Compositions – Electrically conductive or emissive compositions – Metal compound containing
Patent
1993-12-28
1996-06-25
Szekely, Peter A.
Compositions
Electrically conductive or emissive compositions
Metal compound containing
106400, 106403, 423593, C04B 1430, C09C 162, H01B 108, C08K 322
Patent
active
055297200
ABSTRACT:
A low resistance conductive pigment containing indium oxide crystal grains each including a partial amount of Sn. The amount of Sn ranges from about 1 to about 15 mol % relative to the total amount of Sn and In in each of the indium oxide crystal grains. The conductive pigment further includes a specified surface acidity and a specified volume resistivity. The conductive pigment exhibits improved visibility and averages a primary particle size of up to 0.2 .mu.m,. This allows for the manufacture of superior transparent conductive films which can be useful, inter alia, as a transparent electrode in liquid crystal displays and heating elements having transparent surfaces. In one embodiment, ITO crystals undergo an oxygen extraction treatment, while in another embodiment, surface acidity, is increased by a surface modification treatment. The methods of forming conductive pigments, conductive film forming compositions and conductive resin forming compositions are also disclosed.
REFERENCES:
patent: 4594182 (1986-10-01), Hashimoto et al.
Hayashi Toshiharu
Nishihara Akira
Sekiguchi Masahiro
Mitsubishi Materials Corporation
Szekely Peter A.
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