Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1995-03-29
1998-01-13
Bell, Mark L.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106439, 106440, 106441, 106480, 106489, 106312, 106313, 501 19, 501 32, 428404, 428432, 428433, 428434, 428472, C09C 162
Patent
active
057074364
ABSTRACT:
Prior art production of purple pigments based on colloidal gold on stovable/sinterable/fireable support material involves the reduction of a gold compound in the presence of a chemical reducing agent.
Purple pigments may be produced more simply according to the invention by intimately mixing and/or grinding the support material and the gold compound in dry form or by bringing an aqueous solution or suspension of a gold compound and a support material into contact and then thermally treating the mixture at a temperature above the decomposition temperature of the gold compound and below the sintering temperature of the support material, wherein the gold compound is converted into colloidal gold.
REFERENCES:
patent: 4698324 (1987-10-01), Haruta et al.
patent: 4839327 (1989-06-01), Haruta et al.
patent: 5252522 (1993-10-01), Dorbath et al.
patent: 5589273 (1996-12-01), Dorbath et al.
Derwent Abstract AN 89-087188 of DE 3731174 and EP 307771, Aug. 1991.
Toshiba KK, Database WP1, Week 9106, Derwent Publications Ltd. London GB AN 91-041113 JP-A-02 308 866 21 Dec. 1990.
Nanao et al., Chemical Abstracts,vol. 109 No. 26 26 Dec. 1988 Columbus, Ohio Abstract No. 232852b JP-A-63 197 638.
Agency of Ind. Sci & Technology, Database WSP1 Section CH Week 9421 Derwent Publ. Ltd. GB Class JO4 AN94-061881 JP-A-06 016422 25 Jan. 1994.
Dorbath Bernd
Fritsche Klaus-Dieter
Giesecke Norbert
Ruhnau Kerstin
Bell Mark L.
Cerdec Aktiengesellschaft Keramische Farben
Hertzog Scott L.
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