66 results about "Solvent composition" patented technology

The invention belongs to the technical field of batteries, discloses a battery electrolyte solvent capable of adapting to a wide temperature range and preparation of a battery, and provides application of a mixed organic solvent as an energy storage battery electrolyte solvent, the mixed organic solvent is composed of tetrahydrofuran, 1, 3-dioxolame and 1, 1, 2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether, and the 1, 1, 2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether is composed of tetrahydrofuran, 1, 3-dioxolame and 1, 1, 2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether. The volume percent content of the 1, 2, 2-trifluoroethyl ether is 10%-50%. The solvent composition of the energy storage battery electrolyte is improved, 1, 1, 2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether is introduced into an ether organic solvent (namely tetrahydrofuran and 1, 3-dioxolame) to serve as a diluent, meanwhile, the volume percentage of the diluent is controlled, and the obtained electrolyte solvent formula can adapt to the wide temperature range of the full temperature interval of-130 DEG C to 60 DEG C, so that the energy storage battery electrolyte is suitable for being used as an energy storage battery electrolyte. And the problem of battery failure of the current energy storage battery under the extremely low-temperature and high-temperature conditions can be effectively solved.

SOLVENT COMPOSITIONS The present invention relates to a solvent composition for solvent-based paints or other coatings characterized in that it comprises a combination of dimethyl glutarate and at least one other compound selected from isobutyl acetate, ethyl lactate, dimethyl 2-methylglutarate, 2-methyltetrahydrofuran, ethyl acetate, cyclopentyl methyl ether, dithoxymethane, dimethyl carbonate, dimethyl succinate, benzyl alcohol, dimethyl adipate, and glyceryl triacetate. Fig. 1

A solvent composition for carbon capture is provided. According to a preferred embodiment, the solvent used for carbon capture comprises at least two of the following: diethylaminoethanol (DEAE), hexa

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.

The application relates to the technical field of photovoltaic cells, in particular to a solvent composition, a perovskite thin film and a preparation method thereof and a solar cell. The solvent composition comprises: a main solvent with a boiling point greater than 150 DEG C, the main solvent being selected from at least one of a perfluoroalkane compound and a perfluoro tertiary amine compound; an extraction solvent with a boiling point greater than 150 DEG C, the extraction solvent being selected from at least one of an aromatic ether compound, a halogenated aromatic hydrocarbon compound and an ester compound; and an adjusting solvent with a polarity between the polarities of the main solvent and the extraction solvent. The solvent composition provided by the application realizes mild and controllable extraction through the synergistic effect of the main solvent, the extraction solvent and the adjusting solvent, improves the crystallization quality of the thin film, the temperature of solvent bath annealing treatment can reach above the conversion temperature of the photoactive phase of the perovskite thin film, the phase transition is sufficient, and the photoelectric performance of the device is improved.

A method for monitoring the solvent composition in a liquid chromatography system, during gradient elution with a mobile phase in a fluid conduit, the mobile phase consisting essentially of a plurality of known solvents, said liquid chromatography system comprising a flow sensor, said method comprising passing the mobile phase by the flow sensor at a known flow rate; obtaining a measurement, via the flow sensor, of a transport property of the mobile phase; and converting the measurement into a solvent composition using a pre-established correlation.

To provide a method and an apparatus for monitoring a solvent composition together with a mobile phase in a fluid conduit during gradient elution in a liquid chromatography system.SOLUTION: The mobile phase of the liquid chromatography system 6 is composed of a plurality of known solvents, and the liquid chromatography system includes a thermal flow sensor 20. The mobile phase is passed by the thermal flow sensor at a known flow rate, a measurement of a transport property of the mobile phase is obtained via the thermal flow sensor, and the measurement is converted to a solvent composition using a pre-established correlation.SELECTED DRAWING: Figure 1

The present disclosure relates to the technical field of detergents. Provided is a dry cleaning solvent composition. The dry cleaning solvent composition comprises a saturated cyclosiloxane, a polyol, water and an organophosphorus liquid flame retardant. In the present disclosure, by means of the synergetic combination of the saturated cyclosiloxane, the polyol, water and the organophosphorus liquid flame retardant, the obtained dry cleaning solvent composition has a good removal effect on water-soluble stains, oil-soluble stains and pigment stains, and also has good fire resistance and relatively high safety.

The invention discloses a method for preparing poly (cyclohexane dioctyl phthalate) glycol ester from waste PET (polyethylene terephthalate). In particular to a solvent composition for dissolving PET (polyethylene terephthalate), which is characterized by comprising a first solvent and a second solvent, the first solvent is a halogenated alcohol 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 the oxygen atom number of 2 to 4; 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. The method has remarkable advantages in the aspects of raw material adaptability, reaction efficiency and industrial potential, and efficient conversion from low-end waste PET to high-added-value PECHD is realized.

The invention discloses a platinum-loaded mesoporous carbon catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts. According to the preparation method disclosed by the invention, the infiltration angle between the mesoporous carbon and water is adjusted by pre-treating the mesoporous carbon, so that the accurate regulation and control of the proportions of platinum nanoparticles inside and outside the pore channels of the mesoporous carbon carrier are realized by regulating and controlling the solvent composition of the platinum salt solution; and the platinum nanoparticles outside the pore channels can be coated with a complexing agent aqueous solution in a targeted manner, so that a miscellaneous carbon atom layer is formed on the surfaces of the platinum nanoparticles outside the pore channels. The miscellaneous carbon atom layer not only can reduce the activity attenuation of platinum nanoparticles outside the pore channels caused by sulfonate radical poisoning, but also can effectively inhibit the dissolution of the platinum nanoparticles in the oxygen reduction process, and finally, the stability of the catalyst is far superior to that of a commercial platinum-carbon catalyst.

The invention provides an extraction solvent composition for simultaneously extracting fat-soluble vitamins and water-soluble vitamins and application of the extraction solvent composition, and belongs to the technical field of vitamin extraction and detection. The extraction solvent composition comprises an acid and a polar aprotic solvent; the acid comprises medium-strong acid or strong acid. The extraction solvent composition comprises the acid and the polar aprotic solvent, so that the extraction solvent composition can extract fat-soluble vitamins and water-soluble vitamins at the same time, the pretreatment process of extraction and detection of vitamins in compound / composite vitamin products is simplified, the time is saved, the method is simple, and the efficiency is high.

The invention discloses a lithium battery fast charging electrolyte, which comprises an organic solvent, a lithium salt and an additive according to a mass ratio of (65-85): (10-25): (3-15), the organic solvent is composed of carboxylic ester, cyclic carbonate and chain carbonate in a mass ratio of (20-40): (10-20): (40-60); the lithium salt is a compound of lithium hexafluorophosphate (LiPF6) and lithium bis (oxalate) borate (LiBOB) in a mass ratio of (5-8): (1-3); the additive is one or two of 1, 3-propanedithiol, 2, 3-butanedithiol and 1, 4-butanedithiol, the addition amount of the additive is 0.5%-3% of the total mass of the electrolyte, and the thiol compound can capture high-temperature free radicals and inhibit solvent decomposition. According to the invention, the solvent composition of the fast-charging electrolyte is mainly protected, and the fast-charging and fast-discharging performance and the high-temperature stability are synergistically improved through the specific ratio of the lithium salt compound (LiPF6 and LiBOB) and the additive combination (thiol compounds and fluoro carboxylic ester derivatives) and all the components.

This disclosure describes a mixer 50 for a liquid chromatography system. The mixer includes a flow distributor 52, a mixing disk 54, and a flow collector 56. The mixer includes an inlet face, an outlet face, and a plurality of channels, each channel having an inlet end at the inlet face and an outlet end at the outlet face. The channels have anisotropic flow direction between the inlet and outlet faces. The component solvent flow received at the flow distributor 52 is distributed on the inlet face of the mixing disk 54, and the flow collector 56 collects the distributed solvent composition flow after passing through the mixing disk 54. The mixing disk 54 can include a dispersive medium having a random porous structure. The residence time distribution of the mixer can depend on the structure of the channels between the inlet and outlet faces of the mixing disk.

The invention discloses a preparation method of an ITO transparent conductive film, and belongs to the technical field of ITO film preparation. The preparation method comprises the following steps: mixing ITO nano powder, an organic solvent and a dispersing agent, and performing ball-milling dispersion to obtain ITO slurry; 2) casting the ITO slurry onto a substrate to form an ITO wet film; carrying out gradient drying on the ITO wet film to obtain a precursor film; and carrying out first-stage annealing on the precursor thin film in a nitrogen atmosphere, and then carrying out second-stage annealing in an oxygen-containing atmosphere, so as to obtain the ITO transparent conductive thin film after annealing. According to the method, the ITO slurry solvent composition is optimized, and the dispersing agent and the ball-milling dispersing process are combined, so that agglomeration of ITO nano particles is effectively restrained, and preparation of the low-surface-roughness ITO thin film is achieved.

Cleaning solvent blends comprising an HCFO such as l-chloro-2,3,3,- trifluoropropene; trans-dichloroethylene; and a high boiling HEE such as HFE-7300; have utility as a non-flammable, low-global warming potential, azeotrope-like cleaning solvent compositions. Additional solvent ingredients may include surfactants and co-solvents. A method for cleaning articles of soiling substances comprises contacting the articles with the solvent composition by any suitable means such as a spray delivered by a propellant gas, or by contact with liquid and / or vapor solvent compositions, as in a conventional vapor degreaser apparatus, and removing the composition from the articles.

This invention discloses an aluminum-containing heavy water-based electrolyte, its preparation method, and its applications. The electrolyte comprises a solvent and a solute. The solvent includes heavy water, a deuterated solvent, and a low-barrier hydrogen bond reconstructing agent. The solute comprises a main aluminum salt and an auxiliary monovalent metal salt. This electrolyte can construct low-barrier hydrogen bonds in solution by controlling the solvent composition, significantly reducing the activity of water in the solution, improving the electrochemical stability of the solution, and suppressing side reactions. Simultaneously, it improves the electrochemical reaction behavior of aluminum in the solution and at the electrolyte / electrode interface, which is beneficial for improving the electrochemical deposition efficiency of aluminum in aqueous solution.

Disclosed is an ink comprising: (a) a solvent composition; and (b) a pigment dispersion; wherein the solvent composition comprises soybean methyl ester, diisobutyl succinate, diisobutyl glutarate, and diisobutyl adipate, the soybean methyl ester being present in an amount of 30% to 75% by weight based on the total weight of the ink, and wherein the pigment dispersion comprises a pigment and a binder, the binder comprises a poly (vinyl chloride-vinyl acetate) copolymer. A process for producing the ink, a printing method, and a printed article are also disclosed.

The application discloses a new type of high-performance liquid chromatography-tandem mass spectrometry analysis method for detecting lanreotide in human plasma, enriches the lanreotide by using a liquid-liquid extraction method, and the quantitative lower limit is 0.05 ng / mL. By liquid-liquid extraction treatment, the interfering substances in human plasma can be removed, and the matrix effect is improved. The solvent composition and pH value of the liquid-liquid extraction are optimized, and the purpose of effective extraction is achieved. The lanreotide standard is used to prepare a standard curve, and the result is corrected by using the lanreotide isotope internal standard, and the detection result has good accuracy. Without additional preparation of antibody reagents, the operation is simple. The method has high sensitivity, specificity and reproducibility, and has many advantages compared with the traditional radioimmunoassay.

The present invention provides a solvent composition formulated to dissolve hardened photoresist on a semiconductor surface.SOLUTION: The solvent composition includes about 1 to 30 wt.% of at least one alkanolamine, about 10 to 95 wt.% of at least one ethylene glycol ether, and 0 to about 1 wt.% of an N, N-disubstituted hydroxylamine. The N, N-disubstituted hydroxylamine is selected on the basis of at least one alkanolamine. Specifically, the N, N-disubstituted hydroxylamine is alkanol substituted in any solvent composition comprising N-methyldiethanolamine.SELECTED DRAWING: Figure 6

This invention relates to solvent compositions comprising alkyl glycol ester type solvents and glycol type solvents, non-aqueous solvent delivery formulations comprising solvent compositions and urease inhibitors dissolved in solvent compositions, fertilizers comprising urea-based components and non-aqueous solvent delivery formulations, and the use of fertilizers in agricultural applications.

This invention discloses a rapid preparation method for porous carbon aerogels for supercapacitors, comprising the following steps: Step 1: Preparation of polyacrylonitrile solution; Step 2: Atomized phase inversion; Step 3: Filtration and washing; Step 4: Drying; Step 5: Thermal crosslinking; Step 6: Carbonization. The spray phase inversion method employed in this invention is simple to operate and can efficiently and rapidly produce porous carbon aerogels continuously. The structure of the final porous carbon aerogel can be controlled by adjusting the solvent composition of the polymer solution, the solvent composition of the coagulation bath, or the spray phase inversion conditions (temperature, pressure), thereby affecting its electrochemical performance. The prepared porous carbon aerogel, due to its continuous carbon aerogel framework and porous interconnected channel structure, possesses an excellent electronic conductivity network and rapid ion transport pathways, which improve the rate performance and cycle stability of the material.

The invention relates to the technical field of batteries, in particular to a low-concentration electrolyte and a method for improving wettability of the electrolyte. The low-concentration electrolyte is prepared by adding a corresponding type of solvent into the basic electrolyte according to the solvent composition of the basic electrolyte and diluting, and after the low-concentration electrolyte is injected into the battery cell and the solvent is volatilized through high-temperature standing, the total volume of the solvent of the residual electrolyte is the same as the total volume of the solvent of the basic electrolyte. And the volume ratio of the solvents in the residual electrolyte is the same as the volume ratio of the solvents in the basic electrolyte. The method is obtained by adjusting the concentration of the basic electrolyte, the wettability of the basic electrolyte is improved, the method has wide applicability, and the electrolyte with different application scenes can be obtained only by changing the solvent proportion.

This invention provides a method for preparing natural nanophases of a Uyghur medicine compound preparation for treating eczema and its application. Based on a patent (CN201911308259.1) for a compound preparation for treating skin inflammation, this method regulates the solvent composition, concentration conditions, and mixing method of the extraction system to form a stable multiphase structure. Further, differential centrifugation is used to achieve directional separation of phases with different particle sizes, thereby obtaining natural nanophases. The obtained natural nanophases enrich the active ingredients in the compound preparation, significantly reduce cytotoxicity, and enhance biocompatibility. Simultaneously, they significantly inhibit NO production and exhibit eczema-related antibacterial activity, improving drug absorption and utilization efficiency, thus demonstrating superior eczema-related biological activity. This method also addresses the issue of the darker color of the product obtained from the original preparation process, improving the acceptability of the preparation and medication adherence.

The invention discloses multistage amine carbon chain microspheres, a preparation method, a chromatographic column and application. The multistage amine carbon chain microspheres are microspheres of which the surface modification structure is a compound shown as a formula (I). The microspheres not only have the same hydrophilic effect as a traditional amino chromatographic column filler, but also can generate an anion exchange effect through a secondary amine or tertiary amine structure, and can effectively separate acarbose and impurities thereof in combination with steric hindrance selectivity generated by a long-chain structure, the peak separation degree is greater than 2.0, and a base line is completely separated. Meanwhile, the multistage amine carbon chain microsphere is simple in preparation process, a chromatographic column taking the multistage amine carbon chain microsphere as a filler is insensitive to column temperature, pH and solvent composition, the method is easy to develop, the multistage amine carbon chain microsphere can be used for daily analysis, the analysis efficiency is high, and the multistage amine carbon chain microsphere has a good industrial application prospect. Formula (I)

The present invention relates to an organic solvent composition and a paint composition including the same, and more particularly, an organic solvent composition including 50 to 75 wt % of C10 aromatic hydrocarbon, 25 to 40 wt % of C9 aromatic hydrocarbon, and less than 150 ppm of naphthalene, in which a weight ratio of trimethylbenzene and tetramethylbenzene is 50:50 to 90:10.

Disclosed is an ink comprising: (a) a solvent composition; and (b) a pigment dispersion; wherein the solvent composition comprises diisobutyl succinate, diisobutyl glutarate, and diisobutyl adipate wherein the total amount of diisobutyl succinate, diisobutyl glutarate, and diisobutyl adipate is 50 wt% or more based on the total weight of the ink, and wherein the pigment dispersion comprises a pigment and a binder, the binder comprises a poly (vinyl chloride-vinyl acetate) copolymer. A process for producing the ink, a printing method, and a printed article are also disclosed.

The invention belongs to the technical field of pharmaceutical analysis, and particularly relates to a method for improving the stability of a vitamin D3 related substance impurity reference substance, which comprises the following steps of: optimizing solvent composition (selecting an isooctane-isopropanol mixed solution and adding 2, 6-butylated hydroxytoluene), subpackaging under the protection of nitrogen, and freezing and storing at the temperature of 20 DEG C below zero to obtain the vitamin D3 related substance impurity reference substance. The reference substance solution of the impurity C and the impurity E of the vitamin D3 can be stably stored at-20 DEG C for more than 12 months and cannot deteriorate after being transported at normal temperature for 3-7 days, the problem that reference substances in the prior art are prone to deteriorate due to the influence of high temperature, illumination and oxygen is solved, correction factors are kept stable for a long time, and the reliability of detection data is guaranteed.

The present invention is in the field of nitrification inhibitor compositions and fertilizer formulations and, in one aspect, relates to a composition for reducing nitrification comprising (a) at least one specific alkoxypyrazole compound of formula (I), (b) at least one solvent wherein the solvent comprises at least one monomeric alcohol (b1) and optionally at least one specific N, N-dimethylpyrazole compound of formula (II), an N, N-dialkylamide (b2); wherein the composition comprises compound (a) in an amount of up to 47 wt.-% and at least one solvent (b) in an amount of at least 53 wt.-%, relative to the total weight of (a) and (b). Furthermore, the present invention relates to a solid fertilizer composition comprising such a composition; a method for producing a solid nitrogen-containing fertilizer composition according to the invention; use of a solvent composition comprising at least one monomeric alcohol and optionally at least one N, N-dialkylamide of formula (II) for stabilizing an alkoxypyrazole compound of formula (I) in a solid fertilizer composition; and a use of the composition or solid fertilizer composition or a method for reducing nitrification.

The following generally relates to recycling polymer waste materials, and more particularly to selecting a solvent, or solvent mixture, to be used to separate polymers from a polymer waste material as pail of a recycling process. For example, if a polymer waste material including multiple individual polymers is not first separated into individual polymers, the recycling process may not produce a useful product. In some embodiments, one or more processors determine a solvent composition and temperature to use the solvent composition at to separate individual polymers out of the polymer waste material.

The invention discloses a solvent composition and positive electrode slurry. The solvent composition comprises a first component and a second component, wherein the first component comprises a silicon-based difluorophosphate compound; the second component is prepared from one of beta-alkoxy propionamide and alpha-alkoxy acetamide, and the second component is prepared from one of beta-alkoxy propionamide and alpha-alkoxy acetamide; wherein the mass ratio of the first component to the second component is (0.2: 100)-(10: 100). Therefore, the positive electrode slurry adopting the solvent composition has relatively excellent stability, the baking effect after coating is relatively good, and the cycle performance of the battery can be improved by the decomposition product of the first component.