Back to results
US 2007/0181236 A1Published application
Gas-generating pyrotechnical compositions and pyrotechnical compounds for automotive safety
AssigneeSNPE Materiaux Energetiques
InventorsGeorges Chounet, Eric Giraud, Bernard Thibieroz
Life of this patent
Estimating the term…
Abstract
The present invention provides a pyrotechnic gas generating composition and pyrotechnic compounds able to be obtained from said composition. Said composition comprises basic copper nitrate, guanidine nitrate, a specific additional reducing charge, and/or a specific additional oxidizing charge as well as a specific binder.
Claims14
A pyrotechnic gas-generating composition comprising an oxidizing charge constituted by basic copper nitrate (BCN), a reducing charge constituted by guanidine nitrate (GN) and a binder, the composition being characterized in that it also comprises:
- an additional reducing charge selected from the group formed by hexogene (RDX), octogene (HMX), penthrite (PETN), triaminoguanidine nitrate (TAGN), nitroguanidine, 3-nitro-1,2,4-triazol-5-one (ONTA) and mono- and bi-tetrazoles;
- and/or, advantageously and
- an additional oxidizing charge which forms a solid solution obtained by substitution with guanidine nitrate (GN);
- and
- in that the binder, which is hydrosoluble, is based on a mixture of at least one carboxymethylcellulose with a high molecular mass and at least one carboxymethylcellulose with a low molecular mass, in a mass ratio in the range 95/5 to 60/40.
2 more elements
Dependencies are inferred from the claim text.