Xerox Corporation

Alana Desouza

Valerie M Farrugia

Sandra J Gardner

Kimberly D Nosella

Wendy Chi

A nanocomposite includes a core comprising a first polymer, a shell disposed about the core, the shell comprising a sulfonated polyester, the first polymer and sulfonated polyester are different, and a plurality of silver nanoparticles disposed throughout the shell layer.

Core-shell metal nanoparticle composite

Toner particles contain a core-shell resin particle containing at least one (sulfo) polyester containing a metal on nanoparticle, and a shell containing a metal ion nanoparticle.

Antimicrobial sulfonated polyester resin

Core-shell toner particles with antimicrobial properties are described, the toner particles contain a metal ion nanoparticle in the shell.

Antimicrobial toner

A method includes heating a sulfonated polyester resin in an organic-free solvent, adding a solution of silver (I) ion to the heated resin in water to form a mixture, reducing silver (I) to silver(0) by heating the mixture from about 65&#xb0; C. to about 90&#xb0; C., thereby forming an emulsion of composite particles comprising a sulfonated polyester matrix and a plurality of silver nanoparticles disposed within the sulfonated polyester matrix, and allowing the silver nanoparticles to agglomerate into a silver nanodendrite structure.

Methods of preparing metal nanodendrimer structures

An aqueous ink composition including water; an optional co-solvent; an optional colorant; and a composite comprising a sulfonated polyester matrix having a plurality of silver nanoparticles dispersed within the matrix. A process including incorporating the aqueous ink into an ink jet printing apparatus; ejecting droplets of ink in an imagewise pattern onto an intermediate transfer member or directly onto a final image receiving substrate; optionally, heating the image to partially or completely remove solvents; and optionally, when an intermediate transfer member is used, transferring the ink in the imagewise pattern from the intermediate transfer member to a final recording substrate.

Anti-bacterial aqueous ink compositions comprising self-dispersed sulfonated polyester-silver nanoparticle composites

A method includes heating a sulfonated polyester resin in an organic-free solvent, adding a solution of silver (I) ion to the heated resin in water to form a mixture, reducing silver (I) to silver (0) by heating the mixture from about 65&#xb0; C. to about 90&#xb0; C., thereby forming an emulsion of composite particles comprising a sulfonated polyester matrix and a plurality of silver nanoparticles disposed within the sulfonated polyester matrix, and allowing the silver nanoparticles to agglomerate into a silver nanodendrite structure.

A method includes heating a sulfonated polyester resin in an organic-free solvent adding an aqueous solution of silver (I) ion to the heated resin to form a mixture and heating the mixture to effect the reduction of silver (I) ion to silver (0) in the absence of an external reducing agent. A composite includes a sulfonated polyester matrix and a plurality of silver nanoparticles dispersed within the matrix; the composite lacks trace residual byproducts from external reducing agents.

Metal nanoparticle-sulfonated polyester composites and green methods of making the same

A composite structure includes a core particle including a sulfonated polyester matrix and a plurality of silver nanoparticles dispersed throughout the matrix and a shell polymer disposed about the core particle. A method includes heating a sulfonated polyester resin in an organic-free solvent adding a solution of silver (I) ion to the heated resin in water to form a mixture, forming of an emulsion of core particles comprising a sulfonated polyester matrix and a plurality of silver nanoparticles disposed within the sulfonated polyester matrix, and adding a styrene monomer and initiator to the emulsion of composite particles to form a shell polymer disposed about the core particles, thereby forming a composite structure. The composites herein are readily incorporated into various articles.

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London, Canada

Alana Desouza