White propellant compositions

• US 7,914,633 B1
• Filed: 10/10/2007
• Issued: 03/29/2011
• Est. Priority Date: 01/28/2003
• Status: Active Grant

• Current Assignee: Hodgdon Powder Company, Inc.
• Original Assignee: Hodgdon Powder Company, Inc.
• Inventors: Barrett, G Dean, Dielh, Terry M, Bowen, Thomas W
• Primary Examiner(s): McDonough; James E
• Application Number:
  US11/870,383
• Time in Patent Office: 1,266 Days
• Field of Search: 149/83, 149/45, 149/61, 149/70, 149/75, 149/77, 149/109.4
• US Class Current: 149/45
• CPC Class Codes: C06B 21/0008 Compounding the ingredient
• CPC Class Codes: C06B 29/12 with carbon or sulfur
• CPC Class Codes: C06B 29/16 with a nitrated organic compound
• CPC Class Codes: C06B 31/10 with carbon or sulfur
• CPC Class Codes: C06B 31/14 the compound being an aromatic
• CPC Class Codes: C06B 45/00 Compositions or products which are defined by structure or arrangement of component of product explosive charges of particular form or shape F42B1/00, F42B3/00
• CPC Class Codes: C06B 45/10 the organic component containing a resin

Abstract

Sulfur-free and carbon-free, white propellant compositions for use as a blackpowder substitute in firearms, munitions, and pyrotechnics to form combustion byproducts that are water soluble and are free of corrosive sulfur compounds and black carbon residues. Formulations include a fuel agent selected from the group consisting of sodium benzoate, lactose, sodium salicylate, sodium m-nitrobenzoate, and mixtures thereof. The fuel agent is combined with dextrin, potassium nitrate, potassium perchlorate, and tricalcium phosphate. Dicyanodiamide may be incorporated in the formulation as a burn rate modifier.

Claims

1. A white propellant composition free of elemental sulfur and elemental carbon, said composition consisting of a fuel agent select from the group consisting sodium benzoate and sodium m-nitrobenzoate and mixtures thereof, dextrin, present in the range of 4 to 8 percent by weight, potassium nitrate, potassium perchlorate and tricalcium phosphate present in the range of 0.1 to 0.7 percent by weight.

2. The propellant composition as in claim 1, said fuel agent present in the range of 17 to 25 percent by weight.

3. The propellant composition as in claim 2, said fuel agent present in the range of 19 to 23 percent by weight.

4. The propellant composition as in claim 2 with potassium nitrate present in the range of 42 to 52 percent by weight and potassium perchlorate present in the range of 21 to 31 percent by weight.

5. The propellant composition as in claim 4, said fuel agent present in the range of 19 to 23 percent by weight;

dextrin present in the range of 5.5 to 6.5 percent by weight;

potassium nitrate present in the range of 45 to 49 percent by weight;

potassium perchlorate present in the range of 24 to 28 percent by weight; and

tricalcium phosphate present in the range of 0.3 to 0.5 percent by weight.

6. The propellant composition as in claim 1, said fuel agent consisting of sodium benzoate present in the range of 17 to 25 percent by weight;

dextrin present in the range of 4 to 8 percent by weight;

potassium nitrate present in the range of 42 to 52 percent by weight;

potassium perchlorate present in the range of 21 to 31 percent by weight; and

tricalcium phosphate present in the range of 0.1 to 0.7 percent by weight.

7. The propellant composition as in claim 6 with sodium benzoate present in the range of 19 to 23 percent by weight;

dextrin present in the range of 5.5 to 6.5 percent by weight;

potassium nitrate present in the range of 45 to 49 percent by weight;

potassium perchlorate present in the range of 24 to 28 percent by weight; and

tricalcium phosphate present in the range of 0.3 to 0.5.

8. A white propellant composition free of elemental sulfur and elemental carbon, said composition consisting of a fuel agent select from the group consisting sodium benzoate and sodium m-nitrobenzoate and mixtures thereof, dextrin, potassium nitrate, potassium perchlorate, tricalcium phosphate, and dicyanodiamide.

9. The propellant composition as in claim 8, said fuel agent present in the range of 17 to 25 percent by weight.

10. The propellant composition as in claim 9, said fuel agent present in the range of 19 to 23 percent by weight.

11. The propellant composition as in claim 9 with potassium nitrate present in the range of 42 to 52 percent by weight;

potassium perchlorate present in the range of 21 to 31 percent by weight; and

dicyanodiamide present in the range of 0 to 5 percent by weight.

12. The propellant composition as in claim 11, said fuel agent present in the range of 19 to 23 percent by weight;

dextrin present in the range of 5.5 to 6.5 percent by weight;

potassium nitrate present in the range of 45 to 49 percent by weight;

potassium perchlorate present in the range of 24 to 28 percent by weight;

tricalcium phosphate present in the range of 0.3 to 0.5 percent by weight; and

dicyanodiamide present in the range of 0 to 5 percent by weight.

13. The propellant composition as in claim 8, said fuel agent consisting of sodium benzoate present in the range of 17 to 25 percent by weight;

dextrin present in the range of 4 to 8 percent by weight;

potassium nitrate present in the range of 42 to 52 percent by weight;

potassium perchlorate present in the range of 21 to 31 percent by weight;

tricalcium phosphate present in the range of 0.1 to 0.7 percent by weight; and

dicyanodiamide present in the range of 0 to 5 percent by weight.

14. The propellant composition as in claim 13 with sodium benzoate present in the range of 19 to 23 percent by weight;

dextrin present in the range of 5.5 to 6.5 percent by weight;

potassium nitrate present in the range of 45 to 49 percent by weight;

potassium perchlorate present in the range of 24 to 28 percent by weight;

tricalcium phosphate present in the range of 0.3 to 0.5; and

dicyanodiamide present in the range of 0 to 5 percent by weight.