51 results about "Aminophenazone" patented technology

The present invention discloses a class of nitrogen heterocycle-substituted hexa-dentate aminophenoxy rare earth complexes (I), a preparation method thereof, and an application thereof in the highly active catalytic ring-opening polymerization of lactones. The preparation method comprises the following steps: reacting a neutral ligand with a metal raw material compound in an organic medium, then adding an alcohol for reaction, and obtaining the target compound through filtration, concentration, and recrystallization. The nitrogen heterocycle-substituted hexa-dentate aminophenoxy rare earth complex of the present invention is a highly efficient catalyst for the ring-opening polymerization of lactones, and can be used for catalyzing the polymerization reaction of lactones such as lactide, and catalyzing the one-pot copolymerization of lactide and ε-caprolactone to obtain a multi-block copolymer. The nitrogen heterocycle-substituted hexa-dentate aminophenoxy rare earth complex of the present invention has good tolerance to impurities, has very high catalytic activity, and can obtain high molecular weight polyester materials. A has a structure shown in formula (II), (III), (IV) or (V); B has a structure shown in formula (VI) or (VII).

The present invention relates to a liquid pharmaceutical composition suitable for administration by inhalation comprising: (i) a suspension of particles comprising 9,10-dimethoxy-2-(2,4,6-trimethylphenylimino)-3-(N-carbamoyl-2-aminoethyl)-3,4,6,7-tetrahydro-2H-pyrimido[6,1-a]isoquinolin-4-one (RPL554); and (ii) a diluent which is 1,1,1,2-tetrafluoroethane (HFA-134a), wherein the liquid pharmaceutical composition is substantially free of surfactant. The invention also relates to a pressurised metered dose inhaler comprising the liquid pharmaceutical composition.

The invention relates to the technical field of enzyme-linked immunosorbent assay, and discloses a quality control serum diluent as well as a preparation method and application thereof, and the quality control serum diluent is prepared from the following raw materials: boric acid, borax, sodium caseinate, liquid gelatin, aminopyrine, an osmotic pressure stabilizer and bovine serum. The quality control serum diluent prepared by adopting the formula has no potential interfering substances (such as formaldehyde and thiomersalate), has excellent thermal stability and long-term stability, is applied to quality control serum dilution, is beneficial to improving the detection accuracy, ensures that the characteristics of the diluent meet the requirements when the diluent is used every time, and provides stable reference data for the detection process.

The invention discloses a preparation method of a carbon packaged porous hard carbon / Si composite negative electrode material, and belongs to the technical field of new energy materials. The carbon nanospheres, hexadecyl trimethyl ammonium bromide, ammonia water, m-aminophenol and formaldehyde jointly act on the porous hard carbon / Si composite material, volume expansion of a silicon-based material can be effectively relieved, the transmission distance of lithium ions is shortened, and the cycling stability of an electrode plate is improved. By using the carbon-packaged porous hard carbon / Si composite negative electrode material disclosed by the invention, the cycling stability of a lithium ion battery is remarkably improved, the capacity is not obviously attenuated during large-current charging and discharging, and meanwhile, excellent rate capability is also shown.

The invention relates to a resin composition and application thereof. The resin composition comprises the following components: aminophenol trifunctional epoxy resin, amino tetrafunctional epoxy resin, phenol dicyclopentadiene epoxy resin, phenoxy resin, nitrile rubber modified epoxy resin and polyfunctional hydroxyl acrylic resin. The six components are compounded, the glass transition temperature of a resin system is increased synergistically, the flexibility, heat resistance and pressure resistance of the resin composition are improved, the excellent insulation reliability of the resin composition is kept under the high-temperature condition, and the application requirements of 3D special-shaped processing can be met when the resin composition is applied to an aluminum-based copper-clad laminated board.

Preparation of polyimides and functional polyimides comprising novel indane bis-o-aminophenols and photosensitive compositions obtained therefrom are described.

The invention relates to a preparation method and application of a CoNi alloy nanoparticle doped double-shell hollow carbon material, and belongs to the field of nano material preparation technology and electromagnetic wave absorption application. 3-aminophenol and formaldehyde are subjected to a condensation polymerization reaction to synthesize phenolic resin balls, the phenolic resin balls are placed in 3-aminophenol and formaldehyde again to react, and the double-shell hollow phenolic structure is obtained. And adding the double-shell hollow phenolic aldehyde structure into cobalt nitrate hexahydrate (Co (NO3) 2.6 H2O) and 2-methylimidazole for low-temperature reaction, then adding a solution of (Ni (NO3) 2.6 H2O) for reaction at high temperature and high pressure, and drying to obtain the CoNi alloy nanoparticle doped double-shell hollow carbon material. According to the preparation method disclosed by the invention, the double-shell structure is taken as a main template, and the CoNi alloy nanoparticles are used as active components to be doped in the double-shell hollow structure in situ, so that the cascade synthesis of the microstructure of the nano material is greatly enriched, and the obtained CoNi alloy nanoparticle doped double-shell hollow carbon material has excellent electromagnetic wave absorption performance.

Compositions and methods for inhibiting and retarding polymerization of monomeric compositions are described that use a naphthoquinone and an oxygenated aminophenol. When present in a monomer-containing composition, the combination of naphthoquinone and oxygen-containing aminophenol provides an unexpectedly beneficial anti-polymerization agent effect, thereby inhibiting the formation of unwanted fouling polymers. The anti-polymerization agent combination can be added to a hydrocarbon composition, such as petroleum, that can include a polymerizable component, such as styrene, wherein the hydrocarbon composition is purified or processed, such as under distillation.

The invention provides a novel borate tricyclic hemicyanine dye and a synthesis method thereof, and the dye has excellent fluorescence performance and is suitable for biological detection and medical imaging. Two synthesis routes are provided, 5-formylfuran-2-boric acid is used as a raw material, and the target dye is efficiently synthesized through different chemical reaction routes. According to the route I, hemicyanine and indole quaternary ammonium salt are condensed to form a hemicyanine intermediate, and the hemicyanine intermediate reacts with o-aminophenol or a derivative thereof; the route II is firstly condensed with aniline or a derivative thereof to form an imine intermediate, and then a final product is synthesized through a substitution reaction. The synthesis steps are simple, conditions are mild, and large-scale production is facilitated. The synthesized dye has good water solubility and biocompatibility, is adjustable in fluorescence characteristic, and is suitable for various biomedical applications. The embodiment and attached drawings show the synthesis process, the fluorescence property and the application thereof in cell imaging in detail, and show the important value in scientific research and practical application.

The invention discloses a synthesis method of p-aminophenol derivatives, which comprises the following steps: dissolving a compound A in a mixed solvent of acetonitrile and water, cooling to 0-5 DEG C, then adding an organic and inorganic acid catalyst, reacting at room temperature, distilling to remove the solvent, and then adding citric acid to continuously react to obtain a compound B; the initial raw materials are simple and easy to obtain and easy to purchase and store on a large scale, and the synthesized p-aminophenol compound is high in purity and can meet the requirements of most industrial applications on product purity.

The invention discloses a colorimetric detection method for cMyBP-C protein based on nano-enzyme activity, preparation of a bismuth selenide / nano-gold composite material and application of the bismuth selenide / nano-gold composite material in protein detection. The method comprises the following steps: performing ultrasonic stripping on a bismuth selenide block to obtain a few-layer bismuth selenide dispersion liquid; and then sequentially adding a sodium borohydride aqueous solution and a chloroauric acid aqueous solution under a stirring condition, and carrying out in-situ reduction to form gold nanoparticles loaded on the surface of bismuth selenide. The composite material has the capability of catalyzing reduction of p-nitrophenol into p-aminophenol, and the color of the solution is changed from yellow to colorless. After the cMyBP-C antibody is modified on the surface of the composite material, the catalytic activity is inhibited; after a to-be-detected sample is added, the antibody and the protein are specifically combined to cause dissociation, and the catalytic activity is recovered. The cMyBP-C protein is quantitatively detected by observing the color change of the solution or monitoring the reduction of the ultraviolet absorbance at 400 nm.

A method for producing paracetamol from renewable biological feedstocks. The method comprises isolating p-hydroxybenzoic acid (pHBA) or a mixture of pHBA and p-hydroxybenzamide (pHBAm) from biomass. One version of the method comprises converting pHBA to pHBAm, subsequently to p-aminophenol (pAmP), and subsequently to paracetamol. The yield can be increased by recycling unreacted pHBAm to feed into the amide to amine conversion step. In a second version of the method, the phenolic hydroxyl group of pHBA or pHBAm is first protected. The subsequent reactions proceed as noted, with deprotection as the last step.

The present application relates to a hybridoma cell strain secreting a chlorinated nitrogen aminophenazone monoclonal antibody and its application, and belongs to the technical field of immune detection. The hybridoma cell strain secreting a chlorinated nitrogen aminophenazone monoclonal antibody was preserved in the China General Microbiological Culture Collection Center on April 24, 2026, and the address of the preservation is No. 1, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC No. 46821. The monoclonal antibody secreted by the hybridoma cell strain of the present application has good detection sensitivity (IC 50 Value is 0.27 ng / mL) to chlorinated nitrogen aminophenazone, and can be used for the residual detection of chlorinated nitrogen aminophenazone.

The invention discloses a chlorine-free etching agent for a photovoltaic printing tungsten steel mesh and a preparation method and application of the chlorine-free etching agent for the photovoltaic printing tungsten steel mesh, and the chlorine-free etching agent for the photovoltaic printing tungsten steel mesh comprises the following components in percentage by weight: 0-2.5% of o-aminophenol sulfonic acid; 0 to 3% of diphenyl sulfonyl-4, 4 '-difluoro-3, 3'-disodium disulfonate; 0 to 1.2 percent of 2, 5-bis (methylsulfonyl)-1, 4-phenylenediamine; 0.5 to 2% of 2, 5-dimethyl phenyl thiourea; 0.2 to 3% of 5-(difluoromethoxy)-2-sulfydryl-1H-benzimidazole, and the balance of water; 0 to 2% of a hydroxyl-terminated vinyl pyrrolidone-styrene copolymer; 33-70% of an acidic etching main agent; the acidic etching main agent is a mixture of nitric acid, hydrofluoric acid and phosphoric acid. According to the etching solution, through the synergistic effect of all the components, the effect that the diameter of the tungsten steel mesh is accurately etched from 10 micrometers to 6 micrometers at the normal temperature is achieved, and the smoothness and brightness of the surface of the etched tungsten steel mesh are considered.

This invention discloses a ZnCdS / APF composite photocatalyst, its preparation method, and its application, belonging to the field of photocatalysis technology. The composite photocatalyst uses a ZnCdS solid solution as the light-absorbing core and aminophenol-formaldehyde resin (APF) as the interface modification layer. The two are polymerized in situ to form a tight heterojunction. This invention uses zinc acetate, cadmium acetate, and thioacetamide as precursors to synthesize ZnCdS via ethylenediamine-assisted hydrothermal synthesis; then, using 3-aminophenol and formaldehyde as monomers, APF is grown in situ on the ZnCdS surface under ammonia catalysis, followed by washing and drying to obtain the final product. This preparation process is mild, requires no precious metals, and is easily scalable. The composite photocatalyst achieves a photocatalytic hydrogen peroxide production rate of up to 5318 μmol g under visible light irradiation and an oxygen atmosphere. ‑1 h ‑1 Compared to pure ZnCdS (2983 μmol g), ‑1 h ‑1 The photocatalyst exhibits a 78.3% improvement in light absorption capacity, carrier separation efficiency, and photoelectrochemical performance, all significantly superior to the pure-phase material. Characterization results, including SEM, UV-vis DRS, Mott-Schottky, EIS, and transient photocurrent response, confirm the synergistic enhancement effect of APF on ZnCdS. This composite photocatalyst shows broad application prospects in the green synthesis of H2O2.

The invention belongs to the technical field of inorganic nonmetallic materials, and particularly relates to a preparation method and application of a cubic phase TiC nanosheet. The preparation method comprises the following steps: firstly, taking multi-layer Mxene (Ti3C2Tx) as a raw material, taking tetramethylammonium hydroxide as an intercalation agent, and thinning intercalation to obtain less-layer Ti3C2Tx; then 3-aminophenol is used for carrying out coating treatment on the Ti3C2Tx nanosheets, and the content of C on the surfaces of the few-layer Ti3C2Tx nanosheets is increased; and finally, taking the coated few-layer Ti3C2Tx as a template, and carrying out high-temperature calcination treatment in an argon atmosphere to obtain the cubic-phase TiC nanosheet. The cubic phase titanium carbide nanosheet prepared by the method has the advantages of controllable sheet shape, simple operation and mass production, and can be used in the field of electromagnetic wave absorption.

The invention belongs to the technical field of organic synthesis, and particularly relates to an alkyl aminophenol compound and a synthesis method thereof. Aiming at the problems of harsh conditions, insufficient selectivity and the like of the existing arylamine C-N bond breaking method, the invention provides a novel method for synthesizing the p-alkyl aminophenol compound by oxidizing aromatic amine through PhI (OAc) 2 to selectively break a C (aryl)-N bond under a mild condition. According to the method, a series of p-alkyl aminophenol compounds with potential biological activity can be synthesized within 3 hours at the yield of 56-82%, and the method is suitable for preparation of derivatives such as indole ethylaminophenol and adamantane methylaminophenol.

The invention belongs to the technical field of drug research, and particularly relates to a polyvinyl alcohol modified carbon dot and application. The polyvinyl alcohol modified carbon dots are prepared according to the following steps: taking p-aminophenol and ethidene diamine as precursors, and carrying out hydrothermal reaction to obtain p-aminophenol-ethidene diamine carbon dots; and performing surface modification on the p-aminophenol-ethylenediamine carbon dots by using polyethylene glycol to obtain the p-aminophenol-ethylenediamine carbon dots. The polyvinyl alcohol modified carbon dots have good anti-oxidation and anti-inflammatory effects, and can be used for preparing drugs for treating renal ischemia reperfusion injury.

The invention discloses a method for detecting polyvinyl chloride micro-plastic through photoelectrochemistry. Specifically, the invention develops a polyvinyl chloride micro-plastic photoelectrochemical aptamer sensor, and establishes a detection method based on the sensor, the method comprises the following steps: forming a double-chain compound by a thrombin aptamer P1 and a polyvinyl chloride aptamer P2, releasing P1 after the P2 recognizes PVC, splitting P1 under the action of exonuclease I, and detecting the PVC by virtue of the split P1. At the moment, free thrombin in the system degrades the p-aminophenol modified polypeptide to generate AP, a Bi < 3 + > / Bi < 2 + > MMCT process is triggered, enhanced photocurrent is output, AP regeneration is promoted through DI-mediated EDRR, the photocurrent is further amplified, and the sensitivity of a photoelectrochemical (PEC) sensor for detecting PVC is remarkably improved. The detection method is easy to operate, high in response speed, good in selectivity and high in sensitivity, and has good accuracy in detection of actual samples (such as cosmetics as lipsticks and liquid foundation).

There are provided indane bis-o-aminophenol compounds capable of producing soluble polyimides, functional polyimides, and poly-o-hydroxyamides.

The invention discloses a copper ion detection fluorescent probe LCY as well as a preparation method and application thereof, the copper ion detection fluorescent probe LCY takes benzothiazole-2-acetonitrile as a fluorophore, and the structure of the copper ion detection fluorescent probe LCY is shown in the specification. The fluorescent probe LCY with the m-aminophenol derivative as a parent is prepared through condensation of the m-aminophenol derivative and benzothiazole-2-acetonitrile, and the probe is novel in structure, has specific selection on copper ions, is short in response time and high in sensitivity, has selectivity on glyphosate, can effectively detect glyphosate residues and has good application prospects. More importantly, the preparation method of the probe is simple, and the obtained product is solid powder, easy to store and good in stability. # imgabs0 #

The invention discloses a phenolic amine adduct in the technical field of epoxy curing agent preparation and a preparation method thereof. The method comprises the following steps: 1) mixing an aminophenol compound, a solvent, and a chain extender at 80-120° C. for reaction for 4-8 hours, and then adding a capping agent and mixing to obtain an intermediate; and 2) dropwise adding the intermediate to a raw amine, and reacting at 60-90° C. for 2-8 hours to obtain the phenolic amine adduct. The method aims to obtain an amine curing agent having a phenolic hydroxyl group in its structure. Compared with the phenalkamine technology based on the Mannich reaction, the method does not require the use of toxic aldehydes and ketones, nor does it require a complex dehydration process. The synthesis process is simple and efficient, and the raw material conversion rate is high. The product has the advantages of fast curing speed, low-temperature curing capability, and no oil surface whitening in a high-humidity environment as an epoxy resin curing agent. By selecting specific raw materials, a water-based product can also be prepared, and has a wide range of uses.

The invention relates to a p-aminophenol electrochemical sensor, a preparation method and application. The invention discloses a one-week WSe2 and Se / Ti < 3 > C < 2 > T < x > MXenes nano material compound modified glassy carbon electrode and a preparation method thereof. The glassy carbon electrode sensor has the advantages of convenience in operation, low cost, high detection speed and real-time monitoring. The p-aminophenol can be accurately detected, the linear range of detection is wide, the detection limit is low, and the anti-interference performance is high.

The invention discloses a modified polybenzimidazole, which belongs to the field of fuel cells. The modified polybenzimidazole is prepared by a simple preparation process using raw materials of p-aminophenol, triethylamine, formaldehyde solution, polybenzimidazole, halogenated hydrocarbon, potassium carbonate and potassium iodide. The modified polybenzimidazole prepared by the invention can be cross-linked and cured under heating conditions without the need for an external cross-linking agent, thereby simplifying the preparation process of the cross-linked polybenzimidazole, so that it can be mixed evenly regardless of whether it is in a solution or powder state, which helps to improve the uniformity of the cross-linking density of the cured product, thereby helping to improve the quality stability of the product. In addition, the functional groups on the side chains of the prepared modified polybenzimidazole can help to improve its compatibility, solubility and crystallinity, and can also increase proton conductivity, thereby reducing its dependence on the amount of acid added and thereby alleviating the acid leakage problem.

The invention discloses a preparation method of a low-viscosity aminophenol polyglycidyl derivative, which comprises the following steps: (1) under the condition that the reaction temperature is not higher than 25 DEG C and in the presence of a catalyst, enabling aminophenol and epoxy chloropropane to be subjected to full ring-opening reaction by utilizing a water-soluble polar cosolvent; (2) adding water accounting for 0.5-10% of the mass of the epichlorohydrin at the temperature not higher than 60 DEG C, adding alkali metal hydroxide in batches, and carrying out dehydrochlorination reaction; (3) dissolving the crude product obtained in the step (2) in a water-insoluble solvent, and washing with a low-concentration alkali metal hydroxide aqueous solution at 30-100 DEG C; and (4) washing with a low-concentration sodium dihydrogen phosphate solution, and carrying out reduced pressure distillation on a solvent layer to remove the solvent, thereby obtaining the aminophenol polyglycidyl derivative. Through the mode, the aminophenol polyglycidyl derivative with close to three functionality degrees can be synthesized.

The present disclosure provides indane bis-o-aminophenol compounds capable of producing soluble polyimides, functional polyimides, and poly-o-hydroxyamides.

The invention discloses an organic gas adsorption gel for a dust-free workshop. The preparation method comprises the following steps: weighing the following preparation raw materials in parts by mass: 60-80 parts of bis (3-aminophenyl) polydimethylsiloxane; 10 to 30 parts of an acid ester compound; 1 to 10 parts of 2, 2 '-azo-2-methyl propionitrile; 1-5 parts of styrene and derivatives thereof; 0.1 to 0.5 part of divinyl benzene; 1 to 50 parts of ultrapure water; a three-dimensional cross-linked flexible network is formed through in-situ free radical polymerization; the structure has the non-polar adsorption capacity of a polysiloxane main chain and the specific effect of an amino / phenolic hydroxyl functional group on polar VOCs, various organic gases such as benzene, methylbenzene and formaldehyde can be efficiently captured, and byproducts are not released; the preparation process comprises the steps of ultrasonic dispersion, vacuum defoaming, gradient heating polymerization and solvent replacement, the specific surface area of the obtained gel is 280-420 m / g, the pore diameter is 3.5-8.2 nm, the gel can be directly coated and used in an ISO Class 1-5 level dust-free workshop, and the gel has the characteristics of high adsorption broad spectrum, structural stability, greenness and recyclability.

Described are compounds, compositions, and methods that include oxygenated aromatic amines, such as an aminophenol-, phenyl-p-phenylenediamine-, and diaminobenzene-based compound useful as antioxidants. The oxygenated aromatic amine includes a secondary and / or tertiary amine group having a nitrogen that is attached to one or two carbon-containing group(s), the carbon-containing group(s) having a hydroxyl and / or ether group separated from the nitrogen by one or more carbon atoms.

The present invention provides a polymerization method of 1,3-dioxolan-4-one compounds, comprising the following steps: carrying out a polymerization reaction on the 1,3-dioxolan-4-one compounds under the catalysis of an imidazole-substituted aminophenoxy zinc complex catalyst. The imidazole-substituted aminophenoxy zinc complex catalyst has the structure shown in formula (I), and its preparation method comprises the following steps: directly reacting a neutral ligand with a metal raw material compound in an organic medium, and then obtaining the target compound through filtration, concentration, and recrystallization steps. The 1,3-dioxolan-4-one compounds have the structure shown in formula (II). Compared with the prior art, the polymerization method provided by the present invention enables the 1,3-dioxolan-4-one compounds to efficiently achieve homopolymerization and random copolymerization with lactide.

The invention relates to a high performance liquid chromatography detection method for 4-aminophenol-2, 6-dicarboxylic acid in a mesalazine raw material medicine, and belongs to the field of medicine analysis. According to the high performance liquid chromatography detection method for the 4-aminophenol-2, 6-dicarboxylic acid in the mesalazine bulk drug, octadecylsilane chemically bonded silica is adopted as a filling agent, a 0.01-0.06 mol / L phosphate buffer solution is adopted as a mobile phase A, a combination of the mobile phase A and one or two of acetonitrile or methanol is adopted as a mobile phase B, and the content of the 4-aminophenol-2, 6-dicarboxylic acid in the mesalazine bulk drug is detected through the high performance liquid chromatography. Wherein the pH value of the phosphate buffer solution is adjusted to 5.5-7.5 by using a dilute sodium hydroxide solution. The method is accurate and reliable in determination result, the solvent does not interfere with impurity detection, the specificity is good, and the product quality can be well controlled.