公开(公告)号：DE59904211D1

公开(公告)日：2003-03-13

申请号：DE59904211

申请日：1999-10-05

Applicant: BASF AG

Inventor： RUFF DR ,  BAUMANN DIETER ,  AQUILA DR ,  SCHUBERT DR ,  LECHTKEN DR

IPC: B01J31/22 ,  C07B61/00 ,  C07C46/08 ,  C07C46/10 ,  C07C50/02 ,  C07C50/04

Abstract: Purification of 2,3,5-trimethyl-p-benzoquinone (TMQ) or isolation of TMQ from a mixture, by crystallization. An Independent claim is included for preparation of TMQ by catalytic oxidation of TMP with oxygen to give a mixture containing TMQ as well as TMP and/or at least 1 of solvent, catalyst-residue, by-product and intermediate, followed by work-up as above.