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AssigneesInternational Business Machines Corporation, Agency for Science, Technology and Research
InventorsDaniel Joseph Coady, Amanda Catherine Engler, Kazuki Fukushima, James Lupton Hedrick, Jeremy Pang Kern Tan, Yi Yan Yang
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A cationic star polymer is disclosed of the general formula (1): I′P′]w′ (1), wherein w′ is a positive number greater than or equal to 3, I′ is a dendritic polyester core covalently linked to w′ independent peripheral linear cationic polymer chains P′. Each of the chains P′ comprises a cationic repeat unit comprising i) a backbone functional group selected from the group consisting of aliphatic carbonates, aliphatic esters, aliphatic carbamates, aliphatic ureas, aliphatic thiocarbamates, aliphatic dithiocarbonates, and combinations thereof, and ii) a side chain comprising a quaternary amine group. The quaternary amine group comprises a divalent methylene group directly covalently linked to i) a positive charged nitrogen and ii) an aromatic ring.
A cationic graft polymer of formula (1):
A cationic graft polymer comprising i) a multivalent linear aliphatic polycarbonate core I′ comprising 3 or more side chains and ii) 3 or more independent monovalent cationic polymer chains P′, wherein each of the side chains is linked to a respective end unit of one of the polymer chains P′, each of the polymer chains P′ is an independent homopolymer of a cationic repeat unit selected from the group consisting of
Dependencies are inferred from the claim text.