Antibacterial polymer particles, composition, and article
One aspect of the present invention includes, in antibacterial polymer particles, a crosslinked copolymer having a structural unit derived from a monofunctional monomer having an antibacterial group, and a structural unit derived from a polyfunctional monomer. A water absorption capacity of the antibacterial polymer particles is 3 g/g or more.
1 . An article comprising antibacterial polymer particles, wherein
the antibacterial polymer particles are fixed on a surface of the article,
the antibacterial polymer particles include: a crosslinked copolymer that includes a structural unit derived from a monofunctional monomer having an antibacterial group, and a structural unit derived from a polyfunctional monomer,
a blend amount of the structural unit derived from the monofunctional monomer having the antibacterial group in the crosslinked copolymer is 70% by mass or more and 99% by mass or less,
a water absorption capacity of the antibacterial polymer particles is 30.9 g/g or more, and
the article is at least one of restorations, impressions, denture bases, contact lenses, catheters, implants, wound dressings, stents, cutting boards, toilet seats, or tableware.
2 . The article according to claim 1 , wherein a median diameter of the antibacterial polymer particles is 0.2 to 110 μm.
3 . The article according to claim 1 , wherein the monofunctional monomer having the antibacterial group is a compound represented by a general formula (1):
where R 1 is a methyl group or a hydrogen atom, X is an oxygen atom or an imino group, R 2 is an alkylene group having 1 to 20 carbon atoms, and R 3 and R 4 are independently alkyl groups having 1 to 3 carbon atoms, R 5 is an alkyl group having 1 to 20 carbon atoms, and Y − is a chloride ion, an iodide ion, a bromide ion, or a methyl sulfate ion.
4 . A dental composite resin comprising:
antibacterial polymer particles;
a polymerization initiator; and
a filler, wherein
the antibacterial polymer particles include: a crosslinked copolymer that includes a structural unit derived from a monofunctional monomer having an antibacterial group, and a structural unit derived from a polyfunctional monomer,
a blend amount of the structural unit derived from the monofunctional monomer having the antibacterial group in the crosslinked copolymer is 70% by mass or more and 99% by mass or less, and
a water absorption capacity of the antibacterial polymer particles is 30.9 g/g or more.
5 . The dental composite resin according to claim 4 , wherein a median diameter of the antibacterial polymer particles is 0.2 to 110 μm.
6 . The dental composite resin according to claim 4 , wherein the monofunctional monomer having the antibacterial group is a compound represented by a general formula (1):
where R 1 is a methyl group or a hydrogen atom, X is an oxygen atom or an imino group, R 2 is an alkylene group having 1 to 20 carbon atoms, and R 3 and R 4 are independently alkyl groups having 1 to 3 carbon atoms, R 5 is an alkyl group having 1 to 20 carbon atoms, and Y − is a chloride ion, an iodide ion, a bromide ion, or a methyl sulfate ion.
7 . Antibacterial polymer particles comprising:
a crosslinked copolymer that includes a structural unit derived from a monofunctional monomer having an antibacterial group, and a structural unit derived from a polyfunctional monomer, wherein
a blend amount of the structural unit derived from the monofunctional monomer having the antibacterial group in the crosslinked copolymer is 70% by mass or more and 99% by mass or less, and
a water absorption capacity of the antibacterial polymer particles is 30.9 g/g or more.