Jane Ellen Godlewski,Janette Villalobos Lingoes,Juan Esteban Velasquez,Dimitris Ioannis Collias
申请号：
US15689278
公开号：
US20170362158A1
申请日:
2017.08.29
申请国别(地区):
US
年份:
2017
代理人:
摘要：
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 thereof. The purification includes some or all of the following processes: extraction, drying, distillation, and melt crystallization. The produced glacial or crude acrylic acid contains hydroxypropionic, hydroxypropionic acid derivatives, or mixtures thereof as an impurity.
