36 results about "Bromine Compounds" patented technology

The invention relates to the technical field of power cables, and provides a flame-retardant power cable and a preparation method thereof. The flame-retardant power cable comprises a conductor, an insulating layer and a sheath layer which are sequentially arranged from inside to outside, and the sheath layer is prepared from, by weight, 40-60 parts of polyethylene, 60-80 parts of ethylene-vinyl acetate copolymer, 8-10 parts of compatilizer, 3-5 parts of auxiliaries, 15-20 parts of filler and 60-70 parts of flame retardant. The flame retardant is prepared from magnesium hydroxide, antimony trioxide, hydrated zinc borate and an aromatic bromine-containing compound in a mass ratio of 45: 8: 12: (25-30), and the number of bromine atoms of the aromatic bromine-containing compound is 6-8. According to the technical scheme, the problem of insufficient flame retardant property of the power cable in the prior art is solved.

The present inventive concept relates to a positive electrode for a zinc-bromine aqueous battery containing a nitrogen-doped mesoporous carbon material and a manufacturing method. Coating a nitrogen-doped mesoporous carbon material on graphite felt can alter the structural and chemical properties of the positive electrode to inhibit the crossover of bromine compounds, thereby improving the battery's potential stability.

To provide a method for manufacturing modified wooden materials that are suitable for manufacturing processed products with a wooden texture.SOLUTION: The present invention comprises a first step of contacting a raw wooden material with a compound (A) represented by [R+][OH-] (R+ is an organic cation). Furthermore, the present invention can comprise a second step of contacting the modified wooden material obtained in the first step with a modified compound, and preferably halogenated hydrocarbons (chlorine compounds, bromine compounds) or the like can be used as the modified compound.SELECTED DRAWING: None

The present application relates to a method for liquid phase oxidation of durene, which comprises: a first stage, in the presence of a catalyst, with acetic acid as a solvent, a liquid phase oxidation reaction of an oxidant source and durene to produce an intermediate mixture, the catalyst containing Co salt, Mn salt, Zr salt and bromide compound; a second stage, adding a mixture of bromide and pure water to the intermediate mixture, and continuing the oxidation reaction with the oxidant source to produce pyromellitic acid; wherein the concentration of oxidant in the oxidant source of the first stage is lower than the concentration of oxidant in the oxidant source of the second stage. By controlling the concentration of oxidant in the oxidant source of the first stage to be lower than the concentration of oxidant in the oxidant source of the second stage in the liquid phase oxidation process of durene, the yield of pyromellitic acid and the purity of crude pyromellitic acid are significantly improved.

A resin composition, which is a resin composition containing an ethylene-vinyl acetate copolymer resin as a resin component, wherein the resin composition contains an imidazole compound, a phenolic compound and a thioether compound as antioxidants, and a bromine compound and an antimony compound as flame retardants, and relative to 100 parts by mass of the total content of the above-mentioned resin components in the resin composition, the content of the above-mentioned imidazole compound is 14 parts by mass to 24 parts by mass, the content of the above-mentioned phenolic compound is 1.0 parts by mass to 2.0 parts by mass, the content of the above-mentioned thioether compound is 0.3 parts by mass to 0.9 parts by mass, the content of the above-mentioned bromine compound is 15 parts by mass to 30 parts by mass, and the content of the above-mentioned antimony compound is 5 parts by mass to 15 parts by mass.

The invention provides butyl rubber type thermoplastic vulcanized rubber as well as a preparation method and application thereof. The thermoplastic vulcanized rubber comprises the following components in parts by mass: 100 parts of butyl rubber; 40 to 100 parts by mass of polypropylene; 5-10 parts by mass of a vulcanizing agent; 0.5-2 parts by weight of an anti-aging agent; 5-40 parts by mass of a softening agent; and 5-40 parts by mass of a filler. The butyl rubber type thermoplastic vulcanized rubber is prepared from butyl rubber, polypropylene and a phenolic resin vulcanization system through a dynamic vulcanization method, a high-melting-point bromine-containing compound decabromodiphenyl ether and stannous chloride are adopted as co-vulcanizing agents to form the phenolic resin vulcanization system containing chlorine and bromine, the vulcanization activity is high, and the service life is long. The composition is simple and free of sulfur, the mechanical property is high, and the material can be processed and formed by adopting extrusion, injection molding and mould pressing methods at high temperature.

The invention discloses a photoelectrocatalysis styrene epoxidation method based on a plasmon effect assisted photothermal synergistic effect, and the method comprises the following steps: in a three-electrode system, styrene and an electrolyte containing a bromine-containing compound are mixed, and illumination and voltage are applied to the mixture, so that styrene is subjected to epoxidation reaction. According to the Au / NiCo2O4 composite electrode, Au NPs is loaded on the surface of NiCo2O4, and the styrene epoxidation efficiency is improved through the cooperation of the LSPR effect of Au NPs and the photothermal effect of NiCo2O4.

The application belongs to the field of organic photovoltaics, and relates to a kind of polymer photovoltaic material and its preparation method and application. Double bromide compound A and double side tin compound B are subjected to Stille cross coupling reaction under the action of palladium catalyst, and the polymer photovoltaic material is obtained. The polymer photovoltaic material prepared by the application has an ultra-wide absorption spectrum range from 300 nm to 1200 nm. Such material exhibits an ultra-wide spectral range and a high extinction coefficient, and embodies excellent light absorption capacity. The strong light absorption capacity of the polymer photovoltaic material prepared by the application will help to improve the device efficiency of organic photovoltaics and improve the energy conversion efficiency of the device. The polymer photovoltaic material prepared by the application provides reference value for the design of functional materials in many fields of organic photoelectricity and solar energy utilization and conversion.

The invention provides a method for preparing an ester compound from a benzyl bromide compound under a photocatalysis condition. The method comprises the following steps: adding a benzyl bromide compound, an additive and a manganese oxide catalyst into an acetonitrile solvent, putting into a photoreactor, and reacting for 12-24 hours under the irradiation of blue light in an oxygen atmosphere, so as to oxidize and break a carbon-bromine bond into a corresponding ester compound. The system has the advantages that the catalyst activity is high, the method is wide in application range, reaction conditions are easy to control, the catalyst can be recycled, post-treatment is simple and the like, and the system has a good application prospect.

To provide a hydrogen bromide addition agent that can be produced safely on an industrial scale, is very stable against oxygen and light, and facilitates its handling and storage.SOLUTION: The present invention provides a bromine-containing complex composed of a polar solvent and hydrogen bromide, where the polar solvent is an amide-based aprotic polar solvent, and a hydrogen bromide addition agent including the same, a method for producing a bromine-containing complex and a method for producing a bromine-containing compound using the same.SELECTED DRAWING: None

The invention provides a diaphragm, a preparation method and a lithium secondary battery, the diaphragm comprises a diaphragm base material and a coating covering at least one surface of the diaphragm base material, and the coating contains a bromine-containing compound; the diaphragm base material comprises a positive electrode side facing a battery positive electrode, the coating comprises a first coating covering the positive electrode side, and a bromine-containing compound in the first coating comprises bromide; the diaphragm base material comprises a negative electrode side facing a battery negative electrode, the coating comprises a second coating covering the negative electrode side, and a bromine-containing compound in the second coating comprises at least one of bromate and hyperbromate. The coating containing the bromine-containing compound is arranged on the surface of the diaphragm base material and reacts with the lithium dendrites to convert the lithium dendrites into active lithium ions, so that the lithium dendrites are prevented from puncturing the diaphragm to cause internal short circuit of the battery, the safety performance of the battery is improved, and the service life of the battery is prolonged. And meanwhile, irreversible attenuation of battery capacity caused by loss of active lithium ions is reduced, the capacity retention ratio of the lithium secondary battery is improved, the performance stability is improved, and the service life is prolonged.

The invention discloses a Ni-doped Bi4O5Br2 bifunctional photocatalyst as well as a preparation method and application thereof. The preparation method of the photocatalyst comprises the following steps: dissolving a bismuth-containing compound in ethylene glycol to form a solution A; dissolving a bromine-containing compound in ethanol to form a solution B; dropwise adding the solution B into the solution A to form a solution C; adding a nickel-containing compound into the solution C to form a reaction solution; and transferring the reaction solution into a reaction kettle for heating, and after the reaction is completed, filtering, washing and drying to obtain Ni-doped Bi4O5Br2 powder. According to the invention, Ni is doped into Bi4O5Br2, the Bi4O5Br2 has double functions of LSPR effect and impurity energy level engineering, the LSPR effect of Ni enables infrared light to be converted into hot electrons and heat energy and provides thermodynamic driving force for CO2 activation, and Ni doping also generates impurity energy level which can capture carriers and effectively inhibit recombination of electrons and holes, so that the performance of the Bi4O5Br2 is improved. The carbon dioxide reduction effect of the photocatalyst is remarkably improved through the dual-function synergistic effect.

The present invention discloses a luminescent film and a preparation method and application thereof. The luminescent material comprises the following components: a perovskite material and an organic polymer; wherein the raw materials of the perovskite material comprise the following components: a bromine-containing compound, a compound a and a compound b; wherein the compound a comprises at least one of methylamine lead bromide, cesium lead bromide and methyl ether lead bromide; wherein the compound b comprises at least one of polyethylene oxide, polydimethylsiloxane and thermoplastic polyurethane. The luminescent material of the present invention has low luminescent conditions, can emit light under both white light and ultraviolet excitation light sources, and the light will not decay when leaving the luminescent source.

The invention discloses a synthesis method and application of a pesticide and medical intermediate phenolic hydroxyl group-containing alkenyl oxime ether compound, and the synthesis method of the phenolic hydroxyl group-containing alkenyl oxime ether compound comprises the following steps: carrying out aldol condensation on p-hydroxy benzaldehyde and acetone under the action of alkali to obtain a phenolic hydroxyl group-containing alkenyl ketone compound 1; reacting the compound 1 with dimethyl tert-butyl chlorosilane (TBSCl) under the action of imidazole, so as to obtain a phenolic hydroxyl alkenyl ketone compound 2 protected by a silicon group; reacting the compound 2 with hydroxylamine hydrochloride under the action of alkali to obtain a silicon group protected alkenyl ketoxime compound 3; and carrying out nucleophilic substitution reaction on the compound 3 and a substituted benzyl bromide compound 4 under the action of alkali to prepare a phenolic hydroxyl group-containing alkenyl oxime ether compound 5. The phenolic hydroxyl-containing alkenyl oxime ether compound 5 or the preparation thereof can be used for preventing and treating diseases caused by common plant pathogenic fungi such as oomycetes, phycomycetes and ascomycetes on various crops.

The embodiment provides a reliable method for analyzing bromine compounds. [Solution] The method for analyzing bromine compounds according to the embodiment includes the steps of: measuring the bromine concentration in a sample by X-ray fluorescence analysis; measuring the bromine concentration in a sample by mass spectrometry; and evaluating the difference between the bromine concentration in the sample measured by X-ray fluorescence analysis and the bromine concentration in the sample measured by mass spectrometry.

A treatment liquid for a semiconductor containing a group 6 metal, the treatment liquid containing hypobromite ions. Also provided is a treatment liquid for a semiconductor containing a group 6 metal, the treatment liquid characterized by being formed by adding and mixing at least a bromine-containing compound, an oxidizing agent, a base compound, and water, wherein relative to a total mass, an added amount of the bromine-containing compound is 0.008 mass % or more and less than 10 mass % as an amount of bromine element, and an added amount of the oxidizing agent is 0.1 mass ppm or more and 20 mass % or less; and pH at 25° C. is 8 or higher and 14 or lower. Further provided is a method for producing the treatment liquid for a semiconductor.

The invention discloses a catalyst for producing aromatic polycarboxylic acid through liquid-phase oxidation and application of the catalyst. The catalyst comprises Co salt, Mn salt, IVB group salt, hydroxy carboxylate and a bromine-containing compound, the weight ratio of Co to Mn to IVB group elements to hydroxy carboxylate to Br is 500: (200 to 300): (5 to 20): (10 to 50): (500 to 2000). When the catalyst provided by the invention is used for producing aromatic polycarboxylic acid through liquid phase oxidation, the catalyst has the characteristics of reducing the content of metal impurities in a CTA product and improving the selectivity of the product.

The invention discloses a photosensitizer with high active oxygen generation capacity, the structure of the photosensitizer is shown as a formula (I), D is an electron donor, namely an R-substituted triphenylamine structure, A1 and A2 are electron acceptors and are respectively an X-substituted benzodiazole ring and an onium bromine compound with trimethylamine at the tail end, the two electron acceptors are connected through a double bond, and the structural formula (I) is shown in the description. Compared with a single-acceptor photosensitizer, the double-acceptor photosensitizer connected through double bonds has higher donor-acceptor strength, so that the reduction of delta EST is facilitated, and further, the efficient ROS generation capability is realized. # imgabs0 # is represented by formula (I).

A method for producing furan-2,5-dicarboxylic acid includes an oxidation step 1 and a subsequent oxidation step 2. In the oxidation step 1,5-methylfurfural and an oxygen-containing gas are continuously fed to a reaction container in the presence of a lower aliphatic carboxylic acid, a bromine compound and a metal catalyst to carry out an oxidation reaction under either a condition where the oxygen volume concentration of the oxygen-containing gas is 10% or higher and lower than 15% and the molar ratio of oxygen in the oxygen-containing gas to 5-methylfurfural is 2.5 to 4.2, or a condition where the oxygen volume concentration of the oxygen-containing gas is 15 to 30%, and the molar ratio of oxygen in the oxygen-containing gas to 5-methylfurfural is 1.0 or higher and lower than 2.5. In the oxidation step 2,5-methylfurfural and an oxygen-containing gas are continuously fed to the reaction container to carry out another oxidation reaction under a condition where the oxygen concentration of the oxygen-containing gas and / or the molar ratio of oxygen in the oxygen-containing gas to 5-methylfurfural is higher than that in the oxidation step 1.

To provide a method for producing aryldiadamantylphosphine derivatives, obtained by introducing a diadamantylphosphine group (-P(Ad)2) into a compound having an aryl skeleton, in a highly industrially advantageous manner and in high yield, without the use of a palladium catalyst. [Solution] A method for producing an aryldiadamantylphosphine derivative, comprising: a lithiation step of reacting a bromo compound with alkyllithium to obtain a lithide; and a reaction crystallization step of reacting the obtained lithide with diadamantylchlorophosphine in a solvent to produce and precipitate an aryldiadamantylphosphine derivative.

This invention discloses a catalyst for the liquid-phase oxidation production of aromatic polycarboxylic acids and its application. The catalyst comprises Co salts, Mn salts, Group IVB salts, hydroxycarboxylate salts, and bromine-containing compounds; by weight, the ratio of Co:Mn:Group IVB element:hydroxycarboxylate salt:Br is 500:(200-300):(5-20):(10-50):(500-2000). When used for the liquid-phase oxidation production of aromatic polycarboxylic acids, the catalyst provided by this invention reduces the metal impurity content of CTA products and improves product selectivity.

This invention discloses a high color rendering index (Ra) and long lifespan magnetic ring-coupled plasma light source and its preparation method. The light source is an electrodeless source, comprising a bulb shell, an inorganic ceramic protective layer, a luminescent filler encapsulated inside the bulb shell, a mixed buffer gas, and a magnetic ring coupler fitted outside the bulb shell. The luminescent filler contains sulfur (S), selenium (Se), rare earth triiodine compounds, alkali metal bromine compounds, and alkali metal iodine compounds. The mixed buffer gas is a mixture of argon (Ar) and krypton (Kr) or argon (Ar) and xenon (Xe). The preparation method includes five steps: bulb shell pretreatment, inorganic ceramic protective layer preparation, luminescent filler filling, vacuuming and gas filling, and fusion sealing. This invention achieves ultra-high color rendering indexes (Ra>95, R9>90) by optimizing the luminescent formula and structural design. It contains no toxic substances and meets environmental standards, solving the technical pain points of poor color rendering, short lifespan, and insufficient environmental friendliness of traditional plasma light sources.

The invention relates to the technical field of organic synthesis, in particular to chiral alpha-amino acid and a preparation method thereof, and a synthesis method of a spanishneedles cyclic peptide natural product. N-(diphenylmethylene) glycine tert-butyl ester is used as a substrate, alkyl halide is used as a coupling reagent, copper salt is used as a catalyst, tBuFOXAP is used as a ligand, asymmetric coupling is completed under an alkali and solvent system, high enantioselectivity conversion of unactivated primary / secondary alkyl halide and alpha-carbonyl bromide compounds is achieved, and a series of chiral non-natural alpha-amino acids are prepared. Besides, through a 4 + 3 linear synthesis strategy, the chiral alpha-amino acid 3w is taken as a key raw material, and the total synthesis of the spanishneedles cyclic peptide natural product is completed for the first time through multi-step reaction, so that the substrate range of the chiral alpha-amino acid is expanded, and a new path is provided for synthesis of the cyclic peptide natural product.

This invention belongs to the field of building materials, specifically relating to a preservative for polycarboxylate superplasticizers containing an isothiazolinone composition and its preparation method. The invention comprises, by weight, the following raw materials: 1-15 parts of preservative monomer, 0.5-2.0 parts of bactericidal monomer, 1-2 parts of stabilizer, and 50-90 parts of water. The bactericidal monomer is an isothiazolinone composition, including isothiazolinone derivatives and isothiazolinone quaternary ammonium salts; the preservative monomer is an organic bromine compound. This invention, using organic bromine compounds and isothiazolinone derivatives, provides a preservative for polycarboxylate superplasticizers that exhibits excellent antibacterial properties and tolerance, and can be widely applied in various fields.

To provide an efficient production method for a thiophenium salt bromide useful as a biotin synthesis intermediate.SOLUTION: A method for producing a thiophenium salt bromide, the method comprising a step of obtaining a thiophenium salt bromide of formula (2) by contacting a thiophenium salt derivative of formula (1) with a bromine compound. The bromine compound can be an alkali metal bromine compound such as lithium bromide, sodium bromide, or potassium bromide. The contacting of the thiophenium salt derivative with the bromine compound can be performed in a polar solvent.SELECTED DRAWING: None

The invention discloses a preparation method of a hydrogen bond donor-containing polyion liquid catalyst, which specifically comprises the following steps: mixing a bromine-containing compound, a pyridine organic matter or an imidazole organic matter, reacting for 24 hours in the presence of a solvent at 70-90 DEG C in an N2 atmosphere, cooling to room temperature, carrying out solid-liquid separation, and washing and drying a solid; and mixing the dried product with an initiator, reacting for 24 hours in the presence of a solvent at 70-90 DEG C under N2 atmosphere, cooling to room temperature, carrying out solid-liquid separation, and washing and drying the solid to obtain the hydrogen bond donor-containing polyion liquid catalyst. According to the invention, the hydrogen bond donor-containing polyion liquid catalyst is used for preparing cyclic carbonate through a solvent-free, promoter-free and metal-free cycloaddition reaction of carbon dioxide and epoxide, and high yield and selectivity can be obtained; the method is simple, simple and convenient to operate and mild in reaction condition, and a new method and thought are provided for preparation of the polyion liquid catalyst containing the hydrogen bond donor.

This invention relates to a composite modification method for coating lithium phosphorus, sulfide, and bromine compounds with nano-oxides, and pertains to the field of solid-state electrolyte technology. The method involves drying lithium phosphorus, sulfide, and bromine powder, adding a dispersant, and performing graded ball milling to obtain a lithium phosphorus, sulfide, and bromine substrate powder. Nano-alumina powder is dispersed in anhydrous ethanol, and oleic acid and polyvinylidene fluoride are added to obtain a nano-oxide coating solution. The lithium phosphorus, sulfide, and bromine substrate powder is slowly added to the coating solution to perform an in-situ coating reaction, forming a coating precursor. The coating precursor is then vacuum dried and subjected to low-temperature crystallization to obtain a primary composite modified material. The primary composite modified material is then subjected to secondary ball milling and sieving to obtain a nano-oxide-coated lithium phosphorus, sulfide, and bromine compound composite modified material. This invention can significantly improve the room temperature ionic conductivity, water and oxygen stability, and battery cycle performance of the material.

This invention provides a catalyst for the liquid-phase oxidation of terephthalic acid and its application. The catalyst comprises a cobalt salt, a zirconium salt, a bromine-containing compound, and an auxiliary agent; the mass ratio of Co, Zr, Br, and the auxiliary agent in the catalyst is 500:(250–350):(500–1200):(30–80); the auxiliary agent is selected from compounds with the structure shown in formula (1), wherein R is selected from C1–C4 alkyl groups. The catalyst for the liquid-phase oxidation of terephthalic acid provided by this invention has a low Br content and good catalytic performance; its application in the liquid-phase oxidation of p-xylene to terephthalic acid can reduce the impurity content in the product and effectively improve the product yield.

This invention belongs to the field of membrane material technology and discloses a high-flux, acid-resistant polyquaternary ammonium nanofiltration membrane and its preparation method. The method includes: (1) coating an aqueous solution containing cyclic tertiary nitrogen oligomers onto a porous support substrate membrane, wetting it, and then removing excess liquid; (2) subsequently coating the surface of the material obtained in step (1) with a hexane solution containing benzyl bromide, wetting it so that the tertiary nitrogen atoms on the cyclic tertiary nitrogen oligomers undergo a quaternization reaction with the benzyl bromide, gradually forming a dense separation membrane at the water-hexane interface; after the reaction is completed, it is dried to obtain the nanofiltration membrane. The nanofiltration membrane prepared by this invention overcomes the disadvantages of traditional polyquaternary ammonium membranes, which require several hours to prepare and have low permeability. A defect-free nanofiltration separation membrane can be prepared in just 1 minute. After soaking in 1M sulfuric acid for 30 days, it can still maintain high permeability and rejection rate, showing good application prospects.

There is provided a method for producing high-purity bromine pentafluoride while leaving a less amount of an unreacted fluorine gas. The method for producing bromine pentafluoride includes a reaction step of feeding a bromine-containing compound, which is at least one of a bromine gas and bromine trifluoride, and a fluorine gas to a reactor to give a (fluorine atom):(bromine atom) molar ratio, that is, F / Br of 3.0 or more and 4.7 or less and reacting the bromine-containing compound and the fluorine gas to each other to obtain a reaction mixture containing bromine pentafluoride and bromine trifluoride; and a separation step of separating bromine pentafluoride and bromine trifluoride in the reaction mixture from each other.