| 摘要 |
<p>The invention refers to new compositions for protecting steel surfaces from the oxidizing action of atmosphere. The essential components are: glucosides of pyrogallic and/or allagic acid of molecular weight between 270 and 1200; phosphoric acid, phosphates of bivalent transition metals such as Zn and Mn and nitrates of bivalent metals such as Zn and Mn.</p> |
