29 results about "Chemical used" patented technology

To provide protective clothing that can protect the body when attacked by a bear and repel the bear. [Solution] Protective clothing worn to repel bear attacks comprises a protective fabric 1 sandwiched between a surface fabric 2 and a backing fabric 3. The protective fabric 1 comprises a chemical-containing layer 11 capable of releasing a chemical to repel bears, and a protective layer 12 for physical protection from bear attacks. The chemical used to repel bears is capsaicin, derived from chili peppers. When a strong force is applied to the human body by a bear attack, physical damage to the chemical-containing layer 11 causes the chemical to be released, allowing the bear to repel. Furthermore, the protective layer 12 cushions the impact on the human body, making the garment effective in protecting the human body from bear attacks.

The invention discloses a reinforced protection method for an edge section of a full-paper-based container, which belongs to the technical field of paper-based container treatment, and comprises the following steps: step 1, end surface pretreatment: carrying out chip removal treatment on the cut end surface of a paper tube, and keeping a loose state of fibers; step 2, local impregnation and permeation: vertically and downwards immersing the end surface of the paper tube into the prepared solution, fixing the immersion depth to be 0.8 mm, keeping the immersion depth for 5 seconds, and enabling the paper tube to naturally permeate upwards along a gap of a paper layer by utilizing the low viscosity characteristic of the liquid; and 3, gradient curing is conducted, specifically, the treated paper tube is placed in circulating hot air at the temperature of 55 DEG C to be dried for 15 minutes. Different from a traditional method for coating the whole pipe body or compounding a plastic inner container, only the weakest cutting end face is subjected to precise treatment, the equivalent and even better protection effect is achieved, meanwhile, the use amount of chemicals is greatly reduced, the production cost is reduced, and the original advantages of air permeability of the wall body of the paper pipe and the like are kept.

The invention relates to a synthesis method and application of a double-layer thermochromic deformation hydrogel, according to the double-layer thermochromic deformation hydrogel, CMC is adopted to perform mechanical enhancement on original PNIPAm, LAP is adopted to perform photo-initiation on a monomer, and the price of CMC and LAP is far lower than that of functionalized silicon dioxide nanoparticles and AIBA in the prior art under the same usage amount. Meanwhile, drugs used in the process are free of volatility and corrosivity, and the safety degree is higher than that of acrylic monomers used in the prior art. Besides, the use temperature of a hydrogel device in the prior art is 60 DEG C and is high, while the double-layer temperature-sensitive hydrogel in the invention can be curled only at 40 DEG C, so that the hydrogel has more advantages in temperature. By adding CMC, the volume change of the hydrogel in the heating process is remarkably reduced, meanwhile, the mechanical property of the hydrogel is greatly improved, the mechanical property of the hydrogel is further improved through impregnation of zirconium ions, and the hydrogel has a wider application scene.

This utility model discloses an integrated device for precise metering, mixing, and spraying of chemicals using a vibration-type method, belonging to the field of tailings treatment technology. It includes a main shell, a chemical input device, a mixing device, a spraying device, and a conveying device. The chemical input device is located on top of the main shell and includes a mixing chamber and a connecting unit. The mixing chamber is located on top of the main shell and connected to the spraying device via the connecting unit. The chemical input device is connected to the spraying device located inside the main shell. The spraying device is used to input chemicals into the mixing chamber inside the main shell. A raw material feeding port is located at the top of the main shell and connects to the mixing chamber. The mixing device is located inside the mixing chamber and is used to mix the special chemicals and raw materials fed into the mixing chamber. A conveying device is connected below the mixing chamber and is used to transport the mixed mixture to a pressing device. This utility model has the advantages of precisely controlling the amount of chemicals used and achieving uniform mixing.

[Problem] To efficiently set a farm field for spraying chemicals and a route for the farm field, for each of a plurality of operators. [Solution] A program to be executed by a computer comprising a processor and a memory. This program causes the processor to execute: a step for acquiring information about a plurality of farm fields to which chemicals are to be sprayed, and information about a plurality of operators responsible for spraying chemicals using a flying vehicle; a step for grouping the plurality of farm fields for each operator on the basis of the productivity of the plurality of operators; and a step for referring to a group of farm fields grouped for each operator and setting farm fields that each of the plurality of operators is responsible for and a route of spraying chemicals in the farm fields so as to satisfy a predetermined schedule.

The invention relates to a thermal forming plastic pipe machine. Comprising a base table, a motor control assembly arranged on one side of the base table, a pushing unit arranged on the base table, a rotating unit arranged on the pushing unit, a clamping unit arranged on one side of the pushing unit, a heating forming unit arranged on one side of the base table and a toggle clip unit arranged on one end side of the base table. The rotating unit can be used for embedding and clamping a forming rod sleeved with a machined Teflon pipe, the forming rod is at least provided with a threaded part at one end, and the rotating unit can drive the forming rod to rotate; the pushing unit can push the rotating unit to slide on the base table, the clamping unit can clamp the forming rod sleeved with the machined Teflon pipe, and the heating forming unit conducts heating and pressurizing machining action on the threaded portion of the forming rod sleeved with the machined Teflon pipe. The thread part of the forming rod is sleeved with the machined Teflon pipe, and the machined Teflon pipe is in a spiral shape. Therefore, the diversification, the convenience and the processing accuracy of processing the Teflon pipe for the chemical industry into a spiral shape can be improved.

The present disclosure relates to a method for producing high-value-added chemicals using waste plastics, the method comprising the steps of: a) pyrolyzing waste plastic feedstock to generate an oil-containing stream; b) reacting a part or all of the oil-containing stream in the presence of a catalyst in at least one circulating fluidized bed reactor; and c) separating and recovering high-value-added chemicals from the reaction product, wherein the oil-containing stream produced in step a) is fed into the reactor of step (b) without a process of removing olefins and non-hydrocarbon substances, and the catalyst contains phosphorus (P), has one or more metals selected from Cu, Ag, La, Ga, and Ni loaded thereto, and is pre-treated by pre-steaming.

This invention provides a method for removing the core of a rare earth oxide core-shell ceramic core. The method includes the following steps: Step 1, preparation of the core removal solution; Step 2, preparation of the core removal solution; Step 3, assisted core removal; Step 4, neutralization and cleaning with alkaline solution; Step 5, assisted core removal; Step 6, neutralization and cleaning with acid solution; Step 7, repeating steps 3-6 more than twice until the ceramic core inside the titanium alloy casting is completely disintegrated and removed, resulting in a titanium alloy casting with the core removed. The core removal method of this invention has the following advantages and effects: (1) the required raw materials are inexpensive; (2) the chemicals used in the core removal process are less toxic; (3) the core removal process is simple, the core removal efficiency is high, and the core removal time is short, which can be completed within 24h-36h; (4) the removal process can be carried out under normal pressure and will not cause damage, wear, or other adverse conditions to the titanium alloy casting, which is beneficial to improving the integrity of the titanium alloy casting.

Disclosed are devices and methods for capturing carbon dioxide and other gases. All gas-capturing systems employ chemical fluid / media for binding purposes. One system delivers chemicals in droplet form, while another system delivers feed gas in bubble form. All systems employ an admixing chamber for confining and uniting particles of matter, as well as streaming means for placing gas in confinement. The droplet-based delivery system packetizes chemicals using an atomizing device, while the bubble-based delivery system packetizes gaseous feedstock using metering means, rerouting means, perturbation means, and stream-dividing means. The droplet and bubble systems feature common or unique advantages relating to chemical flow, surface area, and / or progressive cycling. These advantages increase the efficiency of gas-capturing devices in general and decarbonizing devices in particular.

The chemical barrel comprises a chemical barrel body (1), an anti-leakage cover (2) is arranged outside the chemical barrel body (1) in a sleeved mode, a lifting mechanism (3) is arranged between the outer side wall of the bottom of the chemical barrel body (1) and the inner side wall of the bottom of the anti-leakage cover (2), and the lifting mechanism (3) is connected with the anti-leakage cover (2). The two ends of the supporting spring (31) are connected with the outer side wall of the bottom of the chemical barrel (1), and the two ends of the damper (32) are connected with the inner side wall of the bottom of the anti-leakage cover (2); the supporting force of the supporting spring (31) and the damper (32) is between the downward pressure when the chemical barrel (1) is in an empty barrel state and the downward pressure when the chemical barrel (1) is in a full barrel state. The anti-leakage cover does not need to be lifted and dumped by a worker, the working intensity of dumping is reduced, and when chemical liquid in the chemical barrel leaks, the leakage can be perceived by the worker at the first time and corresponding disposal is carried out.

The invention discloses a physical expansion stripping chemical etching preparation method of MXene, which comprises the following steps: placing an MAX phase precursor in a supercritical reaction kettle, introducing carbon dioxide, regulating and controlling the temperature and the pressure to enable the carbon dioxide to reach a supercritical state, and carrying out physical expansion; after stirring at constant temperature and constant pressure for a certain time, carrying out physical puffing pressure relief treatment, and repeating the physical puffing pressure relief operation for n times; putting a product subjected to physical expansion treatment, a fluorine-free etching agent and an auxiliary agent into a supercritical reaction kettle together, introducing carbon dioxide again, regulating and controlling the temperature and the pressure to maintain the carbon dioxide in a supercritical state, and meanwhile, carrying out a supercritical state etching reaction for a preset duration in a stirring or fluid circulation manner; after the supercritical state etching reaction is completed, carrying out instantaneous blasting treatment on a reaction system; and taking out a reaction product, and washing the reaction product until the reaction product is neutral to obtain the target MXene. The chemical etching effect is improved, the chemical reaction time is shortened, and the dosage of chemicals is reduced.

The disclosed apparatus for mixing and supplying chemicals used for semiconductor processes according to the present application includes: raw chemical supply lines for externally supplying chemicals; and a mixing line for receiving the chemicals from the raw chemical supply lines to produce a chemical mixture; wherein one end of each of the raw chemical supply lines is connected to a chemical storage tank in which the chemicals are stored, and a chemical flow controller for controlling the flow rate of the chemicals is installed in each of the raw chemical supply lines, and the chemical flow controllers installed in each of the raw chemical supply lines are controlled in multiple channels using one controller, and the flow rate of each of the chemicals is preset corresponding to a mixing ratio of the chemicals and stored as a preset value, and when the chemicals are supplied for mixing, the flow rates of the chemicals are simultaneously controlled using the preset values corresponding to the mixing ratio, which are previously stored.

A method of determining if a terrestrial test animal and / or test animal from which a product is derived has been treated and / or is currently undergoing treatment with at least one antibiotic and / or veterinary chemical includes: (a) determining a test methylation profile from genomic material contained in a biological sample obtained from the test animal and / or the animal-derived product; and (b) comparing the test methylation profile obtained from (a) with a reference methylation profile obtained from a control animal of the same biological taxon of the test animal, where the control animal was not treated and / or is not currently undergoing treatment with at least one antibiotic and / or veterinary chemical, wherein a difference in the test methylation profile of (a) compared to the reference methylation profile from the control animal is indicative of the test animal having been treated and / or is currently undergoing treatment with at least one antibiotic and / or veterinary chemical.

A method for manufacturing a histologic tissue sample support device includes molding a tissue cassette, molding a frame, and coupling the tissue cassette to the frame by assembling a frame-cassette connector. The tissue cassette has a recess including at least one side wall and a bottom wall. The tissue cassette is formed of a first material that can be successfully sectioned in a microtome and is resistant to degradation from solvents and chemicals used to fix, process and stain tissue. The frame includes a bottom edge and is formed of a second material different from the first material and more rigid than the first material. The frame-cassette connector includes a first retaining structure formed integrally with the frame extending through a second retaining structure formed integrally with the cassette. The frame is capable of being decoupled from the cassette by separating the frame-cassette connector.

This application provides a method for manufacturing a circuit board, relating to the field of circuit board manufacturing technology. The method includes: providing a sample board; slicing the sample board to form sampling holes; laminating a wiring layer onto the sliced ​​sample board; and removing the portion of the wiring layer opposite to the sampling holes. This method, by removing the portion of the wiring layer opposite to the sampling holes after laminating the wiring layer onto the sliced ​​sample board, avoids the formation of a cavity structure in the sliced ​​circuit board, prevents the sampling holes from harboring chemicals used in wet processing, and effectively prevents these chemicals from seeping into the internal layer structure of the circuit board, thus helping to prevent circuit board delamination.

------ Glove for nuclear, radiological, biological, and chemical use. Glove comprising: A. a portion intended to be applied to the dorsal surface of the hand, including the regions of the palm (Ap), index finger (Ai), middle finger (Am), ring finger (Aan), and little finger (Aau); B. a portion intended to be applied to the ulnar surface of the hand, including the regions of the palm (Bp), index finger (Bi), middle finger (Bm), ring finger (Ban), and little finger (Bau). The regions (Bi), (Bm), (Ban), and (Bau) are each formed from a piece independent of the rest of the glove, which extends on either side, along the respective finger, to form a fold towards the corresponding region (Ai), (Aam), (Aan), and (Aau) for joining with it. Figure to be published with the abbreviation: Figure 1

A histologic tissue sample support device includes a tissue cassette, a frame, and a lid. The tissue cassette has a recess including at least one side wall and a bottom wall and is formed of material that can be successfully sectioned in a microtome and is resistant to degradation from solvents and chemicals used to fix, process and stain tissue. The lid is coupled to the frame and includes a platen configured to be received within the recess of the tissue cassette. The tissue cassette is movably coupled to the frame by a frame-cassette connector. The lid and the tissue cassette are capable of moving from a first position to a second position with respect to the frame, and in the second position the bottom wall and at least a portion of the side wall extend beyond a bottom edge of the frame for sectioning in a microtome.

The application relates to the technical field of semiconductors, in particular to a purification system for semiconductor wet chemicals, which comprises a negative pressure assembly, a bottle body capable of containing a high-purity degassing membrane, a first sealing plate and a second sealing plate arranged at two ends of the bottle body, a liquid inlet arranged on the outer wall of the first sealing plate, a liquid outlet, a gas outlet, a liquid outlet arranged on the outer wall of the second sealing plate, and a two-way diaphragm winding structure formed by a center column and an isolation column, which effectively enlarges the contact area of the wet chemicals, avoids the short circuit problem of the flow path, and greatly improves the degassing efficiency. Meanwhile, a full-sealing gasket sealing design is combined to prevent the invasion of external impurities and secondary pollution caused by chemical oxidation.

The present invention relates to an assembly for extracellular secretion of a target chemical substance, which comprises a conjugate including an aptamer fused to RNA of the target chemical substance that can be produced intracellularly, and a transporter including an RNA-binding protein fused to a carrier protein; a gene construct encoding each of the transporter and the conjugate constituting the assembly; a vector carrying the gene construct; a host cell into having the vector introduced thereinto; a method for producing the target chemical substance, the method comprising a step of culturing the host cell; an extracellular secretion system of the target chemical substance constructed by introducing the gene construct or the vector into a microorganism; and a method for producing the target chemical substance by activating the system. By using the assembly and the system according to the present invention, it is possible to increase the intracellular production as well as extracellular secretion and excretion of the target chemical substance, and the invention can be advantageously applied to the production of microorganism-based useful chemical substances.

The utility model discloses an aluminum pot for liquid chemicals, which belongs to the field of aluminum pot processing and comprises a pot body, a cover body and a gasket, a bottle opening and an inner flange are arranged at the top of the pot body, the inner flange is arranged at the bottle opening along the circumferential direction of the bottle opening and faces the center of the bottle opening, and the gasket is mounted at the bottle opening and comprises a main body part and a convex part. The protruding part extends upwards from the bottom of the body part, the body part is of a structure with the wide upper portion and the narrow lower portion, the outer diameter of the top of the body part is matched with the bottle opening, a through hole is formed in the protruding part in the axis direction of the protruding part, the through hole penetrates through the body part and is communicated with the bottle opening and the inner cavity of the tank body, and the cover body is installed at the bottle opening and covers the gasket. According to the liquid chemical storage tank, the gasket structure is independently arranged at the bottle opening of the tank body, liquid chemicals are contained through the through hole of the protruding part, operation is convenient, pollution is not prone to being caused, meanwhile, the sealing performance of the device is good, and the use effect of subsequent chemicals is guaranteed; the device is simple in overall structure, small in occupied area and convenient to carry.

To provide a polyethylene resin for a high purity chemical container which suppresses elusion of a contaminant such as an eluted matter and a deteriorating matter of a polyethylene resin as much as possible, when the resin is used as a high purity chemical container, and is excellent in chemical resistance, and a container made of the same.SOLUTION: A polyethylene resin for a high purity chemical container contains two components of an ethylene-based polymer having an MFR of 10-40 g / 10 min and density of 0.960-0.970 g / cm3 and an ethylene-based polymer having an HLMFR of 0.01-3 g / 10 min and density of 0.920-0.940 g / cm3, has a weight ratio of the two components of 40:60 to 60:40, and has specific properties.SELECTED DRAWING: None

The invention discloses a high-purity chemical supply and conveying device for semiconductor chip manufacturing, and belongs to the technical field of chemical conveying, the high-purity chemical supply and conveying device comprises an exhaust mechanism used for exhausting to-be-conveyed chemicals, and the exhaust mechanism is provided with a conveying mechanism used for conveying the chemicals. The conveying mechanism is provided with a switching mechanism used for switching conveying paths. Hydrodynamic force and exhaust action are mechanically linked, the stirring fan blades are driven by fluid entering the pipe, and finally the deflation gear is driven to rotate, so that the flow of chemicals is in direct proportion to the rotating speed of the deflation gear, the deflation gear periodically presses the upper spherical disc with the ventilation cylinder through the eccentric pressing column, and therefore the exhaust channel is opened, and the larger the flow is, the larger the deflation gear is. The higher the bubble generation tendency is, the faster the gear rotating speed is, and the more the number of times of opening the exhaust channel in unit time is, so that automatic matching of the exhaust frequency and efficiency with the fluid flow and the bubble amount is achieved, and it is ensured that bubbles can be removed in time at various flow speeds.

The invention belongs to the technical field of chemical synthesis, and particularly provides a preparation method of tert-butyl isothiocyanate, which comprises the following steps: S1, reacting tert-butylamine with carbon disulfide to generate tert-butyl thiocarbamate; and S2, carrying out a removal reaction on the tert-butyl thiocarbamate and a desulfurization reagent, so as to generate the tert-butyl isothiocyanate. According to the preparation method disclosed by the embodiment of the invention, chemicals used in the route are conventional reagents, so that the safety of reaction and operation is greatly improved; in addition, according to the preparation method provided by the embodiment of the invention, high-temperature catalysis is not needed, and unnecessary by-products are not generated.

This method facilitates the impregnation of wood with chemicals used in wood treatment while maintaining the aesthetic appeal of the wood's surface. [Solution] The wood 20 for chemical treatment has a surface portion 21 that comes into contact with the chemicals used in the chemical treatment of the wood, and a plurality of holes 22 that open in the surface portion 21. The visible light reflectance of the surface portion 21 of the wood 20 is 90 to 100% of the visible light reflectance of the surface portion 21 before the formation of the plurality of holes 22.

This utility model discloses a corrosion-resistant stacking drum for chemical use, relating to the field of chemical drum technology. It includes a drum body composed of an inner layer, a barrier layer, a structural layer, and an outer layer. A feed pipe communicating with the interior of the drum body is fixedly connected to the top of the drum body, and a drum lid is threaded onto the feed pipe. A fixing rod is fixedly connected to the top of the inner drum body, and four corrugated plates are circumferentially fixed to the outer wall of the fixing rod. The other end of each corrugated plate is fixedly connected to the inner wall of the drum body. This utility model comprehensively improves the strength of the drum body, stacking stability, and operational safety by using a multi-layered structure to block corrosion, bottom support and positioning for stable stacking, corrugated plates to disperse kinetic energy and suppress liquid surface sloshing, and the dimensional matching of components such as handles to ensure stacking stability, while reducing the risk of chemical splashing.

The invention relates to the field of nuclear power plant chemicals, in particular to a power station chemical use intelligent control system, which comprises a data acquisition module, a gaseous chemical module and a liquid chemical module, and is characterized in that the data acquisition module acquires parameters of a chemical storage tank and transmits the parameters to the gaseous chemical module and the liquid chemical module; the gaseous chemical module processes the input parameters and the parameters of the data acquisition module to obtain pressure parameters and operation parameters of gaseous chemicals, and the liquid chemical module processes the input parameters and the parameters of the data acquisition module to obtain liquid level parameters and operation parameters of liquid chemicals. The system can monitor the parameters of the chemicals at any time, automatically calculate and display the current remaining amount of the chemicals according to the shape of a chemical storage tank and the physical characteristics of the chemicals, and automatically calculate the stable operation time of a chemical supply unit, the time of the chemicals needing to be supplemented next time and the amount of the chemicals needing to be supplemented next time.

The purpose is to deliver the chemical to a wide variety of target objects, such as bedding, clothing, bed mattresses, carpets, sofas, and vehicle seats, and to impart properties such as antibacterial, disinfectant, germicidal, insecticidal, mite-killing, insect-repellent, and deodorizing effects. [Solution] The system includes a degassing means 200 for degassing air contained in the filling material inside the three-dimensional structure 300, and an injection means 100 for injecting drug-containing water vapor from a drug-containing water vapor generator 110 that generates drug-containing water vapor containing the drug 120 into the interior of the three-dimensional structure 300. The drug 120 is applied to the interior of the target object 300 by coordinating the internal air pulling operation by degassing and the drug-containing water vapor pushing operation by injection. Degassing by the degassing means 200 and injection by the injection means 100 are performed simultaneously, alternately, or in combination on the target object 300.

In some embodiments, a computer-implemented method of generating predictions related to a chemical workflow including a process performed on at least one chemical is provided. A computing system encodes a representation of at least one chemical using a chemical encoder to create at least one potential chemical representation. The computing system creates a potential experimental representation based on the at least one potential chemical representation. The computing system decodes the potential experimental representation using an experimental decoder to predict one or more properties of the output of the chemical workflow, to generate an updated representation of the at least one chemical, or to generate an updated representation of the process.