# US 2014/0154517 A1 · Gas-barrier laminate

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- Number: US 2014/0154517 A1
- Document ID: US20140154517A1
- Status: Published application
- Kind: A1
- Application number: 14/235,671
- Filed: 2012-07-27
- Published: 2014-06-05
- Earliest claimed: 2011-08-04
- Assignees: Mitsubishi Plastics, Inc.
- Inventors: Yasushi Sasaoka; Chiharu Okawara; Tooru Hachisuka
- Web page: https://patentgrep.com/patent/US20140154517A1

## CPC

- B32B 27/08: of synthetic resin
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/36: comprising polyesters
- C09D 1/00: Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/20: Inorganic coating
- B32B 2307/412: Transparent
- B32B 2307/518: bi-axially
- B32B 2307/7242: Non-permeable
- B32B 2439/80: Medical packaging
- Y10T 428/31565: Next to polyester [polyethylene terephthalate, etc.]
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

In the gas-barrier laminate having an inorganic thin layer formed on at least one surface of a substrate having a polyethylene naphthalate layer, provided by the present invention is a gas-barrier laminate having not only high water vapor barrier property and oxygen barrier property abut also excellent adhesion between the substrate and the inorganic thin layer. The said gas-barrier laminate, comprising: a substrate comprising a polyethylene naphthalate layer; a layer formed from a composition comprising an acryl polyol and an isocyanate compound on at least one surface of the substrate; and an inorganic thin layer, arranged in the stated order.

## Claims

### Claim 1

A gas-barrier laminate, comprising:
a substrate comprising a polyethylene naphthalate layer;
a layer formed from a composition comprising an acryl polyol and an isocyanate compound on one a surface of the substrate; and
an inorganic thin layer, arranged in the stated order.

### Claim 2 (depends on 1)

The gas-barrier laminate according to claim 1, wherein the substrate further comprises a polyethylene terephthalate layer.

### Claim 3 (depends on 2)

The gas-barrier laminate according to claim 2, wherein the substrate further comprises a mixed layer of polyethylene naphthalate and polyethylene terephthalate.

### Claim 4 (depends on 1)

The gas-barrier laminate according to claim 1, wherein a mass ratio of the acryl polyol to the isocyanate compound, (acryl polyol)/(isocyanate compound), is from 0.01 to 0.5.

### Claim 5 (depends on 1)

The gas-barrier laminate according to claim 1, wherein the gas-barrier laminate is suitable as a packaging material for a medical purpose.