公开(公告)号：DE19632204A1

公开(公告)日：1998-02-12

申请号：DE19632204

申请日：1996-08-09

Applicant: BASF AG

Inventor： HACKMANN CLAUS DR ,  ACKER MICHAEL DR ,  HENNING GEORG DR ,  MENSCH SIEGFRIED DR

IPC: C09B5/62 ,  C07D471/06

Abstract: Production of N,N'-di-C1-C4-alkyl perylene-3,4,9,10-tetracarboxylic acid diimides (I) by the reaction of perylene-3,4,9,10-tetracarboxylic acid diimide (II) with a C1-C4-alkyl halogenide, said reaction being effected in a dipolar-aprotic organic solvent in the presence of an anorganic base.

公开(公告)号：MY136178A

公开(公告)日：2008-08-29

申请号：MYPI20042125

申请日：2004-06-02

Applicant: BASF AG

Inventor： KLUMPE MARKUS DR ,  BALDENIUS KAI-UWE DR ,  HACKMANN CLAUS DR ,  LAUTERBACH ARNULF DR ,  SEELMANN-EGGEBERT HANS-PETER DR ,  ZIPPLIES MATTHIAS DR

IPC: C08G65/30 ,  C08G65/26

Abstract: A PROCESS IS DESCRIBED FOR PURIFYING POLYALKYLENE GLYCOLS OBTAINED BY ADDING ALKYLENE OXIDE TO ALKYLENE GLYCOL, IN WHICH, AFTER ADDITION IS COMPLETE, THE RESULTANT POLYALKYLENE GLYCOL IS TREATED AT A PH OF >7 WITH A BLEACHING AGENT SELECTED FROM THE GROUP CONSISTING OF PEROXIDES, PERACIDS, PERCARBONATES, PERBORATES, PEROXODISULFATES OR OXYGEN, IN EACH CASE WITH OR WITHOUT ADDITION OF A BLEACHING ACTIVATOR.THE PROCESS IS SUITABLE IN PARTICULAR FOR PREPARING POLYETHYLENE GLYCOL HAVING MOLAR WEIGHTS FROM 196 TO 203 G/MOL WHICH MEETS REQUIREMENTS OF PHARMACOPEIAS.