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1. (WO2015124856) METHOD FOR THE PRODUCTION OF BIO-SOURCED ACRYLIC ACID

Pub. No.:    WO/2015/124856    International Application No.:    PCT/FR2015/050371
Publication Date: Fri Aug 28 01:59:59 CEST 2015 International Filing Date: Tue Feb 17 00:59:59 CET 2015
IPC: C07C 45/52
C07C 51/44
C07C 51/487
C07C 57/04
C07C 47/22
Applicants: ARKEMA FRANCE
Inventors: DEVAUX, Jean-François
FAUCONET, Michel
JAIN, Sandeep
TLATLIK, Stephen
Title: METHOD FOR THE PRODUCTION OF BIO-SOURCED ACRYLIC ACID
Abstract:
The present invention relates to the manufacture of bio-sourced acrylic acid using glycerol as a raw material, the term bio-sourced acid indicating that the acrylic acid is essentially produced from a carbon source of natural origin. The present invention concerns, more particularly, a method for recovery and purification of said acid in a compact facility without the use of an organic solvent, as well as a method for production of acrylic acid from glycerol which includes this recovery and purification method. The method is based in particular on obtaining a gaseous reaction effluent of raw acrylic acid that minimizes the water to acrylic acid mass ratio, enabling upstream resolution of the essential problems posed by the presence of water and impurities in a solvent-free recovery and purification method.