Removal of impurities from n-methyl-pyrrolidone using highly pur

Details Removal of impurities from n-methyl-pyrrolidone using highly pur Removal of impurities from n-methyl-pyrrolidone using highly pur

1986-06-16

1989-06-06

Hollrah, Glennon H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

502414, 502415, 502416, C07D20738

Patent

active

048373389

ABSTRACT:
N-methyl pyrrolidone solvent (hereinafter NMP) used to extract aromatic components from lubricating oil distillates is purified by contacting the solvent with activated alumina.

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