Multilayer structure and method for producing same, coating liquid, packaging material, and protective sheet for electronic devices

Patent metadata

Field	Value
Publication number	US-11214696-B2
Application number	US-201716302422-A
Country	US
Kind code	B2
Filing date	May 17, 2017
Priority date	May 18, 2016
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

The present invention relates to a multilayer structure including a base (X) and a layer (Y), whereinthe layer (Y) includes an aluminum-containing compound (A) and a phosphorus compound (BH) in which a phosphorus atom having at least one hydroxy group and a polar group are bonded via an alkylene chain having 3 to 20 carbon atoms or a polyoxyalkylene chain based on an alkylene having 3 to 20 carbon atoms, andthe aluminum-containing compound (A) is a compound (Ab) including a reaction product (D) of an aluminum-containing metal oxide (Aa) and an inorganic phosphorus compound (BI).

First claim

The invention claimed is:

1. A multilayer structure comprising a base (X) and a layer (Y), wherein:
the layer (Y) comprises an aluminum-containing compound (A) and a phosphorus compound (BH) in which a phosphorus atom having at least one hydroxy group and a polar group are bonded via an alkylene chain having 3 to 20 carbon atoms or a polyoxyalkylene chain based on an alkylene having 3 to 20 carbon atoms, and
the aluminum-containing compound (A) is a compound (Ab) comprising a reaction product (D) of an aluminum-containing metal oxide (Aa) and an inorganic phosphorus compound (BI),
wherein a ratio M BH /M BI of a number of moles M BH of the phosphorus compound (BH) to a number of moles M BI of the inorganic phosphorus compound (BI) is 1.0×10 −4 ≤M BH /M BI ≤2.0×10 −2 .

2. The multilayer structure according to claim 1 , wherein the polar group of the phosphorus compound (BH) is a hydroxy group.

3. The multilayer structure according to claim 1 , wherein, in the phosphorus compound (BH), the phosphorus atom having the at least one hydroxy group is a functional group selected from the group consisting of a phosphoric acid group, a phosphorous acid group, a phosphonic acid group, a phosphonous acid group, a phosphinic acid group, and a phosphinous acid group.

4. The multilayer structure according to claim 1 , wherein a C/Al ratio as measured by X-ray photoelectron spectroscopy (XPS) is 0.1 to 15.0 between a surface of the layer (Y) and a depth of 5 nm below the surface, the surface not being in contact with the base (X).

5. The multilayer structure according to claim 1 , wherein the layer (Y) has a water contact angle of 25° to 100°.

6. The multilayer structure according to claim 1 , wherein the multilayer structure has an oxygen transmission rate of 2.0 mL/(m 2 ·day·atm) or less at 20° C. and 85% RH.

7. The multilayer structure according to claim 1 , wherein the multilayer structure has a moisture permeability of 2.0 g/(m 2 ·day) or less at 40° C. and 90/0% RH.

8. The multilayer structure according to claim 1 , wherein the base (X) comprises at least one layer selected from the group consisting of a thermoplastic resin film layer and a paper layer.

9. A method for producing the multilayer structure according to claim 1 , the method comprising:
(I-1) applying a coating liquid (S1) to the base (X) to form a precursor layer of the layer (Y) on the base (X), the coating liquid (S1) containing the aluminum-containing compound (A), the inorganic phosphorus compound (BI), the phosphorus compound (BH), and a solvent, the phosphorus compound (BH) in which a phosphorus atom having at least one hydroxy group and a polar group are bonded via an alkylene chain having 3 to 20 carbon atoms or a polyoxyalkylene chain based on an alkylene having 3 to 20 carbon atoms; and
(I-2) treating the precursor layer of the layer (Y) to form the layer (Y).

10. A method for producing the multilayer structure according to claim 1 , the method comprising:
(II-1) applying a coating liquid (S2) to the base (X) to form a precursor layer of the layer (Y), the coating liquid (S2) containing the aluminum-containing compound (A), the inorganic phosphorus compound (BI), and a solvent;
(II-2) applying a coating liquid (T) to the precursor layer, the coating liquid (T) containing the phosphorus compound (BH) and a solvent; and
(II-3) treating the precursor layer of the layer (Y) to form the layer (Y).

11. A packaging material, comprising the multilayer structure according to claim 1 .

12. The packaging material according to claim 11 , further comprising a layer formed by extrusion coating lamination.

13. The packaging material according to claim 11 , being a vertical form-fill-seal bag, a vacuum packaging bag, a pouch, a laminated tube container, an infusion bag, a paper container, a strip tape, a container lid, or an in-mold labeled container.

14. A vacuum insulator comprising the packaging material according to claim 13 , which is the vacuum packaging bag, wherein:
the vacuum packaging bag contains a substance in an interior thereof,
the substance is a core material, and
the interior of the vacuum packaging bag has a reduced pressure.

15. A protective sheet for electronic devices, comprising the multilayer structure according to claim 1 .

16. The protective sheet for electronic devices according to claim 15 , being a protective sheet for protecting a surface of a photoelectric conversion device, an information display device, or a lighting device.

17. An electronic device comprising the protective sheet according to claim 15 .

Assignees

• Kuraray Co

Inventors

• Sasaki Ryoichi
• Morihara Yasushi
• Ota Masahiko
• Nakaya Masakazu
• Ogi Hiroyuki

Classifications

• C09D7/61 Primary

  inorganic · CPC title

• B32B9/00 Primary

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

• C09D7/63 Primary

  organic · CPC title

• B32B2255/26

  Polymeric coating · CPC title

• B32B9/045

  of synthetic resin · CPC title