Title:
FORMULATIONS BASED ON WATER SOLUBLE GOLD COMPOUNDS SUITABLE FOR COLOURING CERAMIC MANUFACTURED ARTICLES
Document Type and Number:
WIPO Patent Application WO2000010941
Kind Code:
B1
Abstract:
Composition whereby ceramic manufactured articles are coloured in shades from pink to purple to violet, said composition consisting of a monovalent gold thiolate water solution or mixture of water with a water soluble organic solvent according to the following formulas: Au-S-R-X and Au-S-R-H, where R stands for a linear or branched bivalent radical of aliphatic or aromatic or cycloaliphatic or heterocyclic type optionally with substituents, such as for example aminic, amidic, hydroxylic, carboxylic, hydrocarbylic or carbonylic groups or CONH-, in the chain; X stands for a monovalent group selected out of -COOH, SO2OH, -OH, -CONH2, -NH2; O-P(O)(OH)2, in which H atoms may be replaced by alkyl groups and wherein acid groups may be salified with amines or alkaline or alkaline earth metals and basic groups may optionally be salified with organic acids.
Inventors:
VIGNALI GRAZIANO (IT)
GUIZZARDI FABRIZIO (IT)
GUIZZARDI FABRIZIO (IT)
Application Number:
PCT/EP1999/006086
Publication Date:
May 04, 2000
Filing Date:
August 19, 1999
Export Citation:
Assignee:
VIGNALI GRAZIANO (IT)
GUIZZARDI FABRIZIO (IT)
GUIZZARDI FABRIZIO (IT)
International Classes:
B32B3/06; C04B41/81; C04B; (IPC1-7): C04B41/81
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