Process to manufacture colored pigments based on zircon

Details Process to manufacture colored pigments based on zircon Process to manufacture colored pigments based on zircon

1992-04-24

1993-04-06

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

423326, C01B 3320, C08K 300

Patent

active

051999820

ABSTRACT:
A process for making colored pigments based on zircon is described whereby a mixture of zirconium halide, silicon halide and a metal halide chromophore are oxidized at a temperature in the range of from about 600.degree. to about 1400.degree. C. This combustion process may be conducted in much less time than prior art procedures which calcine zirconium oxide, silicon oxide and a chromophore. Additionally, the resultant particles are sufficiently small to enable the pigment to be used immediately without need for a subsequent grinding or pulverization step, as typically required by the prior art.

REFERENCES:
patent: 3510332 (1970-05-01), Weber
patent: 3589925 (1971-06-01), Bell
patent: 3640745 (1972-02-01), Darr et al.
patent: 3756840 (1973-09-01), Gascon
patent: 3899347 (1975-08-01), de Ahna et al.
patent: 5032420 (1991-07-01), Shobert et al.
WPI/Derwent Abstract 78-23485A/13 of DE2642143.
WPI/Derwent Abstract 78-34775A/19 of SU 560843.
WPI/Derwent Abstract 79-003743/31 of RO 66383.
WPI/Derwent Abstract 79-72995B/40 of JP 79027767.

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