| abstract |
The present invention relates to the use of cationic Cr(III) salts and/or complexes based on the use of cationic Cr(III) salts and/or complexes to etch polymers prior to their metallization or coating using techniques known and described in the prior art. of new formulations. The formulations of the invention relate to Cr(III) salts and/or complexes, wherein Cr(III) is coordinated to at least one or several mono-, di-, tri-, tetra-, penta-, hexadentate or bridging ligands, which ligands The coordination to the chromium is via an oxygen, sulfur or nitrogen atom or several of these atoms to the ligand. Once the polymer sheet has been etched with the etching formulations described above, the metal coating is applied by chemical and electroplating baths or by paint or other organic coatings in the case of metallization. |