80 results about "Monomethyl ether" patented technology

The invention discloses a colchicine external preparation with high intradermal residual quantity and percutaneous transmittance as well as a preparation method and application thereof, and belongs to the technical field of pharmaceutical preparations. The invention provides a colchicine external preparation with high intradermal residue and transdermal transmittance. The colchicine external preparation comprises: a) colchicine or a pharmaceutically acceptable salt thereof; b) a penetration enhancer; c) pharmaceutically acceptable excipients and / or excipients; the penetration enhancer is at least one of polyglycerol oleate or isosorbide dimethyl ether. The drug loading capacity and the percutaneous transmittance of the colchicine external preparation disclosed by the invention are remarkably improved. When polyglycerol oleate is selected as a penetration enhancer to prepare colchicine gel, the intradermal retention volume can reach 358.08 micrograms within 20 hours. When isosorbide monomethyl ether is selected as a penetration enhancer to prepare ethosome gel, the accumulated penetration amount can reach 106.87 mu g / cm < 2 >, and the intradermal residual amount can reach 90.58 mu g or above.

The invention relates to the field of Karstedt catalysts, and discloses a stable-structure Karstedt catalyst for silane modified polyether synthesis, and the stable-structure Karstedt catalyst is prepared from the following raw materials in parts by weight: 2-4 parts of a Karstedt catalyst, 5-8 parts of a polyether siloxane block copolymer, 1-3 parts of nano silicon dioxide, 0.5-1.5 parts of triphenylphosphine, 20-25 parts of propylene glycol monomethyl ether and 0.5-1.0 part of an organosiloxane coupling agent. A polyether siloxane block copolymer is introduced into a Karstedt Catalyst system, and a flexible coating layer is formed outside a catalytic center by utilizing molecular compatibility of a silicon-oxygen chain segment of the polyether siloxane block copolymer and a platinum ligand, so that the exposure degree of the platinum center is remarkably reduced, interference of moisture and polar impurities in air is effectively inhibited, and the catalytic activity of the catalyst is improved. Therefore, the oxidation resistance and the storage stability of the catalyst are improved.

The application discloses a super-long chain (carbon atom number in a hydrophobic tail chain is greater than or equal to 18) polyoxyethylene ether surfactant thickened aircraft deicing and anti-icing liquid and a preparation method. The super-long chain polyoxyethylene ether surfactant thickened aircraft deicing and anti-icing liquid comprises the following components and mass percentages: alcohol 40-69%, deionized water 30-59%, and surfactant 0.2-2.0%, wherein the surfactant is a polyoxyethylene monomethyl ether ester of docosanoic acid (C 22 -350) with the following structural formula: The application obtains a deicing and anti-icing liquid which is good in deicing and anti-icing performance and relatively environment-friendly, solves the problems that a polymer-based deicing and anti-icing liquid is easy to be rehydrated to form a hydrated gel on the surface of an aircraft and that a surfactant itself or other additives cause corrosion on the surface of the aircraft under the premise of ensuring the deicing and anti-icing effect.

To provide an inkjet ink that can be adjusted to an appropriate viscosity range and has excellent properties such as continuous and intermittent printing capabilities. [Solution] An inkjet ink is provided comprising a solvent containing a first solvent which is a glycol ether and a second solvent which is an alcohol having C1 to C3 carbon atoms, and a polyvinyl acetal resin, wherein the ratio of the second solvent to the total amount of the solvent is 5% by mass or more and 50% by mass or less. The first solvent may be propylene glycol monomethyl ether.

The present application provides a negative electrode binder and a preparation method thereof and an application thereof. Raw materials for preparing the negative electrode binder include a soft monomer, a hard monomer, a urethane bond-containing acrylate monomer, an emulsifier, an initiator and water; and the urethane bond-containing acrylate monomer is prepared by a reaction of a small molecule diol monomethyl ether and a diisocyanate, and followed by end-capping with an acrylate containing a terminal hydroxyl group. The negative electrode binder has characteristics such as high bonding performance, good flexibility, resistance to electrolyte swelling and high temperature stability.

The application discloses a tetravalent platinum ester alkyne complex, a degradable high polymer, a nanomicelle and a preparation method and application thereof; the structural formula of the tetravalent platinum ester alkyne complex is shown as formula (I); the preparation method of the degradable high polymer is as follows: the tetravalent platinum ester alkyne complex is prepared first; then the obtained tetravalent platinum ester alkyne complex and diamine and monomethyl ether polyethylene glycol mPEG-NH2 are clicked to obtain a triblock high polymer. The nanomicelle of the degradable high polymer is also disclosed. The tetravalent platinum ester alkyne complex disclosed by the application can specifically respond to reducing substances in a tumor microenvironment, and the enamine ester structure generated by the reaction of the tetravalent platinum ester alkyne complex with diamine also has the property of responding to an acidic environment; the high polymer has mild and simple preparation conditions, the molecular weight can reach 35200, and the platinum drug loading capacity is as high as 33.91%; the nanomicelle can efficiently degrade and release anticancer active drugs in the tumor microenvironment, and has high antitumor activity and low cytotoxicity.

The invention belongs to the technical field of sponges, and particularly relates to an antiviral sponge which comprises the following components in parts by weight: 100 parts of polyether polyol and polymer polyol, 30 to 43 parts of toluene diisocynate; 0.6 to 1.0 part of soft foam silicone oil; 0.3 to 0.6 part of an amine catalyst; 0.1 to 0.3 part of a tin catalyst; 2 to 3.3 parts of water; 2.5 to 3.5 parts of an antiviral agent; the antitoxic agent is a mixture of dimethyl tetradecyl [3-(trimethoxysilyl) propyl] ammonium chloride and triethylene glycol monomethyl ether. Compared with the prior art, the sponge material with excellent performance is designed, the polyether polyol, the polymer polyol and the toluene diisocynate are used as main forming components of the sponge material, and the used antiviral component belongs to organosilicon quaternary ammonium salt, so that the antiviral effect can be achieved; the prepared sponge material is comfortable and soft, has good elasticity, also has a strong antiviral effect, has no stimulation to human skin and no carcinogenic risk, and is suitable for medical supplies, hygienic materials and other scenes with high safety requirements.

The invention provides a preparation method of octadiene monomethyl ether and a used catalyst, the catalyst comprises a palladium-containing compound and a ligand, the ligand has a structure as shown in a formula I, substituent groups R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14 and R15 are independently selected from fluorine, methyl and hydrogen, and at least one substituent group is fluorine. According to the invention, the F atom is introduced to the substituent outside the ring of the ligand, so that the electron withdrawing capability of the ligand is enhanced, the catalytic activity of the catalyst is improved, and the requirements on reaction conditions are reduced. In addition, by introducing F atoms, the steric hindrance effect of the ligand is enhanced, and the selectivity of the catalyst can be improved.

This propylene glycol monomethyl ether acetate composition contains propylene glycol 1-monomethyl ether 2-acetate, and has an absorbance of 0.030 or less at 259 nm as measured after the propylene glycol monomethyl ether acetate composition has been submitted to the following test. (Test) The propylene glycol monomethyl ether acetate composition is heated to 80°C in a container made of borosilicate glass in a nitrogen atmosphere, and kept in that condition for 275 hours.

The invention relates to the technical field of coatings, and aims to provide a preparation method and a use method of a neodymium-iron-boron magnet water-based anticorrosive coating. Comprising the following steps: mixing bisphenol A epoxy resin, n-butyl alcohol and ethylene glycol monobutyl ether, and mixing methacrylic acid, butyl acrylate, styrene and an initiator; mixing the two mixed solutions drop by drop, and reacting to obtain water-based acrylic acid modified epoxy resin; the preparation method comprises the following steps: uniformly mixing organic siloxane, deionized water and propylene glycol monomethyl ether, and reacting to obtain water-based silica sol; uniformly mixing the water-based acrylic modified epoxy resin, the water-based silica sol, the ether solvent, the ultra-fine filler, the curing agent, the carbon black color paste and the deionized water, adding the deionized water, uniformly stirring, and filtering to obtain the water-based anticorrosive coating. The product is high in environmental protection property and small in influence on the environment; the method is simple and efficient to use, easy to operate, low in energy consumption requirement and suitable for large-scale industrial production; and the compactness and the corrosion medium infiltration resistance of the coating are remarkably improved, and the coating has excellent corrosion resistance.

The present application relates to the field of epichlorohydrin wastewater treatment, and discloses a method for recovering organic matter from epichlorohydrin wastewater. The method comprises the following steps: introducing the epichlorohydrin wastewater into a pretreater for neutralization treatment to obtain neutralized wastewater, wherein the pH of the neutralized wastewater is 5-10; introducing the neutralized wastewater into a dehydration concentration tower, and using the overhead pressurized gas phase as a heat source of the dehydration concentration tower to perform dehydration evaporation treatment on the neutralized wastewater to obtain concentrated wastewater; introducing the concentrated wastewater into a deheavy evaporator for deheavy evaporation treatment to obtain salt-containing waste liquid and deheavy evaporator gas phase; introducing the deheavy evaporator gas phase into a dehydration tower for dehydration treatment to obtain organic matter containing glycerol monomethyl ether and glycerol and effluent wastewater; and introducing the organic matter containing glycerol monomethyl ether and glycerol into a product tower for separation treatment to obtain glycerol monomethyl ether and glycerol. The method can realize the recovery of organic matter in epichlorohydrin wastewater, and obtain glycerol monomethyl ether and glycerol.

The present application relates to a kind of continuous catalytic rectification ester exchange production propylene glycol monomethyl ether acetate processes, including PO catalytic rectification tower, PM catalytic rectification tower, MeOAc recovery tower, PMA refining tower, PO catalytic rectification tower is generated using PO and methanol reaction PM;PM is sent into PM catalytic rectification tower and occurs ester exchange reaction with MeOAc, and PMA is generated;The MeOAc, MeOH mixture obtained from PM catalytic rectification tower top is sent into MeOAc recovery tower and is separated, and the MeOAC and MeOH azeotrope of recovery tower top is recycled to PO catalytic rectification tower and is fully utilized MeOH, and the MeOAc of column bottom is recycled to PM catalytic rectification tower and participates in reaction;PMA refining tower separates the PMA obtained from PM catalytic rectification tower bottom and a small amount of PM, and the PM of refining tower top is recycled to PM catalytic rectification tower, and the PMA product of column bottom is obtained with high purity.Process operation is simple, process conversion rate and selectivity are high, catalyst can be recycled, post-treatment separation is simple, and have good industrial application prospect.

The present invention provides a carbon dispersion liquid that is useful as a material for forming conductive coating films, which has low viscosity even when containing high concentrations of conductive carbon black, in which the conductive carbon black is finely dispersed in an organic solvent in a good state, and in which the good dispersion state can be maintained over a long period of time. [Solution] This is a carbon dispersion liquid used to form a conductive coating film. It contains conductive carbon black, an organic solvent, a polymeric dispersant, and a phthalocyanine compound, wherein the polymeric dispersant is a polymer having a constituent unit (A) derived from a macromonomer (A) in which a (meth)acryloyloxy group is bonded to one end of a polyalkylene glycol monomethyl ether chain via a urea bond, a constituent unit (B) derived from an aromatic vinyl monomer (B), and a constituent unit (C) derived from a nitrogen-containing monomer (C), and the phthalocyanine compound is sulfonated copper phthalocyanine.

The application discloses a kind of halogen-free high-frequency copper-clad plate and its manufacturing method, belong to copper-clad plate preparation technical field, manufacturing method is as follows: fluorine-containing mercaptan grafting polybutadiene, styrene-butadiene-styrene copolymer, dicyclopentadiene phenol epoxy resin, toluene, butanone, propylene glycol monomethyl ether are added into mixing machine, after stirring and mixing, initiator, active ester curing agent, diamond-based flame-retardant filler are added, stirring and mixing 2-4h, obtain resin glue liquid;Glass cloth is placed in resin glue liquid and immersed after taking out, baking, obtain prepreg;Prepreg is laminated, the copper-clad plate obtained by the application has lower dielectric constant, better flame-retardant property, higher heat dissipation performance, lower water absorption and good mechanical processing, etc.Advantages, in the field of communication, vehicle-mounted millimeter wave radar, internet of things, automobile electronics and other fields of high multilayer high-frequency circuit board have broad application prospect.

This invention provides an absorbent for capturing carbon dioxide and a method for capturing carbon dioxide. By volume percentage, the absorbent comprises 20-60% glycine salt aqueous solution, 10-50% triethylene glycol monomethyl ether, 5-10% ethylene glycol, and the balance being water. This absorbent combines the advantages of glycine salt systems, such as low volatility, non-toxicity, safety, and better antioxidant degradation resistance, while avoiding the risk of solid precipitates forming after absorption by the glycine salt system, which could cause pipeline blockage.

The invention discloses a quaternary ammonium salt type pyrrolidine polyoxyethylene ether composition and a preparation method thereof, and relates to the technical field of polyoxyethylene ether materials. The quaternary ammonium salt type pyrrolidine polyoxyethylene ether composition is prepared from the following raw materials in parts by weight: 20 to 30 parts of quaternary ammonium salt type pyrrolidine polyoxyethylene ether, 0.5 to 1 part of antioxidant and 25 to 35 parts of deionized water. According to the invention, cyanuric chloride and amino decaglycol monomethyl ether react to generate a monosubstituted compound, and the monosubstituted compound and 3, 5-di-tert-butyl-4-hydroxybenzylamine react to generate the antioxidant. The quaternary ammonium salt type pyrrolidine polyoxyethylene ether composition prepared by the invention has good surface tension and oxidation resistance.

The invention discloses a building exterior wall coating and a preparation method thereof, and relates to the technical field of coatings. When the building exterior wall coating is prepared, an azo intermediate, iron powder and hydrochloric acid react to prepare a benzotriazole monomer; carrying out a reaction on the secondary substituted cyanuric chloride and 4-pentene-1-amine to prepare a modified cyanuric chloride monomer; carrying out reaction on the polyurethane prepolymer and phosphorus-containing diamine to prepare a phosphorus-containing curing agent; ethyl acrylate, acrylic acid [2-(oxirane-2-yl) ethyl] ester, a benzotriazole monomer, a modified cyanuric chloride monomer, azodiisobutyronitrile and propylene glycol monomethyl ether acetate are subjected to a reaction, and an acrylic resin solution is prepared; the acrylic resin solution, a dispersing agent, a defoaming agent, silicon dioxide, calcined stone, a wetting agent, a flatting agent, a thickening agent and a phosphorus-containing curing agent are subjected to pulping and paint mixing, and the building exterior wall coating is prepared. The building exterior wall coating prepared by the invention has excellent flame-retardant, hydrophobic and anti-aging properties.

The application relates to the technical field of plant invasion prevention, and discloses application of aikenol monomethyl ether in inhibition of growth of Mikania micrantha. The aikenol monomethyl ether is dissolved in dimethyl sulfoxide, and then a 1200 microgram / mL mother liquor is prepared by using purified water; 1.333 mL of the mother liquor with a concentration of 1200 microgram / mL is taken in a clean container, and purified water is added to make up to 40 mL, so that 40 mL of aikenol monomethyl ether solution with a concentration of 40 microgram / mL is obtained; the aikenol monomethyl ether solution is sprayed on Mikania micrantha plants with 4-6 leaves; purified water is sprayed as a control; and on the fifth day, the difference in plant height between the treatment group and the control group is obviously observed. Therefore, the aikenol monomethyl ether can be used for preparing a medicine for inhibiting the growth of Mikania micrantha, so that the growth of Mikania micrantha is inhibited.

The invention relates to the technical field of material science, and particularly discloses a crown ether-like phenoloxy potassium metal complex and a preparation method and application thereof.The preparation method comprises the steps that 2, 3-dihydroxy benzaldehyde is generated from o-vanillin under the action of BBr3; the method comprises the following steps: removing hydrogen on a phenolic hydroxyl group at a side position of 2, 3-dihydroxy benzaldehyde under the action of NaH, and reacting the intermediate with TsCl substituted polyethylene glycol monomethyl ether (III) to generate phenolic aldehyde with a long ether connection structure; the phenolic aldehyde and the substituted primary amine are subjected to Schiff base reaction condensation to generate a corresponding ligand; the obtained ligand reacts with a metal raw material compound of potassium in an organic medium, and then the crown ether-like imine phenoloxy potassium metal complex is collected from the reaction product. The method is convenient to prepare, stable in property, low in toxicity and high in conversion rate, high-molecular-weight polylactone is easy to obtain, the requirements of industrial departments can be met, and the method has wide application prospects.

A propylene glycol monomethyl ether acetate composition comprising propylene glycol 1-monomethyl ether 2-acetate, wherein the absorbance of the propylene glycol monomethyl ether acetate composition at 259 nm is less than 0.030 as determined by the following test: (Test) The propylene glycol monomethyl ether acetate composition is placed in a borosilicate glass container and heated to 80°C under a nitrogen atmosphere and maintained for 275 hours.

The invention belongs to the technical field of photoacid generators, and particularly relates to a fluorine-containing sulfonate photoacid generator and a synthesis method thereof, the fluorine-containing sulfonate photoacid generator has a structural formula shown in the specification, the solubility of the fluorine-containing sulfonate photoacid generator in propylene glycol monomethyl ether acetate is 2.5% (w / w), and the solubility of the fluorine-containing sulfonate photoacid generator in gamma-butyl lactone is 14.0% (w / w). The synthesis method comprises the following steps: firstly, carrying out Friedel-Crafts reaction, carbonyl protection, addition condensation, deprotection, salification and other reactions on anisole and 3, 3-dimethylbutyryl chloride serving as starting materials to obtain a cationic intermediate M3, then carrying out substitution sulfonation, reduction, carbonation and other reactions on ethyl bromofluoroacetate serving as a starting material to obtain an anionic intermediate M6; according to the synthesis method, the yield is high, the purity is 99% or above, the synthesis process is easy and convenient to operate, safe and environmentally friendly, the single-batch mass production reaches the kilogram level, and photoresist supply can be met.

The application discloses brake fluid for One-Box brake-by-wire system and a preparation method thereof, the brake fluid comprises triethylene glycol monomethyl ether borate, glycerol acid ester, triethylene glycol monobutyl ether, tetraethylene glycol monomethyl ether, diethylene glycol, anti-rust agent, antioxidant and pH value regulator. The brake fluid can reduce the friction coefficient to <=0.14 under the SRV test condition, the friction coefficient is reduced by 10% compared with that of traditional brake fluid, the abnormal sound and wear problem caused by poor lubrication of the brake system is effectively solved, and the reliability and safety of the brake system of the new energy vehicle are remarkably improved; in addition, the brake fluid also has low temperature kinetic viscosity (-40 DEG C) <=1000mm 2 / s, the pH value is controlled to be 7.5-8.0, and excellent corrosion prevention performance of the product is ensured.

The invention provides a water-based recovery liquid and a preparation method thereof, and a chlorine ion content testing method and device, and aims to solve the technical problem of how to accurately extract and quantify trace residual chlorine ions on the surface of a steel plate. The embodiment of the invention provides a water-based recovery liquid for extracting residual chloride ions on the surface of a steel plate. The water-based recovery liquid comprises the following components in percentage by mass: 20-40% of normal propyl alcohol; 10%-20% of propylene glycol monomethyl ether; 0.5%-2% of fatty alcohol-polyoxyethylene ether; and the balance of deionized water. And high-recovery-rate extraction of microgram-level chloride ions on the surface of the steel plate is realized through a triple synergistic mechanism of'similar dissolution-interface wetting-ionized water '.

A composite plasticizer, comprising a first plasticizer and a second plasticizer. The first plasticizer comprises at least one of a diol polymer and a diol polymer monomethyl ether. The diol polymer is HO-(CaH2aO)b-H. The diol polymer monomethyl ether is HO-(CaH2aO)b-CH3, wherein 2≤a≤6, and a weight-average molecular weight is 2,000-10,000. The second plasticizer has a molecular formula of R1-(CmH2mO)n-R2, wherein 2≤m≤6, 2≤m*n≤30, R1 is one of hydroxyl, alkoxy, or a carboxylate group, and R2 is one of hydrogen, alkyl, or alkyl carbonyl.

The invention relates to a method for removing chloropropylene glycol monomethyl ether in epichlorohydrin wastewater, which comprises the following steps: in a hydrogen atmosphere, contacting the epichlorohydrin wastewater with a hydrodechlorination catalyst to carry out hydrodechlorination reaction, so that the chloropropylene glycol monomethyl ether in the epichlorohydrin wastewater is converted into propylene glycol monomethyl ether, wherein the hydrodechlorination catalyst comprises an activated carbon carrier and an active metal component; the active metal component comprises Ru. According to the method, the chloropropylene glycol monomethyl ether in the epichlorohydrin wastewater can be efficiently removed, the propylene glycol monomethyl ether product with higher value is obtained, and the treatment cost of the chloropropylene glycol monomethyl ether is reduced.

The invention relates to the technical field of travertine ceramic tiles, and mainly relates to a travertine ceramic tile with skin-friendly touch and uniform glossiness and a preparation method thereof. The invention discloses a travertine ceramic tile with skin-friendly touch and uniform glossiness. The travertine ceramic tile comprises a travertine ceramic tile body and a hybrid coating, the hybrid coating is prepared from a hybrid coating; the hybrid coating comprises a component A and a component B, wherein the component A comprises modified polysiloxane resin, propylene glycol monomethyl ether, ethylene glycol monomethyl ether, silicone oil, a flatting agent, a defoaming agent and isopropanol; the component B comprises full-methylated amino resin, inorganic micro powder, a dispersing agent, an anti-settling agent, ethylene glycol butyl ether and a catalyst; the modified polysiloxane resin is prepared from tetraethoxysilane, methyltrimethoxysilane, dimethyldiethoxysilane, citric acid, a silane coupling agent, a solvent, formic acid and propylene glycol monomethyl ether; the inorganic micro powder comprises nano silicon dioxide micro powder. According to the invention, the hand feeling of the travertine ceramic tile can be effectively improved, and the travertine ceramic tile is endowed with more uniform gloss.

A propylene glycol monomethyl ether acetate composition containing propylene glycol 1-monomethyl ether 2-acetate, acetic acid, propionic acid, and water, wherein the content of the propionic acid is 2 ppm or more and 30 ppm or less with respect to 100 mass% of the propylene glycol monomethyl ether acetate composition, the sum of the contents of the acetic acid and the propionic acid is 5 ppm or more and 80 ppm or less with respect to 100 mass% of the propylene glycol monomethyl ether acetate composition, and the content of the water is 17 ppm or more and 250 ppm or less with respect to 100 mass% of the propylene glycol monomethyl ether acetate composition.

The invention discloses a two-component self-emulsifying polyester acrylic dispersion and a preparation method thereof, and relates to the field of waterborne polyurethane paints.The preparation method comprises the following steps that a half ester intermediate is prepared and reacts with ethylene carbonate, and a hydrophilic monomer with cyclic carbonate groups is obtained; dibasic acid and dihydric alcohol are subjected to polycondensation to obtain initial resin, propylene glycol monomethyl ether, a mixed solution a containing hydrophilic monomers and a mixed solution b are added into the initial resin at intervals, mixing is conducted, and functional resin is obtained; the functional resin and dimethylethanolamine are subjected to a stirring reaction, then deionized water is added, mixing is conducted, and a product with the D50 being 50-150 nm and the PDIlt is obtained; and 0.2 of a two-component self-emulsifying polyester acrylic acid dispersion. According to the preparation method disclosed by the invention, the hydrophilic monomer with a cyclic carbonate group is introduced during preparation, and a step-by-step controlled polycondensation and graft polymerization process is adopted, so that the hydrophilic monomer is directionally and uniformly anchored on a polyester main chain, and the problem of non-uniform molecular structure caused by random copolymerization of the hydrophilic monomer in a traditional method is avoided.

The application provides a method for separating and recovering sulfides in diesel oil, and relates to the technical field of diesel desulfurization. The method comprises the step of oxidizing desulfurization of diesel oil and an oxidizing agent under the action of a molybdenum-based catalyst. The molybdenum-based catalyst is prepared by heating and dissolving phosphomolybdic acid and triethylene glycol monomethyl ether as raw materials at 80-110 DEG C. The molar ratio of the phosphomolybdic acid and the triethylene glycol monomethyl ether is 1:3000. The method is simple. The liquid molybdenum-based catalyst obtained by heating and dissolving phosphomolybdic acid (PMA) and triethylene glycol monomethyl ether (TEGOCH3) as raw materials is used for oxidizing desulfurization. The dibenzothiophene sulfides can be efficiently removed in a short time. The diesel desulfurization efficiency and desulfurization rate are improved. The ultra-deep desulfurization of diesel oil and the efficient conversion and recovery of sulfides are realized.

This invention relates to a method and equipment for removing impurities from propylene glycol monomethyl ether acetate recovery solution that can remove acetic acid. The above technical solution employs a two-stage vacuum distillation process, and an alkaline ion exchange resin is installed in the distillation column. This effectively removes acetic acid from the propylene glycol monomethyl ether acetate recovery solution, preventing acetic acid from corroding equipment and generating metal ions. The purified propylene glycol monomethyl ether acetate solution has an acetic acid content ≤0.01% and a single metal ion content ≤1 ppb, meeting electronic-grade standards and allowing for recycling, thus saving raw material costs.