Gas-generating mixture

US5542997A · kind A · utility

Assignee

• TEMIC Bayern-Chemie Airbag GmbH · DE

Inventors

• Siegfried Zeuner · Hersbruck, DE
• Joachim Sans · Putzbrunn, DE
• Uwe Dolling · Holzkirchen, DE
• Karl-Heinz Rodig · Waldkraiburg, DE

Key dates

• Filing date: May 19, 1994
• Grant date: Aug 6, 1996
• Expiry date: May 19, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C06D5/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A gas-generating mixture for an air bag, which has a rate of burnoff exceeding 40 mm/sec and good ignitability, but leads to a relatively low combustion temperature. The mixture is formed of an alkali or alkaline earth azide as the principal component, a metal oxide as the oxidizing agent and slag-forming agent, and 5 to 23 wt. % of an accelerator consisting of a metal nitrate and silicon dioxide, wherein the ratio of the metal nitrate to the silicon dioxide ranges from 4:1 to 1:4, and the silicon dioxide content is at least 4 wt. % of the mixture.