Mixed phases having the composition Bi.sub.2-x Cr.sub.x O.sub.3

Details Mixed phases having the composition Bi.sub.2-x Cr.sub.x O.sub.3 Mixed phases having the composition Bi.sub.2-x Cr.sub.x O.sub.3

1984-12-18

1986-10-14

Kight, John

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106288B, 423595, C04B 1430, C01G 3714

Patent

active

046170618

ABSTRACT:
Yellow to orange-red bismuth oxide-chromium oxide mixed phase pigments having a specific surface from about 1 to 10 m.sup.2 /g and the composition Bi.sub.2-x Cr.sub.x O.sub.3 wherein x is from about 0.05 to 0.5 are produced by mixing the appropriate quantities of finely disperse bismuth-(III)-- and chromium-III-- or chromium-(VI)-compounds, calcining the mixture in air at a temperature from about 500.degree. to 800.degree. C. and subsequently grinding. The products are suitable for pigmenting lacquers, plastics and dispersion dyes.

REFERENCES:
Chem. Abst. #71837a, Crystal Studies of the Bi.sub.2 O.sub.3 --Cr.sub.2 O.sub.3 System, Masuno, (1970), (vol. 72(14)).
Chem. Abst. #177845x, "Crystal Phases of Nonohomic Zinc Oxide Ceramics", Inada, (1978), (vol. 88(24)).
Chem. Abstract #205154y (vol. 98), Synthesis and Properties of Phases in the Bismuth Trioxide Chromium Trioxide System, Zhitomirskii et al.

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