METHOD FOR RECOVERING THE COMPONENTS OF A COAGULATION BATH USED IN THE SPINNING OF POLYVINYL CHLORIDE

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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Bibliographic Details
Main Authors PAOLO MELACINI, SILVIO TREVISI
Format Patent
LanguageEnglish
Published 22.04.1969
Subjects
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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Summary: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.
Bibliography:Application Number: USD3440148