Diamine having tert-alkylamino group and primary amino group for use in gas scrubbing

US10214482B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Thomas Ingram · Keller, US
• Marion da Silva · Ludwigshafen, DE
• Georg Sieder · Bad Dürkheim, DE

Key dates

• Filing date: Aug 20, 2015
• Grant date: Feb 26, 2019
• Expiry date: Aug 20, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/151
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A compound of the general formula (I) in which R1, R2 and R3 are independently selected from C1-4-alkyl and C1-4-hydroxyalkyl; each R4 is independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl; each R5 is independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl; m is 2, 3, 4 or 5; n is 2, 3, 4 or 5; and o is an integer from 0 to 10. A preferred compound of the formula (I) is 2-(2-tert-butylaminoethoxy)ethylamine. Absorbents comprising a compound of the formula (I) have rapid absorption of carbon dioxide from fluid streams and are also suitable for processes for the simultaneous removal of H2S and CO2, where given H2S limits have to be observed but complete removal of CO2 is not required.