| abstract |
(57) [Problem] To provide an antibacterial agent having high antibacterial activity, which can improve dispersibility in a resin composition such as a coating agent, affinity with a resin, and film characteristics by using an antibacterial metal component. SOLUTION: Polymer particles composed of a polymer having a functional group containing atoms such as an oxygen atom, a nitrogen atom and a sulfur atom (average particle diameter having a crosslinked structure of 0.1 nm to 10 nm) 0 μm) and an antimicrobial metal component (eg, a silver component) supported by a chemical bond (coordination bond, etc.) to the functional group. The supported amount of the antibacterial metal component is about 0.01 to 50% by weight of the whole in terms of metal. This antibacterial agent has a high affinity for a resin and is useful as an antibacterial resin composition (such as a resin composition for coating). |