Titanium dioxide coated micaceous iron oxide pigments and method

Details Titanium dioxide coated micaceous iron oxide pigments and method Titanium dioxide coated micaceous iron oxide pigments and method

1990-02-26

1991-03-26

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106441, 106415, 106439, C09C 136

Patent

active

050026089

ABSTRACT:
The weatherability and lightfastness of TiO.sub.2 coated micaceous iron oxide (MIO) pigment may be improved by transforming the TiO.sub.2 present in the coating layer to rutile TiO.sub.2. Further improvement in the weatherability and lightfastness may be achieved by coating the pigment with an oxide of Cr, V, Mo, Al or a mixture thereof and/or a hydrous oxide of Cr or V, or a combination of two or more hydrous oxides of Cr, V, Al and Si.

REFERENCES:
patent: 3022186 (1962-02-01), Hund
patent: 3869398 (1975-03-01), Suzuki et al.
patent: 3956007 (1976-05-01), Modly
patent: 4552593 (1985-11-01), Ostertag
patent: 4744832 (1988-05-01), Franz et al.

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