Method for manufacturing hardcoat film and hardcoat film

Patent metadata

Field	Value
Publication number	US-10155870-B2
Application number	US-201715460867-A
Country	US
Kind code	B2
Filing date	Mar 16, 2017
Priority date	Sep 30, 2014
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

The invention is directed to a method for manufacturing a hardcoat film including a hardcoat layer having a surface of which a water contact angle is 65° or less by applying, drying, and curing a composition for forming the hardcoat layer on a base material film, in which the composition for forming the hardcoat layer contains the components (a) to (d) as defined herein, and, in a case in which a total solid content of the composition for forming the hardcoat layer is set to 100% by mass, a content of the component (b) is 40% to 80% by mass, a content of the component (c) is 10% to 40% by mass, and a content of the component (d) is 10% to 40% by mass.

First claim

What is claimed is:

1. A method for manufacturing a hardcoat film comprising a hardcoat layer having a surface of which a water contact angle is 65° or less, the method comprising:
applying a composition for forming the hardcoat layer on a base material film and drying and curing the composition,
wherein the composition for forming the hardcoat layer comprises at least following (a) to (d), and, in a case in which a total solid content of the composition for forming the hardcoat layer is set to 100% by mass, a content of the following (b) is 40% to 80% by mass, a content of the following (c) is 10% to 40% by mass, and a content of the following (d) is 10% to 40% by mass,
(a) a mixed solvent which is made by mixing a low-surface tension solvent having a surface tension of 10 to 22 mN/m and a standard-surface tension solvent having a surface tension of more than 22 mN/m and in which a content of the low-surface tension solvent is 5% by mass to 40% by mass of a total amount of the mixed solvent,
(b) a polymerizable compound which has three or more ethylenic unsaturated double-bonding groups in a molecule and in which an equivalent of the ethylenic unsaturated bonding groups is 80 to 130,
(c) inorganic fine particles having reactivity to epoxy groups or ethylenic unsaturated double-bonding groups, and
(d) a compound which has one or more alicyclic epoxy groups in a molecule and a molecular weight of 300 or less.

2. The method for manufacturing a hardcoat film according to claim 1 ,
wherein the low-surface tension solvent comprises at least one selected from tert-butyl alcohol, tetrafluoroethylene, triethylamine, cyclopentane, heptane, methyl(nonafluorobutyl)ether, and ethyl(nonafluorobutyl)ether.

3. The method for manufacturing a hardcoat film according to claim 1 ,
wherein the low-surface tension solvent is tert-butyl alcohol.

4. The method for manufacturing a hardcoat film according to claim 1 ,
wherein the standard-surface tension solvent comprises at least one selected from methyl ethyl ketone, acetone, methyl isobutyl ketone, methyl acetate, cyclohexanone, and isopropyl acetate.

5. The method for manufacturing a hardcoat film according to claim 2 ,
wherein the standard-surface tension solvent comprises at least one selected from methyl ethyl ketone, acetone, methyl isobutyl ketone, methyl acetate, cyclohexanone, and isopropyl acetate.

6. The method for manufacturing a hardcoat film according to claim 3 ,
wherein the standard-surface tension solvent comprises at least one selected from methyl ethyl ketone, acetone, methyl isobutyl ketone, methyl acetate, cyclohexanone, and isopropyl acetate.

7. The method for manufacturing a hardcoat film according to claim 1 ,
wherein an average primary particle diameter of the inorganic fine particles (c) is 10 nm to 100 nm.

8. The method for manufacturing a hardcoat film according to claim 2 ,
wherein an average primary particle diameter of the inorganic fine particles (c) is 10 nm to 100 nm.

9. The method for manufacturing a hardcoat film according to claim 3 ,
wherein an average primary particle diameter of the inorganic fine particles (c) is 10 nm to 100 nm.

10. The method for manufacturing a hardcoat film according to claim 4 ,
wherein an average primary particle diameter of the inorganic fine particles (c) is 10 nm to 100 nm.

11. The method for manufacturing a hardcoat film according to claim 5 ,
wherein an average primary particle diameter of the inorganic fine particles (c) is 10 nm to 100 nm.

12. The method for manufacturing a hardcoat film according to claim 6 ,
wherein an average primary particle diameter of the inorganic fine particles (c) is 10 nm to 100 nm.

13. The method for manufacturing a hardcoat film according to claim 1 ,
wherein the compound (d) further has an ethylenic unsaturated double-bonding group.

14. The method for manufacturing a hardcoat film according to claim 2 ,
wherein the compound (d) further has an ethylenic unsaturated double-bonding group.

15. The method for manufacturing a hardcoat film according to claim 4 ,
wherein the compound (d) further has an ethylenic unsaturated double-bonding group.

16. The method for manufacturing a hardcoat film according to claim 5 ,
wherein the compound (d) further has an ethylenic unsaturated double-bonding group.

17. The method for manufacturing a hardcoat film according to claim 11 ,
wherein the compound (d) further has an ethylenic unsaturated double-bonding group.

Assignees

• Fujifilm Corp

Inventors

• Otani Taketo
• Takada Katsuyuki
• Suzuki Masaaki

Classifications

• C08K7/26

  Silicon- containing compounds · CPC title

• C09D7/70

  characterised by shape, e.g. fibres, flakes or microspheres · CPC title

• C08K2201/011

  Nanostructured additives · CPC title

• B32B27/20

  using fillers, pigments, thixotroping agents · CPC title

• B05D1/305

  Curtain coating · CPC title