Patent ID: 6939564

Claim:
Multimolecular micelles consisting essentially of polyelectrolyte copolymers including at least one hydrophobic block and at least one hydrophilic block wherein: 1) said at least one hydrophobic block comprises ionizable and/or charged repeating monomers in combination with nonionic hydrophobic repeating monomers; wherein the ionizable and/or charged repeating monomers include at least one compound selected from the group consisting of alkylacrylic acid derivatives, acrylic acid derivatives, aminoalkylacrylate derivatives, and (amino alkyl) alkylacrylate derivatives, and wherein the non-ionic hydrophobic repeating monomers include one or more hydrophobic vinyl compounds; and 2) said at least one hydrophilic block, comprises a nonionic hydrophilic polymer or oligomer that is polyethylene glycol or that is synthesized from hydrophilic vinyl monomers; and wherein said hydrophobic block comprising ionizable and/or charged repeating monomers in combination with the nonionic hydrophobic repeating monomers forms a micellar core and said hydrophilic block forms the exterior of the micelle.