Organosulfur gold compounds, a process for their production and

Details Organosulfur gold compounds, a process for their production and Organosulfur gold compounds, a process for their production and

1995-02-17

1997-06-17

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

4272082, 427229, 427428, 427429, C07F 112, B05D 510

Patent

active

056399014

ABSTRACT:
Various organosulfur gold compounds and their use for the production of gold decorations are known.
The invention relates to new organosulfur gold compounds, to a process for their production and to their use for the production of preparations for producing a gold decoration on firing-resistant substrates.
The gold compounds according to the invention are obtainable from monogold(I) dimercaptosuccinic acid and compounds of similar structure by dissolution thereof in water in the presence of a base and precipitation by acidification and, if desired, repetition of the dissolving and precipitating steps. The gold compounds according to the invention are characterized by a gold content of 60 to 90% by weight, an atomic ratio of greater than 0.7 to 4. Preferred gold compounds are soluble in water and are suitable as a constituent of organic/aqueous and exclusively aqueous bright and burnished gold preparations for the decoration of glass, porcelain and ceramic.

REFERENCES:
patent: 5162556 (1992-11-01), Maeda et al.
patent: 5235079 (1993-08-01), Lotze et al.
patent: 5252764 (1993-10-01), Lotze et al.
patent: 5491247 (1996-02-01), Gernon

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