PYROTECHNIC COMPOSITION

• US 3,664,898 A
• Filed: 08/04/1969
• Issued: 05/23/1972
• Est. Priority Date: 08/04/1969
• Status: Expired due to Term

• Current Assignee: Francis R. Taylor, Patricia J. Leader, Raymond P. Westerdahl
• Original Assignee: Francis R. Taylor, Patricia J. Leader, Raymond P. Westerdahl
• Inventors: Taylor, Francis R., Leader, Patricia J., Westerdahl, Raymond P.
• Primary Examiner(s): Quarforth, Carl D.
• Assistant Examiner(s): Lechert, Jr., Stephen J.
• Application Number:
  US04/847,389
• Time in Patent Office: 1,023 Days
• Field of Search: 149/37,45,40,46,41,61,42,75,43,76,77
• US Class Current: 149/41
• CPC Class Codes: C06B 33/00 Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
• CPC Class Codes: C06C 15/00 Pyrophoric compositions; Flints chemical lighters C06C9/00; alloys in general C22C

Abstract

The addition of transition metals or oxides or salts thereof, to pyrotechnic compositions containing conventional fuels and oxidizers, to greatly improve the luminous efficiency, average luminous output and propagative burning characteristics of such pyrotechnic compositions. The elements and compounds which are added also reduce the burning rate and lower the ignition temperature of such pyrotechnic compositions.

Claims

2. The pyrotechnic composition of claim 1 wherein said salts are selected from the group consisting of Na2CrO4, VOSO4, Zr(NO3)4.5H2O, Na2WO4.2H2O, KMnO4 and Na2Cr2O7.2H2O.

3. The pyrotechnic composition of claim 1 wherein said oxides are selected from the group consisting of Cr2O3, TiO2, Fe2O3, MnO2, Mn3O4, Mn2O3, ZrO2, WO3, MoO3 and CrO3.

4. The pyrotechnic composition of claim 1 wherein said transition metals are present in an amount between about 4 and about 12 percent by weight of said pyrotechnic composition.

5. The pyrotechnic composition of claim 1 wherein said transition metals are present in an amount between about 5 and about 7 percent by weight of said pyrotechnic composition.

6. The pyrotechnic composition of claim 5 wherein said transition metal is V.

7. The pyrotechnic composition of claim 5 wherein said transition metal is Nb.

8. The pyrotechnic composition of claim 5 wherein said transition metal is Ta.

9. The pyrotechnic composition of claim 5 wherein said transition metal is Mo.

10. The pyrotechnic composition of claim 5 wherein said transition metal is W.

11. The pyrotechnic composition of claim 5 wherein said transition metal is Mn.

12. The pyrotechnic composition of claim 2 wherein said salts are present in an amount between about 4 and about 12 percent by weight of said pyrotechnic composition.

13. The pyrotechnic composition of claim 2 wherein said salts are present in an amount between about 5 and about 7 percent by weight of said pyrotechnic composition.

14. The pyrotechnic composition of claim 13 wherein said salt of a transition metal is Na2CrO4.

15. The pyrotechnic composition of claim 13 wherein said salt of a transition metal is VOSO4.

16. The pyrotechnic composition of claim 13 wherein said salt of a transition metal is Zr(NO3)4.5H2O.

17. The pyrotechnic composition of claim 13 wherein said salt of a transition metal is Na2WO4.2H2O.

18. The pyrotechnic composition of claim 13 wherein said salt of a transition metal is KMnO4.

19. The pyrotechnic composition of claim 13 wherein said salt of a transition metal is Na2Cr2O7.2H2O.

20. The pyrotechnic composition of claim 3 wherein said oxides are present in an amount between about 4 and about 12 percent by weight of said pyrotechnic composition.

21. The pyrotechnic composition of claim 3 wherein said oxides are present in an amount between about 5 and about 7 percent by weight of said pyrotechnic composition.

22. The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is Cr2O3.

23. The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is TiO2.

24. The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is Fe2O3.

25. The pyrotechnic composiTion of claim 21 wherein said oxide of a transition metal is MnO2.

26. The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is Mn3O4.

27. The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is Mn2O3.

28. The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is ZrO2.

29. The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is WO3.

30. The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is MoO3.

31. The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is CrO3.