595 results about "Solubility" patented technology

The invention discloses a method and a system for identifying mixed gas in transformer oil, a product and a medium, and relates to the technical field of testing or analyzing materials by means of measuring chemical or physical properties of the materials, and the method comprises the following steps: acquiring an internal structure diagram of a transformer, determining spatial position relations of parts and corresponding temperature distribution characteristics, and obtaining solubility differences of different spatial positions according to the spatial position relations and the corresponding temperature distribution characteristics. During operation, mixed gas concentration data of a plurality of detection points are collected, initial gas concentration data are recorded when an operation threshold range is deviated, and gas concentration change data are corrected according to solubility differences of different temperature zones. Calculating gas concentration space-time distribution characteristics, and determining a gas accumulation area according to the gas concentration space-time distribution characteristics and a space position relation. And separating the mixed gas components by using a gas chromatographic method, comparing preset gas types with the content of each component, and determining the corresponding gas type of each internal region. By implementing the method, the accuracy of identifying the types of the mixed gas in the transformer oil can be improved.

A radiation-sensitive composition containing: a polymer that undergoes a change in solubility in a developing solution when subjected to the action of an acid; and a compound represented by formula (1).

The invention belongs to the technical field of 4-BMA mother liquor recycling, and relates to a method for recycling 4-BMA in mother liquor by adopting a membrane treatment technology, which comprises the following steps: dropwise adding isopropylamine into 4-BMA refining wastewater, adjusting the pH value to 8-9, selecting a proper filter membrane, and filtering by using membrane filtering equipment at a certain temperature to obtain concentrated liquor and permeate liquid; the maximum separation effect is achieved by controlling the volume ratio of the permeate to the concentrated solution, and the 4-BMA isopropylamine salt concentrated solution is obtained; ethyl acetate is added into the 4-BMA isopropylamine salt concentrated solution for extraction, then 13.5 wt% hydrochloric acid is dropwise added for crystallization, and a 4-BMA product is obtained. According to different solubility of 4-BMA, isomer and isopropylamine after salification in water, the isomer salt is dissolved in water to be removed, 4-BMA salt with high purity is obtained, qualified 4-BMA with the purity larger than or equal to 98.00% is obtained through acid adjustment, and the purity of 4-BMA is larger than or equal to 98.00%. The method is low in energy consumption, simple in process, simpler to operate and easier to convert.

This resist composition contains: a resin component (A1), the solubility of which in a developer solution changes due to the action of an acid; and a compound (D0) represented by general formula (d0-1). In the formula, Ar is an aromatic ring; OH is a hydroxy group; Xd01 is an iodine atom, a fluorine atom, a bromine atom, or a fluorinated alkyl group; Ld is a single bond or a divalent linking group; Z+ is S+ or I+; and Xd02 is an iodine atom, a fluorine atom, a bromine atom, or a fluorinated alkyl group. [Chemical formula 1]

The invention provides a manganese sulfate purification method based on a membrane separation technology, and relates to the technical field of manganese sulfate purification, the manganese sulfate purification method comprises the following steps: S1, pretreatment and solution blending: starting a stirring tank for stirring at a stirring speed of 230-500 RPM; adding a raw material solution into the stirring tank; adding a mixed solvent into the raw material solution, wherein the total adding amount of the mixed solvent accounts for 1-2% of the mass of the raw material solution; according to the preparation method, a mixed solvent and a stability additive are introduced in the raw material solution preparation stage, and the stirring speed and the reaction temperature are regulated and controlled, so that the uniformity and the system stability of raw material components are enhanced, the solubility and the dispersity of impurity components are reduced, and subsequent impurities are promoted to be thoroughly and sufficiently settled; in the chemical precipitation stage, precipitation of the impurities is accelerated by controlling the proportion of a precipitator, the reaction temperature and the stirring speed, so that the precipitation rate and the particle size uniformity of precipitated particles are improved, and the impurities are fully separated from a main solution.

The application discloses a solid dispersion of tolvaptan, and the raw material composition of the solid dispersion comprises tolvaptan, a hydrophilic carrier material, a hydrogen carbonate, and can further comprise a plasticizer and / or an organic acid. The solid dispersion is prepared by a hot melt extrusion process, the solubility of tolvaptan raw material can be obviously increased, and the oral preparation prepared from the solid dispersion can meet the sink condition of dissolution detection, and the accuracy of the detection result is ensured.

A chemically amplified negative resist composition containing (A) a base polymer containing a polymer which contains a repeat unit having formula (A1) and a repeat unit having formula (A2), the polymer being adapted to decrease its solubility in an aqueous alkaline solution under an action of an acid.

The invention belongs to the field of medicine, health and health, and particularly relates to a preparation method for controllably synthesizing polysulfonic acid mucopolysaccharide with different molecular weights, which comprises the following steps: reaction, acid-base neutralization, formamide removal by alcohol precipitation, desalting and freeze-drying. Wherein the reaction process comprises the following steps: adding sodium chondroitin sulfate and a pyridine sulfur trioxide complex into a mixed solvent of N, N-dimethylformamide and dimethyl sulfoxide, and heating for reaction to obtain a reaction mixture; the volume fraction of the dimethyl sulfoxide in the mixed solvent is 0-80%. According to the method, the low-price pyridine sulfur trioxide complex (about 150 yuan / 500g) is used, and the ratio of N, N-dimethylformamide to dimethyl sulfoxide in the mixed solvent is adjusted, so that the solubility of the chondroitin sulfate sodium and the pyridine sulfur trioxide complex is changed, and the polysulfonic acid mucopolysaccharide with molecular weights in different ranges can be regulated and generated.

A battery includes a cathode comprising a disordered rock salt structure and an electrolyte. The electrolyte includes a solvating solvent and a lithium salt soluble in the solvating solvent. The electrolyte includes a diluent that is miscible with the solvating solvent. The solubility of the lithium salt in the solvating solvent is at least 5 times the solubility in the diluent, and the solvating solvent and the diluent are present in the battery at a diluent / solvating solvent ratio of 0.1 to less than 3.0.

The invention provides a single-component cleaning agent composition and a preparation method and application thereof.The single-component cleaning agent composition is prepared from, by weight, 0.5-10 parts of inorganic alkali, 0.5-8 parts of alkali-soluble wetting agent, 0.1-1 part of polymeric dispersant, 1-5 parts of oxidizing agent, 1-6 parts of pH buffering agent and 80-100 parts of water; in a liquid phase environment with a pH value of 10-12 and a temperature of 25 + / -2 DEG C, the solubility of the alkali-soluble wetting agent is 400-1000 g / L. The formula of the single-component cleaning agent is finely designed, and through reasonable combination and proportion control of multiple components, the obtained single-component cleaning agent composition can provide an efficient cleaning effect for silicon wafers under the conditions of stable pH value and temperature.

Provided is a novel means for delivering an active ingredient into the skin. An external preparation composition for the skin, which is characterized by containing composite microneedle-like crystals in which a polymer active ingredient is included in crystals of a biosoluble substance; a method for producing a taurine composite microneedle-like crystal in which a polymer active ingredient is encapsulated in a crystal, the method being characterized by comprising a step for inducing crystal growth in an environment in which an aqueous solution (A) in which taurine, which is a biosoluble substance, is dissolved in water, and a liquid substance (B) having a low solubility in taurine are mixed or brought into contact with each other, by dissolving or dispersing a polymer active ingredient in the aqueous solution (A) or the liquid substance (B), the polymer active ingredient is enclosed in the crystal along with the growth of the crystal.

The invention relates to the technical field of silver powder synthesis, in particular to a green synthesis process of high-purity silver powder. The silver powder synthesized by the process overcomes the problems of low purity and poor dispersity of the silver powder, and the synthesis process is green. By means of the characteristic that silver ions and carbonate ions generate low-solubility silver carbonate precipitates in the precipitation treatment stage in S1 and in combination with reduction treatment in S2, preliminary purification and further impurity removal are conducted under specific reaction conditions, interference of impurity metal ions is effectively inhibited, and the purity of the silver powder is improved; on the aspect of optimizing the comprehensive performance of the silver powder, a reverse micelle structure is constructed by utilizing various substances in the S2 reduction process, and the growth of silver nanoparticles is regulated and controlled; adjusting the dosage of related substances, illumination and reduction time; controlling synthesis parameters of the tea saponin fatty acid ester; and key parameters are adjusted in the S3 calcination stage, and finally the silver powder is good in specific surface area, average particle size and stability and has good dispersity and pore diameter structure.

The application provides a method for synchronously separating active substances of Haematococcus pluvialis, and relates to the technical field of natural product extraction, and comprises an extraction phase with a mass ratio of 20%-50%, and the balance is water; the extraction phase is a quaternary phosphonium ionic liquid or a eutectic solvent; the quaternary phosphonium ionic liquid comprises tetrabutylphosphonium trifluoroacetate or tributyl octyl phosphonium bromide; and the eutectic solvent comprises a quaternary phosphonium ionic liquid and a fatty acid with a molar ratio of 1:1-5:3. The extraction phase has weak acidity, the ability to form van der Waals forces and hydrogen bond interactions, the Haematococcus pluvialis cell wall breaking effect and high solubility. The extraction phase can form liquid-liquid phase separation, can realize the synchronous extraction of Haematococcus pluvialis cell wall breaking, astaxanthin, carbohydrates and proteins, and has no organic solvent, is simple to operate, has short extraction time and high extraction efficiency. The method solves the technical problem that the extraction agent in the prior art cannot effectively separate multiple active substances of Haematococcus pluvialis.

The present invention relates to a composition of aliphatic emulsion preparation for malignant thoracicoabdominal hydrops and its preparation method. It is made up by adopting pure natural anticancer medicine elemene and at least one polysaccharide selected from ginseng polysaccharide, astragalus polysaccharide, acanthopanax polysaccharide and lyceum polysaccharide as raw material. Said invention can obviously raise solubility of medicine, increase stability of medicine, effectively remove and kill cancer cells and raise immunity of body.

The invention relates to the technical field of analytical chemistry, in particular to a high performance liquid chromatography detection method of a ridecevir intermediate GS-441524, which comprises the following steps: preparing a sample: taking a GS-441524 test sample, dissolving and diluting with a mixed solution composed of dimethyl sulfoxide and a phosphoric acid solution to prepare a test sample solution; the volume fraction of phosphoric acid in the phosphoric acid solution is 0.05-0.1%, and the volume ratio of dimethyl sulfoxide to the phosphoric acid solution is (30: 70)-(60: 40). According to the application, the ridecevir intermediate GS-441524 is dissolved and diluted through the mixed solution composed of the dimethyl sulfoxide and the phosphoric acid solution, and due to the high solubility of the dimethyl sulfoxide to the ridecevir intermediate GS-441524 and the high boiling point of the dimethyl sulfoxide, the ridecevir intermediate GS-441524 with relatively high concentration can also be subjected to high performance liquid chromatography.

The application provides a formula system and a preparation method for improving the solubility and stability of ceramide NP, and belongs to the cosmetic field.The formula system comprises: an active ingredient, an emulsifier, a thickening agent and a solvent; the active ingredient is ceramide NP; the emulsifier comprises at least one of an anionic emulsifier, a natural polymer emulsifier, a non-ionic emulsifier and a phospholipid emulsifier; and the solvent comprises water, a polyhydric alcohol and an oil-soluble solvent.The formula system has an unexpected technical effect of greatly improving the stability of an oil-in-water cosmetic containing more ceramide NP by selecting suitable emulsifiers, thickening agents and solvents.

The present invention provides a method for predicting and controlling the solubility of carbon dioxide in a soda water filling line based on a physical information neural network, which belongs to the technical field of neural network solubility prediction. The present invention constructs a physical information neural network model constrained by vortex dynamics, embeds the fluid mechanics equations and the gas solubility law as hard constraints into the loss function, and synchronously optimizes data fitting and physical law matching through gradient back propagation. The sensor data is processed using a multi-scale spatiotemporal attention unit, and the signal features are extracted hierarchically through wavelet transform. The production line topology is abstracted into a graph structure through a migration adaptation module, and the difference is calculated to adaptively migrate the model parameters. The filling pressure is dynamically optimized based on the predicted value, and the solubility deviation is responded to through a real-time adjustment mechanism of the PID parameters. The present invention improves the accuracy and robustness of solubility prediction, enhances the model's ability to suppress noise and adapt to topology changes, and improves the stability and response speed of the control system.

The invention discloses a composition and a method for prolonging the shelf life of a liquid MDI product. The composition comprises (a) diphenylmethane diisocyanate (MDI), (b) at least one organophosphoric acid derivative with a structure shown in a formula (I), and (c) at least one metal carbonyl compound with a structure shown in a formula (II). The method provided by the invention can inhibit the formation of the MDI dimer, and especially prominently, can improve the solubility of the MDI dimer in a liquid MDI product, reduce the freezing point of the liquid MDI product, prolong the storage life of the liquid MDI product, and improve the storage and transportation stability and operation convenience of the liquid MDI product.

The utility model provides a liquid extraction container. The liquid extraction container comprises a container body, an extraction part and a power supply part, the container body comprises a kettle cover and a kettle cover capable of covering the kettle body, and the kettle body and the kettle cover define a containing space. The extraction part is arranged in the container body, and at least part of the extraction part is located in the containing space. The power supply part is arranged on the container body, is electrically connected with the extraction part and supplies power to the extraction part, so that the extraction part generates mechanical vibration. The mechanical vibration generated by the extraction part of the liquid extraction container can improve the solubility of the solute dissolved into the solvent from the solid raw material, so that the extraction part can extract the liquid in the accommodating space, the extraction efficiency of the liquid extraction container is high, and the liquid extraction container is convenient for a user to use.

The present invention is a resist composition which generates acid when exposed to light and in which there is a change in solubility in a developer due to the effects of the acid. The resist composition contains a resin component in which there is a change in solubility in a developer due to the effects of an acid. The resin component contains a polymer having a group (I) represented by general formula (I-1) at at least one terminal of the main chain. In formula (I-1), L0 represents a divalent linking group, and Z0 represents a lactone-containing cyclic group. This resist composition enables formation of a resist pattern that has reduced roughness and improved etching resistance.

The invention relates to a device and method for evaluating the oil saturation of rock based on a step-by-step centrifugal volumetric method, and the device comprises a centrifugal unit which comprises a rotating support and a centrifugal tray sleeving the rotating support; the measuring unit comprises a plurality of closed detachable centrifugal tubes, the plurality of centrifugal tubes are uniformly arranged in the circumferential direction of the centrifugal tray, a pressurizing chamber, a sample chamber and a collecting chamber are sequentially arranged in each centrifugal tube from top to bottom, and the pressurizing chamber and the sample chamber are separated through a sealing partition plate and are controlled to be opened and closed through a valve; and the sample chamber and the collection chamber are separated by a filter screen. Compared with an organic solvent, the supercritical CO2 adopted by the method has obvious advantages in the quantification of the crude oil of the source rock. The oil content measuring agent has both gas diffusivity and liquid solubility, is small in molecular size, can penetrate through tiny pores of source rocks, is higher in dissolving capacity for heavy components in crude oil, and can fully extract the crude oil in various pores and reduce residues, so that the oil content of the rocks is more accurately quantified.

The present invention employs a resist composition generating an acid upon light exposure, with the solubility of the resist composition in a developing solution being changed by an action of an acid, the resist composition comprising: a base material component (A), wherein the solubility of the base material component (A) in a developing solution is changed by an action of an acid; and a compound (B0) represented by general formula (b0). In general formula (b0), R01 and R02 are each independently a hydrocarbon group which may have a substituent. R01 and R02 may bind to each other to form a ring structure. Mm+ is an m-valent cation. The valence m is an integer of 1 or more.

The invention discloses a method for determining the solution concentration in the crystallization process of 3, 4-dinitrofurazan furoxan oxide, and relates to the technical field of energetic crystal materials. According to the method, an EasySampler and HPLC (High Performance Liquid Chromatography) combined method is utilized, the solubility of DNTF is measured, a standard curve of DNTF solution concentration and peak area is established by utilizing a high performance liquid chromatograph, then the EasySampler is utilized to sample a crystallization process and perform HPLC analysis, and then the solution concentration at each moment is calculated by utilizing an equation of the standard curve. According to the method, EasySampler equal interval sampling is combined with off-line HPLC (High Performance Liquid Chromatography) analysis, and a curve that the concentration of the main component of the solution changes along with the temperature is constructed. In the dominant period of crystal growth, the concentration change rate and the solid-liquid interface area are in an approximately linear relationship. The experimental data provides a necessary demonstration basis for subsequent improvement of a non-ideal system crystallization kinetics theory.

The present disclosure relates to crystalline forms of 2-{3-[1-(2-nitrophenyl)-1H-pyrrol-2-yl]prop-2-ene-1-pyridine}hydrazine-1-carboximidamide that have high solubility under acidic conditions. The present disclosure also relates to the use of said crystalline forms in medicine.

The present invention provides a polymer that has high dispersibility of fluororesin particles and excellent solubility in fluorine-based solvents, and further has a perfluoroalkyl group having less than 6 carbon atoms, which imposes little burden on the environment and living organisms. The polymer contains at least two structural units of first to third monomer units, or is composed solely of the second monomer unit. The first to third monomer units are represented by formulas (1) to (3), respectively. CH2=CR 1 -COO-Q 1 -Rf 1 (1) R 1 :H or methyl, Rf 1 : C1-4 polyfluoroalkyl group, Q 1 :Single bond, etc. CH2=CR 2 -COO-R 3 -Q 2 -Rf 2 (2) R 2 :H or methyl, R 3 : C1-6 alkylene group, Rf 2 : C5-20 perfluoropolyether group, Q 2 : Single bond or -NH-COO-Q 21 - and Q 21 is a single bond, etc. CH2=CR 4 -COO-Q 3 -R 5 (3) R 4 :H or methyl, R 5 : C12 to C40 alkyl group, Q 3 :Single bond, etc.

The invention discloses a crystal form and a preparation method of Alalistrum hydrochloride, the crystal form comprises a crystal form Form3, a crystal form 4 and a crystal form Form11, Alalistrum hydrochloride solids Form3 (methanol-water composite solvate), Form4 (hydrate) and Form11 can be obtained by mixing and dissolving Alalistrum hydrochloride solids and an organic solvent, and then adopting the modes of crystallization, crystal mush and volatilizing, and the Alalistrum hydrochloride solids Form3 (methanol-water composite solvate), Form4 (hydrate) and Form11 can be obtained by using the crystal form of Alalistrum hydrochloride and the preparation method of the crystal form of Alalistrum hydrochloride and the preparation method of the crystal form of Alalistrum hydrochloride. The preparation method disclosed by the invention is simple in process, strong in operability, high in yield, high in purity and good in crystallinity, and the crystal form disclosed by the invention is high in solubility, few in residual solvent and good in solid property and meets the medicinal development standard.

To provide a voice coil motor (VCM) equipped with a damper material, and to provide the VCM equipped with the damper material cleaned by cleaning the VCM after the damper material is mounted on the VCM.SOLUTION: A VCM provided with a damper material is cleaned by using a detergent composition comprising a nonaqueous organic solvent containing a compound having a solubility parameter of <6 which does not attack the damper material by erosion, dissolution, etc., and does not damage the damper material.SELECTED DRAWING: None

The invention discloses a treatment technology for separating a sorbic acid isomerization product, and belongs to the field of chemical engineering. According to the method, water and ethanol in the eliminated mother liquor are separated through selective separation of the dehydration membrane, so that an ethanol solution with higher concentration is obtained, the concentrations of sorbic acid and isomers in the solution are increased, then the crystallization temperature is controlled by utilizing the solubility difference of the sorbic acid and the isomers in the alcohol, and the crystallization efficiency is improved. Sorbic acid containing a low isomerization product is separated and recovered, so that the quality of a finished product is effectively improved.

The present application belongs to the technical field of pharmaceutical chemistry, and particularly relates to an indobufen crystal form, a preparation method and application thereof. The preparation method is simple, only needs to add indobufen into a mixed solvent, heat and stir to dissolve, and then concentrate and dry under reduced pressure to obtain the crystal form. The anhydrous crystal form of indobufen provided by the present application has good chemical stability in solid state or solution state, and has good solubility.

A foaming antiperspirant or deodorant composition comprising: a. an oil in water emulsion comprising: i. a first oil phase comprising one or more emollients; ii. a second oil phase comprising one or more emollients; wherein the second oil phase emollients have at most 5% solubility in the first oil phase emollients; iii. an antiperspirant or deodorant active; iv. one or more nonionic emulsifier; and v. a fragrance; and b. at most about 15%, by weight of the composition, of a blowing agent.