Air bag gas generating composition

• US 5,898,126 A
• Filed: 11/24/1997
• Issued: 04/27/1999
• Est. Priority Date: 07/13/1992
• Status: Expired due to Fees

• Current Assignee: Daicel Chemical Industries Limited, Nippon Koki Co., Ltd. (NOF Corporation), Otsuka Kagaku Kabushiki Kaisha
• Original Assignee: Daicel Chemical Industries Limited, Nippon Koki Co., Ltd. (NOF Corporation), Otsuka Kagaku Kabushiki Kaisha
• Inventors: Yoshida, Tadao
• Primary Examiner(s): Nelson, Peter A.
• Application Number:
  US08/977,943
• Time in Patent Office: 519 Days
• Field of Search: 149/48, 149/35, 149/79, 149/83, 102/288, 102/289
• US Class Current: 149/46
• CPC Class Codes: C06D 5/06 by reaction of two or more solids

Abstract

The air bag gas generating composition of this invention comprises a nitrogen-containing organic compound and at least one oxidizing agent selected from the group consisting of oxo halogen acid salts and nitrates. The invention provides an air bag gas generating composition without a high shock sensitivity and with an available burning velocity and gas output characteristics and featuring a comparatively low combustion temperature.

Claims

1. An air bag gas generating composition comprising azodicarbonamide, about 20 to about 200 parts by weight of an oxo halogen acid salt, and about 5 to 350 parts by weight of a nitrate, relative to 100 parts by weight of the azodicarbonamide, and containing no sodium azide.

2. The gas generating composition of claim 1 wherein the oxo halogen acid salt is a halogenate and/or a perhalogenate.

3. The gas generating composition of claim 1 wherein the halogenate is an alkali metal halogenate.

4. The gas generating composition of claim 1 wherein the perhalogenate is an alkali metal perhalogenate.

5. The gas generating composition of claim 1 wherein the nitrate is at least one member selected from the group consisting of alkali metal nitrates, alkaline earth metal nitrates and ammonium nitrate.

6. The gas generating composition of claim 1, which contains about 30 to 180 parts by weight of the oxo halogen acid salt and about 30 to 150 parts by weight of the nitrate, relative to 100 parts by weight of the azodicarbonamide.

7. The gas generating composition of claim 1, wherein the oxo halogen acid salt is an alkali metal perchlorate or chlorate and the nitrate is an alkali metal or alkaline earth metal nitrate.

8. The gas generating composition of claim 1, which further contains at least one member selected from the group consisting of combustion control catalysts and antidetonation agents.

9. The gas generating composition of claim 8 wherein the combustion control catalyst is at least one member selected from the group consisting of the oxides, chlorides and carbonates of Period 3, Period 4 or Period 6 elements of the periodic table of the elements.

10. The gas generating composition of claim 8 wherein the combustion control catalyst is at least one member selected from the group consisting of cellulosic compounds and organic polymers.