Antibacterial sheet, antibacterial coat, laminate, and antibacterial solution

Patent metadata

Field	Value
Publication number	US-2017164609-A1
Application number	US-201715440701-A
Country	US
Kind code	A1
Filing date	Feb 23, 2017
Priority date	Sep 22, 2014
Publication date	Jun 15, 2017
Grant date	—

Abstract

An object of the present invention is to provide an antibacterial sheet which is particularly extremely effective for preventing cloudiness or dew condensation and can prevent or inhibit the bacterial multiplication, an antibacterial coat, a laminate, and an antibacterial solution. The antibacterial sheet of the present invention has a support and at least one antibacterial layer disposed on the support, in which the antibacterial layer contains a binder and at least one kind of an antibacterial agent, and a water contact angle of only the binder is equal to or less than 20°.

First claim

What is claimed is:

1 . An antibacterial sheet comprising;
a support; and at least one antibacterial layer disposed on the support, wherein the antibacterial layer contains a binder and an antibacterial agent, and a water contact angle of only the binder is equal to or less than 20°.

2 . The antibacterial sheet according to claim 1 ,
wherein the water contact angle of only the binder is equal to or less than 10°.

3 . The antibacterial sheet according to claim 1 ,
wherein the binder contains at least one kind of siloxane compound.

4 . The antibacterial sheet according to claim 1 ,
wherein the antibacterial layer is a layer formed using a coating solution containing a siloxane oligomer represented by the following Formula (1) and an antibacterial agent,

in Formula (1), R 1 to R 4 each independently represent an organic group having 1 to 6 carbon atoms, and n represents an integer of 2 to 20.

5 . The antibacterial sheet according to claim 4 ,
wherein the antibacterial layer contains a catalyst accelerating condensation of the siloxane oligomer.

6 . The antibacterial sheet according to claim 1 ,
wherein the antibacterial layer further contains at least one kind of silica particles.

7 . The antibacterial sheet according to claim 6 ,
wherein the silica particles contain silica particles having a mean particle size of equal to or less than 100 nm.

8 . The antibacterial sheet according to claim 6 ,
wherein the silica particles contain silica particles having a mean particle size of equal to or less than 20 nm.

9 . The antibacterial sheet according to claim 1 ,
wherein the antibacterial layer further contains at least one kind of surfactant.

10 . The antibacterial sheet according to claim 9 ,
wherein the surfactant contains at least one kind of ionic surfactant.

11 . The antibacterial sheet according to claim 4 ,
wherein the coating solution contains an ionic surfactant, and a content of the ionic surfactant is equal to or less than 1.0% by mass with respect to a total mass of the coating solution.

12 . The antibacterial sheet according to claim 9 ,
wherein the surfactant contains at least one kind of nonionic surfactant.

13 . The antibacterial sheet according to claim 1 ,
wherein the antibacterial layer further contains an antistatic agent.

14 . The antibacterial sheet according to claim 1 ,
wherein the antibacterial agent contains silver or silver-supporting ceramic.

15 . The antibacterial sheet according to claim 1 ,
wherein the antibacterial agent contains silver-supporting glass.

16 . The antibacterial sheet according to claim 1 ,
wherein a water contact angle of a surface of the antibacterial layer is equal to or less than 20°.

17 . The antibacterial sheet according to claim 1 ,
wherein the water contact angle of the surface of the antibacterial layer s equal to or less than 10°.

18 . The antibacterial sheet according to claim 1 ,
wherein an amount of silver ions, measured by the following extraction test, per unit area of the antibacterial layer is equal to or greater than 15 ng/cm 2 , in the extraction test, a 1/500 normal nutrient broth medium specified in JIS Z 2801:2010 is used as an extractant; the temperature of the extractant is controlled within a range of 35±1° C.; the extractant is brought into contact with the surface of the antibacterial layer for 1 hour; the amount of silver ions extracted into the extractant is measured; the obtained value is divided by a contact area between the surface of the antibacterial layer and the extractant so as to obtain the amount of silver ions per unit area; a unit of the amount of silver ions is ng; a unit of the contact area is cm 2 ; and a unit of the amount of silver ions per unit area is ng/cm 2 .

19 . The antibacterial sheet according to claim 1 that has a haze of equal to or less than 10%.

20 . The antibacterial sheet according to claim 1 that has a haze of equal to or less than 3%.

21 . The antibacterial sheet according to claim 1 that has a haze of equal to or less than 1%.

22 . The antibacterial sheet according to claim 1 ,
wherein a root mean square roughness of the surface of the antibacterial layer is equal to or less than 0.1 μm.

23 . The antibacterial sheet according to claim 1 ,
wherein the root mean square roughness of the surface of the antibacterial layer is equal to or less than 0.05 μm.

24 . The antibacterial sheet according to claim 1 ,
wherein the root mean square roughness of the surface of the antibacterial layer is equal to or less than 0.01 μm.

25 . The antibacterial sheet according to claim 1 ,
wherein a surface electrical resistance of the surface of the antibacterial layer is equal to or less than 10 10 Ω/square.

26 . The antibacterial sheet according to claim 1 ,
wherein the surface electrical resistance of the surface of the antibacterial layer is equal to or less than 10 9 Ω/square.

27 . The antibacterial sheet according to claim 1 ,
wherein the surface electrical resistance of the surface of the antibacterial layer is equal to or less than 10 8 Ω/square.

28 . The antibacterial sheet according to claim 1 ,
wherein a thickness of the antibacterial layer is equal to or less than 10 μm.

29 . The antibacterial sheet according to claim 1 ,
wherein the thickness of the antibacterial layer is equal to or less than 3 μm.

30 . The antibacterial sheet according to claim 1 ,
wherein the thickness of the antibacterial layer is equal to or less than 1 μm.

31 . The antibacterial sheet according to claim 1 ,
wherein the support consists of any one of polyethylene terephthalate, triacetyl cellulose, and polycarbonate.

32 . An antibacterial coat comprising:
a binder; an antibacterial agent; a surfactant; and silica particles having a mean particle size of equal to or less than 100 nm, wherein the binder is formed using a siloxane oligomer represented by the following Formula (1),

in Formula (1), R 1 to R 4 each independently represent an organic group having 1 to 6 carbon atoms, and n represents an integer of 2 to 20.

33 . The antibacterial coat according to claim 32 ,
wherein a water contact angle of materials remaining en the antibacterial agent is excluded from the antibacterial coat is equal to or less than 20°.

34 . The antibacterial coat according to claim 32 ,
wherein the surfactant contains at least one kind of ionic surfactant.

35 . The antibacterial coat according to claim 32 ,
wherein the surfactant contains at least one kind of nonionic surfactant.

36 . The antibacterial coat according to claim 32 , further comprising:
an antistatic agent.

37 . The antibacterial coat according to claim 32 ,
wherein the antibacterial agent contains silver or silver-supporting ceramic.

38 . The antibacterial coat according to claim 32 ,
wherein the antibacterial agent contains silver-supporting g

Assignees

• Fujifilm Corp

Inventors

• Shibata Michihiro
• Ozawa Shin
• Kawano Tetsuo
• Tominaga Jou
• Matsunaga Naohiro
• Nagasaki Hideo
• Kiyoto Naoharu
• Hatanaka Yusuke

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• B32B23/20

  comprising esters · CPC title

• B32B7/06

  permitting easy separation · CPC title

• B32B2307/538

  Roughness · CPC title

• B32B23/04

  comprising such {cellulosic plastic} substance as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a glass layer B32B17/08)} · CPC title