Patent ID: 9718970
Date: 2017-08-01
CPC Classifications: A01N,B01J,C08J,C08K,C09D,G01N

Claim:
1. A nanocomposite comprising: a core comprising a first polymer; a shell disposed about the core, the shell comprising a sulfonated polyester; wherein the first polymer and sulfonated polyester are different; and a plurality of silver nanoparticles disposed throughout the shell layer, wherein the plurality of silver nanoparticles are present in an amount from about 0.005 weight percent to about 10 weight percent of the total shell weight; wherein the nanocomposite is prepared according to the method comprising: heating a sulfonated polyester resin in water at a temperature from about 65° C. to 90° C.; adding aqueous solution of silver (I) ion source dropwise to the heated sulfonated polyester to form an emulsion; optionally adding an aqueous solution of a reducing agent dropwise to the emulsion; adding the emulsion dropwise to polystyrene-co-n-butyl acrylate latex nanoparticles in water, continuing heating to form the nanocomposite; wherein the nanocomposite has an effective diameter in a range from about 25 nm to about 500 nm.