Suspension of multimetal cyanide compounds, their preparation and their use

US6800583B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Georg Heinrich Grosch · Bad Dürkheim, DE
• Kathrin Harre · Dresden, DE
• Jörg Erbes · Karlsruhe, DE
• Reinhard Lorenz · Schifferstadt, DE
• Stephan Bauer · Ostercappeln, DE
• Thomas Ostrowski · Mannheim, DE
• Eva Baum · Schwarzheide, DE
• Dieter Junge · Bischofswerda, DE
• Edward M. Dexheimer · Grosse Ile Township, US

Key dates

• Filing date: Jun 2, 1999
• Grant date: Oct 5, 2004
• Expiry date: Jun 2, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/2663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Catalyst suspensions for the ring-opening polymerization of alkylene oxides comprisea) at least one multimetal cyanide compound having a crystalline structure and a content of platelet-shaped particles of at least 30% by weight, based on the multimetal cyanide compound, andb) at least one organic complexing agentc) water and/ord) at least one polyether and/ore) at least one surface-active substance, with the proviso that at least component a) and at least two of the components b) to e) have to be present.