Charcoal-free black powder type granules and method of productio

Details Charcoal-free black powder type granules and method of productio Charcoal-free black powder type granules and method of productio

1993-07-08

1994-06-14

Nelson, Peter A.

Explosive and thermic compositions or charges

Containing inorganic nitrogen-oxygen salt

Alkali metal or alkaline earth metal nitrate salt

264 35, 264 36, C06B 3102, C06B 2100

Patent

active

053206916

ABSTRACT:
A method of producing an energetic composition comprising the steps of (a) issolving an alkali metal hydroxide in aqueous denatured alcohol to form an alcohol and alkali metal hydroxide solution; (b) kneading phenolphthalein or other reaction product of a phenolic compound and phthalic anhydride with sulfur, potassium nitrate and said alkali metal hydroxide solution formed in step (a); (c) allowing the kneaded product formed in step (b) to dry through evaporation of the aqueous denatured alcohol; (d) granulating the dried product formed in step (c); and (e) further drying the granulated product formed in step (d). An alternate method is also disclosed in which an alkali metal salt of phenolphthalein is used so as to avoid use of the alkali metal hydroxide in the aqueous denatured alcohol. Granular products are disclosed and closed bomb test results are presented. Certain products match the performance of commercial black powder.

REFERENCES:
patent: 3702353 (1972-11-01), Henderson et al.
patent: 4032375 (1977-06-01), Wasson
patent: 4358327 (1982-11-01), Reed, Jr. et al.
patent: 4436525 (1984-03-01), Zmoda et al.
patent: 4547235 (1985-10-01), Schneiter et al.
Selzer et al., U.S.S.I.R. #H705, Nov. 7, 1989.

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