Compositions: coating or plastic – Materials or ingredients – Miscellaneous
Patent
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.
Heine Heinrich
Kohler Peter
Ringe Peter
Bayer Aktiengesellschaft
Draper Garnette D.
Kight John
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