271results about How to "Less solvent" patented technology

The present invention provides a method for producing an aqueous dispersion of thermoplastic resin microparticles containing considerably less residual solvent remaining in resin particles, and a toner for electrophotography containing considerably less residual solvent. A self-water-dispersible thermoplastic resin is swollen using an organic solvent having a boiling point lower than 100° C., which does not dissolve but can swell the self-water-dispersible thermoplastic resin, to produce a swollen material and the resulting swollen material is dispersed into an aqueous medium in the form of microparticles to produce an initial aqueous dispersion, and then the organic solvent is removed from the initial aqueous dispersion to prepare a dispersion. A toner for electrophotography contains microparticles obtained by separating microparticles of the self-water-dispersible thermoplastic resin from the aqueous dispersion of thermoplastic resin microparticles and drying the microparticles.

The present invention relates to a process by which a dried carboxylic acid cake is obtained from a slurry or cake carboxylic acid product through the use of at least one counter current wash. More specifically, the present invention relates to a process by which a dried terephthalic acid cake suitable as a starting material for polyester or co-polyester production is obtained from a slurry or cake terephthalic acid product through the use of at least one counter current wash.

The invention discloses a method for preparing a methyl phenyl vinyl silicone resin, which comprises the following steps of: under a condition of a nitrogen atmosphere at the temperature of between 30 and 45 DEG C, dissolving a certain amount of methyl trimethoxy silane, vinyl trimethoxy silane and alkyl dimethoxy silane in ethanol; adjusting the pH of the system to between 2.8 and 3.5; after full reaction, adding the methyl trimethoxy silane, the vinyl trimethoxy silane, the alkyl dimethoxy silane and deionized water into the mixture to perform isothermal reaction for 0.5 to 1 hour at the temperature of between 50 and 60 DEG C; raising the temperature to between 72 and 78 DEG C, performing the isothermal reaction again for 8 to 10 hours, and then dropping an end capping agent and deionized water into the mixture; performing reaction at the temperature of between 72 and 78 DEG C for 6 to 10 hours to obtain a white emulsion; and standing the mixture until complete demixing, separating the mixture to obtain an oily matter at a lower layer, and performing vacuum drying on the oily matter to obtain a product of the methyl phenyl vinyl silicone resin. In the method, the process is simple, the product is easy to separate and purify, the reactions are mild and are easy to control, and the processability is greatly improved.

The invention discloses a new crystal form of lansoprazole and a preparation method and application thereof. The new crystal form of the lansoprazole is easy to prepare. The crystal form of the lansoprazole prepared by the method has high purity and low impurity content; the required amount of a solvent is small, and production cost is low; the preparation method is easy to operate and high in repeatability; reaction conditions are mild, and easy to control; and the target product crystal form can be stably obtained.

An ink composition includes a first saccharide and a second saccharide. The first saccharide is a linear saccharide having 4 or more saccharide units and the second saccharide is at least one selected from the group consisting of trehalose, maltotriose, and a cyclic saccharide.

A coating means supply device, in particular for a paint facility, having a coating means meter that meters coating means to be applied to application equipment. The coating means supply device includes a coating means reservoir for holding the coating means and for supplying the coating means meter with the coating means. During application of coating material to equipment, the coating means reservoir is at ground potential and is located upstream from the coating means meter, which is at high-voltage potential. The reservoir is connected via an insulating path to the coating means meter. The coating means meter is at ground potential when the coating means reservoir supplies coating means to the coating means meter. Before the coating means meter is returned to a high-voltage potential for continued application of coating material, the insulating path is emptied to again insulate the coating means meter from the coating means reservoir.

Epoxy resins that have one or more functional groups that impart an anionic character to the epoxy resins are prepared. The resulting anionic functionalized epoxy resins may be used to produce high solids, epoxy-based dispersions that are capable of being used as a component of a coating bath which can provide to a coating that may be applied to a surface using a variety of techniques.

A docetaxel inclusion complex having improved water-solubility (up to 15 mg/ml) and stability (stability constant Ka=2056M⁻1-13051M⁻¹), comprises docetaxel and hydroxypropyl-beta-cyclodextrin and/or sulfobutyl-beta-cyclodextrin in a ratio of 1:10-150. The method includes steps as follows: docetaxel dissolved in ethanol is added into water solution of cyclodextrin via stirring, until docetaxel is completely dissolved; said solution is filtered in 0.2-04 μm microporous membrane then ethanol is removed through reduced pressure to obtain the inclusion complex in a liquid form; or ethanol, followed by water is removed through reduced pressure, then dried to obtain the inclusion complex in a solid form.

The invention relates to a ceramic casting slurry and a preparation method thereof. The ceramic casting slurry is characterized by comprising a ceramic powder, a mixed solvent of alcohol and ester, a binder, a plasticizer and a dispersing agent; and the ceramic powder accounts for 65-75wt%, and a weight ratio of the ceramic powder to the mixed solvent is 5:2-4:1. The ceramic casting slurry provided by the invention has high solid content; and the mixed solvent of alcohol and ester has low cost, good environment compatibility, and low poison to the human body.

The invention relates to a method of preparing ultrahigh molecular weight polyethylene fiber through gel spinning method. The method comprises the following steps: (1) preparing gel protofilament of ultrahigh molecular weight polyethylene; and (2) processing the gel protofilament through extracting, drying and hot drawing to obtain the ultrahigh molecular weight polyethylene fiber. The method is characterized in that the method also comprises the step of pre-drawing the gel protofilament obtained in the step (1) before the step (2), wherein the pre-drawing time is 2.2-24 times and the total hot drawing time in the step (2) is 30-45 times. The method of the invention can be used to obtain ultrahigh molecular weight polyethylene fiber product with low size and high breaking strength and the production cost is low.

A process for preparing a cyclic organosilane using a solvent that promotes ring-closure reactions between an organosilane compound and a dihalo organic compound is disclosed. The ring-closure reactions may form a 4-, 5- or 6-member cyclic organosilane. The process involves a mixture including a dihalo organic compound, an organosilane having at least two functional groups, a solvent and magnesium (Mg). The two functional groups in the organosilane may include halogen, alkoxy or a combination thereof. In the presence of Mg, a Grignard intermediate is formed from the dihalo organic compound in the mixture. The solvent favors intra-molecular or self-coupling reactions of the Grignard intermediate. The intra-molecular or self-coupling reaction promotes ring-closure reaction of the Grignard intermediate to form the cyclic organosilane.

The invention relates to a preparation process of ornithine aspartate for injection. According to the preparation process, a one-step operation of concentration, desalination and purification is carried out on the obtained reacted raw material liquid. The process used in the invention, which has the advantages of simplicity, short production period, and low energy consumption, is very suitable for the industrialized production of ornithine aspartate injections.

The invention discloses a synthetic method of biquaternary ammonium salt. In the method, ultrasonic waves are introduced into a reaction system in a dispersing manner, and a biquaternary ammonium pentane-1,5 (methylpyrrolidinium) dibromide can be synthesized under the high temperature and high concentration. In the method, the quantity of the used solvent is fewer, the particles of the biquaternary ammonium salt which is generated by the reaction are smaller, so that the following washing, filtering, recrystallization and other operations are very facilitated.

The invention provides a characterization method for polymer molecular weight. The method comprises the following steps: performing a two-dimensional molecular diffusion experiment in a nuclear magnetic resonance technology (namely, two-dimensional diffusion-ordered spectroscopy (2D DOSY)) on a polymer solution with a known molecular weight to obtain a diffusion coefficient, and establishing a standard curve of the polymer molecular weight and the diffusion coefficient; performing a two-dimensional molecular diffusion experiment on a to-be-measured polymer solution with an unknown molecular weight to obtain a diffusion coefficient, and calculating the molecular weight of a to-be-measured polymer and distribution thereof according to the standard curve of the molecular weight of the type of polymer and the diffusion coefficient, wherein the concentration of the to-be-measured polymer solution is controlled at 0.2-1.5mg/mL and the experimental temperature is controlled at 90-150 DEG C according to the molecular size. The method is easy to operate, the needed sample size and solvent amount are very small, the characterization cost is low, and a test result is accurate; moreover, two or more different types of polymers with approximate molecular weights in polymers can be distinguished while the polymer molecular weight and the molecular weight distribution are characterized.

The invention discloses a surface coated lithium ion battery cathode material. The surface coated lithium ion battery cathode material is formed by coating the surface of a cathode active material with a coating agent, wherein the cathode active material comprises one of lithium cobalt oxide, lithium manganate and nickel lithium cobalt oxide or a mixture of more than one of the lithium cobalt oxide, lithium manganate and nickel lithium cobalt oxide; the coating agent is prepared by reacting an agent A with an agent B; the agent A is a saturated solution of acid or a saturated solution of alkali or water; and the agent B is a saline solution which can be hydrolyzed to precipitate when meeting the agent A. The invention has the main characteristics that: the addition of the solution is controlled by utilizing the adsorption of the surface of the particles on the solution, and the adsorbed water on the surfaces of solid particles accounts for the vast majority of the solution in a uniformly mixed solid-liquid system; and moreover, proper conditions are provided to ensure that a hydrolysis reaction is carried out in adsorption layers on the surfaces of the particles, a coating generated in the adsorbed water layers uniformly covers the surfaces of the particles, and an effect of uniformly coating is achieved.

A method for synthesizing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivatives has a step of introducing 6-chloro-6H-dibenz[c,e][1,2]oxaphosphorin or its derivative, an acid compound and water into a reacting chamber to form an organic layer having 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivative and an aqueous layer. Because the acid compound is from an external source and has a catalyzing effect, employing the method can prevent side reaction from occurring and increase yield of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivative. Furthermore, the method is a one-pot operation of hydrolysis, dehydration and cyclization, so the method does not require purification of intermediates. Therefore, the method is time-and cost-saving and requires less organic solvent, resulting in less pollution to the environment.

The invention provides a method for directly vacuum drying and preparing polyimide airgel. The invention adopts the low boiling point solvent to replace the traditional high boiling point solvent, which can be effectively removed in the preparation of the polyimide airgel, and the replaced solvent can be used repeatedly. In addition, a solvent with a high freezing point is used to replace a solvent with a low boiling point. During the vacuum drying process, the solvent is directly sublimated from the solid phase to the gas phase, which avoids the gas-liquid interface and eliminates the capillary tension. The obtained product maintains the pore structure without collapsing. Compared with supercritical drying or freeze-drying process, this method has the advantages of simple operation, high efficiency and low energy consumption, and can be prepared on a large scale, and the obtained polyimide airgel has excellent performance, especially excellent heat insulation performance, and can be used as Insulation material is used.

The invention belongs to the technical field of analysis and detection, and discloses a capillary electrophoresis method for simultaneously separating and detecting stilbene glucoside and anthraquinone component in polygonum multiflorum. The method adopts micellar electrokinetic capillary chromatography to analyze and detect polygonum multiflorum extracting solution to obtain the electrophoresis pattern of stilbene glucoside, emodin, aloeemodin, rhein, chrysophanol or physcion; according to a correction curvilinear equation, the concentration of stilbene glucoside, emodin, aloeemodin, rhein, chrysophanol or physcion is calculated. The invention can simultaneously analyze and detect the stilbene glucoside and anthraquinone component in polygonum multiflorum and is simple, quick and efficient; adopted buffer liquid is mainly aqueous solution, does not need a great quantity of organic solvent and has small pollution and environment protection; a small amount of needed solvent and sample is needed, and analysis cost is low.

The invention discloses a method for extracting and separating the total alkaloids of shiny leaf pricklyash root; the method comprises the following steps: the shiny leaf pricklyash root is crushed, extracted for 1 time to 5 times with acid water-alcohol as a solvent and filtered; the filtrates are combined and decompressed, have the solution removed so that no alcoholic odor exists and are set stewing and delaminated; the supernatant fluid is fetched, and the sediment is repeatedly dissolved by acid water and filtered to obtain a filtrate which is combined with the supernatant fluid, adsorbed by a macroporous resin column and washed by an organic solvent, and then the solvent is recovered to obtain a crude alkaloid product. The method of the invention increases the extraction ratio to more than 93 percent by adding acid for extraction, and macroporous resin is used for separating alkaloids, simple and easy operated, achieving a yield rate about 93 percent.

A coating composition for producing films having improved scratch and mar characteristics. The coating composition incorporates a polyester polycarbamate resin composition, a first cross-linking agent, and a cross-linkable resin to form the film. The resin composition is the reaction product of a first compound having a plurality of hydroxyl groups with a carbamate compound reactive with the hydroxyl groups of the first compound and added in an amount sufficient to form a carbamated intermediary. The carbamated intermediary has at least one primary carbamate group available for cross-linking and has unreacted hydroxyl groups. Then, a silyl compound having a terminal isocyanate group is reacted with the unreacted hydroxyl groups of the carbamated intermediary. The silyl compound also has silylalkoxy groups available for secondary cross-linking. The first cross-linking agent and the cross-linkable resin react with the primary carbamate groups and the silylalkoxy groups, respectively, to produce the film having improved scratch and mar characteristics.

The invention belongs to the technical field of a lithium ion battery, and particularly relates to a preparation method of a cladding material of a lithium ion battery. The preparation method comprises the following steps: stirring a core layer material in a stirring tank; making a cladding layer material into a solution, sol, gel or an emulsion; placing the cladding layer material into an atomizing machine, spraying the cladding layer material onto the surface of the core layer material, and continuously stirring the material; and drying, calcining and crushing the material to obtain the cladding material of the lithium ion battery. Compared with a solid-solid mixing way of the prior art, the mixing way provided by the invention ensures more uniformity in cladding; compared with a liquid-liquid mixing way and a conventional solid-liquid mixing way, the mixing way provided by the invention has the advantages that only the solvent in the sprayed solution is consumed, so that the application amount of the solvent is greatly reduced, and the energy consumption of the subsequent drying process can be reduced.