Extraction of N-methylpyrrolidone-2

Details Extraction of N-methylpyrrolidone-2 Extraction of N-methylpyrrolidone-2

1982-06-07

1984-09-18

Coughlan, Jr., Paul M.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

260705, C07D207267

Patent

active

044725850

ABSTRACT:
Water or acidified water can be used to extract N-methylpyrrolidone from a mixture containing phenol and N-methylpyrrolidone. In one embodiment of this invention water or acidified water can be used to extract N-methylpyrrolidone from the kettle bottoms of the N-methylpyrrolidone recovery column of a poly(phenylene sulfide) polymerization process.

REFERENCES:
patent: 2802777 (1957-08-01), Lohr
patent: 2939869 (1960-06-01), Carlson
patent: 2944944 (1960-07-01), Clayton
patent: 4013549 (1977-03-01), Bushnell

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