PLATELET-SHAPED, COPPER-CONTAINING, METALLIC EFFECT PIGMENTS, PROCESS FOR PREPARING THEM AND USE THEREOF

摘要

The invention relates to platelet-shaped, copper-containing, metallic effect pigments which have a copper content of 60 to 100% by weight, based on the total metal content, the metallic pigments having a thickness distribution, as determined via thickness counting by scanning electron microscopy (SEM) and represented as the cumulative undersize distribution, a) an h50 value of 10 to 50 nm, b) an h90 value of 20 to 70 nm, the platelet-shaped, copper-containing, metallic effect pigments having been produced by milling a copper-containing atomized metal powder with lubricant. The invention further relates to a process for preparing these pigments and to their use, to a printing ink comprising the pigments of the invention, and to a coated article comprising these pigments.