18 results about "Azo compound" patented technology

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 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.

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 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 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.

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.

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 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.

The application relates to a preparation method of 4-(2-hydroxy-2-propyl) cumene hydrogen peroxide, which comprises carrying out an oxidation reaction on 4-isopropyl-alpha,alpha-dimethyl benzyl alcohol and an oxygen-containing gas in a nitrile solvent in the presence of a catalyst and an initiator, wherein the catalyst is selected from one or more of benzene dicarboximide compounds, and the initiator is selected from one or more of azo compounds. The preparation method provided by the application overcomes the problems of slow reaction speed, low reaction conversion rate and low product p-HHP yield in the prior art, and has the characteristics of easy availability of raw materials, high yield, cleanness and environmental protection, mild reaction condition and easy industrialization.

The application discloses a method for preparing a five-membered azo compound mediated by laughing gas, and comprises the following steps: S1, reacting gem-boronate compounds shown in formula I with laughing gas in the presence of a solvent and a base reagent to obtain a diazo compound; S2, adding olefin compounds shown in formula II to the reaction system containing the diazo compound to continue the reaction to obtain five-membered azo compounds shown in formula III. The preparation method uses laughing gas as a nitrogen source, and cheap and easily obtained gem-boronate and olefin as reaction raw materials, so that known and novel five-membered azo compounds can be prepared by one-pot method. The preparation method is simple, the reaction condition is mild, and the reaction yield is high, and the method is suitable for industrialized production of the five-membered azo compounds. In addition, the five-membered azo compounds prepared by the application can be used for further conversion to prepare cyclopropane compounds and 1,3-diamine compounds, and have important application value in the fields of biological medicines, pesticides and the like.

Antimicrobial azo compounds include azobenzene monomers having a phenyl ring comprising a hydroxyl substituent group. The azobenzene monomers can be reacted with a polymeric material to form an antimicrobial coating that prevents growth of persistent biofilms. In some implementations, the azobenzene monomers can be used to coat the surface of a dental resin-based composite to prevent the formation secondary caries. In some implementations, the azobenzene coating can be used to disperse microbial biofilms through a photofluidization process (rapid photoisomerization) in addition to biochemically preventing formation of the microbial biofilm.

The application discloses a method for photoelectrocatalytic green synthesis of nitrogen-containing heterocyclic azo compounds, and uses a composite electrode with a cobalt tetraoxide@nickel molybdate modified layer loaded on a substrate as a working electrode, and an alkaline solution of 5-amino tetrazole as an electrolyte, and performs a catalytic reaction under the condition of simultaneously applying an external bias and visible light irradiation, and finally obtains a target product through post-treatment. The method breaks through the technical bottleneck of the existing synthesis route by using photo-electricity synergistic catalysis, and provides a brand-new technical path for green, safe and efficient preparation of energetic compounds.

The present application relates to a kind of carbonyl oxides azo compounds or its agriculturally acceptable salt and its preparation method and application, and its application as insecticide and fungicide, and part compound exhibits excellent fungicidal activity and nematocidal activity.

A visible light-absorbing azo compound having the structure of Formula (I), wherein X1, X2, X3, Y, and Z are as defined herein, and ophthalmic devices formed therefrom. (I)