Back to results
US 2012/0238708 A1Published application
Polyurea compositions and methods of use
AssigneePRC-DeSoto International, Inc.
InventorsStephen J. Hobbs, Juexiao Cai, Marfi Ito, Renhe Lin
Life of this patent
Estimating the term…
Abstract
Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
Claims20
A composition comprising:
- a polyformal-isocyanate prepolymer comprising the reaction products of reactants comprising a polyformal polyol and a first diisocyanate;
- and
- a curing agent comprising an amine.
A composition comprising the reaction products of reactants comprising:
- a polyformal-isocyanate prepolymer comprising the reaction products of a polyformal polyol and a first aliphatic diisocyanate;
- a polythioether-isocyanate prepolymer comprising the reaction products of a polythioether polyol and a second aliphatic diisocyanate;
- and
- an aromatic diamine.
1 more element
Dependencies are inferred from the claim text.