326 results about "Ethyl acrylate" patented technology

The invention discloses a temperature / CO2 dual-response zwitterionic hydrogel profile control agent, which is prepared by taking a monomer A, a monomer B and a monomer C as raw materials, adding a cross-linking agent and an initiator, and carrying out polymerization reaction in a water medium. The monomer A is selected from any one of acrylamide, acrylic acid and 1-vinyl-2-pyrrolidone; the monomer B is selected from any one of [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide, 2-methacryloyloxyethyl phosphorylcholine and 3-((2-(methacryloyloxy) ethyl) dimethylamino) propionic acid inner salt; and the monomer C is selected from any one of 2-(dimethylamino) ethyl methacrylate, dimethylamino propyl methacrylamide and polyethyleneimine. The profile control agent has double swelling mechanisms, has outstanding temperature and salt resistance, resists 220000 mg / L of mineralization water, is suitable for high-salt reservoirs, and is good in long-term aging property.

The invention belongs to the technical field of thin film capacitors, and particularly relates to a chemical grafting modified polypropylene capacitor film material and a preparation method and application thereof. According to the preparation method of the chemical grafting modified polypropylene capacitor film material, provided by the invention, diethylenetriamine ethyl acrylate with a plurality of specific groups such as amino groups and carboxyl groups and unsaturated double bonds is synthesized through esterification reaction, and the diethylenetriamine ethyl acrylate is introduced into a polypropylene material through chemical grafting to obtain chemical grafting modified polypropylene; the prepared polypropylene capacitor film material has the excellent properties of good compatibility, difficulty in film breakage, capability of adsorbing and removing residual moisture, difficulty in oxidation corrosion, excellent breakdown resistance and the like, and the preparation method is a preparation method of the high-performance polypropylene capacitor film material; therefore, the technical problem that a polypropylene capacitor film material prepared in the prior art is low in performance is solved.

The invention relates to the field of plastic bags, and discloses a biodegradable plastic bag and a preparation method thereof, the biodegradable plastic bag comprises polylactic acid, poly (butylene adipate-co-terephthalate), a functional additive, modified starch, a lubricant and an antioxidant; the functional additive is prepared by grafting hydroxylated modified castor oil and isocyanated montmorillonite loaded titanium dioxide; the hydroxylation modified castor oil is prepared by modifying castor oil with chloroethyl isocyanate, then reacting with N-allylimidazole, and then reacting with 6-mercaptohexyl-1-alcohol; the isocyanated montmorillonite loaded titanium dioxide is prepared by reacting montmorillonite loaded titanium dioxide obtained by a sol-gel method with isophorone diisocyanate; the modified starch is prepared by reacting octadecanoyl chloride and acryloyl chloride with starch, then carrying out graft copolymerization with ethyl acrylate and further introducing glycidyl methacrylate, so that the plastic bag is endowed with excellent mechanical properties, biodegradability and antibacterial property.

The invention relates to the technical field of preparation of building materials, and discloses an ultra-high performance polycarboxylate superplasticizer for UHPC (Ultra High Performance Concrete). The superplasticizer composition comprises the following components in parts by weight: 20-30 parts of ethyl acrylate; 20 to 30 parts of sodium acrylate; the invention also provides a preparation method of the ultra-high performance polycarboxylate superplasticizer for UHPC, and the preparation method comprises the following steps: S1, raw material preparation: dissolving ethyl acrylate, sodium acrylate, sodium allylsulfonate, hexadecyl acrylate and diene peroxide in 50-100 parts of water to form a uniform solution; and S2, mixing and pre-polymerizing. By introducing nano silicon dioxide, an ultrasonic dispersion technology and a low-temperature vacuum dehydration technology, the dispersity and anti-permeability of the water reducing agent and the fluidity of concrete are improved, meanwhile, high strength is kept, and the problems that concrete is uneven in performance and poor in constructability are solved.

The invention discloses a UV-cured high-weather-resistance optical thin film and a preparation method thereof, and relates to the technical field of optical thin films. The optical film is prepared by taking polyethylene glycol terephthalate as a base material and coating the base material with a UV curing coating, and the UV curing coating comprises the following raw materials in parts by weight: 15-20 parts of aliphatic polyurethane acrylate, 5-8 parts of perfluorobutyl ethyl acrylate, 8-12 parts of hydroxyethyl acrylate, 6-10 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 2, 4-trimethyl-1, the invention relates to a UV (ultraviolet)-resistant coating which is prepared from the following raw materials in parts by weight: 1-2 parts of 2, 6-hexanediol diacrylate, 5-8 parts of trimethylolpropane triacrylate, 30-40 parts of modified epoxy acrylate, 1-2 parts of a silane coupling agent KH-570, 2-3 parts of a photoinitiator 1173, 0.5-1.2 parts of a modified ultraviolet absorbent UV-327, 0.8-1.5 parts of a hindered amine light stabilizer 540, 0.3-0.8 part of an antioxidant 1010, 0.09-0.12 part of an ultraviolet absorbent Tinuvin400 and 0.2-0.5 part of polyether modified polydimethylsiloxane. According to the UV-cured high-weather-resistance optical thin film, polyethylene glycol terephthalate is used as a base material, key raw materials such as a UV-cured coating with a scientific formula, modified epoxy acrylate and the like are finely prepared, a two-stage curing process is adopted, and the weather resistance is excellent.

The invention relates to the technical field of conveying belt preparation, and particularly discloses an acid-base-resistant heat-resistant aramid rope conveying belt and a preparation method thereof. An acid-alkali-resistant heat-resistant aramid rope conveying belt comprises an aramid cloth core layer, an upper covering rubber layer and a lower covering rubber layer, and the upper covering rubber layer and the lower covering rubber layer are made of the same acid-alkali-resistant heat-resistant rubber composition. The acid-alkali-resistant heat-resistant rubber composition is prepared from the following raw materials: ethylene propylene diene monomer, fluorinated silicone rubber, modified silicon carbide, carbon black, acid-alkali response type microcapsules, zinc oxide, stearic acid, an anti-aging agent, an accelerant and a vulcanizing agent, the modified silicon carbide is prepared by growing a mesoporous titanium dioxide layer on the surface of a silicon carbide nanowire through an atomic layer deposition technology; the wall material of the acid-base response type microcapsule is poly (2-vinylpyridine-co-ethyl acrylate), and the core material of the acid-base response type microcapsule is nano aluminum hydroxide and polydopamine. The conveying belt has excellent heat resistance and acid and alkali corrosion resistance, and can adapt to more complex and harsh material conveying environments.

The invention relates to the technical field of well drilling plugging agents, in particular to a high-strength consolidation type plugging agent. Comprising the following components in parts by weight: 30-68 parts of a polymer matrix, 15-36 parts of composite gel, 8-16 parts of a coagulator, 5-12 parts of an initiator, 7-12 parts of a nano material, 6-21 parts of a flexibilizer, 6-13 parts of a cross-linking agent and 2-8 parts of a flame retardant, the polymer matrix is prepared by taking ethyl acrylate and butyl acrylate as main monomers, methoxyethyl acrylate as a functional monomer and monobutyl itaconate as a vulcanization point monomer through copolymerization; the mass ratio of the ethyl acrylate to the butyl acrylate to the methoxyethyl acrylate to the monobutyl itaconate is (2-3): (1-2): (1-3): 1. The plugging agent has controllable curing time, is suitable for fractured and karst cave leakage layers, is high in plugging success rate, and can effectively improve the pressure-bearing capacity of stratums. And the plugging agent has good temperature resistance and is suitable for plugging construction in a high-temperature environment.

The invention relates to the technical field of synthesis of chemical products, in particular to a synthesis method of acryloyloxyethyl trimethyl ammonium chloride. According to the method, a one-pot reaction system is adopted, ethyl acrylate and N, N-dimethylaminoethanol are taken as raw materials and are subjected to quaternization reaction with chloromethane under an alkaline condition, and efficient conversion is realized through the synergistic effect of a composite catalytic system and a polymerization inhibitor. The composite catalyst is constructed by compounding magnetic nanoparticles and a metal organic framework material, forms a multilevel structure through titanate crosslinking, and has high catalytic activity and magnetic separation and recovery characteristics. The method simplifies the traditional step-by-step process, has the advantages of simple and convenient one-pot operation, recyclable catalyst, high raw material utilization rate, environmental friendliness and the like, and is suitable for large-scale preparation of acryloyloxyethyl trimethyl ammonium chloride.

The invention relates to transfer printing ink as well as a preparation method and application thereof, and belongs to the technical field of ink. The transfer printing ink comprises the following components: modified acrylic resin, a surfactant, a dye, a lubricant, other auxiliary agents and deionized water, the preparation method of the modified acrylic resin comprises the following steps: mixing acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, lauryl sodium sulfate, an initiator and deionized water, heating, adding an antibacterial agent, glycidyl methacrylate and absolute ethyl alcohol, and stirring at a constant temperature to obtain the modified acrylic resin. The prepared modified acrylic resin provides excellent dispersion stability for other components, so that the ink can keep stable flowability and viscosity for a long time, the problems of gelling, oil-water separation, thickening and the like are not easily generated, and the antibacterial property, hardness and adhesive force of the ink are remarkably improved; the water-based ink formed by mixing the components is ensured to have high film-forming hardness, remarkable antibacterial property and strong adhesive force to a base material.

The invention relates to the technical field of lithium ion battery diaphragms, in particular to a high-temperature-resistant modified acrylic acid composite material and a preparation method thereof. The high-temperature-resistant modified acrylic acid composite material comprises a polypropylene diaphragm and coating slurry coated on at least one side of the polypropylene diaphragm, the coating slurry is prepared from the following raw materials: n-butyl acrylate, methyl methacrylate, ethyl acrylate, toluene diisocynate, methacrylic anhydride, graphene oxide, nanoscale ceramic powder, polyvinylidene fluoride, vinyltriethoxysilane, polysiloxane, a dispersing agent, a catalyst and a solvent. According to the invention, high safety can be brought to the battery, high temperature resistance is realized, the diaphragm can tolerate high temperature, the service life of the battery is obviously prolonged, and the safety is greatly improved.

The invention discloses a high-strength acrylate rubber material and a preparation method thereof, and relates to the technical field of high polymer materials. When the high-strength acrylate rubber material is prepared, polyhydroxy imidazolium salt and phosphorus pentoxide react to prepare a functional flame retardant; reacting the pre-modified glass fiber with hydrazine hydrate to obtain modified glass fiber; the preparation method comprises the following steps: carrying out solution polymerization on ethyl acrylate, butyl acrylate, acryloxy propyl bis (trimethylsiloxy) methylsilane and glycidyl methacrylate to prepare acrylate raw rubber; the high-strength acrylate rubber material is prepared by uniformly mixing acrylate raw rubber, the modified glass fiber, a functional flame retardant and triphenyl phosphine, plastifying and thin-passing. The high-strength acrylate rubber material prepared by the invention has excellent flame-retardant, antibacterial, anti-aging and mechanical properties.

The invention provides light-cured 3D printing resin as well as a preparation method and application thereof, and relates to the technical field of 3D printing. The light-cured 3D printing resin is prepared from the following raw materials in parts by weight: 10 to 60 parts of multi-cured closed polyurethane acrylate, 10 to 40 parts of low-water-absorption resin, 10 to 50 parts of low-water-absorption monomer, 5 to 30 parts of chain extender and 1 to 4 parts of initiator, the multiple curing closed type polyurethane acrylate is polyurethane acrylate terminated by ethyl 3-(2-trimethylacetamido-3-pyridyl) acrylate, and the multiple curing closed type polyurethane acrylate is polyurethane acrylate terminated by ethyl 3-(2-trimethylacetamido-3-pyridyl) acrylate; the low-water-absorption resin comprises low-water-absorption acrylate resin and / or low-water-absorption methacrylate resin, and the water absorption is less than 2%; the low-water-absorption monomer comprises a low-water-absorption acrylate monomer and / or a low-water-absorption methacrylate monomer, and the water absorption is less than 2%. The photocuring 3D printing resin has the advantages of being excellent in mechanical property, low in viscosity and high in printing speed.

The invention relates to the technical field of optical transparent adhesives, and particularly discloses a flexible screen optical transparent adhesive film and a preparation method of the flexible screen optical transparent adhesive film. Comprising the following steps: mixing 2-ethylhexyl acrylate, 2-[2-[2-(2-hydroxyethoxy) ethoxy] ethoxy] ethyl acrylate, an acrylic acid short-chain prepolymer, a chain transfer agent and a photoinitiator, stirring, and performing ultraviolet irradiation to obtain an acrylic acid prepolymer; adding a coupling agent, a cross-linking agent, an antioxidant and a photoinitiator into the acrylic prepolymer, mixing, stirring, and carrying out vacuum defoaming to obtain a mixture; and filling the mixture between the release protective films and then carrying out ultraviolet curing. The flexible screen optical transparent adhesive film provided by the invention can meet low elastic modulus at normal temperature and low temperature, high peel strength at normal temperature and high temperature and excellent creep property, can balance the three components, can meet various requirements of flexible screen display equipment at the same time, and has a good application prospect.

The invention discloses a water-based acrylate antistatic coating as well as a preparation method and application thereof. Comprising the following steps: 1, mixing styrene, methyl methacrylate, butyl acrylate, ethyl acrylate, acrylic acid, lauryl sodium sulfate, a composite filler and deionized water, and carrying out high-speed shearing and pre-emulsification to form a monomer emulsion; 2, sodium bicarbonate, deionized water and ammonium persulfate are mixed, the temperature is increased to 75-80 DEG C, the monomer emulsion is slowly dropwise added, heat preservation is conducted for 1-2 h after dropwise adding is completed, the temperature is reduced to 40-50 DEG C, the pH is adjusted to 7-8, deionized water is added according to the volume ratio of 1: 1, and the waterborne acrylate antistatic coating is obtained. The preparation method has the beneficial effects that based on monomers such as styrene and methyl methacrylate, a composite filler is introduced to participate in emulsion polymerization, so that the waterborne acrylate antistatic coating is obtained; according to the method, the antistatic performance of the material is remarkably improved, and the mechanical strength and flame retardance of the material are effectively enhanced.

The invention belongs to the technical field of coating preparation, and provides a water-based biomass coating with a self-cleaning function and a preparation method of the water-based biomass coating. After lignin is subjected to alkali dissolution purification, acrylic anhydride modification and dopamine grafting, the lignin and soybean protein subjected to enzymolysis treatment are subjected to dopamine modification and glutaraldehyde cross-linking compounding to form modified lignin protein, the modified lignin protein is introduced into an acrylic monomer emulsion polymerization system to be copolymerized with ethyl acrylate and methyl methacrylate, and the modified lignin protein is obtained. The preparation method comprises the following steps: preparing a water-based acrylic copolymer emulsion, preparing a PDA-metal network and low-surface-energy particles at the same time, enabling the low-surface-energy particles to form a super-hydrophobic structure through an electrolyte layer and surface modification, compounding the water-based acrylic emulsion with chitosan-citrate, the PDA-metal network and the low-surface-energy particles, and adding a flatting agent and a defoaming agent to adjust the performance of the coating. The water-based biomass coating with the self-cleaning function is prepared.

The invention provides a preparation method of printing ink and a product thereof. According to the method, 2-(2-vinyloxyethoxy) ethyl acrylate and polyoxyethylene lauryl ether are adopted to improve the leakage resistance of the bottom-covering ink; the steady-state surface tension of the ink is set to be smaller than the surface tension of the ink holding part, and the ink use efficiency is improved by increasing the difference value between the two surfaces; the surface tension of the bottom layer ink is larger than that of the surface layer ink, so that the spreading capacity of the surface layer ink during superposition printing is improved; through deoxidation treatment, the jet stability of the ink is improved; 1, 2, 2, 6, 6-pentamethyl-4-piperidyl methacrylate is adopted, so that the storage stability of the ink is improved; surface layer ink and a carbonyl-containing printing medium are isolated through bottom covering ink, black scales are peeled off through N-cyclohexyl-2-pyrrolidone, and the light resistance of surface layer ink printed matter is improved.

The application relates to the field of decorative materials, in particular to a wear-resistant decorative paper and a preparation method thereof. The preparation method of the wear-resistant decorative paper comprises the following steps: coating wear-resistant paint on the surface of base paper to form a wear-resistant coating layer through drying treatment, so that the wear-resistant decorative paper is prepared; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate and methyl methacrylate, so that the wear-resistant paint has good adhesion; the wear-resistant paint is prepared by using divinylbenzene and styrene, so that the hardness and strength of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using vinyl silicone oil, so that the flexibility and water / oil repellency of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate, methyl methacrylate, divinylbenzene, styrene and vinyl silicone oil, so that the prepared wear-resistant decorative paper has excellent wear resistance.

The invention discloses a scale dissolving agent for rapidly dissolving wet-process phosphoric acid scaling substances as well as a preparation method and application of the scale dissolving agent, and belongs to the technical field of descaling. The scale dissolving agent comprises the following components in percentage by weight: 20-30% of a scale remover, 3-5% of a penetrating agent, 0.3-0.8% of a penetrating aid, 0.5-1% of a surfactant, 0.3-0.5% of a synergist and the balance of water, wherein the descaling agent comprises trisodium citrate dehydrate, sodium ethylene diamine tetracetate and ammonium fluoride; the penetrating agent is prepared from dioctyl sodium sulfosuccinate and perfluoroalkyl ethyl acrylate; the permeation auxiliary agent comprises disodium hydrogen phosphate and sodium carbonate; and the synergist is 1-ethyl-3-methylimidazolium acetate. The scale dissolving agent is specially used for dissolving wet-process phosphoric acid scaling substances and has the advantages of being high in scale dissolving speed, mild in reaction condition, low in formula cost and the like, the pH value of the scale dissolving agent is neutral and slightly alkalescent, and corrosion to production equipment is effectively avoided.

The invention provides a preparation method of a non-bulking waterproof moisture-permeable TPU film, and belongs to the technical field of TPU film preparation, and the preparation method of the non-bulking waterproof moisture-permeable TPU film comprises the following steps: stirring raw materials by a high-speed mixer for mechanical mixing; carrying out chemical reaction on the raw material, a divinylbenzene-ethyl acrylate-acrylamide copolymer and butylated hydroxytoluene, and adding tetrahydrofuran to adjust the viscosity of a reaction system, so as to obtain a TPU film material; heating, pressurizing and extruding the mixture through a screw extruder to form a film, plasticizing TPU particles into a semi-finished product, and filtering impurities and re-plasticizing on a filter of calendering equipment; carrying out annealing treatment, cooling in cold water, and pulling out the cooled TPU stretching film from a demolding opening of the demolding machine; the problems that an existing TPU film is poor in preparation size stability and prone to deformation can be solved.

The invention discloses an acrylic acid silane ester self-renewal antifouling resin based on cation-pi interaction as well as a preparation method and application of the acrylic acid silane ester self-renewal antifouling resin. Methyl methacrylate, ethyl acrylate, triisopropylsilyl methacrylate, acrylic acid-2-methyl ethyl ester, paeonol methacrylate and acryloyloxyethyl trimethyl ammonium chloride are synthesized through a random free radical polymerization reaction with azodiisobutyronitrile and benzoyl peroxide as initiators. Wherein the methacrylic acid paeonol ester monomer is prepared by carrying out substitution reaction on paeonol and methacryloyl chloride. The anti-fouling agent is anchored on the surface of the coating again through cation-pi interaction, so that the anti-fouling effect is enhanced, and the coating still has good anti-fouling capacity even in a static environment.

The invention provides a dispersing agent for positive electrode slurry of a lithium ion battery, a preparation method of the dispersing agent, the positive electrode slurry, a positive plate and the lithium ion battery, and relates to the technical field of lithium ion batteries. The dispersing agent for the lithium ion battery positive electrode slurry is a comb-shaped polymer, the comb-shaped polymer comprises a main chain and a side chain, the main chain is formed by 2-(dimethylamino) ethyl methacrylate and methacrylic acid, and the side chain is formed by methoxy polyethylene glycol methacrylate grafted by vinyl (C = C). Through detection and verification, the dispersant provided by the invention can effectively inhibit agglomeration and sedimentation of lithium iron phosphate in a water-based system, so that the uniformity and fluidity of slurry are improved, and a lithium ion battery positive pole piece is endowed with better compaction density and electrochemical performance.

The invention discloses a composition, a medicine and application of the medicine in tumor treatment, and relates to the technical field of tumor treatment. The composition comprises a methacrylic acid-ethyl acrylate copolymer and photosynthetic bacteria, wherein the photosynthetic bacteria are coated in the methacrylic acid-ethyl acrylate copolymer. According to the invention, not only are the problems of insufficient stability and low bioavailability of oral bacteria in vivo solved, but also intestinal-tumor immune cascade reaction and flora homeostatic reconstitution are realized through a multi-way action mechanism, and the preparation has an important clinical application prospect.

The invention discloses a preparation process and application of modified polymer-based oil polish, and the preparation process comprises the following steps: adding deionized water into a reactor, adding an emulsifier and modified silicon dioxide, adding part of methyl methacrylate, ethyl acrylate, butyl acrylate and acrylic acid, and uniformly stirring; adding an ammonium persulfate aqueous solution for reaction, dropwise adding the residual parts by mass of methyl methacrylate, ethyl acrylate, butyl acrylate and acrylic acid, heating for reaction after the dropwise addition of the monomer is completed, cooling to room temperature after the reaction is completed, and filtering to obtain a modified acrylate emulsion; uniformly mixing the modified acrylate emulsion, a flatting agent, a wetting agent, a coalescing agent, a defoaming agent and deionized water, and filtering to obtain the modified polymer-based oil polish. The oil polish disclosed by the invention has excellent leveling property, high glossiness and good wear resistance.

The invention relates to the technical field of preparation of printing ink, in particular to a preparation method of high-water-resistance printing ink, which comprises the following steps: taking 50-80 parts of self-crosslinking waterborne polyurethane resin, adding 3-8 parts of silane coupling agent and 2-5 parts of hydroxyl-terminated polydimethylsiloxane, stirring for 1.5-3 hours, adding 1-4 parts of amino modified nano silicon dioxide, and carrying out ultrasonic dispersion to obtain amphiphilic modified resin; adding 1-3 parts of a titanate coupling agent into 15-30 parts of pigment, stirring, and adding mica powder and a dispersing agent to obtain a core-shell pigment and filler dispersion liquid; adding 2-6 parts of perfluoroalkyl ethyl acrylate copolymer into 5-12 parts of polyvinylidene fluoride emulsion, stirring, and adding a defoaming agent and an ultraviolet absorbent to obtain an interpenetrating network functional aid solution; adding the pigment and filler dispersion liquid into the amphiphilic modified resin, stirring at 60-80 DEG C, introducing nitrogen, and adding the auxiliary liquid for cross-linking in batches; and dropwise adding a thickening agent, and filtering to obtain the high-water-resistance printing ink. The ink prepared by the invention is excellent in water resistance, and an ink layer is not easy to fall off and swell; the storage is stable and the viscosity change is small; the device adapts to multiple scenes, and is resistant to chemical corrosion and ultraviolet aging; and printing is smooth, film forming is uniform, environmental protection is achieved, and industrial production is facilitated.

The invention relates to a preparation method of 3-ethoxy isoamyl propionate, and belongs to the technical field of organic solvent synthesis. The preparation method of the 3-ethoxy isoamyl propionate comprises the following steps: S1, adding ethanol, a polymerization inhibitor and a catalyst A into a reaction kettle, heating to 40-55 DEG C, then dropwise adding ethyl acrylate, preserving heat, and carrying out addition reaction for 1-3 hours to obtain a reaction mixture; s2, adding an acidic material for neutralization, and carrying out vacuum rectification to obtain ethyl 3-ethoxypropionate; s3, adding ethyl 3-ethoxypropionate and a catalyst B into a reaction kettle, heating to 100-120 DEG C, introducing isoamyl alcohol, controlling the reaction temperature to 100-115 DEG C, and carrying out transesterification for 2.5-4 hours to obtain a crude product; and S4, cooling to stop the reaction, separating to remove the catalyst B, and carrying out reduced pressure rectification on the obtained crude product to obtain the 3-ethoxypropionic acid isoamyl ester. The method has the effects of mild process, high conversion rate and high product yield.

The invention belongs to the technical field of organic synthesis, and particularly relates to a synthesis method of an isoxazoline compound. The preparation method comprises the following steps: dissolving a compound 1 and ethyl acrylate in dichloroethane, then adding tert-butyl nitrite, alkali and K2S2O8, in an air environment, irradiating with a 35 W blue LED light source and stirring at room temperature for 12 hours, after the reaction is completed, reducing pressure to remove a solvent, and then performing silica gel column chromatography on a crude product to obtain a product, namely the isoxazoline compound. The synthesis method provided by the invention avoids the problem of residue of a traditional metal catalyst, and provides a new normal form for green synthesis of the isoxazoline compound. As a key intermediate, isoxazoline can derive beta-lactam, beta-amino alcohol and other structures, and a new path is provided for complex molecule synthesis.

The invention discloses a boiler deashing and decoking agent, and belongs to the field of boiler deashing and decoking. Comprising the following substances in parts by weight: 15-20 parts of sodium carbonate, 5-10 parts of sodium sulfate, 20-25 parts of potassium hydroxide, 12-16 parts of 8-hydroxyquinoline sulfate, 10-15 parts of modified nano silicon dioxide, 1-2 parts of polyvinylpyrrolidone, 3-5 parts of potassium chlorate, 2-6 parts of sodium lignin sulfonate, 3-5 parts of polyoxypropylene triol, 2-4 parts of an ethyl acrylate-acrylonitrile copolymer and 20-30 parts of modified calcium carbonate. The modified nano silicon dioxide can be uniformly dispersed in the medicament by virtue of nano-scale particle size and surface modification treatment, so that the contact area with deposited ash and coke blocks is increased, and the removal efficiency is improved; the polyvinylpyrrolidone is helpful for keeping the components in a good dispersion state in the use process, and agglomeration is avoided; and through the synergistic effect of all the raw materials, a good ash removal and decoking effect can be achieved, so that normal use of the boiler is ensured.

The invention belongs to the technical field of lubricating oil additives, and particularly relates to an anti-foaming agent and a preparation method and application thereof. The anti-foaming agent provided by the invention is a copolymer of a monomer 1 and a monomer 2, the monomer 1 comprises 2-ethylhexyl acrylate, and the monomer 2 comprises one or two of ethyl acrylate, styrene and butyl acrylate. The anti-foaming agent provided by the invention has good thermal stability and can adapt to long-term use in a higher-temperature environment; meanwhile, the anti-foaming agent provided by the invention has good compatibility with mineral oil, synthetic oil and other oil substances, and can be uniformly dispersed in lubricating oil. The anti-foaming agent provided by the invention has an excellent anti-foaming effect when being used in high-viscosity lubricating oil.

The invention discloses a stretchable imidazole polyethylene electron transport material as well as a preparation method and application thereof, and belongs to the technical field of organic photoelectric materials. The stretchable imidazole polyethylene electron transport material is obtained by taking polyethylene glycol methacrylate, 2-(butylamino) carbonyl oxo ethyl acrylate and an electron transport material structural unit as raw materials in a free radical polymerization mode under the condition of an organic solvent and an initiator. According to the invention, an electron transport material structural unit is introduced into the intrinsic stretchable elastomer in a chemical cross-linking manner, so that the stretchability and photoelectric properties of the elastomer are well balanced. The stretchable imidazole polyethylene electron transport material can be used as an electron transport layer material to prepare an electroluminescent device with high stretchability, high efficiency and high stability, and can be applied to the fields of flexible display, sensing detection, wearable electronic equipment and the like.

The invention belongs to the technical field of angiographic contrast agents, and particularly relates to an angiographic contrast agent for corpses and a preparation method of the angiographic contrast agent. The angiographic contrast agent for the corpse is prepared from the following components in parts by mass: 20 to 35 parts of iodine-containing polymer, 30 to 50 parts of iodo-benzene ring compound, 90 to 150 parts of glycerol triacetate, 30 to 40 parts of dimer acid and 600 to 800 parts of liquid paraffin, the iodine-containing polymer is obtained by copolymerizing (methyl) C4-6 alkyl acrylate, polyethylene glycol diacrylate and an iodine-containing monomer, and the iodine-containing monomer is selected from at least one of 3-iodine-ethyl acrylate, 3-iodine-methyl acrylate and (methyl) iodobenzyl acrylate. The blood vessel contrast agent disclosed by the invention can realize an excellent blood vessel contrast effect on a corpse, can also obtain a relatively ideal contrast effect for a corpse with relatively long death time, and provides powerful support for the corpse work.