Hardcoat film and article and image display device having hardcoat film

Patent metadata

Field	Value
Publication number	US-2022056228-A1
Application number	US-202117521025-A
Country	US
Kind code	A1
Filing date	Nov 8, 2021
Priority date	May 17, 2019
Publication date	Feb 24, 2022
Grant date	—

Abstract

A hardcoat film includes: a substrate; and a hardcoat layer, in which the hardcoat film satisfies the following Formulas (i) and (ii), (i) E′(0.4)HC×dHC≥8,000 MPa·μm, (ii) E′(4)HC×dHC≤4,000 MPa·μm, E′(0.4)HC is an elastic modulus of the hardcoat layer obtained in a case where an elongation rate is 0.4%, E′(4)HC is an elastic modulus of the hardcoat layer obtained in a case where an elongation rate is 4%, and dHC is a film thickness of the hardcoat layer.

First claim

What is claimed is:

1 . A hardcoat film comprising:
a substrate; and a hardcoat layer, wherein the hardcoat film satisfies the following Formulas (i) and (ii),
E′ (0.4)HC ×d HC ≥8,000 MPa·μm  (i)

E′ (4)HC ×d HC ≤4,000 MPa·μm  (ii)

E′ (0.4)HC is an elastic modulus of the hardcoat layer obtained in a case where an elongation rate is 0.4%, E′ (4)HC is an elastic modulus of the hardcoat layer obtained in a case where an elongation rate is 4%, and d HC is a film thickness of the hardcoat layer.

2 . A hardcoat film comprising:
a substrate; and a hardcoat layer with an anti-scratch layer, wherein the hardcoat layer with an anti-scratch layer comprises a hardcoat layer and an anti-scratch layer, the hardcoat layer is closer to the substrate than the anti-scratch layer, the hardcoat film satisfies the following Formulas (iii) and (iv),
E′ (0.4)RHC ×d RHC ≥8,000 MPa·μm  (iii)

E′ (4)RHC ×d RHC ≤4,000 MPa·μm  (iv)

E′ (0.4)RHC is an elastic modulus of the hardcoat layer with an anti-scratch layer obtained in a case where an elongation rate is 0.4%, E′ (4)RHC is an elastic modulus of the hardcoat layer with an anti-scratch layer obtained in a case where an elongation rate is 4%, and d RHC is a film thickness of the hardcoat layer with an anti-scratch layer.

3 . The hardcoat film according to claim 1 ,
wherein the substrate satisfies the following Formula (vi),
100,000 MPa·μm≤ E′ (0.4)S ×d S ≤520.000 MPa·μm  (vi)

E′ (0.4)S is an elastic modulus of the substrate obtained in a case where an elongation rate is 0.4%, and d S is a film thickness of the substrate.

4 . The hardcoat film according to claim 2 ,
wherein the substrate satisfies the following Formula (vi),
100,000 MPa·μm≤ E′ (0.4)S ×d S ≤520,000 MPa·μm  (vi)

E′ (0.4)S is an elastic modulus of the substrate obtained in a case where an elongation rate is 0.4%, and d S is a film thickness of the substrate.

5 . The hardcoat film according to claim 1 ,
wherein the hardcoat layer contains a cured product of a composition for forming a hardcoat layer containing a polyorganosilsesquioxane.

6 . The hardcoat film according to claim 2 ,
wherein the hardcoat layer contains a cured product of a composition for forming a hardcoat layer containing a polyorganosilsesquioxane.

7 . The hardcoat film according to claim 3 ,
wherein the hardcoat layer contains a cured product of a composition for forming a hardcoat layer containing a polyorganosilsesquioxane.

8 . The hardcoat film according to claim 4 ,
wherein the hardcoat layer contains a cured product of a composition for forming a hardcoat layer containing a polyorganosilsesquioxane.

9 . The hardcoat film according to claim 5 ,
wherein the polyorganosilsesquioxane contains a constitutional unit (S1) that has a group containing a hydrogen atom capable of forming a hydrogen bond and a constitutional unit (S2) that is different from the constitutional unit (S1) and has a crosslinkable group.

10 . The hardcoat film according to claim 6 ,
wherein the polyorganosilsesquioxane contains a constitutional unit (S1) that has a group containing a hydrogen atom capable of forming a hydrogen bond and a constitutional unit (S2) that is different from the constitutional unit (S1) and has a crosslinkable group.

11 . The hardcoat film according to claim 7 ,
wherein the polyorganosilsesquioxane contains a constitutional unit (S1) that has a group containing a hydrogen atom capable of forming a hydrogen bond and a constitutional unit (S2) that is different from the constitutional unit (S1) and has a crosslinkable group.

12 . The hardcoat film according to claim 9 ,
wherein the group containing a hydrogen atom capable of forming a hydrogen bond that the constitutional unit (S1) has is at least one group selected from an amide group, a urethane group, or a urea group.

13 . The hardcoat film according to claim 9 ,
wherein the constitutional unit (S1) has a (meth)acryloyloxy group or a (meth)acrylamide group.

14 . The hardcoat film according to claim 9 ,
wherein the crosslinkable group that the constitutional unit (S2) has is a (meth)acrylamide group.

15 . The hardcoat film according to claim 9 ,
wherein a weight-average molecular weight of the polyorganosilsesquioxane is 10,000 to 1,000,000.

16 . The hardcoat film according to claim 1 ,
wherein the film thickness of the hardcoat layer is 2 to 14 μm.

17 . The hardcoat film according to claim 1 ,
wherein a film thickness of the substrate is 15 to 80 μm.

18 . The hardcoat film according to claim 1 ,
wherein the substrate contains at least one polymer selected from an imide-based polymer or an aramid-based polymer.

19 . An article comprising:
the hardcoat film according to claim 1 .

20 . An image display device comprising:
the hardcoat film according to claim 1 as a surface protection film.

Assignees

• Fujifilm Corp

Inventors

• Akutagawa Nobuyuki
• Matsumoto Ayako
• Fukushima Yuta
• Tamura Akio
• Kitamura Tetsu
• Nagata Yuzo

Classifications

• C09D183/06

  containing silicon bound to oxygen-containing groups (C09D183/12 takes precedence) · CPC title

• C08G77/26

  nitrogen-containing groups · CPC title

• C08G77/06

  Preparatory processes · CPC title

• C08G77/14

  containing silicon bound to oxygen-containing groups · CPC title

• C08G77/20

  containing silicon bound to unsaturated aliphatic groups · CPC title