Process for the work-up of the mother liquors from the preparati

Details Process for the work-up of the mother liquors from the preparati Process for the work-up of the mother liquors from the preparati

1986-11-24

1988-08-09

Gerstl, Robert

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548167, 548168, C07D27736

Patent

active

047629312

ABSTRACT:
An improved work-up of aqueous mother liquors which originate from the oxidative preparation of benzothiazolylsulphenamides and which contain unreacted amine or a low-boiling alcohol employed as solubilizer, or both, the work-up being carried out in such a fashion that the mother liquor is saturated by additives until two phases form, the phases are separated from one another, the aqueous phase is extracted with further alcohol or amine, amine, alcohol and the extracted components are isolated from the combined organic phases, and amine or alcohol dissolved in the aqueous phase is removed therefrom by distillation.

REFERENCES:
patent: 2268467 (1941-12-01), Ashworth
patent: 2809202 (1957-10-01), Schoene et al.
patent: 2875208 (1959-02-01), D'Amico
patent: 2930794 (1960-03-01), Lober et al.

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