Noble metal preparation and its use to produce noble metal decorations by direct and indirect printing

US6303679A · kind A · utility

Assignee

• dmc.sup.2 Degussa Metals Catalysts Cerdec AG · DE

Inventors

• Andreas Schulz · Karben, DE
• Elisabeth Zimmerbeutel · Rodenbach, DE
• Susanne Keyn · Frankfurt, DE
• Stephen J. Hackett · Stafford, GB

Key dates

• Filing date: Apr 3, 2001
• Grant date: Oct 16, 2001
• Expiry date: Apr 3, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2217/72
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a noble metal preparation for producing noble metal decorations on decoratively fireable substrates by direct printing and indirect printing (transfer technique). The printing quality of the preparation containing noble metal compounds and a binder system can be improved in that the binder system comprises a resin mixture of a) 25 to 40 wt. % of polyamide resins, b) 5 to 30 wt. % of sulfurised recent resins, c) 20 to 55 wt. % of rosin-modified resins, d) 0 to 30 wt. % of alkylphenol resins and e) 0 to 30 wt. % of other resins compatible therewith or of the reaction products, formed at 50 to 150.degree. C., of the resin mixture mentioned and/or the reaction products, formed at 50 to 150.degree. C., of the resin mixture mentioned or the reaction products of same containing the noble metal compounds in the presence of a sulfur-containing gelling agent.