VERFAHREN ZUR AUFBEREITUNG VON AETHYLENDINITRILOTETRA-2-PROPANOL (EDTP) ZUR VERWENDUNG IN STROMLOSEN VERKUPFERUNGSBAEDERN

摘要

The improvement in electroless copper plating baths for the deposition of copper onto a substrate wherein ethylenedinitrilotetra-2-propanol (EDTP) is used as complexer. The low boiling contaminants of the commercially available EDTP are removed by a process which avoids the formation of oxidation by-products. The thus treated EDTP renders good and consistent results with respect to deposition rate and copper quality of the deposit.