Propellant composition for automotive safety applications
Clean burning, non-self extinguishing propellant compositions for use in hybrid automotive air bag systems are disclosed. The propellant compositions are based on a mixture of a crystalline nitramine propellant, an energetic or non-energetic binder and one or a combination of an oxidizing propellant and an energetic plasticizer.
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Claims
2. The system of claim 1 wherein said binder component (c) is an inert binder selected from the group consisting of cellulose acetate, cellulose acetate butyrate, ethyl cellulose, an elastomeric polymer and mixtures thereof.
3. The system of claim 2 wherein said propellant composition contains from about 5 to 15% by weight of component (d).
4. The system of claim 3 wherein component (d) is trimethylolethane trinitrate.
5. The system of claim 3 wherein component (d) is glycidal azide.
6. The system of claim 2 wherein said propellant composition contains from about 70 to 80% by weight of component (a).
7. The system of claim 2 wherein said propellant composition contains from about 5 to about 35% by weight of component (b).
8. The system of claim 7 wherein component (b) is ammonium nitrate present at a level of from about 5 to about 15% by weight.
9. The system of claim 7 wherein component (b) is triaminoguanidinium nitrate present at a level of from about 20 to about 35% by weight.
10. The system of claim 2 wherein said binder is cellulose acetate.
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Type: Grant
Filed: Dec 11, 1996
Date of Patent: Sep 14, 1999
Assignee: Alliant Techsystems, Inc. (Hopkins, MN)
Inventor: Edward Hays Zeigler (Radford, VA)
Primary Examiner: Peter A. Nelson
Law Firm: Vidas, Arrett & Steinkraus
Application Number: 8/761,979
International Classification: C06B 3132;
