Patent ID: 8709466

Claim:
A cationic graft polymer of formula (1): I′ P′] w′ (1), wherein w′ is a positive number greater than or equal to 3, I′ is a core comprising a multivalent linear aliphatic polycarbonate comprising carbonate repeat units, the cationic graft polymer comprises w′ independent peripheral monovalent cationic polymer chains P′, wherein each of the chains P′ is linked to a respective one of the carbonate repeat units of I′, and each of the chains P′ is a homopolymer of a cationic repeat unit selected from the group consisting of and combinations thereof, wherein X ⊖ is a negative charged counterion, and the cationic graft polymer is an effective antimicrobial agent against a Gram-positive microbe and/or a Gram-negative microbe.