Purification of N-methylpyrrolidone

Details Purification of N-methylpyrrolidone Purification of N-methylpyrrolidone

1982-06-07

1985-04-09

Hollrah, Glennon H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

528388, 568749, 260705, C07D207267

Patent

active

045103160

ABSTRACT:
Phenol is extracted with a chlorinated aromatic extractant, such as p-dichlorobenzene, from an aqueous mixture containing phenol and N-methylpyrrolidone. In an embodiment of this invention the purified N-methylpyrrolidone is recycled for use in a poly(phenylene sulfide) polymerization process.

REFERENCES:
patent: 2199786 (1940-05-01), Dierichs et al.
patent: 3658659 (1972-04-01), Cottle
patent: 3697487 (1972-10-01), Cines
patent: 4362864 (1982-12-01), Idel et al.

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