59 results about "Thiophosphate" patented technology

Disclosed is a method for removing heavy metal ions from a phosphoric acid containing stream, the method may include: adding a diluted solution of a dialkyldithiophosphate compound having an alkyl chain length ranging from 8 to 12 carbon atoms to the phosphoric acid containing stream to form a heavy metal ion complex; and separating the heavy metal ion complexes from the phosphoric acid containing stream.

The present disclosure provides methods for preparing oligonucleotides. In certain embodiments, the present disclosure provides methods for preparing oligonucleotides using cyclic-phosphate or cyclic-thiophosphate nucleosides. In certain embodiments, the present disclosure provides methods for preparing oligonucleotides using nucleophiles selected from substituted thiol nucleophiles, substituted nitrogen-based nucleophiles, substituted phosphine nucleophiles, halides, pseudohalides, azides, and substituted lithium-based nucleophiles.

This application discloses a dry-process negative electrode sheet and its preparation method, as well as a solid-state battery. The dry-process negative electrode sheet includes a modified sulfide solid electrolyte and a silicon-containing material. The modified sulfide solid electrolyte comprises a sulfide solid electrolyte and a coating layer located on at least a portion of the surface of the sulfide solid electrolyte. The coating layer comprises oxides and / or thiophosphates. This suppresses interfacial side reactions between the silicon-containing material and the sulfide solid electrolyte, reduces the consumption of the sulfide solid electrolyte during cycling, and improves the cycle life of the solid-state battery.

This invention belongs to the field of mineral flotation technology, and discloses a flotation collector for non-ferrous metal sulfide ores, its preparation method, and its application. The collector uses O,O-dialkyldithiophosphate as a starting material, and reacts sequentially with a halocarboxylic acid ester, hydrazine hydrate, potassium hydroxide, and carbon disulfide in anhydrous ethanol in a three-step reaction to obtain the target product, O,O-dialkyldithiophosphate hydrazide-N′-dithiocarbamate potassium. Its molecular structure simultaneously contains three active groups: a dithiophosphate group, an hydrazide group, and a dithiocarbamate group. This invention achieves efficient process connection and smooth transition by optimizing the material ratio, temperature, and time of each reaction step, and has advantages such as mild reaction conditions, simple operation, few side reactions, high yield, and stable product. The prepared collector exhibits excellent collecting performance and good selectivity for non-ferrous metal sulfide ores such as chalcopyrite, and is suitable for widespread application in sulfide ore flotation processes.

The invention relates to the field of lubricating oil, in particular to a compressor oil composition which is prepared from the following components in parts by weight: 0.005 to 0.2 part of an anti-rust agent, 0.05 to 1 part of an extreme pressure anti-wear agent, 0.01 to 0.5 part of a friction reducing agent, 3 to 8 parts of synthetic ester, 0.01 to 1 part of an antioxidant, 0.001 to 0.1 part of an anti-foaming agent and 90 to 97 parts of base oil. The anti-friction agent is a trimethylolpropane-triacid ester derivative, the anti-rust agent is formed by mixing an alkenyl succinic acid half-ester derivative and a carboxyl imidazoline derivative, and the anti-wear reagent at extreme pressure is formed by mixing triphenyl phosphate and an alkyl thiophosphate derivative. The antioxidant is formed by mixing any two of alkyl diphenylamine, alkyl phenyl-alpha-naphthylamine and alkyl hindered phenol. The invention further relates to a preparation method of the compressor oil composition. The compressor oil composition provided by the invention has excellent washing resistance and rust resistance.

The invention discloses a surface protection layer of an ultrathin lithium strip as well as a preparation method and application of the surface protection layer, and belongs to the technical field of lithium batteries. The surface protection layer is formed after lithium metal reacts with a composite additive, and the composite additive is composed of solid powder and an organic solvent; wherein the solid powder is selected from one or more of dialkyl dithiophosphate or metal fluoride; the organic solvent is selected from any one of dimethyl sulfoxide, formamide, butyrolactam, acetone, 1, 4-dioxane, tetrahydrofuran, trimethyl phosphate, triethyl phosphate and propylene carbonate. The electrochemical performance of the produced lithium strip with the surface protection layer is remarkably improved, large-scale production can be achieved on the premise that existing equipment is not transformed and technological processes are not increased by means of the preparation method, the technical advantages in cost and technology are achieved, and therefore the lithium strip with the surface protection layer has a good application prospect. The surface protection layer of the ultrathin lithium strip and the preparation method of the surface protection layer have good application prospects.

The application belongs to the technical field of cutting oil, and specifically provides a kind of composite cutting oil and a preparation method thereof.A kind of composite cutting oil uses coconut oil, mineral oil, poly-alpha olefin as mixed base oil, adds specific amount of rust preventive, polyethylene glycol, nano molybdenum disulfide, antioxidant, dispersant and composite additive obtained by chemical combination of carboxylated multi-walled carbon nanotube surface and thiophosphate amine salt, etc., through the synergistic effect of multiple components, the prepared cutting oil has excellent lubricity, extreme pressure and wear resistance, and is suitable for severe extreme pressure cutting environment.

The invention discloses a zinc thiophosphate material with a yolk double-shell structure as well as a preparation method and application thereof, and relates to the technical field of sodium ion batteries. The preparation method comprises the following steps: firstly, preparing a ZIF-8 precursor template through a zinc source and solvothermal reaction of 2-methylimidazole, and then sequentially carrying out coating, template etching, synchronous carbonization and vulcanization treatment and phosphorus vulcanization treatment on the ZIF-8 precursor template to finally obtain the ZnPS3 / NC-C material with the yolk double-shell structure and excellent electrochemical performance. Compared with a traditional transition metal thiophosphate preparation process, the method is safer in process, and the yolk double-shell morphology of the metal phosphorus sulfide can be accurately regulated and controlled. Compared with pure zinc thiophosphate prepared by a traditional process, the prepared ZnPS3 / NC-C material with the yolk double-shell structure has the characteristics of hollow and porous characteristics, high specific surface area and structural stability, and shows relatively high first charge-discharge efficiency and excellent cycle stability when being used as a sodium-ion battery negative electrode material.

The invention discloses a graphene composite lubricating additive as well as a preparation method and application thereof, and belongs to the technical field of lubricating additive preparation. Modified graphene, nano molybdenum disulfide, a dispersing agent and thiophosphate amine salt are mixed and react to obtain the graphene composite lubricating additive. According to the invention, a triple synergistic stabilization mechanism of chemical anchoring, physical blocking and steric hindrance is utilized, so that the compatibility of graphene and base oil is improved, and the dispersion stability of the graphene composite lubricating additive is improved. Meanwhile, the prepared graphene composite lubricating additive can reduce the temperature of a friction pair, can form a friction reaction film containing C, Mo, P and O elements on the surface of the friction pair, reduces friction wear, shows good friction reduction and wear resistance, provides a theoretical basis and technical support for development of high-performance lubricating oil additives and application of high-temperature working conditions, and has wide application prospects. And the high-temperature lubrication problem of the marine diesel engine is solved, and remarkable engineering value and application prospects are achieved.

The invention belongs to the technical field of flotation reagents, and discloses a use method for activating minerals by utilizing ion waste liquid generated by preparing alkyl thiophosphate. The method comprises the following steps: removing or reducing impurities in the waste liquid to obtain purified waste liquid which can be used as an activating agent; and then, in the flotation operation, ore to be treated is crushed, ground and pulped, an inhibitor, the activating agent, a collecting agent and a foaming agent are sequentially added, and target concentrate is obtained after stirring, air inflation and flotation. The activation potential of the alkyl thiophosphate waste liquid on minerals is found for the first time, industrial wastewater is converted into the efficient flotation activating agent, and a traditional activating agent can be replaced and strengthened. According to the method, the pollution problem of the alkyl thiophosphate waste liquid is solved, the flotation reagent cost is reduced, meanwhile, the concentrate grade and the recovery rate of valuable minerals such as zinc ore, gold ore, copper ore and pyrite can be improved, the requirement for green mine construction is met, and a new path is provided for efficient separation of low-grade ore.

Provided is the use of two-dimensional nanomaterials in the inhibition of a coronavirus, and specifically disclosed is the use of the two-dimensional nanomaterials in the preparation of a medicament for treating or preventing diseases caused by a coronavirus or of a material for adhering to or inhibiting the coronavirus. The two-dimensional nanomaterial is selected from the group consisting of copper indium thiophosphate (CIPS) nanosheet, graphene oxide nanosheet, molybdenum disulfide nanosheet, black phosphorus nanosheet and mixtures thereof. The coronavirus is selected from one of HCoV-229E, HCoV-OC43, HCoV-NL63, HCoV-HKU1, SARS-CoV, SARS-CoV2 or MERS-CoV. The diseases caused by the coronavirus are diseases caused by coronavirus infection. The material has the advantages of being simple to prepare, having a high biological safety and an excellent effect.

The invention relates to continuous reaction equipment of N-n-butyl thiophosphoric triamide and a preparation method of the N-n-butyl thiophosphoric triamide. The invention discloses a continuous preparation method of N-n-butyl thiophosphoric triamide and reaction equipment, and belongs to the technical field of fine chemical engineering. The method comprises the following steps: uniformly mixing thiophosphoryl chloride serving as an initial raw material with a solvent in a batching kettle to prepare a thiophosphoryl chloride solution; the method comprises the following steps: respectively adding a thiophosphoryl chloride solution, n-butylamine and inert gas into a micro-channel reactor through a flow pump to carry out substitution reaction, and separating hydrogen chloride gas and an N-n-butyl dichlorothiophosphoramide solution through a gas-liquid separator; then adding the N-n-butyl dichlorophosphoramide thiophosphate solution and liquid ammonia into a tubular reactor through a flow pump to obtain an N-n-butyl thiophosphoric triamide solution; and finally, extracting, washing, concentrating an organic phase, crystallizing, separating and drying to obtain the high-purity N-n-butyl thiophosphoric triamide. The method is safe, efficient, simple and convenient to operate, good in reaction selectivity, high in yield, low in pollutant emission, low in production cost and suitable for industrial production.

The present invention relates to a method for synthesising thiophosphate Li3PS4 particles, from a solvate complex formed between Li3PS4 and a first solvent S1, the method comprising: a) a step of dispersing the solvate complex of Li3PS4 and the first solvent S1 in a non-complexing second solvent S2, the second solvent S2 being miscible with the first solvent S1 and having: - a logarithm of the octanol-water partition coefficient logP greater than or equal to 1.1, - a molecular density greater than or equal to 0.869 g / cm3, and - a dipole moment less than or equal to 2.32 D, so as to cause thiophosphate Li3PS4 particles to precipitate; b) a step of separating the thiophosphate Li3PS4 particles precipitated in step a); and c) a step of drying the thiophosphate Li3PS4 particles separated in step b).

The instant disclosure generally relates to lubricating compositions having an oil of lubricating viscosity, an oil of lubricating viscosity, a zinc dialkyl dithiophosphate antiwear agent, a calcium detergent, and a magnesium detergent, wherein the ratio of magnesium provided by the magnesium detergent to calcium provided by the calcium detergent is from 0.16 to 0.3.

The subject matter of the invention provides a viable solvent treatment method for manufacturing surface-modified alkali metal sulfides or alkali metal thiophosphates, especially surface-modified lithium thiophosphates, e.g. Li6PS5Cl (mLi6PS5Cl). Utilizing nonpolar organic solvents to reduce the concentration of additives with Lewis-basic activity, the surface of, for example Li6PS5Cl, is modified to improve the ionic conductivity of electrolytes of type Li6PS5Cl or other lithium thiophosphates.

The invention relates to the field of lithium ion batteries, in particular to a preparation method of a flexible porous electrode based on two-dimensional thiophosphate. Two-dimensional thiophosphate (2D MPS3) is used as an active substance, single-walled carbon nanotubes (SWCNTs) are used as a conductive agent, and a melamine porous body is used for providing support for the electrode; the preparation method comprises the following steps: (1) uniformly mixing a 2D MPS3 colloidal solution with SWCNTs slurry; (2) dropwise adding a mixed colloidal solution composed of the 2D MPS3 colloidal solution and the SWCNTs slurry into the melamine porous body; and (3) directly carrying out vacuum drying on the melamine porous body loaded with the mixed colloidal solution at room temperature, wherein the obtained flexible porous electrode shows good electrochemical performance. The preparation method has the advantages of simple process, low cost, easiness in scale amplification and the like, and lays a foundation for application of 2DMPS3 in the flexible lithium ion battery.

The application relates to the field of cutting fluids, and discloses an inhibitor, a high-efficiency lubricating water-based cutting fluid and application thereof. A long-chain alkyl phosphate betaine is selected as a key inhibitor. Phosphate anions and quaternary ammonium salt cations in the molecule can be firmly adsorbed on metal surfaces with different electricities, and long-chain alkyls can form a dense hydrophobic layer on the metal surface, laying a foundation for multi-metal compatibility. The inhibitor has a synergistic effect with a semi-synthetic composite lubricating system. In addition, the system uses a thiophosphate and an organic phosphonic acid to be compounded as extreme pressure anti-wear agents. In the absence of chlorine and boron, the extreme pressure anti-wear agents can form a high-strength chemical reaction film with the above-mentioned adsorption film under extreme pressure conditions, so that the carrying capacity is further improved.

The invention belongs to the technical field of organic synthesis, and provides a method for continuously synthesizing a phosphorothioate compound, the preparation method can be completed only by pumping a compound of a formula (II) and a toluene solution of sulfur into a microchannel reactor and staying for 2-5 minutes, the reaction process is safe and easy to control, the engineering amplification is simple and efficient, and the yield is high. The common problems of success of a small test and failure of a pilot test in traditional chemical amplification are solved.

The invention belongs to the technical field of mineral flotation, and discloses a flotation collecting agent for non-ferrous metal sulfide ore and a preparation method and application thereof.O, O dialkyl dithiophosphate serves as an initial raw material of the collecting agent, and the target product O, O dialkyl dithiophosphate, halogenated carboxylic ester, hydrazine hydrate, potassium hydroxide and carbon disulfide are sequentially subjected to three-step reaction in absolute ethyl alcohol to prepare O, O dialkyl dithiophosphate; the molecular structure of the N, O-dialkyl phosphorodithioic acid hydrazide-N '-potassium dithioformate simultaneously contains three active groups, namely a phosphorodithioate group, a hydrazide group and dithioformate. By optimizing the material ratio, temperature and time of each step of reaction, efficient connection and stable transition of the process are realized, and the method has the advantages of mild reaction conditions, simplicity and convenience in operation, few side reactions, high yield, stable product and the like. And the prepared collecting agent shows excellent collecting performance and good selectivity on non-ferrous metal sulfide ores such as chalcopyrite, and is suitable for popularization and application in a sulfide ore flotation process.

The invention discloses a lead thiophosphate composite nitrogen-doped carbon porous microsphere material as well as a preparation method and application thereof, and belongs to the technical field of electrochemical energy storage materials. The preparation method of the lead thiophosphate composite nitrogen-doped carbon porous microsphere material comprises the following steps: dissolving a lead salt in an organic solvent, dissolving 2-methylimidazole in water, mixing the two solutions, carrying out solvothermal reaction, separating out a product, and reacting with a gas-phase sulfur source and a phosphorus source under the protection of inert gas to obtain the lead thiophosphate composite nitrogen-doped carbon porous microsphere material. The lead thiophosphate composite nitrogen-doped carbon porous microsphere composite material is obtained. According to the invention, a metal organic framework template method and a chemical vapor deposition method are ingeniously combined, and a brand new path for controllably preparing the lead thiophosphate composite nitrogen-doped carbon porous microsphere material is provided. When the prepared lead thiophosphate composite nitrogen-doped carbon porous microsphere material is used as a sodium ion battery negative electrode, a porous microsphere negative electrode formed by compounding lead thiophosphate and nitrogen-doped carbon shows remarkably improved electrochemical performance.

The invention discloses a method for preparing alkyl phosphorothioate through direct functionalization of a C-H bond, and belongs to the technical field of organic synthesis. The method comprises the following steps: adding a compound 1, a P (O) SH compound 2a, a photocatalyst, a copper catalyst and an oxidizing agent into a solvent, reacting in a protective atmosphere and under the irradiation of visible light, and after the reaction is completed, performing post-treatment to obtain the alkyl thiophosphate. The method for synthesizing the alkyl phosphorothioate through direct sulfur and phosphorus esterification of the C-H bond is a simple and efficient synthesis method. The method does not need to functionalize the raw materials in advance, greatly enriches product diversity, and has the characteristics of few steps, atom economy, simple operation and the like.

The present application relates to the technical field of lubricating grease, in particular to a lubricating grease composition for angle grinder and a preparation method thereof. The present application provides a lubricating grease composition for angle grinder, which comprises base oil, thickening agent and additive, wherein the additive comprises extreme pressure anti-wear agent, and the extreme pressure anti-wear agent comprises molybdenum-containing extreme pressure anti-wear agent, amino thioester extreme pressure anti-wear agent and zinc thiophosphate salt extreme pressure anti-wear agent with a mass ratio of (1.5-4):(0.5-2):(1-3). The present application effectively reduces the wear of gears when used in angle grinder through the selection and specific compounding of extreme pressure anti-wear agent, and at the same time can prolong the service life of angle grinder, meeting the lubrication requirements of angle grinder gears. The present application is matched with suitable base oil and thickening agent system, and the obtained lubricating grease composition can play excellent adhesion performance under high speed working conditions of angle grinder, reducing the risk of grease leakage of angle grinder while ensuring lubricity.

The present disclosure provides methods for preparing oligonucleotides. In certain embodiments, the present disclosure provides methods for preparing oligonucleotides using cyclic-phosphate or cyclic-thiophosphate nucleosides. In certain embodiments, the present disclosure provides methods for preparing oligonucleotides using nucleophiles selected from substituted thiol nucleophiles, substituted nitrogen-based nucleophiles, substituted phosphine nucleophiles, halides, pseudohalides, azides, and substituted lithium-based nucleophiles.

The present application relates to fine chemical technology field, especially to a kind of anti-micro pitting additive and its preparation and application.The present application uses starch masking method, uses hydroxylated boron nitride and O, O-dialkyl thiophosphoryl chloride to carry out chemical reaction to prepare this anti-micro pitting additive, and the core skeleton is hexagonal boron nitride nanosheet, one side contains hydroxyl functional group, the other side is covalently connected O, O-dialkyl thiophosphate, and the process condition used is mild;The anti-micro pitting additive prepared by the present application can be used as multifunctional lubricant additive, utilizes the filling and interlayer slip of boron nitride nanosheet, the chemical adsorption of hydroxyl surface and friction pair, the tribological chemical reaction of O, O-dialkyl thiophosphate and friction pair synergistic effect, obtains good extreme pressure, antiwear, anti-micro pitting and anticorrosion etc., suitable for long-acting stable friction and micro pitting lubrication protection under harsh working conditions.

This invention relates to a method for determining the content of (4-tert-butylphenyl)diphenyl thiophosphate in hydraulic oil, lubricants, and greases, comprising the following steps: 1) Sample pretreatment: mixing the liquid sample and setting aside; 2) Sample extraction: ultrasonically extracting the pretreated sample using a 1:1 solvent of hexane and dichloromethane; 3) determining the concentration of (4-tert-butylphenyl)diphenyl thiophosphate in the sample extraction solution obtained in step 2) using GC-MS; 4) calculating the content of (4-tert-butylphenyl)diphenyl thiophosphate in the sample based on the concentration of (4-tert-butylphenyl)diphenyl thiophosphate in the sample extraction solution obtained in step 3). This invention is not only rapid and simple to use, but also enables accurate determination of the content of (4-tert-butylphenyl)diphenyl thiophosphate, solving the problem of determining the content of (4-tert-butylphenyl)diphenyl thiophosphate.

The invention discloses an antimony thiophosphate composite nitrogen-doped carbon nanowire material as well as a preparation method and application thereof, and belongs to the technical field of electrochemical energy storage materials. The preparation method of the antimony thiophosphate composite nitrogen-doped carbon nanowire material comprises the following steps: reacting antimony salt with 2-methylimidazole in water, separating out a product, and reacting the product with a gas-phase sulfur source and a phosphorus source under the protection of inert gas to obtain the antimony thiophosphate composite nitrogen-doped carbon nanowire material. The prepared antimony thiophosphate composite nitrogen-doped carbon nanowire material has the advantages of high electronic conductivity, stable microstructure and rapid ion transmission capability. And when being used as a sodium ion battery negative electrode material, the composite material can show high reversible specific capacity, excellent rate capability and long cycle life.

A process for removing heavy métal ions from a phosphoric acid containing stream, may include adding a diluted solution of a dialkyldithiophosphate compound having an alkyl chain length ranging from 8 to 12 carbon atoms to the phosphoric acid containing stream to form heavy métal ion complexes; and separatingthe heavy metal ion complexes from the phosphoric acid containing stream.

The invention relates to a preparation method of circular RNA (Ribonucleic Acid), which is characterized in that an in-vitro transcription reaction and an RNA cyclization reaction are sequentially carried out in a single reaction system, and comprises the following steps: S1, reacting for 1-3 hours at 30-42 DEG C in a reaction system containing a DNA (Deoxyribose Nucleic Acid) template, NTP (Nitrophenyl Thiophosphate), a buffer solution, in-vitro transcriptase and Mg < 2 + >; and S2, directly heating the reaction system in the step S1 to 45-65 DEG C, reacting for 5-30 minutes, and cyclizing the linear RNA to obtain a circular RNA product. According to the method, the reaction kinetics problem of IVT and cyclization is solved through temperature dynamic programming, and the technical prejudice that the field depends on the purification step for a long time is broken through. According to the scheme, the preparation efficiency is improved, and reliable technical support is provided for large-scale production and clinical application of the circular RNA.

This invention discloses a superlubricating microcapsule, its composite material, and a method for preparing them. The superlubricating microcapsule comprises a core material and a wall material covering the core material. The core material includes component A and component B. Component A is one or more of the following: molybdenum dialkyl dithiophosphate oxydiphosphate, molybdenum dialkyl dithiocarbamate, molybdenum amine complex, molybdenum naphthenate, molybdenum alkyl salicylate, nitrogen-containing molybdenum dialkyl dithiophosphate oxydiphosphate, bisphenol molybdenum, molybdenum thiophosphate, molybdenum hydroxamic acid, molybdenum fatty acid, organic molybdate, Schiff base molybdenum, trimeric molybdenum salt, ethyl thiotungstate, propyl thiotungstate, and butyl thiotungstate. Component B is an ionic liquid or lubricating oil. The superlubricating microcapsule composite material of this invention is made of superlubricating microcapsules and a matrix material with a core-shell structure. The matrix material includes a solid lubricant core material and a polymer shell material covering the core material. The preparation method of this invention is simple, feasible, and highly operable, enabling macroscopic superlubricity in atmospheric environments, and has high application value.

The invention discloses a preparation method of wear-resistant water-ethylene glycol flame-retardant hydraulic fluid, and belongs to the field of hydraulic oil. Comprising the following steps: step 1, slowly dropwise adding isooctanol into PSC13 at 0-5 DEG C, and reacting to obtain thiophosphate; 2, thiophosphate, polyether amine, a basic catalyst and methylbenzene are mixed, the temperature is increased, a reaction is conducted, aftertreatment is conducted, and thiophosphate complex ester amine salt is obtained; 3, mixing and dissolving a tackifier, water and ethylene glycol to obtain a basic solution; and step 4, mixing the thiophosphoric acid diester amine salt, the antirust agent, the defoaming agent and the basic liquid to obtain the wear-resistant water-ethylene glycol flame-retardant hydraulic fluid. A sulfur-phosphorus active center and a hydrophilic group which have a synergistic effect are constructed in molecules of the water-soluble thiophosphoric acid diester amine salt, so that the anti-wear agent can efficiently form a composite protective film in the friction process, and the extreme pressure anti-wear performance is remarkably improved.