14 results about "Aromatic ketone" patented technology

The invention relates to environment-friendly hydrophobic ink and a preparation method thereof, and belongs to the technical field of water-based ink. A copolymerization modifier capable of being combined in a water-based polyacrylate emulsion in an initiation polymerization mode in the stage of preparing the modified water-based polyacrylate emulsion is prepared, and an o-hydroxy aromatic ketone structure in the copolymerization modifier can endow water-based ink with lasting ultraviolet absorption performance; the trifluoromethyl structure can reduce the surface energy of the water-based ink, and the benzimidazole ring structure can form stable coordinate bonds with metal ions, so that the bonding performance of the water-based ink and a metal substrate is enhanced; when the copolymerization modifier is used for modifying the water-based polyacrylate emulsion, the long-term performance, the hydrophobic and oil-resistant performance and the adhesion performance on the surface of a metal base material of the finished water-based ink can be effectively improved.

The invention discloses a mutant of aromatic dioxygenase CpuADO and application of the mutant. The amino acid sequence of the mutant of the aromatic dioxygenase CpuADO is as shown in SEQ ID NO: 2 or SEQ ID NO: 3. The aromatic dioxygenase CpuADO is found to have broad-spectrum substrate conversion capacity and can catalyze various lignin monomer derived aromatic olefin substrates to generate corresponding aromatic aldehyde or aromatic ketone products, and the catalytic efficiency of two mutants obtained after site-directed mutagenesis of the aromatic dioxygenase CpuADO is further improved; the problems that existing aromatic dioxygenase is poor in adaptability to lignin monomer derived aromatic olefin substrates, narrow in substrate spectrum and low in catalytic efficiency are solved, high-valued utilization of multiple types of lignin monomer derived aromatic olefins is facilitated, and an efficient novel enzyme tool is provided for green biological oxidation conversion of lignin monomer derived aromatic compounds.

This invention discloses a direct repair and regeneration method for waste lithium iron phosphate cathodes based on a two-electron lithiation reagent, comprising the following steps: (1) disassembling the recycled waste lithium iron phosphate battery after complete discharge, separating and collecting the cathode active material; (2) adding an aromatic ketone dilithium reagent to the cathode active material, stirring and reacting for 1-4 hours, then centrifuging, washing, and drying to obtain a lithified regenerated lithium iron phosphate cathode; wherein: the molar ratio of lithium in the aromatic ketone dilithium reagent to the molar ratio of lithium missing in the cathode active material is ≥1; the aromatic ketone dilithium reagent is composed of aromatic ketone dilithium and an organic solvent; the molar ratio of aromatic ketone molecules to lithium in the aromatic ketone dilithium is 1:2. This invention can achieve twice the lithiation efficiency with the same amount of aromatic chemical reagent consumption, which is beneficial to reducing the material input in the repair and regeneration process. Moreover, the electrochemical performance of the regenerated layered lithium iron phosphate cathode material obtained by this invention is comparable to that of commercial lithium iron phosphate cathodes.

The application discloses a kind of offsite aromatic ketone substituted heptamethine cyanine dyes and its synthesis method and application.The offsite aromatic ketone substituted heptamethine cyanine dye is substituted by heptamethine cyanine dye methine chain, changes the electronic cloud arrangement of cyanine dye, so that the absorption and emission wavelength of dye all have blue shift, has good intersystem crossing ability, can quickly pass through cell membrane, can be concentrated in cell mitochondria, can detect physiological process using the change of cell mitochondria, and can produce a large amount of active oxygen after illumination, cause cell death, realize the purpose of photodynamic therapy.The application can be applied to the field of photocatalysis, as near-infrared region luminescent material, biological marker probe, photodynamic therapy, water photolysis hydrogen production and the field of biological sensing.

This invention discloses a self-lubricating polyaryletherketone containing a long-chain fluorinated end-capping agent, its preparation method, and its application. The long-chain fluorinated end-capping agent has the structure shown in general formula I, where R is C4~C6. 10 The end-capping agent is a straight-chain or branched perfluoroalkyl group; the end-capping agent is prepared by a substitution reaction of a fluoroalkyl compound and a hydroxyl-containing aromatic ketone compound dissolved in a polar solvent under alkaline conditions. This invention utilizes the end-capping agent to prepare polyaryletherketones with superhydrophobic surfaces and excellent self-lubricating properties through a one-step polycondensation process. This material has a simple preparation process, readily available raw materials, and low cost, combining high performance and economy. The polyaryletherketone has broad application prospects in aerospace, automotive manufacturing, and electronics and electrical fields.

The application discloses a kind of palladium catalytic preparation 2-fluoro-1,2-diphenyl ethanone compound and its product, belong to organic synthesis technical field, the compound structure is as shown in formula I, its preparation method includes the following steps: (1) palladium catalyst, ligand, base and solvent are mixed uniformly, then join fluorine-containing block and bromoaromatic hydrocarbon are stirred, after reaction, quenching by water, again after extraction, washing, liquid separation, drying, remove solvent, obtain crude product;(2) the crude product is separated and purified by column chromatography, to obtain the 2-fluoro-1,2-diphenyl ethanone compound.The application also discloses the 2-fluoro-1,2-diphenyl ethanone compound prepared by the above preparation method.The application is constructed fluorine-containing aromatic ketone by fluorine-containing block, without directly using fluorination reagent, easy to operate, high yield;And, the application is suitable for a variety of bromoaromatic hydrocarbon substrates, and the universality is wide.

The present invention relates to a two-phase composition comprising an oil phase comprising (a) at least one oil, and an aqueous phase comprising: (b) at least one aromatic ketone compound represented by formula (I); (c) at least one polyglyceryl fatty acid ester; and (d) water. The composition according to the present invention has two visually distinct phases when not being mixed. However, the composition according to the present invention can be transformed into a single phase composition when being mixed. The single phase composition, such as an emulsion, can provide good cosmetic effects such as good make-up removability, without discomfort. The single phase composition can return to a two-phase composition with a clean interface between the two re-formed phases.

The utility model relates to the technical field of aromatic ketone compound separation discloses a kind of aromatic ketone compound separation is with coupling rectifying column device, including tank body, the inside of tank body is fixed with one tray, and the top and bottom of the tray are slidably provided with another tray, by setting multiple trays and its adjustable spacing structure, so that device meets industrial separation demand, with spacing adjustment function under experimental condition simultaneously;Combining the rotary scraper system driven by top first servo motor, three scrapers can remove residue on the top of tray in real time, to avoid the separation efficiency reduction caused by aromatic ketone coking blockage;In addition, bidirectional threaded rod cooperates with sliding block structure, can be adjusted up and down under the premise of keeping the stability of tray, cooperate the scraper of spring support, realize the surface of the tray after automatic fitting adjustment, to improve the adaptability, stability and equipment service life of rectification process.

This invention belongs to the field of organic electrochemical synthesis and relates to a method for preparing aromatic ketone compounds by continuous flow electrochemical microchannel oxidation of alkyl aromatic hydrocarbons. Alkyl aromatic compound I is mixed with an electrolyte, water, and a solvent to obtain a mixture. The mixture is then pumped into a continuous flow electrochemical microchannel reactor of an electrochemical microchannel reaction apparatus to carry out an electrochemical reaction, yielding aromatic ketone compound II. This invention utilizes green electrochemical electrons as the oxidant, eliminating the need for additional metal or non-metal catalysts and widely used oxidants (such as O3, KMnO4, etc.). The reaction system is neutral, the process is simple, and the amount of post-treatment wastewater is minimal.

The present invention provides: a compound represented by general formula (1); a photoacid generator and an acid-reactive composition which contain the compound; and an acid generation method using the compound.　In formula (1), Ar11 to Ar13 each represent an aromatic hydrocarbon ring group having a specific substituent; R13 represents a condensed polycyclic aromatic hydrocarbon ring group or a condensed polycyclic aromatic heterocyclic group which may have a specific substituent, a group having an aromatic ketone skeleton, or a group having a conjugated bonding group with an aromatic hydrocarbon ring group or the like; R11 and R12 each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; Z11 represents an oxygen atom or the like; m1 and p1 are each 0 or 1 (however, m1 is 0 in cases where n1 is 0); n1 is an integer of 0-4; X11 represents a boron atom or the like; and Y11 represents an organic onium cation. However, in cases where R13 is a specific group such as a condensed polycyclic aromatic heterocyclic group and the hetero atom is a bond to Z11, forms wherein m1 = n1 = 0 and forms wherein m1 = 1 are excluded.

A composition, preferably used for caring keratin materials, comprises (i) at least one nonionic polysaccharide selected from homopolymers of mannose, copolymers of mannose and glucose, copolymers of mannose and galactose, and combinations thereof; (ii) at least one ionic polysaccharide selected from xanthan gum, carrageenan, gellan gum, and combinations thereof; and (iii) at least one preservative selected from chlorophenylglycerol ether, aromatic ketone compounds, and combinations thereof, wherein the weight ratio of at least one nonionic polysaccharide to at least one ionic polysaccharide is at least 1:5. The above composition can be used in non-therapeutic methods for caring keratin materials.

The application discloses a mutant of aromatic dioxygenase CpuADO and application thereof, and the amino acid sequence of the mutant of the aromatic dioxygenase CpuADO is shown in SEQ ID NO:2 or SEQ ID NO:3. It is found by the application that the aromatic dioxygenase CpuADO has wide-spectrum substrate conversion capacity, can catalyze various lignin monomer derived aromatic olefin substrates to generate corresponding aromatic aldehyde or aromatic ketone products, and the catalytic efficiency of two mutants obtained after site-directed mutagenesis of the aromatic dioxygenase CpuADO is further improved. The problems of poor adaptability, narrow substrate spectrum and low catalytic efficiency of existing aromatic dioxygenases to lignin monomer derived aromatic olefin substrates are solved, the high-value utilization of various types of lignin monomer derived aromatic olefins is facilitated, and an efficient new enzyme tool is provided for green biological oxidation and conversion of lignin monomer derived aromatic compounds.

The invention discloses a preparation method and application of a Ni-Eu-DPA three-dimensional coordination framework crystal material, and relates to a preparation method and application of a three-dimensional coordination framework crystal material. The problems that in the existing aromatic ketone alpha-H deuteration field, the photocatalytic light excitation state service life is short, the energy utilization rate is low, the reaction selectivity needs to be improved, the deuterium source is expensive, and the conditions are harsh are solved. The preparation method comprises the following steps: 1, dissolving Ni (ClO4) 2.6 H2O in water, then adding dipicolinic acid, heating and stirring to obtain a system A; 2, Eu (NO3) 3.6 H2O is dissolved in water, then picolinic acid is added, heating and stirring are conducted, and a system B is obtained; and 3, mixing the system A and the system B, transferring the mixture into a polytetrafluoroethylene reaction kettle for solvothermal reaction, and naturally cooling to room temperature to separate out light green flaky crystals. The photocatalyst is applied to the selective deuteration reaction of aromatic ketone alpha-H.

The invention relates to the technical field of electroplating, in particular to Schiff base, a preparation method thereof and application of the Schiff base as a galvanization additive. The Schiff base is characterized in that the Schiff base is applied to the field of electroplating, and the structural general formula of the Schiff base is R1-N = CR2-R3, wherein R1 is any one of an aliphatic group, an aromatic group, an aminoacyl group, an alkylene diamine group, a nitrogen-containing heterocyclic group or a high-molecular polymer group; r2 is H or an organic group; when R2 is H, R3 is any one of a phenyl derivative, a cinnamyl derivative, an aromatic heterocyclic group or substituted phenyl; when R2 is an organic group, R3 and R2 are aromatic ketone groups. The Schiff base provided by the invention can adapt to a strong alkaline environment through the synergistic effect of the imine group and an affiliated group, effectively promotes the displacement capacity and deep plating capacity of a plating solution in the galvanizing process, improves the final galvanizing effect, and has good application value.