| abstract |
The invention concerns a rust conversion agent consisting of one or more hydroxylated organic acid salts or a hydroxylated organic acid derivative, at least one of a passivating compound and a sequestering compound, and a solvent, the hydroxylated organic acid or acids or said derivative or derivatives being chosen from the hydroxylated carboxylic acids and the derivatives of same, different from tannic acid, and the carboxylic functions of which are chosen from the free carboxylic functions, the ester functions, the lactone functions and the anhydride functions. |