37results about How to "Uniform and stable reaction" patented technology

The invention discloses a preparation method of the 9, 10-dihydro-9-oxa-10-phosphahenanthrene-10-oxide and the derivatives DDP, DDP-EG and DOPO-BQ. The invention has three steps to synthesize the DOPO: (1) preparation of CDOP, the O-phenylphenol (OPP) reacts with the Phosphorus trichloride (PCl3) with ZnCl2 as the catalyst. (2) purification of CDOP, vacuum distillation is carried out. (3) DOPO with high purity and yield is gained through the hydrolysis and crystallization. The preparation materials comprises the O-phenylphenol, the Phosphorus trichloride, the toluene, the alcohol, the deionized water, the itaconic acid, the ethylene glycol, the p-benzoquinone and the acetone. The invention simplifies the process conditions, improves the product purity with good production stability and repeatability. The purity of the product reaches over 99.0 per cent, the content of the chloride is below 50ppm, the OPP is about 0.01 per cent, the color is about 10 (10 per cent solution of acetone), the zinc-ion is less than 10ppm. The preparation method of the derivatives DDP, DDP-EG, DOPO-BQ is simple, good in stability and high in yield.

The invention relates to a manufacturing method of a netted catalyst for degrading the organic pollutant in wastewater by photocatalysis and a wastewater treating device. The manufacturing method comprises: using the wire net plated with nickel as a carrier, coating a catalyst for solidification, wherein the catalyst mixed liquid includes nano TiO2, acetone, epoxy resin, solidifying agent and appropriate plasticizer, soaking in the acetone solution. A case of the treatment device is provided with a plurality of independent deflecting chambers connected end-to-end in turn, two ends of which are provided with a water inlet and a water outlet. A plurality of solid netted bodies solidified with the catalyst are overlapped at intervals in the deflecting chamber. A through hole is opened in the middle of the solid netted body. An ultraviolet light source is inserted in the through hole. An aeration pipe is arranged on the bottom of the deflecting chamber. The device can deeply degrade the organic matter in wastewater.

The invention discloses a horizontal reactor of moving bed type, which produces propylene with oxygenated chemicals as raw material. The reactor includes a shell. One transverse end of the shell is provided with a raw material inlet and the other end is provided with a production outlet. A polyporous separator is arranged in the shell, which separates the internal space of the shell into at least four horizontal areas. The two areas at the end part of the shell are respectively communicated with the raw material inlet and the production outlet. The rest areas are one reaction area and a cooling area with an interval arranged in the middle. The shell corresponding to the upper end and the lower end of the reaction area is respectively provided with a catalyst inlet and a catalyst outlet. The shell corresponding to the cooling area is provided with a cooling liquid inlet. The horizontal reactor of moving bed type of the invention has simple structure, easy equipment design and manufacture, easy maintenance and convenient operation. The reaction can be controlled easily and the reaction condition can be kept well.

The invention belongs to the field of high polymer materials and particularly relates to anorganosilicone copolyester. The organosilicone copolyester is formed by copolymerizing aromatic dicarboxylic acid, aliphatics dihydric alcohol and organosilicone oligomer, the condensed structural formula of the organosilicone oligomer is as shown in the specifcation, wherein in the formula, R1, R2, R3, R4, R and R' are respectively alkyl of C1-C10 or alkoxyl of C2-C10; R'' is hydroxyl, carboxyl or amino, preferably hydroxyl; Rf is hydroxyl; and the value of n ranges from 1 to 106. The organosilicone copolyester is higher in molecular weight, has excellent thermal stability, mechanical property and organic solvent resistance, and is beneficial to the forming of fibers.

The present invention provides an agglutination immunoassay, wherein the agglutination of insoluble carrier particles such as latex are stabilized and uniformized to give good reproducibility, and a reagent therefor. In the agglutination immunoassay which comprises allowing an antigenic substance in a sample to bind to insoluble carrier particles carrying substantially neither antigens nor antibodies thereon, and allowing an antibody or an antibody complex which reacts specifically to the antigenic substance to bind to the antigenic substance to give a selective agglutination of the insoluble carrier particles, a homopolymer prepared by polymerization of a monomer such as 2-methacryloyloxyethyl phosphorylcholine having a phosphorylcholine group and a vinyl group, or a copolymer prepared by polymerization of a monomer having a phosphorylcholine group and a vinyl group, with a monomer having a vinyl group such as n-butyl methacrylate is used.

The invention relates to the technical field of troponin I detection, in particular to a troponin I detection reagent with high sensitivity through latex enhanced turbidimetric Immunoassay. The reagent comprises the following main components: a buffer solution, zinc chloride, Thesit, EMULGEN-A90, and a nitriloriacetic acid (NTA) preservative; a reagent R2 comprises the following main components: a buffer solution, triton-308, bovine serum albumin (BSA), a preservative, TnI antibody-coated latex particles and the like. The three surfactants, namely Thesit, EMULGEN-A90 and triton-308 are added, and the latex particles with appropriate particle sizes are selected, so that the reaction sensitivity is greatly improved, and the reagent is simple in product configuration, low in cost and very suitable for clinical expansion in large scale.

The invention relates to a photocatalytic degradation treatment device of the wastewater with organic pollutants. The treatment device contains a box. The treatment device is characterized in that the inside of the box is provided with a plurality of relatively independent baffled chambers which are connnected end to end; the both ends of the box are separately provided with a water inlet and a water outlet; in each baffled chamber, a plurality of three-dimensional reticular bodies with immobilized catalyst are stacked at intervals, the center of each three-dimensional reticular body is provided with a through hole, a ultraviolet light source is inserted in the through hole, and an aeration pipe is arranged at the bottom of the baffled chambers; and each three-dimensional reticular body is formed by stacking several layers of reticular carrier, the space between the layers of reticular carrier is 1-3 times of the reticular width, the periphery of the reticular carrier is bent to the bottom surface relatively, the center of the reticular carrier is provided with an I-shaped notch, and the notch is bent to the bottom surface. An illumination device is inserted in the notch. By adopting the device of the invention, the organic matter in wastewater can be decomposed to a large extent.

The invention belongs to the technical field of mining plugging and sealing materials, and particularly relates to a mining high-antistatic composite spraying wind plugging material and a preparation method thereof. The mateiral comprises a component A and a component B, wherein the component A is prepared from water glass, deionized water, a CUCAT-WN catalyst, glycerol, alkanolamide and ethoxylated alkyl polyamine; and the component B is prepared from polymethylene polyphenyl polyisocyanate, a polyurethane prepolymer, glycerol triacetate, a 141b foaming agent, a foam stabilizer L-6900, super absorbent resin, polyacrylamide and sodium alginate. The component A and the component B are respectively prepared, the component A and the component B are sprayed onto a coal and rock mass or a wall body to be sealed by a spraying machine at normal temperature, and repeated spraying is conducted for a plurality of times to a corresponding thickness, thereby obtaining the mining high-antistatic composite spraying wind plugging material. The material is mainly used in underground coal mines and has excellent and long-acting antistatic performance and excellent airtight use performance, and underground safety accidents caused by discharge due to accumulation of local electrostatic charges in the underground coal mines are prevented.

The present invention discloses a novel method for pre-bleaching and brightening of wood. The method comprises the following steps: (1) adjustment of wood moisture: subjecting fresh wood to natural drying at first and then to drying by rapid hot air; (2) introducing tap water into a pressure reaction tank, heating the tap water to 50 to 120 DEG C; and 3) successively injecting an aqueous solutionof an oxidizing agent, a buffering agent and a reducing agent into the pressure reaction tank, and carrying out stirring for a rapid reaction so as to achieve high whiteness and surface brightening effect of the wood. According to the invention, a novel catalytic system is used for pre-bleaching of the wood, so the color of the wood is brightened and whitened in a short period of time and looks fresh and agreeable, processing cost is greatly reduced, and a foundation is laid for later flaking, peeling, deep dyeing and other functional processing of the wood.

The invention provides a horizontal-type fixed bed reactor which is used for producing propylene with oxygen-containing compound as the raw material. The reactor comprises a casing, a raw material inlet is arranged at one transverse end of the casing, a product outlet is arranged at the other end, a porous separating part is arranged inside the casing, and separates the internal space of the casing into at least four transverse areas, two of the areas which are positioned at the ends of the casing are respectively communicated with the raw material inlet and the product outlet, and other areas are a reaction area and a cooling area which are arranged at intervals; a cooling fluid inlet is arranged on the casing corresponding to the cooling area. The horizontal-type fixed bed reactor has the advantages that the structure is simple, the design, the manufacture and the maintenance of the equipment are easy, the operation is convenient, the reaction is easy to control, and good reaction condition is easy to maintain.

The present invention provides a fluid mixing apparatus having a numbering-up mechanism that distributes plural kinds of fluids and concurrently performs multiple mixing or reactions, comprising: a rectifying section having a plurality of annular channels that rectify the plural kinds of fluids into respective concentric annular flows; a distribution section having a plurality of distribution channels that distribute the plural kinds of fluids rectified by the rectifying section into a plurality of flows; a converging section having a plurality of converging channels that converge different kinds of fluids among the plural kinds of fluids distributed by the distribution section; and a mixing / reaction section having a plurality of mixing / reaction channels that cause mixing or reaction of the plural kinds of fluids converged by the converging section, wherein a plurality of pressure loss increasing devices are provided in the distribution channels.

The invention discloses a method for preparing a polypropylene coating by modifying T30S granules. The method comprises the steps of carrying out for compound initiation by adopting 2, 5-dimethyl-2,5-di(tert-butyl peroxy) hexane and dibenzoyl peroxide, and degrading and modifying the polypropylene T30S granules to obtain the polypropylene coating with the melt flow rate of 15-40g / 10min. The method is even and stable in reaction, high in product quality and good in product stability. The method has the characteristics of being economical, low in energy consumption, high in yield, higher in melt strength and free from peculiar smell.

The invention an acrylamide ultrahigh molecular weight polymerization reaction initiator, which consists of 20-50 parts of methyl isobutyl ketone, 10-40 parts of 4-heptanone, 3-10 parts of dimethylfomamide, 10-30 parts of azobisvaleronitrile, 3-5 parts of azobisisobutyronitrile and 10-30 parts of dimethyl azobisisobutyrate. The invention relates to a composite initiator special for synthesizing ultrahigh molecular weight polyacrylamide, which is suitable for bulk kettle polymerization for industrially generating polyacrylamide. A plurality of initiators are compounded, a polymerization reaction is completed in a segmental initiating way, free radicals are released segmentally by different types of initiators with different activating energy at different reaction temperatures, certain concentration of the free radicals is kept, a polymerization reaction speed is controlled, and the molecular weight of a polymerized product can be increased effectively. Reaction activating energy differs, and segmental initiation is performed; the initiator is water-soluble, and a reaction is uniform; and the reaction is insensitive to acid and alkaline environments, and high adaptability is achieved.

The invention discloses a mold used for an arc-shaped plate of a metal composite curtain wall. The mold comprises an arc mold surface, bearing platform supports, a mold base and a mold surface bearingplatform. The invention further discloses a thermal compounding process used for the arc-shaped plate of the metal composite curtain wall. According to the mold and the thermal compounding process used for the arc-shaped plate of the metal composite curtain wall, the mold is designed to be small, exquisite and flexible, so that automatic production assembly line work is achieved cooperatively, and the automation degree is effectively improved; the whole mold is convenient to assemble and disassemble,90% ore more of materials can be used repeatedly, and the rest of the materials can be used again after being processed for the second time, so that material waste of the mold is minimized, and the manufacturing cost is reduced; the whole mold is made from metal materials, so that the heat conductivity is good, the unique cavity design ensures direct conduction of the temperature, it is guaranteed that heat is efficiently transferred onto products from a heating device through a hot-pressing compounding device, and the pressing time of the products is shortened; and through the structure of the mold and the point-type fixing mode of the edges, uniform release of stress during thermal expansion and cold contraction is guaranteed, and local deformation is avoided.

The invention relates to a preparation method of MMA-BMA-MAA (methyl methacrylate-n-butyl methacrylate-methacrylic acid) ternary copolymer resin, and particularly relates to a method for preparing MMA-BMA-MAA ternary copolymer resin. The method comprises the following steps of: adding deionized water and an auxiliary dispersing agent into a reaction kettle, starting stirring, and heating; adding an initiator, a molecular weight regulator, MMA, BMA and MAA into the reaction kettle, and stirring and heating; after the reaction, adding a dispersing agent into the reaction kettle; continuing the reaction and heating; and washing and sieving to obtain the product ternary copolymer resin. According to the method provided by the invention, by introducing MMA into a polymer molecular chain, the adhesion between a high-paint film and various base materials can be increased; and meanwhile, since the MAA has a similar structure with the MMA and the BMA, a copolymerization reaction easily happens.

The invention relates to a combined reactor and a method of preparing pyrazolyl benzaldehyde acetal p-phenylene diamine bis-schiff base by using the combined reactor. The reactor mainly comprises a heating magnetic stirrer and a mating reaction device, wherein the heating magnetic stirrer is provided with a vacuum chamber and can conduct accurate temperature control. The reactor can conduct the accurate temperature control and overcome the problems of local over excitation reaction, insufficient reaction, liquid splash and the like in the traditional schiff base synthesis process. At the same time, the invention discloses the method of preparing pyrazolyl benzaldehyde acetal p-phenylene diamine bis-schiff base by using the reactor. Prepared bis-schiff base has a greater conjugated pi structure; the reaction efficiency is improved; and the reaction time is saved.

The invention discloses an efficient ionization reaction of a compound with a carboxylic acid group under catalysisof surface plasmon . The method comprises the following steps: dissolving the compound with the carboxylic acid group in ethanol, mixing an ethanol solution of the compound with the carboxylic acid group with an SERS substrate, and carrying out laser irradiation. Under laser irradiation, disulfide bonds of DTBA molecules are destroyed to form bimolecules similar to 4-MBA, the bimolecules are adsorbed on the surface of AgNPs, and bimolecular coupling greatly increases the possibility of combination of the molecules and the Ag NPs, so that the ionization reaction is stably and effectively carried out. Under monitoring of surface enhanced Raman spectroscopy (SERS), the occurrence of the efficient ionization reaction provides a certain value for the development of further related reactions, and the efficient ionization reaction also has wide application in pH sensors and intracellular pH monitoring.

The invention provides a preparation method of L-hydroxyproline, which comprises the following steps: (A) by taking pyroglutaminol and benzaldehyde as raw materials, carrying out condensation dehydration under the catalysis condition of an acidic catalyst to generate an intermediate product (3R,7aS)-3-phenyl-tetrahydro-pyrrolo[1,2]oxazol-5(3H)-one; and (B) sequentially carrying out beta-carbonyl oxidation reaction, carbonyl reduction reaction, catalytic hydrogenation reaction and hydroxyl oxidation reaction on the intermediate product to obtain L-hydroxyproline. The preparation method of L-hydroxyproline, provided by the embodiment of the invention, abandons the traditional way of animal extraction, is carried out by adopting a synthetic method, and has the effects of short reaction route, capability of avoiding potential TSE / BSE pollution, high product yield and relatively high purity.

The invention discloses a horizontal reactor of moving bed type, which produces propylene with oxygenated chemicals as raw material. The reactor includes a shell. One transverse end of the shell is provided with a raw material inlet and the other end is provided with a production outlet. A polyporous separator is arranged in the shell, which separates the internal space of the shell into at leastfour horizontal areas. The two areas at the end part of the shell are respectively communicated with the raw material inlet and the production outlet. The rest areas are one reaction area and a cooling area with an interval arranged in the middle. The shell corresponding to the upper end and the lower end of the reaction area is respectively provided with a catalyst inlet and a catalyst outlet. The shell corresponding to the cooling area is provided with a cooling liquid inlet. The horizontal reactor of moving bed type of the invention has simple structure, easy equipment design and manufacture, easy maintenance and convenient operation. The reaction can be controlled easily and the reaction condition can be kept well.

The invention discloses a continuous-method SAN (styrene-acrylonitrile) resin production method based on a plug flow reactor, and belongs to the field of SAN resin production.The continuous-method SAN resin production method based on the plug flow reactor comprises the steps that styrene, acrylonitrile and a conditioning agent are evenly and dispersedly introduced into a plurality of slender reaction tubes; the styrene, the acrylonitrile and the regulator are subjected to radial mixing reaction without axial mixing when flowing in the reaction tube, so that mass and heat transfer under high viscosity is facilitated, the device is suitable for producing high-molecular-weight SAN resin with higher viscosity, the high conversion rate of common-grade SAN polymerization can also be realized, and the production efficiency of the device is improved.

The invention belongs to the technical field of polyamide, and particularly relates to dipolyamine-modified copolyamide and a preparation method thereof. The dipolyamine-modified copolyamide is prepared from organic acid and organic amine, wherein a molar ratio of the organic acid to the organic amine is 1: (0.95-2.65); the organic amine contains, in percentage by mass, 1-80% of dipolyamine, and the rest raw materials of the organic amine are any one or a composition of more than one selected from of binary aliphatic amine, polybasic aliphatic amine, alicyclic amine, polyether amine, aromatic diamine, lactam and alcohol amine compounds. The dipolyamine-modified copolyamide can enhance low temperature resistance, thermal oxidation resistance, hydrolysis resistance, salt fog resistance, chemical corrosion resistance and ultraviolet radiation resistance at the same time, and has excellent comprehensive performance.

The invention relates to an iron removing process for flax roving and belongs to the technical field of flax processing. The iron removing process includes: iron ion removing is performed on the flax roving to remove iron ions in hemp fibers, then normal degumming and bleaching are performed on the roving, and finally the roving is washed. The iron removing process has the advantages that the iron removing is performed before the oxygen bleaching, hydrogen peroxide is prevented from being catalyzed by iron, the strength of the roving is increased effectively, the reaction during the oxygen bleaching is stable and even, and damage to fibers is small.