Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1997-11-14
2000-06-13
Le, Hoa T.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
427215, 427218, 428325, 428328, 428331, 428404, 428406, B32B 516
Patent
active
060747544
ABSTRACT:
The invention relates to pigments consisting of substantially spherical particles with a mean particle diameter of less than 10 .mu.m, on the basis of an oxidic or silicate substrate material with noble metal distributed extremely finely on and/or in the particles. Preferred pigments are purple-colored and are based on an oxide from the series SiO.sub.2, SnO.sub.2 and ZrO.sub.2 and gold as noble metal. The pigments are suitable for the production of ceramic decorations and for the dyeing of plastics, synthetic films and fibers as well as lacquers. Exceptional application properties are obtained by virtue of the spherical shape. The pigments are obtainable by a spray-pyrolysis process in which an aerosol consisting of a solution of at least one noble metal compound and an oxide- or silicate-forming precursor is subjected to pyrolysis; the pigment is separated from the pyrolysis gas.
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Labeau et al., "Synthesis of pure and Pd-doped and SnO.sub.2 particles", Solid State Ionics 63-65 (1993) 159-163.
Patent Abstracts of Japan, vol. 017, No. 663 (C-1138), Dec. 8, 1993 & JP 05 214262 A (KAO CORP), Aug. 24, 1993.
Brandes Ralph
Giesecke Norbert
Hartmann Werner
Jacobsen Hauke
Katusic Stipan
Degussa - Aktiengesellschaft
Le Hoa T.
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