65 results about "Carboxylic acid halides" patented technology

The invention belongs to the technical field of rainwater treatment, and relates to a multifunctional bioretention pond for enhancing nitrogen and phosphorus removal, a water accumulation layer, a covering layer, a planting layer, a medium layer, a submerging layer and a drainage layer are sequentially distributed in the pond from top to bottom, the drainage layer is provided with a drainage pipe, and a water outlet of the drainage pipe is flush with the top of the submerging layer; the submerged layer contains modified wood chips and scrap iron which are filled in a layered manner, the modified wood chips are obtained by grafting reaction of wood chips through a functional copolymer, and the use amount of the functional copolymer is 6-10 wt% of the wood chips; the functional copolymer is obtained by carrying out a copolymerization reaction on a pyridyl-containing acrylic acid monomer and a double-bond-containing acyl halide monomer according to a molar ratio of 1: (0.1-0.3). Through wood chip modification and filling structure improvement, a submerged layer of the bioretention pond is filled with modified wood chips and scrap iron in a layered manner, so that the bioretention pond has the effect of enhancing nitrogen and phosphorus removal, and meanwhile, the removal effect on heavy metal pollutants is also greatly improved.

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.

A polyester copolymer, a method for preparing the polyester copolymer, an adhesive comprising the polyester copolymer, a skin patch comprising the adhesive, and a medical device comprising the adhesive are disclosed. The polyester copolymer comprises the following reaction products: a first diol and a second diol, wherein the first diol is an oligomer, polymer, or copolymer, and the second diol is a short-chain diol having 2 to 20 carbon atoms; a bifunctional compound comprising a dicarboxylic acid, a dicarboxylic acid halide, an anhydride, or a diester; and a third diol, wherein the third diol comprises a branched hydrocarbon group.

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.

This invention relates to a method for improving the dimensional stability of wood, comprising the following steps: S1, a double-bonded acyl halide compound, an acid-binding agent, and a catalyst are dissolved in an inert solvent to form a reaction solution, and the wood after anhydrous treatment is vacuum impregnated; after removing the residual liquid, a grafting reaction is carried out by heating to obtain grafted modified wood; S2, molten paraffin is mixed with an oleophilic surfactant to form an oil phase, and a hydrophilic surfactant, silica sol, and polyethylene glycol diacrylate are dissolved in water to form an aqueous phase. The oil phase is added dropwise to the aqueous phase at a temperature higher than the melting point of paraffin to emulsify, obtaining an oil-in-water emulsion; S3, the grafted modified wood is vacuum impregnated in the emulsion and an initiator to obtain impregnated wood; S4, the impregnated wood is subjected to heat treatment. The method of this invention treats scabbard woods such as wenge, ipe, or windmill wood, exhibiting good dimensional stability, with a warpage of 4%~5%, a twist of 2%~4%, a fork deformation of <0.3%, and no obvious discoloration.

This invention provides a method for manufacturing a fluoropolymer with minimal deviation in weight-average molecular weight per batch. The method for manufacturing the fluoropolymer of this invention is characterized by comprising the following steps: a fluoropolymer synthesis step, wherein a diol represented by formula (3) is reacted with at least one selected from unsaturated carboxylic acids, esters of the unsaturated carboxylic acids, acyl halides of the unsaturated carboxylic acids, and anhydrides of the unsaturated carboxylic acids to obtain a composition comprising a fluoropolymer represented by formula (4) as the main reactant and a fluoropolymer represented by formula (5) as a by-reactant; a fluoropolymer purification step, wherein the fluoropolymer represented by formula (5) is removed from the composition, and the content of the fluoropolymer represented by formula (5) is 1500 ppm or less, expressed as a mass fraction (parts per million) based on the fluoropolymer represented by formula (4); and a polymerization step, wherein the composition after the fluoropolymer purification step is subjected to a polymerization reaction to produce a fluoropolymer comprising a repeating unit represented by formula (1) and a repeating unit represented by formula (2). In equations (1), (2), (3), (4), and (5), R 1 R 2 Each of the following is independently a hydrogen atom, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, or tert-butyl, R 3 R 4 Each is independently a hydrogen atom, methyl or ethyl, R 5 R is a hydrogen atom or a trifluoromethyl group. 6 It can be a hydrogen atom, a chlorine atom, a methyl group, or a trifluoromethyl group.

The invention belongs to the technical field of olefin polymerization, and discloses a catalyst component for olefin polymerization reaction and a preparation method, a catalyst and application thereof, the method comprises the following steps: (1) reacting a magnesium-containing compound, an organic epoxy compound and an organic phosphorus compound to obtain a magnesium-containing reaction solution; (2) reacting the magnesium-containing reaction liquid with an acyl halide compound; reacting with a first alcohol compound at-55 to 20 DEG C, and 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; optionally, the method also comprises the following steps: (3) reacting the catalyst component obtained in the step (2) with a second titanium-containing compound to obtain the catalyst component, optionally, a second electron donor compound is added before and / or after the reaction with the second titanium-containing compound, and the reaction is carried out. The polymer powder obtained by adopting the catalyst provided by the invention has obviously improved bulk density.

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 discloses a positive photosensitive polybenzoxazole resin composition, a preparation method and an application thereof. The composition comprises the following components in parts by weight: 100 parts by weight of an aromatic silicon-containing polybenzoxazole precursor polymer, 1-50 parts by weight of a photosensitizer, 80-800 parts by weight of a solvent and an additive. The positive photosensitive polybenzoxazole resin composition is applied through coating, pre-baking, exposure, development and thermal curing. The aromatic silicon-containing polybenzoxazole precursor polymer is obtained by polycondensing an aromatic silicon-containing diacid and an acyl halide thereof with a hydroxyl-containing diamine by a known method. The introduction of the aromatic silicon-containing structure can improve the flexibility of the polymer molecular chain and reduce the rigidity. The silicon-oxygen structure has good affinity for substrates such as silicon, glass and ITO, thereby improving the bonding performance between the polybenzoxazole film and the substrate, enabling the polybenzoxazole film to withstand the high temperature of the thermal cyclization process and complex operating environments.

The application provides a kind of parent modification silane coupling agent, preparation method and application, belong to material chemistry field.The application provides a kind of preparation method of parent modification silane coupling agent, comprising the following steps: in the presence of acid binding agent, first solvent, hydroxyl-containing hydrophilic polymer is reacted with halogenated acyl halide to obtain ATRP initiator;In the presence of metal salt catalyst, ligand and second solvent, ATRP initiator is reacted with acrylate monomer, to obtain active macromolecule containing double parent group;In the presence of base reagent and third solvent, active macromolecule containing double parent group is reacted with silane compound containing amino, to obtain parent modification silane coupling agent.The silane coupling agent provided by the application can be effectively applied in paint, not only can improve the interface performance between inorganic surface and organic paint, but also can effectively improve the tensile strength of coating, waterproof and stain resistance and the tensile strength after recoating.

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 application provides a purification method for urea water mixture synthesized by a stripping method, and a preparation method of a reverse osmosis membrane used in the method is as follows: preparing an aqueous phase containing a polyamine compound and a molecular sieve powder with a specific content, preparing an organic phase containing a multifunctional acyl halide compound and graphene with a specific content, and adding a flux enhancer with a specific content into the aqueous phase and the organic phase respectively; applying the aqueous phase to the surface of a porous support membrane to obtain a coated support membrane; applying the organic phase to the coated support membrane, and performing interfacial polymerization of the polyamine compound and the multifunctional acyl halide compound to form a distinguishing layer of a reverse osmosis membrane, wherein the reverse osmosis membrane comprises the porous support membrane and the distinguishing layer; and the flux enhancer comprises a metal chelate containing a bidentate ligand and a metal ion, and a dialkyl sulfoxide. The reverse osmosis membrane has excellent biuret rejection effect, and can further reduce the biuret content in the urea water mixture.

The present invention belongs to the field of surfactants and uses thereof, and specifically relates to a gemini surfactant, a preparation method therefor, and a use thereof. The surfactant is prepared by means of reacting a fatty acyl halide with L-cysteine in a mixed system of water and an organic solvent, resulting in a gemini surfactant containing multiple amide groups and carboxyl groups. The gemini surfactant of the present invention has relatively high surface activity and relatively low critical micelle concentration. It is used in the preparation of washing and care, skincare, and fabric care products, and can exhibit excellent emulsification stability, dispersion stability and rapid penetration for hair, skin and fabrics. Its unique gemini cysteine structure can participate in the structural repair of hair, skin and fabrics on surfaces and in interiors thereof, with low irritation. It has excellent efficacy for repairing skin, hair and fabric, especially for hair damaged by perming or dyeing, including the cuticle, scales, cortex and medulla.

The present disclosure is generally directed to antimicrobial polymers, and methods of preparation thereof. In embodiments, an antimicrobial polymer may comprise a polymeric moiety, an aromatic moiety comprising a naphthoic acid derivative bonded to the polymeric moiety, a pendant group comprising a cation and a linking group bonded to the pendant group and aromatic moiety. Methods of preparation include reacting naphthoic acid or a derivative thereof with a polymer to form a primary intermediate, reacting an alcohol group on the primary intermediate with an acyl halide to form a secondary intermediate, reacting a terminal halide on the acyl halide to form a cationic group on the secondary intermediate.

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 invention discloses a phytic acid hyperbranched copolymer and a preparation method and application thereof.The preparation method of the phytic acid hyperbranched copolymer comprises the following steps that S1, phytic acid and a sulfhydryl compound are mixed and subjected to a condensation reaction, and sulfhydrylated phytic acid is prepared; s2, mixing the thiolated phytic acid with an acyl halide compound containing a carbon-carbon double bond, and carrying out nucleophilic substitution reaction to prepare a thioester bond phytic acid derivative; s3, mixing the thioester bond phytic acid derivative with glycidyl ether, and carrying out esterification reaction to prepare a phytic acid hyperbranched copolymer; the sulfhydryl compound in the step S1 contains sulfhydryl, amino and carboxyl; the molecules of the glycidyl ether in the step S3 contain at least two epoxy groups. The coating formed by the phytic acid hyperbranched copolymer prepared by the preparation method disclosed by the invention has good photodegradation capability, can effectively improve the recovery efficiency, and has good tensile property. In addition, a coating formed by the phytic acid hyperbranched copolymer has good flame retardant property.

The present invention belongs to the technical field of biodegradable materials, and relates to a PBAT / bamboo powder biodegradable composite masterbatch, its preparation method and composite film. The composite masterbatch comprises the following raw materials in parts by mass: 100 parts of PBAT, 10 - 30 parts of modified bamboo powder, 5 - 10 parts of compatibilizing grafting agent, 0.5 - 1 part of retarder, 20 - 30 parts of barrier agent, and 0.2 - 0.4 part of chain extender; the modified bamboo powder is obtained by impregnating bamboo powder with an inorganic alkali solution and modifying it with an acyl halide reagent; the compatibilizing grafting agent is obtained by subjecting PBAT to ultraviolet grafting modification with a grafting agent, and the grafting agent is a compound of a carboxyl-containing acrylate and glycidyl unsaturated fatty acid ester in a mass ratio of 1:(1 - 2). The present invention modifies bamboo powder and introduces a novel compatibilizing grafting agent, improving the hydrophobicity, dispersibility and compatibility with PBAT of bamboo powder. The obtained composite film has good appearance, high water and oxygen barrier properties and good mechanical properties.

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 present disclosure addresses the problem of providing an active ester compound production method that makes it possible to produce an active ester compound in which halogen ion content is reduced. Provided as a solution is an active ester compound production method wherein: a polyvalent carboxylic acid halide, a polyvalent phenolic hydroxyl group-containing compound, and an aromatic monohydroxy compound are reacted in the presence of a basic catalyst; and the amount of the basic catalyst is greater than 1.00 mole per 1 mole of the total of hydroxyl groups in the polyvalent phenolic hydroxyl group-containing compound and the aromatic monohydroxy compound.

It is an object of the present invention to provide a removable tattoo ink for tattoos that is functionalized carbon black, where said functionalized carbon black is oxidized carbon black in which at least a fraction of the alcohol (-OH) groups are esterified with azide-substituted acyl halides, a method for obtaining it and methods for removing it from the skin.

The invention relates to a preparation method of perfluoroalkyl, which comprises the following steps: by taking Rf-COX, Rf-COOH or Rf-COOR1 as raw materials, reacting with fluorine gas to obtain the product perfluoroalkyl, and taking Rf-COX, Rf-COOH or Rf-COOR1 as the raw materials, and taking Rf-COX, Rf-COOH or Rf-COOR1 as the raw materials, according to the method, perfluoroalkyl acyl halide (acid or ester) directly reacts with fluorine gas, complex multi-step reaction and separation and purification of intermediate products are not needed, the technological process and production links are simplified, and the production efficiency is improved; the method has the advantages of low price of raw materials, mild reaction conditions, low requirements on equipment, realization of continuous production, and reduction of the equipment investment and the production cost; the method is carried out under an anhydrous condition, does not need to use any organic solvent, and is green and environment-friendly; by controlling the reaction conditions, the yield of the perfluoroalkane can reach 89.7%, the purity of the perfluoroalkane can reach 99.9%, the requirements of different fields for high-purity products can be met, and the method has a good industrial application prospect.

The application discloses a photoinitiator and a preparation method thereof, an ultraviolet light curing resin, and an ultraviolet light curing inner lining hose. o The preparation method of the photoinitiator comprises the following steps: dissolving white solid product C in triethylamine dichloromethane to obtain a C solution, dissolving TPO-L acyl halide in an organic solvent to obtain a TPO-L acyl halide solution, adding the TPO-L acyl halide solution into the C solution drop by drop when the temperature of the C solution is 0 o stirring for 20-28 hours at room temperature, quenching the reaction, separating an organic phase, extracting a water phase, washing, filtering and purifying combined organic phases, and obtaining a trifunctional photoinitiator. The photoinitiator synthesized in the application contains four active groups, has high activity, improves the transfer efficiency of free radicals, is suitable for the curing of thick film products, has low migration and volatility, has low odor and toxicity, has good solubility in various resin monomers and diluents, and is especially suitable for the curing of ultraviolet light curing inner lining hoses.

The invention provides an electrophotographic photoreceptor, a process cartridge, and an image forming apparatus. The electrophotographic photoreceptor includes: a conductive substrate; and a photosensitive layer disposed on the conductive substrate, in which an outermost layer contains a charge transport material, a polyarylate resin, and a silicone oil, the content of the silicone oil relative to the outermost layer is 0.001 ppm or more and 15000.000ppm or less, and the amount of residual aromatic carboxylic acid halide per unit mass of the outermost layer is 15 * 10-8 mol / g or less.

To provide a compound having a dibenzo[g,p]chrysene skeleton and a method for producing the same, the compound including oxygen atom-containing functional groups directly linked to aromatic rings via oxygen atoms at the 2- and 7-positions, and having no substituents at the 10- and 15-positions.SOLUTION: The present disclosure relates to a compound having a dibenzo[g,p]chrysene skeleton, the compound having oxygen atom-containing functional groups directly bonded to aromatic rings via oxygen atoms at positions 2 and 7, and having no substituents at positions 10 and 15. The disclosure also relates to a method for producing the compound having a dibenzo[g,p]chrysene skeleton, including: (a) an acylation step of reacting a compound having a dibenzo[g,p]chrysene skeleton with no substituents at the 2-, 7-, 10, and 15-positions with an acyl halide compound to obtain a diketone compound; (b) an esterification step of oxidizing the obtained diketone compound with an oxidizing agent to obtain a diester compound; and (c) a hydrolysis step of hydrolyzing the obtained diester compound.SELECTED DRAWING: None