Gas generating mixture

• US 5,677,510 A
• Filed: 11/24/1995
• Issued: 10/14/1997
• Est. Priority Date: 11/26/1994
• Status: Expired due to Fees

• Current Assignee: Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forsching E.V.
• Original Assignee: Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forsching E.V.
• Inventors: Schmid, Helmut, Engel, Walter, Eisenreich, Norbert, Bucerius, Klaus Martin
• Primary Examiner(s): Miller, Edward A.
• Application Number:
  US08/562,606
• Time in Patent Office: 690 Days
• Field of Search: 149/45, 149/37, 149/38, 149/36
• US Class Current: 149/45
• CPC Class Codes: C06B 31/00 Compositions containing an inorganic nitrogen-oxygen salt
• CPC Class Codes: C06D 5/06 by reaction of two or more solids

Abstract

A gas generating mixture comprises a high nitrogen and low carbon fuel fromhe group nitroguanidine (NIGU), tiraminoguanidine nitrate (TAGN), diguanidinium-5,5'"'"'-azotetrazolate (GZT) or 3-nitro-l,2,3-triazol-5-one (NTO), as well as copper diammine dinitrate Cu(NH₃)₂ (NO₃)₂ as the oxidizer and a pyrophoric metal or such a metal alloy on a carrier catalyst.

Claims

1. Gas generating mixture comprising a high nitrogen and low carbon fuel selected from the group consisting of nitroguanidine (NIGU), triaminoguanidine nitrate (TAGN), diguanidinium-5,5'"'"'-azotetrazolate (GZT) and 3-nitro-1,2,3-triazole-5-one (NTO), catalysts, oxidizer and optionally coolants, wherein the oxidizer is copper diammine dinitrate Cu(NH₃)₂ (NO₃)₂ and the catalyst comprises a pyrophoric metal or an alloy of the pyrophoric metal on a carrier.

2. Mixture according to claim 1, wherein a silicate, is used as a carrier for the catalyst.

3. Mixture according to claim 2, wherein the catalyst comprises pyrophoric Ag on a schist or framework silicate carrier.

4. Mixture according to claim 1, whrein the catalyst has an average particle size of 25 um.

5. Mixture according to claim 1, wherein the mixture comprises GZT and Cu(NH₃)₂ (NO₃)₂ with an equilibrated oxygen balance and up to 30 wt. % of the catalyst.

6. Mixture according to claim 5 wherein the GZT and Cu(NH₃)₂ (NO₃)₂ are in a ratio of 21.6:

78.4 wt. %.

7. Mixture according to claim 1, wherein the coolant comprises Fe₂ O₃.

8. A mixture according to claim 1, wherein a schist or framework silicate is used as a carrier for the catalyst.