Bright noble metal preparation
View Patent ↗A bright noble metal preparation for firing on ceramic/porcelain surfaces at a minimum temperature of 900° C. The preparation has at least one organic noble metal compound including at least one of an organic gold, platinum, silver and palladium compound, at least one flux that consists of organometallic compounds including Cr in the form of at least one organic compound, such that a Cr content is 0.01 to 1.0 mole per mole of noble metal, and at least one vehicle. The bright noble metal preparation is rhodium-free and has a noble metal content of 6 to 20 wt. %, based on the preparation.
1. A bright noble metal preparation for firing onto ceramic/porcelain surfaces at a minimum temperature of 900° C. for forming a very bright noble metal film comprising:
at least one organic noble metal compound, including an organic gold compound; at least one flux of organic metal compounds; and at least one carrier, wherein the bright noble metal preparation is rhodium-free, wherein the preparation contains Cr in the form of at least one organic compound, the Cr content being 0.01 to 1.0 mole of Cr per mole of noble metal and at least one additional element selected from the group consisting of Si and Ni in the form of organic compounds, such that the total content of Si, Cr, and Ni is 0.2 to 2.0 mole per mole of noble metal, the noble metal content being in a range of 6 to 20 wt. % based on the preparation.