公开(公告)号：EP1501778A1

公开(公告)日：2005-02-02

申请号：EP03731081.0

申请日：2003-05-06

Applicant: Invista Technologies S.à.r.l.

Inventor： WHISTON, Keith ,  JONES, Graham, Howard

IPC: C07C51/00

CPC classification number: C07C51/265 ,  C07C63/26

Abstract: A process for the production of a carboxylic acid or its ester by catalytic liquid phase oxidation of a corresponding precursor in acetic acid as solvent, said process comprising: (i) forming a reaction medium comprising acetic acid, oxidation catalyst, precursor and oxidant; (ii) optionally recycling methyl acetate produced from the acetic acid as a by-product back to the reaction medium; (iii) introducing additional methyl acetate and/or methanol into the reaction medium, said additional methyl acetate and/or methanol being additional to any recovered methyl acetate recycled back to the reaction medium.