Gas generants containing silicone fuels

• US 7,094,296 B1
• Filed: 09/18/2000
• Issued: 08/22/2006
• Est. Priority Date: 09/16/1999
• Status: Expired due to Fees

• Current Assignee: Joyson Safety Systems Acquisition, LLC (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Automotive Systems Laboratory, Incorporated (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Williams, Graylon K., Burns, Sean P.
• Primary Examiner(s): MITCHELL, KATHERINE W
• Application Number:
  US09/664,130
• Time in Patent Office: 2,164 Days
• Field of Search: 149/19.2, 280/741
• US Class Current: 149/19.2
• CPC Class Codes: C06B 23/04 for cooling the explosion gases including antifouling and flash suppressing agents
• CPC Class Codes: C06B 33/06 the material being an inorganic oxygen-halogen salt
• CPC Class Codes: C06D 5/06 by reaction of two or more solids

Abstract

Gas generating compositions are provided containing silicone, a metal or nonmetal perchlorate oxidizer, and a coolant selected from the group including metal carbonates, metal bicarbonates, metal oxalates, and metal hydroxides. These compositions exhibit rapid and sustained burn rates at ambient pressure while maintaining acceptable combustion temperatures.

Claims

1. A gas generant composition consisting essentially of:

silicone as a fuel at about 10–

25% by weight;

an oxidizer selected from the group consisting of metal and nonmetal perchlorates at about 30–

85% by weight; and

a coolant selected from the group consisting of alkali, alkaline earth, and transitional metal carbonates, bicarbonates, oxalates, and hydroxides at about 1–

30% by weight, said percentages stated by weight of the gas generant composition.

2. The gas generant composition of claim 1 wherein said oxidizer is selected from the group consisting of potassium perchlorate, ammonium perchlorate, and lithium perchlorate.

3. The gas generant composition of claim 1 wherein said composition consists essentially of:

silicone as said fuel;

potassium perchlorate as said oxidizer; and

strontium carbonate as said coolant.

4. The gas generant composition of claim 1 wherein said composition consists essentially of:

silicone as said fuel;

potassium perchlorate as said oxidizer; and

strontium oxalate as said coolant.

5. The gas generant composition of claim 1 wherein said composition consists essentially of:

silicone as said fuel;

potassium perchlorate as said oxidizer; and

calcium oxalate as said coolant.

6. The gas generant composition of claim 1 wherein said composition consists essentially of:

silicone as said fuel;

potassium perchlorate as said oxidizer; and

calcium carbonate as said coolant.

7. The gas generant composition of claim 1 wherein said composition consists essentially of:

silicone as said fuel;

potassium perchlorate as said oxidizer; and

magnesium hydroxide as said coolant.

8. The gas generant composition of claim 1 wherein said composition consists essentially of:

silicone as said fuel;

potassium perchlorate as said oxidizer; and

magnesium carbonate as said coolant.

9. The gas generant composition of claim 1 wherein said composition consists essentially of:

silicone as said fuel;

lithium perchlorate as said oxidizer; and

a coolant selected from the group consisting of strontium carbonate, calcium carbonate, strontium oxalate, magnesium carbonate, magnesium hydroxide, and potassium carbonate.

10. A gas generant composition consisting essentially of:

silicone as a fuel at 20–

25%;

a primary oxidizer selected from the group consisting of metal and nonmetal perchlorates at 30–

60%; and

a coolant selected from the group consisting of alkali, alkaline earth, and transitional metal carbonates, oxalates, bicarbonates, and hydroxides at 20–

30%, said percentages stated by weight of said gas generant composition.

11. A gas generant composition consisting essentially of:

silicone as a fuel at 10–

25%;

potassium perchlorate as a primary oxidizer at 30–

85%; and

a coolant selected from the group consisting of alkali metal, alkaline earth metal, and transitional metal carbonates, oxalates, and hydroxides at 1–

30%, said percentages stated by weight of said gas generant composition.

12. The gas generant composition of claim 11 consisting essentially of:

silicone as said fuel at 10–

25%;

potassium perchlorate as said oxidizer at 30–

85%; and

strontium carbonate as said coolant at 1–

30%, said percentages stated by weight of said gas generant composition.

13. The gas generant composition of claim 12 comprising:

silicone as said fuel at 20%;

potassium perchlorate as said oxidizer at 60%; and

strontium carbonate as said coolant at 20%, said percentages stated by weight of said gas generant composition.