Zinc oxide powder having high dispersibility

Details Zinc oxide powder having high dispersibility Zinc oxide powder having high dispersibility

1994-08-30

1997-09-30

Le, H. Thi

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

423622, 428702, 428913, B32B 904, C01G 902

Patent

active

056724276

ABSTRACT:
A zinc oxide powder having high dispersibility, which contains one or more metal elements selected from the group consisting of aluminum, silicon, titanium, vanadium, chromium, manganese, iron, cobalt, gallium, germanium, zirconium, indium, tin and hafnium in an amount of from 0.1 to 25 atm. % relative to the total amount of metal elements including zinc. The powder has an average primary particle size of up to 1 .mu.m and a relative transmissivity of at least 0.80. The improved properties are obtained by improving the surface of the powder by immersing the powder in one or more organic liquids selected from the group consisting of alcohols, ketones, amines and esters, and then drying the particles. When containing one or more of aluminum, gallium, germanium, indium and tin, the zinc oxide powder of the invention displays high electric conductivity and is therefore applicable as a conductive pigment.

REFERENCES:
patent: 4072522 (1978-02-01), Miyatuka
patent: 5093099 (1992-03-01), Haishi et al.

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