HEAT RAY-SHIELDING MATERIAL

• US 20140004338A1
• Filed: 09/03/2013
• Published: 01/02/2014
• Est. Priority Date: 03/25/2011
• Status: Abandoned Application

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: KIYOTO, Naoharu, SAWANOBORI, Osamu
• Application Number:
  US14/016,926
• Publication Number:
  US 20140004338A1
• Time in Patent Office: Days
• US Class Current: 428/328
• CPC Class Codes: B32B 17/10633 Infrared radiation absorbing or reflecting agents
• CPC Class Codes: B32B 17/10678 comprising UV absorbers or stabilizers, e.g. antioxidants
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/10779 containing polyester
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: C08K 2003/0806 Silver
• CPC Class Codes: C08K 3/08 Metals
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C08K 7/06 Elements
• CPC Class Codes: C09D 5/004 Reflecting paints; Signal paints
• CPC Class Codes: C09D 5/32 Radiation-absorbing paints protection against X-, gamma- or corpuscular radiation G21F
• CPC Class Codes: C09D 5/38 Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
• CPC Class Codes: C09D 7/48 Stabilisers against degradation by oxygen, light or heat
• CPC Class Codes: C09D 7/61 inorganic
• CPC Class Codes: C09D 7/70 characterised by shape, e.g. fibres, flakes or microspheres
• CPC Class Codes: C09J 2301/41 additives as essential feature of the carrier layer
• CPC Class Codes: C09J 7/29 Laminated material metallised plastics C09J7/22
• CPC Class Codes: G02B 5/206 comprising particles embedded in a solid matrix
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: G02B 5/282 reflecting for infrared and transparent for visible light, e.g. heat reflectors, laser protection
• CPC Class Codes: Y10T 428/25 : Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/256 : Heavy metal or aluminum or compound thereof

Abstract

Provided is a heat ray-shielding material, including: a metal particle-containing layer including at least one type of metal particles; and an overcoat layer in close contact with at least one surface of the metal particle-containing layer, wherein the metal particles comprise 60% by number or more of substantially hexagonal to substantially circular tabular metal particles, and wherein principal planes of the substantially hexagonal to substantially circular tabular metal particles are plane-oriented within a range from 0° to ±30° on average in relation to one surface of the metal particle-containing layer.

Claims

1. A heat ray-shielding material, comprising:

a metal particle-containing layer including at least one type of metal particles; and

an overcoat layer in close contact with at least one surface of the metal particle-containing layer,

wherein the metal particles comprise 60% by number or more of substantially hexagonal to substantially circular tabular metal particles, and

wherein principal planes of the substantially hexagonal to substantially circular tabular metal particles are plane-oriented within a range from 0°

to ±

30°

on average in relation to one surface of the metal particle-containing layer.

2. The heat ray-shielding material according to claim 1, further comprising an adhesive layer.

3. The heat ray-shielding material according to claim 1, further comprising an ultraviolet absorbing layer containing at least one type of ultraviolet absorber.

4. The heat ray-shielding material according to claim 3, wherein the ultraviolet absorbing layer is either an overcoat layer or an adhesive layer.

5. The heat ray-shielding material according to claim 2, wherein the overcoat layer is an adhesive layer.

6. The heat ray-shielding material according to claim 1, wherein with d representing a thickness of the metal particle-containing layer, 80% by number or more of the substantially hexagonal to substantially circular tabular metal particles are present within a range of d/2 from a surface of the metal particle-containing layer.

7. The heat ray-shielding material according to claim 1, wherein 80% by number or more of the substantially hexagonal to substantially circular tabular metal particles are present within a range of d/3 from a surface of the metal particle-containing layer.

8. The heat ray-shielding material according to claim 7, wherein the overcoat layer is in close contact with the surface of the metal particle-containing layer which is closer to 80% by number or more of the substantially hexagonal to substantially circular tabular metal particles.

9. The heat ray-shielding material according to claim 1, wherein an ultraviolet light transmittance of the heat ray-shielding material is 5% or less.

10. The heat ray-shielding material according to claim 1, wherein a coefficient of variation in a particle size distribution of the substantially hexagonal to substantially circular tabular metal particles is 30% or less.

11. The heat ray-shielding material according to claim 1, wherein an average particle diameter of the substantially hexagonal to substantially circular tabular metal particles is 70 nm to 500 nm, and an aspect ratio (average particle diameter/average particle thickness) of the substantially hexagonal to substantially circular tabular metal particles is 8 to 40.

12. The heat ray-shielding material according to claim 1, wherein the tabular metal particles comprise silver.

13. The heat ray-shielding material according to claim 1, wherein a visible light transmittance of the heat ray-shielding material is 70% or more.

14. The heat ray-shielding material according to claim 3, wherein the ultraviolet absorber is at least one selected from the group consisting of a benzophenone-based ultraviolet absorber, a benzotriazole-based ultraviolet absorber and a triazine-based ultraviolet absorber.

15. The heat ray-shielding material according to claim 1, further comprising a substrate on a surface of the metal particle-containing layer opposite to the surface of the metal particle-containing layer which is closer to 80% by number or more of the substantially hexagonal to substantially circular tabular metal particles.

16. The heat ray-shielding material according to claim 1, further comprising a metal oxide particle-containing layer including at least one type of metal oxide particles.

17. The heat ray-shielding material according to claim 16, wherein the metal oxide particles are tin-doped indium oxide particles.

18. A laminated structure, comprising:

a heat ray-shielding material; and

a sheet of either glass or plastic,

wherein the heat ray-shielding material and the sheet of either glass or plastic are laminated on each other,

wherein the heat ray-shielding material comprises;

a metal particle-containing layer including at least one type of metal particles; and

an overcoat layer in close contact with at least one surface of the metal particle-containing layer,

wherein the metal particles comprise 60% by number or more of substantially hexagonal to substantially circular tabular metal particles, and

wherein principal planes of the substantially hexagonal to substantially circular tabular metal particles are plane-oriented within a range from 0°

to ±

30°

on average in relation to one surface of the metal particle-containing layer.