Process for the purification of epsilon-caprolactam

Details Process for the purification of epsilon-caprolactam Process for the purification of epsilon-caprolactam

1977-09-09

1979-04-10

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D20116

Patent

active

041487931

ABSTRACT:
Process for the removal of residues of solvent from crystallized .epsilon.-caprolactam, wherein the major quantity of solvent is removed in a first stage by distillation in the presence of water in an amount so that the water content of the residue of the first stage is from 0.5 to 6% by weight, and in a second stage by distilling water and any residues of solvent still present.

REFERENCES:
patent: 2221369 (1940-11-01), Cass
patent: 3755305 (1973-08-01), Schwarz et al.
patent: 3792045 (1974-02-01), Henn et al.
patent: 3794647 (1974-02-01), Henn et al.
patent: 3882102 (1975-05-01), Immel et al.
patent: 3944543 (1976-03-01), Goettsch et al.

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