| 摘要 |
The present invention has its object to provide a nonchromate rust preventive agent for aluminum which, despite its being of the nonchromate type, is capable of affording sufficient corrosion resistance and, even when applied to the material for heat-exchanger fins, for instance, does not allow development of white rust. This invention provides a nonchromate rust preventive agent for aluminum which comprises a zirconium compound, a fluoride ion, a water-soluble resin and an aluminum salt and an aluminum product as obtainable by a rust preventive treatment using said nonchromate rust preventive agent.
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