28 results about "Acyl halide" patented technology

This invention belongs to the field of rainwater treatment technology and relates to a multifunctional bioretention tank for enhanced nitrogen and phosphorus removal. The tank comprises, from top to bottom, a water accumulation layer, a covering layer, a planting layer, a media layer, a submerged layer, and a drainage layer. The drainage layer is equipped with a drainage pipe, the outlet of which is flush with the top of the submerged layer. The submerged layer contains layered modified wood chips and iron filings. The modified wood chips are obtained by grafting functional copolymers onto the wood chips, with the amount of the functional copolymers being 6-10 wt% of the wood chips. The functional copolymers are obtained through copolymerization of pyridine-containing acrylic monomers and double-bonded acyl halide monomers at a molar ratio of 1:(0.1-0.3). This invention, through wood chip modification and improved filling structure, layers modified wood chips and iron filings in the submerged layer of the bioretention tank, thereby enhancing the nitrogen and phosphorus removal effect and significantly improving the removal efficiency of heavy metal pollutants.

This invention provides a method for preparing 2-alkylthiobenzo[b]thiophene sulfone compounds. Using acylsulfonylmethylthio ylide compounds as raw materials, cyclization in the presence of an acid anhydride or acyl halide is induced to achieve the preparation of 2-alkylthiobenzo[b]thiophene sulfone compounds. This preparation method uses readily available and simple raw materials and is easy to operate. The obtained compounds can be applied to important organic materials, such as luminescent materials, antibacterial and anticancer drugs, and pesticides. They can also be used as intermediates in the synthesis of organic materials and drugs, and for the preparation of various materials and drugs.

Provided in the present disclosure are a gas, a gas combination for plasma etching, an etching method and semiconductor equipment, belonging to the field of plasma etching. In the etching process, one or more of a carbonyl halide, an acyl halide and a carboxylic acid halide are provided as process gases and are excited to form a plasma to etch a layer to be etched, so that the problem of inconsistency between the top and the bottom caused by the fact that the etching rate of the bottom is quite different from the etching rate of the middle part when etching is performed to a certain extent to form a high-aspect-ratio hole or groove is solved, the morphology of high-aspect-ratio etching is significantly improved, the collimation is ensured, and the effectiveness of the semiconductor structure is improved.

This invention provides a method for preparing a modified SAM-perovskite interface and its application, as well as a method for preparing perovskite solar cells, relating to the field of perovskite solar cells. The method for preparing the SAM-perovskite interface includes: preparing a SAM solution using ethanol as a solvent, coating the SAM solution onto the surface of a TCO substrate, and obtaining a SAM-TCO substrate after annealing; preparing an acyl halide compound solution using chloroform as a solvent and coating it onto the surface of the SAM-TCO substrate to form an interface control layer, thereby obtaining a modified SAM-TCO interface; and preparing a perovskite solution using DMSO / DMF as a solvent and coating the perovskite solution onto the modified SAM-TCO interface to obtain a modified SAM-perovskite interface. This invention simultaneously achieves the chemical purification of the perovskite active layer and the strengthening of the SAM molecular anchoring structure, significantly improving device efficiency and greatly enhancing long-term stability.

This invention discloses a method for preparing hyperbranched polyphenylene sulfide-modified nanomaterials. By modifying the ends of mesoporous nanomaterials with amino groups, and reacting the amino groups with acyl halides at low temperature, terminal halogen-modified mesoporous nanomaterials are obtained. Then, polyphenylene sulfide is grown on the surface of the mesoporous nanomaterials through an electrophilic substitution reaction. The resulting nanomaterials are in-situ polymerized with oligophenylene sulfide resin, which greatly enhances the compatibility between the nanomaterials and polyphenylene sulfide resin, while improving the corrosion resistance of thermoplastic resins and extending the service life of thermoplastic resin coatings in geothermal environments.

The invention belongs to the technical field of olefin polymerization, and discloses a catalyst component for olefin polymerization reaction, a preparation method of the catalyst component, a catalyst and application of the catalyst component. A mode I comprises the following steps: (1) reacting a magnesium-containing compound, an aluminum-containing substance, an organic epoxy compound and an organic phosphorus compound to obtain a magnesium-containing reaction solution; the aluminum-containing substance is metal aluminum and / or aluminum trihalide; (2) reacting the magnesium-containing reaction liquid with an acyl halide compound; reacting with a first titanium-containing compound to obtain a catalyst component; optionally adding a first electron donor compound before and / or after the reaction with the first titanium-containing compound, and reacting; and (3) reacting the catalyst component obtained in the step (2) with a second titanium-containing compound to obtain the catalyst component, and optionally adding a second electron donor compound before and / or after the reaction with the second titanium-containing compound, and reacting. The polymer powder obtained by adopting the catalyst provided by the invention has obviously improved bulk density.

The present invention relates to a method for producing a precursor that can be easily prepared, has high versatility in design, and can be used in a monomer for a highly transparent medical device, in particular a contact lens. The present invention provides a method for producing a monomer precursor composition, comprising a mixing step, the mixing step is a step for mixing a compound A having a specific structure (a), an unsaturated carboxylic acid B having a specific structure (b), an unsaturated carboxylic acid metal salt C, and an unsaturated carboxylic acid D having a substituent selected from the group consisting of a haloalkyl group, an isocyanate group, a carboxyl group, an epoxy group, an acid anhydride group, and an acyl halide group.

This invention relates to the field of agricultural chemicals, particularly to the insecticide indoxacarb, and specifically to a method for preparing the synthetic intermediate of indoxacarb. The method involves constructing an α,β-unsaturated carbonyl compound using the Knoevenagel reaction, followed by further reduction to obtain the target compound. Compared to the nucleophilic substitution reaction conditions in the original literature, this method offers milder conditions and greater solvent selectivity, making it suitable for large-scale industrial production of acyl halide derivatives. This method is not only simple and efficient, but also boasts high yield and high purity, allowing the target compound to be obtained through simple purification steps.

The invention provides a temperature response type hyperbranched flow pattern regulator, a preparation method of the temperature response type hyperbranched flow pattern regulator and a drilling fluid. The raw material system comprises hyperbranched polyester, a long-chain alkane acyl halide material with the carbon atom number larger than or equal to 8, a temperature response type high-molecular polymer and a polyisobutene material. The temperature response type hyperbranched flow pattern regulator provided by the invention keeps low viscosity at low temperature (less than or equal to 120 DEG C) and high shear, provides good pumpability, and effectively reduces equivalent cycle density and pressure consumption; high viscosity is maintained under high temperature (gt: 220 DEG C) and high shear, a weighting agent and drilling cuttings are effectively suspended, the risk of tool sticking due to sedimentation is reduced, and good borehole cleaning efficiency is maintained; the defects of high-temperature failure, poor rheology controllability, out-of-control high-temperature rheology, intensified filter loss and the like in the prior art are overcome; meanwhile, the ecological toxicity of sulfonated asphalt is avoided, and a key technical support is provided for safe and efficient drilling of deep unconventional oil and gas resources.

The invention discloses a dry conductive agent for a solid-state battery and a preparation method of the dry conductive agent, and belongs to the technical field of batteries. The dry conductive agent for the solid-state battery comprises the following raw material components: carbon nanotubes, acyl halide conductive carbon black, graphene, functionalized lithium carboxymethyl cellulose and functionalized styrene-butadiene rubber. The functionalized lithium carboxymethyl cellulose is obtained by compounding lithium carboxymethyl cellulose, 3-dimethylaminopropylamine and 3-aminopyrrole; the functionalized styrene butadiene rubber is obtained by copolymerizing and grafting lithium p-styrenesulfonate and 3-butene-1, 2-diol and then reacting with 3, 4-dibromothiophene; the dry conductive agent for the solid-state battery is prepared by the following steps: firstly, mixing carbon nanotubes, acyl halogenated conductive carbon black and graphene to obtain a mixture I; then mixing the functionalized lithium carboxymethyl cellulose and the functionalized styrene-butadiene rubber, and carrying out electrochemical treatment to obtain a mixture II; and finally, uniformly mixing the mixture I and the mixture II, sanding, homogenizing, drying and crushing to obtain the dry conductive agent for the solid-state battery.

The invention relates to the technical field of water treatment membranes, in particular to a nanofiltration membrane and a preparation method thereof. The invention provides a nanofiltration membrane. The nanofiltration membrane comprises a non-woven fabric layer, a supporting layer and a polyester separation layer which are sequentially compounded, the polyester separation layer is formed by carrying out interfacial polymerization reaction on a water phase solution and an oil phase solution on the supporting layer; the water phase solution comprises saturated alkyl substituted resorcinol; the oil phase solution comprises a polybasic acyl halide monomer; the saturated alkyl-substituted resorcinol has a structure as shown in a formula I; in the formula I, R is saturated alkyl. The nanofiltration membrane provided by the invention has excellent chlorine oxidation resistance and acid resistance.

The application relates to a preparation method of a high-flow reverse osmosis composite membrane based on a finger-shaped structure base membrane and an alginate nanotube separation layer, which comprises the following steps: S1, preparation of a casting solution: the casting solution comprises 15-18 wt% of solid polysulfone, 75-82 wt% of N, N-dimethylformamide and 0.5-9 wt% of a pore former, the above raw materials are uniformly mixed and placed, defoaming and filtration are carried out to obtain the casting solution; S2, uniformly spraying the casting solution on a base membrane and placing, placing the film in a water coagulation liquid to obtain a finger-shaped porous support polysulfone base membrane; S3, coating a binary amine aqueous solution on the finger-shaped porous support polysulfone base membrane obtained in the step S2 and drying; and S4, coating a multi-component acyl halide oil phase solution on the finger-shaped porous support polysulfone base membrane in the step S3 to prepare a composite membrane. The reverse osmosis composite membrane in the application can long-term improve and maintain water flux under the condition of ensuring a relatively optimal desalination rate, so as to improve membrane separation efficiency and reduce operation cost.

Methods of forming porous media (e.g., membranes or portions thereof for liquid separation) via polymerization and related articles are generally described. In some cases, the two components are combined such that a polymerization (e.g., interfacial polymerization) reaction occurs, resulting in the formation of a polymer layer (e.g., an active layer). In some cases, the two components include a first solution comprising water and a relatively low concentration of a first monomer (e.g., an amine-containing monomer, e.g., an optionally substituted metaphenylene diamine) and a second solution comprising a non-polar organic liquid and a relatively low concentration of a second monomer (e.g., an acyl halide-containing monomer, e.g., an optionally substituted trimesoyl chloride).

The purpose of the present invention is to provide a method for safely producing an acyl halide at low cost and with a low environmental burden. This method for producing an acid halide is characterized by comprising a step for irradiating a mixed gas containing methane, an elemental halogen gas, and oxygen with light.

The present invention relates to a method for producing PVC, and in particular provides a method for producing PVC by polymerization of vinyl chloride, comprising the steps of: (a) reacting an acyl halide with a peroxide in a reactor to form a diacyl peroxide; (b) reacting an alkyl haloformate with the peroxide in the same reactor to form a dialkyl peroxydicarbonate without removing the diacyl peroxide formed in step (a), thereby producing a mixture comprising the diacyl peroxide and the dialkyl peroxydicarbonate; and (c) using the mixture comprising the diacyl peroxide and the dialkyl peroxydicarbonate as an initiator mixture for the polymerization of vinyl chloride.

Provided are an active ester resin, a resin composition, a cured product and use thereof, and a phenolic hydroxyl group-containing resin. The present invention addresses the problem of providing: an active ester resin having a high relative dielectric constant and a low dielectric loss tangent in a cured product; a resin composition containing the active ester resin; a cured product obtained by curing the resin composition; and a high-frequency device. An active ester resin obtained by reacting a phenolic hydroxyl group-containing resin (A) in which a phenolic hydroxyl group-containing compound (a1) and a maleimide group-containing compound (a2) are used as essential reaction raw materials, and an aromatic (polyvalent) carboxylic acid or an acyl halide thereof (B) are used. Further, a resin composition containing the active ester resin and a cured product obtained by curing the resin composition are used.

The invention relates to the technical field of water treatment membrane separation, and particularly discloses a pollution-resistant monovalent and divalent ion separation nanofiltration membrane as well as preparation and application thereof. The pollution-resistant monovalent and divalent ion separation nanofiltration membrane comprises a supporting layer, a charged middle layer and a charged separation layer which are sequentially stacked, the material of the charge middle layer comprises polydopamine and / or polyethyleneimine; the charge separation layer is prepared by interfacial polymerization of raw materials including an oil-phase reactant and a water-phase reactant; the oil-phase reactant comprises a compound containing an acyl halide functional group; inorganic nanoparticles are also added into preparation raw materials of the charge separation layer, and the inorganic nanoparticles are prepared from the following components in parts by weight: a graphene oxide two-dimensional lamellar material, a mesoporous silica porous material and a titanium dioxide metal oxide. The pollution resistance of the nanofiltration membrane can be further improved, so that the pollution-resistant monovalent and divalent ion separation nanofiltration membrane with a more excellent and stable monovalent and divalent salt ion separation effect is obtained.

This invention relates to the field of maleic anhydride production technology, specifically to a method for improving the stability of maleic anhydride. The method includes adding a stabilizer to the maleic anhydride, comprising organotin / organoantimony compounds, organotin compounds and / or organoantimony compounds, acyl halides, metal oxides, antioxidants, and polymerization inhibitors; the stabilizer comprises: 105-5050 parts by weight of organotin / organoantimony compounds, 10-5080 parts by weight of acyl halides, 105-5030 parts by weight of metal oxides, 10-50 parts by weight of antioxidants, and 105-5040 parts by weight of polymerization inhibitors. After adding the stabilizer, the color number of maleic anhydride stabilizes within 25 after being kept at 140℃ for 2 hours, which meets the requirements of GB / T 3676-2020. At the same time, the color number of maleic anhydride after being stored at 60℃ for 90 days is within 35. The color numbers of maleic anhydride all meet the requirements of GB / T 3676-2020, which can meet the needs of producing high-quality maleic anhydride products and is suitable for the industrial production of maleic anhydride products.

This invention relates to the field of curing agent synthesis technology and provides a method for synthesizing an active ester curing agent, comprising the following steps: Step 1, mixing and dissolving a phenolic hydroxyl-containing resin and an acylating agent in a solvent, heating and controlling the reaction temperature to obtain mixture one; Step 2, adding a catalyst solution dropwise to mixture one while stirring to obtain mixture two; Step 3, separating the mixture, washing with water, and removing the solvent to obtain the active ester curing agent; wherein the acylating agent is one of an acyl halide, an anhydride, or a carboxylic acid; and the hydroxyl conversion rate is 60-95%. Therefore, this invention synthesizes an active ester curing agent by controlling the hydroxyl conversion rate and applies it to low-dielectric copper-clad laminates, exhibiting both high adhesion strength and low dielectric properties.

The application discloses a preparation method of a ferrospinel floatation collector and application thereof, and belongs to the technical field of floatation collectors. First, ammonium halide is poured into water, and after being dissolved, nitrobenzene organic matter and a catalyst are added, and sufficient stirring is conducted to obtain a mixed solution A; an acyl halide compound, sodium carbonate and an organic solvent are sequentially added into the mixed solution A, and sufficient stirring is conducted, and reaction is carried out at a temperature of-20-20 DEG C to obtain the ferrospinel floatation collector. The preparation method of the ferrospinel floatation collector and application thereof have the advantages that the ferrospinel collector prepared by the application has good selective collecting effect on ferrospinel, can significantly reduce the content of pyrite and pyrrhotite in zinc concentrate, and improves the quality of the zinc concentrate.

This invention discloses a high-yield method for preparing hydroxamic acid, relating to the field of organic synthesis technology. The specific steps are as follows: Hydroxylamine hydrochloride is dissolved in water and cooled; liquid alkali is added dropwise to generate free hydroxylamine; a carboxylic acid ester is added, and the pH is adjusted to 8–10, reacting until the ester residue is ≤2%; a small amount of the corresponding acyl halide is added, and the pH is maintained to continue the reaction until complete; acidification and crystallization yield high-purity hydroxamic acid. This invention uses carboxylic acid ester as the main raw material and a small amount of acyl halide as a synergist, employing a staged reaction to overcome the later-stage kinetic bottleneck, significantly reducing ammonia nitrogen in wastewater. The process is mild, low-cost, and easily industrialized, suitable for the preparation of high-purity products such as benzoyl hydroxamic acid, salicylic acid, and octanoyl hydroxamic acid.

The invention discloses a chiral separation composite membrane as well as a preparation method and application thereof, and belongs to the technical field of membrane separation. In order to solve the technical problems of low enantioselectivity and poor stability of the existing chiral membrane, the invention provides a composite membrane prepared by a surfactant-assisted interfacial polymerization technology. The membrane comprises a porous supporting substrate and a chiral polyamide separation layer arranged on the porous supporting substrate. The key point of the preparation method is that an aqueous phase solution containing a short-chain chiral amine monomer and a surfactant and an organic phase solution containing multifunctional acyl halide are subjected to interfacial polymerization. The introduction of the surfactant reduces the interfacial tension and regulates and controls the diffusion kinetics of the chiral monomer, thereby forming a sub-nano separation channel with more uniform structure, higher chiral site density and highly matched pore size with the target molecule size. The prepared composite membrane shows up to 99% of enantioselectivity to chiral enantiomers such as D / L-tryptophan, and has high flux and excellent cycle stability.

Methods and related systems for forming an EUV-sensitive layer. The methods comprise executing a plurality of deposition cycles. A deposition cycle comprises a first precursor pulse and a second precursor pulse. The first precursor pulse comprises exposing the substrate to a first precursor. The first precursor comprises two or more acyl halide functional groups. The second precursor pulse comprises exposing the substrate to a second precursor. In some embodiments, the second precursor comprises two or more hydroxyl functional groups.

The invention discloses a method for anhydrous production of thiocarboxylate silane by using industrial tail gas hydrogen sulfide, which comprises the following steps: 1) introducing the industrial tail gas hydrogen sulfide into an alcohol-alkali solution for reaction to obtain an alcohol solution of alkali sulfide; 2) adding acyl halide into the alcoholic solution of the alkali sulfide for reaction to obtain an alcoholic solution of thiocarboxylic acid alkali; 3) adding haloalkyl silane into the alcohol solution of the thiocarboxylic acid alkali for reaction to obtain a mixed solution of thiocarboxylic ester silane and salt; and desalting and dealcoholizing to obtain the target product thiocarboxylate silane. According to the method, the target product thiocarboxylate silane can be obtained with high yield under the condition that a phase transfer catalyst is not added.

This invention discloses an N-aryl(2-acylaminobenzoyl)aminoamide compound, its preparation method, and its uses. This compound is generated by reacting Boc-amino acids and aromatic amines in dichloromethane under the action of EDCI, DMAP, and triethylamine. The N-Boc-aminobenzoyl compound is then acid-hydrolyzed with trifluoroacetic acid to obtain an aminobenzoyl compound. Next, the aminobenzoyl compound is reacted with indomethacin anhydride in acetonitrile under the action of potassium carbonate to generate a diamide compound. Finally, the diamide compound is reacted with an acyl halide in the action of triethylamine to obtain the N-aryl(2-acylaminobenzoyl)aminoamide compound. The raw materials used in the synthesis are inexpensive and readily available, and the synthesis method is simple. This compound exhibits good inhibitory activity against crop pathogens, particularly against Sclerotinia sclerotinia, Phytophthora blight, Fusarium head blight, rice blast fungus, gray mold, sheath blight, and rot fungus.

The invention discloses a polyamide reverse osmosis membrane based on quaternary ammonium salt chitosan modification and a preparation method and application thereof in seawater desalination, the preparation method comprises the following steps: step 1, sequentially coating a polysulfone support layer with a water phase solution and an oil phase solution, airing, and carrying out a water bath reaction at 50-80 DEG C for 3-30 min to form a polyamide ultrathin separation layer, the nascent state aromatic polyamide reverse osmosis membrane is obtained; the water phase solution is a m-phenylenediamine water solution with the mass fraction of 0.3-1%, and the pH value of the water phase solution is 7-9; the mass fraction of the multifunctional acyl halide in the oil-phase solution is 0.05-0.5%, and the balance is the oil-phase solvent; and 2, activating the nascent-state aromatic polyamide reverse osmosis membrane, coating the membrane surface with the membrane covering solution, drying in the air, carrying out water bath reaction at 50-80 DEG C for 3-30 minutes, and drying in the air to form a coating surface layer, thereby obtaining the target product. The method has the beneficial effects that high flux and high desalination rate can be kept, the service life of the membrane is remarkably prolonged, and the method can be used for seawater desalination and high-salinity wastewater treatment.

This invention provides a method for synthesizing polyaromatic ketone compounds. Belonging to the field of polymer material preparation technology, the method includes the following steps: using a high-boiling-point organic Lewis base as a solvent, and under Lewis acid catalyst conditions, polymerizing monomers undergo a Friedel-Crafts acylation reaction at a reaction temperature of 100-350°C to obtain the polyaromatic ketone compound. The polymerizing monomers are: a) an aromatic diacyl halide compound and an aromatic compound containing two active hydrogen atoms; and / or, b) an aromatic compound with an acyl halide at one end and an active hydrogen atom at the other end. The preparation method of this invention can obtain high molecular weight polyaromatic ketone compounds.

The application discloses a citronellol-based antibacterial polymer and a preparation method and application thereof. First, a citronellol-based initiator is synthesized through esterification reaction of citronellol and an acyl halide, and then DMAEMA and HEMA are polymerized through ATRP to obtain the citronellol-based antibacterial polymer; and then the citronellol-based antibacterial polymer is connected to cotton through a covalent bond by using diisocyanate to obtain a washing-resistant antibacterial cotton fabric, which has greater application value in the field of medical cotton fabrics. The citronellol-based antibacterial polymer prepared by modifying citronellol and combining with the polymer has obviously enhanced antibacterial effect and is firmly grafted to the cotton, and is expected to be used in industrial production.