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

Patent metadata

Field	Value
Publication number	US-11692106-B2
Application number	US-202117538031-A
Country	US
Kind code	B2
Filing date	Nov 30, 2021
Priority date	May 18, 2016
Publication date	Jul 4, 2023
Grant date	Jul 4, 2023

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 coating liquid, comprising:
an aluminum-containing compound (A);
an inorganic phosphorus compound (B1);
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
a solvent;
wherein a ratio M BH /M BT of a number of moles M BH of the phosphorus compound (BH) to a number of moles M BT of the inorganic phosphorus compound (BI) is 1.0×10 −4 ≤M BH /M BT ≤2.0×10 −2 .

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

3. The coating liquid 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 coating liquid 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 and a phosphonic acid group.

5. The coating liquid according to claim 1 , wherein the polar group of the phosphorus compound (BH) is a carboxy group.

6. The coating liquid according to claim 1 , wherein the inorganic phosphorus compound (BI) is a phosphorus oxoacid, or a derivative or salt thereof.

7. The coating liquid according to claim 6 , wherein the phosphorus oxoacid is at least one selected from the group consisting of phosphoric acid, diphosphoric acid, triphosphoric acid, a polyphosphoric acid formed by condensation of 4 or more molecules of phosphoric acid, phosphorous acid, phosphonic acid, phosphonous acid, phosphinic acid, and phosphinous acid.

8. The coating liquid according to claim 1 , wherein the inorganic phosphorus compound (BI) comprises phosphoric acid.

9. The coating liquid according to claim 1 , wherein the solvent comprises water.

10. The coating liquid according to claim 1 , wherein the solvent comprises water and an alcohol.

11. The coating liquid according to claim 1 , wherein a molar ratio between aluminum atoms and phosphorus atoms in the coating liquid, as expressed by [aluminum atoms]:[phosphorus atoms], is from 1.0:1.0 to 3.6:1.0.

12. The coating liquid according to claim 1 , which has a solids concentration of 1 to 20 mass %, based on a total mass of the coating liquid.

13. The coating liquid according to claim 1 , which has a viscosity of 3,000 mPa·s or less, as measured with a Brookfield rotary viscometer.

Assignees

• Kuraray Co

Inventors

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

Classifications

• C09D7/61 Primary

  inorganic · CPC title

• B32B9/06

  of paper or cardboard · CPC title

• B65D65/40

  Applications of laminates for particular packaging purposes {(B65D1/0215, B65D1/28, B65D3/22, B65D5/0281, B65D5/563, B65D9/30, B65D29/02, B65D31/02, B65D75/26, B65D77/2024, B65D81/1275, B65D81/3811, B65D81/3823, B65D81/3834, B65D81/3846, B65D81/3858, B65D81/3874, B65D81/3886, B65D81/3897 take precedence; laminates per se or laminated packages characterised by the composition or)} · CPC title

• A61J1/10

  Bag-type containers · CPC title

• B32B2307/724

  Permeability to gases, adsorption · CPC title