| 摘要 |
PURPOSE: To produce an aqueous dispersion, comprising specific polymer particles and a specified water-soluble polymer, having high dispersibility of aπ-conjugated system electroconductive polymer particles, excellent in stability with time, good in film-forming properties and useful as an electroconductive coating material. CONSTITUTION: This aqueous dispersion comprises (A) polymer particles, comprising (ii) aπ-conjugated system electroconductive polymer containing (i) a low- molecular protonic acid (e.g. a mineral acid such as sulfuric acid) and having 0.01-2μm average particle diameter and (B) a water-soluble polymer (e.g. polyvinyl alcohol) having 10000-100000 number-average molecular weight expressed in terms of polystyrene. Furthermore, at least one monomer for constituting the component (ii) (e.g. a heterocyclic 5-membered ring compound) is preferably polymerized in the presence of the component (B), a transition metallic compound (e.g. ferric sulfate) and the component (i) using an oxidizing agent (e.g. ferric chloride).
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