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31results about How to "Suitable for production process" patented technology

Preparation method and application of molecularly imprinted polymer for directionally protecting functional groups

The invention provides a preparation method of a molecularly imprinted polymer for directionally protecting functional groups. Two molecularly imprinted polymers are synthesized by using 200-400 meshes of macroporous aminomethyl resin microspheres subjected to double-bond modification as a carrier, methacrylic acid as a monomer, and 2-methyl cyclopentanol as a template or 4-vinyl pyridine as a monomer and 5,6,7,8-tetrahydrogen-2-naphthol as a template. The preparation method has the advantages that: 1) the molecularly imprinted polymer prepared by a surface imprinted technology has the characteristic of specific identification, i.e. selectively adsorbing functional groups requiring for protection; 2) the molecularly imprinted polymer has the function of non-covalent protection to active groups under a same chemical environment, has strong practicality and can be used for protecting functional groups in directional organic chemical reaction, so that the functional groups can be protected effectively and the purity of an objective product reaches 100%; and 3) the prepared molecularly imprinted polymers as the protecting groups can be used repeatedly, and the reaction cost can be reduced, thus the molecularly imprinted polymer is applicable for being popularized in production process.
Owner:NANKAI UNIV

Method of preparing acetylene by partial oxidization of natural gas

The invention belongs to the technical field of preparing hydrocarbons from low-carbon-atom hydrocarbons through partial combustion and particularly relates to a method of preparing acetylene by partial oxidization of natural gas. The method includes steps of: (A) respectively feeding oxygen and natural gas into a preheating furnace for preheating and feeding the mixed gas into a mixing chamber ofan acetylene reaction furnace, and feeding the mixed gas into a combustion chamber of the acetylene reaction furnace for reaction, the reaction being terminated through water quenching; (B) enablingthe cracked gas containing acetylene successively to pass through the lower section of a cooling tower, an electric dust remover and the upper section of the cooling tower and to be fed into an acetylene concentrating system by means of a compressor; (C) feeding carbon black liquid generated in the acetylene reaction furnace, the electric dust remover and the cooling tower into a carbon black liquid header pipe, and feeding the carbon black liquid into a vacuum stripping column to remove the organic gas therein, and feeding the carbon black liquid into an opened carbon black tank, and coolingthe treated carbon black liquid in a hyperbolic cooling tower. The method is suitable for a production process with high oxygen ratio and the opened carbon black tank.
Owner:CHINA PETROLEUM & CHEM CORP +2

Processing method of leisure food taking cultivated meat as raw material

The invention belongs to the technical field of animal cell culture and meat product processing, and discloses a processing method of a leisure food taking cultivated meat as a raw material. The processing method comprises the following steps of: collecting muscle tissues by using a sterile surgical instrument, cutting the muscle tissues into minced muscle, and extracting, culturing, differentiating and collecting muscle-derived cells; pretreating the muscle tissues, including pickling, coloring, seasoning and the like; forming and performing hot processing; and cooling a sample, and performing packaging treatment to obtain an instant meat product processed by the cultivated meat. The processing method disclosed by the invention improves the cell cultivation efficiency, reduces cell deathand obtains effective cells to the maximum extent; by using a cell factory, the cell collection efficiency is 5-20 times higher than that of a normal culture dish, the cell collection is accelerated,the cell cultivation efficiency is improved, and a large foundation is laid for subsequent food processing; and by adding multiple auxiliary materials and additives and performing freeze forming, batch operation is facilitated, and relatively rich product forms can be obtained.
Owner:CHINA MEAT RES CENT

A kind of display circuit board and its manufacturing method, led display screen

The invention discloses a display circuit board, a manufacturing method thereof and an LED display screen, belonging to the technical field of micro-pitch display screens. The circuit board includes a glass substrate and a plurality of electronic components arranged on the glass substrate; the front and back of the glass substrate are provided with circuit layers, and at least one of the circuit layers on the front or back is a multi-layer circuit layer, wherein the multiple Each circuit layer of the layer circuit layer is provided with an insulating layer, and the insulating layer is provided with a window to realize the electrical connection between the circuit layers and the electrical connection between the circuit layer and the electronic components; The flip-chip bare crystal LED light emitting chip and the bare crystal constant current driver chip on the front side of the substrate, wherein each bare crystal constant current driver chip drives at least one flip chip bare crystal LED light emitting chip. By adopting the present invention, the pixel pitch of the LED display screen can be effectively reduced, and the stability of the display image signal, the simplicity of product construction process integration and the seamless splicing among LED display units can be realized.
Owner:熊周成

Refrigerator with double-layer door structure

The invention provides a refrigerator with a double-layer door structure. The refrigerator comprises a refrigerator body, an inner-layer door, an outer-layer door, a lighting device, a lighting switchand a transition piece, wherein a storage compartment is defined in the refrigerator body, the inner-layer door is connected to the refrigerator body in an open and closed mode, a through hole is formed in the position, close to the edge, of the inner-layer door, the outer-layer door is connected to the outer side of the inner-layer door in an open and closed mode, the inner-layer door and the outer-layer door can be opened and closed independently or together, the lighting device is used for lighting the storage compartment, the lighting switch is arranged on the part, making contact with the inner-layer door, of the refrigerator body, the contact point position of the lighting switch is opposite to the through hole, the transition piece is integrally arranged in the through hole in a penetrating mode, and the length of the transition piece is larger than the length of the through hole, so that the two ends of the transition piece can abut against contact points of the outer-layer door and the lighting switch correspondingly. According to the refrigerator with the double-layer door structure, the lighting switch is closed or opened by using a mechanical structure, the structure is simple, switch control components are reduced, and the control program of a circuit is simplified.
Owner:CHONGQING HAIER REFRIGERATION ELECTRIC APPLIANCE CO LTD +2

Preparation method and application of molecularly imprinted polymer for directionally protecting functional groups

The invention provides a preparation method of a molecularly imprinted polymer for directionally protecting functional groups. Two molecularly imprinted polymers are synthesized by using 200-400 meshes of macroporous aminomethyl resin microspheres subjected to double-bond modification as a carrier, methacrylic acid as a monomer, and 2-methyl cyclopentanol as a template or 4-vinyl pyridine as a monomer and 5,6,7,8-tetrahydrogen-2-naphthol as a template. The preparation method has the advantages that: 1) the molecularly imprinted polymer prepared by a surface imprinted technology has the characteristic of specific identification, i.e. selectively adsorbing functional groups requiring for protection; 2) the molecularly imprinted polymer has the function of non-covalent protection to active groups under a same chemical environment, has strong practicality and can be used for protecting functional groups in directional organic chemical reaction, so that the functional groups can be protected effectively and the purity of an objective product reaches 100%; and 3) the prepared molecularly imprinted polymers as the protecting groups can be used repeatedly, and the reaction cost can be reduced, thus the molecularly imprinted polymer is applicable for being popularized in production process.
Owner:NANKAI UNIV

A kind of led display unit and led display screen

The invention discloses an LED display unit and an LED display screen, belonging to the technical field of LED display screens. The LED display unit includes a substrate, a plurality of flip-chip bare crystal LED light-emitting chips, a plurality of bare crystal constant current drive chips and a signal control module: the front of the substrate is provided with an RGB drive circuit, and the back is provided with a control circuit and a power supply circuit. The circuit, control circuit and power supply circuit are all ITO coated circuits or copper-clad circuits; the substrate is provided with conductive holes, and the control circuit and power supply circuit are electrically connected to the RGB drive circuit through conductive holes; flip-chip bare crystal LED light-emitting chips and bare crystal constant current The driver chip is arranged on the front of the substrate and is electrically connected to the RGB driver circuit, wherein each bare crystal constant current driver chip drives at least one flip-chip bare crystal LED light-emitting chip; the signal control module is fixed on the back of the substrate with the power supply circuit and the control circuit electrical connection. By adopting the present invention, the pixel pitch of the LED display screen can be effectively reduced, and the stability of the display image signal, the simplicity of product construction process integration and the seamless splicing among LED display units can be realized.
Owner:深圳市兆驰晶显技术有限公司
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