Guanidine-thermite igniter composition for use in gas generators

US6599380B2 · kind B2 · utility

Assignee

• TRW Airbag Systems GmbH & Co. KG · DE

Inventors

• Siegfried Zeuner · Hersbruck, DE
• Achim Hofmann · Polling, DE
• Roland Schropp · Tegernheim, DE
• Karl-Heinz Rodig · Waldkraiburg, DE

Key dates

• Filing date: Jun 6, 2001
• Grant date: Jul 29, 2003
• Expiry date: Jan 12, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C06C9/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to an igniter composition for use in a gas generator for a safety means in vehicles. The igniter composition consists of a gas-generating composition in an amount of 15 to 70 wt-% and of a thermite composition in an amount of 30 to 85 wt-%. The gas-generating composition consists essentially of a guanidine compound as fuel and an inorganic oxidizer. The thermite composition consisting essentially of a metal and a metal oxide. The igniter composition or the gas-generating composition and the thermite composition, each for itself, have an oxygen balance of between 0 and −20%.