Abstract: Provided in the present invention are a coenzyme Q10 microemulsion, a preparation method therefor and the use thereof. The coenzyme Q10 microemulsion is prepared from components comprising coenzyme Q10, a carrier oil, an anti-crystallization agent, a lipophilic emulsifier, a hydrophilic emulsifier, a co-emulsifier and water. The microemulsion has a particle size DV(90) of between 20 nm and 80 nm, and is clear, transparent, free of demulsification and high in bioavailability, can be stably stored for a long time at normal temperatures and in extreme temperature environments. In addition, the microemulsion is suitable for the pharmaceutical, cosmetic and food fields, especially for beverages, oral liquids and other products. Also provided in the present invention is a method for preparing the coenzyme Q10 microemulsion, which is simple in equipment, low in cost and easy in operation.

Abstract: A touch panel and a touch display are disclosed. The touch panel mainly comprises a light transmissive substrate and two sensing units. The two sensing units are disposed oppositely through the light transmissive substrate. A mesh width of a metal mesh in the two sensing units is large, which can increase a variation of capacitance value and improve the touch sensitivity. In addition, an angle between metal lines with sensing function is configured in a random manner under a certain condition to reduce an area of nodes, thus a rounding effect at the nodes can be effectively reduced or eliminated. The metal meshes of the two sensing units disposed oppositely are staggered with a non-conductive node-free pattern to form a staggered pattern with irregular polygons, so that no interference fringes would be generated when the touch panel is used together with display panels of various mainstream sizes.

Abstract: The present invention discloses a method for preparation of vitamin and carotenoid powder; the vitamin and carotenoid powder comprises vitamin, carotenoid microcapsule and physical gel protection film covered on the surface of the vitamin and carotenoid microcapsule; the physical gel protection film is made from super-molecular system; the super-molecular system comprises the following constituents of parts in weight: vegetable oil: 6-30 parts; gel: 0.5-3 parts and antioxidant: 0.5-3 parts. The hot super-molecular solution is sprayed on the surface of cold vitamin and carotenoid microcapsule during preparation to form a specific 3D network structure that is used to bind the liquefied vegetable oil to form a physical gel protection film; the physical gel protection film has improved product storage stability as well as the its stability for application in feedstuff, food and health care products.

Abstract: A porous polymer has a pore volume of 0.3 to 2.5 cm3/g and comprises a pore having a first pore diameter and a pore having a second pore diameter. A ratio of pore volume of the pore having a first pore diameter to pore volume of the pore having a second pore diameter is 1 to 10:1. The porous polymer is obtained by self-polymerization or copolymerization of at least one of the phosphorus ligands, and phosphorous content of the porous polymer is 1 to 5 mmol/g. The porous polymer-nickel catalyst made of the porous polymer has a significant increase in water resistance, which may reduce the consumption of phosphorus ligands, eliminating the steps of removing water from raw materials and reaction system water control, which greatly saves process equipment investment. When used in the preparation of adiponitrile from butadiene, it has high catalytic activity, high reaction selectivity, and high linearity.

Abstract: A stable carotenoid microcapsule having high bioavailability and a preparation method therefor. The method includes the following steps: a) mixing carotenoid crystals with an organic solvent, and dissolving the mixture to obtain a carotenoid solution; b) introducing the carotenoid solution and a grease into a dispersion system to fully disperse carotenoid into the grease, and vaporizing the organic solvent to obtain a carotenoid-containing dispersion liquid; c) mixing the carotenoid-containing dispersion liquid and a protective colloid aqueous solution, and emulsifying the mixture to obtain an emulsion; and d) performing spray granulation and drying to obtain a carotenoid microcapsule.

Abstract: Provided are a method and device for preparing adiponitrile. The method of the present disclosure comprises the steps of a first hydrocyanation reaction, an isomerization reaction and a second hydrocyanation reaction, wherein online Raman spectroscopy is used for detecting the content of a specific component in the system; and the reaction conditions are regulated based on the detection results, so as to achieve precise control of the materials in each step of the reaction system. The method of the present disclosure can reduce an amount of butadiene, thereby reducing the subsequent energy consumption needed for recycling butadiene and equipment investment after reaction; by monitoring the content of hydrocyanic acid in real time, the residue of hydrocyanic acid is reduced to a lower level, and the operation safety and the stability of a catalyst during reaction are improved; and the loss of the catalyst is reduced.

Abstract: The present disclosure relates to an additive used in a methionine preparation process, and a methionine preparation method. The additive provided by the present disclosure is a mixture containing components A, B, and C; component A has a structure represented by the following general formula (1); component B has a structure represented by the following general formula (2); component C is silicone oil; RCON(CH3)CH2CH2SO3Na (1). The methionine preparation method provided in the present invention comprises subjecting methionine to crystallization and/or recrystallization in the presence of the additive provided by the present disclosure. The additive provided by the present disclosure results in uniform emulsification, has good stability, can be used stably for a long time, and is suitable for a continuous crystallization process. The prepared methionine crystal has a good crystal form, a large bulk density, and good flowability.

Abstract: A sulfur-containing compound and a halogenated aromatic compound are used as raw materials, with an alkaline compound and a fatty acid as polycondensation aids to carry out a polycondensation reaction. After purification treatment, a primary polyphenylene sulfide is obtained which then reacts with a chain extender at high temperature to form a high molecular weight polyphenylene sulfide resin. A preparation method has the advantages of being high yield, low cost, and capable of selectively and controllably preparing polyphenylene sulfide resins with different melt viscosities and molecular weights, and the obtained polyphenylene sulfide resins have excellent heat resistance.

Abstract: A preparation method of a polyphenylene sulfide resin, and a polyphenylene sulfide resin prepared by the method using a sulfur-containing compound, an alkaline substance and p-dichlorobenzene as raw materials, a fatty acid as a polycondensation aid to carry out a polycondensation reaction. After purification treatment, a primary polyphenylene sulfide is obtained, which then reacts with a terminal-group adjusting agent at a high temperature to generate the polyphenylene sulfide resin resulting in high yield and low cost. The prepared polyphenylene sulfide resin has high reactivity, high melting crystallization temperature and excellent thermal stability. The resulting polyphenylene sulfide resin can be directly used for extrusion and injection molding.

Abstract: The present invention relates to a synthesis method and synthesis reactor of high-selectivity 2-methylallyl chloride by taking isobutylene and chlorine gas as raw materials and performing a gas-phase chlorination reaction in a microchannel reactor with a cooling surface. The isobutylene and the chlorine gas are reacted in a T-shaped microchannel reactor, and the mixing speed is extremely fast. Meanwhile, the huge heat exchange area per unit volume can ensure that the reaction proceeds stably at a substantially constant temperature and has good controllability. Therefore, side reactions caused by excessive local temperature can be effectively suppressed, the reaction selectivity is high, and no coking phenomenon occurs.

Abstract: The present invention relates to a method for preparing 2-methylallyl chloride from 1,2-dichloroisobutane. The method is characterized in that 1,2-dichloroisobutane and a sodium hydroxide aqueous solution are used as raw materials; reactive rectification is performed in a combined rectifying tower to eliminate hydrogen chloride so as to obtain 2-methylallyl chloride. A plate tower is provided at the lower part of the combined rectifying tower; a packing tower is provided at the upper part of the combined rectifying tower; an inner reflux condenser is provided at the top of the combined rectifying tower. The sodium hydroxide aqueous solution is added from a first plate of the plate tower; and 1,2-dichloroisobutane is added from the middle part of the plate tower. The method has the advantages that the raw material 1 and 1,2-dichloroisobutane is fully converted; the selectivity of the 2-methylallyl chloride is high.

Abstract: A hydroformylation catalyst, a preparation method thereof and a use thereof. The hydroformylation catalyst including an active component and a carrier carrying the active component, wherein the active component includes a transition metal as a center atom, and a polyhydroxy aromatic ring group bonded to the transition metal; and the transition metal and the polyhydroxy aromatic ring groups are bonded by at least one of metal-hydroxyl coordination bond and at least one of metal-oxygen covalent bond, and the active component has at least one of the metal-hydroxyl coordination bond and at least one of the metal-oxygen covalent bond.

Abstract: A method for preparing sodium taurine as a taurine intermediate is provided in the present disclosure. The method comprises the following steps: providing sodium hydroxyethyl sulfonate and an ammonia source; and placing the sodium hydroxyethyl sulfonate and the ammonia source in an aminolysis reactor for an aminolysis reaction to obtain a mixture containing sodium taurine as a taurine intermediate, wherein the molar ratio of ammonia in the ammonia source to the sodium hydroxyethyl sulfonate is greater than or equal to 25:1. A method for preparing taurine is further provided.

Abstract: The present disclosure discloses a semi-aromatic polyamide and a preparation method therefor. The semi-aromatic polyamide is obtained by polymerization reaction using a diamine, a dibasic acid and a monoacid as main raw materials while adding a special end-capping agent. The semi-aromatic polyamide prepared according to the present disclosure has good thermal stability, a yellowness index of less than 20, a glass transition temperature of 90° C. or above, and a melting point of 300° C. or above, and can be applied to spare parts for fuel pipelines in automobiles, and electronic and electrical industries such as LED panels.

Abstract: A touch panel and a touch display are disclosed. The touch panel mainly comprises a light transmissive substrate and two sensing units. The two sensing units are disposed oppositely through the light transmissive substrate. A mesh width of a metal mesh in the two sensing units is large, which can increase a variation of capacitance value and improve the touch sensitivity. In addition, an angle between metal lines with sensing function is configured in a random manner under a certain condition to reduce an area of nodes, thus a rounding effect at the nodes can be effectively reduced or eliminated. The metal meshes of the two sensing units disposed oppositely are staggered with a non-conductive node-free pattern to form a staggered pattern with irregular polygons, so that no interference fringes would be generated when the touch panel is used together with display panels of various mainstream sizes.

Abstract: The present disclosure discloses a preparation method for 4-phenylthio-benzenethiol. The preparation method comprises the following steps: subjecting phenyl sulfide as a raw material to a halogenation reaction to obtain 4-halophenyl sulfide; subjecting the 4-halophenyl sulfide to a sulfhydrylation reaction to obtain a 4-phenylthio-phenylthiolate; and subjecting the 4-phenylthio-phenylthiolate to acidification. The preparation method of the present disclosure avoids the use of materials such as thiophenol which pollutes the environment, and realizes efficient recycling of the reaction materials, solvents, water and the like. The preparation method of the present disclosure is a green process for the synthesis of 4-phenylthio-phenylthiol without organic waste, waste acid and waste water discharge.

Abstract: The present invention relates to a method for preparing 2-methylallyl chloride from 1,2-dichloro-tert-butane. The method is characterized in that 1,2-dichloro-tert-butane and a sodium hydroxide aqueous solution are used as raw materials; reactive rectification is performed in a combined rectifying tower to eliminate hydrogen chloride so as to obtain 2-methylallyl chloride. A plate type tower is provided at the lower part of the combined rectifying tower; a packing tower is provided at the upper part of the combined rectifying tower; an inner reflux condenser is provided at the top of the combined rectifying tower. The sodium hydroxide aqueous solution is added from a first plate of the plate type tower; and 1,2-dichloro-tert-butane is added from the middle part of the plate type tower. The method has the advantages that the raw material 1 and 1,2-dichloro-tert-butane is fully converted; the selectivity of the 2-methylallyl chloride is high.

Abstract: The present disclosure relates to a method for preparing isophorone diamine by means of a hydrogenation reduction of isophorone nitrile imine. The hydrogenation reduction is continuously carried out in a multi-stage bubble column reactor loaded with a supported alkaline cobalt-based catalyst, wherein isophorone nitrile imine is successively in countercurrent contact with hydrogen in each stage of the reactor to carry out a hydrogenation reduction reaction, so as to obtain the isophorone diamine. The preparation method solves the problem of back-mixing, and further improves the conversion rate and the cis/trans ratio of the product.

Abstract: A recombinant microorganism, a preparation method thereof and its application in the production of coenzyme Q10. Specifically, the present disclosure provides a method of exogenously introducing a gene encoding the global regulatory protein irrE to construct a recombinant microorganism. This recombinant microorganism is suitable for producing coenzyme Q10 by fermentation method, and is particularly suitable for producing oxidized coenzyme Q10. The recombinant microorganism of the present disclosure has stress resistance, and has good tolerance against harsh environments including high osmotic pressure and high redox potential, thus making it possible to significantly increase the yield of coenzyme Q10, especially the yield of oxidized coenzyme Q10.

Abstract: Provided by the present disclosure are a method and a device for preparing 2-hydroxy-4-methylthiobutyric acid and intermediates thereof; the intermediates for preparing 2-hydroxy-4-methylthiobutyric acid comprise 3-methylthiopropionaldehyde and 2-hydroxy-4-methylthiobutyronitrile. The method for preparing 2-hydroxy-4-methylthiobutyric acid provided by the present disclosure comprises: step (1), a step of reacting acrolein with methyl mercaptan to prepare 3-methylthiopropionaldehyde; step (2), a step of reacting 3-methylthiopropionaldehyde with hydrocyanic acid to prepare 2-hydroxy-4-methylthiobutyronitrile; and step (3), a step of hydrating 2-hydroxy-4-methylthiobutyronitrile by using sulfuric acid and then hydrolyzing to prepare 2-hydroxy-4-methylthiobutyric acid; wherein in steps (1), (2) and (3), the reaction status of the materials is detected online, and the proportions of the materials are controlled according to the detection results such that reactions are performed completely.