公开(公告)号：US3865846A

公开(公告)日：1975-02-11

申请号：US10624471

申请日：1971-01-13

Applicant: BASF AG

Inventor： SCHULZ GERHARD ,  MATTHIAS GUENTHER ,  KASPER WERNER ,  HAARER ERICH

IPC: C07C45/88 ,  C07C49/88 ,  C07D315/00 ,  C07D3/00

CPC classification number: C07D315/00 ,  C07C45/88 ,  C07C49/88

Abstract: The continuous production of diketene by dimerizing ketene in diketene containing ketene as a solvent using specific temperature conditions and concentrations. Diketene prepared by the process is a starting material for the production of acetoacetic esters, dyes, solvents and pesticides.

Abstract translation: 通过使用特定的温度条件和浓度将乙烯酮二烯化在含乙烯酮作为溶剂的双烯酮中连续生产双烯酮。