Capsules e.g. useful for selectively complexing and/or decomplexing chemical entities comprise a core of polymerized complexing agent in a shell formed by polycondensation of at least two monomers

摘要

Complexing capsules comprise: (a) a core comprising agents that are capable of complexing and/or decomplexing chemical entities and have been functionalized with one or more polymerized monomers; and (b) a shell that is permeable to the chemical entities and comprises a polymer membrane formed by polycondensation of at least two monomers. Independent claims are also included for: (1) production of capsules as above by preparing a solution of a monomer M1, a monomer Mc-grafted complexing agent and optionally a crosslinking agent in a solvent S1, dispersing the solution in an immiscible solvent S2 optionally containing a surfactant, adding a S2-soluble monomer M2 to form capsules by interfacial polycondensation of M1 and M2, and polymerizing and optionally crosslinking Mc; (2) production of complexing capsules by preparing a solution of a monomer M1, a monomer Mc-grafted complexing agent and optionally a crosslinking agent in a solvent S1, dispersing the solution in an immiscible solvent S2 containing a S2-soluble monomer M2 and optionally a surfactant, and simultaneously effecting interfacial polycondensation of M1 and M2 and radical polymerization and optionally crosslinking of Mc.