Gas generating propellant
First Claim
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1. A gas generating propellant used to deploy an air bag, consisting essentially of:
- from about 55% to about 75%, by weight, guanidine nitrate;
from about 25% to about 45%, by weight, of an oxidizer selected from the group consisting of potassium perchlorate and ammonium perchlorate;
from about 0.5% to about 5.0%, by weight, of a flow enhancer; and
up to about 5%, by weight, of a binder.
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Abstract
There is provided a gas generating propellant mix consisting essentially of guanidine nitrate, an oxidizer selected from the group consisting of potassium perchlorate and ammonium perchlorate, a flow enhancer and a binder. When ignited, the propellant mix generates nitrogen, carbon dioxide and steam at an elevated temperature, typically in excess of 800° C. The propellant mix is particularly useful in augmented gas generators to augment the evolution of oxygen from a secondary source such as potassium chlorate. The propellant mix is free of highly toxic compounds and has particular application in automotive airbags.
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Citations
16 Claims
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1. A gas generating propellant used to deploy an air bag, consisting essentially of:
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from about 55% to about 75%, by weight, guanidine nitrate; from about 25% to about 45%, by weight, of an oxidizer selected from the group consisting of potassium perchlorate and ammonium perchlorate; from about 0.5% to about 5.0%, by weight, of a flow enhancer; and up to about 5%, by weight, of a binder. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A component of an airbag, comprising:
a primary gas generating propellant mix consisting essentially of from about 55% to about 75%, by weight, guanidine nitrate, from about 25% to about 45%, by weight, of an oxidizer selected from the group consisting of potassium perchlorate and ammonium perchlorate, from about 0.5% to about 5.0%, by weight, of a flow enhancer and up to about 5%, by weight, of a binder that is effective to deliver a mixture of nitrogen, carbon dioxide and steam to a secondary gas source, said mixture being delivered at a temperature in excess of about 800°
C.- View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
Specification