Amino-terminated polybutadienes

US6855776B2 · kind B2 · utility

Assignee

• Sartomer Technology Company, Inc. · US

Inventors

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

Key dates

• Filing date: Nov 20, 2002
• Grant date: Feb 15, 2005
• Expiry date: Jan 20, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/911
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Improved amine-terminated polybutadienes (ATPBs) having one or two terminal groups of the formula —CHRNH2 wherein R is C1-C20 alkyl, are prepared by aminating a secondary hydroxyl-terminated polybutadiene having no ether groups. The ATPBs may be hydrogenated or partially hydrogenated, either prior to or after the animation, to saturate or partially saturate the polymers. Preferred ATPBs are of the formula H2NCHR-(polybutadiene)-CHRNH2 wherein R is C1-C20 alkyl. 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.