Oxygen absorbent composition

• US 4,199,472 A
• Filed: 07/15/1977
• Issued: 04/22/1980
• Est. Priority Date: 07/15/1976
• Status: Expired due to Term

• Current Assignee: Mitsubishi Gas Chemical Company Incorporated (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Gas Chemical Company Incorporated (Mitsubishi Electric Corporation)
• Inventors: Yamaguchi, Takaaki, Ohtsuka, Sadao
• Primary Examiner(s): Gantz, Delbert E.
• Assistant Examiner(s): Wright, William G.
• Application Number:
  US05/816,135
• Time in Patent Office: 1,012 Days
• Field of Search: 252/427, 252/428, 252/188, 252/439, 423/515, 423/221
• US Class Current: 502/404
• CPC Class Codes: A23L 3/3436 Oxygen absorbent
• CPC Class Codes: A23L 3/358 Inorganic compounds
• CPC Class Codes: C09K 15/12 containing sulfur and oxygen
• CPC Class Codes: C09K 15/326 containing only metals

Abstract

An oxygen absorbent composition consisting essentially of (a) an oxygen absorbent comprising a dithonite as a main component and (b) a fiber material in an amount of from about 1 to about 50 parts by weight per 100 parts by weight of the oxygen absorbent and a process for producing the same are disclosed.

Claims

1. An oxygen absorbent composition consisting essentially of (a) an oxygen absorbent comprising sodium dithionite as a main component and (b) at least one fiber material in an amount of from about 1 part to about 50 parts by weight per 100 parts by weight of the oxygen absorbent.

2. The oxygen absorbent composition as defined in claim 1 wherein the amount of the fiber material employed is in the range of from about 1 part to about 10 parts by weight per 100 parts by weight of the oxygen absorbent.

3. The oxygen absorbent composition as defined in claim 1 wherein the amount of the fiber material employed is in the range of from about 3 parts to about 5 parts by weight per 100 parts by weight of the oxygen absorbent.

4. The oxygen absorbent composition as defined in claim 1 wherein the fiber material is powdery pulp.

5. The oxygen absorbent composition as defined in claim 1 wherein the fiber material is powdery cellulose.

6. The oxygen absorbent composition as defined in claim 1 wherein the oxygen absorbent comprising sodium dithionite as a main component contains an anhydrous dithionite and water.

7. The oxygen absorbent composition as defined in claim 1 wherein the oxygen absorbent comprising sodium dithionite as a main component contains an anhydrous dithionite, water and at least one material selected from the group consisting of an alkaline material and activated carbon.

8. The oxygen absorbent composition as defined in claim 1 wherein the oxygen absorbent comprising sodium dithionite as a main component contains an anhydrous dithionite and an alcohol.

9. The oxygen absorbent composition as defined in claim 1 wherein the oxygen absorbent comprising sodium dithionite as a main component contains an anhydrous dithionite, an alcohol and at least one material selected from the group consisting of an alkaline material and activated carbon.

10. The oxygen absorbent composition as defined in claim 4 wherein more than 90% of the powdery pulp passes through 50 mesh and less than 60% of the pulp passes through 250 mesh.

11. The oxygen absorbent composition as defined in claim 5 wherein the powdery cellulose contains the amorphous portion.

12. The oxygen absorbent composition as defined in claim 5 wherein more than 90% of the cellulose passes through 50 mesh and less than 60% of the pulp passes through 250 mesh.

13. The oxygen absorbent composition as defined in claim 6 wherein the water is water of crystallization.

14. The oxygen absorbent composition as defined in claim 7 wherein the water is water of crystallization.

15. The oxygen absorbent composition as defined in claim 7 wherein the alkaline material is calcium hydroxide.

16. The oxygen absorbent composition as defined in claim 8 wherein the alcohol is selected from the group consisting of alkylene glycols, glycerine and its alkyl derivatives, and has at least one hydroxy group.

17. The oxygen absorbent composition as defined in claim 8 wherein the alcohol is ethylene glycol.

18. The oxygen absorbent composition as defined in claim 9 wherein the alcohol is selected from the group consisting of alkylene glycols, glycerine and its alkyl derivatives, and has at least one hydroxy group.

19. The oxygen absorbent composition as defined in claim 9 wherein the alcohol is ethylene glycol.

20. The oxygen absorbent composition as defined in claim 9 wherein the alkaline material is calcium hydroxide.