13 results about "Propanesultone" patented technology

The present invention uses commercially available 3-aminopropylsilane coupling agent, diallylamino polyether acrylate, and an alkylating agent, or γ-propanesultone, or γ-butyrolactone as raw materials, and through an aza-Michael addition reaction and a quaternization reaction, a multifunctional silane coupling agent containing one or more quaternary ammonium cations, or sulfobetaine, or carboxybetaine in its molecular structure is prepared, which is used for the surface modification of bioactive glass, and the bioactivity, antibacterial and antifungal properties, and hydrophilicity enhancement effects after the surface modification of bioactive glass are obtained.

The invention relates to the technical field of laundry detergents, and discloses a laundry detergent containing a modified gemini quaternary ammonium salt surfactant and a preparation method thereof.The laundry detergent is prepared from iminodiacetonitrile, cardanol glycidyl ether, 1, 8-dibromooctane, Raney Ni, 1, 3-propane sultone, brominated alkane and the like as raw materials through a one-step method. The modified gemini quaternary ammonium salt surfactant is obtained through an epoxy ring-opening reaction, a quaternization reaction, a reduction reaction, a ring-opening alkylation reaction and a substitution reaction. The preparation method comprises the following steps: adding alkyl glycoside and the modified gemini quaternary ammonium salt surfactant into deionized water, uniformly stirring and mixing, adding alkaline protease and the like, and stirring and mixing to obtain the laundry detergent containing the modified gemini quaternary ammonium salt surfactant. Tests prove that the laundry detergent prepared by the invention has better dirt-removing power and antibacterial effect.

The invention provides an antifouling wear-resistant acrylic plate and a preparation method thereof, and belongs to the technical field of acrylic plates. The preparation method comprises the following steps: preparing the modifier; modifying the carbon nano tube; preparing an antifouling additive; and preparing the antifouling wear-resistant acrylic plate. The preparation method comprises the following steps: respectively dissolving polysuccinimide and dopamine hydrochloride, mixing for reaction, adding 3-dimethylaminopropylamine for reaction, and finally adding 1, 3-propane sultone for reaction to obtain a modifier containing zwitter-ion groups, modifying acidified carbon nanotubes by using the modifier, and then adding the zwitter-ion groups into the modified carbon nanotubes to obtain the modified carbon nanotubes with the zwitter-ion groups. The wear resistance and the antifouling property of the prepared acrylic plate can be obviously improved.

The application belongs to the technical field of all-vanadium redox flow battery separators, and specifically discloses a sulfonated polyether ether ketone / polyaniline composite membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing polyether ether ketone with concentrated sulfuric acid, heating and reacting in a water bath, and preparing sulfonated polyether ether ketone solids; mixing molybdenum disulfide with toluene, ultrasonicating, adding 1,3-propanesultone, and heating in an oil bath to prepare sulfonated molybdenum disulfide powder; mixing the sulfonated molybdenum disulfide powder, polyaniline and a DMF solution, stirring and ultrasonicating, adding sulfonated polyether ether ketone solids, stirring to obtain casting membrane slurry, coating on a glass plate, drying into a film, sequentially immersing in a sulfuric acid solution and deionized water, and obtaining the sulfonated polyether ether ketone / polyaniline composite membrane. The application discloses a sulfonated polyether ether ketone / polyaniline composite membrane as well as a preparation method and application thereof. The sulfonated polyether ether ketone / polyaniline composite membrane has high proton conductivity, can maintain a low vanadium ion permeability, and improves the electrochemical performance of an all-vanadium redox flow battery.

In order to solve the deficiency of 1,3-propanesultone as an additive, the application provides a lithium battery electrolyte and a lithium battery. The electrolyte comprises an organic solvent, a lithium salt and an additive, and the additive comprises a thiophene compound as shown in general formula (I), wherein R1 is a non-hydrogen group, R2-R3 are H or an organic group, and at least one of R1-R3 is a halogen-substituted or unsubstituted pinacol borate group. The thiophene compound in the electrolyte of the application can replace 1,3-propanesultone, and can participate in the film formation of the positive and negative electrodes, improve the electrode kinetic and thermodynamic properties, reduce the impedance of the interface film, reduce the gas production during battery formation and storage, improve the voltage drop of the battery during full charge storage, and improve the stability of the electrolyte.

Lithium-ion battery, characterized in that the filling coefficient a of the lithium-ion battery satisfies the following condition: 2.2 g / Ah ≤ a ≤ 2.8 g / Ah; the lithium-ion battery comprises an electrolyte, wherein the electrolyte contains a first solvent and an additive; The viscosity η of the first solvent meets the condition: η ≤ 0.6 mPa / s; The additive contains at least one of the following substances: vinylene carbonate, fluoroethylene carbonate, vinylethylene carbonate, ethylene sulfate and 1,3-propanesultone, and the mass fraction m of the additive in the electrolyte meets the condition: 5% ≤ m ≤ 12%.

The application discloses a secondary battery and an electronic device, and relates to the technical field of new energy sources. The secondary battery comprises a positive electrode, a negative electrode, an electrolyte and a diaphragm. The diaphragm comprises a polyolefin base material and a coating layer arranged on at least one surface of the polyolefin base material, wherein the coating layer comprises boehmite. The electrolyte contains a specific amount of 1,3-propanesultone, 1,3,6-hexanetricarbonitrile, lithium difluorophosphate, a boron-containing lithium salt and adiponitrile. The total amount of 1,3-propanesultone and 1,3,6-hexanetricarbonitrile, the total amount of lithium difluorophosphate and the boron-containing lithium salt and adiponitrile are within specific ranges, so that the secondary battery can have high energy density, good high-voltage life and good safety.

An electrolyte, a lithium-ion battery, and a vehicle. The electrolyte comprises an organic solvent, a fluorine-containing lithium salt, and a first additive. The organic solvent comprises a carboxylic acid ester and a carbonate ester. The first additive comprises a combination of 1,3-propanesultone and methylene methanedisulfonate. Based on the total mass of the electrolyte being 100%, the content of the carboxylic acid ester is S1, the content of 1,3-propanesultone is W1, and the content of methylene methanedisulfonate is W2; and S1, W1, and W2 satisfy (S1 / 120)<(W1+W2)<(S1 / 20). By means of the synergistic effect of the organic solvent, the fluorine-containing lithium salt, and the additive, low-temperature conductivity is greatly improved, effectively shortening the battery charging time at a low temperature. A prepared lithium-ion battery exhibits both excellent fast-charging performance and low-temperature performance without compromising high-temperature performance.

The application provides sulfobetaine modified carboxymethyl chitosan and a preparation method and application thereof. The preparation method comprises the following steps: under the protection of nitrogen, 1,3-propanesultone is subjected to nucleophilic addition reaction with N,N-dimethylallylamine to prepare vinyl sulfobetaine; then, the monomer and carboxymethyl chitosan are subjected to reaction in an aqueous medium through a free radical polymerization grafting technology; after the reaction is completed, the sulfobetaine modified carboxymethyl chitosan is obtained through filtration, dialysis and freeze-drying. The sulfobetaine modified carboxymethyl chitosan of the application can inhibit the biofilm formation of pathogenic bacteria such as escherichia coli and staphylococcus aureus through a dynamic hydration effect to inhibit bacterial adhesion; and the preparation method has the advantages of mild reaction condition, good process repeatability and controllable production cost, and has application value in the fields of medical textiles and functional protective clothing.

The present invention aims to solve the above-mentioned problems and to provide a large-capacity cylindrical lithium secondary battery that excels in various performance aspects such as output characteristics, lifespan characteristics, and rapid charging characteristics. [Solution] The present invention relates to a cylindrical lithium secondary battery comprising a jelly-roll type electrode assembly in which a positive electrode plate, a negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate are wound in one direction, a battery can in which the electrode assembly is housed, an electrolyte poured into the battery can, and a seal that seals the open end of the battery can, wherein the electrolyte comprises a lithium salt, an organic solvent, and as additives lithium difluorophosphate, vinylene carbonate, and 1,3-propanesultone, and satisfies the following formula (1). Formula (1): 3.5≦W LiDFP / (W VC +W PS ) × Φ / H × 100 ≤ 20

The invention discloses a demulsifier for crude oil and a preparation method thereof. The demulsifying agent is prepared from the following components in parts by mass: 590 to 610 parts of beet sulfonate alkalized hyperbranched polyether, 180 to 220 parts of aromatic solvent oil and 180 to 220 parts of cosolvent, the sulfonic acid beet alkalized hyperbranched polyether is prepared by taking pentaerythritol as a core and carrying out ring opening polymerization of epoxypropane / ethylene oxide, epoxidation of an epoxy chloropropane end, ring opening of dimethylamine, sequential grafting of 1, 2-epoxybutane / epoxypropane / ethylene oxide and reaction of 1, 3-propane sultone. The demulsifier is suitable for demulsification and dehydration treatment of a high-salinity polymer-containing extracted crude oil system, and high dehydration rate, low dehydrated water turbidity and low dehydrated oil residual water content can be obtained under the condition of low dosage.

The present invention uses a commercially available 3-aminopropylsilane coupling agent, 2-hydroxyethyl methacrylate or 2-hydroxyethyl acrylate, and one of an alkylating agent, a polyether sulfonate, γ-propanesultone or γ-butyrolactone as raw materials, and prepares a functionalized silane coupling agent containing a dihydroxy quaternary ammonium cation, or a dihydroxy sulfobetaine, or a dihydroxy carboxybetaine in its molecular structure through a Michael addition reaction and a quaternization reaction, which is used for the surface modification of bioactive glass, and obtains enhanced biocompatibility, antibacterial and antifungal properties, and hydrophilicity after the surface modification of bioactive glass.

The invention discloses an electrolyte for improving high-temperature cycle performance and storage performance of a sodium-ion battery and application of the electrolyte, and relates to the field of sodium-ion batteries. The electrolyte is composed of a sodium salt, an organic solvent and a proper amount of additive, and the additive is at least one of lithium difluoro (oxalato) borate, sodium difluoro (oxalato) borate, sodium nitrate, 1, 3-allylsultone and ethylene sulfate; and the concentration of the additive in the electrolyte is 0.2 to 0.4 mol / L. By adding a proper amount of the additive and adjusting the concentration of the sodium salt, formation of a stable interface layer on the interface of the positive electrode and the negative electrode is facilitated, the stability of the interface can still be kept even in the high-temperature storage process, and the sodium ion battery prepared from the electrolyte has excellent high-temperature and room-temperature cycle performance and high-temperature storage performance.