15 results about "Maleamic acid" patented technology

The invention discloses an anti-corrosion PVC printing film and a preparation method thereof, and relates to the technical field of printing films. When the anti-corrosion PVC printing film is prepared, silane modified titanium dioxide and benzotriazole-1-carbonyl chloride are subjected to a reaction, and benzotriazole modified titanium dioxide is prepared; the preparation method comprises the following steps: reacting polyvinyl chloride with furan-2-mercaptan to prepare modified polyvinyl chloride; the preparation method comprises the following steps: reacting maleic anhydride with 2, 2, 3, 3, 4, 4, 5, 5-octafluoro-1, 6-hexamethylenediamine to prepare fluorine modified bismaleamic acid; phosphorus-containing castor oil, hydrogen peroxide and concentrated sulfuric acid are subjected to a reaction, and the phosphorus-containing castor oil-based plasticizer is prepared. The modified polyvinyl chloride, polyvinyl chloride, benzotriazole modified titanium dioxide, fluorine modified maleamic acid and a phosphorus-containing castor oil-based plasticizer are fused and pressed into a film, and the anti-corrosion PVC printing film is prepared. The anti-corrosion PVC printing film prepared by the invention has excellent anti-corrosion, anti-aging, self-repairing and flame-retardant properties.

The invention relates to the field of high polymer materials, and discloses a high-insulation and high-flame-retardant polyimide material and a preparation method thereof.The polyimide material comprises a bismaleimide monomer, 4, 4-diaminodiphenyl disulfide, a modified halloysite nanotube, a modified epoxidized silicon-containing intermediate and an organic solvent; the bismaleimide monomer is prepared by carrying out ring-opening addition on maleic anhydride and 1, 5-naphthalene diamine and dehydrating maleamic acid to form a ring; the modified halloysite nanotube is prepared by modifying the surface of a halloysite nanotube with a silver nanowire by using silver nitrate, polyvinylpyrrolidone, ethylene glycol and sodium chloride as raw materials through an in-situ reduction method; the modified epoxidized silicon-containing intermediate is prepared by reacting an epoxidized silicon-containing intermediate prepared by reacting phenyl tri (dimethyl siloxane) silane and allyl glycidyl ether with 1-pyrene butyric acid. The polyimide material prepared by the invention has excellent mechanical properties, high temperature resistance, thermal conductivity, hydrophobicity and flame retardance.

The invention provides a preparation method of a maleimide compound, which comprises the following steps: carrying out solid-phase grinding on raw materials comprising an aniline compound and maleic anhydride to prepare a maleamic acid intermediate product, and carrying out ring-closure reaction to prepare the maleimide compound. The process method is simple and easy to implement, an intermediate product can be stably prepared, then the intermediate product is subjected to a closing reaction, the raw material conversion rate and the product yield can be greatly improved, the synthesis process is controllable, no dehydrating agent is used, the reaction time is short, the process is simple and easy to operate, and the obtained maleimide is stable in property and wide in applicability.

The invention discloses a hydrophilic corrosion and scale inhibitor as well as a preparation method and application thereof, and belongs to the technical field of macromolecular water treatment. The hydrophilic corrosion and scale inhibitor has the following structure, in addition, the invention also provides a preparation method of the hydrophilic corrosion and scale inhibitor, which comprises the following steps: mixing sodium lignin sulfonate, formaldehyde and N-methylallylamine, and reacting under a heating condition; the preparation method of the corrosion and scale inhibitor comprises the following steps: firstly, adding 2, 3-epoxypropyl trimethyl ammonium chloride, reacting at 50-55 DEG C, heating to 80-90 DEG C, adding itaconic acid and maleamic acid, mixing, dropwise adding an initiator, and reacting at 80-90 DEG C to obtain the corrosion and scale inhibitor. The invention also provides application of the hydrophilic corrosion and scale inhibitor or the hydrophilic corrosion and scale inhibitor prepared by the preparation method in oil field water treatment. The hydrophilic corrosion and scale inhibitor provided by the invention can better realize corrosion and scaling.

The invention provides a preparation method of high-purity bis (3-ethyl-5-methyl-4-maleimidophenyl) methane, and belongs to the technical field of polymer synthesis, and the preparation method comprises the following steps: reacting diamine with maleic anhydride in an organic solvent to obtain bismaleamic acid, and carrying out dehydration by taking inorganic acid or inorganic acid salt as a dehydration catalyst to obtain the high-purity bis (3-ethyl-5-methyl-4-maleimidophenyl) methane. The preparation method comprises the following steps: carrying out dehydration ring-closure reaction on bismaleamic acid to prepare bis (3-ethyl-5-methyl-4-maleimidophenyl) methane; the inorganic acid is phosphoric acid, nitric acid or sulfuric acid, and the inorganic acid salt is sodium hydrogen sulfate or sodium dihydrogen phosphate; the dosage of the organic solvent is not more than 6 times of the equivalent weight of diamine. The high-purity bis (3-ethyl-5-methyl-4-maleimidophenyl) methane is prepared by adopting an inorganic acid catalysis system and a low-temperature dehydration process, so that the problems of organic catalyst residue, excessive solvent, bottleneck of product purity, overhigh process temperature, chromatic aberration of the product, limited application field and the like are solved, and the yield and purity of the product are improved.

The invention relates to the technical field of nanometer material dispersion, in particular to a method for dispersing a nanometer material in a non-polar solvent and a method for stripping and dispersing a two-dimensional material. The method for dispersing the nano material in the non-polar solvent comprises the following steps: mixing the nano material, a modifier and the non-polar solvent, and then carrying out ultrasonic treatment, the modifier is a copolymer of an unsaturated amide monomer and methacrylate; the molar ratio of the unsaturated amide monomer to the methacrylate is 1: (3-15); the unsaturated amide monomer is prepared from one or more of maleamic acid, 3-acrylamido benzoic acid, N-acryloyl (trihydroxymethyl) aminomethane and 3-methacryloyl dopamine. According to the method, stable dispersion of the nano material in the non-polar solvent and efficient stripping and stable dispersion of the two-dimensional material can be realized, and the method has universality for different types of nano materials and non-polar solvents.

The present invention belongs to the field of electrochemical energy storage technology, and specifically discloses an aqueous zinc ion battery electrolyte containing maleamic acid, a battery and a preparation method thereof. The electrolyte uses water as a solvent and contains a zinc salt and a maleamic acid additive. Maleamic acid forms a stable interface protective layer on the zinc surface through the selective adsorption of its polar carboxyl functional group, significantly reduces the free water activity at the electrode / electrolyte interface, inhibits hydrogen evolution and by-products; increases the nucleation overpotential of zinc deposition, promotes uniform nucleation of zinc ions; induces the preferential growth of zinc crystal faces, forms a dense and ordered deposition layer dominated by the (101) crystal face, and thus inhibits dendrites. The battery assembled using the electrolyte exhibits excellent cycle stability. The electrolyte provided by the present invention has a simple formula, low cost, and is environmentally friendly, providing a new solution for the development of high-safety, long-life aqueous zinc ion batteries, and has important application value in the field of large-scale energy storage.

The invention relates to the technical field of oilfield chemistry, in particular to an amino acid type gemini surfactant and a preparation method and application thereof.The amino acid type gemini surfactant is prepared according to the following method that firstly, N-long-chain alkyl maleamic acid and methyl alcohol are mixed and then react, and a first mixed solution is obtained; 2, adding organic amine into the first mixed solution, and reacting to obtain a second mixed solution; and step 3, adding sodium hydroxide into the second mixed solution, and reacting to obtain the amino acid type gemini surfactant. The amino acid type gemini surfactant contains long-chain alkyl, amino and carboxyl, is excellent in performance and can meet the exploration and development requirements of oil and gas fields. The preparation method of the amino acid type gemini surfactant is reliable in principle, simple and convenient to operate and suitable for industrial production. The acid fracturing discharge aiding agent using the amino acid type gemini surfactant as a raw material can effectively reduce the surface tension and the interfacial tension of an aqueous solution, and meets the technical specification of the acid fracturing discharge aiding agent.

The invention relates to a polymer surfactant, a fracturing fluid based on the polymer surfactant and a preparation method and application of the fracturing fluid, and belongs to the technical field of oil and gas development. The poly-surfactant provided by the invention is obtained by carrying out copolymerization reaction on three monomer raw materials, namely 2-acrylamide-2-methylpropanesulfonate, acrylamide and long-chain alkyl maleamic acid salt, and the fracturing fluid prepared by compounding the poly-surfactant and an anionic surfactant has excellent comprehensive properties such as high temperature resistance, high salt resistance and shear resistance; after the fracturing fluid is used for fracturing construction operation, the stratum permeability can be effectively improved, so that the recovery ratio of an oil-gas well is greatly improved.

The application discloses N-halamine antibacterial microspheres of a maleimide copolymer and a preparation method and application thereof, and belongs to the technical field of antibacterial materials. The maleimide copolymer crosslinked microspheres can simultaneously contain maleamic acid groups and maleimide groups, and after halogenation by a hypohalite, the amide groups / imide groups can be modified into N-halamine groups with antibacterial effects. The N-halamine antibacterial microspheres of the maleimide copolymer can efficiently kill staphylococcus aureus and escherichia coli.

This invention discloses a polypropylene composition, its preparation method, and its applications, belonging to the field of polymer material modification technology. The polypropylene composition comprises a matrix polypropylene, a second polypropylene, a polyolefin elastomer, a masterbatch A composed of bismaleimide monomers, a third polypropylene, zirconium phosphate, and a silane coupling agent, masterbatch B. This invention achieves excellent interfacial compatibilization and controllable crosslinking within the polyolefin elastomer phase through the reaction of maleic anhydride and dodecyl diamine with bismaleimide monomers. Simultaneously, ball-milled modified zirconium phosphate provides efficient heterogeneous nucleation, significantly improving the crystallinity of the matrix. The resulting polypropylene composition better balances rigidity and toughness, broadening the application prospects of polypropylene materials in high-performance fields.

The application provides an organic-solvent-resistant nanofiltration membrane and a manufacturing method thereof, and relates to the technical field of nanofiltration membranes. The manufacturing method comprises the following steps: providing a diamine, a dianhydride, an octa-maleimide acid cage silsesquioxane and an aprotic polar solvent; mixing the diamine, the octa-maleimide acid cage silsesquioxane and the aprotic polar solvent and heating to reflux to obtain a first mixture; mixing the first mixture with the dianhydride and reacting to obtain a second mixture; and solidifying the second mixture into a film to obtain the organic-solvent-resistant nanofiltration membrane. The organic-solvent-resistant nanofiltration membrane has a high permeation flux and good organic-solvent resistance.

The invention relates to a fluorine-containing bismaleimide compound as well as a preparation method and application thereof, a precursor fluorine-containing bismaleimide acid compound as well as a preparation method and application thereof, and belongs to the technical field of organic synthesis. The preparation method of the fluorine-containing bismaleimide compound comprises the following steps: adding a fluoroalkyl substituted 4, 4 '-diaminodiphenylmethane compound and a maleic anhydride compound into a ball-milling tank, and carrying out mechanical ball-milling reaction under the action of a trace ionic liquid solvent and a ball-milling medium to obtain the fluorine-containing bismaleimide compound. And after the reaction is finished, sequentially pulping, filtering and drying the ball-milled product by using absolute ethyl alcohol to obtain the fluorine-containing bismaleimide compound. The preparation method has the advantages of mild conditions, simple operation, high reaction efficiency, cheap and easily available raw materials, good atom economy, low cost, safety improvement, facilitation of efficient green industrial production, reduction of three-waste emission, good yield, short reaction time, small environmental pollution and the like, and is suitable for industrial popularization and application.

The invention relates to a preparation method of 2, 2 '-bis [4-(4-maleimide phenoxy) phenyl] propane, and belongs to the technical field of organic compound synthesis. The preparation method comprises the following steps: reacting 2, 2 '-bis [4-(4-aminophenoxy phenyl)] propane with maleic anhydride to obtain bismaleamic acid, and carrying out dehydration cyclization in the presence of acetic anhydride to obtain 2, 2'-bis [4-(4-maleimide phenoxy) phenyl] propane; in the cyclization process, toluene is used as a solvent, triquinyl ionic liquid is used as a cosolvent, and triethylamine is used as an acid-binding agent; the triquinolyl ionic liquid disclosed by the invention is prepared from 1-allyl-3-methylimidazolium tetrafluoroborate, guanidine sulfamate, 2-amino-1, 3, 5-triazine, DMF (Dimethyl Formamide) and sodium tert-butoxide. The 2, 2 '-bis [4-(4-maleimide phenoxy) phenyl] propane prepared by the method has high purity and yield, has good economic benefits, and is suitable for large-scale industrial production.

The invention relates to the technical field of oilfield chemistry, in particular to a gemini amphoteric surfactant and a preparation method and application thereof.The gemini amphoteric surfactant is prepared according to the following method that firstly, N-long-chain alkyl maleamic acid and methyl alcohol are mixed and then react, and a first mixed solution is obtained; 2, adding organic diamine into the first mixed solution, and reacting to obtain a second mixed solution; and 3, adding sodium hydroxide into the second mixed solution, and reacting to obtain the gemini ampholytic surfactant. The gemini ampholytic surfactant provided by the invention has the characteristics of biodegradability, no biotoxicity and environmental protection, and also has excellent water solubility and surface activity. The discharge aiding agent for acid fracturing, which is compounded with an anionic surfactant, has the characteristic of good composite synergism, can effectively reduce the surface tension and the interfacial tension of fracturing fluid of an oil and gas field, meanwhile, remarkably reduces the use amount of the surfactant, reduces the cost, and is suitable for acid fracturing operation in different operation environments.