyl 3-ethoxypropionate, 4-methyl-2-pentanone and 2-heptanone; and the second solvent is selected from at least one of ethylene glycol monomethyl ether, propylene glycol monomethyl ether, diethylene glycol monomethyl ether, diethylene glycol dimethyl ether, propylene glycol methyl ether acetate, ethyl acetate and n-butyl acetate. The photoresist composition provided by the application has better stability than a photoresist composition using a single solvent, and can be better applied to an organic electroluminescent display.

The invention belongs to the technical field of chemical processes, and particularly relates to a method for continuously synthesizing pyruvic acid through catalytic oxidation of ethyl lactate and coupled reaction rectification. According to the method, ethyl lactate and hydrogen peroxide are used as raw materials, a titanium silicalite molecular sieve is used as a catalyst, pyridine-2-formic acid is added as an auxiliary agent, ethyl pyruvate is synthesized in a tubular reactor filled with the catalyst, then under the condition of reduced pressure, pyruvate is hydrolyzed through a continuous reactive distillation tower, and a pyruvic acid water solution is obtained at the tower bottom. According to the invention, a tubular reactor model is adopted, the side reaction of hydrogen peroxide caused by backmixing of kettle reaction is solved, meanwhile, pyridine-2-formic acid is added as an auxiliary agent, the invalid decomposition of hydrogen peroxide in the catalytic oxidation process is solved, and the utilization rate of hydrogen peroxide is improved. Reaction rectification is coupled in the ethyl pyruvate hydrolysis process, continuous hydrolysis of ethyl pyruvate is achieved, a reaction section is filled with styrene resin with sulfonic acid groups to catalyze hydrolysis of ester, the reaction rate is increased from the thermodynamic angle, ethyl alcohol is promoted to be moved out of a system in the decompression hydrolysis kinetics, the reaction time is greatly shortened, and the yield is increased. And high-efficiency, continuous and green synthesis of pyruvic acid is realized.

The invention discloses an epoxy grafted acrylate resin emulsion, a preparation method and a cathode electrophoretic coating prepared from the epoxy grafted acrylate resin emulsion, the epoxy grafted acrylate resin emulsion is prepared from the following raw materials in parts by weight: 75-85 parts of epoxy resin, 7-9 parts of methyl methacrylate, 3-5 parts of butyl acrylate, 3-4 parts of styrene, 3-4 parts of ethyl lactate and 1.5-2.5 parts of acrylamide. The adhesive is prepared from the following components in parts by weight: 4-6 parts of glycidyl methacrylate, 45-55 parts of a solvent, 1.2-1.8 parts of an initiator, 20-25 parts of diethanol amine, 35-40 parts of a closed isocyanate curing agent, 9.5-11.5 parts of a neutralizer and 180 parts of deionized water. The cathode electrophoretic coating is prepared from epoxy grafted acrylate resin emulsion and black antistatic characteristic color paste according to the weight ratio of 4: 1. The surface layer of the paint film is not easy to adsorb dust, and the paint film has self-cleaning capability.

An insect repellent composition for animals is disclosed. The insect repellent composition includes plant-based active ingredients and inert ingredients. The active ingredients include geraniol, clove oil, peppermint oil, and rosemary oil. The inert ingredients include mineral oil, isopropyl myristate, isopropyl alcohol, oleic acid, lauric acid, triethyl citrate, ethyl lactate, and vanillin.

The invention discloses a method for detecting tea saponin in tea seed meal, and relates to the technical field of quantum detection.The method comprises the steps that a tea seed meal raw material is subjected to degreasing treatment through a cosolvent of supercritical carbon dioxide and ethyl lactate, and degreased dry powder is obtained; constructing a variable component sub-tensor network, inputting the spectral signal data into the variable component sub-tensor network for analysis, and outputting a tea saponin characteristic peak intensity value through frequency band sensitive layered tensor decomposition in combination with predefined frequency band segmentation and a fixed rank compression strategy; and establishing a two-channel calibration curve according to the tea saponin characteristic peak intensity value and a tea saponin standard substance, and calculating a quantitative detection result of the tea saponin in the tea seed meal. According to the method, a frequency band sensitive layered tensor decomposition mechanism is constructed, a variable component sub-tensor network analyzes a spectral signal into a frequency band quantum state set, nonlinear compression is realized by using a frequency band entanglement Hamiltonian, and the signal-to-noise ratio of a characteristic peak is enhanced.

The invention discloses a preparation method and application of a super-hydrophobic anticorrosive coating, and relates to the technical field of engineering coatings. The preparation method comprises the following steps: sequentially adding epoxy-organic hybrid resin, a fluorinated polyurethane prepolymer, a functional filler, flaky stainless steel powder, modified graphene quantum dots, magnesium-aluminum hydrotalcite, a KH-560 silane coupling agent, oleophylic fumed silica, an organic silicon leveling agent, modified polydimethylsiloxane and ethyl lactate into a reaction kettle, and stirring to obtain a mixed coating; and standing and curing the mixed coating in a sealed manner to obtain the super-hydrophobic anticorrosive coating. The super-hydrophobic anticorrosive paint prepared by the preparation method disclosed by the invention has good mechanical property, corrosion resistance, durability, super-hydrophobicity and self-repairing characteristic.

The application discloses a water-soluble morpholine lactic amide acrylate bio-based monomer and a polymer thereof, and belongs to the technical field of bio-based polymers.The application uses a lactic acid derived green solvent (methyl lactate, ethyl lactate, propyl lactate, butyl lactate and the like) and morpholine to synthesize morpholine lactic amide ester (MML) through amine ester exchange under solvent-free mild conditions, then synthesizes a polymerizable morpholine lactic amide acrylate monomer (MMLA) through acylation reaction and tests the performance through various means.The research finds that the water-soluble bio-based monomer (MMLA) of the morpholine lactic amide acrylate developed by the application has lower toxicity than traditional acrylate monomers and can be polymerized in a more environmentally friendly system, and the water-soluble polymer obtained after polymerization has high glass transition temperature and good thermal stability, and the water-soluble polymer with lower biological toxicity and good stability has application prospects in the development of biomedical fields.

The invention provides application of an ethyl lactate solution in separation and recovery of a decommissioned photovoltaic module and a dissociation and recovery method of the decommissioned photovoltaic module, and belongs to the technical field of photovoltaic module recovery. The invention provides a green solvent and pyrolysis combined dissociation and recovery method for an out-of-service photovoltaic module. An aluminum outer frame, a junction box and glass of the out-of-service photovoltaic module are dismantled through a dismantling process; performing layered dissociation on the residual photovoltaic laminated structure by adopting an ethyl lactate solution, separating the back plate and removing an aged and damaged fluorine film on the outermost layer of the back plate on the premise of not damaging a core structure to obtain a semi-finished product of the back plate; and the battery piece and the EVA adhesive layer adhered to the battery piece are subjected to heat treatment in the presence of calcium oxide, so that the separation of the battery piece and the EVA adhesive layer and the enrichment of the calcium-containing mixed material are realized, and the pure battery piece is obtained. The recycling efficiency of the photovoltaic module is remarkably improved, the energy consumption is reduced, the environmental pollution is reduced, and a new thought is provided for resource recycling of the photovoltaic module.

The utility model belongs to the technical field of chemical production, and particularly relates to a recyclable enzymic method catalytic ethyl lactate fixed bed reactor which comprises an outer box body, inner box bodies, an upper sealing block, an access pipe and a discharge pipe, a lower sealing block is arranged below the upper sealing block, and the inner walls of the two inner box bodies are respectively connected with an upper sliding plate and a lower sliding plate in a sliding mode. The upper sliding plate and the lower sliding plate are provided with receding holes matched with the upper sealing block and the lower sealing block, and an inner connecting ring is installed on the inner box body. When the fixed bed is replaced, the catalytic operation of ethyl lactate does not need to be interrupted, and when the fixed bed between the outer box body and the inner box body needs to be replaced, the sealing column seals the sealing hole under the pushing of the fixing ring, the rotating sleeve is rotated to block the material flow direction, and the lower threaded ring can be separated for replacement; when the fixed bed in the inner box body is replaced, the upper sliding plate and the lower sliding plate are pushed to separate the inner cavity of the inner box body, the rotating sleeve is rotated to isolate the cavity, and the connecting rod and the lower sliding plate are separated.

The present application relates to the technical field of organic synthesis, in particular to a synthesis process of piroctone olamine for dandruff removal. The process comprises: in a mixed solvent of ethyl lactate, propylene carbonate and water, 4-methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-one is reacted with aqueous hydroxylamine in the presence of immobilized bifunctional phase transfer catalytic resin and potassium carbonate, hydroxylamine is added by A and B two parts of staged temperature control, and pH is accurately adjusted to 7-8; after reaction, the catalyst and impurities are separated by grading filtration, the filtrate is purified by seed-induced crystallization and activated carbon decolorization recrystallization. The product of the process has a purity of more than 99%, the related substances are less than 0.5%, the platinum-cobalt color is less than 20 Hazen, the crystal particle size is uniform, the suspension stability in shampoo is good, and the catalyst can be recycled and is environmentally friendly.

The invention discloses synchronous degradation type gravure ink for a degradable plastic film and a preparation method of the synchronous degradation type gravure ink, and relates to the field of environment-friendly ink. Comprising the following components: 35-55 parts of biocompatible binder resin, 12-18 parts of an organic pigment, 30-40 parts of a bio-based solvent, 0.5-1.5 parts of nano titanium dioxide and 1-2 parts of a dispersant, the biocompatible binder resin is a PLA, PCL and PBAT ternary block copolymer, the molecular weight of PBAT is 3000-5000 g / mol, the bio-based solvent is a composite solvent of ethyl lactate and gamma-valerolactone, and the dispersing agent is a nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide nano titanium dioxide. The mass ratio of the ethyl lactate to the gamma-valerolactone is 1: (0.5-2). The ink prepared by the invention has excellent adhesive force, keeps complete performance along with bending and stretching of a base material, and is free of sedimentation and stable in viscosity after being stored for 30 days; compared with the prior art, the printing ink disclosed by the invention has the advantages that the glossiness can reach 85%, and meanwhile, the printing ink shows highly synchronous degradation behaviors on PLA (Polylactic Acid) and PBAT (Poly (Butyleneadipate-co-Terephthalate)) base materials at 30-day and 60-day test points.

The invention relates to the technical field of medicines, and particularly discloses compound lidocaine cream as well as a preparation method and application thereof. The invention provides compound lidocaine emulsifiable paste. The compound lidocaine emulsifiable paste is specifically prepared from the following components in parts by weight: 22 to 26 parts of lidocaine, 22 to 26 parts of prilocaine, 13 to 17 parts of solubilizer, 9 to 11 parts of carbomer, 3 to 5 parts of sodium hydroxide and 0.02 to 0.06 part of penetration enhancer, the total amount is 1000 parts. The solubilizer is formed by mixing polyoxyethylene hydrogenated castor oil and poloxamer 188 in a weight ratio of (10-15): (1-4); the penetration enhancer is prepared by mixing L-ethyl lactate and oleic acid in a weight ratio of (1-4): (0.2-1). The compound lidocaine emulsifiable paste prepared by the invention has good safety, and the compound lidocaine emulsifiable paste has the effects of quicker effect taking, deeper anesthetic effect and longer duration time.

Janus dry facial mask based on birch emulsion electrospinning and its preparation method belong to the field of beauty and skin care materials technology. This invention first utilizes green bio-based solvents ethyl lactate or methyl lactate to optimize the extraction of betulinol from birch bark using an ultrasound-assisted method. Then, employing emulsion electrospinning technology and a Janus bilayer structure design, an asymmetric bilayer dry facial mask is constructed: the hydrophobic layer is made of biodegradable polylactic acid electrospinned, acting as a water-locking barrier to delay moisture loss; the hydrophilic layer is made by uniformly dispersing birch bark ethyl lactate extract (oil phase) in a mixed aqueous solution of polyvinyl alcohol and chitosan through high-speed shear emulsification to form a stable O / W type emulsion, followed by electrospinning to create a nanofiber membrane encapsulating active ingredients. The Janus dry facial mask exhibits excellent moisturizing, antioxidant, and anti-inflammatory effects, and requires no preservatives for dry storage and transportation. The process is simple and suitable for industrial production.