Flexible polyamines, flexible amine-terminated adducts, compositions thereof and methods of use

US8816044B2 · kind B2 · utility

Assignee

• PRC-DESOTO INTERNATIONAL, INC. · US

Inventors

• Stephen J. Hobbs · Gilbert, US
• Marfi Ito · Culver City, US
• Juexiao Cai · Santa Clarita, US
• Chandra Rao · Valencia, US
• Renhe Lin · Santa Clarita, US

Key dates

• Filing date: Sep 21, 2011
• Grant date: Aug 26, 2014
• Expiry date: May 16, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2003/1034
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed are flexible polyamines, flexible amine-terminated polyformal adducts, flexible-amine-terminated polythioether adducts, compositions comprising flexible polyamines and isocyanate-terminated prepolymers, and compositions comprising flexible amine-terminated adducts and isocyanate-terminated prepolymers. Uses of the compositions as sealants, and particularly as aerospace sealants, are also disclosed.