公开(公告)号：BR9005188A

公开(公告)日：1991-09-17

申请号：BR9005188

申请日：1990-10-16

Applicant: HOECHST AG

Inventor： ROSCHER GUENTER ,  SCHMIDT KARL-HEINZ ,  EICHLER KLAUS ,  HOERSTERMANN PETER ,  GRADL RAINHARD ,  LANGNER HORST

IPC: B01J31/04 ,  B01D3/00 ,  B01D3/14 ,  C07B61/00 ,  C07C67/05 ,  C07C67/055 ,  C07C67/54 ,  C07C67/58 ,  C07C69/14 ,  C07C69/15

Abstract: The invention relates to a process for the isolation of vinyl acetate which involves not combining the bottom product of the recylced gas washings with the water-saturated vinyl acetate but rather introducing it to further multiple distillation columns from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen over catalysts containing palladium or palladium compounds in the gas phase.