Inorganic film and laminate

• US 9,844,926 B2
• Filed: 06/27/2014
• Issued: 12/19/2017
• Est. Priority Date: 07/01/2013
• Status: Active Grant

• Current Assignee: Sekisui Chemical Company Limited (Sekisui)
• Original Assignee: Sekisui Chemical Company Limited (Sekisui)
• Inventors: Asano, Motohiko, Okuyama, Hiroaki, Asuka, Masahiro
• Primary Examiner(s): Khatri, Prashant J
• Application Number:
  US14/653,774
• Publication Number:
  US 20150321455A1
• Time in Patent Office: 1,271 Days
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2307/418 Refractive
• CPC Class Codes: B32B 2307/712 Weather resistant
• CPC Class Codes: B32B 2307/7242 Non-permeable
• CPC Class Codes: B32B 2307/7246 Water vapor barrier
• CPC Class Codes: B32B 27/06 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 layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/322 comprising halogenated polyolefins, e.g. PTFE
• CPC Class Codes: C08J 2367/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds; C08J2367/06 takes precedence
• CPC Class Codes: C08J 7/042 with two or more layers, where at least one layer of a composition contains a polymer binder
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/048 Forming gas barrier coatings
• CPC Class Codes: C23C 14/0084 Producing gradient compositions
• CPC Class Codes: C23C 14/024 Deposition of sublayers, e.g. to promote adhesion of the coating C23C14/027 takes precedence
• CPC Class Codes: C23C 14/08 Oxides C23C14/10 takes precedence
• CPC Class Codes: C23C 14/081 of aluminium, magnesium or beryllium
• CPC Class Codes: C23C 14/086 of zinc, germanium, cadmium, indium, tin, thallium or bismuth
• CPC Class Codes: C23C 14/10 Glass or silica
• CPC Class Codes: C23C 14/562 for coating elongated substrates
• CPC Class Codes: G02B 1/113 : using inorganic layer materials only
• CPC Class Codes: Y10T 428/24942 : including components having same physical characteristic in differing degree

Abstract

There are provided an inorganic film in which the light transmittance is not decreased also when the inorganic film is laminated on organic material such as a resin, and a laminate. An inorganic film 13 which comprises a refractive index gradient film 13a having a refractive index changing continuously from n1 to n2 (n1<n2) and being a functional film; and a refractive index gradient film 13b having a refractive index changing continuously from n3 to n4 (n4<n3) and being a functional film, and in which further, a difference between n2 and n3 is 0.1 or less.

Claims

1. An inorganic film comprising a refractive index gradient film A being composed of an inorganic material, having a refractive index changing continuously from n1 to n2 from one surface toward the other surface, and wherein n1<

n2 and being a functional film; and

a refractive index gradient film B being composed of an inorganic material, having a refractive index changing continuously from n3 to n4 from one surface toward the other surface, and wherein n4<

n3 and being a functional film;

the refractive index gradient film B being laminated on a surface of the refractive index gradient film A on a side where the refractive index is n2 with a surface side where the refractive index is n3 being in direct or indirect contact with the surface of the refractive index gradient film A;

a difference between n2 and n3 being 0.1 or less;

the inorganic material being a complex oxide comprising Zn, Sn, and at least one of Si and Al.

2. The inorganic film according to claim 1, wherein at least one of the refractive index gradient film A and the refractive index gradient film B comprises a complex oxide comprising Si, Zn, and Sn.

3. The inorganic film according to claim 2, wherein in the complex oxide comprising Si, Zn, and Sn, a ratio Xs between Sn and a sum of Zn and Sn satisfies 70>

Xs>

0.

4. The inorganic film according to claim 1, wherein at least one of the refractive index gradient film A and the refractive index gradient film B comprises a complex oxide comprising Al, Zn, and Sn.

5. The inorganic film according to claim 1, wherein the refractive index gradient film A comprises a complex oxide comprising Al, Zn, and Sn, and the refractive index gradient film B comprises a complex oxide comprising Si, Zn, and Sn.

6. A laminate, wherein the inorganic film according to any one of claims 1 to 5 is formed on an organic film, and when a refractive index of the organic film is designated as n0, n0≦

n1 is satisfied.

7. The laminate according to claim 6, wherein a resin layer is formed on the inorganic film, and when a refractive index of the resin layer is designated as n5, n4≧

n5 is satisfied.