Amino-terminated polybutadienes

US6831136B2 · kind B2 · utility

Assignee

• Sartomer Technology Company, Inc. · US

Inventors

• Herbert Chao · Paoli, US
• Nan Tian · Wilmington, US
• Alain Drexler · Philadelphia, US
• John Schmidhauser · Paoli, US

Key dates

• Filing date: Jan 14, 2003
• Grant date: Dec 14, 2004
• Expiry date: Jan 25, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G73/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Improved amine-terminated polybutadienes (ATPBs) having one or two terminal amino groups, are prepared by cyanoalkylating a hydroxyl-terminated polybutadiene by Michael addition of acrylonitrile in the presence of a base, forming nitrile termination, followed by hydrogenation in the presence of a Group VIII metal as catalyst. The ATPBs may be hydrogenated or partially hydrogenated, either prior to or after the amination, to saturate or partially saturate the polymers. Polyureas, polyurethanes, crosslinked epoxies, polyamides, and other derivatives with improved properties can be prepared from the ATPBs. The resultant derivatives are useful in liquid binders for braking systems, electric potting compositions, coatings, adhesives, sealants, and water proofing membranes, for example.