| abstract |
A composition for coating metal surfaces based on crosslinking polyester resins as an organic constituent, which, based on its total mass, contains from 4 to 20% by weight of aluminum flakes and not more than 0.1% by weight of compounds containing isocyanate groups. The composition preferably comprises, as an organic binder, at least one hydroxylated polyester resin, preferably having a mean molar mass in the range from 2000 to 15 000, and a crosslinking component for the hydroxylated polyester resin and an acidic crosslinking catalyst. A process for applying the composition to metal ribbons in a belt process is likewise claimed. The layer application is adjusted within the range from 3 to 30 µm according to the end use, for which double coating may be advantageous. For example, the composition may serve as a "galvanization replacement". |