# US 9,518,148 B2 · Oxygen-absorbing resin composition

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- Number: US 9,518,148 B2
- Document ID: US9518148B2
- Status: Granted
- Kind: B2
- Application number: 14/433,482
- Filed: 2013-10-09
- Published: 2015-09-17
- Granted: 2016-12-13
- Earliest claimed: 2012-10-10
- Assignees: Mitsubishi Gas Chemical Company, Inc.
- Applicants: Mitsubishi Gas Chemical Company, Inc.
- Inventors: Shinpei Iwamoto; Satoshi Okada; Shinichi Ikeda; Kenichiro Usuda
- Web page: https://patentgrep.com/patent/US9518148B2

## CPC

- C08G 63/00: Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule (polyester-amides C08G69/44; polyester-imides C08G73/16)
- B65D 81/266: {for absorbing gases, e.g. oxygen absorbers or desiccants (B65D51/244, B65D51/30 take precedence)}
- C08G 63/181: Acids containing aromatic rings
- C08G 63/54: the acids or hydroxy compounds containing carbocyclic rings
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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

An oxygen-absorbing resin composition comprising a polyester compound having a constitutional unit (a), which has at least one tetralin ring selected from the group consisting of the following general formulas (1) to (4) and a constitutional unit (b) comprising residue of tetrahydrophthalic anhydride derivative which is represented by the following general formula (5) and/or general formula (6).

## Claims

### Claim 1

An oxygen-absorbing resin composition comprising a polyester compound having a constitutional unit (a), which has at least one tetralin ring, selected from the group consisting of the following general formulas (1) to (4):
wherein each R independently represents a monovalent substituent, the monovalent substituent being at least one selected from the group consisting of a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxy group, a carboxyl group, an ester group, an amido group, a nitro group, an alkoxy group, an aryloxy group, an acyl group, an amino group, a thiol group, an alkylthio group, an arylthio group, a heterocyclic thio group and an imido group, optionally further having a substituent; wherein at least one hydrogen atom is bound to a benzyl position of the tetralin ring; wherein X represents a divalent group comprising at least one group selected from the group consisting of an aromatic hydrocarbon group, a saturated or unsaturated alicyclic hydrocarbon group and a linear or branched and saturated or unsaturated aliphatic hydrocarbon group and a heterocyclic group; wherein each m independently represents an integer of 0 to 3 and each n independently represents an integer of 0 to 6 and a constitutional unit (b), comprising residue of tetrahydrophthalic anhydride derivative which is represented by the following general formula (5) and/or general formula (6),
wherein each R independently represents a monovalent substituent, the monovalent substituent being at least one selected from the group consisting of a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxy group, a carboxyl group, an ester group, an amido group, a nitro group, an alkoxy group, an aryloxy group, an acyl group, an amino group, a thiol group, an alkylthio group, an arylthio group, a heterocyclic thio group and an imido group, optionally further having a substituent; wherein each p independently-represents an integer of 1 to 5.

### Claim 2 (depends on 1)

The oxygen-absorbing resin composition according to claim 1, wherein the polyester compound contains the constitutional unit (a) represented by the general formula (1) and the constitutional unit (b) in a molar ratio of 99:1 to 50:50.

### Claim 3 (depends on 1)

The oxygen-absorbing resin composition according to claim 1, wherein the constitutional unit (a) is at least one selected from the group consisting of the following formula (7), formula (8) and formula (9)

### Claim 4 (depends on 1)

The oxygen-absorbing resin composition according to claim 1, wherein the constitutional unit (b) is at least the following formula (10) and/or formula (11),
a total amount of formula (10) and formula (11) in the constitutional unit (b) is 50 mol % or more.