Film, method for producing same, transparent conductive film, and touch panel

Patent metadata

Field	Value
Publication number	US-10167370-B2
Application number	US-201615145325-A
Country	US
Kind code	B2
Filing date	May 3, 2016
Priority date	Nov 22, 2013
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A film includes a substrate including a cyclic olefin-based resin; and an easily adhesive layer adjacent to the substrate, in which a content of a fluorine-containing polymer in the easily adhesive layer is greater than 20 mass % with respect to a total mass of the easily adhesive layer. This film is used in a transparent conductive film, and this transparent conductive film is used in a touch panel. A method for producing a film includes laminating an easily adhesive layer by directly applying a coating liquid for forming an easily adhesive layer on a substrate including a cyclic olefin-based resin, in which a content of a fluorine-containing polymer in the coating liquid for forming the easily adhesive layer is greater than 20 mass % with respect to a total mass of the coating liquid for forming the easily adhesive layer.

First claim

What is claimed is:

1. A film comprising:
a substrate including a cyclic olefin-based resin; and
an easily adhesive layer that is laminated adjacent to the substrate,
wherein the content of a fluorine-containing polymer in the easily adhesive layer is greater than 20 mass % with respect to the total mass of the easily adhesive layer, and
the water content of the easily adhesive layer is 0.3% to 2.5%.

2. The film according to claim 1 ,
wherein the thickness of the easily adhesive layer is 40 nm to 400 nm.

3. The film according to claim 2 ,
wherein the fluorine-containing polymer includes a structural unit represented by formula (a1) below and a structural unit derived from vinyl ether, and
—[CFX 1 —CX 2 X 3 ]  formula (a1)

wherein, in formula (a1), each of X 1 and X 2 independently represents a hydrogen atom, a chlorine atom, or a fluorine atom, X 3 represents a chlorine atom, a fluorine atom, or —CY 1 Y 2 Y 3 , and each of Y 1 , Y 2 , and Y 3 independently represents a hydrogen atom, a chlorine atom, or a fluorine atom.

4. The film according to claim 1 ,
wherein the fluorine-containing polymer includes a structural unit represented by formula (a1) below and a structural unit derived from vinyl ether, and
—[CFX 1 —CX 2 X 3 ]  formula (a1)

wherein, in formula (a1), each of X 1 and X 2 independently represents a hydrogen atom, a chlorine atom, or a fluorine atom, X 3 represents a chlorine atom, a fluorine atom, or —CY 1 Y 2 Y 3 , and each of Y 1 , Y 2 , and Y 3 independently represents a hydrogen atom, a chlorine atom, or a fluorine atom.

5. The film according to claim 4 ,
wherein the fluorine-containing polymer includes 40 mol % to 90 mol % of a structural unit represented by formula (a1) above, 3 mol % to 50 mol % of a structural unit represented by formula (a2) below, 0.5 mol % to 30 mol % of a structural unit represented by formula (a3) below, and 0.2 mol % to 7 mol % of a structural unit represented by formula (a4) below,
wherein values of total mol % of the respective structural units represented by formulae (a1), (a2), (a3), and (a4) are 80 to 100, and at least a portion of R 4 in the structural unit represented by formula (a4) below is —NZ 1 Z 2 Z 3 ,

wherein, in formula (a2), R a represents a hydrogen atom or a methyl group, R 1 represents an alkyl group having 1 to 12 carbon atoms or a monovalent alicyclic group having 4 to 10 carbon atoms, j represents an integer of 0 to 8, and k represents 0 or 1,

wherein, in formula (a3), R b represents a hydrogen atom or a methyl group, R 2 represents an alkylene group having 1 to 10 carbon atoms or a divalent alicyclic group having 4 to 10 carbon atoms, m represents an integer of 0 to 8, and n represents 0 or 1, and

wherein, in formula (a4), R b represents a hydrogen atom or a methyl group, R 2 represents an alkylene group having 1 to 10 carbon atoms or a divalent alicyclic group having 4 to 10 carbon atoms, R 3 represents an alkylene group having 2 to 10 carbon atoms or a divalent alicyclic group having 4 to 10 carbon atoms, R 4 represents a hydrogen atom or —NZ 1 Z 2 Z 3 , each of Z 1 , Z 2 , and Z 3 independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a hydroxyalkyl group having 1 to 6 carbon atoms, p represents an integer of 0 to 8, and q represents 0 or 1.

6. The film according to claim 1 ,
wherein the easily adhesive layer is formed from an aqueous emulsion including the fluorine-containing polymer.

7. The film according to claim 6 ,
wherein the minimum film formation temperature of the aqueous emulsion is 30° C. or lower.

8. The film according to claim 1 ,
wherein a layer A having a water contact angle of 70° or less is laminated adjacent to the easily adhesive layer on a surface on an opposite side to a surface in contact with the substrate, among both surfaces of the easily adhesive layer.

9. The film according to claim 8 ,
wherein the layer A includes a gelatin.

10. The film according to claim 8 ,
wherein a photosensitive material layer for forming a transparent conductive layer is further laminated on a surface on an opposite side to a surface in contact with the easily adhesive layer, among both surfaces of the layer A.

11. A transparent conductive film comprising:
a transparent conductive layer formed by exposing and developing the photosensitive material layer for forming the transparent conductive layer of the film according to claim 10 .

12. A touch panel comprising:
the transparent conductive film according to claim 11 .

13. A transparent conductive film comprising:
the film according to claim 1 ; and
a transparent conductive layer.

14. A touch panel comprising:
the transparent conductive film according to claim 13 .

15. A method for producing a film, comprising:
laminating an easily adhesive layer by directly applying a coating liquid for forming an easily adhesive layer on a substrate including a cyclic olefin-based resin,
wherein the content of a fluorine-containing polymer in the coating liquid for forming the easily adhesive layer is greater than 20 mass % with respect to the total mass of the coating liquid for forming the easily adhesive layer, and
the water content of the easily adhesive layer is 0.3% to 2.5%.

16. The method for producing a film according to claim 15 , further comprising:
laminating a layer A by directly applying a coating liquid for forming the layer A on the easily adhesive layer,
wherein the water contact angle of the layer A is 70° or less.

17. The method for producing a film according to claim 16 ,
wherein the coating liquid for forming the layer A includes a gelatin.

18. The method for producing a film according to claim 16 , further comprising:
laminating a photosensitive material layer for forming a transparent conductive layer by directly applying an emulsion of the photosensitive material for forming the transparent conductive layer on the layer A.

19. A film comprising:
a substrate including a cyclic olefin-based resin; and
an easily adhesive layer that is laminated adjacent to the substrate,
wherein the content of a fluorine-containing polymer in the easily adhesive layer is greater than 20 mass % with respect to the total mass of the easily adhesive layer, and
wherein a layer A having a water contact angle of 70° or less is laminated adjacent to the easily adhesive layer on a surface on an opposite side to a surface in contact with the substrate, among both surfaces of the easily adhesive layer.

Assignees

• Fujifilm Corp

Inventors

• Watanabe Naomi
• Takegami Ryuta

Classifications

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• B32B2255/26

  Polymeric coating · CPC title

• C08J7/0427

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

• C08J2489/00

  Characterised by the use of proteins; Derivatives thereof · CPC title

• B32B2307/412

  Transparent · CPC title