N-methylpyrrolidone, also called: NMP; 1-methyl-2pyrrolidone; N-methyl-2-pyrrolidone. Colorless transparent oily liquid with slight amine odor. Low volatility, good thermal and chemical stability, and can volatilize with water vapor. It is hygroscopic. Sensitive to light. It is easily soluble in water, ethanol, ether, acetone, ethyl acetate, chloroform and benzene, and can dissolve most organic and inorganic compounds, polar gases, natural and synthetic polymer compounds. N-methylpyrrolidone is widely used in industries such as lithium batteries, medicine, pesticides, pigments, cleaning agents, and insulating materials.
High-precision electronics, circuit boards, lithium batteries, etc., cleaning agents: degreasing, degreasing, dewaxing, polishing, rust prevention, paint removal and other high-end coatings, inks, and pigments have low toxicity, high boiling point, strong dissolving power, non-flammable, It is biodegradable, recyclable, safe to use, and suitable for multiple formulation uses.
NMP is a highly efficient and selective solvent, non-toxic, high boiling point, low corrosiveness, high solubility, low viscosity, low volatility, good stability, easy recycling and other advantages. The uses of NMP in the electronics industry are mainly as follows:
(1) NMP is used as a solvent for polyvinylidene fluoride, etc., and as an electrode auxiliary material for lithium ion batteries.
(2) It can be used for photoresist removal solution and LCD liquid crystal material production;
(3) Solvents used in pharmaceutical production;
(4) Cleaning of precision instruments and circuit boards in the semiconductor industry.
Dirty methyl pyrrolidone used in the lithium electronic battery industry can be recycled through the Calstar solvent recovery system and vacuum decompression system. Because of its relatively high boiling point, direct recovery methods cannot be used. Vacuum decompression can reduce the recovery heating temperature, ensure the recovery quality, and improve the recovery safety factor.
