Coagulation of biopolymers from ionic liquid solutions using CO2

US9663589B2 · kind B2 · utility

Assignees

• The Board of Trustees of The University of Alabama · US
• The Intellectual Property Office of Institute of Process Engineering, Chinese Academy of Sciences · CN

Inventors

• Robin D. Rogers · Tuscaloosa, US
• Patrick S. Barber · Tuscaloosa, US
• Chris S. Griggs · Vicksburg, US
• Gabriela Gurau · Tuscaloosa, US
• Xingmei Lu · Beijing, CN
• Suojiang Zhang · Beijing, CN

Key dates

• Filing date: Feb 13, 2014
• Grant date: May 30, 2017
• Expiry date: Feb 13, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/54
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed herein are processes for providing a biopolymer from a biomass or source of chitin using ionic liquids. The processes involve contacting a biomass or source of chitin with an ionic liquid to produce a biopolymer comprising solution and precipitating the biopolymer from the solution with supercritical CO2, gaseous CO2, or combinations thereof.