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Methods of preparing gas generant formulations

  • US 5,531,845 A
  • Filed: 01/10/1994
  • Issued: 07/02/1996
  • Est. Priority Date: 01/10/1994
  • Status: Expired due to Fees
First Claim
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1. A method for preparing gas generant feed stock, comprising the steps of:

  • obtaining a desired quantity of ingredients measured in predetermined ratios according to the composition of a gas generating material;

    mixing together the ingredients of the gas generating material in a carrier solvent wherein at least one of the ingredients of the gas generating material becomes dissolved in the solvent;

    freezing the carrier solvent;

    applying sufficient quantities of heat while controlling the pressure to cause sublimation of the frozen solvent, thereby inducing the ingredients to fall out of solution;

    including a binding agent in the mixture in sufficient quantities that the ingredients of the gas generating material will agglomerate to form non-curable, agglomerated granules as the ingredients are mixed; and

    compacting the agglomerated granules to form a predetermined shape.

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