7 results about "Butyl vinyl ether" patented technology

This application relates to the field of organic synthesis technology, specifically disclosing a process for preparing tert-butyl vinyl ether. The raw materials include solid tert-butanol, acetylene, tetrahydrofuran solvent, and potassium hydroxide catalyst, supplemented with auxiliary materials such as type 3A molecular sieves and activated alumina adsorbents. The preparation method involves: after dehydration and purification of the raw materials, the materials are introduced into a reaction vessel; temperature and pressure are controlled, and the reaction endpoint is monitored using an infrared spectrometer; byproducts are quenched and acetylene is recovered; the process involves multi-stage condensation, water washing to remove impurities, distillation separation, and solvent purification and recycling, with simultaneous integration of waste heat recovery and continuous material feeding. The tert-butyl vinyl ether prepared by this process, as an important fine chemical intermediate, can be used in coatings, adhesives, and polymer material modification, possessing advantages such as high purity and good stability. The preparation method achieves efficient utilization of materials and energy through multi-stage synergistic linkage, combining the advantages of green environmental protection, continuous and stable operation, and high resource utilization.

The application belongs to the field of fluorine-containing compounds, and particularly relates to a fluorine-containing polyether carboxylic acid and a preparation method and application thereof. The preparation method of the fluorine-containing polyether carboxylic acid comprises the following steps: 1) preparing perfluoroisobutyloxy propionyl fluoride by taking perfluoroisobutyryl fluoride as a raw material; 2) preparing perfluoroisobutyl vinyl ether by taking the perfluoroisobutyloxy propionyl fluoride as a raw material; 3) preparing perfluoroisobutyl alkoxy ethyl ether by taking the perfluoroisobutyl vinyl ether as a raw material; 4) preparing a fluorine-containing polyether ester by taking the perfluoroisobutyl alkoxy ethyl ether as a raw material; 5) preparing a fluorine-containing polyether carboxylic acid salt by taking the fluorine-containing polyether ester as a raw material; and 6) preparing the fluorine-containing polyether carboxylic acid by taking the fluorine-containing polyether carboxylic acid salt as a raw material. The technical scheme of the application finally obtains the fluorine-containing polyether carboxylic acid by taking the perfluoroisobutyryl fluoride as a starting raw material, the reaction yield of each step is high, the cost is low, the raw material is easy to obtain, the reaction condition has low requirement on equipment, the product is easy to handle, and the fluorine-containing polyether carboxylic acid product obtained finally has low fluorine ion content.

The invention relates to the technical field of chemical engineering and processes, and particularly discloses a preparation process of 4-hydroxybutyl vinyl ether. The raw materials comprise porous carriers such as potassium hydroxide, 1, 4-butanediol, acetylene, modified aluminum oxide or molecular sieves, palladium-based and nickel-based hydrogenation catalysts and the like; the preparation method comprises the following steps: firstly, preparing an immobilized catalyst through mixed loading and activation, constructing an inert environment through nitrogen displacement, then carrying out reactive distillation, then carrying out multi-stage separation, secondary displacement, material purification circulation and by-product directional hydro-conversion to realize efficient reuse of raw materials, and strengthening product purification through an organic vapor permeable membrane. The product can be used in the fields of high-grade coatings, environment-friendly adhesives, high-end electronic chemicals and the like, and meets the requirements of high-added-value fine chemical intermediates; the preparation method has the outstanding advantages of continuous and stable process operation, high separation precision, excellent raw material utilization rate and product purity, and by-product recycling.

The invention relates to a poly surfactant for oil displacement and a preparation method thereof, and relates to the technical field of high polymer materials, the preparation method comprises the following steps: (1) reacting palmitic acid, N, N-dimethyl trimethylene diamine and chloroethyl acrylate to obtain a cationic surfactant; (2) adding acrylamide, acrylic acid, a cationic surfactant, 2-acrylamide-2-methylpropanesulfonic acid, tetrahydrofurfuryl acrylate, 4-hydroxybutyl vinyl ether, a dispersing agent, a molecular weight regulator and a pH regulator into a composite solvent, and uniformly mixing to obtain a polymerization solution; and (3) introducing nitrogen into the polymerization solution, and then adding an initiator to initiate a polymerization reaction to obtain the surfactant polymer for oil displacement. The prepared polymer surfactant for oil displacement has good water solubility and tackifying performance, excellent salt resistance, temperature resistance and shearing resistance and excellent interfacial activity, has the capabilities of oil displacement of a surfactant and oil displacement of a polymer at the same time, and can improve the efficiency of on-site construction.

The utility model relates to a kind of hydroxybutyl vinyl ether reaction kettle in the technical field of reaction kettle equipment, including reaction kettle, reaction kettle is spherical, reaction kettle is equipped with heat exchange jacket, and medium inlet and medium outlet are equipped on heat exchange jacket;Reaction kettle is equipped with stirring assembly and scraping component in, and stirring assembly includes shaft one, and shaft one is connected with stepper motor one, and stirring rod is equipped on shaft one, and scraping component includes shaft two, and shaft two is connected with stepper motor two, and scraping rod is equipped on shaft two, and scraping rod is the arc shape matched with reaction kettle inner wall.This utility model reaction kettle is spherical, reduces dead angle, and stirring assembly can carry out efficient and sufficient stirring operation to the material in reaction kettle, so that the material in reaction kettle is heated more evenly, reaction is sufficient, and scraping rod avoids the adhesion of material on reaction kettle inner wall, improves the sufficiency and efficiency of reaction.

The invention relates to the technical field of chemical engineering, in particular to a preparation method of cyclohexyl ethyl vinyl ether, which comprises the following steps: S1, by taking phenethyl alcohol as a raw material and low-boiling-point alcohol (ethanol or isopropanol) as a solvent, carrying out hydrogenation reduction at 50-65 DEG C and 5-6 MPa under the catalysis of nickel / ruthenium carbon to obtain cyclohexyl ethanol, and recycling the catalyst and the solvent; and S2, mixing cyclohexyl ethanol with alkenyl ether (preferably butyl vinyl ether), alkali (pyridine or triethylamine), a palladium catalyst (preferably palladium chloride) and a ligand 1, 10-phenanthroline in a protective gas atmosphere, performing catalytic alcohol exchange at 100-110 DEG C, washing reaction liquid with water to adjust the pH value to 7, passing through a column, and distilling to obtain the product. The method is mild in condition, low in equipment requirement, free of solid waste and environmentally friendly; the catalyst is small in dosage and recyclable, the solvent can be reused, and the cost is low; the product has high purity and high yield, and is suitable for industrial mass production.

This application discloses a shape memory material and its preparation method, belonging to the field of new materials technology. The technical solution is as follows: A shape memory material is obtained by mixing and vulcanizing polyether-modified silicone oil, acrylate silicone oil, vinyl silicone oil, and a high thermal conductivity filler in a mass ratio of 100:1 to 30:1 to 30:0.1 to 10. The polyether-modified silicone oil is a mixture of hydrogen-containing silicone oil modified from polyether raw materials and other hydrogen-containing silicone oils. The preparation method of the mixture of hydrogen-containing silicone oil modified from polyether raw materials is as follows: mixing excess hydrogen-containing silicone oil with polyether raw materials and heating for 2 to 8 hours in the presence of a catalyst. The polyether raw materials are selected from at least one of methyl allyl polyoxyethylene ether, allyl alcohol polyoxyethylene ether, methyl allyl alcohol polyoxyethylene ether, hydroxybutyl vinyl ether polyoxyethylene ether, and isopentenyl alcohol polyoxyethylene ether. The high thermal conductivity filler has a thermal conductivity greater than 0.5 W / (m·K). The shape memory material provided by this application possesses high memory performance, high biocompatibility, and good stability.