Interlayer for laminated glass, and laminated glass

Patent metadata

Field	Value
Publication number	US-11084254-B2
Application number	US-201816616432-A
Country	US
Kind code	B2
Filing date	Jun 6, 2018
Priority date	Jun 7, 2017
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

There is provided an interlayer film for laminated glass with which discoloration in the colored part can be suppressed. An interlayer film (1) for laminated glass according to the present invention has a colored part (X) that is colored in plan view, and a non-colored part (Y) that is not colored in plan view; the interlayer film does not contain or contains a light stabilizer in the colored part; the interlayer film contains a light stabilizer in the non-colored part; and a content of the light stabilizer in the entire non-colored part is larger than a content of the light stabilizer in the entire colored part.

First claim

The invention claimed is:

1. An interlayer film for laminated glass having a colored part that is colored in plan view, and a non-colored part that is not colored in plan view,
the interlayer film not containing or containing a light stabilizer in the colored part,
the interlayer film containing a light stabilizer in the non-colored part, and
a content of the light stabilizer in the entire non-colored part being larger than a content of the light stabilizer in the entire colored part.

2. The interlayer film for laminated glass according to claim 1 , wherein a visible light transmittance of the colored part is lower than a visible light transmittance of the non-colored part.

3. The interlayer film for laminated glass according to claim 1 , including a plurality layers in the colored part.

4. The interlayer film for laminated glass according to claim 1 , wherein a number of layers in the colored part is different from a number of layers in the non-colored part.

5. The interlayer film for laminated glass according to claim 1 , including a layer having a glass transition temperature of 10° C. or less.

6. The interlayer film for laminated glass according to claim 1 , including a first layer; and a second layer arranged on a first surface side of the first layer.

7. The interlayer film for laminated glass according to claim 6 , wherein the first layer has a glass transition temperature of 10° C. or less.

8. The interlayer film for laminated glass according to claim 6 , wherein a content of the light stabilizer in the first layer is larger than a content of the light stabilizer in the second layer.

9. The interlayer film for laminated glass according to claim 6 , including a colored layer containing a coloring agent in the colored part, wherein the colored layer is embedded in the first layer, or embedded in the second layer, or arranged between the first layer and the second layer, or arranged on a side opposite to the first layer side of the second layer.

10. The interlayer film for laminated glass according to claim 9 , wherein
when the colored layer is embedded in the first layer, a content of the light stabilizer in the colored layer is smaller than a content of the light stabilizer in the first layer,
when the colored layer is embedded in the second layer, a content of the light stabilizer in the colored layer is smaller than a content of the light stabilizer in the second layer,
when the colored layer is arranged between the first layer and the second layer, a content of the light stabilizer in the colored layer is smaller than a content of the light stabilizer in the first layer, and a content of the light stabilizer in the colored layer is smaller than a content of the light stabilizer in the second layer, and
when the colored layer is arranged on a side opposite to the first layer side of the second layer, a content of the light stabilizer in the colored layer is smaller than a content of the light stabilizer in the second layer.

11. The interlayer film for laminated glass according to claim 9 , wherein the colored layer is embedded in the second layer.

12. The interlayer film for laminated glass according to claim 6 , including a third layer arranged on a second surface side opposite to the first surface of the first layer.

13. The interlayer film for laminated glass according to claim 12 , wherein a content of the light stabilizer in the first layer is larger than a content of the light stabilizer in the third layer.

14. The interlayer film for laminated glass according to claim 1 , wherein the interlayer film is an interlayer film to be arranged between a first lamination glass member and a second lamination glass member for use.

15. The interlayer film for laminated glass according to claim 12 , wherein
the interlayer film is an interlayer film to be attached in an opening part between the external space and the internal space in a vehicle, and
the interlayer film is an interlayer film to be attached to the opening part in such a manner that the second layer side of the second layer and the third layer is located on the external space side.

16. The interlayer film for laminated glass according to claim 1 , wherein
the interlayer film has the colored part in an end part thereof,
the interlayer film is attached in an opening part between the external space and the internal space in a vehicle, and
the interlayer film is attached to the opening part in such a manner that the colored part is located on the upper side of the opening part.

17. The interlayer film for laminated glass according to claim 1 , containing a thermoplastic resin.

18. The interlayer film for laminated glass according to claim 17 , wherein the thermoplastic resin is a polyvinyl acetal resin.

19. The interlayer film for laminated glass according to claim 1 , containing a plasticizer.

20. A laminated glass, comprising:
a first lamination glass member;
a second lamination glass member; and
the interlayer film for laminated glass according to claim 1 ,
the interlayer film for laminated glass being arranged between the first lamination glass member and the second lamination glass member.

21. The laminated glass according to claim 20 , which is used as glass for windshield in an automobile, wherein black coating is not applied on a contact surface between the interlayer film and a lamination glass member on an outer side of the automobile.

Assignees

• Sekisui Chemical Co Ltd

Inventors

• Yoshida Shougo
• Matsumoto Manabu
• Nakayama Kazuhiko
• Okano Moyuru

Classifications

• B32B17/10036 Primary

  comprising two outer glass sheets · CPC title

• B32B17/1066 Primary

  imparting a tint in certain regions only, i.e. shade band · CPC title

• B60J1/001

  Double glazing for vehicles · CPC title

• B32B2605/006

  Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings · CPC title

• B60J1/00

  Windows; Windscreens; Accessories therefor (B60J10/00 takes precedence; air curtains instead of windows B60J9/04 {; sealing strips for windshields B60J10/70; sealing sash guides for sliding window panes B60J10/74; glass partitions inside vehicles to protect occupants against personal attack B60R21/12}) · CPC title