# US 11,305,910 B2 · Multilayer container comprising a polyethylene furanoate layer

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- Number: US 11,305,910 B2
- Document ID: US11305910B2
- Status: Granted
- Kind: B2
- Application number: 16/807,711
- Filed: 2020-03-03
- Published: 2020-09-10
- Granted: 2022-04-19
- Earliest claimed: 2019-03-05
- Assignees: Furanix Technologies B.V.
- Applicants: Synvina C.V.
- Inventors: Jesper Gabriël van Berkel; Jeffrey John Kolstad
- Web page: https://patentgrep.com/patent/US11305910B2

## CPC

- B32B 27/08: of synthetic resin
- B65D 1/0215: {multilayered (B65D81/3837 takes precedence)}
- B29C 49/0005: {characterised by the material}
- B29C 49/08: Biaxial stretching during blow-moulding
- B32B 1/00: Layered products having a non-planar shape
- B32B 27/18: characterised by the use of special additives
- B32B 27/36: comprising polyesters
- C08J 5/00: Manufacture of articles or shaped materials containing macromolecular substances (manufacture of semi-permeable membranes B01D67/00 - B01D71/00)
- B29C 2949/3036: having three or more components being injected
- B29K 2067/003: {PET, i.e. poylethylene terephthalate}
- B29L 2031/7158: {Bottles}
- B32B 2250/02: 2 layers
- B32B 2250/03: 3 layers
- B32B 2250/24: All layers being polymeric
- B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
- B32B 2264/00: Composition or properties of particles which form a particulate layer or are present as additives
- B32B 2307/406: Bright, glossy, shiny surface
- B32B 2307/704: Crystalline
- B32B 2307/724: Permeability to gases, adsorption
- B32B 2307/732: Dimensional properties
- B32B 2439/60: Bottles
- C08J 2367/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds; (C08J2367/06 takes precedence)
- 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
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A container includes an outer layer defining an exterior surface and including poly (ethylene terephthalate) and an inner barrier layer including semi-crystalline poly(ethylene furanoate) including semi-crystalline poly(ethylene furanoate) where the poly(ethylene furanoate) has a crystallinity Xc of 3 to 40%.

## Claims

### Claim 1

A container comprising an outer layer defining an exterior surface and comprising poly(ethylene terephthalate) and an inner barrier layer comprising semi-crystalline poly(ethylene furanoate) wherein the poly(ethylene furanoate) has a crystallinity Xc of 15 to 40%.

### Claim 2 (depends on 1)

The container according to claim 1, wherein the inner barrier layer comprising poly(ethylene furanoate) has an intrinsic viscosity which is higher than the intrinsic viscosity of at least the outer layer.

### Claim 3 (depends on 1)

The container according to claim 1, wherein a layer thickness of the inner barrier layer is in a range of 0.005 mm to 0.1 mm.

### Claim 4 (depends on 1)

The container according to claim 1, wherein the poly(ethylene furanoate) has a content of diethylene glycol of at most 2 wt %, based on the poly(ethylene furanoate).

### Claim 5 (depends on 1)

The container according to claim 1 comprising an additional inner layer defining an interior surface and comprising poly(ethylene terephthalate), wherein the inner barrier layer is arranged between the outer layer and the additional inner layer.

### Claim 6 (depends on 1)

The container according claim 1, wherein the container is a bottle.

### Claim 7 (depends on 1)

The container according to claim 1, wherein the inner barrier layer comprising poly(ethylene furanoate) has an intrinsic viscosity which is at least 0.03 dL/g higher than the intrinsic viscosity of at least the outer layer.

### Claim 8 (depends on 7)

The container according to claim 7, wherein the inner barrier layer comprising poly(ethylene furanoate) has an intrinsic viscosity which is at least 0.05 dL/g higher than the intrinsic viscosity of at least the outer layer.

### Claim 9 (depends on 8)

The container according to claim 8, wherein the inner barrier layer comprising poly(ethylene furanoate) has an intrinsic viscosity which is at least 0.07 dL/g higher than the intrinsic viscosity of at least the outer layer.