42 results about "Diethanolamine" patented technology

The application discloses a synthesis method of aza-cyclic modified hydroxyalkyl diethanolamine borate linking agent, which comprises the following steps: (1) adding hydroxyalkyl diethanolamine and boric acid into a three-neck flask provided with a stirrer, a thermometer and a vacuum distillation device, and stirring and heating to react until no water is generated; (2) adding an aza-cyclic compound into the reaction system obtained in the step (1), increasing the reaction temperature, and removing water generated in the reaction by vacuum distillation when no water vapor is generated, so as to obtain a target product. The borate linking agent obtained by the synthesis method has good hydrolysis resistance, and when the borate linking agent is used in a hydroxyl-terminated solid propellant, the mechanical properties of the hydroxyl-terminated solid propellant can be effectively improved.

This invention discloses a low-temperature early-strength, low-viscosity liquid accelerator and its compounding and production process, relating to the field of concrete admixture technology. The accelerator is compounded from a basic skeleton component, a rheological stabilizing component, and a low-temperature early-strength component. The basic skeleton component includes an inorganic aluminum salt accelerator, anhydrous magnesium sulfate, diethanolamine, and water; the rheological stabilizing component includes liquid polyaluminum sulfate, an amphoteric internal salt viscosity reducer, and cationic nano-silica sol; the low-temperature early-strength component includes water-soluble organic aluminum salt, zirconium oxysulfate, lithium acetate, and water. This invention improves the rheological stability of the accelerator under low-temperature conditions through the combination of the amphoteric internal salt viscosity reducer and the cationic nano-silica sol; and improves the early strength development ability of the accelerator under low-temperature conditions through the combination of the water-soluble organic aluminum salt, zirconium oxysulfate, and lithium acetate.

The present disclosure discloses an alkanolamine multi-tailed lipid, a preparation method therefor, and a use thereof. The structural formulas of the lipid such as compound of Formula I, compound of Formula II or their stereoisomers, their tautomers, or their pharmaceutically acceptable salts:The ionizable lipid compound of the present disclosure maintains nanoparticle stability and delivery efficiency while simplifying LNP composition, offering advantages of high efficacy and low toxicity. Even under neutral conditions, the ionizable lipid compound can still adsorb mRNA through hydrogen bonding and van der Waals interactions. The synthesis method for the diethanolamine multi-tailed ionizable lipid of the present disclosure is straightforward. The ionizable lipid can be prepared on a large scale via a few addition reaction steps, which is convenient for high-throughput material screening.

This invention relates to the field of bionanomaterials technology, and particularly to mitochondrial-targeting nanomaterials based on ZnO quantum dots, their preparation methods, and applications. The preparation method of mitochondrial-targeting nanomaterials based on ZnO quantum dots includes the following steps: synthesis of silanized HNO donor: hydroxylamine hydrochloride is dissolved in a mixed solvent of anhydrous tetrahydrofuran and anhydrous pyridine, and a dichloromethane solution of 2-(4-chlorosulfonylphenyl)ethyltrimethoxysilane is added. The reaction is carried out with stirring at room temperature, and after post-treatment, silanized HNO donor is obtained; synthesis of zinc oxide quantum dots: zinc acetate dihydrate is dissolved in anhydrous ethanol, diethanolamine is added, the reaction is carried out, and after post-treatment, zinc oxide quantum dots are obtained. The preparation method can prepare mitochondrial-targeting nanomaterials that achieve precise delivery, controlled release, and visual tracking of HNO into cardiac mitochondria, solving the technical problems of traditional HNO donors' inability to achieve stable loading on a carrier and lack of targeting ability to mitochondria.

This invention provides a synthesis process for olafron and its application, comprising the following steps: mixing a solvent, octadecylamine, and triethylamine, then pumping the mixture with 2-bromo-1-ethanol into a continuous flow reactor; extracting the reaction solution after the reaction and purifying it to obtain OLF-A1; mixing OLF-A1, a solvent, and potassium carbonate, heating the mixture and adding 3-bromo-1-chloropropane to react; extracting the reaction solution after the reaction and purifying it with silica gel to obtain OLF-A2; mixing OLF-A2, a solvent, and potassium carbonate, heating the mixture and adding diethanolamine; extracting the reaction solution after the reaction and purifying it to obtain OLF-A3; mixing OLF-A3 and a dehydrating agent, then adding hydrofluoric acid, heating and stirring, concentrating the mixture, and purifying it to obtain the finished product, olafron. This invention solves the problems of excessive impurities and low yield in conventional processes by optimizing the reaction apparatus and purification methods for intermediate synthesis, providing technical support for the efficient synthesis of olafron.

This invention relates to the field of coating technology and discloses a weather-resistant luminescent coating and its preparation process. The invention involves reacting polyester polyol, isocyanate monomer, 2,2-dimethylolpropionic acid, and N-(acetoacetate-based)diethanolamine, followed by mixing with fillers, luminescent powder, emulsifying agents, and aminopropyl-terminated polydimethylsiloxane to obtain the weather-resistant luminescent coating. The aminopropyl-terminated polydimethylsiloxane and polyurethane undergo chemical cross-linking to form a tight three-dimensional chemical cross-linking network, which is not easily penetrated by corrosive media such as water. This significantly improves the water and weather resistance of the polyurethane coating film, preventing yellowing, chalking, and cracking even after long-term outdoor exposure. Furthermore, the high flexibility of the polysiloxane molecular chain achieves a dynamic balance between toughening and cross-linking rigidity of the polyurethane, improving the impact resistance and flexibility of the coating film, making it less prone to peeling and cracking.

The application discloses a preparation method of a railway special aluminum alloy power cable, which comprises the following steps: 10-15 parts of bisphenol A type epoxy resin are added into 30-35 parts of acetone solvent, then 2-4 parts of diethanolamine is added and stirred to be fully mixed to obtain a resin emulsion. The power cable is coated with a PVA-based coating agent on the surface of the cable rubber body, the PVA-based coating agent is prepared by mixing and matching PVA powder, a chitosan solution, modified hydroxyapatite and silane coupling kaolin agent, the performance of the product is improved through the mixing and matching of the raw materials and the mutual coordination, and the prepared power cable is improved in the coordination between the stain resistance and the oxygen permeability and moisture permeability.

The present application belongs to the technical field of reactive flame-retardant polyether polyols for polyurethane, and relates to a hydrolysis-resistant flame-retardant polyether polyol and a preparation method thereof. The polyether polyol is formed by compounding trihydroxy polyoxypropylene ether and a phosphorus-containing reactive polyether polyol. The phosphorus-containing reactive polyether polyol is prepared by reacting 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, diethanolamine and paraformaldehyde, and then reacting with propylene oxide. The obtained product has a high hydroxyl value, moderate viscosity, low acid value, low moisture content, and low total content of sodium and potassium. After being immersed in water, the hydroxyl value retention rate is high, the relative increase in viscosity is small, and the increase in acid value is controlled. The product can solve the problem that the existing phosphorus-containing reactive polyether polyol flame-retardant is difficult to balance the flame-retardant improvement, flowability, reactivity and hydrolysis-resistant stability, and can be used for preparing polyurethane materials that require flame retardancy and hydrolysis-resistant stability.

This application relates to the technical field of corrosion protection for petrochemical equipment, specifically disclosing a highly efficient neutralizing corrosion inhibitor and its preparation method. The highly efficient neutralizing corrosion inhibitor is prepared from the following raw materials in parts by weight: 40-60 parts of a polymeric corrosion inhibitor, 10-20 parts of a neutralizing agent, 10-15 parts of a surfactant, 5-10 parts of an additive, and water; the polymeric corrosion inhibitor is copolymerized from alkenyl imidazoline quaternary ammonium salt monomer, alkenyl sulfonate monomer, and alkenyl dicarboxylic acid monomer; the neutralizing agent includes monoethanolamine and diethanolamine; wherein the amount of water is such that the highly efficient neutralizing corrosion inhibitor is formulated into a solution with a solid content of 10%-12%, at which point its pH is 11.0-11.5. The highly efficient neutralizing corrosion inhibitor obtained in this application effectively achieves a synergistic effect of low dosage and high corrosion inhibition rate.

The application relates to a silicon-fluorine electrolyte waste gas treatment agent and a preparation method and an electrolyte waste gas treatment method, and belongs to the technical field of electrolyte waste gas treatment materials, and comprises 25-35 parts of a composite amine component, 35-45 parts of a functional alcohol ether component, 5-8 parts of a synergistic promoter, 2-4 parts of a stabilizer and 15-25 parts of deionized water, wherein the composite amine component is a mixture of N-methyldiethanolamine, N-(2-hydroxyethyl)ethylenediamine and triethanolamine, the functional alcohol ether component is a mixture of polyethylene glycol dimethyl ether and diethylene glycol butyl ether, the synergistic promoter is a mixture of beta-cyclodextrin and lauryl betaine, and the stabilizer is a mixture of sodium pyrophosphate and disodium ethylenediaminetetraacetate. The silicon-fluorine electrolyte waste gas treatment agent prepared by the application has high treatment efficiency and regeneration capacity.

This invention discloses a carbon dioxide collection absorbent, its use, and a method for collecting carbon dioxide, relating to the technical field of carbon dioxide collection. The absorbent comprises an absorbent, an activator, an auxiliary agent, and / or a non-aqueous solvent, wherein the absorbent is at least one selected from 3-amino-1-propanol, monoethanolamine, and diethanolamine. Compared to conventional phase-change absorbents, the absorbent has significant advantages such as low viscosity, high carbon dioxide absorption capacity, and low regeneration temperature, which have positive significance in reducing energy consumption and costs in the process of collecting carbon dioxide from exhaust gas.

A wound healing accelerating dressing, its preparation method, and its application belong to the field of functional composite materials. The wound dressing comprises a double-layer structure; the upper layer is an antibacterial adhesive film, prepared by a solution reaction of raw materials including the following components: isophorone diisocyanate, triphenylmethane triisocyanate, hexafluoroisopropanol, polyetheramine 2000, N-methyldiethanolamine, glacial acetic acid, organotin catalyst, and acetone; the lower layer is prepared by a solution reaction of raw materials including the following components: isophorone diisocyanate, polyetheramine 2000, N-methyldiethanolamine, glacial acetic acid, liquid metal, gallic acid, and acetone. This dressing can achieve synergistic effects of protection, antibacterial properties, and electrical stimulation without the need for an external power source, and can be used as a wound healing accelerating dressing that mediates scarless repair, as well as other scar prevention medical materials.

This invention provides a continuous preparation method for N,N,N',N'-tetra(2-hydroxyethyl)hexamethylenediamide. Diethanolamine and a sodium methoxide catalyst are mixed in a first mixer, then mixed with dimethyl adipate in a second mixer before entering a continuous reactor for synthesis. After the reaction, the crude product is passed through a falling film evaporator for further reaction and removal of unseparated methanol byproducts, yielding high-purity liquid N,N,N',N'-tetra(2-hydroxyethyl)hexamethylenediamide. Finally, the product is granulated to obtain solid, commercially available granules. This invention solves the problem of continuous production in existing technologies, offering advantages such as short synthesis time, continuous granulation, and elimination of subsequent solidification, crushing, drying, and granulation processes, thus improving equipment efficiency.

Process for continuously preparing N-methyl-diethanolamine (MDEOA), the process comprising: a) feeding diethanolamine (DEOA), a methanolic formaldehyde solution and hydrogen into a reactor equipped with a heterogenous hydrogenation catalyst; and b) subjecting DEOA, hydrogen and formaldehyde to a reductive amination in the presence of the heterogenous hydrogenation catalyst to obtain MDEOA; and c) withdrawing from the reactor a reactor effluent comprising the MDEOA.

This invention relates to a water-soluble cutting fluid for drilling aluminum alloys, comprising, by weight percentage: 3-4% monoethanolamine, 8-12% triethanolamine, 4-6% diethanolamine, 4-7% carboxylic acid system, 6-8% high PO content low-foaming polyether ester, 2-3% glycerol, 2-3% anti-hard water agent, 2-3% neodecanoic acid, 1-2% bactericide, 0.15-0.20% polyether modified silicone oil defoamer, 0.10-0.15% polyether defoamer (GPE-3000), 0.05-0.1% hydrophobic fumed silica, 0.5-1.0% non-foaming corrosion inhibitor, 0.2-0.3% methylbenzotriazole (TTA), 0.3-0.5% dodecenyl succinic acid, 0.5-1.0% polyol phosphate ester (PAPE), 2-3% borate ester, 0.2-0.3% disodium EDTA, and a certain amount of deionized water. This invention also relates to a method for preparing a water-soluble cutting fluid for drilling aluminum alloys. This invention has the following advantages: it achieves root-cause suppression and long-lasting defoaming, while simultaneously inhibiting corrosion and discoloration of aluminum alloys and preventing rust on ferrous metals. It is suitable for the actual production needs of aluminum alloy drilling enterprises, has strong practicality, and has broad application value.

This invention relates to a concrete material based on shape memory alloy fibers and its preparation method, belonging to the field of novel wall material technology. It comprises a concrete matrix and modified SMA fibers dispersed therein. The modified SMA fibers are made by loading a surface treatment agent onto the surface of bent SMA fibers. The surface treatment agent is synthesized from an intermediate through a mercapto-olefin click addition reaction of ethylene dithiol and allyl glycidyl ether, followed by a ring-opening reaction with N-(3-aminopropyl)diethanolamine. After loading the surface treatment agent onto the bent fibers, they are straightened at low temperature. The heat of concrete hydration triggers the fibers to recover their bent shape. The treatment agent selectively accumulates at the fiber bends and promotes in-situ nucleation and growth of C-S-H gel, forming a spatial network reinforcement structure of fiber-hydration products. This invention solves the contradiction between poor workability and insufficient interfacial bonding of bent fibers in existing technologies, significantly improving fiber pull-out work, flexural strength, and crack self-healing ability.

The application belongs to the field of industrial gas purification, and particularly relates to an amine-based absorption composition and a preparation method and application thereof. The amine-based absorption composition is composed of N-methyldiethanolamine 30-50 wt%, N-ethylethanolamine 15-25 wt%, n-octanol 5-10 wt%, sodium molybdate 0.5-1.5 wt%, defoaming agent 50-200 ppm, and the balance of water. After the amine-based absorption composition removes acid gas in an absorption tower, the rich liquid can spontaneously separate into a lean phase and a rich phase, only a small amount of the rich phase needs to be heated and regenerated, and the lean phase is directly recycled. The application ensures deep removal of H2S, significantly reduces the regeneration energy consumption through efficient phase separation, has good system stability, is environmentally friendly, and is suitable for purification of industrial gases such as natural gas and refinery gas.

The application discloses a kind of preparation methods and products of biological friendly spheroid-like trimanganese tetraoxide nanometer, it is related to functional nanometer material technical field;The application includes that manganese salt is mixed with ultrapure water and obtains manganese salt solution;Catalyst, modifier are added and stirred uniformly, catalyst is selected from monoethanolamine, diethanolamine, triethanolamine, modifier is selected from polyethylene glycol, sodium alginate and its derivative, chitosan and its derivative, water-soluble cellulose and its derivative;Basic solution and acidic solution are added dropwise to adjust the pH value of manganese salt solution, ultrapure water is added and stirred uniformly and poured into hydrothermal reaction kettle;Hydrothermal reaction kettle is placed in drying oven and heated to complete reaction to obtain trimanganese tetraoxide slurry;Filter, rinse and dry to obtain trimanganese tetraoxide powder product;The application effectively reduces the biological toxicity of trimanganese tetraoxide nanoparticle, meets the strict biomedical application requirement, preparation method is simple, process condition is mild, does not need expensive equipment, and cost is conducive to control.

The application discloses a hollow polydopamine-iron coated trimanganese tetraoxide composite nanomaterial and a preparation method and application thereof. The composite nanomaterial comprises: trimanganese tetraoxide nanoparticles with a hollow structure; and a polydopamine-iron coating layer partially coated on the surface. The preparation method comprises: at least reacting a manganese source, diethanolamine and hydrogen peroxide to prepare solid trimanganese tetraoxide nanoparticles; and reacting the solid trimanganese tetraoxide nanoparticles with dopamine hydrochloride and an iron source to prepare the hollow polydopamine-iron coated trimanganese tetraoxide composite nanomaterial. The hollow polydopamine-iron coated trimanganese tetraoxide composite nanomaterial prepared by the application has a hollow structure and excellent catalytic performance and magnetic performance, can simultaneously realize T1 / T2 dual-mode imaging, can obviously kill tumor cells through a metal ion interference effect, and has a good application prospect in tumor diagnosis and treatment.

The application relates to the field of building waterproof materials, in particular to a synergistically stable high-performance non-chlorine, non-fluorine and non-alkali rapid setting agent for shotcrete and a preparation method thereof. The rapid setting agent is prepared from the following raw materials in parts by weight: aluminum sulfate 45-55 parts, triethanolamine 4-7 parts, diethanolamine 1-2 parts, synergistically stable and dispersing components 6.5-8 parts, aluminum silicate 3-5 parts, nano silicon sol 10-15 parts, amino acid 0.4-0.6 parts and a back elasticity reducing component 5-9 parts. The application realizes the synergy of the rapid setting and early strength functions and the durability function enhancement, solves the contradiction between the high aluminum sulfate concentration and the long-term storage stability, and guarantees the homogeneity and reliability of the product in the industrial production, transportation and use processes.

The present invention provides a hair treatment agent that can suppress the decrease in hair strength (firmness, resilience, resistance to breakage, and combability) caused by dyeing and bleaching treatments, while simultaneously suppressing the generation of unpleasant odors in the hair caused by these treatments. [Solution] A hair treatment agent used in mixture with a second agent containing hydrogen peroxide, comprising a carboxylic acid or a salt thereof and an alkaline agent, wherein the carboxylic acid is tartaric acid, the content of the carboxylic acid or salt thereof is 0.001 to 5% by mass, the alkaline agent is at least one selected from the group consisting of ammonia, diethanolamine, and aminomethylpropanol, and further contains a pH buffer, the pH buffer is a carbonate selected from the group consisting of ammonium bicarbonate, ammonium carbonate, sodium bicarbonate, sodium carbonate, potassium bicarbonate, and potassium carbonate, and the pH is 8.5 to 11.5.

The application discloses an oil-based water-alcohol-ester multi-element microemulsion fuel additive and a preparation method and application thereof, and belongs to the technical field of fuel additives. The additive is prepared by compounding fuel oil as a continuous phase, a water-alcohol-ester mixture as a dispersed phase, constructing an interface film by using phospholipid, in-situ reaction of oleic acid and diethyldiethanolamine, and combination of high-pressure atomization and magnetic field synergistic stirring according to a specific ratio. The application has excellent stability, a high content of polar components, can significantly reduce nitrogen oxide, hydrocarbon, carbon monoxide and particulate matter emissions, saves oil, protects the engine, improves power, and is suitable for multiple scenes in multiple versions. The white oil version is suitable for field kitchens of troops, and has economic, environmental protection and special application values.

This invention belongs to the field of petroleum extraction technology, specifically relating to a high-efficiency oil well wax inhibitor and its preparation method. The high-efficiency oil well wax inhibitor, by weight percentage, consists of the following raw materials: a mixed surfactant, 2-5%; TX-10, 0.5-1%; and the balance being water. The preparation method of the mixed surfactant is as follows: In a high-pressure reactor, sodium 2-(diethanolamine)ethanesulfonate, dimethyl sulfoxide, and a catalyst are added. The reactor is purged with nitrogen to replace the air, evacuated, stirred, and heated to 60°C. Propylene oxide is added, and stirring and heating are continued to maintain the reaction temperature. The mixture is then cooled to room temperature, transferred to an atmospheric pressure reactor, and 2-bromoethanephosphoric acid is added. The reaction is maintained at a constant temperature, with the pH kept at 7-8, to obtain the mixed surfactant. The wax inhibitor of this invention has the advantages of being environmentally friendly, having a high wax dissolving rate, a high wax inhibiting rate, and a high viscosity reduction rate.

[Problem] To provide a biaxially stretched polyolefin film that has antistatic performance. [Solution] A biaxially stretched polyolefin film comprising: (A) a glycerin fatty acid ester composed of an ester of a C12-24 fatty acid and glycerin; and (B) one or more selected from the group consisting of aliphatic diethanolamines, fatty acid esters of polyoxyethylene aliphatic amines, fatty acid diethanolamides, and fatty acid monoesters of fatty acid diethanolamides, said biaxially stretched polyolefin film being characterized in that the (A) glycerin fatty acid ester contains 0-15 mass% of glycerin fatty acid monoester, 30-60 mass% of glycerin fatty acid diester, and 30-60 mass% of glycerin fatty acid triester (provided that the total amount of said monoester, said diester, and said triester is 100 mass%).

This invention relates to the field of cooling crystallization technology, and more particularly to a cooling crystallization control method for the production of accelerators. The method includes: adding a fluoride-containing salt and water to a reaction vessel and heating; adding aluminum hydroxide; continuously stirring at a first stirring rate while slowly adding sulfuric acid; obtaining an aluminum sulfate system under preset pressure and temperature conditions; detecting the pH value to determine whether to add a neutralizing agent; cooling the aluminum sulfate system; adding a suspending stabilizer, an organic additive, and diethanolamine; continuously stirring at a first stirring rate to obtain an intermediate solution; transferring the intermediate solution to a crystallization tank for first-stage cooling; determining the nucleation endpoint by real-time monitoring of the turbidity change rate within the temperature range; and obtaining a nucleation system; performing a second-stage cooling based on the type of fluoride-containing salt and the turbidity at the nucleation endpoint to bring the nucleation system to the crystallization endpoint temperature, thus obtaining a crystallized system. This invention overcomes the problems of grain agglomeration and impurity encapsulation caused by abrupt changes in supersaturation.

This invention belongs to the field of biomedical technology, specifically relating to a dissociation solution for aluminum adjuvant-adsorbed influenza vaccines and a method for determining antigen content. The dissociation solution of this invention is composed of potassium phosphate solution, diethanolamine, Triton X-100, Tween-20, dodecyl dimethyl betaine, and water. This dissociation solution exhibits excellent dissociation efficiency, achieving a recovery rate of 106%-110% for hemagglutinin from H1N1, H3N2, and BV influenza vaccines. It effectively protects antigen activity and is simple to operate with wide applicability. The dissociated sample can be directly used for mainstream detection methods such as one-way immunodiffusion assay, enzyme-linked immunosorbent assay, and high-performance liquid chromatography, enabling precise quantification of antigen content in aluminum adjuvant-adsorbed influenza vaccines and providing reliable technical support for vaccine quality control.

The application discloses a method for constructing atypical near-infrared light-emitting polymers based on itaconic anhydride and application thereof, and belongs to the technical field of organic light-emitting materials. The method comprises the following steps: first, preparing a thiol-containing intermediate by reacting N-methyldiethanolamine derivatives with double / multi-thiol compounds; and then, performing nucleophilic ring-opening polymerization on the thiol-containing intermediate and itaconic anhydride to obtain a target polymer. The polymer is completely composed of non-conjugated structural units and does not contain a pi-conjugated aromatic ring, and the light emission is derived from cluster-induced light emission promoted by strong ion interaction formed in the polymerization process. By selecting different thiol compounds and regulating the topological structure (linear or hyperbranched) of the polymer, a polymer with an emission wavelength in the 600-800 nm near-infrared region can be prepared. The polymer has the advantages of simple synthesis, good water solubility, high biocompatibility, aggregation-induced light emission, pH / ion response and the like, and has important application value in the fields of near-infrared fluorescence imaging and biosensing.