Patent · US Active

Compositions using polyuretdione resins

US11292864B2 · kind B2 · utility

0Cited by

7References

11Claims

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	Apr 5, 2022
Priority date	—
Expiry date	Mar 23, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2201/012
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention provides a reaction mixture comprising a hot blend of a first isocyanate-based uretdione resin and a second isocyanate-based uretdione 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 isocyanate-based uretdiones that have been hot blended together produce coatings, adhesives, castings, composites, and sealants, which exhibit better performance properties (such as microhardness) than those coatings, adhesives, castings, composites, and sealants produced from the constituent isocyanate-based uretdiones alone.

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