Molded and slab polyurethane foam prepared from double metal cyanide complex-catalyzed polyoxyalkylene polyols and polyols suitable for the preparation thereof

US6066683A · kind A · utility

Assignee

• Lyondell Chemical Worldwide, Inc. · US

Inventors

• Robert W. Beisner · Charleston, US
• Chiu Y. Chan · Wilmington, US
• Thomas Farrell · Marlborough, US
• Danny J. Frich · Cross Lanes, US
• Mark Kinkelaar · Cross Lanes, US
• Jack R. Reese · Hurricane, US
• Donald Frank Rohr · Winfield, US
• Wolfgang Schmidt · Frankfurt, DE
• Andrew Thompson · West Chester, US

Key dates

• Filing date: Apr 3, 1998
• Grant date: May 23, 2000
• Expiry date: Apr 3, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0083
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Copolymer DMC-catalyzed polyoxypropylene polyols which exhibit processing latitude similar to base-catalyzed copolymer analogs and base-catalyzed homopolyoxypropylene analogs may be prepared by oxyalkylation with a mixture of propylene oxide and ethylene oxide such that a finite ethylene oxide content is maintained in the oxyalkylation reactor for the most substantial part of the oxyalkylation, the polyoxypropylene polyol having randomly distributed oxyethylene moieties which constitute 1.5 weight percent or more of the polyol product.