Patent · US Active

Low temperature curing polyuretdione compositions

US9080074B2 · kind B2 · utility

10Cited by

29References

14Claims

0Family size

Assignees

Bayer MaterialScience AG · DE
PPG, Inc. · US

Inventors

Myron W. Shaffer · Irving, US
Abdullah Ekin · Dorpsstraat, US
Carol Kinney · Eighty Four, US
Dorota Greszta-Franz · Erkrath, DE
Jonathan T. Martz · Lijsterbesstraat, US
Jun Deng · Murrysville, US
Deborah E. Hayes · Verona, US
Stephen J. Thomas · Aspinwall, US

Key dates

Filing date	Mar 19, 2010
Grant date	Jul 14, 2015
Priority date	—
Expiry date	Nov 13, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/798
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Composition and process for low temperature curing of polyuretdione-polyol compositions in which the polyuretdione is prepared from a polyisocyanate with isocyanate groups and a polyol containing primary hydroxyl groups. The catalyst for the composition and process is an amine catalyst containing the group —N═C—N—, being aprotic, having a pKa greater than 20 and upon addition to the liquid coating composition causing a phase-change of the coating composition from liquid to solid at 25° C. and 1 atm. within one week.

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