公开(公告)号：US20200223778A1

公开(公告)日：2020-07-16

申请号：US16607846

申请日：2018-04-25

Applicant: SOLVAY SA

Inventor： Jean-Marie BLAUDE ,  Benoit GOSSELIN ,  Alain LAMBERT ,  Mathias MAREK ,  Harald KRUEGER ,  Jan Schostag ,  Miriam Heyd

IPC: C07C51/64

Abstract: The present invention concerns a process for the reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid. The invention further concerns a process for the manufacture of carboxylic acid anhydrides comprising the process for the reduction of content of carboxylic acids and derivatives thereof from oleum, disulfuric acid or concentrated sulfuric acid.