Polyester-polyether block copolymers

US6753402B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Stephan Bauer · Ostercappeln, DE
• Georg Heinrich Grosch · Bad Dürkheim, DE
• Gerlinde Tischer · Ruhland, DE
• Kathrin Harre · Dresden, DE
• Eva Baum · Schwarzheide, DE
• Thomas Ostrowski · Mannheim, DE
• Reinhard Lorenz · Schifferstadt, DE
• Regina Pretzsch · Schwarzheide, DE
• Michael Pcolinski · Bloomfield, US
• Stefan Dinsch · Schipkau, DE
• Inge Rotermund · Ortrand, DE

Key dates

• Filing date: Apr 10, 2002
• Grant date: Jun 22, 2004
• Expiry date: Apr 10, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2130/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyester-polyether block copolymers can be prepared by catalytic addition of alkylene oxides onto H-functional initiator substances, using polyester alcohols as H-functional initiator substances and multimetal cyanide compounds as catalysts.