公开(公告)号：WO2018197539A1

公开(公告)日：2018-11-01

申请号：PCT/EP2018/060549

申请日：2018-04-25

Applicant: SOLVAY SA

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

IPC: C07C51/64 ,  C07C53/18 ,  A01N29/00

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.