NMP can be used as a solvent or cosolvent in the formulation of pesticides, fungicides, herbicides and seed control products. It is very necessary in high polar compounds. It is very useful in multi-component systems.
Its compatibility with water and traditional organic solvents facilitates the development of efficient products and can be specially designed to meet many different applications. NMP is non-corrosive. The blends containing NMP and other solvents also showed good synergism.
NMP blends are used to clean products or surfaces completely immersed in oils, greases, carbons, colloids and other solutions. Another related important application area is degreasing of metallic materials before advanced treatment, coating or galvanizing.
In summary, NMP has been applied in a wide range of fields. For example, NMP is used as an absorption medium to remove or separate organic compounds in waste gases, such as sulfur dioxide, hydrogen sulfide and vinyl chloride.
1. Industrial grade: lubricating oil refining, lubricating oil antifreeze agent, synthetic gas desulfurization, electronic insulation materials, agricultural herbicides, pesticide additives, PVC tail gas recovery, high-grade paint, ink, pigments and other production additives and dispersants. For example, it can be used to extract aromatic hydrocarbons from lubricating oil in order to refine lubricating oil; because N-methyl pyrrolidone has high solubility to resin, it can be used as a solvent for resin processing to manufacture coatings, floor paints, varnishes, composite coatings, integrated circuit enamelled insulating materials, fibre fabrics and adhesives, etc. Products.
2. Ordinary grade: extraction and recovery of basic organic raw materials, such as acetylene enrichment and butadiene, isoprene, aromatics, etc. It can be used as a solvent for recovering acetylene from natural gas or light naphtha pyrolysis gas, and the purity of concentrated acetylene can reach 99.7%. As an extractant for separating and recovering high purity butadiene from pyrolysis C4 hydrocarbon, the recovery rate is 97%. The purity of recovered butadiene is 99.7%. It can be used as an extractant for recovering high purity isoprene from pyrolysis C5 hydrocarbon. The recovery purity of isoprene is 99%. Because of its high solubility and low vapor pressure to aromatics, the loss rate of extractant is low and the recovery rate of aromatics is high in the process.
3. Reagent level: Integrated circuit, hard disk, etc. require strict control of degreasing, degreasing, dewaxing, polishing, rust-proof and paint removal in metal ions and particulate industries, such as photoresist removal fluid, IC semiconductor industry precision instruments, LCD liquid crystal materials, PCB printed circuit board hardware cleaning; and artificial kidney functional membrane fluid. Solvents produced in pharmaceutical industry such as seawater desalination membrane liquid