Silver nanoparticles made in solvent
AssigneeEastman Kodak Company
InventorsYun Chang, Eric Schmittou, Peter Cowdery-Corvan, Seshadri Jagannathan
Life of this patent
Estimating the term…
Abstract
This invention relates to a composition of matter comprising associated predominantly silver nanoparticles, and a method of making said nanoparticles. It further relates to articles comprising said nanoparticles.
Claims41
A composition of matter comprising associated predominantly silver metal nanoparticles.
A method of making associated predominantly silver metal nanoparticles comprising
- providing a source of soluble silver,
- reducing the soluble silver into silver metal using a reducing agent,
- supplying a polymer that is soluble in a non-aqueous solvent and a non-aqueous solvent;
- and
- allowing the growth of the nanoparticles in the presence of the polymer and non-aqueous solvent.
A method of making associated predominantly silver metal nanoparticles comprising
- providing a soluble silver salt,
- reducing the soluble silver salt into silver metal using tin(II) chloride, ascorbic acid palmitate or potassium tetrachloroaurate,
- supplying polyvinylbutyral or a copolymer thereof and a ketone solvent;
- and
- allowing the growth of the nanoparticles in the presence of the polyvinylbutyral or a copolymer thereof and the ketone solvent;
- wherein the method is performed at a temperature below 35 degrees C.
An article comprising an antimicrobial amount of a nanoparticle composition comprising associated predominantly silver metal nanoparticles, wherein said composition is either applied to the surface of or integrated into the article.
A device comprising a composition comprising associated predominantly silver metal nanoparticles, wherein said composition is utilized in the device in an amount and in a format suitable for conducting electrical current.
An article comprising on the surface thereof a composition comprising associated predominantly silver metal nanoparticles, wherein said composition is applied to the surface in an amount and in a format suitable for conducting electrical current.
A medium comprising a support and coated on the surface thereof an antimicrobial layer comprising associated predominantly silver metal nanoparticles.
A method of inhibiting the growth of microorganisms comprising contacting said microorganisms or their surrounding environment with a composition comprising associated predominantly silver metal nanoparticles.
A method of inhibiting the growth of microorganisms comprising contacting said microorganisms or their surrounding environment with an article comprising associated predominantly silver metal nanoparticles.
A method of conducting an electrical current comprising passing an electrical current through a device comprising a composition comprising associated predominantly silver metal nanoparticles, wherein said composition is utilized in the device in an amount and in a format suitable for conducting electrical current.
Dependencies are inferred from the claim text.