Process for a continuous production of polyetherols

US8957257B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Vinit Chilekar · Tervuren, BE
• Oliver Bey · Niederkirchen, DE
• Andreas Brodhagen · Schifferstadt, DE
• Achim Löffler · Speyer, DE
• Fatemeh Admadnian · Ludwigshafen, DE
• Ralf Böhling · Griesheim, DE
• Christoph Grossmann · Hamburg, DE
• Ulrich Kammel · Speyer, DE
• Ronald Adelmann · Darmstadt, DE
• Thomas Ostrowski · Mannheim, DE
• Milind Joshi · Jamkhed, IN
• Gerrit Waters · Karlsruhe, DE
• Dirk Meckelnburg · Schifferstadt, DE

Key dates

• Filing date: Jul 18, 2012
• Grant date: Feb 17, 2015
• Expiry date: Aug 7, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/1943
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for a continuous production of a polyetherol first involves reacting a catalyst (5) with an alcohol starter (3) or an alkoxylated precursor, to give a mixture comprising an alcoholate and water. Water is then removed from the mixture. The process further involves feeding the alcoholate into a bubble column and feeding an alkylene oxide into the bottom of a compartment of the bubble column, such that the alkylene oxide rises in the alcoholate. The alkylene oxide then reacts with the alcoholate or a secondary product from the reaction between the alcoholate and alkylene oxide, to give the polyetherol.