公开(公告)号：DE102004045029A1

公开(公告)日：2006-03-16

申请号：DE102004045029

申请日：2004-09-15

Applicant: BASF AG

Inventor： ROSKE ECKHARD ,  PUETTER HERMANN ,  RICHTER INGO

IPC: C25B3/23 ,  C07C43/32

Abstract: Preparation of glyoxalic acid alkyl ester dialkyl acetal (I) comprises electrochemical oxidation of glyoxaldialkylacetal in the presence of alkyl alcohol and ionogenic halogenide.

公开(公告)号：DE10340737A1

公开(公告)日：2005-03-31

申请号：DE10340737

申请日：2003-09-04

Applicant: BASF AG

Inventor： HEYDRICH GUNNAR ,  RICHTER INGO ,  KRUG THOMAS

IPC: C07C41/60 ,  C25B3/23 ,  C07C41/42 ,  C07C43/23

Abstract: A partition-wall distillation column with 30-150 theoretical plates is used for working up the crude product from the electrochemical oxidation of 1,1,2,2-tetramethoxyethane with methanol in a liquid electrolyte to give trimethyl orthoformate. A method for the distillative work-up of the product (a) of the electrochemical oxidation of 1,1,2,2-tetramethoxyethane (TME) with methanol to give trimethyl orthoformate (TMOF) in a liquid electrolyte. This is carried out in a partitioned column (TK) with 30-150 theoretical plates (TPL), containing a partition in the longitudinal direction of the column so as to form a common upper zone (1), a common lower zone (6), a feed part (2, 4) with a concentrating section (2) and a stripper section (4), and a take-off part (3, 5) with a stripper section (3) and a concentrating section (5). The crude product (a) is fed into the middle part of the feed zone (2, 4), TMOF is taken off as a side-stream from the middle of the take-off zone (3, 5), low-boiling fraction(s) are taken off from the top (1) and high-boilers are taken of at the bottom (6).

公开(公告)号：DE10318698A1

公开(公告)日：2004-11-18

申请号：DE10318698

申请日：2003-04-24

Applicant: BASF AG

Inventor： MAASE MATTHIAS ,  GRIESBACH ULRICH ,  RICHTER INGO

IPC: C07F9/28 ,  C07F9/50 ,  C25B3/04 ,  C07F9/53