Use of N-methylpyrrolidone

NMP is an excellent advanced solvent, a highly selective and stable polar solvent. It has the advantages of low toxicity, high boiling point, strong solubility, non-flammability, biodegradability, recyclability, safety in use, and applicability to a variety of formulations for high-precision electronics, circuit boards, lithium batteries, cleaning agents: degreasing, degreasing, dewaxing, polishing, rust removal, paint removal and other advanced coatings, inks, and pigments.

The sources of NMP can be divided into two categories: synthetic NMP and recycled NMP. Synthetic NMP refers to NMP products obtained by chemical synthesis. The industrial production route is to produce NMP products by condensation of γ-butyrolactone (GBL) and monomethylamine as raw materials; recycled NMP refers to the recycling of NMP waste liquid used as a solvent after purification.

The NMP industry does not have a high entry threshold. Due to the continued prosperity of the downstream lithium battery industry, more and more companies have begun to produce NMP, and the scale of the industry is getting larger and larger. Most of the NMP used as a solvent can be recycled and reused, which can save costs and reduce the impact on the environment.

In the past 5 to 10 years, due to the rapid development of the lithium battery industry, the scale of NMP consumption has grown rapidly. In addition to being used in the field of lithium-ion batteries, NMP can be used as a photoresist stripping liquid and a semiconductor display panel cleaning agent in the field of electronic chemicals. In polymer synthesis, it can be used as a reaction solvent for special polymers such as para-aramid, polyphenylene sulfide (PPS) and polyimide (PI).