Electroconductive powder and process for production thereof
AssigneeMitsubishi Kinzoku Kabushiki Kaisha
InventorMotohiko Yoshizumi
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Abstract
By pouring a solution containing hydrolyzable tin and antimony salts into an aqueous dispersion of titanium oxide particles and mixing, the salts are caused to hydrolyze, whereby a uniform and strongly adherent coating layer of antimony-containing tin oxide is formed on the surface of each particle of the titanium oxide. The coated powder thus obtained is non-hygroscopic and non-toxic and exhibits stable electroconductivity. Furthermore, since it can possess excellent whiteness, it is suitable for forming the electroconductive layers of electro-thermosensitive papers and electrostatic recording papers, for use as the antistatic agent of resins, and for other uses.
Claims6
Electroconductive powder consisting essentially of titanium oxide particles and a coating layer of a mixture of antimony oxide and tin oxide provided on the surfaces of the titanium oxide particles, wherein said titanium oxide particles have a rutile crystalline structure, a purity of at least 98 percent, and a specific surface area of 1 to 20 meter.sup.2 /gram, and said coating layer has a thickness of 0.001 to 0.07 .mu.m and contains 0.1 to 30 percent by weight of antimony.
Dependencies are inferred from the claim text.