C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/04 (2006.01) B05D 1/36 (2006.01) B05D 7/00 (2006.01) C09D 5/38 (2006.01) C09D 7/12 (2006.01)
Patent
CA 2191110
To form multi-layer paint films which have a good finished appearance on objects which are to be painted, using an aqueous base coat composition. An aqueous base coat composition which contains aqueous polyurethane resin and rheology control agent, the electrical conductivity measured in an aqueous solution of 3 % by weight concentration of which is 700 - 900 µS/cm, is painted and then the paint film is formed, a transparent top coat is painted on the base coat paint film obtained in this way, and the base coat and the top coat are baked at the same time.
Procédé de formation de films multicouches de peinture possédant un très beau fini, consistant à déposer sur des objets à peindre une composition aqueuse d'un apprêt contenant une résine polyuréthanne aqueuse ainsi qu'un agent de régulation de la rhéologie qui, à une concentration de 3 % du poids de la composition aqueuse, possède une conductivité électrique comprise entre 700 et 900 µS/cm. On obtient ainsi la formation d'un film de peinture, sur lequel on dépose ensuite une couche de finition, et on cuit en même temps la couche d'apprêt et la couche de finition.
Gast Achim
Shiomi Kazuki
Taniguchi Hitoshi
Basf Lacke + Farben Aktiengesellschaft
Fetherstonhaugh & Co.
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