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Eckart patents platelyet-shaped metallic effect

Published October 10, 2012
U.S. 8,163,079 B2

Eckart GmbH has been granted a patent for platelet-shaped, copper-containing, metallic effect pigments, which have a copper content of 60% to 100% by weight, based on the total metal content, wherein the metallic effect pigments have a thickness distribution as determined via thickness counting by scanning electron microscopy (SEM) and represented as cumulative undersize distribution, with an h50 of 10 to 50 nm, and with an h90 of 20 to 70 nm. The platelet-shaped, copper-containing, metallic effect pigments are produced by milling a copper-containing metal powder with lubricant.

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