METHOD FOR COATING METAL SURFACE, CAPABLE OF AVOIDING PINHOLE ON ZINC CONTAINING METAL SURFACE
To provide a method for coating a metal surface, capable of avoiding a pinhole on a zinc containing metal surface.SOLUTION: In the use of a silane additive in an aqueous cleaning composition in an aqueous rinse or/and an aqueous active composition, the amount of the silane additive obtained by calcu...
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Format: | Patent |
Sprache: | eng ; jpn |
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