140 results about "Monomethyl ether" patented technology

The invention discloses an organic amine composite absorbent for carbon capture and application thereof, and belongs to the technical field of carbon dioxide capture, the organic amine composite absorbent for carbon capture is in a solution state and comprises the following components: a main agent, an auxiliary agent, an accelerant A, an accelerant B and water; wherein the mass ratio of the main agent to the auxiliary agent is 2: (1-2); the mass ratio of the auxiliary agent to the accelerant A is 2: (1-2); the mass ratio of the accelerant A to the accelerant B is 2: (1-2); the total mass concentration of the main agent, the auxiliary agent, the accelerant A and the accelerant B in the organic amine composite absorbent for carbon capture is 30-40 wt%; the main agent is selected from N-methyldiethanolamine or N, N-diethyl ethanolamine, the auxiliary agent is selected from piperazine or hydroxyethyl ethylenediamine, the accelerant A is selected from triethylene glycol monomethyl ether and / or ethylene glycol monomethyl ether, and the accelerant B is selected from ethyl butyl ether and / or isobutyl ether. The organic amine composite absorbent for carbon capture has a wide application prospect in removal of carbon dioxide in flue gas.

The invention discloses high-strength durable pervious concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from the following raw materials in parts by weight: 160 to 220 parts of cement, 1200 to 1600 parts of coarse aggregate, 170 to 230 parts of fine sand, 160 to 200 parts of water, 3 to 4.5 parts of polycarboxylate superplasticizer, 5 to 15 parts of silica fume, 1 to 3 parts of polypropylene fiber, 8 to 12 parts of modified nano cellulose and 5 to 7 parts of flexibilizer, wherein the flexibilizer comprises modified graphene oxide, propylene glycol monomethyl ether and polyisoprene rubber. The interface compatibility is enhanced through the modified nanocellulose, microcracks are reduced, the bonding strength of aggregate and cement is improved, and the compressive strength is improved; the toughening agent component endows the concrete with toughness and durability, the toughening agent component and the toughening agent component have a synergistic effect, and the concrete prepared by mixing the various raw materials has excellent mechanical properties and durability on the basis of good water permeability, and has a wide market application prospect.

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 nano-composite for tomato virus disease prevention and control and a whole growth period prevention and control method. The nano-composite comprises an emodin monomethyl ether aqueous solution and a nano-carrier hydrophilic lipophilic diblock polymer HLDP in a mass ratio of 1: (10-20). According to the nanocomposite for tomato virus disease prevention and control, HLDP is added into an emodin methyl ether aqueous solution, and the HLDP and the emodin methyl ether aqueous solution are spontaneously combined through a hydrogen bond and Van der Waals' force, so that the particle size of an emodin methyl ether medicament is remarkably reduced to nanoscale size, and the affinity of the emodin methyl ether medicament to water is increased; the dispersibility in an aqueous solution and the wetting effect of the medicament on leaves are improved; meanwhile, the nano-composite has certain improvement on prevention and treatment effects on tomato spotted wilf virus, and the prevention effect is improved by about 11% compared with that of a single emodin monomethyl ether commodity medicament; compared with daily management measures of a base, the whole-growth-period field control effect of field seed dressing, root dipping and foliage spraying is adopted, and the morbidity of virus diseases is smaller than 10%; the tomato yield increase is promoted.

To provide a photosensitive resin composition from which a light-shielding film having both low reflectivity and good developability can be obtained.SOLUTION: A photosensitive resin composition contains (A) an unsaturated group-containing alkali-soluble resin, (B) a photopolymerizable compound having at least two or more unsaturated bonds, (C) a photopolymerization initiator, (D) at least one light-shielding component selected from the group consisting of a black pigment and a mixed color pigment, (E) inorganic fine particles having a refractive index of 1.10 to 1.80, and (F) a solvent, wherein (F) the solvent contains a first solvent which is propylene glycol monomethyl ether acetate, and a second solvent (excluding propylene glycol monomethyl ether acetate) having ΔEST of 0.45 eV or more, and a content mass of the second solvent is 4.0% to 60.0% with respect to the total mass of (F) the solvent.SELECTED DRAWING: None

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.

The invention provides an environment-friendly water-based binder suitable for BJ additive manufacturing and a preparation method of the environment-friendly water-based binder. The water-based binder comprises the following components in percentage by weight: 10%-30% of propylene glycol monomethyl ether, 5%-10% of diethylene glycol, 1%-10% of polyethylene glycol, 0.1%-3% of nano SiO2 and the balance of deionized water. According to the invention, ethylene glycol monomethyl ether and diethylene glycol are adopted to construct a composite solvent system, the low volatility of propylene glycol monomethyl ether and the high wettability of diethylene glycol are utilized to construct a stable composite solvent system with appropriate solubility, and then polyethylene glycol PEG is used as a bonding enhancer to adjust the physical characteristics of the binder. The viscosity of the binder is controlled within a reasonable range, nano SiO2 is added as a rheology modifier and a modification component, the flowing property of a binder system is adjusted through a trace amount of nano SiO2, and the formula can be adjusted according to material types and printing environments and is suitable for various metal and ceramic printing systems.

It is an object of the present invention to provide a chemical solution that, when applied to an object to be treated, can suppress the occurrence of defects containing alkali metals and defects containing boron after the application to the object to be treated and that, when used as a washing solution for pipes, can suppress the occurrence of particle defects on the surface of a substrate supplied with a composition through the washed pipes. The chemical solution of the invention is a chemical solution containing propylene glycol monomethyl ether acetate and boron atoms. The content of propylene glycol monomethyl ether acetate is 80% by mass or more based on the total mass of the chemical solution, and the content of boron atoms is 0.001 to 100 ppt by mass based on the total mass of the chemical solution.

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.

It is an object of the invention to provide a treatment liquid that, when used as a developer or a rinsing liquid for a metal resist film, exhibits a high ability to suppress the occurrence of pattern defects and also exhibits a high pattern resolution. The treatment liquid of the invention is a treatment liquid containing propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, and acetic acid. The content of propylene glycol monomethyl ether acetate is 60% by mass or more based on the total mass of the treatment liquid, and the content of propylene glycol monomethyl ether is 0.00010 to 0.1% by mass based on the total mass of the treatment liquid. The content of acetic acid is 1.0% by mass or more and less than 40.0% by mass based on the total mass of the treatment liquid.

The invention discloses low-defect few-layer graphene water-based conductive paste and a preparation method and application thereof, and belongs to the technical field of conductive paste. The low-defect few-layer graphene water-based conductive paste comprises the following components in parts by weight: 1-3 parts by mass of low-defect few-layer graphene, 100 parts by mass of ultrapure water and 0.8-1.2 parts by mass of a conductive additive, the low-defect few-layer graphene is obtained by performing room-temperature intercalation on graphite powder, performing chemical expansion and performing water-phase stripping by adopting an aqueous solution of 5 '-adenine nucleotide salt, the conductive additive is amphiphilic polythiophene; the amphiphilic polythiophene is obtained by polymerizing 2, 5-dibromo-3-triethylene glycol monomethyl ether thiophene and 3-[10-(4-toluene ether) decyl] thiophene which are used as monomers and then treating by hydrogen bromide and anhydrous acetic anhydride; the low-defect few-layer graphene water-based conductive paste prepared by the invention has few graphene defects, good dispersity and excellent conductivity.

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.

Provided is a resin that exhibits high resist performance because a poorly soluble component with respect to a resist solvent is reduced, and a production method for the resin. Disclosed is a photoresist resin containing an acrylic resin, in which when the photoresist resin is dissolved in propylene glycol monomethyl ether acetate in such a way that a resin solid content concentration is 5 wt %, a polystyrene equivalent turbidity measured using a method described in “Drinking Water Testing Methods” of Japan Water Works Association of 2003, Ministry of Health, Labor and Welfare Ordinance No. 261 of Japan is 30 or less.

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.

This invention provides a method for constructing a characteristic spectrum of Pinus tabuliformis granules, the characteristic spectrum, and its application. The construction method includes the following steps: (1) preparing a test solution of Pinus tabuliformis granules; preparing a reference solution of Pinus tabuliformis reference material; and preparing a reference solution of pine syrup monomethyl ether reference standard; (2) performing ultra-high performance liquid chromatography (UHPLC) on the test solution, the reference solution of the reference material, and the reference solution of the reference standard, respectively, and obtaining the characteristic spectrum of the Pinus tabuliformis granules based on the detection. The characteristic spectrum constructed by the method provided by this invention enhances the specific identification of Pinus tabuliformis granules and can effectively identify the source of Pinus tabuliformis medicinal material, providing support for ensuring the single source of the medicinal material source of Pinus tabuliformis granules. The characteristic spectrum constructed by this invention can comprehensively reflect the characteristic peak information of the sample, and the method is stable, highly precise, and has good reproducibility.

To provide a water-based emulsion adhesive mainly composed of a vinyl acetate-based polymer exhibiting good adhesiveness to water-repellent paper.SOLUTION: There is provided a water-based emulsion adhesive which comprises 0.3 to 5.0 pts.mass of an acrylic polymer containing an amino group, 5 to 20 pts.mass of a polyvinyl alcohol and 10 to 30 pts.mass of a plasticizer selected from the group consisting of triacetin, a diethylene glycol butyl ether acetate, diethylene glycol monoethyl ether acetate, an ethylene glycol monobutyl ether acetate, 3-methoxybutyl acetate and a propylene glycol monomethyl ether acetate, based on 100 pts.mass of a vinyl acetate-based polymer containing no ethylene group as a structural unit.SELECTED DRAWING: None

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 relates to the field of brake fluid production equipment, in particular to brake fluid with high wear resistance and a reaction device of the brake fluid. The flame-retardant flame-retardant material is prepared from the following raw materials in parts by weight: 50 parts of triethylene glycol monomethyl ether borate, 20 parts of triethylene glycol monomethyl ether, 5 parts of tetraethylene glycol monomethyl ether, 10 parts of triethylene glycol ethyl ether, 0.05 part of benzotriazole, 0.05 part of methylbenzotriazole, 0.1 part of bisphenol A, 0.1 part of a base value reinforcing agent and 0.1 part of an improver, the total weight part of the triethylene glycol monomethyl ether borate, the triethylene glycol monomethyl ether, the tetraethylene glycol monomethyl ether and the triethylene glycol ethyl ether is 100; the brake fluid solves the technical problems that the existing brake fluid is insufficient in wear resistance and incomplete in filtering procedure in the production process, so that the granularity invisible to naked eyes exists in the brake fluid, and the ABS pump is easily blocked in the use process.