Compositions: coating or plastic – Materials or ingredients
Patent
1983-06-29
1986-01-07
Kight, John
Compositions: coating or plastic
Materials or ingredients
106302, C04B 3100
Patent
active
045632200
ABSTRACT:
A bismuth oxide/chromium oxide mixed phase pigment having the composition Bi.sub.2-x Cr.sub.x O.sub.3 wherein 0.05.times.0.5 and a specification surface of about 1.0 to 10 m.sup.2 /g is produced by mixing metallic bismuth intensively with a chromium (III) and/or chromium (VI) compound, calcining the homogeneous mixture in an oxidizing atmosphere at a temperature of about 500.degree. to 800.degree. C., and crushing the product to pigment size.
REFERENCES:
patent: 2313619 (1945-03-01), Bruce
patent: 2369261 (1945-02-01), Slonim
patent: 3072495 (1963-01-01), Pitrot
patent: 3864140 (1975-02-01), Ferrigno
"Syntheses and Properties of Phases in the Bismuth Trioxide-Chromium Trioxide System"; vol. 98, 1983 Chem. Abstracts.
Chemical Abstracts, vol. 72, No. 14, Apr. 6, 1970, p. 411, No. 71837a, Colombus, Ohio, K. Masuno: "Crystal Studies of the Bi.sub.2 O.sub.3 -Cr.sub.2 O.sub.3 System" & Nippon Kagaku Zasshi 1969, 90 (11) 1122-1127.
Chemical Abstracts, vol. 88, No. 24, Jun. 12, 1978, p. 490, No. 177845x, Colombus, Ohio, Masonari Inada: "Crystal Phases of Nonohmic Zinc Oxide Ceramics" & JPN. J. Appl. Phys. 1978, 17 (1), 1-10.
Heine Heinrich
Kohler Peter
Bayer Aktiengesellschaft
Draper Garnette D.
Kight John
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