Separation of heteropoly compounds from polyethers, polyesters and polyether esters

US5951829A · kind A · utility

Assignee

• BASF SE

Inventors

• Hans-Jurgen Weyer · Frankenthal (Pfalz), DE
• Rolf Fischer · Heidelberg, DE
• Gerhard Jeschek · Havelsee, DE
• Herbert Muller · Bischofswerda, DE

Key dates

• Filing date: Mar 27, 1997
• Grant date: Sep 14, 1999
• Expiry date: Mar 27, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method of separating heteropoly compounds from mixtures of polyethers, polyesters and/or polyether esters, a protic component and heteropoly compounds, wherein the protic component is removed from the mixture and subsequently separating off the heteropoly compound as a separate phase. The polymer phase which remains is preferably brought into further contact with a solid adsorbent that is capable of adsorbing heteropoly compounds.