Core-first nanoparticle formation process, nanoparticle, and composition
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United States of America Patent
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Apr 25, 2017
Grant Date -
Jan 15, 2015
app pub date -
Sep 29, 2014
filing date -
Dec 31, 2008
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Abstract
A method is provided for synthesizing a core-shell nanoparticle that includes the following steps: providing a polymeric seed (in a solvent) that includes mono-vinyl monomer cross-liniked with a cross-linking agent to form the core of the nanoparticle, the core has an average diameter of from about nanometers to about 10,000 nanometers, and the core has polymer chains with living ends; adding a stabilizer to stabilize the seed and prevent the seed from precipitating out of solution; and grafting a shell species onto the living ends of the core to form the shell of the nanoparticle. A core-first synthesized nanoparticle, along with a rubber composition and tire product are also provided.
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