26 results about "Diacetone alcohol" patented technology

This invention provides a pesticide synergist, its preparation method, and its application, belonging to the field of pesticide adjuvants. The pesticide synergist provided by this invention comprises, by weight percentage, 3.5-4.5% lauric acid, 5.5-6.5% diacetone alcohol, 10-15% emulsifier, and 74-80% solubilizer. The pesticide synergist provided by this invention is environmentally friendly, can improve the contact and adhesion between the active ingredient of the pesticide and its application site, improve the efficiency of pesticide use, and can still maintain high efficacy while reducing the dosage of herbicides, insecticides, and fungicides. Ultimately, it reduces environmental pollution, increases crop yield, lowers costs, and increases profits.

The application discloses a spin coating dispersant for grain boundary diffusion of cerium-rich neodymium-iron-boron magnet and a use method, and belongs to the technical field of neodymium-iron-boron magnet. In view of the selection of the dispersant when rare earth elements are coated by the spin coating method in the process of the grain boundary diffusion of the cerium-rich neodymium-iron-boron magnet, the application provides a suitable spin coating dispersant, which can maximally improve the magnetism of the cerium-rich neodymium-iron-boron magnet under the premise that the magnet and the rare earth elements have the same weight, thereby reducing the total amount of the rare earth elements used in the grain boundary diffusion and reducing the cost. The spin coating dispersant is composed of polyvinyl alcohol and diacetone alcohol as a cosolvent in different mass ratios. Through reasonable compounding of the polyvinyl alcohol and the cosolvent, the surface tension of the dispersion system can be effectively reduced, the wetting capacity of the dispersant to the dispersion source can be enhanced, and the diffusion source can be uniformly dispersed in the dispersant through the steric hindrance effect, so that a stable suspension is formed, and the uniformity of the grain boundary diffusion is remarkably improved.

This adhesive composition includes: an adhesive solution which comprises a dilution solvent and an adhesive component including one or more components selected from a silane coupling agent, an organic titanate compound, an aluminate-based coupling agent, and a zirconate-based coupling agent; and a slow-volatile solvent which is added separately from the adhesive solution, can dissolve the adhesive components therein, and has a vapor pressure at 20°C of 2.33 kPa or less. The slow-volatile solvent includes one or more components selected from methyl isobutyl ketone, ethylene glycol, diacetone alcohol, and ethyl cellosolve.

The present invention relates to a purification process of high purity isopropyl alcohol for semiconductor cleaning processes, comprising the step of removing diacetone alcohol, boric acid triisopropyl ester and metal impurities by means of a distillation process after removing diacetone alcohol in isopropyl alcohol by an adsorption process.

The invention discloses a waterproof moisture-permeable composite structure membrane based on mixed solvent regulation and control and a preparation method, and belongs to the technical field of materials. The preparation method of the waterproof moisture-permeable composite structure membrane comprises the following steps: carrying out electrostatic spraying on a polyurethane nanofiber membrane base material with a low-surface-energy polyurethane spraying solution, so as to obtain the waterproof moisture-permeable composite structure membrane, wherein a solvent used by the polyurethane spraying solution is formed by mixing a solvent used by the polyurethane spinning solution and diacetone alcohol; according to the mixed solvent method, a polyurethane fiber base material is swelled, molecular chain diffusion and entanglement between the base material and an electrostatic spraying product interface are promoted, so that the bonding force between the composite structure interfaces is improved, and a wafer and cylinder multi-scale composite structure is innovatively formed on a polyurethane nanofiber membrane; the wear resistance, stripping resistance and overall durability of the composite structure layer are improved; the lyophobic performance of the prepared waterproof moisture-permeable composite structure film is further improved, the durability is improved, and therefore the waterproof moisture-permeable composite structure film can be better and practically applied to the field of medical and defense protection.

An impregnation liquid comprises diacetone alcohol, in a proportion of between 20 wt. % and 50 wt. %, glycerol trioleate, in a proportion of between 20 wt. % and 50 wt. %, castor oil, in a proportion of between 10 wt. % and 40 wt. %, acetone, in a proportion of between 3 wt. % and 5 wt. %, and at least one sulfonate, in a proportion of between 0 wt. % and 1.5 wt. %. A method for surface treatment of a ferrous part includes an impregnation step by such an impregnation liquid, and the treated part obtained.

The invention discloses a micro-fine-particle lepidolite reinforced recovery collecting agent and application of the micro-fine-particle lepidolite reinforced recovery collecting agent. The collecting agent is composed of sodium lauryl sulfate, sulfonated polyacrylamide, hexadecene amine, nitrilotriacetic acid and diacetone alcohol according to a specific proportion. According to the collecting agent, the anionic surfactant is used as a main component, the flocculation and chelation effects of multiple functional groups are utilized, the flotation problem of micro-fine particle lepidolite is solved, the surface lipophilicity of minerals is enhanced, and the flotation efficiency is improved. The collecting agent provided by the invention can efficiently recover the micro-fine particle lepidolite, and provides resource guarantee for the new energy industry.

The application discloses an ice flower effect photocuring paint, which comprises a film forming resin system and a composite diluent; the film forming resin system is composed of acrylic resin A 10-15 parts, acrylic resin B 20-25 parts, acrylic resin C 30 parts, ethyl acetate 14.5 parts, a photoinitiator 15-25 parts and a leveling agent 0.5 part; the composite diluent is composed of butyl acetate 30-35 parts, ethyl acetate 20-29 parts, propylene glycol methyl ether 10-15 parts, diacetone alcohol 11-15 parts and diisobutyl ketone 15-20 parts; the paint can be applied to plastic and other materials which are not resistant to high temperature by low preheating temperature, the curing temperature is low temperature of 55-65 DEG C, the UVA low energy is suitable for more types of materials, the film forming blooming is stable, and more market demands are met.

The utility model discloses a diacetone alcohol synthesis reaction heat recycling device, which relates to the technical field of diacetone alcohol synthesis and comprises a first heat conduction pipe wound on a feeding pipe of a first reboiler. One end of the first heat conduction pipe is communicated with the liquid outlet end of the total condenser through a first liquid inlet pipe, and the other end of the first heat conduction pipe is communicated with the liquid inlet end of the refrigerator through a first liquid outlet pipe; the second heat conduction pipe is wound on the outer wall of a pipe fitting for connecting the reactor and the reactive distillation tower, one end of the second heat conduction pipe is communicated with the liquid outlet end of the cooler through a second liquid inlet pipe, and the other end of the second heat conduction pipe is communicated with the liquid inlet end of the refrigerator through a second liquid outlet pipe; the third heat conduction pipe is wound on the feeding pipe of the second reboiler, one end of the third heat conduction pipe is communicated with the liquid outlet end of the condenser through a third liquid inlet pipe, and the other end of the third heat conduction pipe is communicated with the liquid inlet end of the refrigerator through a third liquid outlet pipe; the device has the advantages of being convenient to use, reducing energy consumption and production cost and the like.

The application discloses a two-component water-based polyurethane finish and a preparation method thereof. The two-component water-based polyurethane finish comprises an A component and a B component. The A component comprises the following components in the following proportions by weight: 40-70 parts of a water-based hydroxyl acrylic acid dispersion, 5-12 parts of an activation period lengthening agent, 1-4 parts of a light stabilizer, 0.2-1 part of a dispersing agent, 0.5-2.5 parts of an anti-bubble assistant and 0.05-0.4 parts of a pH regulator. The B component comprises the following components in the following proportions by weight: 40-70 parts of a polyisocyanate curing agent and 30-60 parts of a solvent. The activation period lengthening agent is a mixture of diacetone alcohol and ethylene glycol butyl ether acetate in a weight ratio of 2:(1-3). The two-component water-based polyurethane finish of the application reduces the reaction speed of the A component and the B component after mixing by using the diacetone alcohol and the ethylene glycol butyl ether acetate in specific amounts and weight ratios, and prolongs the activation period of the two-component water-based polyurethane finish.

This application discloses a method for preparing diacetone alcohol by acetone condensation, comprising the following steps: in a reactor, acetone is contacted with a catalyst, stirred, and reacted to obtain diacetone alcohol; the catalyst is selected from a molecular sieve treated with ammonia; the molecular sieve is selected from at least one of MCM-41 molecular sieve, MCM-48 molecular sieve, and SBA-15 molecular sieve. This method has advantages such as high acetone conversion rate and diacetone alcohol yield, good catalyst recycling performance, simple post-reaction treatment, and no waste salt or wastewater generated.

The invention discloses a spin-coating dispersing agent for grain boundary diffusion of a cerium-rich neodymium-iron-boron magnet and a using method, and belongs to the technical field of neodymium-iron-boron magnets. In order to solve the problem of selection of dispersants when rare earth elements are coated with a spin-coating method in the grain boundary diffusion cerium-rich neodymium-iron-boron magnet process, the invention provides a proper spin-coating dispersant which can improve the magnetic performance of cerium-rich neodymium-iron-boron to the maximum extent on the premise that the magnet and the rare earth elements are the same in weight, and the application range of the cerium-rich neodymium-iron-boron magnet is widened. Therefore, the total amount of rare earth elements for grain boundary diffusion is reduced, and cost is reduced. The spin-coating dispersant is composed of a polymeric dispersant polyvinyl alcohol and a cosolvent diacetone alcohol in different mass ratios, through reasonable compounding of the polymeric dispersant and the cosolvent, the surface tension of a dispersion system can be effectively reduced, the wetting ability of the dispersant to a dispersion source is enhanced, and through the steric hindrance effect, the surface tension of the dispersion system can be effectively reduced. And the diffusion source is uniformly dispersed in the dispersing agent to form a stable suspension, so that the uniformity of grain boundary diffusion is remarkably improved.

The invention discloses a continuous reaction process for producing diacetone alcohol, and relates to the technical field of chemical synthesis. The method comprises the following steps: step 1, condensation reaction: adding a composite catalyst into a reactor, then injecting acetone into the reactor through a feeding pipe, reacting and cooling to obtain a reaction mixture; step 2, primary rectification: transferring the reaction mixture into a rectification device, carrying out primary rectification, and collecting fractions of diacetone alcohol; 3, secondary rectification: carrying out secondary rectification on the diacetone alcohol fraction collected in the step 2, and collecting a diacetone alcohol primary product; and 4, tertiary rectification: carrying out tertiary rectification on the diacetone alcohol primary product collected in the step 3 to obtain diacetone alcohol. The method has the beneficial effects that the diacetone alcohol is prepared through an efficient continuous reaction process; moreover, through an effective modification process, the performance of the catalyst is improved, and the service life of the catalyst is also prolonged while the conversion rate of diacetone alcohol is improved.

The present invention relates to the field of synthesis of 2-methyl-3-butyn-2-ol (hereinafter referred to as methylbutynol), discloses a post-processing refining method of methylbutynol and an application thereof. The post-processing refining method comprises: (1) mixing a methylbutynol reaction mixture with a weakly basic carbonate for quenching, and flashing the obtained quencher; (2) recovering the crude liquid phase product obtained in step (1) with acetone, and rectifying the obtained methylbutynol crude product to obtain a pure methylbutynol. The present invention uses anhydrous weakly basic carbonate as a quenching agent, can reduce additional dehydration operations, shorten the production cycle, and improve production efficiency; can decompose diacetone alcohol into acetone, reduce acetone unit consumption, reduce impurity content, and improve the yield and purity of methylbutynol; can avoid causing diacetone alcohol to be dehydrated to generate mesityl oxide, and reduce the difficulty of rectifying methylbutynol.

The present application relates to a kind of methods for synthesizing corresponding alcohol by electrocatalytic hydrogenation of carbonyl compound, using flow electrolytic cell or split H-type electrolytic cell, adding carbonyl compound in cathode electrolyte, collecting liquid phase alcohol product at reaction output end.The carbonyl compound includes formaldehyde, acetaldehyde, acetone, n-propyl aldehyde, n-butyl aldehyde, n-pentanal, 4-hydroxy-2-butanone, diacetone alcohol, 2-pentanone, cyclobutanone, furfural and other carbonyl-containing compounds.Different types of electrolytic cell are used, and the iron-based electrocatalyst constructed has the characteristics of low cost, high activity and high selectivity.Compared with traditional thermal catalytic technology, the electrocatalytic hydrogenation of carbonyl compound to synthesize corresponding alcohol technology is carried out at room temperature and normal pressure, using water as hydrogen source, which not only reduces energy consumption and production cost, but also is green, safe and efficient, in line with the requirements of green chemical industry.

The utility model relates to the technical field of chemical production environmental protection, and discloses a diacetone alcohol production raffinate recovery device which comprises a recovery assembly, a filter assembly is placed on the upper portion in the recovery assembly, and the filter assembly comprises a primary filter part, an intermediate filter part and an advanced filter part. The primary filtering part, the intermediate filtering part and the high-grade filtering part are sequentially stacked from top to bottom, and the recycling assembly is externally connected with a heating assembly in a sleeving manner; the heating assembly comprises a heating cylinder, one side of the upper portion outside the peripheral surface of the heating cylinder is fixedly connected with an oil inlet piece, and one side surface of the bottom surface of the heating cylinder is fixedly connected with an oil outlet piece. According to the diacetone alcohol production raffinate recovery device, through the arrangement of the filtering assembly and the heating assembly, the problems that when an existing diacetone alcohol production raffinate recovery device is used, impurities in raffinate are not thoroughly separated, the purity of recovered diacetone alcohol is not high, and certain limitation exists in use are solved; or the energy consumption is high in the recovery process, and the production cost is increased.

The invention provides a long-acting corrosion-resistant environment-friendly coiled steel plate and a preparation method of a primer coating of the long-acting corrosion-resistant environment-friendly coiled steel plate and belongs to the technical field of coatings. Comprising a base plate, a primer coating and a finish coating, and the primer coating is prepared from, by mass, 40%-60% of epoxy modified polyester resin, 3%-5% of calcium ion exchange antirust pigment, 3%-5% of organic-inorganic composite antirust agent, 4%-6% of mixed ketone solvent, 3%-4% of aromatic hydrocarbon 100 # solvent, 6%-10% of dispersing agent, 3%-5% of titanium dioxide, 8%-12% of filler, 4%-7% of isocyanate and amino cross-linking agent and 0.2%-0.4% of defoaming agent. The coating is prepared from the following components in percentage by weight: 3-5% of epoxy phosphate, 0.2-0.4% of flatting agent, 3-5% of epoxy phosphate, 0.3-0.5% of phosphoric acid catalyst and the balance of diacetone alcohol. The calcium ion exchange anti-rust pigment and the organic-inorganic composite anti-rust agent are used for replacing a chromium-containing pigment, the GB 30981-2020 environmental protection standard is met, and toxic harm is avoided; through matching of the epoxy modified resin and the auxiliaries, the problems that a traditional coating is prone to cracking if hard and prone to damage if soft are solved, balance of hardness and toughness is achieved, and particularly the water erosion resistance of the bent position is improved.

An impregnation liquid comprising 20 to 50% by mass of diacetone alcohol, 20 to 50% by mass of glycerol trioleate, 10 to 40% by mass of castor oil, 3 to 5% by mass of acetone, and 0 to 1.5% by mass of at least one sulfonate. A surface treatment method for an iron part, comprising an impregnation step with the impregnation liquid, and a treated part obtained thereby.

The invention discloses a diacetone alcohol continuous production system and a process thereof, and relates to the technical field of diacetone alcohol production, two first partition plates are arranged in a distillation tower in parallel; the two second partition plates are arranged in the distillation tower in parallel; the first reaction box is positioned between the two first partition plates; the second reaction box is positioned between the first partition plate and the second partition plate; the third reaction box is positioned in the feeding cavity; the stripping box is located in the reboiler cavity, and fourth steam through holes are formed in the positions, corresponding to the second through holes, of the upper end wall and the lower end wall of the stripping box respectively; the device has the advantages that the device is convenient to use, and the sufficient reaction time can be effectively prolonged, so that the production efficiency is improved, and the like.

This invention belongs to the field of coating technology and discloses a laser-etchable PU elastic paint, its preparation method, and its application. The paint includes components A, B, and C. Component A is prepared from modified flexible polyester and polycarbonate resin. Component B is prepared from aliphatic polyisocyanate and butyl acetate. Component C is prepared from ethyl acetate, butyl acetate, and diacetone alcohol. The modified flexible polyester is prepared from polyester polyol and 2-hydroxy-4-methoxybenzophenone. This invention provides a laser-etchable PU elastic paint, its preparation method, and its application. This paint can be applied to the surface of electronic cigarette casings and can be used in conjunction with various color effect primers.

The invention relates to a liquid crystal aligning agent, a liquid crystal alignment film, and a liquid crystal display element. Provided are a liquid crystal aligning agent, a liquid crystal aligning film, and a liquid crystal display element which are capable of suppressing poor coating of an aligning film and non-uniformity of display of a liquid crystal display element due to the influence of a wiring structure or C / H, and which are capable of reducing viscosity while maintaining a resin component and a molecular weight. A liquid crystal aligning agent containing: at least one polymer selected from the group consisting of polyimide precursors and polyimides that are imides thereof; and a solvent containing a solvent A, a solvent B, and a solvent C. Solvent A: is selected from the group consisting of N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, [gamma]-butyrolactone, and dimethylimidazolinone. The solvent B is dipropylene glycol dimethyl ether. Solvent C: selected from the group consisting of diethylene glycol diethyl ether and diacetone alcohol.

In a method for purifying highly pure isopropyl alcohol used in a semiconductor cleaning process, diacetone alcohol present in isopropyl alcohol is removed by an adsorption process, and diacetone alcohol, triisopropyl borate, and metal impurities are removed by a distillation process. The purified isopropyl alcohol may have a purity of has the moisture of 10 ppm or less, the triisopropyl boron compound of 50 ppt or less, and each metal of the metal impurities of 20 ppt or less.

The invention provides a method for extracting and separating neodymium and gadolinium in neodymium-iron-boron waste or a solution by using a non-aqueous-phase organic solvent. Novel non-aqueous phase organic solvents diacetone alcohol, ethylene glycol and diethylene glycol are mixed with water to form a high-polarity (MP) organic phase, 260 # solvent oil is used as a diluent, P507 is used as an extraction agent to form a low-polarity (LP) organic phase, and the two phases are mixed to construct an efficient non-aqueous phase solvent extraction system. According to the extraction system, a polar organic solvent (such as diacetone alcohol, ethylene glycol and diethylene glycol) with low dielectric constant and low viscosity is used for replacing most of water to form a high-polarity organic phase, and an acid extraction agent P507 and 260 # solvent oil are used for forming a low-polarity organic phase to reduce acid and alkali loss and wastewater discharge; therefore, green and efficient separation of rare earth elements neodymium and gadolinium is realized. According to the system, the extraction efficiency of gadolinium can reach 98.99%, and the separation factor of gadolinium and neodymium reaches up to 656.

The utility model discloses a diacetone alcohol purification and separation device, and belongs to the technical field of chemical purification. The device mainly comprises a rectifying tower main body, a reboiler, a condenser, a feed port, an efficient packing layer, a temperature sensor, a pressure sensor, a controller, a return pipe, a regulating valve, a discharge port and a product collecting tank. The mass transfer efficiency is improved by arranging the efficient packing layer in the rectifying tower main body, the heating power of the reboiler and the cooling medium flow of the condenser are automatically adjusted by using the temperature sensor and the pressure sensor for real-time monitoring and cooperating with the controller, automatic control is realized, and meanwhile, the reflux ratio is controlled by adjusting the adjusting valve on the reflux pipe. The device effectively solves the problems of high energy consumption, low separation efficiency and insufficient automation degree in the existing diacetone alcohol purification and separation process, and can improve the product purity, reduce the production cost and reduce the environmental pollution.

The present invention relates to the technical field of organic synthesis, and in particular to a method for preparing diacetone alcohol and mesityl oxide from each other. A raw material liquid comprises acetone, mesityl oxide and diacetone alcohol. The preparation of mesityl oxide comprises the following specific steps: (1) preparing a raw material liquid, wherein the proportion of acetone and diacetone alcohol together is greater than the proportion of mesityl oxide; (2) adding a sulfonated resin catalyst and water into the raw material liquid, and catalyzing the raw material liquid by using the sulfonated resin, and the reaction temperature is 40-80°C. The present invention utilizes sulfuric acid, hydrochloric acid, p-toluenesulfonic acid and the sulfonated resin as catalysts, and can select diacetone alcohol to prepare mesityl oxide or select mesityl oxide to prepare diacetone alcohol according to market demand, thereby adjusting the product production structure and preventing product sedimentation.

The invention relates to the field of paint, in particular to paint as well as a processing system and a processing method thereof, and the method comprises the following steps: step 1, respectively placing various raw materials of the paint in a plurality of raw material cavities; step 2, driving a plurality of raw material cavities to pass through a communicating cavity in sequence by driving a conversion cylinder; 3, the paint raw materials in the raw material cavity enter the mixing barrel through the communicating cavity; the paint is prepared from the following raw materials in parts by weight: 20-25 parts of stearic acid; 16 to 20 parts of glacial acetic acid; 4-5 parts of organic fluorine epoxy resin; 12 to 15 parts of linseed oil; 6 to 8 parts of diacetone alcohol; 1 to 2 parts of alcohol-soluble resin; 2 to 3 parts of triethanolamine; 1 to 2 parts of polysiloxane; 8 to 10 parts of toluene diisocynate; 2 to 6 parts of diphenyl polysiloxane; 10 to 12 parts of benzophenone; the raw materials of the paint can be rapidly added in proportion according to different use requirements.