| abstract |
(57) [Summary] [Purpose] To provide an antibacterial fiber structure having excellent durability and high antibacterial performance. [Structure] A pyridonecarboxylic acid derivative having a specific chemical structure or an addition salt thereof, or a hydrate thereof or a hydrate of the addition salt is imparted to a fiber structure. Examples of the pyridonecarboxylic acid derivative include 5-ethyl-5,8-dihydro-8-oxofuro [3,2-b] -1,8-naphthyridine-7-carboxylic acid and 5-ethyl-2,3,5. 8- Tetrahydro-8-oxofuro [3,2-b] -1,8 -Naphthyridine-7-carboxylic acid, and the like. |