Polymer, antimicrobial agent, disinfectant, antimicrobial material, disinfectant material, antimicrobial method, and disinfecting method

A polymer, comprising:

• a polymer chain ending with a terminal compound and bonded to the terminal compound with a —NH— group
• present in the compound;
• wherein the compound comprises a plurality of —NH— groups,
• wherein the polymer chain comprises a repeating unit of formula (1) and a repeating unit of formula (2):
• wherein
• R1 represents a hydrogen atom or a methyl group,
• Z represents an organic ammonium salt or an organic ammonium salt and —NR5R6,
• wherein R5 and R6 each independently represent a hydrogen atom, or a substituted or unsubstituted hydrocarbon group,
• the organic ammonium salt is selected from the group consisting of —N+R2R3R4Yy−, —(C═O)O−N+HR2R3R4, and —(C═O)O−−A+ wherein R2 to R4 each independently represent a hydrogen atom, a substituted or unsubstituted hydrocarbon group, Yy− represents a y-valent counter anion, and A+ represents a quaternary ammonium cation,
• and
• X represents a single bond, a methylene group, an alkylene group, —(C═O)OR11-(*), or —(C═O)NHR12-(*) wherein R11 and R12 each represent a methylene group, an alkylene group, or an alkylene oxyalkylene group, and “*” represents a chemical bond bonded to the Z;
• wherein
• R7 represents a hydrogen atom or a methyl group, and
• A represents an aromatic hydrocarbon group, —(C═O)OR8, —(C═O)NHR9, or —OR10, wherein R8 to R10 each represent a hydrocarbon group or a group having a chain ether structure or a cyclic ether structure.