Workup of distillation residues from the purification of caprola

Details Workup of distillation residues from the purification of caprola Workup of distillation residues from the purification of caprola

1988-08-25

1990-01-09

Bascomb, Wilbur

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

203 49, 203 52, 203 69, 203 70, 203 73, 203 79, 203 85, 203 92, 203 96, 540540, B01D 334, C07D20116

Patent

active

048926248

ABSTRACT:
Distillation residues from the purification of caprolactam are worked up by heating in the presence of sodium hydroxide or potassium hydroxide and in the presence of a high-boiling hydrocarbon at from 250.degree. to 500.degree. C. and continuously removing the caprolactam.

REFERENCES:
patent: 3037032 (1962-05-01), Kampschmidt
patent: 3324011 (1967-06-01), Baum et al.
patent: 3792045 (1974-02-01), Henn et al.
patent: 3839324 (1974-10-01), Schultze et al.
patent: 4301073 (1981-11-01), Fuchs et al.
patent: 4326925 (1982-04-01), Senni et al.
patent: 4582642 (1986-04-01), Crescentini et al.

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