11 results about "Ketone solvents" patented technology

This invention discloses a method for preparing polyethylene cyclohexanedicarboxylate (PECCHD) from waste PET. Specifically, it relates to a solvent composition for dissolving PET, characterized in that the solvent composition comprises a first solvent and a second solvent; the first solvent is a haloalcohol solvent or a cyclic ether solvent; the second solvent is one or more of a cyclic ether solvent, a chain ether solvent, a nitrile solvent, a ketone solvent, or a haloalkane solvent; the chain ether solvent is a chain ether solvent with 2-4 oxygen atoms; the volume ratio of the first solvent to the second solvent is 1:(1-5); the first solvent and the second solvent are not the same solvent. This method has significant advantages in terms of raw material adaptability, reaction efficiency, and industrialization potential, achieving a highly efficient conversion from low-end waste PET to high-value-added PECHD.

This invention belongs to the field of polyolefin preparation and relates to a method for preparing a polyolefin material with low metal impurities and resistance to precipitation. The method includes the following steps: (1) adding polyolefin resin raw material and fatty ketone solvent into the extraction vessel of a supercritical extraction device, introducing a gaseous medium into the extraction vessel, adjusting the temperature and pressure of the extraction vessel to make the gaseous medium be in a supercritical state, and treating the polyolefin resin raw material in a supercritical fluid; the fatty ketone solvent is C3-C 10 (1) At least one of the fatty ketone solvents; (2) Cooling and depressurizing to separate the polyolefin resin raw material from the solvent phase and drying it to obtain the polyolefin material with low metal impurities and resistance to precipitation. The method provided by the present invention has high efficiency in removing metal impurities from polyolefins and simultaneously achieves the removal and control of the content of soluble polymers, which significantly improves the purity and precipitation resistance of polyolefin resins.

A manufacturing process for a one-component polyurethane-modified epoxy resin emulsion, characterized in that it comprises the following steps: mixing epoxy resin, monohydroxy acrylate, dialkyl maleate, ketone solvent, aprotic polar solvent, and polymerization inhibitor to obtain a mixed solution, wherein the epoxy resin has an epoxy equivalent of ≥ 300 g / equivalent; mixing polyethylene glycol, polyether diol and / or polyester diol, diisocyanate, and organometallic catalyst, and carrying out an addition polymerization reaction to obtain a polyurethane prepolymer; mixing the mixed solution and the polyurethane prepolymer, carrying out an addition reaction, emulsification with the addition of water, and subsequent removal of the ketone solvent to obtain a water-based polyurethane epoxy emulsion.Mixing the water-based polyurethane epoxy emulsion with alkyldiamine, carrying out a Michael addition-ring-opening addition reaction to obtain a one-component polyurethane-modified epoxy resin emulsion, wherein the dialkyl maleate comprises one or more of diethyl maleate, dibutyl maleate and diisooctyl maleate.

The present invention addresses the problem of providing a production method that can be implemented as an industrial production method and that includes a step for efficiently purifying 9,9-bis[9-(2-hydroxyethoxy)-3-phenanthryl]fluorene. As a means for solving the problem, provided is a method for producing a composition containing 9,9-bis[9-(2-hydroxyethoxy)-3-phenanthryl]fluorene, the method including a crystallization step for precipitating crystals of 9,9-bis[9-(2-hydroxyethoxy)-3-phenanthryl]fluorene from a crystallization solution containing 9,9-bis[9-(2-hydroxyethoxy)-3-phenanthryl]fluorene and a C3-6 aliphatic ketone solvent.

The invention relates to the technical field of preparation of polymer microspheres, and discloses a production method and a production system of polymer microspheres, the production method comprises the following steps: (1) in the presence of a mixed solvent, mixing a first monomer, a second monomer and an initiator, and carrying out a polymerization reaction to obtain a polymerization mother solution containing the polymer microspheres; wherein the mixed solvent comprises an ester solvent, a hydrocarbon solvent and a ketone solvent; (2) evaporating and drying the polymerization mother liquor to obtain a gas-phase mixed solvent and polymer microspheres; (3) condensing and optionally separating the gas-phase mixed solvent, and then returning to the step (1); wherein the first monomer has a structure as shown in a formula (i), and R1 is hydrogen or methyl; the second monomer is substituted or unsubstituted aromatic hydrocarbon and / or olefin. According to the method, the polymerization mother liquor can be fully utilized, the quality of the prepared polymer microspheres is improved, the surface of the product is clean, and the particle size of the product is uniform.

Provided is a method for manufacturing a metal wiring in which a coating film remaining between metal wirings can be sufficiently removed in a developing step, and a kit. In a method for manufacturing a metal wiring according to one embodiment, a developing step includes a first developing treatment in which a region other than a dried coating film of a metal wiring is removed by a first developing solution, the first developing solution containing a solvent and an additive (A), the solvent being an organic solvent or water or a mixture thereof, the organic solvent being one or more selected from the group consisting of an alcohol solvent, a ketone solvent, an ester solvent, an amine solvent, and an ether solvent, and the concentration of the additive (A) in the first developing solution being 0.01% by mass or more and 20% by mass or less.

A composition for forming a solid electrolyte layer according to embodiments of the present disclosure includes a ketone based solvent, a nitrile butadiene rubber binder, and inorganic electrolyte particles, wherein the acrylonitrile content in the nitrile butadiene rubber is 25 wt % to 50 wt %. The solid electrolyte layer according to embodiments of the present disclosure includes a ketone-based compound, a nitrile butadiene rubber, and inorganic electrolyte particles.

To provide an inkjet ink that can be adjusted to an appropriate viscosity range and has excellent properties such as continuous and intermittent printing capabilities. [Solution] An inkjet ink is provided comprising a solvent containing a first solvent with an SP value of less than 11, and a second solvent which is an alcohol with an SP value of 11 or more carbon atoms (C1 to C4), and a polyvinyl acetal resin, wherein the ratio of the second solvent to the total amount of the first solvent is 5% by mass or more and 50% by mass or less. The first solvent may contain a ketone-based solvent.

The composition for forming a solid electrolyte layer according to an embodiment of the present invention comprises a ketone solvent, a nitrile rubber binder, and inorganic electrolyte particles, wherein the nitrile rubber contains 25% to 50% by weight of acrylonitrile. The solid electrolyte layer according to an embodiment of the present invention comprises a ketone compound, nitrile rubber, and inorganic electrolyte particles.

This invention relates to the field of organic synthesis technology and discloses a high-yield synthesis method for benzofuran-2,3-dione 3-(O-methyloxime)2-oxime. The method uses o-hydroxyacetophenone as the starting material and includes the following steps: Step 1, the starting material is refluxed with N,N-dimethylformamide dimethyl acetal in an aromatic hydrocarbon solvent to obtain an enamine ketone intermediate; Step 2, the enamine ketone intermediate is nitrosated and oxidatively cyclized using sodium nitrite and tert-butyl nitrite in a ketone solvent; Step 3, the cyclized product is reacted with methoxyamine hydrochloride in an alcohol solvent to obtain the target product. This invention avoids the use of hazardous reagents such as sodium hydride and concentrated nitric acid by constructing an enamine ketone intermediate and employing a mild two-component nitrosation system. The reaction conditions are mild, and post-processing only requires solid-liquid separation. This method has the advantages of high yield, good purity, high safety, and simple operation, making it suitable for industrial production.