31 results about "Dimethyl ethanolamine" patented technology

The application belongs to the technical field of electrophoretic paint, and provides a polyurethane modified epoxy resin cathode electrophoretic paint and a preparation method thereof.The cathode electrophoretic paint comprises a cationic water-based resin emulsion, a blocked isocyanate crosslinking agent, a pigment paste, an additive and deionized water.The solid resin in the cationic water-based resin emulsion comprises polyurethane modified epoxy resin, the polyurethane modified epoxy resin comprises a bisphenol A type epoxy resin skeleton and polyurethane segments connected to the skeleton, the polyurethane segments contain tertiary amine groups introduced by N,N-dimethyl ethanolamine, and the tertiary amine groups are connected to the epoxy resin skeleton through urethane bonds formed by reaction of isocyanate groups with hydroxyl groups in the bisphenol A type epoxy resin skeleton.The application can reduce local enrichment of polyurethane soft segments and cationic hydrophilic groups in the deposited film, and reduce formation of low crosslinking density penetration channels in the cured paint film.

The invention discloses a two-phase carbon dioxide absorbent based on ionic liquid and application of the two-phase carbon dioxide absorbent. The two-phase carbon dioxide absorbent based on the ionic liquid is prepared from 9 to 21 parts of tetramethyl ammonium hydroxide glutamate, 14 to 21 parts of diethylenetriamine, 50 to 65 parts of N, N-dimethylethanolamine and 9 to 11 parts of water. According to the absorbent, the CO2 loading capacity is improved through the synergistic effect of an alkaline site of the ionic liquid and amine in the absorption stage, and an acid site of the ionic liquid serves as a built-in proton donor in the regeneration stage to promote decomposition of an absorption product, so that high absorption capacity and low regeneration energy consumption are synergistically achieved. The absorbent is high in COO absorption capacity, low in regeneration energy consumption, low in regeneration temperature and good in cycling stability, and an innovative solution is provided for solving the high-energy-consumption bottleneck of a traditional amine method carbon capture technology.

The invention discloses an anhydrous liquid-liquid phase change absorbent for carbon dioxide capture, and a preparation method and application thereof, and belongs to the technical field of carbon dioxide recovery. The invention relates to an anti-freezing agent which comprises the following components in percentage by weight: 20-30% of diglycolamine, 20-50% of dimethylethanolamine, 10-40% of dimethyl sulfoxide and the balance of a physical regulator. The anhydrous liquid-liquid phase change absorbent for capturing carbon dioxide in flue gas provided by the invention has the characteristics of high CO2 absorption capacity, short phase splitting time, high desorption rate and low CO2 rich phase viscosity after absorption, and the regeneration energy consumption of the absorbent can be greatly reduced. The optimal desorption temperature is 110 DEG C, the minimum regeneration energy consumption reaches 2.26 GJ / tCO2, the maximum desorption rate is 3.12 mmol CO2 kg <-1 > s <-1 >, the phase splitting time is 120-180 s, and the maximum CO2 absorption capacity can reach 3.23 mol / L.

The invention relates to the field of synthesis of hyperbranched polymers, and discloses a synthesis method of a flame-retardant hyperbranched polymer with a side group grafted with a P-N group, and the synthesis method comprises the following steps: dissolving phenyl dichlorophosphate and triethylamine in tetrahydrofuran, dropwise adding hydroxyethyl acrylate dissolved in tetrahydrofuran, carrying out a stirring reaction for 3 h, dropwise adding N, N-dimethylethanolamine dissolved in tetrahydrofuran, carrying out a stirring reaction for 2 h, and carrying out a reaction for 3 h; stirring and reacting for 3h; raising the temperature to 20 DEG C, continuously reacting for 10 hours, and ending the reaction; filtering the product in the previous step, extracting and separating liquid, and carrying out reduced pressure distillation to remove the solvent to obtain yellow viscous liquid DPHP; the preparation method comprises the following steps: dissolving DPHP and a catalyst Pd-diimine in dichloromethane, carrying out shading reaction for 24 hours under the ethylene pressure of 0.1 Mpa, and removing excessive solvent to obtain a product HBPE (at) PDPHP; then, the HBPE-coated PDPHP is added into a PI matrix, and through vertical combustion and limit oxygen index tests, it is found that the flame retardant effect of the PI composite material added with 10% of HBPE-coated PDPHP reaches the V-0 level. The preparation method is mild in preparation condition and environment-friendly, can be used as an additive to be added into engineering plastics for modification, and has the advantages of harmlessness, smoke suppression, environment friendliness and the like.

The invention relates to the technical field of waterborne polyurethane coatings, and discloses a two-component high-wear-resistance waterborne polyurethane coating for paper package surface protection and a preparation method thereof. The water-based paint comprises the following components in percentage by adding: 20% of water-based matte polyurethane, 30% of a water-based acrylic polymer, 45% of water-based bright polyurethane, 0.5% of dimethylethanolamine, 0.3% of a water-based organic silicon defoaming agent, 1.5% of pasty ultra-high molecular weight polydimethylsiloxane dispersion liquid, 0.2% of a water-based organic silicon flatting agent, 2% of dipropylene glycol butyl ether, 0.2% of an organic tin drier and 0.2% of a Digao TEGO WET 270 base material wetting agent. And 0.4% of a polyether polyurethane associated rheological additive with 25% of active parts. The problems that a traditional paper package surface protection technology is long in degradation period, poor in environmental protection property and low in quality are effectively solved.

The invention relates to a catalytic synthesis method of N, N-dimethylethanolamine. The method comprises the following steps: preparing reaction raw materials ethanolamine, methanol and a ruthenium / carbon catalyst in proportion; the method comprises the following steps: adding raw materials ethanolamine, methanol and a ruthenium / carbon catalyst into a high-pressure reaction kettle; replacing air in the reaction kettle with nitrogen for three times, starting stirring, mixing and heating reactants, and carrying out heat preservation reaction; after the reaction is finished, cooling the reaction kettle, and exhausting; opening the reaction kettle, filtering the reaction mixture, and recovering the solid catalyst; and distilling the filtrate at normal pressure to recover excessive methanol, then carrying out reduced pressure distillation, and collecting corresponding fractions to obtain N, N-dimethylethanolamine. The method has the advantages that the N, N-dimethylethanolamine is prepared through the reaction of ethanolamine and methanol under the catalytic action of the ruthenium / carbon catalyst, the catalytic reaction activity is high, the selectivity is good, the reaction condition is mild, the yield is high, the catalyst can be recycled and reused, the method is environmentally friendly, and the production cost is reduced.

The present relates to the use of a tertiary amine selected from N-methyl diethanolamine (CAS 105-59-9), N-ethyl diethanolamine (CAS 139-87-7), N-propyl diethanolamine (CAS 6735-35-9), N-butyldiethanolamine (CAS 102-79-4), N-t-butyl diethanolamine (CAS 2160-93-2), dimethyl ethanolamine (CAS 108-01-0), diethyl ethanolamine (CAS 5 100-37-8), dipropylaminoethanol (CAS 3238-75-3), diisopropylethanolamine (CAS 96-80-0), or dibutylethanolamine (CAS 102-81-8), and / or N-(3-Aminopropyl) diethanolamine (APDEA) and / or 2,2′-(octylimino)bisethanol as biocide, wherein the biocide is an anti-microbial agent such as one or more of: bactericide, fungicide, sporicide, algaecide, antiviral, microbially stabilizing agent, including any combination thereof. Also disclosed are additives, compositions and products with said tertiary amines and methods for providing biocidal effect and microbial stability to various products.

The present application relates to a kind of high-brightness high-fine feeling water-based automobile silver powder paint and its preparation method and application.The water-based automobile silver powder paint provided by the present application includes, by weight percentage, acrylic modified polyurethane dispersion, silicone-polyurethane-acrylate ternary copolymer emulsion, amino resin, acetylenic diol surfactant, thickening agent, ultra-fine nano barium sulfate paste, silicon-coated aluminum silver paste, dispersant A, leveling agent, defoaming agent, N,N-dimethyl ethanolamine, ethylene glycol butyl ether, propylene glycol butyl ether, ethylene glycol iso-octyl ether and deionized water.The present application significantly improves the arrangement effect of water-based automobile silver powder paint silver powder, so that it has high stability, high brightness and high fineness at the same time, and can meet the basic performance of automobile original factory paint film.

The invention discloses a primer for a digital ink-jet printing tank, which is prepared from the following raw materials in percentage by weight: 30 to 40 percent of acrylic modified polyester resin, 10 to 15 percent of polyurethane acrylate oligomer, 5 to 10 percent of amino resin, 5 to 10 percent of adhesion promoter, 10 to 20 percent of ethylene glycol monobutyl ether, 10 to 20 percent of N, N-dimethylformamide, 5 to 10 percent of solvent and the balance of water. The acrylic modified polyester resin is prepared from, by weight, 1%-3% of N, N-dimethylethanolamine, 0.5%-1% of oxidized polyethylene wax powder, 0.05%-0.2% of an acid catalyst, 0.2%-0.5% of a non-silicon flatting agent, 0.05%-0.2% of a defoaming agent and 15%-20% of deionized water, the acid value of the acrylic modified polyester resin is 40-50 mgKOH / g, and the solid content of the acrylic modified polyester resin is 60%-65%; the hydroxyl value of the polyurethane acrylate oligomer is 50 to 70mg KOH / g, and the solid content of the polyurethane acrylate oligomer is 60 to 65 percent. The primer can realize uniform spreading of UV ink, stable adhesion in the whole period and compatibility of multiple sterilization processes.

The invention belongs to the technical field of pavement maintenance materials, and particularly relates to an ultraviolet curing asphalt slurry seal material. The paint is prepared from the following components in parts by weight: 20-33 parts of decolorized asphalt, 2-8 parts of an ultraviolet curing resin system, 4-8 parts of diesel oil and 58-72 parts of mineral powder, wherein the ultraviolet curing resin system is prepared from the following components in parts by weight: 50-65 parts of polyurethane acrylic resin, 30-45 parts of acryloylmorpholine, 0.8-3 parts of 1-hydroxycyclohexyl phenyl ketone and 0.6-2 parts of dimethylethanolamine. The ultraviolet curing asphalt slurry seal material can be rapidly cured under ultraviolet irradiation, a hard coating is generally formed within several minutes to ten minutes, and the construction time is remarkably shortened, so that the interference time of a construction site is greatly shortened, the traffic efficiency of a road is favorably improved, and the influence on traffic is reduced.

The application discloses a spiral stud alloy co-deposition anticorrosion layer and a processing technology thereof. The alloy co-deposition anticorrosion layer comprises a rare earth zinc aluminum co-deposition layer and a sealing layer. The rare earth zinc aluminum co-deposition layer is formed by co-deposition of a co-deposition agent with the following components in parts by weight: zinc powder 40-55 parts, zinc aluminum powder 15-30 parts, zinc aluminum magnesium silicon powder 15-25 parts, and a permeation aid 1-15 parts. The sealing layer is formed by drying an aqueous sealing agent with the following components in parts by weight: aqueous acrylic resin 100 parts, dimethyl ethanolamine (DMEA) 3-4 parts, water-soluble acrylic modified polyester resin 8-12 parts, composite molybdate aqueous solution 45-55 parts, wetting dispersant 8-12 parts, defoaming agent 8-12 parts, filler 12-16 parts, and ultraviolet light absorber 1-3 parts.

The application discloses a kind of water-resistant wear-resistant wood paint and preparation method thereof. Including the following steps: step 1: methyl methacrylate, styrene, butyl acrylate, 2-ethylhexyl acrylate, acrylic acid, acrylamide, modified filler are mixed, stirring to completely dissolved, to obtain mixture A;2-butoxyethanol and benzoyl peroxide are mixed, stirring is uniform, to obtain mixture B;Step 2: mixture A is elevated temperature, with constant speed dropwise addition mixture B, after dropwise addition is completed, continue to react 2-3h, after reaction is completed, cooling to room temperature, using N, N-dimethyl ethanolamine adjusts pH, adds deionized water, to obtain wood paint. Advantage: the application is prepared by copolymerization of monomers such as methyl methacrylate, styrene and modified filler;Among them, the modified filler is treated by etching, amination and modification using Mo2Ti2AlC3 powder, which significantly improves the performance of the paint.

The invention relates to the technical field of organic synthesis, in particular to a catalyst, a preparation method and application thereof and a synthetic method of dimethylaminoethyl acrylate. According to the method disclosed by the invention, acrylic acid and N, N-dimethylethanolamine are used as raw materials, and the HZSM-5 molecular sieve loaded calcium-zinc-tin composite catalyst CaCl2-ZnCl2-SnCl4-HZSM-5 is used as a catalyst, so that dimethylaminoethyl acrylate can be efficiently synthesized. According to the preparation method, the HZSM-5 molecular sieve loaded calcium-zinc-tin composite catalyst CaCl2-ZnCl2-SnCl4-HZSM-5 is used as the catalyst, so that not only can the esterification reaction be efficiently catalyzed, but also the yield and the purity of the dimethylaminoethyl acrylate are high, and the generation of a large number of by-products is reduced.

The invention discloses a preparation method of a low-rotation-speed adaptive mixed emulsion explosive emulsifier, which comprises the following steps: S1, raw material preparation: taking polyisobutylene succinic anhydride as a lipophilic end raw material, N, N-dimethylethanolamine as a hydrophilic end raw material, a sodium hydroxide aqueous solution as a catalyst and base oil as a dispersion medium; and S2, esterification reaction: mixing polyisobutylene succinic anhydride and base oil according to the mass ratio of 2: 8, heating to 90 DEG C, uniformly stirring, adding N, N-dimethylethanolamine, controlling the mass ratio of polyisobutylene succinic anhydride to N, N-dimethylethanolamine to be 1: 2.0, slowly adding a catalyst below 100 DEG C, heating to 160 DEG C under the protection of nitrogen, and reacting at constant temperature for 6 hours to obtain the polymer emulsifier. The method is mild in reaction condition, simple in compounding process, wide in raw material source and suitable for industrial production.

The high flash point alkyd paint and the preparation method thereof belong to the field of paint, wherein the high flash point alkyd paint comprises: high flash point alkyd resin, various color environmental protection pigments, precipitated barium sulfate, organic bentonite, dispersing agent, defoaming agent, 8% cobalt octoate drier, 12% zirconium octoate drier, 4% calcium octoate drier, 4% zinc octoate drier, low naphthalene S150 solvent oil, D60 solvent oil, DPM solvent, N, N-dimethyl ethanolamine and methyl ethyl ketone oxime anti-skinning agent. The high flash point alkyd paint has a flash point of more than 60 DEG C (closed), belongs to non-dangerous chemical category, can be stored and transported according to general chemicals, meets the requirements of the recommended national standard GB / T 25251-2010 alkyd resin paint, is convenient to operate, has excellent performance, strictly executes the harmful substance limitation in GB 30981-2020 industrial protective paint, and is safe and environmentally friendly.

The invention discloses a low-temperature desorption and high-cycle-stability absorption liquid for capturing carbon dioxide and a preparation method and application thereof, and relates to the technical field of gas separation and purification, the absorption liquid comprises a main absorption component, an auxiliary agent and a solvent; the main absorption component is at least one of N-ethyl piperazine, 1-methyl piperazine and N-hydroxyethyl piperazine; the solvent is at least one of 1-dimethylamino-2-propyl alcohol, diethylaminoethanol and N, N-dimethylethanolamine; and the auxiliary agent is selected from a composite antioxidant and a desorption accelerator. Through the multi-component collaborative design, the system has excellent low-temperature desorption performance and long-term cycle stability on the premise of maintaining high trapping efficiency, long-term stable and efficient operation of the amine liquid is ensured, the operation cost caused by amine liquid degradation, equipment corrosion and high energy consumption is reduced, and good application prospects are achieved.

The application provides a preparation method of N,N,N,N-tetramethylethylenediamine and belongs to the technical field of organic synthesis. The preparation method provided by the application takes N,N-dimethylethanolamine as an initial raw material, first oxidizes the N,N-dimethylethanolamine to obtain N,N dimethylglyoxal, and then carries out a hydrogenation reaction on the N,N dimethylglyoxal and dimethylamine in the presence of hydrogen to obtain N,N,N,N-tetramethylethylenediamine. The preparation method provided by the application is high in selectivity of a target product, high in yield and simple in operation, and the selectivity of the target product N,N,N,N-tetramethylethylenediamine is greater than or equal to 98.3%, so that the product is high in selectivity.

This invention belongs to the field of water-based coating technology and relates to a water-based sealing coating for passenger vehicles with anti-flash rust function. By weight, it comprises 10-20 parts Fischer-Tropsch wax, 15-20 parts sulfonated lanolin cerium / lanthanum salt, 30-70 parts water, 1-4 parts dimethyl ethanolamine phenanthreneate, 2 parts dihydrazide terephthalate, and 1-5 parts isomeric tridecyl alcohol polyoxyethylene ether TO-8 modified with ethyl acetoacetate methacrylate. It primarily addresses the problem of flash rust on the inner walls of car door cavities and other body seams when using water-based products, and solves the corrosion problem caused by long-term inward evaporation of moisture from door cavities and seams when applying thick coatings. This invention uses dimethyl ethanolamine phenanthreneate at a moderate vapor pressure to ensure emulsification properties while its vapor-phase corrosion inhibition function prevents flash rust. Furthermore, as moisture and amine gradually evaporate, the self-crosslinking of the ketone carbonyl-hydrazide groups gradually decreases the HLB value of the system, giving the coating good water resistance in the early stages of drying, achieving a perfect water-based alternative.

The invention relates to the technical field of oilfield chemistry, in particular to a urea cation homopolymer ionic liquid clay stabilizer and a preparation method thereof.The urea cation homopolymer ionic liquid clay stabilizer is formed by compounding urea and a cation homopolymer containing cation and hydroxyl repetitive units, chloropropene is added into a suspension liquid formed by mixing N, N-dimethylethanolamine and urea for a reaction, and the ionic liquid clay stabilizer is obtained. And adding a required amount of initiator into the ionic liquid A, and carrying out a reaction to obtain the urea cation homopolymer ionic liquid clay stabilizer. The urea cation homopolymer ionic liquid clay stabilizer contains strong polar molecules of a plurality of cations and hydroxyl groups, and is high in charge density, strong in washing resistance and remarkable in clay expansion prevention effect.

This application relates to a low molecular weight, high viscosity polyacrylamide and its preparation method, belonging to the field of polymer material synthesis. The raw materials for preparation include the following components in parts by weight: 70-80 parts acrylamide, 8-12 parts 2-acrylamido-2-methylpropanesulfonic acid, 3-5 parts hydrophobic associating monomer, 3-6 parts reversible crosslinking monomer, 1-2 parts crosslinking agent, 0.3-0.5 parts surfactant, and 0.07-0.1 parts redox initiation system; the redox initiation system includes persulfate, sodium bisulfite, and N,N-dimethylethanolamine. The preparation method includes the following steps: adding the above monomers to water, stirring to prepare a mixed aqueous solution, adjusting the pH of the mixed aqueous solution to neutral, removing oxygen, adding the redox initiation system to react, and obtaining a polymer colloid; granulating, washing, drying, and pulverizing the polymer colloid to obtain the low molecular weight, high viscosity polyacrylamide. The polyacrylamide prepared in this application has high viscosity, good salt resistance, and shear recovery properties.

The invention relates to application of a salt crystal form of a compound to treatment of heart failure with preserved ejection fraction, and particularly provides a salt of a compound shown in a formula I. The salt is a sodium salt, a potassium salt, a calcium salt, a tert-butylamine salt, an ammonium salt, a choline salt, an L-lysine salt, a diethylamine salt, a dimethylethanolamine salt, a betaine salt or an ethylenediamine salt of the compound shown in the formula I. # imgabs0 #

This invention relates to the field of organic synthesis technology, specifically to a catalyst, its preparation method and application, and a method for synthesizing dimethylaminoethyl acrylate. In this invention, acrylic acid and N,N-dimethylethanolamine are used as raw materials, and a calcium-zinc-tin composite catalyst (CaCl2-ZnCl2-SnCl4-HZSM-5) supported on HZSM-5 molecular sieve is used as the catalyst to efficiently synthesize dimethylaminoethyl acrylate. Using the HZSM-5 molecular sieve-supported calcium-zinc-tin composite catalyst (CaCl2-ZnCl2-SnCl4-HZSM-5) not only efficiently catalyzes the esterification reaction but also results in high yield and high purity of dimethylaminoethyl acrylate, while reducing the formation of a large number of byproducts.

The application discloses a kind of low-temperature desorption and high cycle stability absorption liquid for capturing carbon dioxide and its preparation method and application, it is related to gas separation and purification technical field, including main absorption component, auxiliary agent and solvent;Main absorption component is at least one of N-ethyl piperazine, 1-methyl piperazine and N-hydroxyethyl piperazine;Solvent is at least one of 1-dimethylamino-2-propanol, diethylaminoethanol and N,N-dimethylethanolamine;Auxiliary agent is selected from composite antioxidant and desorption promoter.The multi-component synergistic design of the application makes the system maintain high capture efficiency under the premise, with excellent low-temperature desorption performance and long-term cycle stability, ensures that amine liquid long-term stable and efficient operation, reduces the operating cost caused by amine liquid degradation, equipment corrosion and high energy consumption, with good application prospect.

The present application relates to the technical field of rust preventive, in particular to a water-based acrylic resin rotor rust preventive and a processing method thereof.The water-based acrylic resin rotor rust preventive comprises the following raw materials: 50-60 parts of modified acrylic resin, 10-20 parts of deionized water, 0.1-0.2 parts of dimethyl ethanolamine, 4-6 parts of barium sulfate, 10-15 parts of mica iron oxide, 0.1-0.3 parts of dispersing agent, 0.1-0.2 parts of defoaming agent, 0.1-0.3 parts of leveling agent and 1-3 parts of film-forming aid by weight fraction.The present application combines rust preventive A and rust preventive B in the water-based acrylic resin to play a synergistic effect, thereby preparing the water-based acrylic resin rotor rust preventive with excellent rust prevention and adhesion, and excellent corrosion resistance and hydrophobicity.

The invention relates to the technical field of paint spraying coatings for new energy automobiles, in particular to a paint spraying coating for a water-based magnetic material for a new energy automobile and a preparation method of the paint spraying coating for the water-based magnetic material for the new energy automobile. The water-based antirust paint is prepared from the following components in parts by weight: 0.1 to 1 part of N, N-dimethylethanolamine, 5 to 10 parts of diethylene glycol monobutyl ether, 10 to 17 parts of inorganic filler, 5 to 10 parts of antirust pigment, 10 to 20 parts of amino resin, 0.5 to 3 parts of dispersing agent, 0.1 to 1 part of defoaming agent, 0.1 to 1 part of wetting agent, 0.1 to 1 part of flatting agent, 15 to 20 parts of deionized water and 5 to 15 parts of water-based color paste. The inorganic filler is a mixture of talcum powder and silicon dioxide; the paint has the advantage that the corrosion resistance and the environment-resistant reliability of a thin paint film can be improved.

The present invention relates to the use of salt forms of a compound and crystal forms thereof in the treatment of heart failure with preserved ejection fraction. Specifically provided are salts of the compound as shown in formula I, wherein the salts are sodium salts, potassium salts, calcium salts, tert-butylamine salts, ammonium salts, choline salts, L-lysine salts, diethylamine salts, dimethylethanolamine salts, betaine salts or ethylenediamine salts of the compound as shown in formula I.

The invention belongs to the technical field of water-based coatings, and relates to a water-based plugging coating with an anti-flash-rust function for a passenger car. The invention relates to a water-based cleaning agent which comprises the following components in parts by weight: 10-20 parts of Fischer-Tropsch wax, 15-20 parts of sulfonated lanolin cerium / lanthanum salt, 30-70 parts of water, 1-4 parts of phenanthrene formic acid dimethylethanolamine salt, 2 parts of terephthalic acid dihydrazide and 1-5 parts of acetoacetoxy ethyl methacrylate modified iso-tridecanol polyoxyethylene ether TO-8. The method mainly solves the problem of flash rust of the inner wall of a cavity when a water-based product is used at the automobile door cavity folding edge and other automobile body gaps, and solves the problem of corrosion in the long-term inward volatilization process of water in the automobile door folding edge gaps when a coating is thickly coated. The phenanthrene formic acid dimethylethanolamine salt with moderate vapor pressure is used for guaranteeing the emulsifying characteristic, meanwhile, the gas-phase corrosion inhibition function of the phenanthrene formic acid dimethylethanolamine salt prevents flash rust, and along with gradual volatilization of water and amine, self-crosslinking of keto carbonyl-hydrazide and the HLB value of a system are gradually reduced, so that the coating has better waterproofness in the initial drying stage, and the water resistance of the coating is greatly improved. Perfect water-based substitution is realized.

The invention discloses water-borne epoxy resin and a preparation process of the water-borne epoxy resin. The water-based paint is prepared from the following raw materials in parts by weight: 3.55 parts of methylbenzene, 27.43 parts of oleic acid, 118.87 parts of epoxy resin, 17.03 parts of butyl acrylate, 27.43 parts of styrene, 17.52 parts of butyl methacrylate, 17.52 parts of 2-ethylhexyl acrylate, 17.03 parts of methacrylic acid, 11.58 parts of ethylene glycol butyl ether, 11.58 parts of propylene glycol monomethyl ether, 3.55 parts of benzoyl peroxide, 23.77 parts of an emulsifier, 14.2 parts of dimethylethanolamine and 350.68 parts of pure water. A long-chain fatty acid flexible group is introduced into an epoxy resin molecular chain, so that the brittleness is improved from the molecular structure level; then, through composite copolymerization of flexible monomers such as butyl acrylate and 2-ethylhexyl acrylate in the step S2 and functional monomers such as methacrylic acid and styrene, hydrophilic groups and compatible groups are synchronously introduced, and the problems that traditional waterborne epoxy resin is high in interfacial tension with a base material and matched auxiliaries, and layering and shrinkage are prone to occurring are solved.

The application discloses an RNA deprotection agent and application thereof, and belongs to the technical field of nucleic acid synthesis, and comprises the following components by volume: 60 parts of 1-methyl-2-pyrrolidone, 30 parts of dimethyl ethanolamine hydrofluoride and 40 parts of dimethyl ethanolamine; the dimethyl ethanolamine hydrofluoride is synthesized by the following steps: adding dimethyl ethanolamine into a sealed reaction container, cooling for 10-20 min through an acetone dry ice bath, then condensing anhydrous hydrogen fluoride into the reaction container, cooling for 10-15 min through an acetone dry ice bath, and heating to 25±2 DEG C at a temperature increasing speed of 0.5-1 DEG C / min to obtain the dimethyl ethanolamine hydrofluoride. Compared with the RNA deprotection agent in the prior art which takes triethylamine trihydrogen fluoride salt and triethylamine as raw materials, the RNA deprotection agent can reduce the degree of RNA deprotonation, reduce the generation of by-products, improve the purity of RNA synthesis, and improve the success rate of RNA synthesis.

The present application relates to the field of surfactant preparation technology, and specifically to a fluorocarbon cationic surfactant, its preparation method, and drainage aid. The preparation method of the fluorocarbon cationic surfactant of the present application comprises: reacting perfluorohexyl ethylsulfonyl chloride and N,N-dimethylethanolamine under a first reaction condition to generate compound I; reacting compound I and a quaternizing agent X-R under a second reaction condition, and removing impurities from the reaction product after the reaction is completed to obtain a fluorocarbon cationic surfactant; wherein X is ‑Cl or ‑Br, and R is ‑C7H7, ‑CH2CH2OH, ‑CH(CH3)2, or ‑CH2CH2CH3. The fluorocarbon cationic surfactant of the present application avoids the use of PFOS-containing ingredients and retains the high surface activity of PFOS to the greatest extent, making it an ideal cationic surfactant for drainage aids in tertiary oil recovery.