Thermally stable gas generating composition
AssigneePrimex Technologies, Inc.
InventorsGary F. Holland, Donald R. Poole, Nicholas A. Wolf, Michael A. Wilson
Life of this patent
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Abstract
There is provided a gas generating composition consisting essentially of a mixture of nitroguanidine, phase stabilized ammonium nitrate and an elastomeric binder. When the ammonium nitrate is phase stabilized with from about 7% to about 20%, by weight, of a potassium salt, the mixture is structurally and volumetrically stable over typical automotive operating temperatures and has a melting temperature in excess of 100.degree. C. The mixture generates large volumes of nitrogen and carbon dioxide when ignited with minimal generation of solids or toxic gases and is particularly useful as an inflating medium for automobile airbags.
Claims16
A gas generating composition consisting essentially of:
- from about 5% to about 40%, by weight, of nitroguanidine;
- from an amount effective to increase the elasticity of said composition up to about 10%, by weight, of an elastomeric binder;
- and
- from about 60% to about 85%, by weight, of phase stabilized ammonium nitrate, said gas generating composition having a melting point in excess of 100.degree. C. and capable of deflagration when ignited.
A gas generating composition consisting essentially of:
- from about 5% to about 40%, by weight, of nitroguanidine;
- from an amount effective to increase the flexibility of said composition up to about 10%, by weight, of an elastomeric binder selected from the group consisting of polyurethanes, polycarbonates, polyethers, polysuccinates, thermoplastic rubbers and mixtures thereof;
- from about 60% to about 85%, by weight, of phase stabilized ammonium nitrate, said gas generating composition having a melting point in excess of 100.degree. C. and capable of deflagration when ignited;
- and
- from about 0.25% to about 3%, by weight, of a plasticizer.
Dependencies are inferred from the claim text.