Process for preparing conductive fine particles and conductive coating materials containing said particles
AssigneeCatalysts & Chemicals Industries Co., Ltd.
InventorsGoro Sato, Michio Komatsu, Tsuguo Koyanagi, Masayuki Matsuda, Hiroo Yoshidome, Akira Nakashima, Kazuaki Inoue
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Abstract
Transparent conductive coatings excellent in transparency are provided on substrates such as glass, plastics, etc. by the use of conductive coating materials obtained by maintaining aqueous solutions of hydrolyzable tin containing or indium containing compounds at pH of 8-12, and gradually hydrolyzing said compounds in the solutions to form sols containing colloidal particles, followed by drying and calcining.
Claims10
A conductive coating material consisting of solution or dispersion in a solvent of
- (a) conductive fine particles obtained by pulverizing calcined particles having a specific surface area of less than 50 m.sup.2 /g prepared by hydrolyzing a hydrolyzable tin containing or indium containing compound in an aqueous solution while controlling the pH of said solution substantially constant within the range of 8-12, so that an aqueous sol containing colloidal particles may be formed, followed by separation, drying and calcination of the colloidal particles, and
- (b) a binder resin.
A substrate having on the surface thereof a transparent conductive coating formed from a conductive coating material comprising solution or dispersion in a solvent of
- (a) conductive fine particles obtained by pulverizing calcined particles having a specific surface area of less than 50 m.sup.2 /g prepared by hydrolyzing a hydrolyzable tin containing or indium containing compound in an aqueous solution while controlling the pH of said solution substantially constant within the range of 8-12, so that an aqueous sol containing colloidal particles may be formed, followed by separation, drying and calcination of the colloidal particles, and
- (b) a binder resin.
Dependencies are inferred from the claim text.