CONDUCTIVE LAMINATE AND METHOD OF PRODUCING THE SAME

• US 20120231248A1
• Filed: 11/01/2010
• Published: 09/13/2012
• Est. Priority Date: 11/11/2009
• Status: Abandoned Application

• Current Assignee: Toray Industries Incorporated
• Original Assignee: Toray Industries Incorporated
• Inventors: Sato, Yoshikazu, Watanabe, Osamu
• Application Number:
  US13/509,173
• Publication Number:
  US 20120231248A1
• Time in Patent Office: Days
• US Class Current: 428/213
• CPC Class Codes: B32B 2307/202 Conductive
• CPC Class Codes: B32B 2457/208 Touch screens
• CPC Class Codes: B32B 27/308 comprising acrylic (co)polymers
• CPC Class Codes: Y10T 428/2495 Thickness [relative or absolute]
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]

Abstract

Provided is a conductive laminate comprising a base resin layer and a conductive layer on at least one surface of a substrate, by stacking in the sequential order of the base resin layer and the conductive layer from the substrate side, and in which the base resin layer comprises a resin including a urethane acrylate resin having a glycol skeleton, and a grafted resin having a hydrophilic group among side chains thereof. A touch panel using the conductive laminate of the present invention exhibits good writing sense, high input sensitivity and favorable durability. In addition, the conductive laminate of the present invention is preferably used for electrode members, which are employed in display products such as a liquid crystal display, an organic electro-luminescence, and an electronic paper as well as solar cell modules, and so forth.

Claims

1. A conductive laminate comprising a base resin layer and a conductive layer on at least one surface of a substrate, by stacking in a sequential order of the base resin layer and the conductive layer from the substrate side,

wherein the base resin layer comprises a urethane acrylate resin having a glycol skeleton, and a grafted resin having a hydrophilic group among side chains thereof.

2. The conductive laminate according to claim 1, wherein the conductive layer comprises carbon nanotubes.

3. The conductive laminate according to claim 1, wherein the glycol skeleton is a polyethyleneglycol skeleton and/or polypropyleneglycol skeleton.

4. The conductive laminate according to claim 1, wherein the urethane acrylate resin is a urethane acrylate resin of which the number of functional groups at an acrylate part in one urethane acrylate molecule is 2.

5. The conductive laminate according to claim 1, wherein the acrylate part of the urethane acrylate resin is combined with another acrylate part by polymerization.

6. The conductive laminate according to claim 1, wherein a ratio between a thickness T of the substrate and a thickness t of the base resin layer satisfies 0.040≦

t/T≦

0.080.

7. The conductive laminate according to claim 1, wherein a total luminous transmittance is 80% or more according to MS K7361-1 (1997) when light is incident from the conductive layer side.

8. The conductive laminate according to claim 1, wherein the substrate is a transparent substrate.

12. A touch panel comprising the conductive laminate according to claim 1.

9. A method of producing a conductive laminate, comprising:

forming a base resin layer on a substrate, and then, forming a conductive layer on the base resin layer, wherein the base resin layer comprises a urethane acrylate resin having a glycol skeleton and a grafted resin having a hydrophilic group among side chains.

10. The method of producing a conductive laminate according to claim 9, wherein the conductive layer is formed by applying water dispersion that contains carbon nanotubes or silver nanowires, and then, drying the same.

11. The method of preparing a conductive laminate according to claim 9, wherein a protection layer is provided on the conductive layer.