Process for preparing colored mineral powders by irradiation

Details Process for preparing colored mineral powders by irradiation Process for preparing colored mineral powders by irradiation

1996-10-08

1999-12-28

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

06007616&

ABSTRACT:
Disclosed is a system of natural colours consisting of thousands of coloured 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 colours 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 colours. 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 colour 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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