31 results about "Butyrospermol acetate" patented technology

The invention discloses a benzene-free environment-friendly plastic printing ink diluent and a preparation method thereof, and relates to the field of chemical engineering. The environment-friendly flame retardant is prepared from the following components in parts by weight: 10 to 25 parts of ethyl acetate, 8 to 15 parts of refined methyl acetate, 5 to 10 parts of butyl acetate, 10 to 30 parts of dimethyl carbonate, 6 to 15 parts of methylal, 10 to 20 parts of propyl acetate, 2 to 7 parts of dibasic acid ester, 3 to 10 parts of propylene glycol monomethyl ether, 7 to 15 parts of isopropanol and 3 to 9 parts of propylene carbonate. According to the present invention, the ethyl acetate, the dimethyl carbonate and other benzene-free solvents are adopted to replace the traditional benzene-series solvent, such that the benzene-free environmental protection target is achieved, the environmental residue and the human health risk are substantially reduced, in addition, the propylene carbonate, the dibasic acid ester and the like in the formula further have the biodegradability, the environmental protection performance of the diluent is further improved, and the environmental protection performance of the diluent is further improved. The cost of the prepared benzene-free environment-friendly plastic printing ink diluent is remarkably reduced compared with that of an imported diluent.

The application discloses a method for preparing 3-methoxy-3-methyl-1-butyl acetate, and belongs to the technical field of organic compound synthesis. The method comprises the following steps: taking 3-methoxy-3-methyl-1-butanol as raw material, and respectively adopting acetic acid, acetic anhydride and acetyl chloride as acetylation reagents, and adding a catalyst or an acid-binding agent to perform acetylation reaction, so as to obtain 3-methoxy-3-methyl-1-butyl acetate. The application provides a synthesis method for 3-methoxy-3-methyl-1-butyl acetate, takes 3-methoxy-3-methyl-1-butanol as raw material, respectively adopts acetic acid, acetic anhydride and acetyl chloride as acetylation reagents, adds a catalyst or an acid-binding agent to perform acetylation reaction, and obtains 3-methoxy-3-methyl-1-butyl acetate. In view of the defect that there is no acetylation synthesis process suitable for the target product in the prior art, the related technical blank is filled.

The invention belongs to the technical field of coatings, and particularly relates to solvent-type crystal-permeable color paste as well as a preparation method and application thereof. The solvent-type crystal-permeable color paste comprises the following components in percentage by mass: 5%-10% of aldehyde ketone resin, 2%-7% of butyl acetate cellulose, 25%-40% of propylene glycol methyl ether acetate, 5%-15% of a dispersing agent, 15%-25% of nanoscale pigment and 20%-30% of butyl acetate, wherein the total mass of the solvent-type crystal-permeable color paste is 100%. In the solvent-type crystal penetration color paste, the aldehyde ketone resin has excellent nanoscale pigment wettability and dispersing performance, the butyl acetate cellulose contains butyryl besides hydroxyl and acetyl, the toughness and the water resistance are high, and the wider the solvent selection range is, the better the water resistance is. The propylene glycol methyl ether acetate and the butyl acetate are matched, so that the solubility of the nanoscale pigment and the resin can be improved. Through the combined action of all the components, the characteristics of excellent transparency, excellent color intensity, good permeability and the like are achieved.

The application provides a butyl acetate rectification method, which comprises the following steps: butyl acetate raw solution is preheated and then enters a rectification tower; high-concentration butyl acetate steam is discharged from the top of the tower and then enters a shell side of a waste heat recovery device, and tower bottom liquid is punched into a hot stream inlet of a preheating subsystem; the material in the tube side of the waste heat recovery device exchanges heat with the steam in the shell side under the driving of a circulating pump, the material in the tube side is boiled and evaporated after heat exchange, the generated gas-liquid mixture enters a purifier to be separated, the steam in the purifier enters an enthalpy booster from the top, is lifted in grade after the enthalpy is increased, and then enters the tower bottom of the rectification tower to participate in heat and mass transfer, and the liquid phase returns to the waste heat recovery device to participate in heat exchange and evaporation; the liquid from the hot stream outlet of the preheating subsystem enters a cooling subsystem, is separated by standing and layering, high-concentration butyl acetate solution is obtained from the upper layer, and the lower layer is an aqueous phase. The tower top condenser is omitted, the cooling water consumption is reduced, and the energy consumption of the butyl acetate rectification process is effectively reduced.

The invention provides a high-temperature-resistant non-stick coating and a production process thereof, and relates to the field of coating processing and production. Comprising the following raw materials in parts by weight: 65 to 67 parts of temperature-resistant modified resin, 0.3 to 0.4 part of spherical wax powder, 0.4 to 0.6 part of a dispersing agent, 0.1 to 0.3 part of a wetting agent, 0.4 to 0.6 part of M-5, 0.7 to 0.9 part of bentonite, 2 to 4 parts of C310-12 black powder, 0.6 to 0.8 part of a flatting agent, 1.6 to 1.9 parts of 167 amino resin, 4.3 to 4.6 parts of an adhesion promoter, 4 to 6 parts of a closed curing agent, 4.3 to 4.6 parts of butyl acetate, 9 to 11 parts of PMA and 1 to 3 parts of ethyl acetate. According to the present invention, the nanometer sand mill is adopted to repeatedly grind the material until the fineness is less than micron, the circulating pipeline is adopted to achieve the repeated circulating grinding of the material, and the filter screen is adopted to intercept the coarse particles so as to ensure the sufficient material grinding and the uniform fineness, such that the temperature-resistant modified resin, the C311 black powder and other components can be completely dispersed through the fine grinding; a foundation is laid for forming a compact coating after the coating is baked at a high temperature, a product is directly assisted to achieve super-strong high temperature resistance of 500-600 DEG C, and the problems that an existing coating is poor in high temperature resistance and the like, many in process defects and limited in application are solved.

The invention provides a preparation method of a dispersing agent for ink jet. The preparation method comprises the following steps: (1) preparing polyhydroxy acrylate; (2) preparing macromolecular polyurethane; and (3) mixing 20-25 parts by mass of polymer polyurethane, 10-15 parts by mass of polyhydroxy acrylate, 0.1-0.3 part by mass of dibutyltin dilaurate and 80-90 parts by mass of butyl acetate, stirring for 4-8 hours at the temperature of 90-110 DEG C, under the pressure of 0.1-0.5 MPa and under the protection of introduced nitrogen, cooling to 64-67 DEG C, adding 5-9 parts by mass of the modified nano material, continuously stirring and dissolving for 40-50 minutes, cooling and filtering to obtain the dispersing agent for ink jet. The groups in the dispersant can form an effective steric hindrance barrier, so that the environmental stability of the color paste can be improved. The dispersing agent disclosed by the invention can be used for preparing weak-solvent ink-jet color paste and is good in dispersity and stability.

The invention discloses a manufacturing method of heat-insulating glass, which comprises the following steps of: coating a first coating containing polyurethane coating liquid and butyl acetate on one side of a glass layer, and curing the first coating to form a scratch-resistant layer so as to play a role in preventing the glass layer from being scratched; the other surface of the glass layer is coated with a second coating containing a hardening coating, an ultraviolet light absorber and an ultraviolet reflecting agent, and the second coating is cured to form an ultraviolet-proof layer so as to play a role in preventing ultraviolet rays; the metal sputtering layer is formed on the anti-ultraviolet layer by ion sputtering, so that the surface of the metal sputtering layer can reflect strong light, and the heat insulation effect is achieved; and a stripping layer is formed on the metal sputtering layer, so that a protection effect is achieved, and the stripping layer is removed during use.

The invention relates to the technical field of coating compositions, in particular to a metal material surface protective coating and a preparation method thereof. The coating is prepared from the following raw materials in percentage by weight: 100 to 110 parts of film forming matter, 5 to 10 parts of butyl glycidyl ether, 3 to 5 parts of non-reactive toughening agent, 10 to 15 parts of zinc phosphate, 0.5 to 2 parts of silicon dioxide, 0.5 to 1.5 parts of dispersing agent, 0.3 to 0.8 part of defoaming agent, 0.2 to 0.5 part of flatting agent, 0.5 to 1.5 parts of silane coupling agent, 6 to 12 parts of butyl acetate and 0.1 to 0.8 part of propylene glycol methyl ether acetate. A compact coating system with excellent adhesive force, high hardness, good toughness and corrosion resistance is constructed, and comprehensive and long-acting protection on a metal base material is achieved.

The embodiment of the invention relates to the technical field of wastewater treatment, and provides a wastewater treatment device for butyl acetate production, the wastewater treatment device comprises a wastewater treatment cylinder, a special-shaped material mixing partition plate, a secondary partition plate and a hopper-shaped residue filtering cover, the upper end and the lower end of the wastewater treatment cylinder are detachably provided with an upper end cover and a lower end base in a sealed mode respectively, a power mixing mechanism is arranged on the upper end cover, a filling mechanism is arranged on the lower portion of the wastewater treatment barrel, the special-shaped mixing partition plate is arranged in the wastewater treatment barrel in a sealed mode, a concave mixing groove is formed in the upper portion of the special-shaped mixing partition plate, and a plurality of drainage grooves distributed at equal angles are formed in the lower portion of the special-shaped mixing partition plate. By means of the technical scheme, the problems that in the prior art, when a wastewater treatment device for butyl acetate production is used for extracting wastewater, blockage is prone to occurring, and the cleaning difficulty is large are solved.

The invention discloses a protective coating for the surface of an electronic component and a preparation method thereof, and relates to the technical field of coatings. The coating is prepared from the following raw materials in parts by mass: 100 parts of epoxy modified acrylate copolymer, 8 to 9 parts of butyl acetate, 6 to 7 parts of propylene glycol methyl ether acetate, 6 to 7 parts of isododecane, 4 to 6 parts of modified boron nitride nanotube, 3 to 5 parts of synergist, 0.2 to 0.4 part of 2-methylimidazole, 0.1 to 0.3 part of defoaming agent, 0.2 to 0.4 part of flatting agent and 0.1 to 0.3 part of sterilizing agent. The epoxy modified acrylate copolymer, the modified boron nitride nanotube, the synergist and other components are introduced, so that the adhesive force, impact resistance, wear resistance, weather resistance, aging resistance, dielectric strength, volume resistivity and high-frequency signal adaptability of the protective coating are effectively improved while the weldability of a lead of an electronic component is not affected. Therefore, the method has a wider application prospect.

The invention relates to the technical field of waste liquid recovery, in particular to a device and a process for recovering butyl acetate in waste liquid. Comprising a waste liquid inlet (1), a first valve (2), a waste liquid distributor (3), an adsorption material (4), a steam distributor (5), a steam inlet (6), a waste liquid outlet (7), a condenser (8), a collecting tank (9), a second valve (10) and an adsorption tower (11), the adsorption material (4) is adopted, the n-butyl acetate in the wastewater is adsorbed in a normal-temperature adsorption mode, then the adsorbent is regenerated and n-butyl acetate is recovered in a mode of heating the adsorbent by steam, and as only a small amount of adsorbent needs to be heated, the method has the advantages of reducing energy consumption and being simple to operate, and the production cost can be remarkably reduced.

The invention discloses a high-toughness and high-strength finishing coating and a preparation method thereof. The invention further discloses the high-toughness and high-strength finishing coating and the preparation method thereof. The coating comprises a main agent, a curing agent and a diluent, the main agent comprises a film forming component composed of elastic resin and 35% cellulose nitrate resin and matting powder, and the matting powder is fumed silica; the curing agent is aliphatic isocyanate and butyl acetate; the diluent comprises xylene, butyl acetate and propylene glycol; the problem that bright marks appear when fingernails, hard objects and the like are scratched by existing paint is solved.

The invention discloses a special resin for printing a metal coating material, and relates to the technical field of printing materials. Aiming at the problem that the existing resin is not matched with the heat-resistant characteristic of a metal coating material, the heat-resistant resin is prepared from the following raw materials in parts by weight: 40 to 60 parts of butyl acrylate, 30 to 40 parts of methyl methacrylate, 5 to 15 parts of hydroxyethyl acrylate, 5 parts of acrylic acid, 50 parts of butyl acetate, 50 parts of dimethylformamide and 1 part of benzoyl peroxide. The synthesis process comprises the following steps: feeding and polymerizing in batches at 80-90 DEG C, and keeping the temperature for 12 hours to obtain a resin solution; when the resin is used for printing ink, the resin can be cured after being baked for 25-30 minutes at 155-160 DEG C, the adhesive force of a coating is greater than or equal to grade 1, and the water boiling resistance and the ethanol soaking resistance are excellent. The ink is matched with a metal coating material, avoids damage to the film, is environmentally friendly, low in cost and suitable for printing of food and beverage metal coating cans, and promotes development of the green can manufacturing industry.

The invention provides an acrylic polyurethane coating composition for a wet-on-wet process and a preparation method of the acrylic polyurethane coating composition. The composition consists of a floating coat and a finishing coat, the main agent in the finish paint is prepared from the following components in parts by weight: 35 to 40 parts of hydroxypropyl resin, 1 to 3 parts of propylene glycol methyl ether acetate, 1.3 to 3.5 parts of S-100A, 1 to 3 parts of BYK163, 0.1 to 0.6 part of polyethylene wax, 0.5 to 1.4 parts of pigment yellow No.83, 3.5 to 4.5 parts of titanium dioxide, 2 to 6 parts of superfine precipitated barium sulfate, 12 to 18 parts of iron oxide yellow, 4.1 to 8 parts of butyl acetate, 14 to 18 parts of hydroxypropyl resin, 0 to 8 parts of hyperbranched polyester, 0.2 to 0.7 part of BYK358, 0.02 to 0.1 part of BYK300, 0.2 to 0.6 part of Tinuvin292, 0.6 to 1 part of Tinuvin1130 and 0.2 to 0.6 part of 10 percent DBTDL. According to the invention, the paint film meets the requirements of mechanical properties, and the overall appearance of the paint film is improved.

The invention discloses a long-acting anti-corrosion polyvinyl chloride fluorine-containing minium coating as well as a preparation method and application thereof, and belongs to the technical field of coating preparation. The long-acting anti-corrosion polyvinyl chloride fluorine-containing minium coating is prepared from a main agent and a polyurethane curing agent according to the mass ratio of (10 to 12) to (0.9 to 1.3), the main agent is prepared from the following components in parts by weight: 9 to 20 parts of modified polyvinyl chloride resin, 5 to 10 parts of fluorine-containing resin, 5 to 12 parts of acrylic resin, 40 to 50 parts of mixed solvent (prepared from cyclohexanone, dimethylbenzene and butyl acetate in a dosage ratio of 1: 1: 1), 2 to 6 parts of minium, 10 to 20 parts of pigment and filler, 0.15 to 0.28 part of modified weather-resistant agent and 0.05 to 0.15 part of defoaming agent. The coating prepared by the method has excellent corrosion resistance and weather resistance.

This application discloses an insulating, wear-resistant, superhydrophobic, and oleophobic coating for railway tracks and its preparation method, belonging to the field of functional coating technology. The coating comprises component A and component B. By weight, component A includes 100 parts of fluorosilicone resin, 0.5-1.5 parts of surface-fluorinated modified carbon nanotubes, 3-6 parts of modified nano-silica treated with fluorinated silazane, 10-15 parts of ultrafine alumina, 8-12 parts of mica powder, 5-10 parts of hollow microspheres, 0.5-1.0 parts of modified polyurethane, 0.5-1.0 parts of modified polyamide wax, 0.2-0.5 parts of silicone polyether emulsion, and 15-25 parts of a solvent formed by mixing butyl acetate and propylene glycol methyl ether acetate. Component B includes 5-10 parts of polyisocyanate curing agent. The ratio of component A to component B is 100:(3-7). The coating provided in this application has good durability and corrosion resistance. Even after long-term use, it can still maintain excellent insulation, wear resistance, and superhydrophobic and oleophobic properties, which has high economic value and broad application prospects.

The invention belongs to the technical field of coatings, and particularly relates to high-hardness anti-sticking single-component rigid latex paint for toys and a preparation method and application of the high-hardness anti-sticking single-component rigid latex paint for toys, the high-hardness anti-sticking single-component rigid latex paint for toys comprises varnish, and the varnish comprises the following components in parts by weight: 28-42 parts of acrylic resin with a high Tg value; 10 to 15 parts of acrylic resin; 5 to 10 parts of CAB resin; 3-8 parts of chlorinated polyether resin; 20 to 25 parts of butyl acetate; 3-6 parts of mixed propyl alcohol; 3-7 parts of ethylene glycol butyl ether; 3-6 parts of anti-settling slurry; 2-4 parts of a plasticizer; and 0.2 to 0.5 part of a leveling agent. The rigid latex paint disclosed by the invention has the effects of improving the hardness and dryness of a paint film and the anti-sticking packaging bag performance of the paint film on the premise of ensuring excellent adhesive force of the rigid latex paint and no cracking of the paint film.

The invention discloses a coating composition as well as a preparation method and application thereof, and relates to the technical field of coatings. The coating composition comprises a component A and a component B, the component A is prepared from the following components in parts by mass: 45 to 70 parts of hydroxyl-terminated hyperbranched polyester resin, 10 to 20 parts of acrylic acid modified alkyd resin, 10 to 30 parts of talcum powder, 3 to 6 parts of zinc stearate, 1 to 2 parts of functional additive and 6 to 10 parts of solvent; the component B is prepared from the following components in parts by mass: 40 to 50 parts of TDI (toluene diisocynate) adduct, 10 to 20 parts of TDI tripolymer and 32 to 48 parts of butyl acetate. The coating composition has the effect of no blistering in thick coating, is moderate in drying speed, good in water resistance and flexibility and low in harmful substance content, is beneficial to improving the coating construction efficiency, and is suitable for being used as a primer to be applied to furniture coating.

The utility model discloses a reboiler for butyl acetate production, which comprises an outer shell and a heating component arranged on the inner side of the outer shell, the bottom end of the outer surface of the outer shell is detachably connected with a supporting component, a cleaning component is arranged on the surface of the heating component in a sliding manner, one side of the heating component is detachably connected with a box outlet pipe, and the box outlet pipe is connected with a water inlet pipe. A servo motor is connected to the outer side wall of the box outlet pipe in an embedded mode, and the power output end of the servo motor penetrates through the box outlet pipe and extends into the outer shell. By arranging the cleaning structure, the heating pipe can be effectively cleaned, the problem that cleaning dead corners are prone to occurring when the surface of an existing heating pipe is cleaned is solved, the cleaning effect is effectively improved, dirt is prevented from being pushed by the surface of the heating pipe, and therefore the vaporization effect of butyl acetate is improved, and the production efficiency of butyl acetate is improved.

The present application relates to a kind of insulating temperature-resistant heat dissipation coatings, comprising the following mass ratio of components: 40-60 parts of polymethylsilicone resin, 4-8 parts of butyl acetate, 4-8 parts of n-butanol, 25-40 parts of silicon carbide, 5-15 parts of propylene glycol methyl ether acetate, wherein, the polymethylsilicone resin " O-Si-O " structure content is 30-50wt%, methoxyl content is 20-40wt%; The purity of the silicon carbide is 99.9%.The present application also provides a kind of preparation method of insulating temperature-resistant heat dissipation coatings, S1: the butyl acetate and the n-butanol are added to the polymethylsilicone resin, and pre-curing is carried out under the condition that temperature is 40-50 DEG C and rotation speed is 500-800 r / min, to obtain curing material;S2: under the condition that rotation speed is 1500-2000 r / min, the silicon carbide is added to curing material, after the silicon carbide is uniformly dispersed, propylene glycol methyl ether acetate is further added, to obtain dispersion liquid;S3: the dispersion liquid is filtered using 150 mesh filter screen, to obtain insulating temperature-resistant heat dissipation coatings.The insulating temperature-resistant heat dissipation coatings prepared by the present application can resist high temperature up to 400 DEG C, and the breakdown voltage is greater than 15KV / mm.

The present application relates to the technical field of chemical rectification, and provides a butyl acetate heat pump rectification system and method, which comprises a preheating unit, a rectification unit, an evaporation unit and a cooling separation unit, the evaporation unit is arranged between the rectification unit and the cooling separation unit, the third heat exchange passage in the evaporation unit transports the butyl acetate vapor with a relatively high temperature output by the rectification unit, the fourth heat exchange passage transports the heavy component solution with a relatively low temperature after heat exchange in the preheating unit, the heavy component solution with a relatively low temperature in the fourth heat exchange passage is used as a heat carrying medium, heat exchange is carried out between the heavy component solution with a relatively low temperature and the butyl acetate vapor with a relatively high temperature, the latent heat of the butyl acetate vapor output by the rectification unit is recycled, a condenser is not needed for condensation of the vapor phase at the top of the rectification tower in the prior art, the consumption of circulating cooling water is also reduced, and the energy consumption of the butyl acetate rectification process is effectively reduced.

The utility model provides a device for recovering butyl acetate in azoxystrobin production. The device comprises a distillation kettle, a condenser, a low-boiling-point substance collecting tank, a butyl acetate collecting tank and a vacuum pump, a gas phase outlet in the top of the distillation kettle is communicated with a gas phase inlet of a condenser, a liquid phase outlet of the condenser is connected with a liquid outlet pipe, the outlet end of the liquid outlet pipe is respectively connected with a first liquid conveying pipe and a second liquid conveying pipe, the first liquid conveying pipe is communicated with a low-boiling-point substance collecting tank, and the second liquid conveying pipe is communicated with a butyl acetate collecting tank; the top of the butyl acetate collecting tank is connected with a vacuum pump; the first infusion tube is provided with a first valve, and the second infusion tube is provided with a second valve. The method provided by the utility model realizes efficient recovery of butyl acetate.

The invention discloses an insulating wear-resistant super-hydrophobic oleophobic coating for a track and a preparation method thereof, and belongs to the technical field of functional coatings. The coating comprises a component A and a component B. The component A comprises the following components in parts by mass: 100 parts of fluorosilicone resin, 0.5-1.5 parts of surface fluorinated modified carbon nanotubes, 3-6 parts of modified nano silicon dioxide treated by fluorine-containing silazane, 10-15 parts of superfine aluminum oxide, 8-12 parts of mica powder, 5-10 parts of hollow microspheres, 0.5-1.0 part of modified polyurethane, 0.5-1.0 part of modified polyamide wax and 0.2-0.5 part of silicon polyether emulsion. And 15-25 parts of a solvent formed by mixing butyl acetate and propylene glycol methyl ether acetate. And the component B comprises 5-10 parts of a polyisocyanate curing agent. The dosage ratio of the component A to the component B is 100: (3-7). The coating provided by the invention is good in use durability, has corrosion resistance, can still keep excellent insulation, wear resistance and super-hydrophobic and oleophobic properties after being used for a long time, and is relatively high in economic value and wide in application prospect.

The invention relates to the technical field of coatings, and discloses a rare earth thermal insulation coating and a preparation method thereof. The coating is prepared from LaxGdyMnzO4 composite nano powder, polyurethane resin, a dispersing agent, a flatting agent, an anti-settling agent, a defoaming agent and a solvent system, wherein the solvent system is prepared from butyl acetate and propylene glycol monomethyl ether according to the mass ratio of 1 to 1. The rare earth thermal insulation coating prepared by the invention has excellent mid-infrared reflection and near-infrared selective absorption performance, and excellent thermal stability and aging resistance.

This invention discloses an esterification reactor for butyl acetate reaction, comprising an esterification reactor body with an opening at the top. A cover plate is rotatably connected to a first region of the opening, and a drive box is fixed above a second region. A motor is located outside the drive box, and two coaxially nested stirring shafts are rotatably connected inside the drive box. The drive box contains a power distribution mechanism composed of a pulley set and a gear set, enabling coaxial bidirectional independent stirring of the two stirring shafts driven by a single motor. The first stirring shaft is equipped with stirring blades, and the second stirring shaft is equipped with a stirring frame with a scraper and stirring rod. The second region of the opening has a feed pipe and an exhaust pipe. This invention effectively eliminates mixing dead zones, improves mixing efficiency and reaction effect, the scraper can remove adhering substances from the reactor wall in real time, and the partitioned opening design takes into account both closed production and convenient cleaning. The structure is reasonable and the operation is convenient.

The invention provides a coating, a preparation method of the coating and a spraying method of the coating, and belongs to the technical field of coatings. The coating is prepared from the following raw materials in parts by weight: 40 to 60 parts of chlorinated polypropylene modified resin, 1 to 5 parts of carbon black, 2 to 4 parts of fumed silica, 20 to 25 parts of titanium dioxide, 5 to 8 parts of aluminum paste, 0.5 to 2 parts of color masterbatch, 0.5 to 1 part of flatting agent, 8 to 10 parts of acetic ether and 3 to 5 parts of butyl acetate. The coating provided by the invention is uniformly distributed on the surface of a product, the adhesive force is stable, and the reject ratio of the product is reduced; the coating is used for one-time spraying, so that the spraying procedures are reduced, the spraying efficiency is improved, and the production cost is further reduced.

The utility model relates to the field of wastewater towers, in particular to a wastewater tower device applied to butyl acetate production, which comprises an oil-water separation tower, a concentrated water tank is fixedly connected to the bottom of the oil-water separation tower, a first rotating shaft is rotatably connected to the inner side of the oil-water separation tower, and a second rotating shaft is rotatably connected to the inner side of the concentrated water tank. A plurality of groups of stabilizing frames are fixedly connected to the outer wall of the centralized water tank, the stabilizing frames are rotationally connected with third rotating shafts through bearings, first gears fixedly sleeve the upper ends of the outer walls of the third rotating shafts and the first rotating shafts, the first gears are meshed with first chains, second gears fixedly sleeve the lower ends of the outer walls of the third rotating shafts and the second rotating shafts, and the second gears are meshed with second chains; the stirring blades in the oil-water separation tower and the centralized water tank can be simultaneously driven to rotate through a group of driving motors, the use cost is reduced, and meanwhile, the driving motors are arranged on the outer sides of the oil-water separation tower and the centralized water tank, so that the driving motors cannot be eroded by oil and water.

The invention discloses a PU white primer for an artificial stone bathtub. The PU white primer is prepared by blending a main agent, a curing agent and a diluent according to the mass ratio of 100: (49-51): (25-35), the main agent comprises 40%-50% of a nano silicon modified polymer, 5%-10% of castor oil alkyd resin, 3%-7% of a viscosity adjusting diluent, 0.1%-0.3% of a defoaming agent, 0.5%-1% of a dispersing agent, 3%-5% of an anti-settling agent, 15%-25% of titanium dioxide, 10%-25% of glass powder and 5%-10% of talcum powder; the curing agent is prepared from 55.0 percent to 75.0 percent of HDI (Hexamethylene Diisocyanate) isocyanurate and 25.0 percent to 45.0 percent of butyl acetate; the diluent comprises the following components in percentage by weight: 60.0%-70.0% of butyl acetate, 15.0%-20.0% of ethyl acetate and 15.0%-25.0% of propylene glycol methyl ether acetate. The white primer has excellent hot water resistance, high-low temperature difference resistance, excellent adhesive force and relatively high hardness.

The utility model discloses a condenser for an esterification tower for butyl acetate production, which belongs to the technical field of butyl acetate production and comprises a bottom water tank, the left end and the right end of the top of the bottom water tank are fixedly connected with a top water tank through side supports, and a plurality of water outlet holes are formed in the bottom of the top water tank. A water outlet of the bottom water tank is connected with a top water tank through a water pump and a water pipe, and a plurality of groups of parallel coiled pipes are arranged in a space between the side supports on the two sides. And in cooperation with the top water tank spraying water from the top, cold water is sprayed outside the coiled pipe and blown by wind to evaporate and absorb part of heat, cold water exchanges heat and absorbs part of heat, and the heat dissipation effect is good.

The utility model discloses an esterification tower tail gas condenser for butyl acetate production, and belongs to the technical field of esterification tower tail gas condensation. Comprising a reaction tower, and a tail gas channel is arranged on the outer wall of the reaction tower. According to the esterification tower disclosed by the utility model, the cooling cavity II with the hollow arc-shaped plate, the perforated plate with the thin pipe and the cooling cavity I with the heat exchange calandria are matched with tail gas and cooling water to realize countercurrent non-contact heat dissipation, and the condensation effect of the tail gas of the esterification tower for producing butyl acetate is improved by utilizing multiple times of cooling; the tail gas of the esterification tower is condensed more thoroughly, and the process effect of condensing and recycling the tail gas of the esterification tower is improved; according to the tail gas condenser, the modularized cooling cavity I, the modularized cooling cavity II, the porous plate, the partition net I and the partition net II are matched with the limiting strip and the locking screw rod for locking, so that components in the tail gas condenser can be conveniently disassembled, overhaul and later maintenance of devices in the condenser are facilitated, and the condenser is more convenient to use.