Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1997-01-28
1998-02-24
Silverberg, Sam
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524204, C08K 536
Patent
active
057213038
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
Hofler Marco
Schulz Andreas
Cerdec Aktiengesellschaft Keramische Farben
Silverberg Sam
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