# US 10,479,055 B2 · Multilayer structure, packaging material and product including same, and protective sheet for electronic device

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- Number: US 10,479,055 B2
- Document ID: US10479055B2
- Status: Granted
- Kind: B2
- Application number: 15/538,985
- Filed: 2015-12-24
- Published: 2018-01-25
- Granted: 2019-11-19
- Earliest claimed: 2014-12-24
- Assignees: Kuraray Co., Ltd.
- Applicants: Kuraray Co., Ltd.
- Inventors: Ryoichi Sasaki; Yasutaka Inubushi
- Web page: https://patentgrep.com/patent/US10479055B2

## CPC

- B32B 27/08: of synthetic resin
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/00: Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)}
- B32B 27/10: of paper or cardboard
- B32B 27/26: using curing agents
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/327: {comprising polyolefins obtained by a metallocene or single-site catalyst}
- B32B 27/34: comprising polyamides
- B32B 27/36: comprising polyesters
- B65D 65/40: 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)}
- B32B 2250/03: 3 layers
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/12: on paper layer
- B32B 2255/26: Polymeric coating
- B32B 2255/28: Multiple coating on one surface
- B32B 2307/304: Insulating
- B32B 2307/7244: Oxygen barrier
- B32B 2307/7246: Water vapor barrier
- B32B 2307/748: Releasability
- B32B 2439/00: Containers; Receptacles
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES

## Abstract

The present invention relates to a multilayer structure including a base (X) and a layer (Y) stacked on the base (X). The layer (Y) contains an aluminum-containing compound (A), an organic phosphorus compound (BO), and a polymer (F) having an ether bond and having no glycosidic bond.

## Claims

### Claim 1

A multilayer structure comprising a base (X) and a layer (Y) stacked on the base (X), wherein
the layer (Y) comprises an aluminum-containing compound (A), an organic phosphorus compound (BO), and a polymer (F) having an ether bond and having no glycosidic bond, and
the organic phosphorus compound (BO) is a polymer (BOa) having the phosphorus atom-containing functional group.

### Claim 2 (depends on 1)

The multilayer structure according to claim 1, wherein 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).

### Claim 3 (depends on 1)

The multilayer structure according to claim 1, wherein a weight ratio between the organic phosphorus compound (BO) and the polymer (F) is 30:70 to 99:1.

### Claim 4 (depends on 2)

The multilayer structure according claim 2, wherein a ratio WBO/WBI between a weight WBI of an inorganic phosphorus compound (BI) and a weight WBO of the organic phosphorus compound (BO) satisfies a relationship of 0.01/99.99≤WBO/WBI<6.00/94.00.

### Claim 5 (depends on 1)

The multilayer structure according to claim 1, wherein the polymer (BOa) having the phosphorus atom-containing functional group is a polymer having at least one 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.

### Claim 6 (depends on 1)

The multilayer structure according to claim 1, wherein the polymer (F) is polyethylene glycol or polyethylene oxide.

### Claim 7 (depends on 1)

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.

### Claim 8 (depends on 1)

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

### Claim 9 (depends on 8)

The packaging material according to claim 8, further comprising a layer formed by extrusion coating lamination.

### Claim 10 (depends on 8)

The packaging material according to claim 8, wherein the packaging material is 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.

### Claim 11 (depends on 8)

A product comprising the packaging material according to claim 8 in at least a part of the product.

### Claim 12 (depends on 11)

The product according to claim 11, wherein the product is adapted to function as a vacuum insulator, the product having an interior with a reduced pressure, the product comprising a substance contained in the interior, the substance being a core material.

### Claim 13 (depends on 1)

A protective sheet, comprising the multilayer structure according to claim 1.

### Claim 14 (depends on 13)

The protective sheet according to claim 13, wherein the protective sheet is suitable for protecting a surface of a photoelectric conversion device, information display device, or lighting device.

### Claim 15 (depends on 13)

An electronic device comprising the protective sheet according to claim 13.

### Claim 16 (depends on 1)

The multilayer structure according to claim 1, wherein the polymer (BOa) having the phosphorus atom-containing functional group comprises polymers of phosphono(meth)acrylic acid ester compounds or polymers of vinylphosphonic acid compounds.