# US 2013/0153827 A1 · Oxygen scavenger composition, and oxygen scavenger package using the same, and method for oxygen scavenging

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- Number: US 2013/0153827 A1
- Document ID: US20130153827A1
- Status: Published application
- Kind: A1
- Application number: 13/820,593
- Filed: 2012-06-08
- Published: 2013-06-20
- Earliest claimed: 2011-06-09
- Assignees: Mitsubishi Gas Chemical Company, Inc.
- Inventors: Takashi Nakata
- Web page: https://patentgrep.com/patent/US20130153827A1

## CPC

- C09K 15/02: containing inorganic compounds
- A23B 2/717: Oxygen absorbent
- B01J 20/045: {containing sulfur, e.g. sulfates, thiosulfates, gypsum}
- B01J 20/046: {containing halogens, e.g. halides}
- B01J 20/2805: {Sorbents inside a permeable or porous casing, e.g. inside a container, bag or membrane}
- B01J 20/28052: {Several layers of identical or different sorbents stacked in a housing, e.g. in a column}
- B01J 20/3204: {Inorganic carriers, supports or substrates}
- B01J 20/3236: {containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts}
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- A23B: PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

There are provided an oxygen scavenger composition and the like, which are excellent in economy in which the amount of oxygen absorbed per unit volume of the oxygen scavenger composition is large, and rusting at high humidity is inhibited. The oxygen scavenger composition of the present invention comprises (A) an iron powder, (B) a metal bromide and/or a metal iodide, and (C) a thiosulfate.

## Claims

### Claim 1

An oxygen scavenger composition comprising (A) an iron powder, (B) a metal bromide and/or a metal iodide, and (C) a thiosulfate.

### Claim 2 (depends on 1)

The oxygen scavenger composition according to claim 1,
wherein at least part of a surface of the (A) is coated with the (B) and the (C).

### Claim 3 (depends on 1)

The oxygen scavenger composition according to claim 1,
wherein a content of the (B) is 0.01 to 5 parts by weight based on 100 parts by weight of the (A).

### Claim 4 (depends on 1)

The oxygen scavenger composition according to claim 1,
wherein a molar ratio of the (C) to the (B) is (C)/(B)=0.2 to 5.

### Claim 5 (depends on 1)

The oxygen scavenger composition according to claim 1,
wherein a metal of the (B) is an alkali metal or an alkaline-earth metal.

### Claim 6 (depends on 1)

The oxygen scavenger composition according to claim 1,
wherein (C) the thiosulfate is an alkali metal salt or alkaline-earth metal salt of thiosulfuric acid.

### Claim 7 (depends on 1)

The oxygen scavenger composition according to claim 1,
wherein the oxygen scavenger composition is a moisture-dependent oxygen scavenger composition.

### Claim 8 (depends on 1)

An oxygen scavenger package obtained by packaging the oxygen scavenger composition according to claim 1 in an air-permeable packaging material.

### Claim 9 (depends on 8)

A method for oxygen scavenging an inside of a gas barrier container at a high humidity of 70 to 100% RH using the oxygen scavenger package according to claim 8.