Process for the recovery of .epsilon.-caprolactam from a distill

Details Process for the recovery of .epsilon.-caprolactam from a distill Process for the recovery of .epsilon.-caprolactam from a distill

1977-12-28

1979-05-08

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D20116

Patent

active

041536002

ABSTRACT:
A method of recovering .epsilon.-caprolactam from the residue remaining from the distillation of impure .epsilon.-caprolactam wherein the residue is treated with sulphuric acid or oleum at a temperature between about 80.degree. C. and about 140.degree. C. and the resultant mixture neutralized. The lactam is then extracted with an organic solvent with the lactam then recovered from the resultant solution.

REFERENCES:
patent: 2221396 (1940-11-01), Cass
patent: 2758991 (1956-08-01), Kretzers et al.
patent: 3852272 (1974-12-01), De Rooij et al.

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