| 摘要 |
<p>Disclosed is a composition for surface conditioning which enables to form a chemical conversion coating of sufficient amount even when it is applied to a metal material such as a high tension steel sheet which is hardly chemically converted. The composition for surface conditioning can be stored as a dispersion for a long time, in which dispersion a titanium phosphate compound stably exists. In addition, the composition exhibits good stability in a bath. Specifically disclosed is a composition for surface conditioning, which contains a titanium phosphate compound while having a specific pH. By blending an amine compound having a specific structure, an aromatic organic acid, a phenol compound, a phenol resin and the like into the composition for surface conditioning, the composition attains good dispersibility and enables to form a chemical conversion coating of sufficient amount.</p> |
