Patent ID: 8277693

Claim:
A fine particle dispersion, in which fine particles (P) comprised of one type or not less than two types of a metal, an alloy, and a metallic compound, having a mean particle diameter of between 1 nm and 150 nm for primary particles, are dispersed in an organic solvent, wherein a weight ratio of (D/P) between a polymer dispersing agent (D) coating a surface of the fine particle (P) and the fine particles (P) in the dispersion is less than 0.001, and the organic solvent is one of: (i) an organic solvent (S1) which contains at least an organic solvent (A) as between 10% and 90% by volume having an amide group, a low boiling point organic solvent (B) as between 5% and 45% by volume having a boiling point of between 20° C. and 100° C. at a normal pressure, and an organic solvent (C) as between 5% and 85% by volume having a boiling point of higher than 100° C. at a normal pressure and comprised of an alcohol and/or a polyhydric alcohol having one or not less than two hydroxyl groups in a molecule thereof, said organic solvent (S1) containing a total sum of the organic solvent (A) and the organic solvent (C) more than 90% by volume; or (ii) an organic solvent (S2) which contains at least the organic solvent (A) as between 10% and 95% by volume having the amide group, and the organic solvent (C) as between 5% and 80% by volume having the boiling point of higher than 100° C. at the normal pressure and comprised of the alcohol and/or the polyhydric alcohol having the one or not less than the two hydroxyl groups in the molecule thereof, said organic solvent (S2) containing a total sum of the organic solvent (A) and the organic solvent (C) more than 90% by volume.