279 results about "Phthalic anhydride" patented technology

The invention belongs to the field of alkyd resin, and particularly relates to alkyd resin with high adhesive force and a preparation method thereof. The high-adhesion alkyd resin is prepared from soya oil acid, a nitrogen-containing heterocyclic compound, phthalic anhydride, pentaerythritol and hydroxyl-terminated polydimethylsiloxane. By introducing a nitrogen-containing heterocyclic compound (such as quinoline and triazole) and hydroxyl-terminated polydimethylsiloxane (PDMS), the molecular structure of the alkyd resin is remarkably optimized, so that the alkyd resin is superior to the traditional alkyd resin in the aspects of heat resistance, corrosion resistance, mechanical strength, adhesive force, construction performance and the like. The coating is suitable for the fields of high-temperature anticorrosive coatings, marine coatings, industrial protective coatings and the like, and shows remarkable technical advantages and wide market prospects.

The invention discloses lighting resin as well as a preparation method and application thereof, and belongs to the technical field of lighting type unsaturated polyester resin. Comprising the following components: ethylene glycol, benzoic acid, phthalic anhydride, maleic anhydride, an antioxidant, a defoaming agent, a surfactant, a stabilizer, styrene, a solvent, a first polymerization inhibitor, a second polymerization inhibitor and a third polymerization inhibitor. The alcohol-acid ratio is (1.03-1.13): 1; the molar ratio of unsaturated acid to saturated acid is (2.5-3.5): 1; the mass ratio of benzoic acid to the surfactant is (26.8-44): 1; the preparation method comprises the following steps: 1) reacting ethylene glycol, maleic anhydride, phthalic anhydride, benzoic acid, an antioxidant and a first polymerization inhibitor; the preparation method comprises the following steps of (1) adding a first polymerization inhibitor, (2) heating and preserving heat after the reaction is completed, and (3) cooling, adding a second polymerization inhibitor, cooling, adding a third polymerization inhibitor, a cross-linking agent, a surfactant and a defoaming agent, and adding a solvent to obtain the daylighting resin.According to the preparation method, the surfactant and benzoic acid have a synergistic effect, so that the compatibility of polyester and the cross-linking agent is improved.

The invention relates to rosin modified resin and a preparation process thereof and low-odor printing ink, the rosin modified resin is prepared from maleic anhydride, sulfonate alkyd resin, rosin and a metal organic framework, and the sulfonate alkyd resin is prepared from neopentyl glycol, dibutyltin dilaurate, m-phthalic acid-5-sodium sulfonate, phthalic anhydride and pentaerythritol. The printing ink has the effect of improving the strength and smell of the printing ink.

The present invention relates to the field of solar-driven interfacial photothermal evaporation technology, and more particularly to a solar-driven interfacial evaporator based on TiN / polyimide aerogel, its preparation method, and application. The TiN / polyimide aerogel comprises a polyimide aerogel matrix with vertical channels connecting upper and lower surfaces, loaded with TiN nanoparticles. The aerogel is prepared by polycondensation, dehydration, and cyclization of the polyimide aerogel 4,4'-diaminodiphenyl ether and 4,4'-oxydiphthalic anhydride. The TiN / polyimide aerogel provided by the present invention, when used as a solar-driven interfacial evaporator, can not only improve the water transfer performance of a three-dimensional photothermal evaporator, but also increase the photothermal evaporation rate during seawater desalination.

The invention discloses a two-component epoxy pouring sealant as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The bi-component epoxy pouring sealant comprises a component A and a component B. The component A comprises the following raw materials: 60-100 parts of modified epoxy resin; 5-25 parts of a reactive diluent; 1 to 10 parts of nano silicon dioxide; the component B comprises the following raw materials in parts by mass: 50-60 parts of an alicyclic amine curing agent; 20-30 parts of a polyether amine curing agent; 10 to 15 parts of methyl tetrahydrophthalic anhydride; 3-5 parts of a silane modifier; 0.1 to 0.5 part of a defoaming agent; the modified epoxy resin is prepared by carrying out esterification reaction on bisphenol A type epoxy resin and long-chain fatty acid for modification and then carrying out graft modification with polypropylene glycol diglycidyl ether. In addition, the invention also provides a preparation method of the two-component epoxy pouring sealant. The epoxy pouring sealant provided by the invention has excellent bonding performance on non-polar plastics such as PP / PE and the like.

The invention relates to the technical field of alkyd resin, in particular to organosilicone modified waterborne alkyd resin and a preparation method thereof.The method comprises the following steps that cottonseed oil, an alcoholysis catalyst and trimethylolpropane are subjected to an alcoholysis reaction under protection of inert gas, and an alcoholysis product is obtained; 2, carrying out esterification polymerization reaction on the alcoholysis product, a water-carrying agent, phthalic anhydride and trimellitic anhydride to obtain basic alkyd resin; the organic silicon modified alkyd resin is obtained from the basic alkyd resin and organic silicon under the action of the modified catalyst; sequentially adding a cosolvent, a neutralizer and water into the organic silicon modified alkyd resin, and stirring and mixing to obtain the organic silicon modified waterborne alkyd resin. According to the invention, through a modification technology, the hydrophobicity of a coating is enhanced while the water dispersibility of the organosilicon modified alkyd resin is ensured, so that the organosilicon modified resin has self-cleaning capability and permeation corrosion resistance, a steel structure material can be effectively protected, and the service life of the steel structure material is prolonged.

The invention relates to a high-heat-resistance and high-insulation two-component epoxy resin adhesive and application thereof, and belongs to the technical field of epoxy resin. The technical problem to be solved by the invention is to provide the high-heat-resistance and high-insulation two-component epoxy resin adhesive. The adhesive comprises a component A and a component B. The component A comprises bisphenol A epoxy resin, novolac epoxy resin, silicon carbide whiskers, potassium titanate fibers, boron phenolic resin and modified nano boron nitride. The component B is prepared from methylhexahydrophthalic anhydride, methyl tetrahydrophthalic anhydride, 2-phenylimidazole, modified aluminum oxide, polyimide micro powder and modified wollastonite. Through synergism of multiple materials, balance of heat conduction, insulation, mechanical strength and thermal stability of the adhesive is realized. Under high-frequency pulse voltage, the adhesive is long in electrical aging life. A gradient curing process is adopted for curing, complete reaction in each stage is guaranteed, and internal stress is reduced. The process fault tolerance is high, the environment compatibility is high, the cost is low, and the curing time is short.

The invention relates to the technical field of sound insulation materials, in particular to flame-retardant epoxy resin composite diatomite sound insulation cotton and a preparation method thereof. The flame-retardant epoxy resin composite diatomite sound insulation cotton is prepared from epoxy resin, diatomite, a composite flame retardant, a coupling agent, a curing agent, a diluent, a foaming agent and a charring agent. The composite flame retardant at least comprises ammonium polyphosphate and melamine; the coupling agent is a silane coupling agent or a titanate coupling agent; the curing agent is methyl tetrahydrophthalic anhydride; the diluent is n-butyl glycidyl ether; the foaming agent is azodicarbonamide; the charring agent is pentaerythritol. By optimizing the diatomite modification process and combining physical dispersion and chemical modification means, the compatibility of the diatomite and the epoxy resin is greatly improved, the pain point of filler agglomeration in the traditional process is thoroughly solved, the porous sound insulation potential of the diatomite is fully released, and the sound absorption and sound insulation performance of the material is qualitatively improved.

The invention relates to low-viscosity high-strength two-component epoxy winding resin and a preparation method and application thereof, the resin comprises a component A and a component B, and the mass ratio of the component A to the component B is 100: (80-110); the component A consists of the following raw materials in percentage by mass: 70-85% of modified epoxy resin, 14-20% of a functional reactive diluent and 1-10% of an impregnating compound; the modified epoxy resin is formed by compounding bisphenol A epoxy resin and polyether modified epoxy resin, and the functional active diluent is formed by compounding 1, 6-hexanediol diglycidyl ether and phenyl glycidyl ether; the component B is prepared from the following raw materials in percentage by mass: 85-96% of a composite anhydride curing agent, 2.5-10% of a high-efficiency accelerant and 1.5-5% of a defoaming agent; the composite anhydride curing agent is compounded by methyl tetrahydrophthalic anhydride and succinic anhydride, the efficient accelerant is compounded by imidazole and phosphine, and the defoaming agent is an organic silicon defoaming agent.

The utility model discloses a phthalic anhydride preparation device with a preheater, which comprises an o-xylene storage tank, an o-xylene heater, a mixer, an oxidation reactor, a first phthalic anhydride catcher, a second phthalic anhydride catcher, a tail gas tower and a phthalic anhydride rectifying tower which are sequentially connected through a pipeline, a liquid adding pump is arranged between the o-xylene storage tank and the o-xylene heater; the phthalic anhydride preparation device with the preheater further comprises an air compressor and an air heater which are sequentially connected through a pipeline, the air heater is connected with the mixer through a pipeline, and the air preheater is further arranged between the air compressor and the air heater and comprises a body. A heating pipe fitting is arranged in the body, the heating pipe fitting comprises a heating pipe and spiral fins arranged around the heating pipe, by-product low-pressure steam of the oxidation reactor can be reasonably utilized by additionally arranging the air preheater, and the use amount of high-pressure steam is saved.

The invention discloses ternary copolymerized low-dielectric polyimide based on fluorinated cross-linked side groups as well as a preparation method and application of the ternary copolymerized low-dielectric polyimide. According to the preparation method, two diamine monomers with a fluorine-containing group and a large-volume side chain group, namely fluorine-containing triarylmethane diamine and tetrafluorostyrene side group-containing diamine, are polymerized with 4, 4 '-(hexafluoroisopropenyl) diphthalic anhydride to obtain the ternary copolymerized polyimide (Co-FPAPI-x), and the preparation method is efficient, simple, convenient and low in cost. The tetrafluorostyrene group in the ternary copolymerized polyimide structure can form a hydrophobic cross-linked network through a thermal cross-linking reaction. Besides, by changing the proportion and thermal crosslinking degree of the two diamine monomers, the accumulation state, polarization behavior and the like of a molecular chain can be adjusted, so that the performance of the material is improved.

The invention discloses a polylactic acid composite material for a packaging bottle and a preparation method of the polylactic acid composite material. The polylactic acid composite material for the packaging bottle is prepared from the following components in parts by mass: 50 to 70 parts of polylactic acid, 10 to 30 parts of poly (epsilon-caprolactone), 10 to 30 parts of poly (propylene carbonate), 30 to 50 parts of functional master batch and 0.1 to 0.5 part of antioxidant, the functional master batch is prepared from a polylactic acid-modified nano silicon dioxide-poly (propylene carbonate) graft and a polylactic acid-modified nano silicon dioxide-poly (epsilon-caprolactone) graft; the modified nano silicon dioxide is 4-phenylethynyl phthalic anhydride modified nano silicon dioxide. The modified nano silicon dioxide is obtained by adopting an ultrasonic blending method, and different macromolecular substances are bonded through the modified nano silicon dioxide by utilizing an electron irradiation method to obtain a modified graft, so that the surface energy of particles can be reduced, the agglomeration among the particles can be reduced, and the dispersing performance of the nano silicon dioxide can be improved.

The invention discloses a polyimide-aluminum oxide composite film material and a preparation method thereof, the composite film material is composed of a polyimide layer and an aluminum oxide layer deposited and combined on the upper surface of the polyimide layer, and the thickness of the polyimide layer and the thickness of the aluminum oxide layer are both nanoscale; the composite film material is prepared by using atomic layer deposition equipment, and the preparation method comprises the following steps: firstly, depositing a nanoscale polyimide layer on a monocrystalline silicon piece carrier according to a set program by taking pyromellitic dianhydride and hexamethylenediamine as precursor raw materials; and depositing and combining a nanoscale aluminum oxide layer on the upper surface of the polyimide layer according to a set program by taking trimethylaluminum and distilled water as precursor raw materials. The prepared composite film material is different from a current composite film material prepared by blending polyimide and aluminum oxide and then carrying out film casting, the composite film material has a nano-scale polyimide layer with uniform thickness and a nano-scale aluminum oxide layer deposited and combined on the upper surface of the polyimide layer, and the composite film material has a good radiation refrigeration effect.

The present invention relates to the field of 1,4-dihydroxyanthraquinone dilution and hydrolysis mother liquor treatment, specifically a kind of cleaning treatment method of 1,4-dihydroxyanthraquinone dilution and hydrolysis mother liquor. Its steps mainly include: decolorization, cooling, neutralization and dissolution in ammonia water, solid-liquid separation, acidification, crystallization, drying pyrolysis, evaporation concentration, decolorization, quicklime reaction. The present invention can reclaim the excess phthalic anhydride added during the production of 1,4-dihydroxyanthraquinone in the dilution and hydrolysis mother liquor, can save resources, while reducing the production cost of the enterprise, meet the basic requirements of clean production, can extract boric acid by evaporation concentration hydroxyl mother liquor, centrifugation, drying, and then reclaim sulfuric acid by adding calcium oxide, truly achieve the unity of wastewater treatment and resource recovery, and realize clean production.

The invention discloses weather-resistant and medium-resistant alkyd resin varnish and a preparation method thereof. The varnish is prepared from the following raw materials: modified alkyd resin, a composite drier, zirconium iso-octoate with the purity of 12%, an anti-skinning agent, 200 # solvent oil and xylene. The modified alkyd resin is prepared from the following raw materials: soya oil acid, pentaerythritol, benzoic acid, pyrrolidine-2-one-1-acetic acid, dimethylbenzene and a 200 # solvent. According to the invention, pyrrolidine-2-ketone-1-acetic acid is used as a binary acid component to partially or completely replace traditional phthalic anhydride, so that the reaction efficiency of alkyd resin synthesis can be improved, and the problems of yellowing, pulverization and poor water resistance of traditional alkyd resin can be solved; according to the varnish prepared by the invention, on the basis of maintaining the inherent gloss, flexibility and constructability of alkyd resin, the key properties such as weather resistance, water resistance and acid resistance are improved; the whole preparation process of the varnish continues to use mature alkyd resin production equipment and flow, and has good economical efficiency and industrial popularization prospects.

The invention discloses phosphate-based flame-retardant unsaturated polyester resin and a synthesis method thereof, and belongs to the technical field of chemical raw material production. The preparation method comprises the following steps: mixing a hydroxyl monomer, a phosphoryl dichloride monomer, an organic solvent and triethylamine, and reacting to obtain a phosphate flame-retardant unsaturated polyester resin monomer; mixing and reacting the phosphate flame-retardant unsaturated polyester resin monomer, phthalic anhydride, maleic anhydride and neopentyl glycol to obtain polyester resin; the polyester resin and the polyurethane-coated aluminum hydroxide emulsion are mixed and react to obtain the phosphate-based flame-retardant unsaturated polyester resin. According to the preparation method, a phosphate-based flame-retardant unsaturated polyester resin monomer is obtained through chemical synthesis, polyester resin is obtained through further polymerization, the polyester resin reacts with polyurethane-coated aluminum hydroxide emulsion, and the phosphate-based flame-retardant unsaturated polyester resin which does not contain halogen groups and has good flame retardant property and mechanical property is obtained.

The invention relates to the field of ceramic packaging materials, in particular to a packaging material for a high-voltage-resistant ceramic side wall and a preparation method of the packaging material. The packaging material is prepared from an epoxy-silica hybrid prepolymer, an aluminum oxide and silicon dioxide core-shell composite filler, methylhexahydrophthalic anhydride and 2-ethyl-4-methylimidazole, wherein the hybrid prepolymer is prepared by carrying out hydrolytic condensation on bisphenol A diglycidyl ether, hydroxyl-terminated PDMS (Polydimethylsiloxane) and 3-glycidoxypropyltrimethoxysilane; low viscosity and low volatile matter are realized; the core-shell filler takes aluminum oxide as a core and silicon dioxide as a shell, and a shell layer is grafted with epoxy silane so as to be chemically bonded with resin. And after curing, the power frequency short-time electrical strength of the packaging layer is greater than or equal to 20 kV / mm, the partial discharge initial voltage is greater than or equal to 3 kV, the volatile matter is less than or equal to 1.0 wt%, and the water content is less than or equal to 0.2 wt%.

The application provides a preparation method of an indobufen key intermediate. The method uses 2-(4-nitrophenyl) butyric acid and phthalic anhydride as raw materials, and obtains the target compound (I) through a one-pot method. The method has the advantages of simple operation, mild conditions, high reaction yield, reduced cost through mother liquor recycling and reuse, significantly reduced "three wastes" and environmental protection, and is suitable for large-scale industrial production.

The application discloses a brazing flux capable of enhancing the radiation resistance of aluminum alloy brazing joints, and a preparation method and application thereof. The brazing flux is composed of 5-18% of an organic mixture and the balance of an inorganic mixture. The organic mixture is composed of 7-15% of EP-12 epoxy resin, 8-16% of EP-16 epoxy resin, 5-8% of F-51A high-temperature-resistant flame-retardant thermosetting phenolic resin, 5-8% of F-52A high-temperature-resistant flame-retardant thermosetting phenolic resin, 5-8% of resorcinol, 5-8% of hydroquinone and the balance of phthalic anhydride. The inorganic mixture is composed of 40-55% of CsF, 20-30% of AlF3, 0.005-0.01% of GaF3 and the balance of Al(OH)3. The brazing flux matches Zn-Al filler metal, can make the aluminum alloy brazing joint have good radiation resistance, and can significantly improve the shearing strength of the brazing joint.

The present application belongs to the field of polymer materials, and particularly relates to a self-toughened epoxy resin with high temperature resistance and a preparation method thereof. The modifier is a multifunctional epoxy resin containing a polyetherimide structure. The modifier is dissolved and blended with a bisphenol A type epoxy resin. The curing agent comprises one or more of methyl nadic anhydride, methyl tetrahydrophthalic anhydride, methyl hexahydrophthalic anhydride, dodecenyl succinic anhydride and pyromellitic anhydride. The curing accelerator comprises one or more of dimethylaminomethylphenol, ortho-hydroxybenzyl dimethylamine, 2,4,6-tris(dimethylaminomethyl)phenol, triethylamine and triethanolamine. The multifunctional epoxy resin containing a polyetherimide structure not only has good solubility in the bisphenol A type epoxy resin, but also can participate in the curing reaction of the bisphenol A type epoxy resin, so that the toughness and temperature resistance of the bisphenol A type epoxy resin can be significantly improved.

The invention relates to a preparation method of a Pd-based catalyst and application of the Pd-based catalyst in catalytic synthesis of biphenyltetracarboxylic dianhydride. According to the method, an alkaline substance is added, and nickel oxide is modified and regulated through hydroxyl, so that the specific surface area of the Pd / NiO catalyst is increased, and the effect between Pd and NiO is enhanced; the obtained catalyst can promote coupling of halogenated phthalic anhydride, and the synthesis efficiency of biphenyl tetracarboxylic dianhydride is improved. The catalyst is simple in preparation process and excellent in performance and is applied to synthesis of biphenyltetracarboxylic dianhydride, and esterification and ester hydrolysis steps do not need to be added.

The invention relates to dual-purpose high-adhesion composite offset printing ink and a preparation method thereof, and belongs to the technical field of offset printing. The invention provides a preparation method of dual-purpose high-adhesion composite offset printing ink, which comprises the following steps of: melting rosin, mixing with maleic anhydride and phthalic anhydride, cooling, adding pentaerythritol and glycerol, continuously mixing, cooling to obtain rosin modified resin, adding acrylate copolymer and epoxidized soybean oil, mixing, and uniformly mixing to obtain the dual-purpose high-adhesion composite offset printing ink. The preparation method comprises the following steps: adding KH-570 into a reaction kettle, adding a double-modified pigment, manganese isooctanoate and a dispersant, continuously mixing and grinding to obtain a premix, mixing with KH-570, adding a photoinitiator and an antioxidant, continuously mixing, and filtering to obtain the product. According to the invention, the cooperation of UV curing and oxidation curing is realized by adjusting the formula, and meanwhile, the dual-modification pigment, the acrylate copolymer and the like are introduced to realize the interface bonding between the ink and a curing layer and between the ink and a UV curing layer or an oxidation curing layer, so that layering is avoided, and the high adhesion of the ink is promoted.

The application discloses a molecular sieve catalyst for synthesizing dianhydride from durene by gas phase oxidation, a preparation method of the molecular sieve catalyst and a method for synthesizing dianhydride, the molecular sieve catalyst comprises V, Al, P, O and Ti elements, and contains 0.1wt%-10wt% V2O5, 30wt%-60wt% Al2O3, 30wt%-50wt% P2O5 and 1wt%-20wt% TiO2 in terms of oxides; the structure of the molecular sieve is AFI structure, wherein the Ti element exists in the form of TiO2, and the TiO2 is in the form of anatase. The molecular sieve catalyst comprises V, Al, P, O and Ti elements. The catalyst is suitable for industrial production of dianhydride prepared from durene by gas phase oxidation, and has the characteristics of simple preparation process, high catalytic activity and high dianhydride yield.

The utility model provides a phthalic anhydride tail gas washing device which comprises a washing tower, a liquid storage layer, a filtering layer, an adsorption layer and a spraying layer are sequentially arranged in the washing tower from bottom to top, a demisting plate is arranged on the upper portion of the washing tower, and a storage tank used for storing washing liquid is arranged on the outer side wall of the washing tower. A flow division pipe communicated with the storage tank is arranged on the outer side wall of the storage tank, a gas guide pipeline communicated with the side wall of the washing tower is arranged on the outer side wall of the washing tower located on the outer side of the spraying layer, a plurality of spraying pipes communicated with the flow division pipe are arranged on the upper portion of the gas guide pipeline, and flow guide pipes communicated with the flow division pipe are arranged on the upper portions of the spraying pipes; according to the utility model, harmful gas in waste gas can be washed, absorbed and cleaned through washing liquid sprayed by the spraying pipe in the washing tower, and liquid drops in gas flow can be removed through the demisting plate, so that the washing efficiency of the waste gas is greatly improved, and secondary pollution is avoided.

This invention belongs to the field of stone adhesive technology, specifically relating to a transparent stone splicing adhesive and its preparation method. The adhesive comprises a resin component and a curing component. The resin component includes maleic anhydride, phthalic anhydride, diol, catalyst, polymerization inhibitor, and crosslinking monomers, etc., and the diol includes at least 1,2-propanediol. The curing component includes an accelerator composed of dimethylaniline and zinc adipate, and a benzoyl peroxide initiator. The adhesive of this invention is colorless and transparent after curing, exhibits excellent resistance to yellowing, is easy to apply, and after curing with fillers, possesses excellent shear strength, water shear strength, and impact resistance. It can be widely used in high-end stone splicing, repair, and craft bonding.

The invention discloses preparation and application of a double-sided aluminized polyimide film for ultralow-temperature multilayer vacuum insulation, and relates to the technical field of polyimide film preparation. The invention relates to an ultralow-temperature multilayer double-sided aluminized polyimide film for vacuum heat insulation, which consists of a polyimide base film and aluminized layers formed on two surfaces of the polyimide base film through a vacuum evaporation method, the polyimide base film is prepared from the following raw materials in parts by mass: 100 parts of pyromellitic dianhydride, 4, 4 '-diaminodiphenyl ether, 5-15 parts of a low-temperature-resistant modifier, 3-8 parts of nano silicon dioxide filler, 0.5-2 parts of a flatting agent, 0.5-1.5 parts of an anti-aging agent, 3-6 parts of a silane coupling agent and 5-15 parts of polyvinyl chloride. The anti-aging agent with a specific structure is adopted, the phenolic hydroxyl group and the benzotriazole structure have a synergistic effect, free radicals can be captured, ultraviolet rays can be absorbed, the compatibility with a polyimide matrix is good, precipitation at low temperature is avoided, the problems that a traditional anti-aging agent is poor in low-temperature dispersion and prone to failure are solved, and the service life of the film is prolonged.

The invention relates to a preparation method and application of a nucleating agent. The preparation method comprises the following steps: mixing solvent pure water, calcium hydroxide and fatty acid methyl ester sulfonate, and heating; dropwise adding hexahydrophthalic anhydride into the mixed solution, and after dropwise adding is completed, carrying out heat preservation reaction to obtain the calcium hexahydrophthalate. The product has excellent performance when used for thermoplastic resin such as polyolefin.

The application discloses a water-based polyurethane for nail polish and a preparation method thereof, and relates to the technical field of water-based polyurethane. The water-based polyurethane for nail polish comprises mixed polyols, polyisocyanate, functional monomers, a hydrophilic agent, a post-chain extender and deionized water, wherein the mixed polyols are a combination of polycaprolactone glycol, phthalic anhydride polyester polyol and polyether polyol, and the functional monomers comprise amino type furan monomers and amino type maleimide monomers. Through the technical scheme, the glossiness and surface hand feeling of the water-based polyurethane after film formation can be effectively improved, and the apparent quality and product value of the nail polish prepared from the water-based polyurethane are improved.

The invention relates to the technical field of functional food active substance delivery, in particular to a high-dispersion-phase aqueous two-phase emulsion based on amphiphilic chitosan colloidal particles as well as a preparation method and application of the high-dispersion-phase aqueous two-phase emulsion. Chitosan reacts with phthalic anhydride to obtain a phthalic anhydride modified chitosan polymer; inducing the phthalic anhydride modified chitosan polymer to form a phthalic anhydride modified chitosan colloidal particle dispersion liquid; dialyzing the phthalic anhydride modified chitosan colloidal particle dispersion liquid in an aqueous solution, and removing the organic solvent to obtain a phthalic anhydride modified chitosan colloidal particle aqueous dispersion liquid; the preparation method comprises the following steps: dissolving polyethylene glycol in a phthalic anhydride modified chitosan colloidal particle aqueous dispersion to obtain a polyethylene glycol phase, dissolving dextran in ultrapure water to obtain a dextran phase, and mixing the polyethylene glycol phase with the dextran phase to obtain a dextran-polyethylene glycol aqueous two-phase emulsion. The problem of low loading capacity of the traditional emulsion is solved, and meanwhile, the stability of active substances is improved.

The invention provides a water-based adhesive and a preparation method thereof, and belongs to the field of high polymer materials. The water-based adhesive is prepared from the following chemical components in parts by weight: 3.5 to 5.0 parts of N-(3, 4-dihydroxyphenethyl) methacrylamide, 2.5 to 3.5 parts of phenylboronic acid functionalized polyethylene glycol, 1.2 to 2.0 parts of polyethyleneimine-dopamine copolymer, 3.0 to 4.0 parts of sulfobetaine methacrylate, 27.0 to 32.0 parts of epoxidized cardanol-polycaprolactone copolymer, 7.0 to 10.0 parts of methyl tetrahydrophthalic anhydride and the balance of water. The coating is prepared from the following components in parts by weight: 4.5 to 6.5 parts of sulphobetaine / boron nitride hybrid filler, 6.0 to 8.0 parts of acrylic acid-boric acid core-shell hyperbranched polyester, 0.3 to 0.5 part of photoinitiator, 0.3 to 0.5 part of flatting agent and 30.0 to 35.0 parts of deionized water. The chemical components of the water-based adhesive are reasonably designed, so that the water resistance, toughness and functionality of the water-based adhesive are considered.