128 results about "Azo compound" patented technology

This polarizing film containing a base material is characterized in that the base material includes an azo compound represented by formula (1) or a salt thereof (compound A), and an azo compound represented by formula (2) or a salt thereof (compound B). (In formula (1), X1 represents an amino group which may have a substituent, a phenylamino group which may have a substituent, a naphthylamino group which may have a substituent, a benzoylamino group which may have a substituent, or a naphthotriazole group which may have a substituent, Q1 and R1 to R4 each independently represent an optional substituent, and m represents an integer of 1 to 3.) (In formula (2), X2 represents an amino group which may have a substituent, a phenylamino group which may have a substituent, a naphthylamino group which may have a substituent, a benzoylamino group which may have a substituent, or a naphthotriazole group which may have a substituent, Q2 and R5 to R8 each independently represent an optional substituent, R9 represents a hydrogen atom or a methyl group, and n represents an integer of 1 to 3.)

The invention relates to the technical field of biological materials, in particular to a pillararene-based photoresponse MOF-based ion gating nanochannel and a preparation method thereof. According to the pillararene-based photoresponse MOF-based ion gating nano-channel, a bullet-shaped nano-channel is prepared by taking PET (Polyethylene Terephthalate) as a substrate, and the substrate can provide structural support; p5A-MOF-1 based on pillararene is used as a core functional layer, and the core functional layer can provide a stable cavity environment; a P5A-MOF-1 cavity is filled with an organic aromatic azo compound, so that the light response structure change is realized. And the effective volume of the P5A-MOF-1 cavity is regulated and controlled through the photoisomerization effect of the azo group, so that precise gating of ion transmission is achieved. The preparation method provided by the invention is simple and convenient to operate, mild and controllable in condition and beneficial to large-scale production.

Provided is an azo compound represented by formula (0) or a salt thereof. In formula (0), X represents an amino group that may have a substituent or a phenylamino group that may have a substituent, Q and R1 to R5 each independently represent a substituent, n represents an integer of 1 to 3, and s, t, u, and v each independently represent an integer of 0 to 2.

The invention relates to the field of water quality monitoring of a secondary loop of a nuclear power plant, in particular to a synchronous detection system and method for ammonia and hydrazine. The method comprises the following steps: removing impurities in a sample by utilizing filtration and reverse chromatography; the sample is quantified to 240-260 [mu] L; carrying out gradient elution on the sample by using a methanesulfonic acid solution as an eluent; wherein in the first stage, the concentration of a methanesulfonic acid solution is controlled to be 13-18 mmol / L, and a sample is washed; in the second stage, the concentration of the methanesulfonic acid solution is controlled to be 55-70 mmol / L, and the sample is Drawing a low-concentration curve based on the 10-500 [mu] g / L standard solution, and drawing a high-concentration curve based on the 500-3000 [mu] g / L standard solution; and measuring the ionic conductivity values of NH4 < + > and N2H5 < + >, automatically selecting a corresponding concentration curve according to the peak area of the ionic conductivity values, and calculating the concentration of ammonia and hydrazine. According to the invention, the synchronous detection of ammonia and hydrazine concentration is realized, the analysis process is simplified, the use of toxic and harmful substance phenol and the generation of toxic and harmful waste liquid of yellow azo compound are solved, the measurement accuracy is improved, and the relative measurement error can be controlled within + / -2.0%.

The invention discloses a preparation method of a light response type lubricating antibacterial antifouling coating based on an N-substituted azo compound. The light response type lubricating antibacterial antifouling paint is mainly prepared by uniformly stirring an N-substituted azo-isocyanate prepolymer and a cyclodextrin modified polyol prepolymer, the N-substituted azo-isocyanate prepolymer is obtained by uniformly mixing dihydroxyl-terminated polydimethylsiloxane, isocyanate, an N-substituted azo compound and an organic tin catalyst in an organic solvent a and then reacting under certain conditions. The N-substituted azo compound serves as a bactericide, the bactericidal performance is remarkably enhanced through the synergistic effect of an N-substituent and an azo group of the N-substituted azo compound, meanwhile, azo serves as a photoresponse object of the coating, cis-isomerism and trans-isomerism changes can be generated under ultraviolet light emission, therefore, the subject-object connection effect with cyclodextrin is changed, movement of lubricating liquid in the coating is regulated and controlled, and the anti-corrosion performance of the coating is improved. The self-supplement of the lubricating liquid on the surface of the coating is realized, the service life of the coating is prolonged, and the antifouling property of the coating is improved.

The invention discloses a universal water-based zinc-based battery electrolyte additive and a battery preparation method, and particularly relates to the technical field of water-based zinc-based secondary batteries, the universal water-based zinc-based battery electrolyte additive is a nitroimidazole organic matter, contains an imidazole ring and a nitryl group, and is characterized in that the nitroimidazole organic matter is a nitroimidazole organic matter; the high-electronegativity zinc ion electrode has one or more functional groups of methyl, hydroxyl, carboxyl, carbonyl, imino, sulfo and halogen, nitryl can be reduced to form imino or imidazole is subjected to ring opening to form an azo compound in the electrochemical process, and high-electronegativity sites can be adsorbed on the surface of the electrode or interact with zinc ions. Nitrogen sites with high electronegativity can be adsorbed to the surface of the zinc negative electrode, contact between water and the zinc negative electrode is isolated, a hydrogen evolution reaction and a corrosion side reaction are limited, the electrochemical environment of an electrode interface is stabilized, and the electrolyte additive can promote 3D diffusion of zinc ions, reduce the critical nucleation size of zinc deposition and inhibit growth of zinc dendrites.

Provided is a novel method for producing water-absorbent resin particles with which it is possible to obtain water-absorbent resin particles having excellent high absorption performance (in particular, physiological saline water retention, physiological saline water absorption under a load of 4.14 kPa, and 5-minute value characteristics of non-pressurized DW). The method for producing water-absorbent resin particles is a method for producing water-absorbent resin particles by subjecting a water-soluble ethylenically unsaturated monomer to reversed-phase suspension polymerization using radical polymerization initiators, at least one of the radical polymerization initiators being an azo compound, the reversed-phase suspension polymerization comprising two or more polymerization steps, in the first-stage polymerization step, (a) 0.01 mmol or more and 0.11 mmol or less of an internal crosslinking agent is used with respect to 1 mol of a water-soluble ethylenically unsaturated monomer used during the first-stage polymerization; in the second-stage polymerization step, (b) 0-0.042 mmol of the internal crosslinking agent is used per 1 mol of the water-soluble ethylenically unsaturated monomer used during the second-stage polymerization, (c) 0.38 mmol or less of the azo compound is used per 1 mol of the water-soluble ethylenically unsaturated monomer used during the second-stage polymerization, and (c) 0.38 mmol or less of the azo compound is used per 1 mol of the water-soluble ethylenically unsaturated monomer used during the second-stage polymerization. A surface crosslinking step is provided after the polymerization step subsequent to the second step.

The present invention provides a method for producing vinyl ether having a sulfur-containing substituent. This method for producing sulfur-containing vinyl ether represented by formula (1) (wherein R1 and R2 each independently represent a C1-5 alkanediyl group, R3 represents a C1-5 alkyl group, and n is an integer of 0-4) comprises a step for obtaining sulfur-containing vinyl ether represented by formula (1) by reacting a compound represented by formula (2) (wherein R1 and R2 each independently represent a C1-5 alkanediyl group, and n is an integer of 0-4) and a compound represented by formula (3) (wherein R3 represents a C1-5 alkyl group) in the presence of a phosphorus compound and an azo compound.

The invention relates to an MOFs (Metal-Organic Frameworks) catalyst for oxidative coupling of aromatic amine as well as a preparation method and application of the MOFs catalyst. And the MOFs catalyst is an MOF-808 catalyst. The structure is simple and clear, and the catalyst has good catalytic activity and cycling stability; h2O2 can be effectively activated, and aromatic amine can be efficiently and selectively oxidized, so that the conversion rate of aromatic amine and the selectivity of products can be improved in a method for preparing azoic compounds by catalyzing aromatic amine oxidation.

To provide a phosphorus-containing (meth)acryloyl compound which is useful as a reactive type phosphorus-based flame retardant, and is excellent in heat resistance and dielectric characteristics in a cured product, a flame retardant resin composition, a cured product, and a laminated plate for an electronic circuit board.SOLUTION: A resin composition contains one or more phosphorus-containing (meth)acryloyl compounds (A) represented by the following formula (1), a radical polymerizable compound (B) having at least one group represented by the following formula (5), and an azo compound (C), wherein the weight ratio of the compound (A) to the total of the compounds (A) and (B) is 0.6 or less, and the content of the compound (C) with respect to 100 pts.wt. of the total of the compounds (A) and (B) 0.01 to 10 pts.wt.SELECTED DRAWING: None

The invention discloses a surface-enhanced Raman probe as well as preparation and application thereof. The surface-enhanced Raman probe comprises a silver nanorod and a 4-amino thiophenol molecular layer adsorbed on the surface of the silver nanorod, pATP molecules and the surface of the silver nanorod form an Ag-S bond through sulfydryl (-SH) to form AgNRs (at) PATP, the two AgNRs (at) PATP molecules easily form a corresponding azo compound DMAB, and a pi-pi conjugated structure between the DMAB and nitro explosive molecules can effectively promote electron transfer, combine into AgNRs (at) PATP (at) TNT and generate a hot spot signal, so that a Raman signal is enhanced, the detection limit is reduced, the accuracy is high, and the method is suitable for industrial production. The trace detection of the nitro explosives is realized.

The application provides a regeneration method of halogenated nitrobenzene continuous hydrogenation catalyst, and relates to the technical field of fixed bed halogenated nitrobenzene hydrogenation. The regeneration method mainly comprises the following steps: using alcohol, alkali, petroleum ether and ethyl acetate to preliminarily clean the bed layer, removing azo compounds and other pollutants on the surface of the catalyst by using the special properties of ionic liquids, and then completing the regeneration of the catalyst through the steps of pickling, precious metal solution treatment and drying. The application overcomes the defects of the prior art, has the advantages of simple operation, mild conditions and low cost, realizes the in-situ removal of surface impurities such as reaction intermediates and azo compounds on the catalyst surface without damaging the structure of the catalyst and disassembling the catalyst, further supplements the lost metal active components, and can effectively restore the catalyst activity.

A curable composition can comprise a polymerizable material and an initiator, wherein the polymerizable material can comprise at least one multi-functional vinylbenzene monomer in an amount of at least 70 wt % based on the total weight of the polymerizable material; the at least one initiator includes an azo-compound; and wherein a cured layer of the curable composition has a linear shrinkage after a baking treatment at 350° C. of not greater than 3.0%.

A Cu x The preparation method of O / BNAD composite photocatalyst adopts a soft template method. Porous h-BN (p-BNNS) is prepared by high-temperature calcination of the precursor. Under low-temperature conditions, a diazotization reaction is used to generate p-BNNS diazonium salt, which is then coupled with an aromatic amine to obtain a porous boron nitride azo compound (p-BNAD) covalently linked by -N=N-azo bonds. Finally, copper oxide / boron azo nitride (Cu) is prepared by vacuum impregnation with copper salt. x This invention utilizes an O / BNAD composite photocatalyst for the efficient reduction of Cr(VI) and the inhibition of bacteria. Under simulated sunlight, Cu... x O / BNAD can effectively reduce Cr(VI) ions, with an apparent kinetic constant of 0.071 min. ‑1 The conversion rate is as high as 88.67%. Under visible light irradiation, it can effectively inhibit the reproduction of Gram bacteria, with an antibacterial rate of 98.0-99.9%.

The invention relates to an initiator for preparing EVOH as well as a preparation method and application thereof, the initiator is a cyclic bisazo compound, and the structural formula of the cyclic bisazo compound is shown as a formula A. Compared with the prior art, the initiator provided by the invention has a ring rigid structure and two azo groups, can rapidly initiate generation of free radicals with a certain concentration, is high in polymerization efficiency, and effectively improves the performance of an EVOH product.

The present invention provides diazo compounds having anti-trypanosomal activity, with less or no side-effects. The diazo compounds are structural analogue of quinapyramine and possess characteristics necessary for the targeted pharmacologic action of anti trypanosomosis, with reduced cytotoxicity. The compounds were found to have less cytotoxicity, and identical or better anti- parasitemia effect as compared to conventional quinapyramine sulfate.

The application provides an organic negative electrode and a metal-air battery, the organic negative electrode comprises an organic matter with a low redox potential, the organic matter with the low redox potential comprises phenazine, diquinoxaline phenazine, a nitrogen heterocyclic ring, a carboxylate or an azo compound, the organic matter in the organic negative electrode is corrosion resistant and the redox potential can be adjusted, even reaching a negative reduction potential comparable to that of hydrogen, so that the phenomenon of hydrogen evolution corrosion cannot occur; a large number of functional groups and active sites in the organic matter can induce uniform deposition of metal ions, and there is no condition for dendrite growth and formation of a passivation layer, so that various problems caused by the above metal negative electrode can be completely avoided; the metal-air battery with the above organic negative electrode has the advantages of long cycle time, stable performance, safety, environmental protection and low cost, and has a wide application prospect in the field of large-scale energy storage.

The invention provides a method for preparing aza-2, 5-cyclohexadienone, and relates to the technical field of organic synthesis. Substituted phenol, an azo compound, inorganic salt and water are mixed, an intermolecular coupling reaction is carried out, aza-2, 5-cyclohexadienone is obtained, and the inorganic salt comprises one or more of carbonate, bicarbonate, phosphate, dihydric phosphate, dihydric phosphate, chlorine salt, sulfate, sulfite and silicate of alkali metal elements. According to the present invention, the cheap and easily available inorganic salt is adopted as the catalyst to catalyze the substituted phenol and azo compound molecule coupling reaction to prepare the aza-2, 5-cyclohexadienone, and the water is adopted as the reaction solvent, such that the preparation conditions are mild, the production cost is low, the produced by-products are less, the product yield is high, the atom economy is high, and the separation and the purification are simple. The method provided by the invention is simple and convenient to operate, has no pollution, meets the requirements of green chemical development and is suitable for industrial production.

The invention discloses a boron modified azo compound, a preparation method and application, and relates to the technical field of azo compounds, the preparation method comprises the following steps: step 1, mixing: adding an azo compound and organic boric acid, inorganic boric acid or borane into a solvent according to a mass ratio of 4: (08-1.2), and mixing to obtain a mixture; step 2, reaction: heating the mixture to 75-85 DEG C, and stirring for reaction to obtain a reactant; and 3, discharging: sequentially carrying out extraction, rotary evaporation and crystallization on reactants, and drying to obtain the boron modified azo compound. The preparation method has the effects of improving the thermal stability of the boron modified azo compound, reducing harmful byproducts and improving the mechanical property and chemical inertness; according to the preparation method of the boron modified azo compound, the boron material with high thermal stability is fully utilized, the azo compound is modified by the boron compound, so that the effect of a decomposition mechanism of the azo compound is changed, the operation is simple and safe, and the preparation method is suitable for large-scale mass production.

The present invention provides a compound that can impart both leveling and recoatability to the cured coating film. [Solution] The present invention relates to a copolymer containing a silicone-based unit derived from a silicone compound and a hydrophilic unit derived from a hydrophilic azo compound (excluding the aforementioned silicone-based unit) as repeating units.

The application discloses a preparation method of 4,4',6,6'-tetraminoazo-1,3,5-triazine, belongs to the field of triazine azo compound synthesis, and solves the problems of dispersed preparation steps, harsh reaction conditions and long reaction time of the azo compound. The method comprises the following steps: after trichloro melamine (TCM) is mixed with a sodium hydroxide solution and reacts, a coupling reaction is carried out under stirring at room temperature to obtain 4,4',6,6'-tetrachloroaminoazo-1,3,5-triazine; the 4,4',6,6'-tetrachloroaminoazo-1,3,5-triazine solid is dissolved in an alkaline solution containing a reducing agent to obtain 4,4',6,6'-tetraminoazo-1,3,5-triazine solid. The preparation method provided by the application clearly defines the continuous conversion path of the intermediate, compared with the traditional segmented process, the steps are more compact, the reaction conditions are mild and easy to operate, the total reaction time is significantly shortened, the purity of the target product is effectively improved, and the method has good industrial application potential.

The invention relates to a cyclic bisazo initiator for preparing EVOH as well as a preparation method and application of the cyclic bisazo initiator, the initiator is a cyclic bisazo compound, an aromatic ring is used as an intermediate structure of the compound, tetrahydropyridazine is coupled to an adjacent position of the aromatic ring, and the aromatic ring is selected from any one of naphthalene, anthracene, pyrene and perylene. Compared with the prior art, the initiator provided by the invention has a ring rigid structure and two azo groups, can be rapidly initiated to generate free radicals with a certain concentration, is high in polymerization efficiency, and effectively improves the performance of an EVOH product.

The present application relates to an azo compound represented by formula (1A). L 1 and L 2 represents a divalent linking group or a single bond. y represents 1 or 2. p and q represent 0 or 1, at least one of which is 1. X represents an oxygen atom or NR 5 5 represents a hydrogen atom or an aliphatic hydrocarbon group. R 12 13 14 represents an aliphatic hydrocarbon group or the like, and can have a polymerizable group. Q represents a single bond or a group selected from the group consisting of -OC(=O)-, -C(=O)O-, -C≡C-, -CH=CH-, -N=N-, -NHC(=O)-, and -C(=O)NH-. Ar 1 2 3 represents 1,4-phenylene or a divalent sulfur-containing aromatic heterocyclic group. In the case where y is 2, the two Ar 3 may be the same or different.​​​​​

The invention discloses an azo compound as well as a preparation method and application thereof, belongs to the field of dye chemical industry, and particularly provides the azo compound which is of a structure as shown in a general formula I. The azo compound disperse dye disclosed by the invention has excellent pH dependency and thermal migration resistance, and is especially suitable for dyeing application of polyester-cotton fabrics.

The present invention discloses a polysubstituted alkylaryl azo compound, its synthesis method, and application. The present invention provides polysubstituted alkylaryl azo compounds as shown in Formula I and Formula II. Using propargyl reagents and hydrazones as substrates and various nitrogen heterocyclic carbene (NHC) ligands, allene products or propargyl-substituted products can be prepared with high selectivity, all of which contain azo functional groups. The polysubstituted alkylaryl azo compounds prepared by the present invention provide a technical solution that is completely different from the prior art for preparing polysubstituted α-quaternary carbon amine compounds, achieving good yield and selectivity. #imgabs0#

The application discloses a method for detecting clenbuterol based on thin layer chromatography and surface enhanced resonance Raman spectroscopy, and belongs to the technical field of food detection. The method comprises the following steps: (1) adopting thin layer chromatography to preliminarily separate the clenbuterol component from the matrix in the pig liver sample, and confirming the clenbuterol component in the pig liver sample under the ultraviolet lamp of 254 nm; (2) adding aromatic diazonium salt solution to the same Rf value of the clenbuterol component reference sample spot to generate azo compounds, and then adding a surface enhancer silver sol; (3) in-situ detecting the surface enhanced resonance Raman spectrum of the corresponding azo compound component spot, and if the surface enhanced resonance Raman spectrum of the pig liver sample solution at the same Rf value is the same as that of the reference sample solution, it is determined that the pig liver sample contains the clenbuterol component. The application has high specificity for detecting clenbuterol and salbutamol, high sensitivity, fast analysis speed, and is beneficial to fast detection of grass-roots units. The application is suitable for detecting clenbuterol.

This application provides a method for preparing and applying a red reactive dye. The method includes the following steps: S1: providing 2-amino-5-(β-hydroxyethyl sulfone sulfate)-1,3,4-thiadiazole; S2: reacting the amino-containing red azo compound with cyanuric chloride, causing the amino group on the amino-containing red azo compound to undergo a substitution reaction with one chlorine atom in the cyanuric chloride, to obtain a red azo compound containing a dichlorotriazine group; S3: reacting the 2-amino-5-(β-hydroxyethyl sulfone sulfate)-1,3,4-thiadiazole with the red azo compound containing a dichlorotriazine group, causing the amino group on the 2-amino-5-(β-hydroxyethyl sulfone sulfate)-1,3,4-thiadiazole to undergo a substitution reaction with one chlorine atom in the red azo compound containing a dichlorotriazine group, to obtain a red reactive dye. The red reactive dye prepared by this application exhibits high fixation rate and excellent alkali fastness in fiber dyeing.

This invention relates to the field of catalyst technology, and discloses a catalyst for the preparation of chloroaromatic amines, comprising palladium-based nanomaterials co-modified with an organophosphorus ligand and a metavanadate. The palladium-based nanomaterials consist of palladium nanoparticles and a carbon support. The palladium nanoparticles include zero-valent palladium and positive-valent palladium. Phosphorus in the organophosphorus ligand forms a palladium-phosphorus coordination bond with the zero-valent palladium, and metavanadate ions in the metavanadate form a vanadium-oxygen-palladium chemical bond with the positive-valent palladium. The catalyst provided by this invention exhibits high conversion and high selectivity in the catalytic hydrogenation of chloronitroaromatic hydrocarbons to prepare chloroaromatic amines, with virtually no formation of byproducts such as chlorohydroxyaromatic amines, azo compounds, and dechlorination products, and the reaction conditions are mild.

The application relates to the fine chemical technology field and discloses a method for synthesizing an ultraviolet absorber through an alcohol reduction reaction, and the method steps are as follows: under the action of a MOF-derived copper-nickel-cerium trimetallic catalyst, an azo compound (I) or an intermediate nitroxide (II) is reacted with alcohol R-(OH) n A reduction reaction is generated by heating in a reaction kettle, and a benzotriazole compound (III) is prepared. The application utilizes the reduction characteristics of alcohol, adopts the MOF-derived copper-nickel-cerium trimetallic catalyst, combines the porosity and metal synergistic effect regulated by a structure directing agent, effectively improves the catalytic reduction efficiency and reaction selectivity, and the synthesis method has the advantages of no sewage, low cost, high safety and high yield.

The invention belongs to the technical field of organic synthesis, and particularly relates to a method for photochemically synthesizing a benzo [c] cinnoline compound through an azo compound. The method for photochemically synthesizing the benzo [c] cinnoline compound through the azo compound comprises the following steps that an azobenzene compound, lewis acid and an oxidizing agent are added into an organic solvent and react under the condition of white light irradiation at the temperature of 40-50 DEG C, water quenching is conducted after the reaction is completed, then separation and purification are conducted, and the product benzo [c] cinnoline compound is obtained. The method has the advantages of simple operation, low toxicity of reactants, no need of addition of noble metals, easy separation of products and high yield.