The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2016
Filed:
May. 06, 2011
Tosko Misev, Zwolle, NL;
Leendert Jan Molhoek, Zwolle, NL;
Johan Franz Gradus Jansen, Echt, NL;
Matthias Johannes Cornelis Bos, Zwolle, NL;
Gerrit Johannes DE Lange, Zwolle, NL;
Gerbert Dijkstra, Zwolle, NL;
Tosko Misev, Zwolle, NL;
Leendert Jan Molhoek, Zwolle, NL;
Johan Franz Gradus Jansen, Echt, NL;
Matthias Johannes Cornelis Bos, Zwolle, NL;
Gerrit Johannes De Lange, Zwolle, NL;
Gerbert Dijkstra, Zwolle, NL;
DSM IP ASSETS B.V., Heerlen, NL;
Abstract
Heat-curable powder coating compositions are provided which include i) at least one crystalline polyester resin present in an amount of at least 7.5 wt %; ii) at least one amorphous polyester resin present in an amount of at most 92.5 wt %; and iii) at least one peroxide present in an amount of at least 0.65 parts of peroxide in hundred parts of i)+ii) (pph), wherein the at least one crystalline polyester resin has 2-butenedioic acid ethylenic unsaturations and/or the at least one amorphous polyester resin has 2-butenedioic acid ethylenic unsaturations. The compositions may be cured to an acceptable degree at low temperature, e.g., 130° C. /20 minutes offering powder coatings that may exhibit enhanced flexibility and good adhesion. In addition, the compositions can suitably be used on heat- and/or non heat-sensitive substrates, even if the composition is highly pigmented.