Radiopaque crosslinked acrylamide copolymers and uses thereof

A radiopaque crosslinked acrylamide copolymer comprising (a) a residue of an iodinated monofunctional unsaturated monomer that comprises (i) a single acrylamido group,

• or a single methacrylate group,
• and (ii) one or more iodinated aromatic groups, (b) a residue of a monofunctional acrylamide monomer that does not contain an iodinated aromatic group, and (c) a residue of a multifunctional acrylamide monomer that does not contain an iodinated aromatic group, wherein the one or more iodinated aromatic groups in the radiopaque crosslinked acrylamide copolymer are spaced from a polymer chain into which the residue of the iodinated monofunctional unsaturated monomer is incorporated through a linkage that comprises an alkyl chain that ranges from two to eight carbon atoms in length.

A radiopaque particulate composition comprising radiopaque particles that comprise a radiopaque crosslinked acrylamide copolymer comprising (a) a residue of an iodinated monofunctional unsaturated monomer that comprises (i) a single acrylamido group,

• or a single methacrylate group,
• and (ii) one or more iodinated aromatic groups linked to the acrylamido group or the methacrylate group through a linkage comprising a C2-C8 alkyl group, (b) a residue of a monofunctional acrylamide monomer that does not contain an iodinated aromatic group, and (c) a residue of a multifunctional acrylamide monomer that does not contain an iodinated aromatic group.