Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid

USPTO Patent Application US 2018/0127348 A1
Application Date: May 10th, 2018

ABSTRACT

Processes for the purification of bio-based acrylic acid to crude and glacial acrylic acid are provided. The bio-based acrylic acid is produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures...
Application Number:
15/861,702
International Classification:
C07C 51/48 (20060101); C08F 2/10 (20060101); C07C 57/04 (20060101); A61F 13/534 (20060101); B01J 27/16 (20060101); C07C 51/44 (20060101); C07C 51/377 (20060101); C07C 51/09 (20060101); B01J 37/08 (20060101); B01J 37/04 (20060101); B01J 37/00 (20060101); B01J 35/02 (20060101); B01J 27/25 (20060101); B01J 27/198 (20060101); B01J 27/195 (20060101); B01J 27/188 (20060101); B01J 27/187 (20060101); B01J 27/186 (20060101); B01J 27/185 (20060101); B01J 27/18 (20060101); A61F 13/53 (20060101)
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CLAIMS

What is claimed is:

1. A glacial acrylic acid composition wherein a portion of the remaining impurities in said glacial acrylic acid composition is lactic acid; wherein said glacial acrylic acid composition has a bio-based content greater than about 3%; and wherein said glacial acrylic acid composition is produced by the steps comprising: j. Providing...

DESCRIPTION

FIELD OF THE INVENTION

The present invention generally relates to the production of crude and glacial acrylic acid from bio-based acrylic acid produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof. More specifically, the invention relates to the purification of bio-based acrylic acid to crude and glacial acrylic acid using some or all...
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