C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 167/02 (2006.01) C09D 5/03 (2006.01) C08L 33/06 (2006.01)
Patent
CA 2491520
The present invention relates to powdered thermosetting compositions comprising as binder a co-reactable particulate mixture of a carboxyl group containing amorphous polyester, a glycidyl group containing acrylic copolymer and a curing agent having functional groups, reactable with the polyester' carboxyl groups. The invention also relates to the use of said compositions for the preparation of powdered paints and varnishes which give semi gloss coatings with an adjustable gloss, providing an outstanding flow, excellent mechanical properties, good solvent resistance and weathering.
L'invention concerne des compositions thermodurcissables pulvérulentes, comprenant comme liant un mélange particulaire coréactionnel d'un groupe carboxyle contenant un polyester amorphe, un groupe glycidyle contenant un copolymère acrylique, et un agent de durcissement présentant des groupes fonctionnels capables de réagir avec les groupes carboxyle du polyester. L'invention concerne également l'utilisation desdites compositions pour la préparation de peintures et de vernis en poudre d'une remarquable fluidité, fournissant des revêtements semi-lustrés, à brillance réglable, d'excellentes propriétés mécaniques et d'une bonne résistance aux solvants et aux intempéries.
Knoops Nele
Maetens Daniel
Moens Luc
Robic
Surface Specialties S.a.
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