Antistatic sheet, and packaging material and electronic device including the same

Patent metadata

Field	Value
Publication number	US-10240062-B2
Application number	US-201515503132-A
Country	US
Kind code	B2
Filing date	Jul 14, 2015
Priority date	Aug 13, 2014
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

The present invention provides a novel antistatic sheet having high gas barrier performance, high water vapor barrier performance, and antistatic performance, and a packaging material and an electronic device that include the antistatic sheet. The present invention relates to an antistatic sheet including a multilayer structure including a base (X), a layer (Z) containing an aluminum atom, and a layer (Y). The layer (Y) contains a polymer (A) having a vinylphosphonic acid unit, and the layer (Y) has a surface electrical resistivity of 1.0×10 6 Ω/sq or more and 4.0×10 13 Ω/sq or less.

First claim

The invention claimed is:

1. An antistatic sheet, comprising
a multilayer structure comprising: a base (X); a layer (Z) containing an aluminum atom; and a layer (Y),
wherein
the layer (Y) contains a polymer (A) comprising a phosphonic acid unit, and
the layer (Y) has a surface electrical resistivity of 1.0×10 6 Ω/sq or more and 4.0×10 13 Ω/sq or less.

2. The antistatic sheet according to claim 1 , wherein the polymer (A) is a polymer (Aa) comprising a vinylphosphonic acid unit.

3. The antistatic sheet according to claim 1 , wherein the multilayer structure comprises at least one pair of the layer (Z) and the layer (Y) that are disposed contiguous to each other.

4. The antistatic sheet according to claim 1 , wherein
the layer (Z) comprises a layer (Z 1 ) containing a reaction product (E),
the reaction product (E) is formed by a reaction between a metal oxide (C) containing an aluminum atom and a phosphorus compound (D), and
in an infrared absorption spectrum of the layer (Z 1 ), a maximum absorption wavenumber in a region of 800 to 1,400 cm −1 is 1,080 to 1,130 cm −1 .

5. The antistatic sheet according to claim 1 , wherein the layer (Z) comprises a deposited layer (Z 3 ) of aluminum oxide.

6. The antistatic sheet according to claim 1 , having an oxygen transmission rate of 2 mL/(m 2 ·day·atm) or less at 20° C. and 85% RH.

7. A packaging material, comprising the antistatic sheet according to claim 1 .

8. An electronic device, comprising the antistatic sheet according to claim 1 .

Assignees

• Kuraray Co

Inventors

• Inubushi Yasutaka
• Sasaki Ryoichi
• Shimizu Yuji
• Nakaya Masakazu

Classifications

• C08J7/0423

  with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder · CPC title

• B32B9/00

  Layered products comprising a {layer of a} particular substance not covered by groups B32B11/00 - B32B29/00 · CPC title

• B65D81/24

  Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants (with thermal insulation B65D81/38) · CPC title

• C08J2443/02

  Homopolymers or copolymers of monomers containing phosphorus · CPC title

• B32B9/045

  of synthetic resin · CPC title