36results about How to "Consistent viscosity" patented technology

The present invention relates to a process for the production of silylated polyurethane resins free of unreacted residual isocyanate possessing consistent viscosity and stability and products therefrom.

The invention relates to a high-efficiency slurry bed reactor, which belongs to the field of chemical machinery. It mainly consists of a solid-liquid separator, a variable-diameter inner sleeve, a reactor jacket, a heat exchanger with internal components, a gas riser with nozzles, an inner sleeve with heating and gas distribution functions, anti-blocking nozzles, nozzle mounting plates, Heat exchanger, heating coil outlet, secondary distribution plate, heating coil, etc. The beneficial effects of the present invention are that the distributor of the reactor is not easily blocked, the gas-liquid mixing is uniform, the gas-solid contact is sufficient, the reaction efficiency is high, the carrying amount of the catalyst and the solvent is small, the bias flow, channel flow and dead bed are not easy to occur, and the slurry flow rate Fast, the viscosity of the slurry in the reactor is basically the same, and the heat of reaction can be removed in time, especially in the stage of catalyst reduction and temperature rise, it is easy to realize the stable operation of the reactor. In addition, the distribution of the feed gas in the reactor along the axial direction is basically the same as the concentration of the catalyst. The catalyst can maximize its reactivity, and the space of the reactor can be fully utilized.

The present disclosure discloses a sealing agent, a liquid crystal panel, a liquid crystal display device, and a fabricating method thereof. The sealing agent comprises a sealing agent matrix and graphene oxide. The graphene oxide not only functions to support substrates and enable electrical conduction, but also effectively prevents the phenomenon of liquid crystal molecules penetration from occurring. In this way, a liquid crystal panel which is prepared with the sealing agent as a bonding agent has excellent display effect.

The invention relates to a process method for preparing nylon12 by taking long-chain amino acid as a monomer. The process method comprises the following steps: first, putting 12-aminododecanoic acid and water serving as raw materials into a reaction kettle according to a mass ratio of 1 to (1 to 4); second, adding 0.01 to 1 percent of catalyst, 0.05 to 0.5 percent of antioxidant, 0.08 to 5 percent of molecular weight conditioning agent into the reaction kettle based on the mass of the raw materials in sequence to perform initial polymerization, and performing polymerization in a polymerization kettle; finally, increasing the viscosity in a co-rotating twin-screw extruder to prepare the nylon12 product. The preparation method is simple, and is easy to operate; the prepared nylon12 resin is free from coking, nodes, narrow molecular weight normal distribution, consistent viscosity and wide application range.

The invention discloses a high-viscosity warm-keeping antibacterial yarn. The high-viscosity warm-keeping antibacterial yarn consists of a fiber layer, a high-viscosity layer, an insulating layer andan antibacterial layer, wherein the high-viscosity layer permeates the inner part and the outer side of the fiber layer through soaking, the insulating layer is arranged outside the fiber layer, and the antibacterial layer coats the outer sides of the insulating layer and the fiber layer. The fiber layer and the insulating layer are separately prepared, and the yarn is formed by combination of doubling and twisting operation, so that uniform combination of the insulating layer and the fiber layer is guaranteed and the overall insulating performance of the yarn is better; loosing drum wound with the fiber layer is fixed through rotation in a soaking device, so that the fiber layer can be prevented from falling off in soaking and the stability of the fiber layer in soaking is improved; and meanwhile, a traction wheel is arranged on a rotary frame, and by combination with spraying of a spray head, the soaking device can soak and spray the yarn, so that the efficiency of the whole yarn production process is improved.