OXALYL DIHYDRAZIDE COMPOSITIONS AND USE AS A COOLANT IN GAS GENERATING PROCESS

• US 3,839,105 A
• Filed: 03/10/1972
• Issued: 10/01/1974
• Est. Priority Date: 03/10/1972
• Status: Expired due to Term

• Current Assignee: Eugene Pacanowsky, Ivan L. Dewitt
• Original Assignee: Eugene Pacanowsky, Ivan L. Dewitt
• Inventors: Dewitt, Ivan L., Pacanowsky, Eugene
• Primary Examiner(s): Padgett, Benjamin R.
• Application Number:
  US05/233,790
• Time in Patent Office: 935 Days
• Field of Search: 149/19,36,76,83 280/15AB 23/281
• US Class Current: 149/19.4
• CPC Class Codes: C06B 23/04 for cooling the explosion gases including antifouling and flash suppressing agents
• CPC Class Codes: C06B 47/08 a component containing hydrazine or a hydrazine derivative
• CPC Class Codes: C06D 5/06 by reaction of two or more solids

Abstract

A curable homogeneous gas-generating composition composed essentially of oxalyl dihydrazide coolant combined with: (a) a perchlorate oxidizer selected from the group consisting of ammonium perchlorate, the alkali metal perchlorates, and the alkali earth metal perchlorates, (b) a combustible fuel binder, and (c) propellant adjuvants. A process for the preparation of oxalyl dihydrazide is also disclosed. The gas-generating compositions of the present invention have greatly improved combustion characteristics and exhibit reduced flame temperatures.

Claims

1. A CURABLE NOMOGENEOUS GAS GENERATING COMPOSITION COMPOSED ESSENTIALLY OF FROM ABOUT 10-60 PERCENT BY WEIGHT OF OXALY DIHYDRAZIDE COOLANT COMBINED WITH:

A. FROM ABOUT 20-80 PERCENT BY WEIGHT OF PERCHLORATE OXIDIZER SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PERCHLORATE, THE ALKALI METAL PERCHLORATES, AND THE ALKALINE EARTH METAL PERCHLORATES;

B. FROM ABOUT 15-35 PERCENT BY WEIGHT OF A COMBUSTIBLE FUEL BINDER SELECTED FROM THE GROUP CONSISTING OF POLYESTER, POLYESTER-POLYURETHANE, CARBOXYL-TERMINATED LINEAR POLYESTER, CARBOXYL-TERMINATED LINEAR ALIPHATIC HYDROCAR BON, CARBOXYL-TERMINATED POLYBUTADIENE, HYDROXYLTERMINATED LINEAR ALIPHATIC HYDROCARBON, AND HYDROXYLTERMINATED POLYBUTADIENE RESINS, AND C. FROM ABOUT 0-10 PERCENT BY WEIGHT OF PROPELLANT ADJUVANT.

2. The composition of claim 1 wherein (a) the oxidizer is ammonium perchlorate.

3. The composition of claim 1 wherein (a) the oxidizer is sodium perchlorate.

4. The composition of claim 1 wherein (a) the oxidizer is potassium perchlorate.

5. The composition of claim 1 wherein (a) the oxidizer is lithium perchlorate.

6. The composition of claim 1 wherein (b) the combustible fuel binder is a polyester resin.

7. The composition of claim 1 wherein (b) the combustIble fuel binder is polyester-polyurethane.

8. The composition of claim 1 wherein (b) the combustible fuel binder is a carboxyl terminated linear polyester.

9. The composition of claim 1 wherein (b) the combustible fuel binder is a carboxyl-terminated linear aliphatic hydrocarbon.

10. The composition of claim 1 wherein (b) the combustible fuel binder is carboxyl-terminated polybutadiene.

11. The composition of claim 1 wherein (b) the combustible fuel binder is a hydroxyl-terminated linear aliphatic hydrocarbon.

12. The composition of claim 1 wherein (b) the combustible fuel binder is hydroxyl-terminated polybutadiene.

13. The composition of claim 1 wherein (c) the propellant adjuvant is 2,4-diamino-6 phenyl-triazine.

14. The composition of claim 6 wherein (c) the propellant adjuvant is carbon black.

15. A curable homogeneous gas generating composition composed essentially of from about 20-60 percent by weight of oxalyl dihydrazide combined with:

a. from about 20-80 percent by weight of ammonium perchlorate oxidizer, b. from about 15-35 percent by weight of a polyester fuel binder, and c. from about 0-5 percent by weight of 2,4-diamino-6-phenyl-triazine.

16. The composition of claim 15 wherein (b) the polyester binder is of the polyester-urethane type.

17. The composition of claim 15 wherein the polyester binder is a thiol terminated polyester-urethane.

18. The composition of claim 15 wherein the polyester binder is a carboxyl-terminated linear polyester.

19. The method of preparing a cured gas generating composition which comprises mixing:

a. from about 20-80 percent by weight of perchlorate oxidizer selected from the group consisting of ammonium perchlorate, the alkali metal perchlorates, and the alkaline earth metal perchlorates, b. from about 15-35 percent by weight of a combustible fuel binder including curing agents wherein the combustible fuel binder is selected from the group consisting of polyester, polyester-polyurethane, carboxyl-terminated linear polyester, carboxyl-terminated linear aliphatic hydrocarbon, carboxyl-terminated polybutadiene, hydroxyl-terminated linear aliphatic hydrocarbon, and hydroxyl-terminated polybutadiene resins, c. from about 20-60 percent by weight of oxalyl dihydrazide coolant, and d. from about 0-10 percent by weight of propellant adjuvant, and casting the resultant mixture into a cured gas-generating composition.

20. The method of claim 19 wherein (a) the oxidizer is ammonium perchlorate.

21. The method of claim 19 wherein (a) the oxidizer is sodium perchlorate.

22. The method of claim 19 wherein (a) the oxidizer is potassium perchlorate.

23. The method of claim 19 wherein (a) the oxidizer is lithium perchlorate.

24. The method of claim 19 wherein (b) the combustible fuel binder is a polyester resin.

25. The method of claim 19 wherein (b) the combustible fuel binder is polyester-polyurethane.

26. The method of claim 19 wherein (b) the combustible fuel binder is a carboxyl-terminated linear polyester.

27. The method of claim 19 wherein (b) the combustible fuel binder is a thiol terminated polyester-urethane.

28. The method of claim 19 wherein (b) the combustible fuel binder is a carboxyl-terminated linear aliphatic hydrocarbon.

29. The method of claim 19 wherein (b) the combustible fuel binder is carboxyl-terminated polybutadiene.

30. The method of claim 19 wherein (b) the combustible fuel binder is a hydroxyl-terminated linear aliphatic hydrocarbon.

31. The method of claim 19 wherein (b) the combustible fuel binder is a hydroxyl-terminated polybutadiene.

32. The method of claim 19 wherein (d) the propellant adjuvant is 2,4-diamino-6 phenyl-triazine.

33. The method of claim 19 wherein (d) the propellant adjuvant is carbon black.