公开(公告)号：DE2502834B1

公开(公告)日：1976-06-24

申请号：DE2502834

申请日：1975-01-24

Applicant: BASF AG

Inventor： HETZEL ECKHARD DIPL-ING ,  WEITZ HANS-MARTIN DIPL-CHEM DR ,  VOGEL LUDWIG ,  HARTIG JUERGEN DIPL-CHEM DR

IPC: B01J23/64 ,  B01J27/02 ,  C07C69/16

Abstract: Butene diol diacetates, esp. 2-butene-1,4-diol-1,4 (I) and t-butene-3,4-diol (II) diacetates are prepd. by reacting butadiene with O2 and HOAc in liquid or gaseous phase in the presence of a solid catalyst contg. Pt and at least one of As, P, Sb, Se or Te. The diacetates are inters. for butene diol and butanediol and 3,4-butene diol diacetate is an inter. for vitamins and other biologically active cpds.

公开(公告)号：DE2502834C2

公开(公告)日：1977-02-17

申请号：DE2502834

申请日：1975-01-24

Applicant: BASF AG

Inventor： HETZEL ECKHARD DIPL-ING ,  WEITZ HANS-MARTIN DIPL-CHEM DR ,  VOGEL LUDWIG ,  HARTIG JUERGEN DIPL-CHEM DR

IPC: B01J23/64 ,  B01J27/02

公开(公告)号：DE2334916A1

公开(公告)日：1975-01-30

申请号：DE2334916

申请日：1973-07-10

Applicant: BASF AG

Inventor： VOGEL LUDWIG ,  ROTERMUND GERHARD W DR ,  HETZEL ECKHARD DIPL-ING ,  CHRISTOPH DIPL-ING DR HORN HAN

IPC: C07D209/48 ,  D07B7/06

Abstract: 1465756 Phthalamide BASF AG 9 July 1974 [10 July 1973] 30292/74 Heading C2C A continuous process for the preparation of phthalimide comprises reacting phthalic anhydride with ammonia at elevated temperature, washing the off-gas with a melt which contains at least 70% by weight of phthalimide, at a temperature of not less than 210‹ C., and feeding the melt to the reaction. Preferably the reaction is carried out in countercurrent and the wash column is combined with the reactor by using a tray column, the phthalic anhydride melt being fed continuously to one of the middle trays, the ammonia being introduced at the bottom of the column, and the phthalimide melt, as the wash fluid, being introduced at the top of the column.