31METHOD FOR PRODUCING BIORESOURCED ACRYLIC ACID FROM GLYCEROLABSTRACT5An aim of the present invention is to produce, from glycerol, a bioresourced acrylic acid, that is to say an acrylic acid essentially based on a carbon source of natural origin,corresponding to a degree of purity corresponding to the requirements of the users.The process according to the invention comprises a final stage of purification of theto acrylic acid by fractional crystallization applied to one of the acrylic acid fractions resulting from the purification line employed after having extracted the acrylic acid, obtained from glycerol, by countercurrentwise absorption with a heavy hydrophobic solvent.15No suitable figure.
