Process for preparing colored mineral powders by chemical treatm

Details Process for preparing colored mineral powders by chemical treatm Process for preparing colored mineral powders by chemical treatm

1996-10-08

1999-08-03

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106400, 106401, 106419, 106433, 106434, 106439, 106440, 106441, 106450, 106453, 106456, 106458, 106459, 106464, 106466, 106470, 106486, 523200, C09C 132

Patent

active

059319984

ABSTRACT:
Disclosed is a system of natural colors consisting of thousands of colored powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural colors cover the totality of the visible spectrum and offer a great variety of tones, tints and reflections from white to black, including all the rainbow colors. The powders of this system are obtained by mechanical, chemical, thermal and/or physical processes and are used alone or in combination. They are particularly useful to color materials and, more especially those used in the construction and architectural fields.

REFERENCES:
patent: 3936188 (1976-02-01), Sawyer
patent: 4749869 (1988-06-01), Fournier
patent: 5084909 (1992-01-01), Pollak
patent: 5637878 (1997-06-01), Herer et al.
"Classification and Chemical Description of the Complex Inorganic Color Pigments" 3rd ed., Dry Color Manufacturer's Association, pp. 37-40, Dec. 1991.
"Pigments (Inorganic)", Kirk-Othmer Encyclopedia of Chemical Technology, 3rd ed., vol. 17, J. Wiley&Sons, NY, pp. 788, 789, 794-836, Dec. 1982.

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