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C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
C07C45/87—Preparation of ketenes or dimeric ketenes
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FR57003D1941-12-051941-12-05Procédé d'obtention du cétène notamment en vue de la fabrication d'acide acétique et d'éthers acétiques
ExpiredFR57003E
(fr)