Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1992-01-06
1992-09-22
Dixon, Jr., William R.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106418, 106419, 106439, C09C 100, C04B 2010
Patent
active
051493691
ABSTRACT:
Bismuth oxychloride nacreous pigment coated with a rare earth metal compound is described. The coated pigment is prepared by adding a rare earth metal salt solution to a suspension of bismuth oxychloride pigment crystals to form a further suspension containing the pigment crystals and cerium hydroxide. The cerium hydroxide is then precipitated out of the further suspension to coat the pigment crystals. The coated pigment is endowed with improved weather fastness.
REFERENCES:
patent: 3822141 (1974-07-01), Kaufman
patent: 3980491 (1976-09-01), Eberts
patent: 4126727 (1978-11-01), Kaminski
patent: 5022923 (1991-06-01), Rau et al.
Eberts Robert E.
Juby, II Robert M.
Venturini, II Michael T.
Dixon Jr. William R.
Hertzog Scott L.
Mearl Corporation
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