9 results about "Hexamethylphosphoramide" patented technology

The solvated metal particle-coating system includes a metal additive and a polar outer-sphere electron transferring solvent. The metal additive is solvated in the polar outer-sphere electron transferring solvent. The polar outer-sphere electron transferring solvent may include liquid ammonia, methylamine, and / or hexamethylphosphoramide. The metal additive may include an alkali metal and / or an alkaline earth metal. The solvated metal additive within the polar outer-sphere electron transferring solvent may be used to coat a metal particle and / or a metalloid particle as a layer. As the polar outer-sphere electron transferring solvent evaporates, the solvated metal additive is coupled to the metal particle and / or the metalloid particle.

The solvated metal particle-coating system includes a metal additive and a polar outer-sphere electron transferring solvent. The metal additive is solvated in the polar outer-sphere electron transferring solvent. The polar outer-sphere electron transferring solvent may include liquid ammonia, methylamine, and / or hexamethylphosphoramide. The metal additive may include an alkali metal and / or an alkaline earth metal. The solvated metal additive within the polar outer-sphere electron transferring solvent may be used to coat a metal particle and / or a metalloid particle as a layer. As the polar outer-sphere electron transferring solvent evaporates, the solvated metal additive is coupled to the metal particle and / or the metalloid particle.

This invention relates to a coating solution for composite lithium-ion battery separators, a composite lithium-ion battery separator, and a method for preparing the same. The coating solution for composite lithium-ion battery separators comprises: (A) poly(p-phenylene terephthalamide); (B) an organic solvent, which is at least one selected from hexamethylphosphoramide and tetramethylurea; (C) a co-solubilizing salt, which is at least one selected from lithium chloride and calcium chloride; and (D) an additive, which is at least one selected from ceramic powder and polymer binder. The coating solution for composite lithium-ion battery separators exhibits good stability. The composite lithium-ion battery separator possesses good air permeability, heat resistance, and good compatibility with the electrolyte, making it suitable for lithium-ion batteries. The preparation methods for both the coating solution and the composite lithium-ion battery separator are simple, convenient, and have low production costs.

The invention relates to the technical field of copper corrosion inhibitors, in particular to a copper corrosion inhibitor which comprises the following components in parts by weight: 20-40 parts of aminobenzimidazole / Ni < 2 + > MOFs, 30-50 parts of small molecular alcohol with the molecular weight not more than 60wt%, and 10-40 parts of a strong-polarity organic solvent with the polarity not weaker than that of hexamethylphosphoramide. According to the corrosion inhibitor, the metal organic framework material MOFs serves as a main component, corrosion of Cl <-> in a salt solution to copper can be effectively inhibited, and the corrosion inhibitor is small in dosage (the dosage of the corrosion inhibitor can be as low as 20 ppm), remarkable in corrosion inhibition effect and environmentally friendly. Moreover, the copper corrosion inhibitor can be used in different temperature environments (the temperature range can be 25-60 DEG C, and the copper corrosion inhibitor is free of volatility and toxicity), and the copper corrosion inhibitor can be directly added into a corrosive medium.

The invention discloses an electroplated copper foil electroplating liquid leveling agent with a crystal face guiding effect, and the leveling agent is thiamine, N-ethyl ethylenediamine, glycine, N, N-bis (2-ethoxyl) glycine, hexamethylphosphoramide, theophylline, 3-cyanopyridine, 2-hydroxypyridine, beta-methylpyridine, 1-(2-mercaptobenzothiazole-3-yl) imidazole, 1, 2-diphenyl-1, 3-pentanediol, 1, 3-pentanediol, 1, 3-pentanediol, 1, 3-pentanediol, 1, 3-pentanediol, 1, 3-pentanediol, 1, 3-pentanediol, 1, 3-pentanediol, 1, 3-pentanediol, 1, 3-pentanediol, 1, 3-pentanediol and 1, 3-pentanediol. The catalyst is selected from one or more of 1, 3-bis (1-imidazolyl) propane, 2-amino-4-methylbenzothiazole and pyridinium propanesulfonate. The leveling agent disclosed by the invention can homogenize grain size distribution on the surface of the electroplated copper foil and reduce a wrinkle phenomenon caused by microstress in a post-treatment process of the copper foil; meanwhile, the material can be adsorbed on the surface of the copper foil, copper ion nucleation overpotential is increased, deposited grains are refined, and the tensile strength of the copper foil is improved.

The invention relates to a synthesis method of an N, N-disubstituted enamine ester compound, and discloses a method for synthesizing the N, N-disubstituted enamine ester compound by taking phenylglycine ester and N, N-disubstituted amido malononitrile as substrates, copper acetate as a catalyst, chloranil as an oxidizing agent, hexamethylphosphoramide as an additive and acetonitrile as a solvent and reacting at 60 DEG C to obtain the N, N-disubstituted enamine ester compound. The invention discloses an N, N-disubstituted enamine ester compound. The method has good functional group tolerance, and an efficient and novel preparation method is provided for the N, N-disubstituted enamine ester compound.

The invention discloses a controllable free radical polymerization method for regulation and control of solvated electron initiation by a cosolvent, the polymerization method adopts a high polymerization temperature and simultaneously adds a cosolvent tetrahydrofuran for regulation and control, and solvated electron initiation polymerization still can maintain the property of controllable free radical polymerization. The method can be used for preparing polymers with accurate and controllable molecular weight and narrow molecular weight distribution as well as polymers with various topological structures such as blocks and stars with accurate structures. The cosolvent-regulated solvated electron-initiated controllable free radical polymerization method comprises the following steps: adding a cosolvent into a polymerization system of alkali metal lithium / hexamethylphosphoric triamide solvated electron-initiated allyl monomers, carrying out controllable free radical polymerization, improving the polymerization rate and obtaining a polymer with narrow molecular weight distribution, wherein the cosolvent is tetrahydrofuran, the dosage of the tetrahydrofuran is 3-6 mL and the polymerization temperature is 50-60 DEG C on the basis that the dosage of the hexamethylphosphoramide is 20 mL.

A method for preparing lignan-derived schisandrol A, belonging to the field of medicinal chemistry. The method comprises: 1. Preparing intermediate 1 using 3,4,5-trimethoxybenzaldehyde and N-bromosuccinimide; 2. Preparing intermediate 2 using intermediate 1, a nickel catalyst, a ligand, tetrabutylammonium iodide, and zinc powder; 3. Preparing intermediate 3 using intermediate 2, methyl chloropropionate, and an organic base; 4. Preparing intermediate 4 using intermediate 3, ethyltriphenylphosphine bromide, and potassium tert-butoxide; 5. Preparing intermediate 5 using intermediate 4, an alkaline solution, and hydrochloric acid; 6. Preparing lignan-derived schisandrol A using intermediate 5, a samarium catalyst, hexamethylphosphoramide, and tert-butanol. This invention optimizes the reaction pathway, requiring only 6 steps to efficiently synthesize schisandrol A, significantly shortening the traditional synthetic route, improving overall reaction efficiency and the total yield of the target product. Tests show that schisandrol A has good antibacterial activity against *Escherichia coli* and *Staphylococcus aureus*.

The invention relates to the technical field of copper corrosion inhibitors, in particular to a copper corrosion inhibitor which comprises the following components in parts by weight: 20-40 parts of aminobenzimidazole / Co < 2 + > MOFs, 30-50 parts of small molecular alcohol with the molecular weight not more than 60wt%, and 10-40 parts of a strong-polarity organic solvent with the polarity not weaker than that of hexamethylphosphoramide. According to the corrosion inhibitor, the metal organic framework material MOFs serves as a main component, corrosion of Cl <-> in a salt solution to copper can be effectively inhibited, and the corrosion inhibitor is small in dosage (the dosage of the corrosion inhibitor can be as low as 20 ppm), remarkable in corrosion inhibition effect and environmentally friendly. Moreover, the copper corrosion inhibitor can be used in different temperature environments (the temperature range can be 25-60 DEG C, and the copper corrosion inhibitor is free of volatility and toxicity), and the copper corrosion inhibitor can be directly added into a corrosive medium.