公开(公告)号：US3580930A

公开(公告)日：1971-05-25

申请号：US3580930D

申请日：1967-12-27

Applicant: KAO CORP

Inventor： MIYA BUNJI ,  HOSHINO FUMIRO ,  MATUDA MORIO

IPC: B01J23/86 ,  C07D315/00 ,  C07D5/06

CPC classification number: C07D315/00 ,  B01J23/868

Abstract: A PROCESS FOR PRODUCING GAMMA-BUTYROLACTONE BY HYDROGENATING MALEIC ANHYDRIDE, MALEIC ACID, FUMARIC ACID, SUCCINIC ANHYDRIDE OR SUCCINIC ACID OR MIXTURES THEREOF, IN THE GAS PHASE, IN THE PRESENCE OF A ZN-CU-CR CATALYST, IN ORDER TO PRODUCE HIGH YIELDS OF GAMMA-BUTYROLACTONE AND MINIMIZE THE FORMATION OF BY-PRODUCTS.

公开(公告)号：DE1668348A1

公开(公告)日：1972-03-30

申请号：DE1668348

申请日：1967-12-21

Applicant: KAO CORP

Inventor： MIYA BUNJI ,  HOSHINO FUMIRO ,  MATUDA MORIO

IPC: B01J23/86 ,  C07D315/00 ,  C07D5/06