| 摘要 |
<p>1. Process for the anodic oxidation of a material in the form of a sheet, a foil or a web comprising aluminum or an alloy thereof, in an aqueous electrolyte containing at least one acid if appropriate after a preceding mechanical, chemical and/or electrochemical roughening process, wherein the acid used comprises phytic acid, nitrilotriacetic acid, the mono(dodecyloxy-polyoxyethylene) ester of phosphoric acid, tridecyl-benzenesulfonic acid, dinitro-stilbene-disulfonic acid, dodecyl-naphthalene-disulfonic acid, dinonyl-naphthalene-disulfonic acid, di-n-butyl-naphthalene-disulfonic acid, ethylenediamine-tetraacetic acid, hydroxyethyl-ethylenediamine-triacetic acid or a mixture of at least two of these acids.</p> |
