345 results about "Sulfonic acid" patented technology

This application discloses a crown ether modified perfluorosulfonic acid resin, its preparation method, its application, and an ion exchange membrane. The main chain of the crown ether modified perfluorosulfonic acid resin is a perfluorocarbon chain. The crown ether modified perfluorosulfonic acid resin includes repeating unit A, which is shown in formula (1): Formula (1); In formula (1), R0 is a crown ether group, a is a positive integer from 0 to 6, and b is a positive integer from 2 to 5. This application can effectively improve the persistence of the ion exchange membrane's free radical quenching effect, while also improving the oxygen resistance of the ion exchange membrane.

The application provides a flexible plugging agent for offshore oil and gas drilling fluid and a preparation method and application thereof, and belongs to the technical field of offshore oil and gas drilling and production. The plugging agent is prepared from the following raw materials: styrene, N-phenylmaleimide, 2-acrylamido-2-methylpropanesulfonic acid, sodium p-styrenesulfonate, 2-methacryloyloxyethylphosphorylcholine, a crosslinking agent, an initiator, a hydrophilic emulsifier, an oleophilic emulsifier and water. The plugging agent has excellent structural stability, heat resistance, salt resistance and hydration stability, has good adaptability to a low-density drilling fluid system, has a flexible deformation capacity, can effectively enter a complex leakage passage to achieve effective plugging, and can maintain the integrity and stability of a plugging layer under drilling fluid circulation shearing, temperature fluctuation and complex downhole conditions, thereby having applicability in a high-temperature and high-pressure drilling environment.

This invention discloses a method for preparing sodium houttuynia cordata, comprising the following steps: adding sodium methoxide and toluene to a reaction vessel, heating, then slowly adding nonanone and ethyl formate, and after the addition is complete, reacting with a gradient cooling process, and post-processing to obtain an aqueous phase containing intermediate I; adding the aqueous phase containing intermediate I and toluene to the reaction vessel, stirring, cooling, and rapidly introducing liquid sulfur dioxide, continuously stirring and reacting at 0-10°C for 5-15 minutes, cooling, and filtering to obtain crude sodium houttuynia cordata. The preparation method of this invention directly introduces liquid sulfur dioxide during the sulfonation reaction, greatly shortening the process time, while achieving high product yield and purity, and requiring less sulfur dioxide. Furthermore, in the post-processing of sodium houttuynia cordata, adding toluene to the reaction solution beforehand can effectively transfer the generated impurities to the toluene; recrystallization using a 50 v / v% ethanol aqueous solution removes water-soluble and oil-soluble impurities while further reducing the risk of fire and explosion during centrifuge operation.

The present invention relates to a highly dispersible organic-inorganic hybrid nanoparticle radical scavenger having excellent low elution characteristics and reversible regenerability and to an electrode composition comprising same, the highly dispersible organic-inorganic hybrid nanoparticle radical scavenger comprising nanoparticles in which an oxide of cerium (Ce) and silicon (Si) and an oxide of at least one metal (M) selected from transition metals and lanthanides are combined, wherein the nanoparticles have at least one functional group selected from an alkylsulfonic acid group and a fluoroalkylsulfonic acid group.

A secondary battery and an electronic apparatus. Specifically, the secondary battery comprises: a positive electrode, a negative electrode, and an electrolyte; the positive electrode comprises a positive electrode current collector and a positive electrode material provided on the positive electrode current collector; the positive electrode material comprises lithium cobalt oxide; the electrolyte comprises methylene methane disulfonate and propenyl-1,3-sultone; relative to 100 parts by mass of the electrolyte, the sum of methylene methane disulfonate and propenyl-1,3-sultone is 0.02 parts by mass to 3.5 parts by mass. The overcurrent and over-temperature safety of the secondary battery are improved.

This invention relates to the field of mineral processing technology, specifically to an environmentally friendly copper-molybdenum separation inhibitor, its preparation method, and its application. The method includes: mixing starch and formamide, stirring at room temperature, cooling in an ice-water bath at -5°C, slowly adding chlorosulfonic acid at this temperature to initiate a sulfonation reaction, neutralizing to pH 7-8 with sodium hydroxide solution after the reaction, adding anhydrous methanol to precipitate the product, and washing and drying to obtain the sulfonated anionic starch polymer DGSS. The inhibitor is applied to the flotation separation of copper-molybdenum mixed concentrates, combined with a closed-circuit process of one roughing, one scavenging, and four cleaning stages, employing a gradient reagent reduction and staged kerosene replenishment system from roughing to cleaning. This allows for selective inhibition of copper sulfide minerals such as chalcopyrite at extremely low dosages, with minimal impact on the floatability of molybdenite. It completely avoids the use of toxic substances such as cyanide, Knox reagent, or sodium sulfide, exhibiting good selectivity, low reagent consumption, environmental friendliness, and a simple preparation process that is easy to industrialize.

This invention relates to a perovskite solar cell doped with a disulfonic acid-based functionalized ionic liquid and its preparation method. By doping a perovskite precursor solution with a disulfonic acid-based functionalized ionic liquid, this invention effectively controls the crystallization process of perovskite, reduces lead iodide residue, and prepares a perovskite film with better crystallinity, larger and more uniform grain size, and a smoother surface, thereby improving the stability of the perovskite film. Furthermore, the presence of disulfonic acid groups in the ionic liquid anchors uncoordinated Pb ions, inhibits ion migration, and passivates defect states in the perovskite material, significantly improving the quality of the perovskite film and thus enhancing the photoelectric conversion efficiency and long-term stability of the solar cell. Simultaneously, after perovskite film formation, the ionic liquid is mainly distributed at the upper and lower interfaces, achieving synergistic passivation of the two interfaces of the perovskite film, further improving the photoelectric conversion efficiency and long-term stability of the solar cell.

The present application relates to the technical field of pipeline drainage, and particularly relates to a composite hydrophobic material for inhibiting crystallization of a tunnel drainage pipeline and a preparation method thereof; the composite hydrophobic material comprises a hydrophobic inner layer and a scale inhibition outer layer attached to the outer surface of the hydrophobic inner layer; the hydrophobic inner layer comprises tetrahydrofuran, a solvent volatilizing agent, a surfactant, nano-silicon dioxide, a cross-linking agent and a curing agent; the scale inhibition outer layer comprises a scale inhibitor solution and a gum material, wherein the scale inhibitor solution comprises EDTA, hydrolyzed maleic anhydride and sulfamic acid; the preparation method comprises the following steps: S1, coating the hydrophobic inner layer material; S2, air-drying to obtain the hydrophobic inner layer; S3, coating the scale inhibition outer layer material on the surface of the hydrophobic inner layer to obtain the composite material; the composite material prepared by the present application still has excellent hydrophobic performance after being left for 24 hours and can be maintained for a long time; the scale inhibition outer layer protects the hydrophobic inner layer and simultaneously plays a scale inhibition role, thereby improving the functionality of the material.

The application discloses an anticoagulant biomaterial for blood purification and a preparation method and application thereof, and comprises the following steps: providing an amphiphilic copolymer P(AA-MMA); blending polyethersulfone, P(AA-MMA) and a solvent, stirring at a set temperature to obtain a casting solution, and preparing a blending membrane from the casting solution; soaking the blending membrane in a 2-morpholine-4-yl ethanesulfonic acid buffer solution containing argatroban, 1-ethyl-(3-dimethylaminopropyl) carbonyl diimide and hydroxy succinimide, and reacting at room temperature to obtain an argatroban grafted blending membrane, namely the anticoagulant biomaterial. The method improves the hydrophilicity of the membrane, reduces the albumin adsorption of the membrane, reduces the adhesion of platelets on the membrane, prolongs the coagulation time APTT, PT and TT of the membrane, and is better in biocompatibility and enhanced in anticoagulation performance.

------30 / 05 / 2560------(OCR) Page 1 of 1 Summary of the invention. This invention relates to a liquid detergent component for textile products. Containing the following components (A) in amounts of 10% by mass or more and 60% by mass Or less, the following components (B), and water: Component (A): Internal olefin sulfonate containing 17 or more and 24 or less. More than carbon atoms, where the mass ratio of internal olefin sulfonates is 17 or more. And 24 or fewer carbon atoms with sulfonate groups at position 2 or higher and at position 4. Or lower (IO-1S) per internal olefin sulfonate containing 17 or more and 24 or less. The carbon atom with a sulfonate group at position 5 or higher (IO-2S), (IO-1S) / (IO-2S), is at 0.75. Or more and 5.5 or less; and Component (B): Organic solvent containing hydroxyl groups. ------------

A rust-preventive lubricating oil composition comprising a base oil; a sorbitan fatty acid ester; an overbased magnesium sulfonate; and at least one additive selected from the group consisting of a calcium sulfonate, a calcium sulfonate complex, a zinc sulfonate, a barium sulfonate, a fatty acid zinc, an oleic acid amine salt, an alkenyl succinic acid polyimide, and a benzotriazole derivative.

This invention discloses a method for treating ammonium fluorosulfate byproducts, comprising providing an ammonium fluorosulfate byproduct mainly comprising ammonium fluorosulfate and a small amount of fluorosulfonic acid and bis(fluorosulfonyl)imide; mixing the ammonium fluorosulfate byproducts with water; reacting the mixture of ammonium fluorosulfate byproducts and water at a hydrolysis reaction temperature to hydrolyze the ammonium fluorosulfate, fluorosulfonic acid and bis(fluorosulfonyl)imide to form an aqueous solution of ammonium bisulfate and hydrogen fluoride; and separating the ammonium bisulfate from the aqueous solution of hydrogen fluoride.

The application belongs to the technical field of oil exploitation, and particularly relates to an acid liquid for acid treatment of an oil layer and a preparation method thereof. The preparation method is as follows: the specific steps of the preparation method are as follows: in a reactor, piperazine-1,4-diethyl sulfonate monosodium salt, ethanol and bromoalkane are added, heated to reflux, and during the reaction, sodium hydroxide solution is used to maintain pH 7-8; 1-bromo-6-(trimethylammonium) hexyl bromide is added, heated to reflux, and during the reaction, sodium hydroxide solution is used to maintain pH 8-9; vacuum distillation is performed to obtain a viscous solid, cyclohexane recrystallization is performed to obtain a solid, and the solid is dried at 90 DEG C overnight to obtain corrosion-inhibiting acid; hydrochloric acid, hydrofluoric acid, hydroxyethylidene diphosphonic acid, corrosion-inhibiting acid and water are added to the reactor, stirred uniformly, and the acid liquid is obtained. The acid liquid has the advantages of low corrosion rate and long acidification time.

This invention relates to the field of gas sensor technology, specifically to a flexible room-temperature ammonia sensor and its fabrication method. It solves the problems of ammonia sensors struggling to balance room-temperature operation with good flexibility, polymer-based sensors having limited sensitivity and poor electron transport, and complex fabrication processes. The sensor comprises a flexible, self-supporting composite nanofiber membrane and interdigitated metal electrodes situated thereon. This invention utilizes organic disulfonic acid as a dopant to introduce sulfonate groups in situ in a one-step process, resulting in sulfonate (-SO3) groups on the surface of the SPANI sensor. ‑ The Zr-TiO2 nanofiber network can interact strongly with ammonia molecules, significantly enhancing its sensitivity to ammonia at room temperature. Meanwhile, the Zr-TiO2 nanofiber network, as a flexible framework and electron transport channel, forms a heterojunction with SPANI, effectively improving the poor electron transport capability of pure polymer materials. The sensor prepared by this invention has the advantages of high sensitivity and good flexibility to ammonia at room temperature.

This invention discloses a method for preparing a composite for treating acrylonitrile production wastewater, comprising: dispersing an oxidant in an aqueous solution, then adding graphite material, heating the system and stirring to react, maintaining the temperature after the reaction, adding an aqueous solution of β-glycerophosphate and stirring until homogeneous, then naturally cooling to room temperature, allowing it to stand, removing the graphite material, and performing conventional washing, drying, and pulverizing to obtain modified graphite powder with a particle size of 200-400 mesh; dissolving a polyol in water, then heating to a certain temperature, adding N1,N2-bis(2,3-dihydroxy-4,6-disulfonic acid benzyl)ethylenediamine and stirring, then adding polyacrylamide until completely dissolved, then adding the modified graphite powder obtained above and stirring until homogeneous, maintaining the temperature and reacting under ultraviolet light, and cooling to room temperature after the reaction to obtain the final product. The composite of this invention can effectively treat pollutants in wastewater, and the process is simple and low-cost.

This invention belongs to the field of solid-state electrolyte technology, specifically relating to a high-pressure resistant composite polymer solid-state electrolyte, its preparation method, and its application. The solid-state electrolyte comprises: a high-pressure resistant terpolymer, a PVDF-based polymer, mullite filler, and a lithium salt; the high-pressure resistant terpolymer is prepared from a high-pressure resistant additive, a crosslinking agent, ethylene ethylene carbonate monomer, and an initiator; the high-pressure resistant additive is selected from at least one of propylene-1,3-sulfonyl lactone, cyclobutene sulfone, and 3-methyl-3-cyclobutene sulfone. The preparation method is as follows: the high-pressure resistant additive, crosslinking agent, initiator, lithium salt, and ethylene ethylene carbonate monomer are mixed to obtain a precursor solution; the PVDF-based polymer and mullite filler are stirred and mixed in a solvent, coated into a film, and vacuum dried to obtain a base film; the base film is immersed in the precursor solution, and after immersion, it is cured to obtain the high-pressure resistant composite polymer solid-state electrolyte.

A photoresist composition comprising one or more non-solvent base-insoluble base materials present in a combined amount greater than 50 wt% based on the total solids of the photoresist composition; a non-polymeric ionic photoacid generator compound comprising an anion and an iodonium or sulfonium cation, wherein the anion is represented by formula (1); a photodecomposable quencher, a basic quencher, or a combination thereof; and a solvent, wherein Ar 1 is a monocyclic or polycyclic C 3‑60 aromatic group; L 1 is a single bond or one or more divalent linking groups, wherein L 1 contains no fluorine; Z 1 comprises an anion stabilizing group, wherein Z 1 is configured to form an intramolecular non-covalent bond with a sulfonate anion group to form a ring having 5 to 8 atoms; and the remaining substituents are as defined herein. (1)

This invention belongs to the field of organic agriculture, specifically a biological agent for promoting wheat photosynthesis and its preparation method. Addressing the problems of existing biological agents having relatively simple components, low absorption and utilization efficiency by wheat ears, and a tendency to reduce nitrate reductase activity, nitrogen utilization, and chlorophyll content in wheat leaves, the following solution is proposed: the biological agent comprises the following raw materials in parts by weight: 50-65 parts of yield-enhancing amine, 15-20 parts of choline chloride, 10-15 parts of diethylaminoethanol hexanoate, 5-10 parts of brassinolide, 3-5 parts of p-chlorophenoxyacetic acid, 1-3 parts of calcium diphenylureasulfonate, 2-5 parts of trace agents, and 2-4 parts of ethylene glycol styraldehyde. The biological agent of this invention can promote better photosynthesis in wheat, enhance nitrate reductase activity, and improve nitrogen utilization.

This invention discloses a method for directly preparing bis(fluorosulfonyl)imide from aminosulfonic acid, chlorosulfonic acid, and oxaloyl fluoride in a one-step reaction. This method has the advantages of simple operation, mild reaction conditions, fast reaction speed, and easy product purification.

This invention discloses a polyaniline-modified Pt / C hydrogen evolution electrode with low noble metal loading, its preparation, and its application. The hydrogen evolution electrode comprises: a carbon fiber layer; a carbon powder layer containing polyaniline, perfluorosulfonic acid resin, and carbon powder; a polyaniline nanofiber layer; and a catalyst layer containing polyaniline, a Pt / C catalyst, and perfluorosulfonic acid resin. Each layer promotes electron or proton conduction, ensuring that both can smoothly reach the three-phase reaction region to participate in the hydrogen evolution reaction. Simultaneously, each layer has high porosity, ensuring timely drainage of the hydrogen evolution reaction product liquid water and avoiding flooding. The second, third, and fourth layers all contain polyaniline as a catalyst to promote the hydrogen evolution reaction, with the catalyst content distributed from low to high, ensuring that the hydrogen evolution reaction proceeds in stages and avoiding excessively fast local reaction rates that could cause concentration polarization and lead to a decrease in electrolysis performance. The hydrogen evolution overpotential of the polyaniline-modified Pt / C hydrogen evolution electrode of this invention is superior to that of the traditional Pt / C electrode, thus promoting the hydrogen evolution reaction.

This application relates to the field of rare earth smelting and separation technology, and discloses an ultrasonic-enhanced electrochemical coupling process for the complete separation of rare earth oxides, comprising the following steps: adding a polyphosphate complexing agent and a redox mediator to a cerium-rich rare earth aqueous solution as the anolyte, and pumping it into a dual-chamber membrane electrolytic cell separated by a cation exchange membrane for circulation. An electroacoustic phase-controlled synchronous system is activated to perform periodic reverse-phase pulse operations of turning on the ultrasonic current to decrease and turning off the ultrasonic current to increase. When the trivalent cerium conversion rate reaches a first threshold, the pH is dynamically adjusted and the current is reduced; when it reaches a second threshold, the process is stopped and the temperature is raised to mature the complex salt crystalline phase. The slurry is hot-pressed and filtered; the filter cake is dephosphorized and washed by alkaline solid-phase decomposition, and then calcined at a constant temperature to obtain high-purity cerium dioxide powder. This invention employs a dual-chamber electrolysis technology scheme using polyphosphate complexation combined with a perfluorosulfonic acid cation exchange membrane, achieving the technical effect of zero cathode penetration of rare earth materials.

This invention relates to the field of metal protection and lubrication materials, and discloses a silent, vibration-damping, film-forming, long-lasting rust-preventive oil for bearings and its preparation method. The rust-preventive oil comprises a base oil, a dynamic borate ester-organosilicon-tungsten bridging synergistic modifier, itaconic acid hydrazine, a dimer ester, calcium petroleum sulfonate, polyisobutylene, a phosphate extreme pressure agent, and an antioxidant. The dynamic borate ester-organosilicon-tungsten bridging synergistic modifier forms a reversible dynamic covalent network of borate esters with phenylboronic acid through a diol-based compound, and then undergoes a confined sol-gel polymerization reaction with vinyltriethoxysilane to form silicon-oxygen segments. These segments are then coordinated and bridged by tungstate and diol groups to construct a three-dimensional coupled structure. The rust-preventive oil of this invention has advantages such as high film density, strong adhesion, good vibration damping and noise reduction effect, and strong rust prevention durability, making it suitable for the storage and operational protection of high-end bearings.

Provided is an etchant composition including, about 3.0 wt % to about 15.0 wt % of ammonium persulfate, about 0.1 wt % to about 5.0 wt % of an inorganic acid, about 0.1 wt % to about 2.0 wt % of a fluorine-containing ammonium salt, about 0.01 wt % to about 1.5 wt % of a chlorine-containing ammonium salt, about 0.1 wt % to about 2.0 wt % of a 2-nitrogen cyclic compound, about 0.1 wt % to about 2.0 wt % of a 4-nitrogen cyclic compound, about 0.1 wt % to about 3.0 wt % of an aminosulfonic acid, and a remainder of water such that the total weight of the entire etchant composition becomes 100 wt %, wherein the weight ratio of the 4-nitrogen cyclic compound to the 2-nitrogen cyclic compound is in a range of about 1.6 to about 5.0.

This invention discloses a double-sided chain extender, its preparation method, and its application in the synthesis of ion-conducting polyurethane. The structure of the double-sided chain extender is shown in Formula I. The double-sided chain extender is prepared by a Michael addition reaction of an acceptor compound and 3-amino-1,2-propanediol. The acceptor compound is selected from one of the following: acrylic acid, 2-acryloylamino-2-methyl-1-propanesulfonic acid, acryloyloxyethyltrimethylammonium chloride, 1-vinyl-3-butylimidazolium chloride, 3-((2-(acryloyloxy)ethyl)dimethylammonium)propane-1-sulfonate, 2-(1-(6-(((2-(acryloyloxy)ethyl)carbamoyl)oxo)hexyl)pyridin-1-onthium-4-yl)ethane-1-sulfonate. This invention provides the application of the double-sided chain extender in the synthesis of ion-conducting polyurethane with excellent mechanical properties and ion transport capabilities. I.

The application provides a static spinning solution containing pyridinium propane sulfonate, a preparation method thereof and a static spinning method thereof. The static spinning solution comprises an additive pyridinium propane sulfonate, PAN polyacrylonitrile and DMF. Experiments prove that the static spinning solution has low cost, can improve the entanglement degree between molecular chains, inhibits the breakage of a solution jet in a static spinning process, and the micro-morphology is improved.

This invention provides a wide-temperature-range, long-life flexible zinc-lithium hybrid ion battery hydrogel electrolyte, its preparation method, and its application. The hydrogel electrolyte comprises a polymeric hydrogel framework and an electrolyte phase adsorbed and filled within the framework. The polymeric hydrogel framework is an interpenetrating double network structure formed by sodium alginate and polyacrylamide. The electrolyte phase comprises a mixed solvent, an electrolyte salt, and functional additives. The mixed solvent consists of water and a co-solvent. The electrolyte salt is zinc trifluoromethanesulfonate and lithium trifluoromethanesulfonate. The functional additives are alkali metal salts or rare earth metal salts. This invention, through the synergistic design of a zinc-lithium dual-salt system, an organic co-solvent, and trace amounts of rare earth functional additives, simultaneously achieves low-temperature antifreeze, dendrite suppression, and side reaction suppression in a zinc-lithium hybrid ion battery, thereby significantly improving the battery's wide-temperature-range cycle life and other electrochemical performance.

The present application provides a kind of belt roaster grease composition and its preparation method.The belt roaster grease composition comprises the following components by mass fraction: base oil 42-60 parts, high base value calcium sulfonate 25-35 parts, conversion agent 2-3 parts, calcium hydroxide 5.5-7.5 parts, organic acid 1.8-2.85 parts, boric acid 2-4 parts, fatty acid 2-4 parts, anti-wear agent 0.5-1 part, antioxidant 0.5-1 part, rust inhibitor 0.5-0.8 part, the high base value synthetic calcium sulfonate includes C16 alkyl benzene sulfonate calcium and C20-C24 alkyl benzene sulfonate calcium.The present application develops a composite calcium sulfonate base grease for belt roaster in steel plant.Compared with traditional composite calcium sulfonate base grease, the belt roaster grease has more excellent wear resistance and high temperature resistance and other properties, and can better match the working condition characteristics of belt roaster.