Patent · US Active

Aqueous blocked polyurethane-urea dispersion

US9404020B2 · kind B2 · utility

2Cited by

0References

17Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Hans Georg Grablowitz · Cologne, DE
Thomas Feller · Solingen, DE
Thomas Michaelis · Leverkusen, DE
Tanja Hebestreit · Wipperfürth, DE
Ingo Gipperich · Leverkusen, DE

Key dates

Filing date	May 22, 2013
Grant date	Aug 2, 2016
Priority date	—
Expiry date	May 22, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D175/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to an aqueous blocked polyurethaneurea dispersion which is obtainable by reacting at least one polyisocyanate, one blocking agent for isocyanate groups, one polyamine having at least one carboxyl and/or carboxylate group, and water. Additionally provided by the invention are a coating composition comprising the aqueous blocked polyurethaneurea dispersion, the use of the aqueous blocked polyurethaneurea dispersion or of the coating composition for producing a coating, a coating obtainable using the aqueous blocked polyurethaneurea dispersion or the coating composition, and a method for producing the aqueous blocked polyurethaneurea dispersion.

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