Metallic colloidal solution and inkjet-use metallic ink

Details Metallic colloidal solution and inkjet-use metallic ink Metallic colloidal solution and inkjet-use metallic ink

2005-03-01

2008-11-04

McGinty, Douglas (Department: 1796)

Compositions

Electrically conductive or emissive compositions

Free metal containing

C252S518100, C252S519300, C252S500000

Reexamination Certificate

active

07445731

ABSTRACT:
A metallic colloidal solution (a) includes a water-based dispersion medium that is easy in handling with regard to safety and environment and metallic particles having a uniform particle diameter and being excellent in properties such as conductivity and (b) has properties suitable for various printing methods and ink-applying methods. In addition, an inkjet-use metallic ink incorporating the metallic colloidal solution has properties suitable for the inkjet printing method. The metallic particles are deposited by reducing metallic ions in water and have a primary-particle diameter of at most 200 nm. The dispersion medium is made of a mixed solvent of water and a water-soluble organic solvent. The metallic particles are dispersed in the dispersion medium under the presence of a dispersant having a molecular weight of 200 to 30,000.

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Japanese Office Action in corresponding Japanese Patent Application No. 056572/2004, dated Jul. 4, 2006.
Japanese Office Action corresponding to Patent Application No. 2004-05671, filed on Aug. 8, 2006.

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