Wednesday, February 13, 2008

US Patent 7329301 - Silver nanoparticle composite

This patent from Kodak teaches a manufacturing method for a silver colloidal composition that can be performed at relatively lower temperatures (<90 C). The resultant composition is useful as an anti-bacterial agent or an electrical conductor. Claim 1 reads:

1. A composition of matter comprising associated predominantly silver metal nanoparticles, a polymer that is soluble in a non-aqueous solvent and a non-aqueous solvent, wherein greater than 80% by number of the nanoparticles touch or connect with at least one other particle.