PRIMING POWDER FOR GAS-GENERATION APPARATUS FOR EXPANDING AIR BAG

• Main Authors: KOBARI KOICHI, SHIKASUMI TAKASHI
• Format: Patent
• Language: English
• Published: 29.03.1991
• Subjects: CHEMISTRY; EXPLOSIVES; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART); MATCHES; MEANS FOR GENERATING SMOKE OR MIST; METALLURGY; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

PURPOSE:To impart an auto-ignition function in high-temperature environment and an ignition function of a gas-generating agent by coagulating an ignition- temperature controlling agent having a specific ignition temperature and Mg with a binder composed of ethylene tetrafluoride and ethylene trifluoride. CONSTITUTION:The objective priming powder is produced by coagulating (A) an ignition temperature controlling agent and (B) Mg with (C) a binder composed of ethylene tetrafluoride and ethylene trifluoride. The controlling agent A is a priming powder for a gas generator for the expansion of an air bag and placed at the center of a gas-generating agent in a container and is composed of one or more compounds selected from the azides of alkaline-earth metals consisting of Ca, Sr and Ba. The ignition temperature of the controlling agent is lower than the ignition temperature of the gas-generating agent or the temperature to cause remarkable lowering of the burst strength of the container and higher than the possible maximum temperature occurring in a car under normal condition.