Verfahren zur Wiedergewinnung von Cyclohexanon aus den Koagulierbaedern,die beim Verspinnen von Polyvinylchlorid verwendet werden

1,126,501. Recovering cyclohexanone. A.C.S.A. APPLICAZIONI CHIMICHE S.p.A. 21 Jan., 1966 [27 Jan., 1965], No. 2916/66. Heading C2C. [Also in Division B5] Cyclohexanone is recovered from a coagulation bath (used for wet-spining P.V.C.), by distilling the bath to leave an aq. emulsion and separating o...

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Hauptverfasser:	TREVISI,SILVIO, MELACINI,PAOLO
Format:	Patent
Sprache:	ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC CHEMISTRY SPINNING TEXTILES
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Zusammenfassung:	1,126,501. Recovering cyclohexanone. A.C.S.A. APPLICAZIONI CHIMICHE S.p.A. 21 Jan., 1966 [27 Jan., 1965], No. 2916/66. Heading C2C. [Also in Division B5] Cyclohexanone is recovered from a coagulation bath (used for wet-spining P.V.C.), by distilling the bath to leave an aq. emulsion and separating organic and aq. phases thereof by bringing the pH of either the initial bath or the emulsion to at least 8, e.g. by use of an added alkaline hydroxide or salt.