Products

N-methylpyrrolidone (NMP) is a polar aprotic solvent. It has low toxicity, high boiling point and outstanding solubility. The advantages of strong selectivity and good stability. Widely used in aromatic hydrocarbon extraction, purification of acetylene, olefins and diolefins, solvents for polyvinylidene fluoride, electrode auxiliary materials for lithium ion batteries, syngas desulfurization, lubricating oil refining, lubricating oil antifreeze, olefin extractant, difficult Solvents in the polymerization of engineering plastics, agricultural herbicides, insulating materials, integrated circuit production, cleaning of precision instruments in the semiconductor industry, circuit boards, PVC exhaust gas recovery, cleaning agents, dye auxiliaries, dispersants, etc. It is also used as a solvent for polymers and a medium for polymerization, such as engineering plastics and aramid fibers. It can also be used in pesticides, medicines and cleaning agents. The main uses of N-methylpyrrolidone with different grades and specifications are listed as follows: 1. Industrial grade: lubricating oil refining, lubricating oil antifreeze, syngas desulfurization, electronic insulation materials, agricultural herbicides, pesticide additives, PVC tail gas recovery, Auxiliaries and dispersants for the production of high-grade coatings, inks, pigments, etc. For example, it is used to extract aromatic hydrocarbons in lubricating oil to achieve the purpose of refining lubricating oil; due to the high solubility of NMP to resin, it can be used as a solvent for resin processing in the manufacture of coatings, floor paints, varnishes, composite coating films, integrated circuit enameled wires Insulation materials, fiber fabrics and adhesives and other products. 2. Ordinary grade: extraction and recovery of basic organic raw materials, such as acetylene concentration and extraction of butadiene, isoprene, aromatic hydrocarbons, etc. It can be used as a solvent for recovering acetylene from natural gas or light naphtha thermal cracking gas, and the purity of recovering concentrated acetylene can reach 99.7%; as an extractant for separating and recovering high-purity butadiene from cracked C4 hydrocarbons, the recovery rate can reach 97%. %, the purity of recovered butadiene is 99.7%, and it is used as an extractant for recovering high-purity isoprene in cracking C5 hydrocarbons, and the recovery purity of isoprene reaches 99%; when it is used as an extractant for aromatic hydrocarbons, it has high solubility for aromatic hydrocarbons. With low vapor pressure, the extraction agent loss rate is low and the aromatic hydrocarbon recovery rate is high. 3. Reagent grade: integrated circuits, hard disks and other industries that require strict control of metal ions and particles Rust, paint stripping, etc., such as photoresist removal liquid, cleaning of precision instruments in IC semiconductor industry, LCD liquid crystal materials, PCB printed circuit boards, hard disks; and production of artificial kidney function membrane liquid, seawater desalination membrane liquid and other pharmaceutical industry production solvent.