Patent · US Active

Polyurethane powder coating compositions that do not split off blocking agents and have a low stoving temperature

US7767778B2 · kind B2 · utility

9Cited by

11References

12Claims

0Family size

Assignee

Bayer MaterialScience AG · DE

Inventors

James Rawlins · Petal, US
Michael Grahl · Leverkusen, DE
Dorota Greszta-Franz · Erkrath, DE
Hans-Josef Laas · Odenthal, DE
Reinhard Halpaap · Odenthal, DE

Key dates

Filing date	Mar 30, 2005
Grant date	Aug 3, 2010
Priority date	—
Expiry date	Jul 13, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2150/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to polyurethane powder coating compositions that do not split off blocking agents and have a low stoving temperature. The powder coating compositions contain a hydroxyl functional binder component having a content of carboxyl groups of from 0.5 to 2.0 wt. %, a polyaddition compound, at least one zinc compound as a hardening catalyst, and a compound reactive to carboxyl groups.

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