Binder matrix for gas generants and related compositions and methods

Abstract

A binder matrix suitable for use in a gas generant composition, a gas generant composition including the binder matrix, and a related method of igniting such a gas generant composition are provided. The binder matrix includes a non-energetic binder material and dimethyl malonate non-energetic plasticizer and has a softening temperature above at least about 125 DEG C. A gas generant composition including the binder matrix includes a non-energetic binder material such as cellulose acetate, dimethyl malonate non-energetic plasticizer, a fuel such as a nitramine fuel such as RDX, HMX or a combination thereof, and a stabilizer such as N-methyl-p-nitroaniline.

Description

Background of the invention

[0001] The present invention relates generally to an adhesive filler of a gas generating composition for inflating an inflatable device, such as an airbag in an inflatable restraint system used to protect an automobile occupant. In particular, the present invention relates to a binder filler comprising a non-energetic binder and a non-energetic plasticizer having a softening temperature of at least greater than about 125°C.

[0002] It is known to protect passengers by using air cushions or airbags, such as "airbags", which are inflated or inflated when a car suddenly decelerates, such as in a collision. Such airbag restraint systems generally include: one or more air cushions, packaged in the uninflated and folded condition to minimize space requirements; one or more crash sensors mounted on the frame or body to monitor If the car suddenly decelerates; an activation system triggered electronically by crash sensors; an inflator that generates or su...