摘要：

The present invention relates to the manufacture of a polymer-grade bio-based acrylic acid, said polymer grade being defined by a minimum C content and by the content-limiting thresholds for impurities detrimental to the polymerization methods, in particular total aldehydes, protoanemonin, maleic anhydride, and non-phenolic polymerization inhibitors. One aim of the invention is a method for manufacturing said acid from glycerol as a raw material, said method including a step of extracting the acrylic acid by means of a heavy hydrophobic solvent. The invention also relates to the use of said acid for manufacturing superabsorbent materials or for manufacturing polymers or copolymers by polymerizing derivatives of said acid in the form of ester or amide.

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