Adhesive layer-equipped transparent plate and adhesive layer

Patent metadata

Field	Value
Publication number	US-2017101340-A1
Application number	US-201615385175-A
Country	US
Kind code	A1
Filing date	Dec 20, 2016
Priority date	Sep 5, 2014
Publication date	Apr 13, 2017
Grant date	—

Abstract

To provide an adhesive layer-equipped transparent plate, which satisfies both visibility and impact resistance, and which is suitable for protection of an in-vehicle display device. The adhesive layer-equipped transparent plate according to the present invention comprises a transparent plate and an adhesive layer provided on one surface of the transparent plate. The transparent plate is a plate glass having a plate thickness of from 0.4 to 3.0 mm. The adhesive layer has a storage shear modulus of at most 30 MPa at a temperature of 25° C. and at a frequency of 1 Hz, a storage shear modulus of at least 50 MPa at a temperature of 25° C. and at a frequency of 40 kHz, and a loss tangent tanδ of at least 0.1 at a temperature of 25° C. and at a frequency of 40 kHz.

First claim

What is claimed is:

1 . An adhesive layer-equipped transparent plate, which comprises
a transparent plate, and an adhesive layer provided on one surface of the transparent plate, wherein the transparent plate is a plate glass having a plate thickness of from 0.4 to 3.0 mm, and the adhesive layer has a storage shear modulus of at most 30 MPa at a temperature of 25° C. and at a frequency of 1 Hz, a storage shear modulus of at least 50 MPa at a temperature of 25° C. and at a frequency of 40 kHz, and a loss tangent tanδ of at least 0.1 at a temperature of 25° C. and at a frequency of 40 kHz.

2 . An adhesive layer-equipped transparent plate, which comprises
a transparent plate, and an adhesive layer provided on one surface of the transparent plate, wherein the transparent plate is a plate glass having a plate thickness of from 0.6 to 3.0 mm, and the adhesive layer has a storage shear modulus of at most 30 MPa at a temperature of 25° C. and at a frequency of 1 Hz, a storage shear modulus of at least 50 MPa at a temperature of 25° C. and at a frequency of 40 kHz, and a loss tangent tanδ of at least 0.1 at a temperature of 25° C. and at frequency of 40 kHz.

3 . The adhesive layer-equipped transparent plate according to claim 1 , wherein the plate glass is a tempered glass having a compressive stress layer, the thickness of the compressive stress layer is at least 15 μm, and the surface compressive stress in the compressive stress layer is at least 650 MPa.

4 . The adhesive layer-equipped transparent plate according to claim 1 , wherein the adhesive layer has a storage shear modulus of at most 15 MPa at a temperature of 25° C. and at a frequency of 1 Hz.

5 . The adhesive layer-equipped transparent plate according to claim 1 , wherein the adhesive layer has a storage shear modulus of at least 80 MPa at a temperature of 25° C. and at a frequency of 40 kHz.

6 . The adhesive layer-equipped transparent plate according to claim 1 , wherein the adhesive layer has an interfacial peel strength of at least 600 N/225 mm 2 at a tensile speed of 4 m/s.

7 . The adhesive layer-equipped transparent plate according to claim 1 , wherein the thickness of the adhesive layer is from 30 to 2,000 μm.

8 . An adhesive layer capable of bonding a transparent plate and a display device, which has a storage shear modulus of at most 30 MPa at a temperature of 25° C. and at a frequency of 1 Hz, a storage shear modulus of at least 50 MPa at a temperature of 25° C. and at a frequency of 40 kHz, and a loss tangent tanδ of at least 0.1 at a temperature of 25° C. and at a frequency of 40 kHz.

9 . The adhesive layer according to claim 8 , which has a storage shear modulus of at most 15 MPa at a temperature of 25° C. and at a frequency of 1 Hz.

10 . The adhesive layer according to claim 8 , which has a storage shear modulus of at least 80 MPa at a temperature of 25° C. and at frequency of 40 kHz.

11 . The adhesive layer according to claim 8 , which has an interfacial peel strength of at least 600 N/225 mm 2 at a tensile speed of 4 m/s.

12 . The adhesive layer according to claim 8 , wherein the thickness of the adhesive layer is from 30 to 2,000 μm.

Assignees

• Asahi Glass Co Ltd

Inventors

• Inoue Atsushi
• Yamamoto Isao
• Hashimoto Kyohei
• Mishiro Hitoshi
• Takano Tomohiro
• Sakamoto Hiroshi
• Oki Satoshi
• Kakuta Junichi
• Shibuya Takashi

Classifications

• C03C17/32 Primary

  with synthetic or natural resins (C03C17/30 takes precedence) · CPC title

• C09J2451/00

  Presence of graft polymer · CPC title

• C03C17/3405

  with at least two coatings of organic materials (C03C17/36, C03C17/42 take precedence) · CPC title

• C03C2218/355

  Temporary coating · CPC title

• C09J2400/143

  in the substrate · CPC title