The conductive suspension constituent and the conductive paint constituent which become the conductive stannic oxide powder and its production manner and making use of that, as

摘要

PROBLEM TO BE SOLVED: To provide electroconductive Sn powder having excellent transparency without Sb element by including respectively a specific amount of P element as a dopant and Nb element and/or Si element as the third component and having a prescribed specific surface area. ;SOLUTION: This electroconductive SnO powder is obtained by following processes. An Nb-P solution is prepared by dissolving NbCl₅ in hydrochloric acid, adding orthophosphoric acid and mixing. A precipitate containing Sn element is obtained by adding a solution prepared by dissolving SnCl₄ in an aqueous solution of hydrochloric acid and an aqueous solution of NaOH to water. A product in which Nb element and P element are deposited on the surface of a deposited particle containing Sn element by simultaneously adding the Nb-P solution and the NaOH aqueous solution to a suspension containing the precipitate, ageing and acidifying. Next, the product is filtered, washed and dried, then baked at 300-1,100°C to obtain the objective electroconductive SnO powder containing 0.1-20mol% of P element as a depant and 0.01-5mol% of Nb element as the third component, having 5-200m²/g specific surface area without Sb element and having 10^-2-10^-3Ω.cm powder volume ressistivity under the pressure of 100kg/cm².;COPYRIGHT: (C)1998,JPO