Bismuth phosphovanadate pigments

Details Bismuth phosphovanadate pigments Bismuth phosphovanadate pigments

1992-12-30

1993-12-28

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

C04B 1430

Patent

active

052735770

ABSTRACT:
An essentially monoclinic bismuth vanadate of the formula Bi[V.sub.1-x P.sub.x)O.sub.4 ] where x is from 0 to 0.1 has a chroma of .gtoreq.85, a lightness of .gtoreq.80, a hue angle of from 89 to 95 and a photochromism with a .DELTA.E value of .ltoreq.2 under the CIELAB system.

REFERENCES:
patent: 4115141 (1978-09-01), Piltiygsrad
patent: 4230500 (1980-10-01), Balducci et al.
patent: 4455174 (1984-06-01), Wienand et al.

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