44 results about "Which solvents" patented technology

A method of solvent recovery / reuse in printing or coating with a printing ink composition containing solvents which comprises: a step in which solvents which have volatilized are recovered with a solvent recovery apparatus; a step in which the solvents obtained are separated by multistage distillation into single solvents and / or two or more azeotropic compositions; and a step in which the solvents recovered are reused as a raw printing ink material and / or a raw material for a diluent solvent.

Disclosed is a method for producing a single crystal thin film of an organic semiconductor compound, which comprises a step for forming a liquid film (9) on a substrate (2) by coating the substrate (2) with an organic solvent having a dielectric constant of not less than 4.5 in which solvent an organic semiconductor compound can be dissolved, a step for supplying and dissolving the organic semiconductor compound into the liquid film (9), and a step for crystallizing the organic semiconductor compound in the organic solvent.

A method is provided for inhibiting or preventing toxicity and other unwanted effects (a) caused by solvents for pharmaceuticals which solvents or emulsifier which contain amphiphilic molecules such as polyethoxylated oils or a derivative thereof, or (b) caused by a drug in a vehicle containing amphiphilic molecules such as phopholipids or derivative thereof, emptying a complement inhibitor. Drug compositions containing amphiphilic molecules, or derivatives thereof and a complement inhibitor, and pharmaceutical compositions including a drug, solvent or carrier containing amphiphilic molecules or derivatives thereof, and a complement inhibitor are also provided.

The water dispersible resin of the present invention is contained in a base component of a two-component thermosetting resin composition. The water dispersible resin is prepared by dispersing a solvent resin in water, which solvent resin is obtained by solution polymerization, carried out in two or more stages, of a monomer mixture containing a polyfunctional monomer, an acid group-containing monomer, and a hydroxyl group-containing monomer, the polyfunctional monomer having a plurality of vinyl groups in its single molecule. The monomer mixture contains the polyfunctional monomer by not less than 0.1% by weight but not more than 3% by weight, and the water dispersible resin thus obtained has an acid value of solid content of not less than 10 mgKOH / g but not more than 45 mgKOH / g, a hydroxyl value of solid content of not less than 50 but not more than 200, and a viscosity of not less than 50 mPa·s but not more than 10,000 mPa·s when a nonvolatile content is 45% by weight. This makes it possible to provide a two-component thermosetting resin composition, which is easily dealt with, formed into a coating film having an excellent appearance, and further, has an excellent pot life.

In solvent-dominated recovery processes for recovering In situ oil, including bitumen, the produced fluid stream includes oil and solvent. The solvent is preferably recovered and reinjected into the reservoir. In previously described methods, solvent is removed from the oil / solvent mixture. In the present method, the oil / solvent mixture is first separated into a heavier stream and a lighter stream from which solvent is independently removed.

An automated system for handling components of a chromatographic system, comprising: one or more trap columns each having sorbent material therein; a robotic system for moving a trap column from a storage position to an operating position where the trap column is connected in a liquid pathway along which solvent is flowed in operation to a liquid chromatography (LC) column; and an optical sensor for sensing one or more parameters of the trap column. Sensed parameters can include: a presence or absence of a trap column in the operating position, a position or orientation of the trap column, a fluid level in the trap column, the presence and position of a sorbent material in the trap column, the condition of the trap column and / or whether the trap column is new or used.

The invention discloses a preparation method of 2,3,5,6-tetrafluoro-p-methylbenzyl alcohol, which belongs to the preparation technology of 2,3,5,6-tetrafluoro-p-methylbenzyl alcohol. The method is prepared by taking 2,3,5,6-tetrachloroterephthaloyl chloride as a raw material through fluorination, esterification, reduction, bromination and reduction. The fluorinating agent of the fluorination reaction is potassium fluoride, etc., the solvent is sulfolane, etc., the catalyst is calixarene, etc., and the reaction temperature is 40°C-230°C. Esterification The esterification agent is aliphatic alcohol or aromatic alcohol, and the reaction temperature is 20°C to 120°C. Reduction reaction of ester The reducing agent is sodium borohydride, etc., the solvent is sulfolane, etc., and the reaction temperature is -10°C to 60°C. The bromination agent for the bromination reaction is HBr acid, the solvent is dichloromethane, and the reaction temperature is 30°C to 160°C. The reducing agent of the bromide reduction reaction is magnesium powder, etc., the solvent is fatty alcohol, water, chloride, etc., and the reaction temperature is -10°C to 50°C. The invention has the advantages of simple process, low production cost, high product yield and purity, and is suitable for industrialized production.

A filter system has a first filter from which solvent is recovered in a cleaning cycle using a rinse fluid in forward flow, and from which particulates are removed using flush gas in reverse flow. At least part of the solvent and the flush gas are recycled to the system, and in still further preferred aspects, filtration of the solvent continues during the cleaning cycle via a bypass circuit through which the solvent is routed to a second filter.

An objective of the present invention is to suppress bumping in the distillation still so as to collect a high purity solvent containing no impurities. A solvent vapor valve 21 is disposed in a solvent vapor withdrawal conduit 20 through which solvent vapor is transferred from inside the distillation still 10 to an inner pipe 31 of a double-tube structure 30 which is a heat exchange section. Also, a thermistor 14 is disposed in an upper space in the distillation still 10. After a heating chamber 11 starts heating the solvent, the start of boiling is determined by a sudden rise in temperature detected by the thermistor 14, and shortly thereafter, the solvent vapor valve 21 is closed to fill the distillation still 10 with the solvent vapor. The solvent vapor actively generated by bumping is condensed and liquefied on the cold inner surfaces of a ceiling wall and a sidewall of the distillation still 10, and concurrently, the heat of condensation is provided to the ceiling wall surface and the sidewall surface, thereby accelerating the temperature rise thereof. Bumping stops when the temperatures of the surfaces of the ceiling wall and the sidewall have reached a sufficiently high temperature, and thereafter the valve 21 is opened to transfer the solvent vapor to the double-tube structure 30 functioning as the heat exchange section.

The present invention relates to an active crystalline material, especially an active multicomponent crystalline material such as a salt or a cocrystal, which may be made by dispersing precursor components of the active crystalline material in a liquid medium which comprises an anti-solvent, maintaining the dispersion for a period during which the active crystalline material is formed, and, during said period, exposing the dispersion to a solvent, which solvent being present in the liquid medium in a minor proportion by weight thereof.

This invention relates to solvent systems useful for foam nozzle cleaning, which solvent systems are formed by combining at least a brominated compound, an alcohol and a stabilizer in amounts such that the solvent system has no flash point.

A spent nuclear fuel is reprocessed by dissolving a spent nuclear fuel in an aqueous nitric acid solution and separating and recovering nuclides contained in the resulting fuel solution by solvent extraction. A spent nuclear fuel reprocessing method includes: an electrolytic valence adjustment step in which nuclides contained in the fuel solution is electrolytically reduced without removing fission products or minor actinides until valence of plutonium is at a level at which solvent extraction efficiency is low by using the valence of plutonium contained in the fuel solution as a parameter; and a nuclide separation step in which, by using an extraction solvent which extracts uranium contained in the fuel solution, uranium is distributed from the fuel solution subjected to the electrolytic valence adjustment step to the extraction solvent.

An electrically-conductive composition essentially has (a) an electrically-conductive material consisting essentially of silver nanoparticles that have a d50 of less than or equal to 60 μm and a d90 of less than or equal to 500 μm; (b) particles having a Young's modulus that is different from the Young's modulus of the (a) electrically-conductive material by at least 10%, which (b) particles have a d50 of 500 nm to 300 μm and a polydispersity coefficient of less than or equal to 3; (c) a binder material that is non-electrically-conductive; and (d) a solvent medium in an amount of less than or equal to 90 weight %, based on the total composition weight, which solvent medium is at least 50 weight % water. The weight ratio of the (b) particles to the (a) electrically-conductive material is at least 0.01:1 and up to and including 7:1.

A process for introducing a solution into an evaporative cooling apparatus (14), said process comprising a) positioning a selectively permeable membrane (16) between a first solution (18) and a second solution (20) having a higher solute concentration than the first solution (18), such that the solvent from the first solution (18) flows across the selectively permeable membrane (16) to dilute the second solution (20), b) introducing the second solution into an evaporative cooling apparatus (14) in which solvent is removed from the second solution (20) by evaporation, and c) recycling the second solution (20) from step b) to step a) to draw solvent from the first solution (18).