Process for preparing conductive acicular zinc oxide

Details Process for preparing conductive acicular zinc oxide Process for preparing conductive acicular zinc oxide

1991-11-13

1992-12-15

Group, Karl

Compositions: coating or plastic

Materials or ingredients

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

252518, 106426, C04B 1430

Patent

active

051713640

ABSTRACT:
A process for preparing a conductive, acicular zinc oxide, comprising the steps of: preparing a zinc oxide slurry comprising an acicular zinc oxide, a salt of at least one metal selected from the group consisting of aluminum, gallium, indium and tin and an aqueous solution of an alkali metal hydroxide and having a pH value maintained at 10 to 13, adjusting the pH value of said zinc oxide slurry to 5 to 9 while stirring, aging the slurry, separating the zinc oxide present in the slurry by filtration, washing and drying the separated zinc oxide, and then firing the dried zinc oxide at 500.degree. to 700.degree. C. in a reducing atmosphere.

REFERENCES:
patent: 5102650 (1992-04-01), Hayashi et al.

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