Patent ID: 8673331
Filing Date: 2014-03-18
Classification: A01N,B82Y

Abstract:
1. A method for preparing a composition showing sterilizing activity against bacteria, fungi and viruses, comprising i) reacting 15˜25 wt % of a silver precursor with 30˜50 wt % of a first alcohol in the presence of 0.1˜10 wt % of at least one dispersion stabilizer in a balance of water in an amount of 100 wt % to produce a silver colloid solution; ii) adding 15˜20 wt % of a titanium precursor, 10˜30 wt % of a second alcohol and 0.1˜10 wt % of an acid catalyst to a dilution of 10˜14 wt % of the silver colloid solution in a balance of water in an amount to 100 wt % of water to generate titanium dioxide nanoparticles in the silver colloid solution; and iii) adding 0.90˜26.6 wt parts of a binder to 100 wt parts of the silver colloid solution containing the titanium dioxide nanoparticles to form a combination particle, wherein the combination particle consists of a silver colloid bound to a titanium dioxide nanoparticle by a binder selected from the group consisting of acryls, urethanes, and epoxides.