Process for preparation of inorganic colorants from mixed...

Details Process for preparation of inorganic colorants from mixed... Process for preparation of inorganic colorants from mixed...

2007-10-09

2007-10-09

Orengo, J. A. (Department: 1755)

Compositions: coating or plastic

Materials or ingredients

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

C423S021100, C502S065000, C252S509000, C075S610000

Reexamination Certificate

active

11021566

ABSTRACT:
The present invention provides a novel process for preparation of inorganic colourants from mixed rare earth compounds, which are directly obtained from the ore industry, without undergoing any separation, thereby enabling a cost reduction to the extend of 10-100 times. Colors ranging from brown, blue and green can be obtained by suitable doping with other metal ions.

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