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US 12,637,577 B2Granted
Dispersion of metal fine particles
AssigneeKao Corporation
InventorTomohide Yoshida
Life of this patent
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Abstract
The present invention relates to [1] a dispersion of metal fine particles containing hydroxyacetone and propylene glycol, in which a cumulant average particle size of the metal fine particles is not less than 0.01 μm and not more than 0.1 μm, and [2] an ink containing the dispersion of metal fine particles as described in the above [1].
Claims13
A dispersion of metal fine particles, comprising:
- hydroxyacetone;
- propylene glycol;
- and
- a monocarboxylic acid which consists of both acetic acid and formic acid,
- wherein a cumulant average particle size of the metal fine particles is not less than 0.01 μm and not more than 0.1 μm,
- wherein a mass ratio of the hydroxyacetone to a metal of the metal fine particles [hydroxyacetone/metal] is not less than 0.045 and not more than 0.058,
- wherein a mass ratio of the propylene glycol to a metal of the metal fine particles [propylene glycol/metal] is not less than 2.0 and not more than 2.2, and
- wherein a mass ratio of the monocarboxylic acid to the metal of the metal fine particles [monocarboxylic acid/metal] is not less than 0.041 and not more than 0.047.
5 more elements
Dependencies are inferred from the claim text.