公开(公告)号：DE3736603A1

公开(公告)日：1989-05-11

申请号：DE3736603

申请日：1987-10-29

Applicant: BASF AG

Inventor： KROKER RUPRECHT DR ,  MUELLER GUENTHER DR ,  HOFMANN ERNST DR

IPC: C07D207/26 ,  C07D207/267

公开(公告)号：DE3636754A1

公开(公告)日：1988-05-05

申请号：DE3636754

申请日：1986-10-29

Applicant: BASF AG

Inventor： ZINKE-ALLMANG HELMUT DR ,  HOFFMANN HERWIG DR ,  SCHEIDMEIR WALTER DR ,  SCHAEFER EBERHARD ,  MUELLER GUENTHER DR

IPC: C07C67/08 ,  C07C67/54 ,  C07C69/14

Abstract: Process for the continuous preparation of alkyl acetates by reaction of acetic acid with C3- to C5-alkanols in the presence of acidic catalysts, in which an acetic acid content of 5 to 12 mol per mole of alkanol is maintained in the starting mixture of acetic acid and the alcohol, which mixture is added to the esterification vessel in which the esterification is carried out at temperatures of 50 to 100@C.

公开(公告)号：DE3536263A1

公开(公告)日：1987-04-16

申请号：DE3536263

申请日：1985-10-11

Applicant: BASF AG

Inventor： MUELLER GUENTHER DR ,  RAMSTEINER ROLF ,  GRAF FRITZ DR ,  HUPFER LEOPOLD DR

IPC: C07C47/127 ,  C07C45/00 ,  C07C45/79 ,  C07C67/00 ,  C07C67/38

Abstract: An aqueous glyoxal solution is decolorized by a process in which the said solution is passed over granulated active carbon which is arranged in a fixed bed and whose differential pore radius distribution has a maximum of from 10 to 100 A, the Peclet number being from 500 to 5000, the decolorized glyoxal solution is discharged, the active carbon bed is then regenerated by treating it with an aqueous solution of an alkaline agent and then with an aqueous acid, and further glyoxal solution to be decolorized is passed over the active carbon regenerated in this manner.