公开(公告)号：MY139761A

公开(公告)日：2009-10-30

申请号：MYPI20031307

申请日：2003-04-09

Applicant: BASF AG

Inventor： PINKOS ROLF DR ,  FISCHER ROLF-HARTMUTH DR ,  MARKUS ROESCH DR ,  BOTTKE NILS DR ,  SCHLITTER STEPHAN DR ,  HESSE MICHAEL DR ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR DR

IPC: C07D307/20 ,  B01J21/08 ,  C07D307/33 ,  B01J23/72 ,  C07B61/00

Abstract: THE PRESENT INVENTION RELATES TO A PROCESS FOR PREPARING UNSUBSTITUTED OR C1-C4-ALKYL-SUBSTITUTED GAMMA-BUTYROLACTONE BY CATALYTIC HYDROGENATION OF MALEIC ACID AND/OR ITS DERIVATIVES IN THE PRESENCE OF CHROMIUM-FREE CATALYST COMPRISING FROM 10 TO 80% BY WEIGHT OF COPPER OXIDE AND FROM 10 TO 90% BY WEIGHT OF AT LEAST ONE CATALYST SUPPORT SELECTED FROM THE GROUP CONSISTING OF SILICON DIOXIDE, TITANIUM DIOXIDE, HAFNIUM DIOXIDE, MAGNESIUM SILICATE, ACTIVATED CARBON, SILICON CARBIDE, ZIRCONIUM DIOXIDE AND ALPHA-ALUMINUM OXIDE.