Antimicrobial polymer

A composition comprising an antimicrobial copolymer obtainable by reacting at least one monomer of formulas IIa to IIc,

• wherein the residue R is ethyl, propyl, butyl, pentyl, hexyl and heptyl, cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl isopropyl, sec-butyl, iso-butyl, tert-butyl, 2-pentyl (sec. pentyl), 3-pentyl, 2-methyl-butyl, 3-methyl-butyl (isopentyl), 3-methyl-but-2-yl, 2-methylbut-2-yl, 2,2-dimethylpropyl (neopentyl), 2-methylpentyl, 3-methylpentyl, 2,3-dimethylbutyl, 2,2-dimethylbutyl (neohexyl) or 3-ethylpentyl,
• with at least one further monomer,
• wherein the copolymer's glass temperature TG is 65° C. to 230° C., and
• wherein the composition is a thermoplastic.

An antimicrobial polymer blend containing an antimicrobial polymer obtainable by polymerizing a monomer having a structure according to formula I

• A-B-C′-D (I),
• wherein
• A is a radically polymerizable group of the formula —CRV1═CRV2RV3, wherein RV1, RV2 and RV3, independently of each other, are hydrogen, methyl, chloride, cyano or ester groups,
• B is an aromatic spacer,
• C′ is an aliphatic spacer of the formula —CRS1RS2—, wherein RS1 and RS2, independently of each other, are hydrogen or methyl, and
• D is an amine of the formula —NRA1RA2, wherein
• RA1 is a non-aromatic group with 2 to 7 carbon atoms, and
• RA2 is hydrogen, methyl or a non-aromatic group with 2 to 7 carbon atoms, wherein
• RA1 and RA2 are connected to each other and form a ring together with the nitrogen, wherein the ring includes 3 to 6 carbon atoms, wherein the ring formed can carry up to 4 methyl groups, wherein the polymer's glass temperature TG is 60° C. to 200° C.,
• and/or
• a copolymer obtainable by reacting at least one monomer of the formula I, wherein groups A, B, C′ and D are defined as set out above and at least one further monomer,
• wherein the copolymer's glass temperature TG is 65° C. to 230° C.,
• and
• at least one blend polymer, and
• wherein the polymer blend is a thermoplastic.