249 results about "N-Butyl acetate" patented technology

The invention discloses a preparation method of 3, 4-difluoro-2-methoxyphenylacetic acid, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: reacting 2, 3-difluorophenol with 3, 4-dihydropyran under the action of sulfonic acid resin to generate an intermediate 2-(2, 3-difluorophenoxy) pyran; then lithiating, reacting with tert-butyl 2-bromoacetate, and performing acidolysis to obtain a 3, 4-difluoro-2-hydroxyphenylacetic acid intermediate; and finally reacting with a methylation reagent in the presence of alkali to generate the target compound 3, 4-difluoro-2-methoxyphenylacetic acid. The preparation method has the advantages that the route is overall reasonable, the preparation method comprises three steps, and a simple and effective new route is provided for the preparation of the 3, 4-difluoro-2-methoxyphenylacetic acid.

The invention discloses an amorolfine hydrochloride liniment and a production process. The formula of the amorolfine hydrochloride liniment comprises amorolfine hydrochloride, ethanol, propylene glycol, polyethylene glycol, acrylic resin RL100, glyceryl triacetate, ethyl acetate and butyl acetate. The preparation method comprises the following steps: 1, selecting a solvent material; step 2, generation of an amorolfine raw material; step 3, synthesizing amorolfine hydrochloride; step 4, preparation of the liniment; step 5, quality control; and step 6, packaging and storing. The amorolfine hydrochloride liniment based on the acrylic resin RL100 as the coating and framework material is designed, the specific release requirement of the medicine can be effectively met, ultraviolet rays can be absorbed, erosion of the ultraviolet rays can be effectively resisted, and the service life of the medicine is prolonged; meanwhile, the propylene glycol component is added, so that the stability and solubility of the medicine and the permeability of the medicine are improved; the polyethylene glycol component is also added, so that the smearing property and the use experience of the medicine can be improved.

The invention discloses a method for removing oligomers on the surface of a polyester fiber product, which comprises the following steps: adding the polyester fiber product into water, adding 0.1-10g of nonionic surfactant with the HLB (Hydrophile-Lipophile Balance) value of less than 10 according to 1L of water, cleaning for 5-30 minutes at 15-60 DEG C, then discharging liquid, adding the polyester fiber product into a non-aqueous medium, cleaning for 5-15 minutes at 15-50 DEG C, then discharging liquid, washing for 5-15 minutes at 15-50 DEG C, and drying to obtain the polyester fiber product. The non-aqueous medium is selected from at least one of tetrachloroethylene, n-butyl acetate, gamma-butyrolactone, epsilon-caprolactone and 1, 4-dioxane; and taking out the cleaned polyester fiber product, and putting the polyester fiber product into a dryer provided with a condensation recovery device for sealed drying. Experiments prove that the method not only can effectively remove the oligomer on the surface of the polyester fiber product, but also is simple to operate and easy to realize large-scale production, and has the advantages of low cost, high efficiency, environmental protection and the like, and the waste liquid can be recycled.

The invention discloses a modified radix asparagi polyurea intermediate paint for a hydroelectric dam steel gate as well as a preparation method and application thereof. The intermediate paint is prepared by mixing a component A and a component B according to a mass ratio of (3-5): 1; the component A comprises epoxy modified polyaspartic acid ester resin A, epoxy modified polyaspartic acid ester resin B, pigment, filler, a mixed solvent, a dispersing agent, a defoaming agent and a rheological additive; and the component B comprises an isocyanate mixture, a reactive diluent PEC and butyl acetate. The invention further discloses the preparation method of the modified polyaspartic polyurea intermediate paint for the hydroelectric dam steel gate. The modified radix asparagi polyurea intermediate paint for the hydroelectric dam steel gate is low in odor, the construction solid content is larger than 90%, the modified radix asparagi polyurea intermediate paint belongs to an environment-friendly green product, compared with an existing common thick-build epoxy intermediate paint, the drying speed is high, the ultraviolet aging resistance is good, the all-weather construction requirement of the wet-on-wet spraying technology can be met, and therefore the construction efficiency is greatly improved, and the construction cost is reduced. And a formed paint film is good in drawing adhesive force and excellent in mechanical property.

The invention discloses a printing antistatic polyester release film and a preparation method thereof, the release film is composed of a PET base film and a release agent layer firmly combined with the PET base film, the PET base film is formed by blending, melting, extruding and stretching PET particles added with a composite additive, and the release agent layer is formed by curing a release agent; wherein the composite additive is prepared from polyvinylpyrrolidone, graphene oxide, 3-aminopropyl triethoxy silane and polyvinyl butyral. The release agent is prepared from a polydimethylsiloxane-amino siloxane copolymer, fluorosiloxane resin, a quaternary ammonium salt type antistatic agent, isocyanate silane and a mixture of butyl acetate and methylbenzene. The composite additive provided by the invention not only can provide stable antistatic performance when being added, but also can further enhance the printing performance and the surface activity of the PET base film in the subsequent plasma treatment process, so that the composite additive is suitable for applications such as electronic product packaging, labels and the like which have high requirements on static electricity and printing performance.

A wafer end protective-film forming composition for semiconductor manufacturing including: a polymer or compound having a crosslinkable group, and a solvent, wherein the solvent contains a first solvent and a second solvent, and when an evaporation rate of n-butyl acetate is 1, an evaporation rate of the first solvent is 0.10 or more and an evaporation rate of the second solvent is 0.05 or less.

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 invention provides a self-repairing scratch-resistant coating, a PVC decorative film and a preparation method of the PVC decorative film, and relates to the technical field of decorative films. The self-repairing scratch-resistant coating provided by the invention comprises flexible polyurethane acrylate, modified epoxy acrylate, a reactive diluent, a photoinitiator, a siloxane microcapsule repairing agent, a dynamic cross-linking agent, a flatting agent, an anti-fingerprint agent and butyl acetate. The coating can be efficiently repaired, meanwhile, the toughness of the coating can be improved through the flexible polyurethane acrylate, secondary damage after repairing is avoided, and the purpose of synergism of scratch resistance and self-repairing is achieved. The PVC decorative film provided by the invention adopts the self-repairing scratch-resistant coating, so that the surface hardness is improved, the scratch resistance is enhanced, and a scratch self-repairing technology is added, so that scratches are reversible, and the service life is prolonged.

The invention relates to a polyurethane adhesive as well as a preparation method and application thereof. The adhesive is prepared from the following raw materials in percentage by weight: 35 to 65 weight percent of composite polyether polyol, 14 to 25 weight percent of polyisocyanate, 1 to 5 weight percent of hydrophilic chain extender, 1 to 5 weight percent of micromolecule chain extender, 0.05 to 3 weight percent of catalyst, 0.5 to 4 weight percent of neutralizer, 1 to 7 weight percent of end-capping reagent, 1 to 8 weight percent of silane coupling agent, 2 to 12 weight percent of mesoporous microsphere, 2 to 5 weight percent of isopropanol, 2 to 5 weight percent of butyl acetate, 0.2 to 4 weight percent of defoaming agent and the balance of water, wherein the composite polyether polyol is a composition of Mannich polyether polyol and flexible foam polyether polyol in a mass ratio of 1: (0.5-1); the adhesive disclosed by the invention can replace hot melt adhesive powder in garment pyrography, can improve the softness, air permeability, friction resistance and soaping-resistant color fastness of fabric pyrography printing, and can obviously reduce the film-forming drying and curing temperature of the adhesive at the same time.

The invention discloses a yellowing-resistant and aging-resistant polyurethane resin coating material and a preparation method thereof, and belongs to the technical field of polyurethane resin coating materials, and comprises the following raw materials by weight: 80-100 parts of polyether polyols, 60-80 parts of diisocyanates, 50-70 parts of butyl acetate, 5-8 parts of modified titanium dioxide, 1-2 parts of defoamers, 12-18 parts of chain extenders, 0.2-0.4 parts of ultraviolet light absorbers, and 0.1-0.2 parts of stannous octoate. The coating material is mainly made of polyether polyether and aliphatic diisocyanates, and the aliphatic diisocyanates do not contain benzene rings, thereby improving the yellowing resistance of the polyurethane resin coating material, and adding ultraviolet light absorbers and modified titanium dioxide at the same time, titanium dioxide has extremely strong ultraviolet absorption and infrared reflection characteristics, and the ultraviolet light absorber can release ultraviolet radiation in the form of heat, and the two act synergistically, and can significantly improve the anti-ultraviolet ability of the polyurethane resin coating material, thereby effectively improving the yellowing resistance and aging resistance of the polyurethane material.

The invention relates to a self-crosslinking high-temperature-resistant chloroprene rubber adhesive as well as a preparation method and application thereof. The invention relates to a self-crosslinking high-temperature-resistant chloroprene rubber adhesive. Comprising 2 to 4 parts by weight of methacrylic acid, 10 to 13 parts by weight of methyl methacrylate, 30 to 35 parts by weight of butanone, 0.4 to 0.6 part by weight of active magnesium oxide, 3 to 6 parts by weight of tert-butyl phenolic resin, 8 to 12 parts by weight of sec-butyl acetate, 12 to 15 parts by weight of chloroprene rubber, 0.1 to 0.2 part by weight of benzoyl peroxide and 24 to 28 parts by weight of toluene. The chloroprene rubber adhesive with the heat-resistant temperature of 100 DEG C or above is formed. The resin may improve characteristic adhesion and self-adhesion while increasing heat resistant cohesive strength.

The invention discloses 1K varnish as well as a preparation method and a spraying method thereof, relates to the technical field of automobile coating varnish, and solves the problems that the existing 1K varnish is difficult to be matched with a water-based colored paint system and is poor in performance. Comprising acrylic polyol, a thermosetting hydroxylated acrylic copolymer solution, thermosetting hydroxylated acrylic resin, polycarbonate diol, amino resin, blocked isocyanate resin, a leveling agent, a catalyst, an aging aid, a wetting dispersant and a solvent. The amino resin comprises butylated amino resin and a trifunctional melamine cross-linking agent; bYK306 and BYK358N are used as the flatting agents; the catalyst comprises an acid catalyst and a metal catalyst; the aging auxiliary agent comprises an ultraviolet light absorber 80 and a light stabilizer uv-93; the wetting dispersant is BYK-161; the solvent is prepared from butyl acetate, DBE, ethyl ethoxypropionate, ethylene glycol butyl ether acetate and n-butyl alcohol. The method is suitable for being matched with a water-based production line and is wide in applicability.

The invention discloses a printing coating for a color-coated aluminum plate and a preparation method of the printing coating, and belongs to the technical field of color-coated aluminum plate coatings. The coating comprises the following components: fluorocarbon resin, modified polyester resin, an HDI tripolymer curing agent, flake mica powder, nano # imgabs0 #, an inorganic pigment, an ultraviolet light absorber, a hindered amine light stabilizer, an organosilicon leveling agent, nano cerium oxide, a mixed solvent of xylene and butyl acetate, and a silane coupling agent. The preparation method of the coating comprises the following steps: S1, preparing the modified polyester resin; s2, pretreating the raw materials; s3, preparing main slurry of the coating; and S4, adding an auxiliary agent to prepare the printing paint for the color-coated aluminum plate. Nano cerium oxide and fluorocarbon resin cooperate, cerium oxide neutralizes free radicals, and # imgabs 1 # and # imgabs 2 # are cyclically generated, so that resin degradation is inhibited, and the absorption effect on ultraviolet rays is further improved; a vacuum defoaming process and ultrasonic dispersion are adopted, so that gaps of the coating are reduced, and the corrosion resistance of the coating is enhanced.

The present invention discloses a glass ceramic metallization UV vacuum plating coating and a preparation process thereof, and relates to the technical field of coatings, the glass ceramic metallization UV vacuum plating coating comprises the following components by mass: 5-20 parts of a 2-functional special modified epoxy acrylate resin, 5-10 parts of a 2-functional aliphatic polyurethane acrylate resin, 2-5 parts of a 6-functional aliphatic polyurethane acrylate resin, 5-15 parts of a polyester acrylic resin, 5-10 parts of an acrylic resin, and the balance of a solvent. The coating is prepared from the following components in parts by weight: 10 to 13 parts of trifunctional acrylate monomer, 2 to 5 parts of monofunctional acrylate monomer, 1 to 3 parts of phosphate, 2 to 5 parts of 1-hydroxycyclohexyl phenyl ketone, 0.5 to 2 parts of benzoin dimethyl ether, 0.1 to 0.3 part of flatting agent, 20 to 30 parts of ethyl acetate, 10 to 20 parts of butyl acetate and 5 to 10 parts of propylene glycol methyl ether acetate. The epoxy acrylate oligomer, the aliphatic polyurethane acrylate and the polyester acrylate which are high in performance and mature in process are mainly selected as main film forming substances and are good in miscibility, a cured paint film is high in compactness and good in developability, and a trifunctional acrylate monomer is matched and is high in reactivity, so that the film forming effect is good. The high crosslinking density ensures that a paint film has enough brightness and fullness so as to ensure the physical and chemical properties of a product, and meanwhile, the constructability such as a leveling effect is improved.

This invention discloses a mother-of-pearl varnish for wood products with high resistance to yellowing and high transparency, and its application. It consists of a main agent, a curing agent, and a diluent in a mass ratio of 100:(40-60):(10-20). The main agent includes: 40%-50% aldehyde-ketone resin, 0.1%-0.5% defoamer, 5%-10% liquid metallic pearlescent pigment, 1%-2% ultraviolet absorber, and 40%-50% diluent. The curing agent includes: 20%-30% HDI trimer isocyanate, 25%-35% isocyanate adduct, 30%-50% n-butyl acetate, 0-15% ethyl acetate and / or propylene glycol methyl ether acetate, and 0.1%-0.5% dehydrating agent. The product of this invention exhibits excellent resistance to yellowing, good film transparency, high brightness, strong shimmer, and a strong three-dimensional effect. It can be widely used for surface coating of wood products such as wardrobes, kitchen cabinets, bathroom cabinets, and display cases.

The invention discloses chlorinated polypropylene modified water-based acrylic resin with high adhesive force and water resistance and a preparation method of the chlorinated polypropylene modified water-based acrylic resin. The chlorinated polypropylene modified water-based acrylic resin is prepared from the following components in percentage by mass: 5-15% of chlorinated polypropylene, 20-30% of methyl methacrylate, 5-10% of isobornyl acrylate, 10-15% of methoxy polyethylene glycol monomethacrylate, 3-5% of acrylic acid, 0.5-1.5% of an initiator and 2-5% of hydroxyethyl acrylate. The cleaning agent is prepared from the following components in percentage by weight: 20-40% of triethanolamine, 3-8% of triethanolamine, 5-10% of acetone, 20-40% of sec-butyl acetate and 1-5% of deionized water. The optimal raw material composition and proportion are screened through a large number of experiments, the optimal synthesis process is preferably obtained through a large number of experiments, the conversion rate reaches up to 99%, and the solid content of the resin reaches 65% or above. The chlorinated polypropylene modified water-based acrylic resin with high adhesive force and water resistance has the advantages of excellent adhesive force, water resistance, storage stability and the like, and has a very good technical effect in comprehensive performance.

The application belongs to the technical field of medicine synthesis, and particularly relates to a preparation method of methoxychlorpromazine monohydrochloride monohydrate. The method comprises the following steps: step 1, methoxychlorpromazine base is dissolved in a polar solvent, and hydrochloric acid is added to obtain a mixed solution; step 2, a poor solvent of methoxychlorpromazine monohydrochloride monohydrate is added to the mixed solution, crystallization is carried out, and separation is performed, and methoxychlorpromazine monohydrochloride monohydrate is obtained; the poor solvent is selected from one or a mixture of two or more of isopropyl alcohol, n-butyl alcohol, acetone, butanone, ethyl acetate, butyl acetate, dichloromethane, trichloromethane, toluene, methyl tert-butyl ether, isopropyl ether and diethyl ether. The method has the advantages of simple process, good repeatability, easy operation, high yield, product purity of more than 99.8%, complete compliance with the requirements of European Pharmacopoeia 9.0 and US Pharmacopoeia USP43, and suitability for industrial production.

The invention discloses a synthesis method of 4-amino-N-tert-butylbenzamide, which comprises the following steps: by taking p-aminobenzonitrile and tert-butyl acetate as initial raw materials, carrying out Ritter reaction in an acidic system to prepare the 4-amino-N-tert-butylbenzamide in one step; the acidic system is composed of an acidic solvent and an acidic catalyst; the acidic solvent is acetic acid; the acid catalyst is p-toluenesulfonic acid or sulfuric acid. The method provided by the invention not only solves the problem that the tert-butylamine and other raw materials with pungent smell need to be adopted in the prior art and are not friendly to human bodies and environment, but also avoids the problems of low safety caused by a high-risk process and high production cost caused by the need of adopting an expensive palladium catalyst in the prior art; particularly, the method is short in reaction step, simpler and more convenient to operate, more stable in process and suitable for large-scale industrial production.

The invention discloses a hand brushing and spraying dual-purpose odorless anti-yellowing transparent polyurethane primer suitable for various base materials and a preparation method thereof. The primer mainly comprises a component A, a component B and a component C, the component A is mainly prepared from odorless coconut oil alkyd resin, zinc stearate, a defoaming agent, a flatting agent, an anti-settling agent, functional resin and an organic solvent; the component B is mainly prepared from an HDI (hexamethylene diisocyanate) tripolymer, a TDI (toluene diisocynate) tripolymer, a dehydrating solvent and a dehydrating agent; the component C is mainly prepared from dimethyl carbonate, n-butyl acetate and propylene glycol methyl ether acetate; the anti-settling agent is a mixed solution of polyamide wax slurry 6900-20X and n-butyl acetate, and the mass concentration of the polyamide wax slurry 6900-20X in the mixed solution is 40%; the functional resin is a mixed solution of cellulose acetate butyrate CAB-381-0.5 and n-butyl acetate, and the mass concentration of the cellulose acetate butyrate CAB-381-0.5 in the mixed solution is 20%. The odorless yellowing-resistant transparent polyurethane primer has the advantages of no blistering, no prickly heat, suitability for various base materials, dual purposes of hand brushing and spraying, and the like.

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 utility model is applicable to the technical field of tert-butyl acetate preparation, and discloses a tert-butyl acetate preparation device which is characterized in that a fixed pipe is fixedly communicated between the bottoms of two groups of corrugated hoses, a discharge pipe is mounted at the bottom of the fixed pipe, a mounting frame is fixedly sleeved on the outer side surface of the fixed pipe, and a servo motor is fixedly mounted on the bottom surface of the mounting frame; the bottom surface of a transmission shaft of the servo motor is fixedly sleeved with a transmission gear through a coupler, a transmission gear ring is fixedly installed on the top surface of the discharging pipe, the outer side of the transmission gear is meshed with the inner side of the transmission gear ring, the bottom of the fixing pipe and the middle end of the top of the discharging pipe fixedly communicate with connecting pipes, and a rotating connector fixedly communicates between the side edges of the two connecting pipes. According to the technical scheme provided by the utility model, the spraying nozzle can be used for rotatably discharging the lewis acid raw material when the lewis acid raw material is fed and discharged, so that the lewis acid raw material can be fed to different positions of the material plane of the material mixing frame, the contact area of various mixed materials is increased, and the reaction rate of the mixed materials is improved.

A positive photosensitive resin composition for a low-temperature process includes an alkali-soluble phenolic resin, a compound with quinonediazide group, a mixed solvent and at least one additive. The mixed solvent includes a first solvent and a second solvent. The first solvent has a volatilization rate of more than 50 relative to a volatilization rate of butyl acetate of 100, and the second solvent has a boiling point between 150° C. and 200° C. The at least one additive has a molecular weight of 500-5000 and a structural unit as Formula (I), wherein R1 is selected from a group consisting of hydrogen, hydroxyl group, C1-C5 alkyl group, phenyl group, halogen atoms and cyano group, R2 is selected from a group consisting of hydrogen, acid radical, benzene and derivatives thereof, phenols, benzoic acid and derivatives thereof and aromatic heterocycles, and n is 10-80. It is also provided a method for preparing a photoresist film

The present invention belongs to the field of chemical coatings, and in particular to a polyurethane net odor high-transparency full matte skin feeling clear surface coating material and preparation method. The material is prepared by evenly allocating a main agent, a curing agent and a diluent by weight ratio; by weight, the main agent is prepared by the following raw materials: 35-55 parts of alkyd resin, 10-25 parts of adipic acid polyester polyol resin, 1-10 parts of butyl acetate, 3-8 parts of ethyl acetate, 5-20 parts of nitrocellulose, 7-15 parts of organic matting powder, 0.1-0.5 parts of defoaming agent, 0.3-1 parts of dispersant, 1-5 parts of anti-settling agent and 0.1-0.5 parts of leveling agent. The present invention is based on adipic acid polyester polyol resin as the main body, and the skin feeling effect achieved by collocation of part of the leveling agent is better and more unique than conventional clear topcoat feel, and the skin feeling effect is permanent, and adipic acid polyester can also react with alkyd resin to form a tight three-dimensional grid structure, thereby improving the adhesion and chemical resistance of the coating.

The utility model discloses a butyl acetate recovery and reuse device, comprising a machine body, a raw material injection pipe arranged at one side of the upper end of the machine body, and a recovery cylinder arranged at one side of the machine body and used for recovering butyl acetate, the top of the machine body is detachably connected with a sealing cover, the top of the recovery cylinder is interconnected with a material receiving pipe, and the other end of the material receiving pipe penetrates the upper end of the sealing cover and extends to the inside of the machine body, the inner cavity of the recovery cylinder is provided with a recovery cavity and a cooling cavity, and a serpentine cooling pipe is arranged inside the cooling cavity; the utility model can realize rapid cooling of butyl acetate during recovery by arranging a cooling structure, solves the problem that the temperature of the existing butyl acetate is continuously increased during the recovery process and the recovery efficiency is reduced, and effectively improves the recovery rate of butyl acetate.

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 invention provides an on-rust coating as well as a preparation method and a use method thereof, and particularly relates to the technical field of coatings. The rusted coating comprises a first component and a second component, wherein the first component comprises the following raw materials in parts by weight: 9-14 parts of demineralized water, 0.01-0.05 part of a surfactant, 40-50 parts of an acrylic emulsion, 3-6 parts of a penetrant, 4-8 parts of a rust conversion agent and 0.1-0.5 part of a coalescing agent; the second component comprises the following raw materials in parts by weight: 1-2 parts of demineralized water, 1-2 parts of ethanol, 1-2 parts of a complexing agent, 3-7 parts of butyl acetate, 5-10 parts of polyurethane and 5-10 parts of zinc powder; the first component and the second component cooperate with each other to achieve efficient and reliable protection of the rusted steel structure.

The invention discloses a PU (polyurethane) anti-scratch self-repairing ultra-matte transparent finish paint and a preparation method thereof. The PU anti-scratch self-repairing ultra-matte transparent finish paint comprises a component A and a component B, the component A comprises the following raw materials: polycarbonate resin; a wetting dispersant; a leveling agent; a defoaming agent; xylene; matt powder; ethyl acetate; propylene glycol methyl ether acetate; n-butyl acetate; the component B comprises the following raw materials: an HDI curing agent; the PU anti-scratch self-repairing ultra-matte transparent finish paint is glossy, ultra-matte, free of fingernail scratch and excellent in scratch resistance.

The invention discloses a resource utilization system and method for acetic acid-containing wastewater in acrylic acid production, which are used for resource utilization of a large amount of acetic acid-containing wastewater generated in industrial production of acrylic acid through cooperation of multiple working sections. Acetic acid and acrylic acid contained in the wastewater are separated and synthesized to obtain 99.5 wt% butyl acetate and 50 wt% sodium polyacrylate aqueous solution products. The method has the advantages of low equipment investment cost, flexible production, continuous process, long reaction retention time, wide available concentration range of acetic acid and acrylic acid raw materials, high conversion per pass of n-butyl alcohol, environmental friendliness and the like.

The invention relates to the technical field of high polymer material synthesis, and particularly discloses hydrophobic fluorosilicone microgel and a preparation method thereof. The invention relates to a high-temperature-resistant acrylic resin, which is prepared from the following ingredients in parts by weight: 3.54 to 8.96 parts of perfluorooctyl ethyl acrylate, 0.96 to 4.05 parts of functional ingredients, 2.94 to 9.99 parts of methyl acrylate, 4.48 to 11.09 parts of butyl acrylate, 1.01 to 2.56 parts of trimethylolpropane triacrylate, 0.39 to 0.99 part of azodiisobutyronitrile and 65.0 to 85.0 parts of butyl acetate. According to the hydrophobic fluorosilicone microgel and the preparation method thereof, a coating can be endowed with good hardness and wear resistance, a fluorocarbon chain segment is introduced, the coating can be endowed with good anti-fouling and anti-fingerprint performance, functional components (isocyanate active functional groups or siloxane active groups) are introduced, the coating can be endowed with excellent adhesive force to a base material, and the hydrophobic fluorosilicone microgel can be applied to the coating. The contradiction between the antifouling property and the adhesive force is balanced.

The utility model relates to a production system for improving the utilization rate of butyl acetate esterification reaction raw materials. The raw material preheater is communicated with the esterification reboiler, the esterification reboiler is communicated with the esterification kettle, a discharge port of the esterification kettle is communicated with a feed port of the sulfuric acid trap, and a discharge port of the sulfuric acid trap is communicated with a feed port of the esterification tower; a discharge port of the esterification tower is communicated with a feed port of the tower top condenser, a discharge port of the tower top condenser is communicated with a feed port of the oil-water layering tank, and oil phase and water phase discharge ports of the oil-water layering tank are communicated with a reflux inlet in the top of the esterification tower; a water phase discharge port of the oil-water layering tank is communicated with a feed port of the stripping tower, and a gas phase port of the stripping tower is communicated with the esterification tower. The device disclosed by the utility model has the advantages that the catalyst entrained in the gas phase of the esterification kettle is separated and recycled through the sulfuric acid trap, so that the catalyst is prevented from being lost, the esterification reaction is promoted to move towards the positive direction, and the utilization conversion rate of raw materials is improved; materials dissolved in a water phase are recycled through the stripping tower, so that the loss of the materials is avoided, and the utilization conversion rate of the raw materials is increased to the maximum extent.