Uretdione based polyurethane compositions
AssigneesCovestro LLC, Covestro Deutschland AG
InventorsAlan Ekin, David P. Zielinski, Dorota Greszta-Franz, Florian Johannes Stempfle
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Abstract
The present invention provides a composition comprising a polyuretdione resin; and a blocked amine; and optionally, an additive package (e.g. flow control, wetting agent) and a solvent. The present invention further provides a method of forming a biuret comprising the steps of: unblocking a blocked amine in the presence of moisture; and crosslinking the unblocked amine with a polyuretdione resin. The compositions of the present invention are particularly applicable in or as coatings, adhesives, castings, composites, and sealants with good performance and extended pot-life.
Claims16
A composition comprising:
- a polyuretdione resin;
- a blocked amine;
- and
- optionally,
- an additive package and
- a solvent.
A method of forming a biuret comprising the steps of:
- unblocking a blocked amine in the presence of moisture;
- and
- crosslinking the unblocked amine with a polyuretdione resin.
Dependencies are inferred from the claim text.