Bismuth vanadate pigments

Details Bismuth vanadate pigments Bismuth vanadate pigments

1997-10-27

1999-09-28

Koslow, Melissa

Compositions: coating or plastic

Materials or ingredients

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

423593, 428403, 428404, C04B 1400, C01G 2900

Patent

active

059581263

ABSTRACT:
Bismuth vanadate pigments of the formula (Bi.sub.4 V.sub.2 O.sub.11).sub.1-x.(BiVO.sub.4).sub.x, where 0.ltoreq.x<0.9, further comprising from 0 to 0.5% by weight of phosphorus in the form of bismuth phosphate, are characterized by a CIELAB hue angle of from 64 to 91.degree., a chroma of from 72 to 95 and a lightness.gtoreq.62 (measuring angle 45.degree., standard illuminant D65).

REFERENCES:
patent: 4529448 (1985-07-01), Koehler et al.
patent: 5336312 (1994-08-01), Byrne et al.
patent: 5399197 (1995-03-01), Vermoortele et al.
Ya.N. Blinovskov, et al., Russian Journal of Inorganic Chemistry, vol. 31, No. 1, pp. 145 and 146, 1987, "The BI.sub.2 O.sub.3 -V.sub.2 O.sub.5 System".
Marcel Touboul, et al., Acta Cryst., vol. C48, pp. 1176-1179, 1992, "Structure of Dibismuth Vanadate BI.sub.2 VO.sub.5.5 ".

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