19 results about "Butyl vinyl ether" patented technology

The application relates to the field of fireproof bricks, and discloses a baking-free fireproof brick and a preparation method thereof. The baking-free fireproof brick comprises iron tailings, cement, fly ash, a functional additive, fine aggregate, quartz sand, a chromium aluminum phosphate binder, a water reducing agent and water. The functional additive is prepared by using aluminum chloride hexahydrate and alkaline silica sol as raw materials, ammonium molybdate tetrahydrate as a catalyst, growing mullite whiskers on the surface of silicon carbide fibers through vacuum impregnation and heat treatment, modifying the prepared composite silicon carbide fibers through 3-(methacryloxy) propyl trimethoxysilane, and then copolymerizing the modified composite silicon carbide fibers with acrylic acid and 4-hydroxybutyl vinyl ether. The chromium aluminum phosphate binder is prepared by using aluminum hydroxide, phosphoric acid and chromium trioxide as raw materials and calcium hydroxide as a curing agent. The baking-free fireproof brick prepared through the synergistic effect of the components has high compressive strength and bending strength, small water absorption and good baking-free fireproof and heat insulation performance.

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 invention discloses a viscosity reduction type polycarboxylic acid water reducing agent, a preparation method thereof and application of the viscosity reduction type polycarboxylic acid water reducing agent in concrete such as aluminoferrite and the like. The viscosity reduction type polycarboxylic acid water reducing agent can be particularly applied to aluminoferrite cement concrete systems, high-performance sprayed concrete systems, ultra-high-performance concrete systems, high-grade common concrete systems and the like. The water reducing agent is prepared through a high-molecular polymerization reaction and mainly comprises at least one of isopentenol polyoxyethylene ether, isobutenol polyoxyethylene ether, ethylene glycol monovinyl polyethylene glycol ether and 4-hydroxybutyl vinyl ether. The invention relates to a water-based acrylic acid / methacrylic acid copolymer, which comprises deionized water, maleic anhydride, maleic anhydride glyceride, sodium methallyl sulfonate, ethanol, sodium p-styrenesulfonate, a chain transfer agent, an initiator, acrylic acid, methacrylic acid, ethyl acrylate, a micromolecular functional monomer and the like, wherein the micromolecular functional monomer is triphenyl acetic acid-2-butene ester or 2-butene-1-O-TIPS. The viscosity reduction type polycarboxylate superplasticizer provided by the invention can obviously reduce the viscosity of concrete / mortar over time and improve the construction performance.

The utility model provides 4-hydroxybutyl vinyl ether fine distillation equipment, which belongs to the field of 4-hydroxybutyl vinyl ether production, and comprises a machine body, the bottom surface of the machine body is fixedly connected with a motor through a bracket, an electric heating pipe is arranged in the machine body, the side wall of the machine body is provided with an output pipe and a feeding pipe, and the output pipe and the feeding pipe are connected with the motor. The output pipe and the feeding pipe are both communicated with the interior of the machine body, and the stirring assembly comprises a first rotating shaft fixedly connected to the output end of the motor. By arranging the stirring assembly, heat can be rapidly conducted, the heating process is accelerated, meanwhile, the temperature in liquid can be evenly distributed, the phenomenon that the local temperature is too high is avoided, by arranging the efficient arrangement assembly, a gasified target object can be extracted, the moving speed of the gasified target object is increased, and the efficiency of the gasified target object is improved. Therefore, the distillation efficiency is improved.

The present invention belongs to the technical field of chemical synthesis, and particularly relates to a method for synthesizing flecainide. 4-Bromo-2-methyl-benzoic acid undergoes a substitution reaction with n-butyl vinyl ether to generate 4-acetyl-2-methylbenzoic acid, which successively undergoes a condensation reaction with 2-amino-N-(2,2,2-trifluoroethyl)acetamide, an addition reaction with 3,5-dichlorobenzaldehyde, an isocyclization reaction with tert-butyl nitrite, a substitution reaction with (trifluoromethyl)trimethylsilane, and preferably a heating reaction to generate flecainide. By controlling the types and dosages of catalysts in each step of the reaction, each step of the reaction has a high yield, and finally flecainide is obtained with a high yield.

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 belongs to the technical field of mineral flotation, and particularly relates to a beneficiation reagent for copper-molybdenum ore and a preparation method thereof. The beneficiation reagent for the copper molybdenum mine is prepared from the following raw materials in parts by weight: 20 to 30 parts of diesel oil, 10 to 20 parts of 4-hydroxybutyl vinyl ether, 5 to 20 parts of 9, 10-bis (3-mercaptopropoxy)-N-(piperidine-3-yl) octadecanamide and 5 to 20 parts of thiocarbamate. The structural formula of the 9, 10-bis (3-mercaptopropoxy)-N-(piperidine-3-yl) octadecane amide is as follows: # imgabs 0 #. The beneficiation reagent for the copper-molybdenum ore has good dispersity and flowability, can uniformly cover the surface of the ore, is good in selectivity and high in collecting capacity for the copper-molybdenum ore, and can effectively improve the flotation efficiency of the ore and obtain high-grade and high-recovery-rate copper-molybdenum concentrate.

The invention discloses high-performance vinyl polyoxyethylene ether and a preparation method thereof, and is characterized in that the high-performance vinyl polyoxyethylene ether comprises the following components in parts by weight: 0.05-0.15 part of a catalyst; 5-10 parts by weight of a raw material alcohol; 270 to 300 parts by weight of ethylene oxide; the catalyst comprises any one of metal sodium, potassium hydroxide, sodium hydroxide and sodium hydride; the raw material alcohol is diethylene glycol monovinyl ether or 4-hydroxybutyl vinyl ether. The grouting material is mainly applied to the fields of offshore wind power generation grouting materials, prefabricated parts, water conservancy projects and the like.

According to the preparation method and the application of the lignin-based degradable epoxy resin containing the acetal bond, hydroxyethylation modification of lignin is mainly designed, so that the lignin is converted into lignin polyol, and the lignin polyol and 4-hydroxybutyl vinyl ether with different mass ratios are subjected to graft copolymerization to obtain the lignin-based degradable epoxy resin containing the acetal bond. The lignin polyol containing the acetal structure and having different chain extension degrees is obtained. Then, epoxidized 4-hydroxybutyl vinyl ether is further synthesized, L-PHBVE-OH and HBVE-EP are terminated, and finally the lignin-based epoxy resin containing the acetal structure is obtained. The acetal bond is mainly and intensively distributed at the joint of the lignin and the petroleum-based epoxy monomer, and separation and cyclic utilization of the lignin and the petroleum-based epoxy monomer can be realized through acidolysis or alcoholysis. In addition, due to existence of a large number of ether bonds and a dissociation type dynamic reversible mechanism of acetal bonds, the lignin-based epoxy resin can be applied to the field of recyclable adhesives.

The invention relates to the field of refractory bricks, and discloses a baking-free refractory brick and a preparation method thereof, the baking-free refractory brick comprises iron tailings, cement, fly ash, a functional additive, fine aggregate, quartz sand, a chromium-aluminum phosphate binder, a water reducing agent and water; the functional additive is prepared by using aluminum chloride hexahydrate and alkaline silica sol as raw materials and ammonium molybdate tetrahydrate as a catalyst, growing mullite whiskers on the surfaces of silicon carbide fibers by adopting a vacuum impregnation and heat treatment method, modifying the prepared composite silicon carbide fibers with 3-(methylacryloyloxy) propyltrimethoxysilane, and then adding the modified composite silicon carbide fibers into the functional additive, so as to obtain the composite silicon carbide fiber modified by 3-(methylacryloyloxy) propyltrimethoxysilane modified by 3-(methylacryloyloxy) propyltrimethoxysilane. And then carrying out copolymerization with acrylic acid and 4-hydroxybutyl vinyl ether. The chromium-aluminum phosphate binder is prepared by using aluminum hydroxide, phosphoric acid and chromium sesquioxide as raw materials and calcium hydroxide as a curing agent. The baking-free refractory brick with high compressive strength and breaking strength, small water absorption and good fire resistance and heat insulation performance is prepared through the synergistic effect of all the components.

The invention relates to the technical field of chemical synthesis, in particular to a synthesis method of 2-methyl-4-acetylbenzoic acid, which comprises the following steps: S1, by taking 5-bromophthalide as an initial raw material, adding a solvent, n-butyl vinyl ether, alkali and a ligand, carrying out Heck coupling reaction under the action of a catalyst, and introducing acetyl through acidolysis to obtain a compound 1; and S2, adding a solvent and a reagent into the compound 1, and carrying out reduction ring opening to obtain a product compound 2. The preparation method has the beneficial effects that 5-bromophthalide is taken as a starting raw material and is subjected to a heck coupling reaction with n-butyl vinyl ether under the action of a catalyst, acetyl is introduced through acidolysis to obtain a compound 1, and finally, a product compound 2 is obtained through reduction and ring opening under the action of tetrabutylammonium perchlorate. The method has the advantages of novel reaction route, short reaction steps, high yield and cheap and easily available raw materials, and has great advantages for large-scale industrial production.

The invention discloses a corrosion-resistant and wear-resistant functional gradient coating and a preparation method thereof, belonging to the technical field of coatings. The corrosion-resistant and wear-resistant functional gradient coating of the present invention comprises an A1 component, an A2 component, and a B component; the A1 component comprises, by weight, 10 parts of 4-hydroxybutyl vinyl ether, 60-80 parts of a water-based hydroxylated acrylic resin, 10-25 parts of dihydroxy polydimethylsiloxane, 60-140 parts of water, and 10-40 parts of a first modified filler; the A2 component comprises, by weight, 5 parts of pentaerythritol, 5-15 parts of trihydroxybenzoic acid, 60-80 parts of a water-based hydroxylated acrylic resin, 60-140 parts of water, and 15-50 parts of a second modified filler; and the B component comprises an isocyanate curing agent. The coating formed by the corrosion-resistant and wear-resistant functional gradient coating of the present invention has good corrosion resistance and wear resistance.

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.

The present invention belongs to the field of mineral flotation technology, and in particular to a copper-molybdenum ore dressing agent and a preparation method thereof. The copper-molybdenum ore dressing agent, by weight, includes the following raw materials: 20 to 30 parts of diesel, 10 to 20 parts of 4-hydroxybutyl vinyl ether, 5 to 20 parts of 9,10-bis(3-mercaptopropoxy)-N-(piperidinane-3-yl) octadecane amide, and 5 to 20 parts of thiocarbamate; the structural formula of the 9,10-bis(3-mercaptopropoxy)-N-(piperidinane-3-yl) octadecane amide is: #imgabs0#. The copper-molybdenum ore dressing agent of the present invention not only has good dispersibility and fluidity, can be evenly covered on the surface of the mineral, but also has good selectivity and strong capture ability for copper-molybdenum minerals, can effectively improve the flotation efficiency of the mineral, and obtain copper-molybdenum concentrate with high grade and high recovery rate.

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.

The invention provides a catalyst for preparing 4-hydroxybutyl vinyl ether and a preparation method thereof.The method comprises the following steps that S1, a metal precursor aqueous solution is provided, the metal precursor aqueous solution comprises aluminum salt, cerium salt and a template agent, and the molar ratio of the aluminum element to the cerium element in the metal precursor aqueous solution is 10: (1-3); s2, adjusting the pH value of the metal precursor aqueous solution to 9-10, and aging to obtain a precursor precipitate; s3, carrying out first calcination treatment on the precursor precipitate to remove the template agent and activate the precursor precipitate to obtain a metal oxide carrier; and S4, soaking the metal oxide carrier in a potassium salt solution to load potassium ions on the metal oxide carrier, and carrying out second calcination treatment to obtain the catalyst for preparing 4-hydroxybutyl vinyl ether. The catalyst obtained by the method is especially designed for preparation of 4-hydroxybutyl vinyl ether by addition of acetylene to 1, 4-butanediol, and the catalyst has good catalytic activity and selectivity for the reaction.