摘要 |
<p>Chromate-free treatments and compositions for applying a conversion or passivation coating for metals, more particularly zinc coated metal surfaces. The methods of the invention comprise contacting the requisite metal surface with a phosphonomethylated polyamine. Other aspects of the invention involve methods and compositions in which the following optional components can be included: fluoacid, silane, inorganic phosphorus, acid, latex film forming component and pH adjustment agent.</p> |
申请人 |
GENERAL ELECTRIC COMPANY;CAREY, WILLIAM, S.;RAAB, MICHAEL, T.;SZWAJKOWSKI, EDMUND, P.;MELZER, JEFFREY, I. |
发明人 |
CAREY, WILLIAM, S.;RAAB, MICHAEL, T.;SZWAJKOWSKI, EDMUND, P.;MELZER, JEFFREY, I. |