Multi-ingredient gas generators

• US 4,376,002 A
• Filed: 04/21/1981
• Issued: 03/08/1983
• Est. Priority Date: 06/20/1980
• Status: Expired due to Term

• Current Assignee: Orica Explosives Technology Pty Limited (Orica Limited)
• Original Assignee: CIL Inc. (Nouryon BV)
• Inventors: Utracki, Lechoslaw A. M.
• Primary Examiner(s): Lechert, Jr., Stephen J.
• Application Number:
  US06/255,993
• Time in Patent Office: 686 Days
• Field of Search: 149/35, 149/40
• US Class Current: 149/35
• CPC Class Codes: C06B 35/00 Compositions containing a metal azide
• CPC Class Codes: C06D 5/06 by reaction of two or more solids

Abstract

An improved nitrogen gas generating pyrotechnic composition is provided which consist of a stoichiometric mixture of an alkali metal azide or alkaline earth metal axide fuel and an oxidant consisting of a mixture of at least two metal oxides selected from the oxides of iron, silicon, manganese, tantalum, niobium and tin. The mixed metal oxides provide a synergistic effect and result in a composition having improved ignition delay time, burn rate and gas pressure as well as a reduction in toxic by-products and dust.

Claims

1. A solid nitrogen gas generating composition comprising a substantially stoichiometric admixture of (a) a fuel selected from the group consisting of alkali metal azides and alkaline earth metal azides, (b) a synergistically acting primary oxident component consisting of a mixture of at least two metal oxides selected from the group consisting of the oxides of iron, silicon, manganese, tantalum, niobium and tin, and (c) a residue control agent comprising a secondary metal oxide selected from the group consisting of the oxides of titanium, aluminium and zinc or mixtures of these.