Bismuth oxychloride nacreous pigment having improved weather fas

Details Bismuth oxychloride nacreous pigment having improved weather fas Bismuth oxychloride nacreous pigment having improved weather fas

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.

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