Membrane separation of N-methyl pyrrolidone/middle distillate st

Details Membrane separation of N-methyl pyrrolidone/middle distillate st Membrane separation of N-methyl pyrrolidone/middle distillate st

1990-12-31

1991-08-06

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21050036, B01D 6108

Patent

active

050375563

ABSTRACT:
An N-methyl pyrrolidone-containing middle distillate stream is separated by use of a polyethyleneimine membrane which has been cross-linked with a polyisocyanate or a poly(carbonyl chloride) cross-linking agent.

REFERENCES:
patent: 4982051 (1991-01-01), Pasternak et al.

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