Charcoal-free black powder type granules and method of production
First Claim
1. A method of producing an energetic composition comprising the steps of:
- (a) dissolving an alkali metal hydroxide in a solvent selected from the group consisting of water, ethanol, denatured alcohol and mixtures thereof to form an alkali metal hydroxide solution;
(b) kneading the reaction product of a phenolic compound and phthalic anhydride with sulfur, an alkali metal nitrate selected from potassium nitrate and sodium 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 solvent used in step (a);
(d) granulating the dried product formed in step (c); and
(e) further drying the granulated product formed in step (d).
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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.
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Citations
26 Claims
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1. A method of producing an energetic composition comprising the steps of:
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(a) dissolving an alkali metal hydroxide in a solvent selected from the group consisting of water, ethanol, denatured alcohol and mixtures thereof to form an alkali metal hydroxide solution; (b) kneading the reaction product of a phenolic compound and phthalic anhydride with sulfur, an alkali metal nitrate selected from potassium nitrate and sodium 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 solvent used in step (a); (d) granulating the dried product formed in step (c); and (e) further drying the granulated product formed in step (d). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of producing an energetic composition comprising the steps of:
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(a) kneading an alkali metal salt of a reaction product of a phenolic compound and phthalic anhydride with sulfur, an alkali metal nitrate selected from potassium nitrate and sodium nitrate and a solvent selected from the group consisting of water, ethanol, denatured alcohol and mixtures thereof; (b) allowing the kneaded product formed in step (c) to dry through evaporation of the solvent used in step (a); (c) granulating the dried product formed in step (b); and (d) further drying the granulated product formed in step (c). - View Dependent Claims (10, 11, 12, 13)
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14. An energetic composition produced by the method comprising the steps of:
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(a) dissolving an alkali metal hydroxide in a solvent selected from the group consisting of water, ethanol, denatured alcohol and mixtures thereof to form an alkali metal hydroxide solution; (b) kneading the reaction product of a phenolic compound and phthalic anhydride with sulfur, an alkali metal nitrate selected from potassium nitrate and sodium 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 solvent used in step (a); (d) granulating the dried product formed in step (c); and (e) further drying the granulated product formed in step (d). - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. An energetic composition produced by the method comprising the steps of:
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(a) kneading an alkali metal salt of a reaction product of a phenolic compound and phthalic anhydride with sulfur, an alkali metal nitrate selected from potassium nitrate and sodium nitrate and a solvent selected from the group consisting of water, ethanol, denatured alcohol and mixtures thereof; (b) allowing the kneaded product formed in step (c) to dry through evaporation of the solvent used in step (a); (c) granulating the dried product formed in step (b); and (d) further drying the granulated product formed in step (c). - View Dependent Claims (23, 24, 25, 26)
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Specification