# US 11,078,372 B2 · Coating liquid and gas barrier laminate

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- Number: US 11,078,372 B2
- Document ID: US11078372B2
- Status: Granted
- Kind: B2
- Application number: 15/955,166
- Filed: 2018-04-17
- Published: 2018-08-16
- Granted: 2021-08-03
- Earliest claimed: 2015-10-20
- Assignees: Toppan Printing Co., Ltd.
- Applicants: Toppan Printing Co., Ltd.
- Inventors: Miyu Matsui; Iori Takeuchi; Masayuki Kashimura
- Web page: https://patentgrep.com/patent/US11078372B2

## CPC

- C09D 7/45: Anti-settling agents
- C09D 7/60: non-macromolecular (C09D7/41-C09D7/48 take precedence)
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/08: of synthetic resin
- B32B 27/18: characterised by the use of special additives
- B32B 27/36: comprising polyesters
- C08G 18/0866: {the dispersing or dispersed phase being an aqueous medium}
- C08G 18/42: Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G 18/4236: {containing only aliphatic groups}
- C09D 7/40: Additives
- C09D 7/61: inorganic
- C09D 167/00: Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain (based on polyester-amides C09D177/12; based on polyester-imides C09D179/08); Coating compositions based on derivatives of such polymers
- C09D 175/06: from polyesters
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 2250/02: 2 layers
- B32B 2250/03: 3 layers
- B32B 2250/24: All layers being polymeric
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/20: Inorganic coating
- B32B 2255/26: Polymeric coating
- B32B 2255/28: Multiple coating on one surface
- B32B 2264/10: Inorganic particles
- B32B 2264/1025: Zinc oxide
- B32B 2307/412: Transparent
- B32B 2307/7242: Non-permeable
- B32B 2307/7244: Oxygen barrier
- B32B 2333/00: Polymers of unsaturated acids or derivatives thereof
- B32B 2367/00: Polyesters, e.g. PET, i.e. polyethylene terephthalate
- B32B 2439/40: Closed containers
- B32B 2439/70: Food packaging
- B32B 2439/80: Medical packaging
- C08K 3/013: Fillers, pigments or reinforcing additives
- C08K 3/20: Oxides; Hydroxides {(graphene oxides C08K3/042)}
- C08K 3/22: of metals
- C08K 2003/2296: {of zinc}
- C08L 33/02: Homopolymers or copolymers of acids; Metal or ammonium salts thereof
- C08L 67/00: Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain (of polyester-amides C08L77/12; of polyester-imides C08L79/08); Compositions of derivatives of such polymers
- C08L 67/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence)
- C08L 2201/10: Transparent films; Clear coatings; Transparent materials
- C08L 2201/14: Gas barrier composition
- C08L 2201/54: Aqueous solutions or dispersions
- C09D 7/66: {characterised by particle size}
- C09D 7/67: {Particle size smaller than 100 nm}
- C09D 7/68: {Particle size between 100-1000 nm}
- C09D 133/02: Homopolymers or copolymers of acids; Metal or ammonium salts thereof
- C09D 167/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds (C09D167/06 takes precedence)
- Y10T 428/1341: Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
- Y10T 428/1379: Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
- Y10T 428/1383: Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers [continuous layer]
- Y10T 428/31797: Next to addition polymer from unsaturated monomers
- Y10T 428/31909: Next to second addition polymer from unsaturated monomers
- Y10T 428/31928: Ester, halide or nitrile of addition polymer
- Y10T 428/31938: Polymer of monoethylenically unsaturated hydrocarbon
- 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)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A coating liquid includes: ultrafine zinc oxide particles; a polyester resin; an ammonium polycarboxylate salt; and water, in which an amount of the ammonium polycarboxylate salt is from 1 to 35 mass % with respect to that of the ultrafine zinc oxide particles.

## Claims

### Claim 1

A gas barrier laminate comprising:
a base material; and
a gas barrier layer formed on the base material and comprising a layer (A) formed from a coating liquid, and a layer (B) containing polycarboxylate polymers, each polymer of polycarboxylate polymers having two or more carboxyl groups, wherein
the coating liquid comprises ultrafine zinc oxide particles, a polyester resin, an ammonium polycarboxylate salt, and water,
an amount of the ultrafine zinc oxide particles is from 65 mass % to 90 mass % with respect to a solid content of the coating liquid,
an amount of the ammonium polycarboxylate salt is from 1 mass % to 5 mass % with respect to the ultrafine zinc oxide particles, and
the polyester resin has an acid value of 15 mg KOH/g or less, and
the layer (A) and the layer (B) are adjacent to each other in the gas barrier layer.

### Claim 2 (depends on 1)

The gas barrier laminate according to claim 1, further comprising:
another base material laminated on at least one of the base material and the gas barrier layer via an adhesive layer.

### Claim 3 (depends on 1)

The gas barrier laminate according to claim 1, wherein
a part of carboxyl groups of the polycarboxylate polymers of the layer (B) is a neutralized part of the carboxyl groups of the polycaboxylate polymers.

### Claim 4 (depends on 1)

The gas barrier laminate according to claim 1, wherein
a degree of neutralization of the carboxyl groups of the polycarboxylate polymers of the layer (B) is 30 mol % or less.

### Claim 5 (depends on 1)

The gas barrier laminate according to claim 1, wherein
a thickness of the layer (A) is 0.05 μm to 5 μm, and
a thickness of the layer (B) is 0.05 μm to 5 μm.

### Claim 6 (depends on 1)

The gas barrier laminate according to claim 1, wherein
a mass per unit area of the layer (A) is ⅓ or more times a mass per unit area of the layer (B) and 10 or less times a mass per unit area of the layer (B).