C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 133/06 (2006.01) B05D 1/36 (2006.01) B05D 7/00 (2006.01) C08G 18/62 (2006.01) C09D 7/12 (2006.01)
Patent
CA 2228940
The present invention relates to a process for producing a multicoat paint system, in which (1) an optionally pigmented basecoat is applied to a substrate surface, (2) a polymer film is formed from the basecoat film applied in stage (1), (3) one or more further coating films are applied optionally thereto, (4) then a nonaqueous topcoat is applied which comprises A) a hydroxy-functional polyacrylate resin, B) as crosslinking agent tris(alkoxycarbonylamino)- triazine and C) optionally further crosslinking agents, such as blocked isocyanates, which are different from the tris(alkoxycarbonylamino)triazine, and/or amino resins, and subsequently (5) the coating films are baked together, where in that [sic] the polyacrylate resin comprises secondary OH groups.
La présente invention concerne un procédé pour réaliser un laquage multicouche dans lequel (1) une laque de base éventuellement pigmentée est appliquée sur une surface de substrat; (2) un film polymère est formé à partir de la couche de laque de base appliquée lors de l'étape (1); (3) éventuellement une ou plusieurs autres couches de laque est/sont appliquée(s) par-dessus; (4) une laque de finition non aqueuse est ensuite appliquée, laquelle contient (A) une résine de polyacrylate hydroxy-fonctionnelle, (B) de la tris(alcoxycarbonylamino)triazine comme réticulant et (C) éventuellement d'autres réticulants, comme des isocyanates séquencés, qui sont différents de la tris(alcoxycarbonylamino)triazine et/ou des résines aminoplastes; et ensuite (5) les couches de laque sont cuites ensemble, la résine polyacrylate contenant des groupes OH secondaires.
Baumgart Hubert
Rockrath Ulrike
Basf Coatings Ag
Fetherstonhaugh & Co.
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