4728 results about "Aqueous solubility" patented technology

The invention discloses an oxygen-containing heterocyclic compound salt, and a crystal form and application thereof. The oxygen-containing heterocyclic compound salt disclosed by the invention has a structure as shown in a formula II. The oxygen-containing heterocyclic compound salt and the crystal form thereof provided by the invention have one or more improved characteristics, which are represented by extremely high water solubility, and high dissolution rate and high solubility in physiological related medium simulated gastrointestinal fluid, so that the stability of the oxygen-containing heterocyclic compound under an oxidation condition is remarkably improved, and the stability of the oxygen-containing heterocyclic compound is improved. Low hygroscopicity and good crystal form stability are achieved, and oral absorption and long-term storage of the medicine are facilitated; and the preparation method is simple and suitable for industrial production. # imgabs0 #

The invention relates to a flexible aqueous binder for a lithium battery negative electrode and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing a flexible polyurethane prepolymer containing vinyl by taking hydroxyl-terminated polybutadiene, isocyanate and hydroxyl acrylate as main raw materials; vinyl-containing compounds such as water-soluble acrylic acid (salt) or acrylamide, oil-soluble acrylic ester or acrylonitrile and the like are used as monomers and are combined with a flexible polyurethane prepolymer to prepare the negative water-based binder with flexible cross-linking points through free radical polymerization. The aqueous binder prepared by the technical method provided by the invention can realize point-to-point and point-to-line bonding modes with a pole piece active substance on a microstructure, so that the bonding strength of the active layer material and a copper foil is improved on the premise of not influencing the electrolyte resistance of the binder; and the flexibility of the negative pole piece and the subsequent processing stability are obviously improved.

The present application relates to the technical field of lithium battery materials and binders, and discloses an aqueous polymeric binder, a preparation method therefor and a use thereof. The aqueous polymeric binder is obtained by copolymerizing a polymerization unit comprising an acrylic monomer, an acrylate monomer, an oil-soluble monomer, a water-soluble monomer, and an amphiphilic water-soluble monomer in an aqueous solvent; and the mass percentages of the monomers are as follows: acrylic monomer: 5%-15%; acrylate monomer: 45%-60%; oil-soluble monomer: 10%-40%; water-soluble monomer: 5%-20%; and amphiphilic water-soluble monomer: 5%-10%. The aqueous polymeric binder of the present application is mainly used for bonding of an edge coating of a negative electrode sheet of a lithium-ion battery; on the basis of the specific copolymerization monomer components and proportions, the obtained binder has excellent PP base film bonding performance and electrolyte swelling resistance; in addition, the binder avoids material mixing with a negative electrode, and has good prospects of application.

The invention relates to a particulate composition comprising, or substantially consisting of, urea, an inhibitor, preferably a urease inhibitor and / or a nitrification inhibitor, and an additive, wherein the additive comprises components (i) and (ii): (i) a carboxylic acid or an anhydride, salt, or derivative thereof; preferably a carboxylic acid salt or a carboxylic acid derivative, more preferably a carboxylic acid salt; and (ii) a polar polymer; preferably a water-soluble polar polymer. The invention further relates to a process for preparing the particulate composition, an additive for a particulate composition, and the use of the particulate composition as a fertilizer.

The invention provides a nitrogen-doped biomass-based fluorescent carbon quantum dot, a preparation method and application, and relates to the technical field of carbon nanomaterials, the method comprises the following steps: mixing a biomass material and deionized water under an ultrasonic condition, adding a nitrogen source, and carrying out ultrasonic dispersion to obtain a uniformly dispersed to-be-reacted solution; reacting the to-be-reacted solution at a preset temperature for a preset time to obtain a mixed product solution; and filtering and dialyzing the mixed product solution to obtain the nitrogen-doped biomass-based fluorescent carbon quantum dot solution. The nitrogen-doped biomass-based fluorescent carbon quantum dot prepared by the method shows a stable fluorescent effect and good water solubility, the free radical clearance rate can reach 90% or above, and the antibacterial rate can reach 99% or above. The method can be used in the fields of drug sustained release, bioimaging and the like.

An oral pouch product includes a wrapper and a filling material. The wrapper defines a cavity. The filling material is in the cavity. The filling material includes a dry mixture and a liquid mixture. The dry mixture includes a cellulosic material and a water-soluble filler. The liquid mixture includes an oil and liquid nicotine. The oil includes a triglyceride, a diglyceride, a monoglyceride, or any combination thereof. The liquid nicotine is dissolved in the oil. The filling material is free of water or includes water in an amount less than or equal to 5 weight percent.

The invention relates to the technical field of purification of organic chemicals, in particular to an aroma purification method of leaf alcohol. Comprising the following steps: preparing a methanesulfonic acid magnetic catalyst; esterification of leaf alcohol; and alcoholysis and fractionation of the esterification solution. According to the method, acetic acid is used for esterification of leaf alcohol, then clear water and a sodium carbonate solution are used for washing, the clear water can effectively remove some water-soluble impurities and acidic byproducts, and the sodium carbonate solution not only can neutralize residual acidic substances, but also can promote siloxane impurities in initial leaf alcohol to be hydrolyzed and then taken away by a water phase, so that the content of the siloxane impurities in the leaf alcohol is reduced; in the subsequent process of producing leaf alcohol through alcoholysis of the organic phase I, pure water and ethanol, silyl ether impurities are hydrolyzed in a high-temperature and strong-alkali environment, products are dissolved in waste liquid to be removed, olefine aldehyde impurities with the boiling point lower than that of leaf alcohol are removed through azeotropic fractionation with ethanol, in conclusion, the impurities in the finished product leaf alcohol can be effectively reduced, and the yield of the finished product leaf alcohol is increased. And the prepared finished product leaf alcohol is high in purity and pure in fragrance.

The invention relates to an anti-oxidation composition based on a reverse micelle synergistic technology and a preparation method and application thereof, the anti-oxidation composition comprises a reverse micelle structure and an aqueous solution containing an anti-oxidation active matter, and the reverse micelle structure wraps the aqueous solution containing the anti-oxidation active matter. The reverse micelle structure is used for wrapping the water-soluble antioxidant active matter, oxidation or degradation discoloration of the water-soluble antioxidant active matter is prevented, after the antioxidant active matter such as hydroxytyrosol, ergothioneine and dipotassium glycyrrhizinate is wrapped by the reverse micelle, the stability and the effect are remarkably improved, and after the reverse micelle wrapping, the effect of the antioxidant active matter is improved by 17% or above compared with an aqueous solution before wrapping.

Provided are a water-soluble film capable of maintaining good mechanical strength even when packaging a liquid detergent and the like while maintaining excellent water solubility of the water-soluble film and a package using the same. A water-soluble film of the present invention includes a polyvinyl alcohol resin. When a crystallinity index calculated for a first surface is Fd1 and a crystallinity index calculated for a second surface opposed to the first surface is Fd2 for FT-IR measurement of respective two surfaces of the water-soluble film by ATR technique using a diamond prism, the Fd1 and the Fd2 are 0.22≤Fd1≤0.72, 0.2≤Fd2≤0.65 and Fd1 / Fd2≥1.1.

The invention discloses a rapid hemostasis powder material for massive hemorrhage. The rapid hemostasis powder material for massive hemorrhage is tannic acid modified carboxymethyl chitosan. The invention also provides a preparation method and application of the rapid hemostasis powder material for massive hemorrhage, and a rapid hemostasis microgel composition containing the rapid hemostasis powder material for massive hemorrhage. The rapid hemostasis powder material and microgel composition for massive hemorrhage have excellent water solubility, hemostasis performance and biocompatibility, have multiple effects of sterilization, anti-inflammation, wound healing promotion and the like, and are beneficial to rapid healing of wound parts after hemostasis.

The invention belongs to the technical field of acyclic compounds, and particularly relates to a preparation method of tert-butyl peroxyisobutyrate. Stirring and cooling a solvent, a tert-butyl hydroperoxide aqueous solution and deionized water to obtain a mixed solution A; adding liquid caustic soda and a solid base catalyst into the mixed solution A under a stirring condition, and continuously stirring for reaction to obtain a mixed solution B; under the stirring condition, isobutyryl chloride and a water-soluble distributing agent are added into the mixed solution B, stirring reaction continues to be conducted, and a mixed solution C is obtained; standing and layering the mixed solution C, separating to obtain a tert-butyl peroxyisobutyrate crude product, and refining the tert-butyl peroxyisobutyrate crude product to obtain the tert-butyl peroxyisobutyrate. According to the method, the raw material utilization rate is increased, the reaction speed is increased, the reaction time is shortened, and the product yield is high.

The invention provides a photosensitive resin composition containing an anthracene methyl quaternary ammonium salt photosensitizer and application of the photosensitive resin composition, a structural main body anthracene ring of the photosensitizer is introduced into methylene substituted by a quaternary ammonium group at a position 10 and / or a position 9, and an acid radical or halogen is adopted as an equilibrium anion; compared with a commercially available anthracene photosensitizer, the photosensitizer has excellent fat solubility and good water solubility through introduction of the quaternary ammonium salt on the premise that the photobleaching property is retained, great potential is brought to formula design of the photosensitive composition, and development waste in a later development process can be greatly reduced; the method can be widely applied to the photo-curing fields of dry films, paints, coatings, printing ink, forming materials and the like.

The invention relates to the technical field of high-barrier environment-friendly packaging films, and discloses a high-barrier environment-friendly packaging film with an antibacterial function, the high-barrier environment-friendly packaging film comprises a base layer, a nano composite barrier layer, a bio-based functional layer and an outer protective layer from bottom to top in sequence, and the layers are tightly attached through a coated starch-based adhesive. According to the high-barrier environment-friendly packaging film with the antibacterial function, good biodegradability of polyhydroxyalkanoate adopted in the base layer film, polycaprolactone which is adopted in the nano-composite barrier layer film and has a biodegradable function and konjac glucomannan in the biological functional layer film are utilized; the composite packaging film can be decomposed into carbon dioxide and water by microorganisms in various environments, has excellent flexibility and processability, can adapt to different packaging requirements, provides basic flexibility, structural support and green and environment-friendly effects for the whole packaging film, and has a wide application prospect. The procyanidine arranged in the outer protective layer film provides stronger antibacterial property and water solubility for the whole packaging film.

The invention provides composite anionic cellulose ether as well as a preparation method and application thereof. The composite anionic cellulose ether is prepared by etherifying alkalized cellulose through an etherifying agent A and an etherifying agent B in sequence, the etherifying agent A is selected from water-soluble halogenated alkyl sulfonic acid and / or water-soluble halogenated alkyl sulfonate; the etherifying agent B is selected from water-soluble halogenated alkyl carboxylic acid and / or water-soluble halogenated alkyl carboxylate. According to the composite anionic cellulose ether, a sulfonic acid group and a carboxylic acid group are sequentially introduced, so that the composite anionic cellulose ether has relatively high temperature resistance and salt and calcium resistance; the compound can be used as a filtrate reducer for the drilling fluid, can effectively control the filter loss of the drilling fluid, and can improve the salt pollution resistance of the drilling fluid, especially the calcium and magnesium ion pollution resistance.

The invention discloses a bionic lignin-based saline-alkali soil improvement material and a preparation method thereof, and belongs to the technical field of high polymer materials and soil improvement. According to the saline-alkali soil improving material, lignin or a derivative thereof serves as a framework, glutenin charge distribution and a dynamic disulfide bond sodium ion response function are simulated, and the sequence and the proportion of chain segments of sulfonic acid groups and quaternary ammonium salt groups are accurately regulated and controlled through step-by-step activation and alternate copolymerization in an aqueous solution polymerization reaction system; positive and negative charges form more uniform sequence distribution, so that the amphipathy of the lignin compound is realized; then, sulfydryl is introduced through click chemistry, linear regulation and control of material viscosity and water solubility are achieved through the chain transfer characteristic of multi-sulfydryl functional groups, and the requirements of different saline-alkali soil application scenes are met. The limitation that a traditional lignin product is single in function is broken through, efficient utilization of lignin is achieved, and the intelligent saline-alkali soil improvement material integrating high stability and pH and Na < + > multi-environment response is developed.

The invention provides a dihydroquercetin caffeine eutectic crystal and a preparation method and application thereof, and belongs to the technical field of eutectic crystal manufacturing. The structural formula of the dihydroquercetin caffeine eutectic crystal is as shown in formula I. The dihydroquercetin caffeine eutectic crystal has excellent water solubility, so that the dihydroquercetin caffeine eutectic crystal has ideal compatibility and bioavailability.

Methods, systems, and apparatuses for forming dissolvable cleaning products. The dissolvable cleaning products may be formed by forming a first component solution by mixing ingredients in a first mixer. The mixing may be suspended and the first component solution may be allowed to rest for a first holding period. A second component solution may be formed by mixing ingredients in a second mixer. The mixing may be suspended and the second component solution may be allowed to rest for a second holding period. The first and second component solutions may be mixed together and one or more of enzymes and preservatives and a water-soluble polymer may be added to form a final solution. Optionally one or more fragrances may be added. The final solution may be transferred to a mold and dried to a predetermined moisture content. The dried final solution may be cut into one or more shapes.

The invention discloses a quaternary ammonium salt modified linalool derivative as well as preparation and application thereof. The structure of the quaternary ammonium salt modified linalool derivative is shown as a formula (I). The quaternary ammonium salt modified linalool derivative is prepared by carrying out nucleophilic substitution reaction on linalool and benzyltrimethylammonium chloride. The derivative can be applied to water-based disinfectants or antibacterial daily necessities. The derivative has good water solubility and bactericidal activity. Through the synergistic interaction of the quaternary ammonium salt group and the linalool mother nucleus, the disinfection and sterilization capacity of the linalool derivative is remarkably improved compared with that of independent quaternary ammonium salt or linalool, and the linalool derivative particularly has a better disinfection and killing effect on pathogens of a quaternary ammonium salt-resistant disinfectant. # imgabs0 #

The invention provides a preparation method and application of a camellia polypeptide composition with anti-wrinkle, repairing and brightening effects. The camellia polypeptide composition comprises a component A and a component B, wherein the component A comprises a wrapping solubilizer and polyhydric alcohol; component B: a plurality of polypeptides; the component C comprises carnosine, camellia polypeptide and water. The camellia polypeptide disclosed by the invention is prepared by the following steps: performing supercritical deoiling on camellia seeds, performing alkali extraction, acid precipitation and enzymolysis to prepare polypeptide, performing membrane filtration, taking micromolecule polypeptide as a main component, promoting synthesis of type I, type III and type V collagen, promoting cell migration and scavenging free radicals, and has the effects of resisting wrinkles, repairing and resisting oxidation; according to the invention, the problem of water solubility of palmitoyl peptide and acetyl peptide is solved, so that palmitoyl peptide and acetyl peptide can form a stable composition together with water-soluble polypeptide. The anti-wrinkle, repairing and whitening effects are achieved in multiple ways and multiple directions, the effects of improving wrinkles, repairing the skin, brightening the skin color and delaying senescence can be better achieved, and the anti-wrinkle, repairing and whitening composition can be widely applied to various types of cosmetics.

The present disclosure provides a unit dose detergent comprising a water-soluble film material comprising a first compartment that is adjacent to a second compartment and separated by at least one layer of the film. The first compartment encloses a liquid composition comprising a non-aqueous solvent, and the second compartment encloses a powder composition comprising a pigment and at least one additive selected from a salt, a flow aid, acid, enzyme, chelating agent, a polymer, and any combination thereof; such that at least one of the liquid composition and the powder composition comprises a surfactant. Also provided is a method of preparing the powder composition for use in the unit dose detergent. The method includes adding the pigment to a salt to provide a pigment-salt combination and adding a flow aid to the pigment-salt combination to form the powder composition.

The invention discloses a baicalin and boric acid antibacterial peptide assembly and a preparation method and application thereof, belongs to the technical field of biological medicine, and provides a baicalin and boric acid antibacterial peptide assembly which comprises baicalin and boric acid antibacterial peptide. The amino acid sequence of the boric acid antibacterial peptide is one of SEQ ID NO. 1, SEQ ID NO. 2, SEQ ID NO. 3, SEQ ID NO. 4, SEQ ID NO. 5 or SEQ ID NO. 6. According to the baicalin and boric acid antibacterial peptide assembly, phenylboronic acid molecules introduced to the C end of boric acid antibacterial peptide polypeptide can form boric acid ester bonds with the baicalin, the water solubility and membrane permeability of the baicalin can be improved, the baicalin can enter bacterial cells more easily to play a role, and the baicalin and the boric acid antibacterial peptide can form a multi-target synergistic antibacterial effect; therefore, the antibacterial effect is obviously improved.

The invention relates to the field of polyimide materials, in particular to a positive photosensitive polyimide photoresist, a polyimide film and application of the positive photosensitive polyimide photoresist and the polyimide film. The positive photosensitive polyimide photoresist with excellent performance can be prepared by taking novel water-soluble polyamic acid ester with good dielectric property, low water absorption, heat resistance and the like as film-forming resin and combining the film-forming resin with the quinonediazide compound photosensitive component, the silane coupling agent and the organic solvent; the main film-forming component polyamic acid ester is a corresponding water-soluble polyimide precursor synthesized by using a series of simple and easily available polymeric monomers, and the realization of the water solubility is not limited to specific groups such as hydroxyl, carboxyl and the like in molecules. The photoresist has the advantages of high light sensitivity, high resolution, good thermal stability and chemical resistance, good heat and humidity resistance, good adhesion to various substrates and the like, an alkaline aqueous solution can be used as a developing solution, the loss of a film in a non-exposure area in the developing process is low due to low water absorption of the alkaline aqueous solution, and the developing time is short.

The invention relates to a method for degrading nitrobenzene pollutants by using a humus-synergistic enhanced Fenton system, which comprises the following steps: adding a peroxide oxidant, a Fe (III) catalyst and a water-soluble organic reducing agent with Fe (III) reducing capacity into soil containing nitrobenzene pollutants, uniformly mixing to form a Fenton system, adding humus, and uniformly mixing to form the nitrobenzene pollutants. Mixing and reacting to obtain the soil for degrading the nitrobenzene pollutants. Compared with the existing Fenton technology, the method has the advantages that the overall catalytic efficiency can be improved, the initial pH does not need to be adjusted, and the method is green, safe and environmentally friendly.

The invention belongs to the field of nano material preparation, and particularly relates to a preparation method of water-soluble heme, which adopts an anti-solvent precipitation method, accurately controls an anti-solvent precipitation process through an ultrasonic microreactor or a micromixer, and realizes continuous preparation of water-soluble heme with small size, high solid content and excellent stability. The particle size of the water-soluble heme obtained through the preparation method is 200 nm or below, the solid content in water can reach 200-500 mg / mL, and the water-soluble heme can be used as a health care product or a food additive.

The invention provides a preparation method and application of medical grade agarose with different molecular weights, and belongs to the technical field of biomedical materials. According to the invention, the crude agarose product is treated by DMSO, EDTA-Na2 and DEAE-cellulose, and then the acid concentration, the acid treatment temperature, the acid treatment time and the like in the acid treatment stage are finely regulated, so that the medical-grade agarose with medium-high molecular weight (3000-100000), medium molecular weight (3000-3000) and low molecular weight (1t, 3000) is successfully prepared. The medium-high molecular weight and medium molecular weight medical grade agarose provided by the invention has excellent gel performance, adjustable mechanical strength and injection performance, and is suitable for the fields of skin implants, gel dressings, tissue engineering and the like; the low-molecular-weight medical grade agarose shows good water solubility, fluidity and oxidation resistance, and has significant application potential in the fields of medical skin care products and functional dressings.

The invention discloses an impregnation liquid for preparing hydrogenated bisphenol A through bisphenol A hydrogenation. The impregnation liquid comprises a Ru complex, a water-soluble nonionic surfactant and water, wherein the molecular size of the Ru complex is greater than 1nm. According to the preparation method disclosed by the invention, by adopting the impregnation liquid containing the Ru complex of which the molecular size is greater than 1nm and the water-soluble nonionic surfactant, more Ru complex of which the molecular size is greater than 1nm can exist in mesoporous channels of an activated carbon carrier in an impregnation process, so that the contact probability of an active phase and a reactant bisphenol A molecule is increased; the purposes of improving the active metal utilization rate and improving the catalyst activity are achieved.

The invention relates to the technical field of temporary plugging agents, and discloses a water-soluble temporary plugging agent for oil well fracturing and a preparation method thereof. According to the prepared water-soluble temporary plugging agent, sodium lignin sulfonate / graphene oxide serves as a core, then the surface of the core layer is coated with a polyacrylic acid-polyacrylamide copolymer to form a first shell layer, and then the surface of the first shell layer is coated with acrylate modified chitosan to form a second shell layer; the temporary plugging agent is applied to oil well fracturing, not only has excellent plugging performance, dissolving performance and anti-shearing performance, but also can improve the transportation capacity of the temporary plugging agent in the oil well fracturing process.

The invention discloses an antifouling waterborne polyurethane coating for ships, and relates to the technical field of waterborne polyurethane coatings, and the antifouling waterborne polyurethane coating is prepared from the following raw materials in parts by weight: 5 to 8 parts of polytetrahydrofuran, 3 to 5 parts of diphenylmethane diisocyanate, 4 to 5.2 parts of chain extender and 0.45 to 0.7 part of functional filler. According to the antifouling waterborne polyurethane coating for the ship, the chain extender I tends to be distributed on a coating-water interface through the hydrophilicity of triethanolamine in the chain extender I, meanwhile, boric acid groups are preferentially in contact with seawater and are distributed on the surface layer of a coating, the water solubility is high, boric acid ions are rapidly released at the initial stage, and the antifouling waterborne polyurethane coating is good in antifouling property. The initial adhesion of marine microorganisms is inhibited through ion repulsion; an MDI fragment in the chain extender II provides an extra-NCO reaction site, and chemical crosslinking is generated between the MDI fragment and a network formed by the chain extender I, so that the overall crosslinking density is improved, and the toughness and weather resistance of a coating film are improved.

The invention relates to the technical field of medicine analysis and traditional Chinese medicine detection, in particular to a construction method, a detection method and application of a specific chromatogram of a szechuan lovage rhizome perfume extract. Wherein the conditions of the liquid chromatographic analysis are as follows: gradient elution is carried out by adopting an aqueous solution of a mobile phase A acetonitrile and a mobile phase B phosphoric acid for 0-5 minutes, the volume percent of the mobile phase A is maintained to be 4% and 5-12 minutes, the volume percent of the mobile phase A is increased to 16% from 4% and 12-19 minutes, the volume percent of the mobile phase A is maintained to be 16% and 19-29 minutes, the volume percent of the mobile phase A is increased to 40% from 16% and 29-31 minutes, and the volume percent of the mobile phase A is maintained to be 4% and 12-19 minutes. The volume percentage of the mobile phase A is increased to 55% from 40%, 31-37 min, and the volume percentage of the mobile phase A is maintained to be 55%. The method can be used for quantitatively determining the water-soluble components of the szechuan lovage rhizome perfume extract, and can also be used for identifying the true and false.

The invention discloses application of a hydroxylamine compound cleaning solution. In particular to application of a hydroxylamine compound cleaning solution in cleaning plasma etched and ashed wafers. The hydroxylamine compound cleaning solution is prepared from the following components in percentage by mass: 1 to 30 percent of a hydroxylamine compound, 1 to 5 percent of a corrosion inhibitor, 0.1 to 5 percent of a chelating agent, 0.01 to 5 percent of a nonionic surfactant and 1 to 50 percent of a water-soluble organic solvent and water. The sum of the mass fractions of the components is 100%. The hydroxylamine compound cleaning fluid is safe and environment-friendly, solves the problem of high cost caused by fixed raw material sources, reduces the cost, and is safe and reliable.