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AssigneeEastman Kodak Company
InventorsPeter J. Ghyzel, Joseph F. Bringley, David J. Giacherio, Lawrence P. DeMejo, Terry C. Schultz, Todd Emrick
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The present invention discloses a method of making core-shell polymer particles, comprising forming a linking-group-containing polymer by derivatizing a hydroxy-group-containing polymer, comprising hydroxy groups on adjacent carbon atoms with a linking agent, that is a compound comprising both an aldehyde moiety and an amine moiety, wherein one or more acetal moieties are formed in the linking-group-containing polymer, each acetal formed by the reaction of the aldehyde moiety in the linking agent with two hydroxy groups in the linking-group-containing polymer, wherein the amine moiety then becomes a linking group pendent from the linking-group-containing polymer, wherein the linking group is capable of reacting with a precursor group in the precursor polymer. Also disclosed are compositions comprising insoluble core-shell particles made by the method.
A composition comprising insoluble core-shell polymeric particles, each comprising a core and a shell, a core comprising crosslinked core polymer and a shell comprising hydrophilic shell polymer, wherein the shell is at least 10% by weight of the core, and wherein the hydrophilic shell polymer is linked to the core polymer through a linking group between the core polymer and the hydrophilic shell polymer, comprising an amine group relatively closer to the core and an acetal group relatively closer to the shell.
Dependencies are inferred from the claim text.