-
公开(公告)号:US5210223A
公开(公告)日:1993-05-11
申请号:US899797
申请日:1992-06-17
IPC分类号: C07C51/265 , C07C51/31
CPC分类号: C07C51/265 , C07C51/313
摘要: The present invention is an improvement to the conventional process for the production of phthalic anhydride. In particular, the present invention enables the crude phthalic anhydride product to be recovered in a more efficient manner.