How N-methylpyrrolidone (NMP) is used in plastics

NMP is an industrial solvent widely used in natural and synthetic plastics, waxes, resins and various paints. It is soluble in polymers such as cellulose derivatives, polyamides, polyimide resins, polyesters, polystyrene, polyacrylonitrile, polyvinyl chloride, polyvinylpyrrolidone acetate, polyurethanes, polycarbonates, polyethers and Many copolymers.

N-Methylpyrrolidone is mixed with the corresponding monomers, conventional organic solvents and water. Therefore, the optimal solvent formulation for a specific application can be found. The following example illustrates the advantages of N-Methyl-alpha-pyrrolidinone in solving problems that can occur in the plastics industry.

For example, NMP is widely used in the prefabrication of semi-permeable membranes. Such membranes are used in separation processes such as ultrafiltration and reverse osmosis. Field water purification can find such applications as hemodialysis.

In addition, products such as linear high-polymer fibers, films, tapes, etc. also bring some technical problems. The difficulty lies in the fact that the solution or plastic product remains corrosion-resistant, harmless, and non-flammable only at normal operating temperatures. N-Methylpyrrolidone is very practical because it is suitable for highly concentrated mixed solutions or the production of plastic compounds from polyamides, polyacrylonitrile, polyvinyl chloride, polystyrene and cellulose triacetate. The same applies to vinyl fluoride homopolymers and heteropolymers at elevated temperatures.