Preparation of polyglycerols

US9956547B2 · kind B2 · utility

Assignees

• CLARIANT INTERNATIONAL LTD · CH
• Universiteit Utrecht Holding B.V. · NL

Inventors

• Anton Kaiser · Basel, CH
• Bert Marc Weckhuysen · Utrecht, NL
• Dirk Leinweber · Kelkheim, DE
• Fiona Kirby · Frankfurt am Main, DE
• Franz-Xaver Scherl · Altötting, DE
• Hans Joachim Metz · Darmstadt, DE
• Pieter Cornelis Antonius Bruijnincx · Utrecht, NL

Key dates

• Filing date: Feb 12, 2015
• Grant date: May 1, 2018
• Expiry date: Feb 12, 2035

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M15/53
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method for preparing polyglycerol, comprising —providing a catalyst salt on a support, the catalyst salt having catalytic activity with respect to an etherification reaction of a polyol selected from the group of glycerol and oligoglycerols, —contacting the catalyst salt on the support with a fluid phase comprising a polyol selected from the group of glycerol and oligoglycerols, —and subjecting the polyol in the fluid phase to an etherification reaction in the presence of the catalyst salt, thereby forming the polyglycerol.