Patent ID: 9212294
Filing Date: 2015-12-15
Classification: A61K,A61L,A61P,B22F,C08J,C08K,C09D

Abstract:
1. A process for making concentrated silver nanoplates that preserve shape post-concentration while increasing optical density, the process comprising: adding a stabilizing agent to a pre-concentrated solution, wherein the pre-concentrated solution comprises silver nanoplates, wherein each of the silver nanoplates has a plate shape, wherein the pre-concentrated solution has a peak optical density at a first wavelength; wherein the stabilizing agent comprises a polyvinyl based polymer and a borate; and increasing a concentration of the silver nanoplates in the pre-concentrated solution to generate a concentrated solution, wherein the concentrated solution has a peak optical density at a second wavelength, wherein the first wavelength is substantially the same as the second wavelength, wherein the peak optical density of the concentrated solution is greater than the peak optical density of the pre-concentrated solution, and wherein at least a portion of the silver nanoplates in the pre-concentrated solution retain the plate shape in the concentrated solution.