55 results about "Azo compound" patented technology

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.

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 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 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 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.

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.

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.

The invention discloses a preparation method of a cerium oxide supported palladium catalyst and application of the cerium oxide supported palladium catalyst in catalytic hydrogenation of azo compounds. According to the catalyst, nano octahedral cerium oxide serves as a carrier, palladium is loaded through an impregnation method, and a high-dispersion Pd / CeO catalytic system is formed. The octahedron of cerium oxide and the hydrogenation activity of palladium have a synergistic effect, the hydrogenation efficiency and selectivity of the catalyst are remarkably improved, the catalyst is suitable for hydrogenation reduction reaction of hydrogenated azo compounds, the preparation method of the catalyst is simple, the cost is low, the hydrogenated azo compounds can be efficiently catalyzed under mild conditions, and compared with a traditional Pd / C catalyst, the catalyst has good application prospects. The catalyst has higher activity and stability.

The application discloses a kind of rubidium-doped cerium oxide-copper composite catalytic materials and its preparation method and application, belong to catalytic technical field.Rubidium-doped cerium oxide-copper composite catalytic material is constituted by rubidium-doped in copper-cerium composite material surface, the copper-cerium composite material is constituted by copper oxide nanoparticles growth on cerium oxide nanorod, its preparation method is: first by hydrothermal method obtains cerium oxide nanorod, then in situ growth copper oxide nanoparticles on cerium oxide nanorod, then dope rubidium.The preparation method step is simple, low in cost, easy to realize large-scale production, and the catalytic material has the advantages, such as specificity is high, conversion rate is good, stable and long service life, etc., it is applied to catalytic aniline oxidation synthesis oxidation azo compound, and shows high catalytic activity, good selectivity, low cost, environment-friendly and the like.

The invention discloses an epoxy vinyl ester resin and a preparation method thereof, the epoxy vinyl ester resin comprises the following raw materials by mass: 4%-36% of an unsaturated epoxy oligomer, 4%-36% of a crosslinking monomer, 0.1%-5.0% of a catalyst 1 #, 5%-15% of organic unsaturated carboxylic acid, 0.2%-2.0% of a catalyst 2 #, 0.01%-0.05% of a polymerization inhibitor, 10.0%-25.0% of anhydride, and 15%-25% of a diluent, the catalyst 1 # includes an azo compound and / or a persulfate, and the catalyst 2 # includes one or more of an imidazole, an imidazole derivative, and an imidazole-metal salt complex. By optimizing the raw material component proportion, improving the preparation process and selecting the adaptive catalyst, the reaction temperature of the synthesis process is reduced, and the temperature in the preparation process is always lower than 90 DEG C, so that the reaction process is easier to control. A casting body of the prepared epoxy vinyl ester resin has high toughness, high hardness, high thermal stability and excellent wear resistance, and can work for a long time in a high-temperature environment.

The present application belongs to the field of detection, and particularly relates to a method for detecting trace diazonium salt in azo compound slurry. The azo compound slurry to be detected is mixed with a detection reagent, and the absorbance of the mixed solution is detected by a UV-visible spectrophotometer, so as to qualitatively and / or quantitatively detect the diazonium salt in the azo compound slurry to be detected. The method for detecting trace diazonium salt is used in reactions consuming diazonium salt, such as coupling reactions in the synthesis of dyes and organic pigments, and the content of trace diazonium salt in the material when the reaction is close to the end point is detected and analyzed, so as to control the addition amount of upstream diazonium salt, improve the utilization rate of diazonium salt, and ensure the product quality.

The present invention pertains to a polarizing film containing an azo compound, represented by formula (1) below, or a salt thereof. (In formula (1): Ra1, Ra2, Ab1, and Ab2 are such that ring a or ring b has been substituted; one of Ra1 and Ra2 represents a hydroxy group, and the other represents a hydrogen atom, a hydroxyl group, a C1 to C4 alkoxy group, or a C1 to C4 alkoxy group having a sulfo group; one of Ab1 and Ab2 represents a sulfo group, a carboxy group, or an amino group that may contain a substituent, and the other is a substituent selected from the group consisting of a hydrogen atom, a sulfo group, a carboxy group, or an amino group that may have a substituent; Rb1 to Rb6 each independently represent a hydrogen atom, a C1 to C4 alkyl group, a C1 to C4 alkoxy group, a sulfo group, a C1 to C4 alkoxy group having a sulfo group, or an amino group that may have a substituent; h represents 0 or 1; Xb1 indicates an amino group that may have at least one substituent S, a phenylamino group that may have a substituent, a phenylazo group that may have a substituent, a naphthotriazole group that may have a substituent, or a benzoylamino group that may have a substituent; and the substituent S is selected from the group consisting of C1 to C4 alkyl groups, C1 to C4 alkoxy groups, sulfo groups, amino groups, C1 to C4 alkylamino groups, hydroxy groups, carboxy groups, and carboxyethylamino groups, and is different from Ra1, Ra2, Ab1, and Ab2.

The invention belongs to the technical field of pest control, and relates to application of an azo compound as an arginine kinase inhibitor and prevention and control of ampullaria gigas. The azo compound 4-[2-(2-isopropyl-5-methylphenoxy) ethyoxyl]-3-methoxybenzaldehyde (4, 6-dipyrrolidine-1-yl-1, 3, 5-triazine-2-yl) hydrazone obtained through screening can be jointly and stably combined with arginine kinase through multiple types of non-covalent interaction, and the function of an arginine kinase inhibitor is played. When the azo compound provided by the invention is used for preventing and treating ampullaria gigas, an excellent poisoning effect is shown, the activity of the azo compound is higher than that of an existing arginine kinase inhibitor quercetin, and the azo compound is good in selectivity and low in toxicity to vertebrates compared with a traditional molluscicide metaldehyde.

A dental ceramic blank comprising at least one organic compound, characterized in that the blank has an open-pore ceramic framework, wherein the open-pore ceramic framework is selected from an open-pore dental ceramic framework comprising zirconia, aluminum oxide, a mixed oxide comprising zirconia, and / or silicon carbide, wherein the open-pore ceramic framework contains 2 to 50 wt.% of at least one organic compound selected from a) comprising at least one polymerizable monomer and / or a mixture of polymerizable monomers, thermal initiators comprising peroxide and / or an azo compound or a redox system comprising a peroxide, and a reducing agent selected from ascorbic acid, an ascorbic acid derivative, barbituric acid or a barbituric acid derivative, sulfinic acid, a sulfinic acid derivative or a redox system (aa) barbituric acid or thiobarbituric acid or a barbituric acid or thiobarbituric acid derivative and (bb) at least one copper salt or copper complex and (cc) at least one compound with an ionic halogen atom, particularly preferably a redox system comprising 1-benzyl-5-phenylbarbituric acid, copper acetylacetonate and benzyldibutylammonium chloride, and / or b) a polymer of the aforementioned monomers polymerized in the blank with respect to the overall composition of the dental ceramic blank.

The present application provides a silicone-based copolymer and a surface modifier containing the silicone-based copolymer. A compound capable of imparting leveling property and recoatability to a cured film of a coating film is provided. The copolymer involved contains a silicone-based unit derived from a silicone compound and a hydrophilic unit derived from a hydrophilic azo compound (wherein the above silicone-based unit is excluded.) as a repeating unit.

The invention discloses high-wear-resistance anti-attenuation powdered ink and a preparation method thereof, and belongs to the field of powdered ink preparation. The powdered ink is prepared from 70-90% of bonding resin, 5-15% of a coloring agent, 1-5% of a silane coupling agent modified nano SiO2 / TiO2 wear-resistant agent, 0.5-3% of an AO613 and phosphite compound anti-attenuation additive, 2-8% of polypropylene wax and 0.1-2% of a metal-containing azoid-AO613 charge control agent, the performance retention rate is larger than or equal to 90% after the powdered ink is stored for 3 months at 50 DEG C / 80% RH, and the particle size is 5-15 microns. The preparation method comprises the steps of premixing, melting and kneading, cooling and crushing, grading and fluidized bed surface treatment. The powdered ink has the advantages of high wear resistance, attenuation resistance, stable printing and controllable process, and is suitable for industrialization.

The application belongs to the technical field of building materials, and particularly relates to a time-divided shrinkage-controlling composite expansion agent and a preparation method thereof. The composite expansion agent is composed of the following components in parts by weight: 0.5-8 parts of an azo compound, 20-30 parts of magnesium oxide, 10-30 parts of calcium oxide, 30-50 parts of calcium aluminate-calcium sulfoaluminate cement clinker, 5-10 parts of spherical sodium polyacrylate after pre-water absorption, and 5-10 parts of core-shell structure polyacrylamide resin / kaolin composite ball. The time-divided shrinkage-controlling composite expansion agent improves the full-time volume stability of concrete, greatly reduces the volume shrinkage of cement stone, and fundamentally solves the problem of large shrinkage of ultra-low water-binder ratio concrete.

The invention discloses a method for preparing a five-membered azo compound through laughing gas mediation, which comprises the following steps: S1, reacting a gem-diborate compound as shown in a formula I with laughing gas in the presence of a solvent and an alkali reagent to obtain a diazo compound; and S2, adding an olefin compound as shown in a formula II into the reaction system containing the diazo compound for continuous reaction to obtain the five-membered azo compound as shown in a formula III. According to the preparation method, the laughing gas serves as a nitrogen source, the gem-diborate and the olefin which are low in price and easy to obtain serve as reaction raw materials, the known and series of novel five-membered azo compounds can be prepared through a one-pot method, the preparation method is simple, reaction conditions are mild, the reaction yield is high, and the preparation method is suitable for industrial production of the five-membered azo compounds. Besides, the five-membered azo compound prepared by the method can be further converted to prepare a cyclopropane compound and a 1, 3-diamine compound, and has important application value in the fields of biological medicines, pesticides and the like.

Provided are a polarizing film in which dyeing unevenness can be suppressed and excellent optical durability is obtained, an optical laminate, and an organic EL display device. A polarizing film according to an embodiment of the present invention comprises a polyvinyl alcohol resin and an organic dye. The thickness of the polarizing film is 10 µm or less. The single-layer transmittance of the polarizing film is 45% or more. The degree of polarization of the polarizing film is 95% or less. The organic dye includes a first dye that is an azo compound having a ureide skeleton represented by formula (1) or a salt thereof.

In order to overcome the problem of battery performance deterioration caused by free radicals generated by the existing electrolyte azo compound additive, the application provides a non-aqueous electrolyte and a secondary battery, the non-aqueous electrolyte comprises a non-aqueous organic solvent, an electrolyte salt and an additive, the non-aqueous organic solvent comprises a carbonate solvent, the additive comprises a first additive and a second additive, the first additive comprises a compound shown in structural formula 1, and the second additive comprises a compound with a molecular formula of C4H5N: the non-aqueous electrolyte shown in structural formula 1 satisfies the following conditions: 1<=x<=20, and 0.001<=a<=1, 55<=b<=90, 0.0002<=c<=0.01. The non-aqueous electrolyte provided by the application.

The present application relates to the technical field of biological materials, and particularly relates to a pillar arene-based photoresponsive MOF-based ion gate nano-channel and a preparation method thereof. The pillar arene-based photoresponsive MOF-based ion gate nano-channel is prepared by taking PET as a substrate to prepare a bullet-shaped nano-channel, the substrate can provide structural support; taking a pillar arene-based P5A-MOF-1 as a core functional layer, the functional layer can provide a stable cavity environment; filling an organic aromatic azo compound in the cavity of the P5A-MOF-1 to realize a photoresponsive structural change. The effective volume of the cavity of the P5A-MOF-1 is regulated through photoisomerization of the azo group, and then precise gating of ion transmission is achieved. The preparation method is simple in operation, mild and controllable in conditions, and is conducive to large-scale production.

This invention provides a novel method for synthesizing aromatic azo compounds. Using aniline as a raw material, this invention achieves a one-step synthesis of aromatic azo compounds with high yield, strong substrate adaptability, low cost, and is environmentally friendly. It is easily industrialized and has promising application prospects.

The application discloses a battery monomer, a preparation method thereof, an electrode assembly, a separator, a preparation method thereof, a battery device and a power utilization device. The battery monomer comprises a winding electrode assembly, the electrode assembly comprises a bending area and a flat area; the electrode assembly comprises a separator, the separator comprises a porous base film and a coating layer arranged on at least part of the surface of the porous base film; the coating layer comprises an expansion area and a first area; the expansion area is arranged on the surface of the porous base film in the bending area; the expansion area comprises expansion particles, the expansion particles comprise: a core comprising one or more of a silicate composite material and an azo compound; and a shell comprising a thermoplastic polymer. The performance of the battery monomer reduces the active ion precipitation phenomenon, and improves the cycle capacity retention rate and reliability of the battery monomer.

The invention discloses a method for preparing an aryl azo compound by reducing nitro-aromatic hydrocarbon with calcium carbide, and belongs to the technical field of organic synthesis. The method comprises the following steps: by taking nitro-aromatic hydrocarbon as an initial raw material, copper chloride as a mediating reagent, calcium carbide as a reducing agent and dimethyl sulfoxide as a solvent, reacting at 60 DEG C for 5-10 hours, and washing, extracting, drying and performing column chromatography separation and purification on a reaction product to obtain the aryl azo compound. The raw materials are cheap and easy to obtain, the reaction is carried out under normal-pressure mild conditions, a transition metal catalyst and a heavy metal oxidant are not needed, the operation is simple, convenient and safe, the tolerance to active functional groups such as hydroxyl and amino is good, the substrate applicability is wide, and the problems of high cost, poor environmental friendliness, complicated operation, high risk and the like in the existing synthesis method are solved. A new way is provided for efficient and green synthesis of the aryl azo compound, and the method has a good industrial application prospect.

The polarizing element of the present application contains an azo compound represented by the following formula (1) or a salt thereof, or an azo compound represented by the following formula (2) or a salt thereof, and an azo compound represented by the following formula (3) or a salt thereof, in the form of a free acid.