Carbon dioxide removal and ionic liquid compounds useful therein

US8721770B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Thomas Foo · Rockville, US
• Mark Andrew Harmer · Kennett Square, US
• Keith W. Hutchenson · McKeesport, US
• Christopher P. Junk · Wilmington, US
• Berlyn R. Mellein · Wilmington, US
• Aaron Minter · Wilmington, US
• Mark Brandon Shiflett · Lawrence, US

Key dates

• Filing date: Dec 4, 2009
• Grant date: May 13, 2014
• Expiry date: Jun 8, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker; and to methods of carbon dioxide removal in which they may be used.