Patent · US Active

Polyuretdione-containing resin blend compositions

US11440988B2 · kind B2 · utility

0Cited by

7References

9Claims

0Family size

Assignees

Covestro LLC · US
Covestro Deutschland AG · DE

Inventors

Alan Ekin · Dorpsstraat, US
Florian Stempfle · Cologne, DE
Alan D. Bushmire · Schoutenkamp, US

Key dates

Filing date	Mar 23, 2018
Grant date	Sep 13, 2022
Priority date	—
Expiry date	Mar 23, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2190/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention provides a reaction mixture comprising a blend of a first isocyanate-based uretdione-containing resin and a second isocyanate-based uretdione-containing resin, a neutralized polyol and a tertiary amine catalyst, and optionally, an additive package selected from the group consisting of flow control additives, pigments (colorants), wetting agents, and solvents, wherein the first isocyanate and the second isocyanate are different. The first isocyanate-based uretdione-containing resin and the second isocyanate-based uretdione-containing resin may be cold blended or hot blended. Coatings, adhesives, castings, composites, and sealants made from hot blended formulations exhibit superior performance over those made from cold blended formulations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.