Antibacterial composition, antibacterial film and wet wiper

Patent metadata

Field	Value
Publication number	US-2019037850-A1
Application number	US-201816154859-A
Country	US
Kind code	A1
Filing date	Oct 9, 2018
Priority date	Apr 13, 2016
Publication date	Feb 7, 2019
Grant date	—

Abstract

An antibacterial composition includes antibacterial agent particles containing a metal; and at least one selected from the group consisting of a silicate-based compound and a thermoplastic resin having a minimum film-forming temperature of 0° C. to 35° C., in which the antibacterial agent particles have the maximum value of frequency at a particle size of 0.1 μm or greater and less than 1 μm in a volume-based particle size distribution, and the content of particles having a particle size of 1 μm or greater is 5% to 50% by volume.

First claim

What is claimed is:

1 . An antibacterial composition, comprising:
antibacterial agent particles containing a metal; and at least one selected from the group consisting of a silicate-based compound and a thermoplastic resin having a minimum film-forming temperature of 0° C. to 35° C., wherein the antibacterial agent particles containing a metal have the maximum value of frequency at a particle size of 0.1 μm or greater and less than 1 μm in a volume-based particle size distribution, and the content of particles having a particle size of 1 μm or greater is 5% to 50% by volume.

2 . The antibacterial composition according to claim 1 , wherein the content of particles having a particle size of 1 μm or greater is 5% to 15% by volume.

3 . The antibacterial composition according to claim 1 , wherein the antibacterial agent particles containing a metal further have a local maximum value of frequency at a particle size of 1 μm or greater in the particle size distribution.

4 . The antibacterial composition according to claim 1 , wherein the antibacterial agent particles containing a metal contain at least one metal selected from the group consisting of silver, copper, and zinc.

5 . The antibacterial composition according to claim 1 , further comprising a solvent.

6 . The antibacterial composition according to claim 5 , wherein the solvent includes at least one selected from the group consisting of water and an alcohol-based solvent.

7 . The antibacterial composition according to claim 1 , wherein the antibacterial agent particles containing a metal are metal-supported carriers each including a carrier and a metal supported on the carrier.

8 . The antibacterial composition according to claim 7 , wherein the carrier is an inorganic compound.

9 . A wet wiper comprising a base cloth impregnated with the antibacterial composition according to claim 1 .

10 . An antibacterial film, comprising:
antibacterial agent particles containing a metal; and at least one selected from the group consisting of a silicate-based compound and a thermoplastic resin having a minimum film-forming temperature of 0° C. to 35° C., the antibacterial film having an average film thickness of 0.05 to 1 μm, wherein the antibacterial agent particles containing a metal have the maximum value of frequency at a particle size of 0.1 μm or greater and less than 1 μm in a volume-based particle size distribution, the content of particles having a particle size of 1 μm or greater is 5% to 50% by volume, and the maximum value of the film thickness is 0.5 to 3 μm.

11 . The antibacterial film according to claim 10 , wherein the content of particles having a particle size of 1 μm or greater is 5% to 15% by volume.

12 . The antibacterial film according to claim 10 , wherein the antibacterial agent particles containing a metal further have a local maximum value of frequency at a particle size of 1 μm or greater in the particle size distribution.

13 . The antibacterial film according to claim 10 , wherein the antibacterial agent particles containing a metal are metal-supported carriers each including a carrier and a metal supported on the carrier.

14 . The antibacterial film according to claim 13 , wherein the carrier is an inorganic compound.

15 . An antibacterial film, comprising:
antibacterial agent particles containing a metal; and at least one selected from the group consisting of a silicate-based compound and a thermoplastic resin having a minimum film-forming temperature of 0° C. to 35° C., the antibacterial film having an average film thickness of 0.05 to 1 μm, wherein the antibacterial agent particles containing a metal have the maximum value of frequency at a particle size of 0.1 μm or greater and less than 1 μm in a volume-based particle size distribution, the content of particles having a particle size of 1 μm or greater is 5% to 50% by volume, and the difference between the maximum value and the minimum value of the film thickness is 0.1 μm or greater.

16 . The antibacterial film according to claim 15 , wherein the content of particles having a particle size of 1 μm or greater is 5% to 15% by volume.

17 . The antibacterial film according to claim 15 , wherein the antibacterial agent particles containing a metal further have a local maximum value of frequency at a particle size of 1 μm or greater in the particle size distribution.

18 . The antibacterial film according to claim 15 , wherein the antibacterial agent particles containing a metal are metal-supported carriers each including a carrier and a metal supported on the carrier.

19 . The antibacterial film according to claim 18 , wherein the carrier is an inorganic compound.

Assignees

• Fujifilm Corp

Inventors

• Hasegawa Kazuhiro
• Sato Naotoshi
• Hamano Mitsumasa

Classifications

• C09D5/14

  Paints containing biocides, e.g. fungicides, insecticides or pesticides (C09D5/16 takes precedence) · CPC title

• C09D7/40

  Additives · CPC title

• A01N25/34

  Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group · CPC title

• A01N25/02

  containing liquids as carriers, diluents or solvents · CPC title

• A01N59/20 Primary

  Copper · CPC title