26 results about "Aromatic solvent" patented technology

The present invention relates to a process for needle coke production by co-processing coal tar pitch (CTP) with petroleum streams. The process utilizes a ‘multi-residence time mild thermal cracking’ of coal tar pitch with petroleum streams (CLO, PFO) followed by solvent-assisted selective separation of undesirable quinoline insoluble (QI) and solid catalyst fines from the mixed pitch and delayed coking thereafter to produce needle coke. The solvent employed for feedstock purification is a mixture prepared from an aromatic solvent which is a lighter fraction formed by mild and severe thermal cracking of mixed feedstock, an aliphatic solvent and a polar extraction solvent.

Forming a catalyst system in the absence of aromatic solvents may be desirable. Catalyst systems effective for olefin polymerization may comprise a support material, an aluminum oxane formed in situ on the support material from a trialkylaluminum compound and water in the absence of aromatic solvents such as toluene, and a metallocene with C1 symmetry and containing a Group 4 metal. To form the catalyst system, the support material can be slurried in an aliphatic hydrocarbon solvent in the presence of water and contacted with a trialkylaluminum compound to form a supported activator, and the supported activator can be contacted with a metallocene with C1 symmetry and containing a Group 4 metal.

A resin sheet including a support and a resin composition layer formed on the support, in which the resin composition layer contains (A) an epoxy resin, (B) an organic solvent, (C) an inorganic filler, and (D) a stress relaxing material, in which a content of an aromatic solvent having a boiling point of lower than 120° C. in the (B) component is in the range of 0 to 9% by mass relative to 100% by mass of total of the (B) component, can suppress an irregularity after lamination and a warpage after curing.

The application discloses a method for cracking tar into high value-added products, which adopts a route of separating light components by fractional distillation and then hydrogenating heavy components, so that the yield of target products can be affected by hydrogenation of naphthalene, methyl naphthalene and the like below 250 DEG C in the process of hydrocracking, and on the other hand, the components below 250 DEG C account for about 30% to 50%, so that the hydrogen consumption in the subsequent hydrocracking can be reduced by separating the components in advance. After the heavy fraction is subjected to hydrocracking, part of polycyclic aromatic hydrocarbons in the heavy fraction can be cracked into part of monocyclic aromatic hydrocarbons, which can be used for producing aromatic solvent oil, so that the light fraction in the hydrocracking product is separated and mixed into the light fraction generated by pre-fractionation, and the next step processing is carried out, so that the yield of high value-added products can be further improved.

An electrolyte composition for lithium secondary batteries includes a lithium salt and an organic solvent. The organic solvent includes an aromatic solvent with fluorinated toluene derivatives (such as 2,3-difluorotoluene) and an ether solvent. The lithium salt can include compounds like Li(CF3SO2)2N, Li(SO2F)2N, LiPF6, and others. The aromatic solvent is present at about 30-90 vol % of the electrolyte, and the lithium salt molarity ranges from 0.1 to 3.0 M. This composition improves battery performance by enhancing stability, conductivity, and compatibility with lithium metal or lithium-ion electrodes, making it suitable for high-energy-density applications in lithium secondary batteries.

An electrolyte composition for lithium secondary batteries contains a lithium salt and an organic solvent. The organic solvent includes an aromatic solvent with fluorinated toluene derivatives (such as 2,3-difluorotoluene) and an ether solvent. The lithium salt may contain compounds such as Li(CF3SO2)2N, Li(SO2F)2N, LiPF6, and others. The aromatic solvent is present in the electrolyte at a concentration of approximately 30–90 vol%, and the molarity of the lithium salt ranges from 0.1 to 3.0 M. This composition improves battery performance by increasing stability, conductivity, and compatibility with lithium-metal or lithium-ion electrodes, making it suitable for high-energy-density applications in lithium secondary batteries.

A method for separating high-purity mesitylene from heavy aromatics by using adsorption separation technology, the method selects X molecular sieve treated by ammonium salt after ion exchange of alkaline earth metal and transition metal as the active component of adsorbent, uses the method of adsorption separation, passes heavy aromatics raw material into the adsorbent, adsorbs the mesitylene therein, obtains raffinate, passes in desorbent, desorbs the adsorbed mesitylene, obtains extract, the desorbent in the extract and raffinate can be recycled, the remaining components of the extract are high-purity mesitylene product, the remaining components of the raffinate can be used as gasoline blending component or high-boiling aromatic solvent oil component. The method can solve the problem that high-purity mesitylene cannot be obtained from heavy aromatics in the existing process.

The application belongs to the technical field of thermoplastic polyurethane elastomers, and particularly relates to a photo-induced deformation TPU material and a preparation method and application thereof. The photo-induced deformation TPU material comprises the following raw materials in parts by weight: 30-38 parts of diisocyanate; 5-10 parts of modified black phosphorus nanosheet; 40-50 parts of polycarbonate diol; 9-12 parts of chain extender; and 0.5-1 part of catalyst. The preparation method of the modified black phosphorus nanosheet comprises the following steps: performing ice-water bath ultrasonic treatment on black phosphorus crystals and an amino compound in a polar aprotic solvent to obtain amino-functionalized black phosphorus nanosheet; and dispersing the amino-functionalized black phosphorus nanosheet in an aromatic solvent to make it react with diphenylmethane diisocyanate to obtain the modified black phosphorus nanosheet. The photo-induced deformation TPU material prepared by using the modified black phosphorus nanosheet as a light response filler has excellent photo-induced deformation performance, good mechanical performance and cycle stability.

The subject of the invention is a method for the fluorescent detection of aromatic compounds using 1,5-diisocyanonaphthalene. The invention is based on the fluorescent properties of 1,5- diisocyanonaphthalene (1,5-DIN) in different aromatic solvents, demonstrating its potential for distinguishing between aromatics based on emission spectra. The spectra can be classified into benzene, toluene, and xylene types and are suitable for identifying various substituted benzenes. The unique properties of 1.5-DIN emissions can be used to analyze BTX mixtures and design self- organizing systems such as foldamers.

The invention relates to an efficient oil-soluble asphalt dispersant. The dispersant is prepared from the following raw materials in parts by weight: 20-30 parts of polyisobutylene succinic anhydride, 15-25 parts of fatty alcohol-polyoxyethylene ether, 8-15 parts of organic amine, 30-50 parts of an aromatic solvent and 1-3 parts of an antioxidant. The oil-soluble asphalt dispersant disclosed by the invention has excellent dispersing performance, so that asphaltene can be uniformly dispersed in an oil phase, and deposition and aggregation of the asphaltene are effectively prevented; 2, the heat stability and the chemical stability are good, and a good dispersion effect can still be kept in a high-temperature, high-pressure and complex chemical environment; the preparation method is simple, raw materials are easy to obtain, cost is low, and the method is suitable for large-scale industrial production; the method has wide adaptability to petroleum with different sources and properties, and can meet diversified industrial requirements.

The utility model relates to the technical field of aromatic hydrocarbon solvent rectification, in particular to a high-boiling-point aromatic hydrocarbon rectification heat exchanger which comprises a base, a rotating handle is arranged on one side of the base, a screw rod is installed on one side of the rotating handle, the surface of the screw rod is in threaded connection with a clamping block, and sliding grooves are formed in the two ends of the middle of the upper surface of the base. Sliding grooves are formed in the two sides of the heat exchanger body, sliding blocks are slidably connected into the sliding grooves, clamping grooves are formed in one sides of the sliding blocks, the heat exchanger body is installed at the tops of the sliding blocks, a feeding port is formed in the top end of one side of the heat exchanger body, a discharging port is formed in the top end of the other side of the heat exchanger body, and convex rings are installed on the two sides of the heat exchanger body. A cover plate is connected into the convex ring in a sleeved mode, and vertical frames are installed on the two sides of the outer surface of the convex ring. According to the improved heat exchanger, tedious bolt dismounting and mounting operation is avoided, the dismounting and mounting efficiency of the heat exchanger is improved, meanwhile, the interior of the heat exchanger is easier to clean and maintain, and the distillation efficiency of an aromatic solvent is improved.

This invention discloses a method for preparing sulfide materials for solid electrolytes, belonging to the technical field of solid electrolyte materials. The invention uses anhydrous LiOH solid as the lithium source, hydrogen sulfide gas as the sulfur source, and aprotic aromatic solvents and / or hydrogenated aromatic solvents as the reaction medium to carry out a gas-solid heterogeneous acid-base reaction, thereby obtaining sulfide materials for solid electrolytes. This invention utilizes the proton inertness and chemical stability of aprotic or hydrogenated aromatic solvents to suppress side reactions at the source; it constructs a controllable three-phase reaction interface by leveraging their low solubility for LiOH and moderate solubility for H2S; it achieves in-situ dehydration using high boiling point characteristics, promoting complete reaction and preventing Li2S hydrolysis; and it promotes uniform nucleation and inhibits hard agglomeration through surface tension regulation and solvent barrier effects, thereby obtaining high-purity, uniformly sized nanoscale sulfide materials.

This invention discloses a method for preparing an alkali metal anionic polymerization catalyst in a nonpolar system and its application. The alkali metal anionic polymerization catalyst comprises a polycyclic aromatic hydrocarbon compound, an alkali metal, a nonpolar solvent, and a structure modifier. The polycyclic aromatic hydrocarbon compound includes one or more of naphthalene, anthracene, phenanthrene, pyrene, β-carbamate, benzenexanthracene, dibenzenexanthracene, and perylene. The alkali metal includes one or more of lithium, sodium, and potassium. The nonpolar solvent includes one or more of alkanes, cycloalkanes, and aromatic solvents with 5 to 12 carbon atoms. The structure modifier includes one or more of ether compounds, amine compounds, alkoxy alkali metal salts, phosphorus compounds, and crown ether compounds. The molar ratio of the alkali metal to the aromatic hydrocarbon compound is 0.8–5:1, and the molar ratio of the structure modifier to the polycyclic aromatic hydrocarbon compound is 0.001–10:1. This invention solves the fundamental problem of introducing impurities into the polymerization system during catalyst preparation by eliminating polar solvents.

A composition useful to make an anode for lithium ion batteries may be made by A method to form particles comprising dispersing an initial powder comprised of silicon in a solvent such as a solvent comprised of a C5 to C18 aliphatic solvent or polar aprotic aromatic solvent, milling the initial particles to form a milled silicon powder having an average size of about 10 to about 300 nanometers, and depositing the milled silicon powder on a spherical graphite powder having an average size from about 5 to 200 times larger than the average size of the milled silicon powder to form the particles.

The invention relates to the technical field of demulsifiers, in particular to a low-temperature demulsifier for crude oil dehydration and a preparation method and application thereof. The demulsifying agent is prepared from the following components: a hyperbranched polyether modified dendritic phenol amine demulsifying agent, polyether modified polysiloxane, linear diol block polyether, tall oil fatty acid diethanolamide, diethylene glycol monobutyl ether, aromatic solvent oil S-150 and isopropanol. The preparation method comprises the following steps: adding the aromatic solvent oil S-150 and the isopropanol according to the proportion, and stirring for 10-20 minutes; then adding a hyperbranched polyether modified dendritic phenol amine demulsifier, heating and stirring, then cooling to room temperature, continuously adding linear diol block polyether, and stirring; finally, sequentially adding polyether modified polysiloxane, tall oil fatty acid diethanolamide and diethylene glycol monobutyl ether; and continuously stirring to obtain the crude oil dehydration low-temperature demulsifier. The crude oil low-temperature demulsifier prepared in the invention has good universality, and has a good demulsification effect on different crude oils at a low temperature.

The present application belongs to the technical field of wastewater treatment, and particularly relates to a method for treating wastewater from a polyphenyl ether synthesis process and application. The method for treating wastewater from the polyphenyl ether synthesis process comprises the following steps: adding an aromatic solvent to wastewater from the polyphenyl ether synthesis process to perform a first extraction; then adding sodium persulfate to perform a first degradation reaction; adding the aromatic solvent again to perform a second extraction; then adding sodium persulfate to perform a second degradation reaction to obtain wastewater after the second degradation reaction; adjusting the pH of the wastewater after the second degradation reaction to neutral or alkaline, filtering, and completing the wastewater treatment. The present application greatly reduces the COD of the wastewater by re-extracting the oxidation intermediate product, can reduce the COD of the wastewater from the polyphenyl ether synthesis process to below 500 mg / L, and even to 206 mg / L, reduces the wastewater COD by 98.9%, and has the advantages of simple operation, low energy consumption, and green environmental protection.

The application discloses a kind of full solid waste upper layer cold regeneration asphalt mixture and preparation method thereof, the cold regeneration asphalt mixture in each material content is, asphalt pavement recycling material 48-52wt%, waste road concrete 44-48wt%, dilute asphalt 2-3wt%, cold mixing activator 1-1.8wt%, mineral powder 0.5-1wt%, dilute asphalt and cold mixing activator contain D60 de-aromatic solvent oil.The preparation method includes the following steps: preparation dilute asphalt and cold mixing activator;Asphalt pavement recycling material, waste road concrete, mineral powder are placed in oven and dried;First, asphalt pavement recycling material is placed in mixing pot and mixed, then cold mixing activator is added and mixed, then waste road concrete and dilute asphalt are added and mixed, and finally mineral powder is added and mixed, to obtain full solid waste upper layer cold regeneration asphalt mixture.The cold regeneration asphalt mixture prepared by the application has excellent comprehensive performance, can meet the performance requirements of upper layer hot mix asphalt mixture, and realizes high-level utilization.

Compositions may include an asphaltene dispersant that is the product of a reaction between a polysaccharide having at least two sugar subunits and one or more fatty acid reagents, and a petroleum fluid produced from a subterranean formation and containing asphaltenes therein. The asphaltene dispersant may have a molecular weight of at least 4000 Da. Compositions may further include an aromatic solvent. Methods may include contacting a hydrocarbon fluid with an asphaltene dispersant dissolved in an aromatic solvent, wherein the asphaltene dispersant is the product of the reaction of a polysaccharide and one or more fatty acid reagents. Methods may also include contacting a hydrocarbon fluid with an asphaltene, wherein the asphaltene dispersant is the product of the reaction of a polysaccharide and one or more fatty acid reagents and has a molecular weight of at least 4000 Da.

A first object of the present application is to provide an ultraviolet ray sensing member having excellent storage stability and image storage properties. Also, a second object of the present application is to provide a microcapsule, a method for producing a microcapsule, a dispersion liquid for forming an ultraviolet ray sensing layer, and an ultraviolet ray sensing kit. The ultraviolet ray sensing member of the present application is an ultraviolet ray sensing member provided with an ultraviolet ray sensing layer including a microcapsule containing a photoactive agent, a chromogenic agent, and an aromatic solvent. The aromatic solvent includes a heteroatom-containing aromatic solvent and a heteroatom-free aromatic solvent.

The invention discloses a coking inhibitor for delaying coking and a production process thereof, and belongs to the technical field of chemical additives. The anti-coking agent comprises an anti-coking agent intermediate, dioctyl zinc dithiophosphate and a high-boiling-point aromatic solvent, wherein the anti-coking agent intermediate is prepared through a Mannich reaction of a polyisobutylene succinimide amino derivative, benzaldehyde and 2, 6-di-tert-butylphenol under acid catalysis. The production process adopts a distributed control system automation control program and an SIS safety automation control program for linkage control, and comprises the steps of intermediate synthesis, compounding, quality monitoring, automatic filling and the like. The method has the advantages of high anti-coking efficiency, stable product quality, low temperature and low pressure in the production process, safety and controllability, and full-flow quality traceability, and is suitable for coking inhibition of an industrial scale delayed coking device.

The application provides a preparation method of 2-chloro-6-sulfhydryl benzoic acid. Specifically provided is a preparation method of 2-chloro-6-sulfhydryl benzoic acid, which comprises the following steps: mixing a divalent palladium catalyst, a phosphine ligand, an alcohol solvent and an aromatic solvent in a protective atmosphere, adding water to pre-activate to obtain a reaction liquid; mixing the reaction liquid, a compound 2, 6-dichlorobenzoic acid, a sulfuration reagent and an inorganic base in a protective atmosphere to perform a sulfuration reaction, adding a reducing metal and an acid to react to obtain 2-chloro-6-sulfhydryl benzoic acid. The preparation method provided by the application is simple in operation, high in yield and capable of being scaled up to industrial production.

A coating composition includes an epoxy resin, monomers capable of undergoing ring opening metathesis polymerization, an amine curative, a reactive epoxy diluent, a curing accelerator and a metathesis catalyst. A coating process includes forming the coating composition, depositing the coating composition on a substrate, evaporating a solvent from the deposited coating composition, and curing the coating composition. An article includes a substrate and a coating layer formed from the coating composition.

The invention provides a shell, a manufacturing method thereof and electronic equipment. The shell comprises a shell base material, an inner texture layer, a coating layer and an outer texture layer which are arranged in a stacked mode. The outer texture layer comprises a bonding layer, a connecting layer and a first texture layer which are stacked, and the bonding layer covers the coating layer; the bonding layer comprises the following raw material components in percentage by mass: 20-40% of polyester resin; 40%-70% of an oxygen-containing solvent; 6%-15% of an aromatic solvent; and 5%-10% of isocyanate. The inner texture layer, the coating layer and the outer texture layer are arranged in a stacked mode, so that the shell can provide light rays of different colors at different observation angles, and the shell has a good and rich colorful appearance effect. The outer texture layer and the coating layer can be tightly combined through the bonding layer, the bonding layer has good crosslinking density, the curing shrinkage stress of the first texture layer can be released in the slow curing process of the bonding layer, the internal stress of the outer texture layer is reduced, and the impact resistance of the shell is improved; and the probability that the outer texture layer cracks when the shell falls or is impacted is reduced.

The invention relates to the technical field of corrosion inhibitor preparation, in particular to a reaction kettle for corrosion inhibitor production. Comprising a support, the support is fixedly connected with a jacketed reaction kettle, the top of the jacketed reaction kettle is fixedly connected with a feeding pipe, the bottom of the jacketed reaction kettle is fixedly connected and communicated with a discharging pipe, the feeding pipe is fixedly connected and communicated with a bulk material barrel located in the jacketed reaction kettle, and the discharging pipe is fixedly connected and communicated with a discharging pipe located in the jacketed reaction kettle. The bulk material barrel is communicated with the jacketed reaction kettle, a screen plate is fixedly connected to the joint of the bulk material barrel and the jacketed reaction kettle, and the screen plate is used for dividing materials into thin strips. The high-viscosity oleic acid imidazoline is divided into thin strips through the screen plate, so that the dissolving surface area of the oleic acid imidazoline in the aromatic solvent oil is increased, and the preheated aromatic solvent oil is matched for synchronous stirring, so that the probability of caking, wall sticking and non-uniform dispersion caused by direct pouring of the oleic acid imidazoline is effectively reduced; therefore, the dissolution efficiency and the batch mixing uniformity are remarkably improved.

The invention belongs to the technical field of thermoplastic polyurethane elastomers, and particularly relates to a photoinduced deformation TPU material as well as a preparation method and application thereof. Comprising the following raw materials in parts by weight: 30-38 parts of diisocyanate; 5 to 10 parts of modified black phosphorus nanosheets; 40 to 50 parts of polycarbonate diol; 9 to 12 parts of a chain extender; 0.5 to 1 part of a catalyst; the preparation method of the modified black phosphorus nanosheet comprises the following steps: carrying out ice-water bath ultrasonic treatment on black phosphorus crystals and an amino compound in a polar aprotic solvent to obtain an amino-functionalized black phosphorus nanosheet; dispersing the amino-functionalized black phosphorus nanosheet into an aromatic solvent, and enabling the amino-functionalized black phosphorus nanosheet to react with diphenylmethane diisocyanate to obtain the modified black phosphorus nanosheet. The modified black phosphorus nanosheet is used as a photoresponse filler, and the prepared photoinduced deformation TPU material has excellent photoinduced deformation performance and good mechanical property and cycling stability.

The application relates to the technical field of lithium-sulfur batteries, and discloses application of a local high-concentration weak-solvent electrolyte in a lithium-sulfur battery. The local high-concentration weak-solvent electrolyte is composed of a lithium salt, tetrahydro-pyran and toluene, wherein the volume ratio of the toluene is 20-50%. The solvent in the electrolyte is an ether solvent which is a weak solvent, high electrochemical and thermal stability, weak polarity inhibits the dissolution of polysulfides, the concentration of the solvent is regulated, the proportion of free solvent is reduced, the solvent is difficult to coordinate with polysulfides, the solubility of the lithium-sulfur battery is reduced, the shuttling of polysulfides between the positive and negative electrodes is effectively inhibited, and the contact and reaction of polysulfides and the metal lithium negative electrode are hindered. Meanwhile, the aromatic solvent toluene is introduced to increase the electrochemical reaction kinetics of the sulfur positive electrode through the characteristics of slightly dissolving sulfur, and the cycle life of the battery is prolonged.