Patent · US Expired

Fumaric acid-based gas generating compositions for airbags

US5525170A · kind A · utility

7Cited by

7References

4Claims

0Family size

Assignee

TEMIC Bayern-Chemie Airbag GmbH · DE

Inventors

Armin Stark · Dahme/Mark, DE
Siegfried Zeuner · Hersbruck, DE
Karl-Heinz Rodig · Waldkraiburg, DE

Key dates

Filing date	May 26, 1995
Grant date	Jun 11, 1996
Priority date	—
Expiry date	May 26, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC06D5/06
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The subject invention concerns a propellant mixture for producing propellant gas for passenger protection systems in motor vehicles, in particular airbag systems. According to this invention, this propellant mixture comprises fumaric acid, with a share of 20 to 45% by weight, as well as an inorganic oxidant with a share of 55 to 80% by weight. These revealed propellant components are non-toxic and characterized by a high thermal stability as well as low hygroscopicity. In addition, this propellant contains only minor traces of pollutant gases, with even combustion residues being non-toxic.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.