59results about How to "Convenient post-processing" patented technology

The invention discloses a method for preparing 3-allyl-3-hydroxy oxindole, which comprises the following steps of: adding a catalyst, solvent, isatin and silicane in a reaction bulb, stirring at the specific temperature, performing thin layer chromatography (TLC) detection until the isatin disappears, adding ethyl acetate for diluting, dripping concentrated hydrochloric acid, stirring continuously at the room temperature for half an hour, washing once sequentially by using solution of saturated sodium hydrogen carbonate and saturated saline solution, drying an organic phase by using anhydrous magnesium sulfate, and performing column chromatographic separation to obtain the 3-allyl-3-hydroxy oxindole. Various reagents used in the method can be obtained commercially, and have wide sources of raw materials and low cost; the used catalyst has a good catalytic effect and helps to reduce cost and also helps to simplify a process, reduce cost, facilitate aftertreatment process and reduce pollution to the environment.

The invention relates to the technical field of garbage recycling, and discloses a device for recycling urban plastic garbage. The device comprises a support; the left side and right side of the innerwall of the support are respectively and fixedly connected with the left side and right side of a crushing box; the inner wall of the crushing box is in movable sleeve connection with two packing augers, and the two packing augers are positioned in the same horizontal plane and are arranged in a staggered way together with spiral blades; the other ends of the packing augers extend out of one sideof the crushing box and are separately in fixed sleeve connection with a driving wheel; the exterior of one driving wheel is connected with an output shaft of the crushing shaft by means of a drivingbelt in a transmission way. According to the device for recycling the urban plastic garbage, the packing augers and a secondary crushing device are arranged, so that the plastic garbage is firstly broken by means of the packing augers, the crushed garbage is conveyed to the secondary crushing device by means of a crushed material conveying device after large plastic parts are broken into small plastic parts, and the secondary crushing device is used for performing high-speed secondary crushing; therefore, the various types of plastic product garbage can be more completely converted into smallbroken granules, and the post treatment process is facilitated.

The invention discloses a bivalent manganese catalyzed arylamine ortho-enylation reaction method, which comprises the following steps of: sequentially adding a weighed arylamine compound (1), substituted acetylene (2) and a metal catalyst MmXn into a reaction bottle, adding a corresponding solvent, performing stirring for 1h-48h in air under the reaction condition of 60-120DEG C, conducting cooling to room temperature, adding ethyl acetate for dilution, performing washing with saturated edible salt water, drying an organic phase with anhydrous magnesium sulfate, and carrying out column chromatography separation to obtain a target product (3). The method has the advantages that: arylamine and substituted acetylene are used as raw materials, the target product is obtained under the catalysisof divalent manganese, and compared with a traditional lewis acid catalytic synthesis strategy, the economic cost is greatly reduced, operation is convenient, product selectivity is good, safety andreliability are achieved, substrate universality is wider, the yield is high, and the method is suitable for industrial production.

The invention relates to a production line for stator and rotor punching processing, which is applied in the field of processing equipment for stator and rotor punching. The first receiving device for collecting the stator punches and the second receiving device for collecting the rotor punches. The base frame is slidably connected with a sliding seat that moves upwards in the direction close to the stamping die on the punching machine. The sliding seat is equipped with an inclined The material receiving plate, the inclination direction of the material receiving plate is parallel to the moving direction of the sliding seat, the end of the base frame close to the punching machine is provided with a stand, and the connecting rod mechanism is arranged on the stand, and the sliding seat is connected with the punching machine through the connecting rod mechanism. When the first working table of the stamping machine is connected, when the first working table of the punching machine rises, the sliding seat moves upwards obliquely, and when the first working table of the punching machine moves back, the sliding seat moves downwards obliquely; The problem of low processing efficiency has the advantage of improving the processing efficiency of stator and rotor punching.

A method for preparing gold nanoflowers in an ionic liquid aqueous solution, comprising the following steps: mixing the ionic liquid aqueous solution, chloroauric acid solution, and distilled water to prepare a mixed solution, and then heating the mixed solution with vitamin C in a water bath to obtain a reaction After the mixture is centrifuged, the finished gold nanoflowers are obtained. The present invention adopts ionic liquid as the reaction medium, and through a unique and convenient preparation process, under the conditions of complex operations such as no need for gold seeds and no need to adjust the pH of the reaction solution, the particle composed of nanosheets is simply and quickly prepared in one step. Gold nanoflowers with uniform size, good shape, stable structure and excellent performance.

The invention belongs to the technical field of hardware, in particular to a hardware waste material recycling technology. The hardware waste material recycling technology has the advantages that after a hardware waste material is cut into sheets by a plasma cutting machine, the surface of the hardware waste material is irregularly crushed by a punch head, and the surface of the hardware waste material forms convex parts and broken openings, so as to conveniently crush the hardware waste material; by adding a quantitative amount of ice and water mixture and grinding material into a crushing bin of a hardware waste material treatment device, the ice and water mixture can effectively prevent the shortening of the service life of the device due to high temperature in the crushing process of the hardware waste material, and effectively reduce noise in the crushing process; the grinding material can assist the device to crush the hardware waste material, and the surface of the hardware waste material is ground into uneven parts by the grinding material, so as to accelerate the crushing rate; by utilizing the rotation and movement of a crushing wheel, the vibration of an upper wheel anda lower wheel and the vibration and movement of the crushing bin, the hardware waste material can be treated, so that while the labor intensity is decreased, the hardware waste material can be fully treated.

The invention relates to a synthesis method of an aryl carbon glycoside compound. The preparation method includes: stirring amide raw material, sugar donor, divalent palladium metal catalyst, alkali and organic solvent for reaction while heating, cooling to room temperature, directly filtering, spin-drying filtrate, and performing column chromatographic separation to obtain the aryl carbon glycoside compound. Simple and efficient synthesis of the aryl carbon glycoside compound is realized by utilizing a method of Pd catalyzed aromatic hydrocarbon C (sp2)-H activation. The method has quite highuniversality and can be applied to a series of substrates like aryl formic acid, aryl acetic acid, benzylamine and phenol. The method utilizes halogenated sugar as the donor and is simple in synthesis step and suitable for large-scale production and application; guide groups which are used are not limited to 8-aminoquinoline, p-pyridine carboxylic acid and 2-aminopyridine nitrogen oxide and can be used for reaction. A new method and idea is provided for synthesizing a series of complex carbon glycoside drug and natural drug, and synthesis difficulty of carbon glycoside is lowered.

The invention discloses a method for preparing 3-allyl-3-hydroxy oxindole, which comprises the following steps of: adding a catalyst, solvent, isatin and silicane in a reaction bulb, stirring at the specific temperature, performing thin layer chromatography (TLC) detection until the isatin disappears, adding ethyl acetate for diluting, dripping concentrated hydrochloric acid, stirring continuously at the room temperature for half an hour, washing once sequentially by using solution of saturated sodium hydrogen carbonate and saturated saline solution, drying an organic phase by using anhydrousmagnesium sulfate, and performing column chromatographic separation to obtain the 3-allyl-3-hydroxy oxindole. Various reagents used in the method can be obtained commercially, and have wide sources of raw materials and low cost; the used catalyst has a good catalytic effect and helps to reduce cost and also helps to simplify a process, reduce cost, facilitate aftertreatment process and reduce pollution to the environment.

The invention discloses a wire clamping device. The wire clamping device comprises a base, a plurality of main elastic sheets, a plurality of secondary elastic sheets and inserting holes; multiple inserting holes are uniformly formed in the base; a pair of main elastic sheets and a pair of secondary elastic sheets are arranged on each inserting hole; one pair of main elastic sheets are symmetricalaround a symmetrical shaft and are in parallel mutually; the corresponding secondary elastic sheets are mounted on the base between the pair of main elastic sheets on each inserting hole; the heightof the secondary elastic sheets is 1 / 2 of that of the main elastic sheets; and an outwardly convex protection cover is arranged at the bottom of each inserting hole. By adoption of the structure, thewire clamping device can provide all-around protection for a wire connector, so that the wire connector is not damaged easily.