Gas generating compositions

• US 3,902,934 A
• Filed: 08/22/1973
• Issued: 09/02/1975
• Est. Priority Date: 06/08/1972
• Status: Expired due to Term

• Current Assignee: HBB Limited Partnership
• Original Assignee: Hubert G. Timmerman
• Inventors: Timmerman, Hubert G.
• Primary Examiner(s): Padgett, Benjamin R.
• Assistant Examiner(s): Gluck, Irwin
• Application Number:
  US05/390,434
• Time in Patent Office: 741 Days
• Field of Search: 149/83,77,113,115 252/187R,188.3R 280/15AB 102/39 60/205,217 23/281
• US Class Current: 149/83
• CPC Class Codes: B60R 2021/2648 comprising a plurality of combustion chambers or sub-chambers
• CPC Class Codes: B60R 21/2644 using only solid reacting substances, e.g. pellets, powder
• CPC Class Codes: C06B 29/04 with an inorganic non-explosive or an inorganic non-thermic component
• CPC Class Codes: C06D 5/06 by reaction of two or more solids
• CPC Class Codes: Y10S 149/113 Inorganic oxygen-halogen salt
• CPC Class Codes: Y10S 149/115 Organic fuel

Abstract

A deflagration composition yielding a gas comprising principally carbon dioxide and water vapor comprises a substantially homogeneous mixture of citric acid powder in the range of from about 25 to 37 percent by weight and an oxidizer powder selected from the group consisting of potassium chlorate, potassium perchlorate, sodium chlorate, and sodium perchlorate. This composition may be used adjacent a coolant powder comprising up to about 40 percent by weight of potassium chlorate and an endothermic decomposition coolant having a thermal decomposition product selected from the class consisting of carbon dioxide and water.

Claims

1. A NON TOXIC GAS GENERATING COMPRISING AN ORGANIC ACID POWDER HAVING AN AVERAGE PARTICLE SIZE LESS THAN ABOUT 15 MICRONS AND SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID IN THE RANGE OF FROM ABOUT 25 TO 37 PERCENT BY WEIGHT, TATTARIC ACID IN THE RANGE OF FROM ABOUT PERCENT BY WEIGHT, TARTRONIC ACID IN THE RANGE OF FROM ABOUT 25 TO 49.5 PERCENT BY WEIGHT AND MALONIC ACID IN THE RANGE OF FROM ABOUT 200 TO 36.7 PERCENT BY WEIGHT, AND A BALANCE OF AN OXIDIZER POWDER HAVING AN AVERAGE PARTICLE SIZE LESS THAN ABOUT 25 MICRONS AND SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CHLORATE, POTASSIUM PERCHLORATE, SODIUM CHLORATE, AND SODIUM PERCHLORATE.

2. A composition as defined in claim 1 further comprising an endothermic decomposition powder that decomposes to pRoduce a gaseous decomposition product selected from the class consisting of carbon dioxide, oxygen and water vapor.

3. A composition as defined in claim 1 wherein the organic acid powder comprises citric acid.

4. A non toxic gas generating composition comprising:

from about 25 to 37 percent by weight of citric acid powder having an average particle size less than about 15 microns; and

from about 63 to 75 percent by weight of an oxidizer powder having an average particle size less than about 25 microns and selected from the group consisting of potassium chlorate, potassium perchlorate, sodium chlorate, and sodium perchlorate.

5. A composition as defined in claim 4 wherein the oxidizer is potassium chlorate.

6. A composition as defined in claim 5 wherein the citric acid is present as about 32 percent by weight and the potassium chlorate is present as about 68 percent by weight.