Gas generator composition and process for manufacturing the same

• US 5,470,406 A
• Filed: 04/07/1993
• Issued: 11/28/1995
• Est. Priority Date: 04/10/1992
• Status: Expired due to Fees

• Current Assignee: NOF Corporation
• Original Assignee: NOF Corporation
• Inventors: Narita, Kazuyuki, Matsuda, Kazunori, Ochi, Koji, Asano, Nobukazu
• Primary Examiner(s): Nelson, Peter A.
• Application Number:
  US08/044,281
• Time in Patent Office: 965 Days
• Field of Search: 149/35, 102/289, 102/290, 102/288
• US Class Current: 149/35
• CPC Class Codes: C06B 35/00 Compositions containing a metal azide
• CPC Class Codes: C06D 5/06 by reaction of two or more solids

Abstract

The gas generator composition contains sodium azide and an oxidizing agent as major components. This gas generator composition additionally contains 2 to 8% by weight of magnesium aluminate. To produce this composition, sodium azide and the oxidizing agent are admixed to a colloidal silica having a silica concentration of 3 to 15% by weight to form a slurry, followed by granulation and drying of the slurry.

Claims

1. A gas generator composition comprising sodium azide and an oxidizing agent as major components, and 2 to 8% by weight of magnesium aluminate.

2. The gas generator composition according to claim 1, wherein said magnesium aluminate has a specific surface area of 100 to 250 m² /g.

3. The gas generator composition according to claim 1, wherein said oxidizing agent is manganese dioxide.

4. The gas generator composition according to claim 1, wherein said oxidizing agent is manganese dioxide baked at 250°

to 500°

C.

5. A gas generator composition comprising sodium azide and an oxidizing agent as major components, 2 to 8% by weight of magnesium aluminate and 4 to 10% by weight of silica derived from colloidal silica.

6. The gas generator composition according to claim 5, wherein said magnesium aluminate has a specific surface area of 100 to 250 m² /g.

7. The gas generator composition according to claim 5, wherein the total amount of said magnesium aluminate and said silica derived from colloidal silica is 6 to 12% by weight.

8. The gas generator composition according to claim 5, wherein the ratio of said magnesium aluminate to said silica derived from colloidal silica is 1:

1 to 1;

3 in terms of weight ratio.

9. The gas generator composition according to claim 5, wherein said oxidizing agent is manganese dioxide.

10. The gas generator composition according to claim 5, wherein said oxidizing agent is manganese dioxide baked at 250°

to 500°

C.