Dispersions containing living radicals
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorsYadunandan Dar, Smita Shah
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Abstract
The present invention relates to a dispersion of polymer particles, the particle containing, on average, more than 1 living radicals each, the radicals not being chemically protected. The invention is also directed to a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.
Claims14
A dispersion comprising polymer particles dispersed in a dispersion medium, wherein said polymer particles each contain greater than 1 living radicals in each polymer particle, and wherein said dispersion contains no chemical capping agents and organic solvent is not required to cause polymer precipitation to form said polymer particle and wherein the polymer particles are not formed via free radical retrograde precipitation polymerization.
Dependencies are inferred from the claim text.