公开(公告)号：NO160509C

公开(公告)日：1989-04-26

申请号：NO851895

申请日：1985-05-13

Applicant: BASF AG

Inventor： HOHENSCHUTZ HEINZ ,  SCHMIDT JOHANNES E ,  KIEFER HANS

IPC: B01J31/00 ,  C07C53/02 ,  B01J31/02 ,  C07B61/00 ,  C07C27/00 ,  C07C27/02 ,  C07C51/00 ,  C07C51/09 ,  C07C67/00

Abstract: 1. A process for the preparation of anhydrous or substantially anhydrous formic acid by hydrolyzing methyl formate in the presence of a formamide and then obtaining the formic acid from the hydrolysis mixture by distillation, wherein the hydrolysis is carried out in the presence of 0.5-3 moles, per mole of methyl formate, of a water-soluble formamide of the formula I see diagramm : EP0161544,P5,F1 where R**1 and R**2 are each alkyl or together form an alkylene group, giving a 5-membered to 7-membered ring, with the proviso that the sum of the carbon atoms in R**1 and R**2 is 5 or 6 and that, in the case of an alkylene group, a carbon atom which is not directly bonded to the N atom can be replaced by an oxygen atom.

公开(公告)号：FI865079A0

公开(公告)日：1986-12-12

申请号：FI865079

申请日：1986-12-12

Applicant: BASF AG

Inventor： EICHHORN HANS-DIETER ,  MENGER VOLKMAR ,  REUTER PETER ,  SCHMIDT JOHANNES E ,  SCHWARZMANN MATTHIAS

IPC: C07C51/265 ,  C07D

公开(公告)号：NO783298L

公开(公告)日：1979-04-03

申请号：NO783298

申请日：1978-09-28

Applicant: BASF AG

Inventor： HOHENSCHUTZ HEINZ ,  SCHMIDT JOHANNES E ,  KIEFER HANS

IPC: C07C53/02 ,  B01J31/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/09 ,  C07C67/00 ,  C07C