Alkoxylations in microstructured capillary reactors

US7858829B2 · kind B2 · utility

Assignee

• EVONIK GOLDSCHMIDT GMBH · DE

Inventors

• Roland Hubel · Essen, DE
• Georg Markowz · Alzenau, DE
• Manfred Recksik · Essen, DE
• Markus Rudek · Büttelborn, DE
• Dietmar Wewers · Bottrop, DE
• Florian Zeller-Schuldes · Niederrodenbach, DE

Key dates

• Filing date: Mar 17, 2005
• Grant date: Dec 28, 2010
• Expiry date: Nov 14, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00891
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process and to an apparatus for preparing polyether alcohols by alkoxylating alcohols, and also long-chain polyether alcohols having a narrow product distribution. The process is preferably carried out continuously in the liquid phase in a microstructured reactor. An alkylene oxide or different alkylene oxides are metered at one or more points into the channels of the microreactor. The channels are cooled with the aid of a cooling medium or heated with the aid of a heating medium.