Method for purifying a crude PNPNH compound

US9221856B2 · kind B2 · utility

Assignees

• SAUDI BASIC INDUSTRIES CORPORATION · SA
• Linde GmbH · DE

Inventors

• Uwe Rosenthal · Munich, DE
• Bernd H. Müller · Rostock, DE
• Normen Peulecke · Rostock, DE
• Marco Harff · Munich, DE
• Anina Wöhl · Munich, DE
• Andreas Meiswinkel · Munich, DE
• Heinz Bölt · Wolfratshausen, DE
• Wolfgang Muller · Königsfeld, DE
• Abdullah Mohammad Al-Qahtani · Riyadh, SA
• Mohammed H. Al-Hazmi · Riyadh, SA
• Shahid Azam · Riyadh, SA

Key dates

• Filing date: Feb 10, 2014
• Grant date: Dec 29, 2015
• Expiry date: Feb 10, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/62
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for purifying a crude PNPNH compound by metalation and re-protonation.