Word: flashless
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Dates: during 1941-1941
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...Hercules Powder Co. of Wilmington was assigned Patent No. 2,228,309 for an artillery gunpowder which is smokeless, moisture-resistant and flashless. Other such powders have been developed but they are complicated, costly, hard to handle. The new powder contains only three ingredients: nitrocellulose, dinitrotoluene, diphenylamine. These are treated with an alcohol-acetone solvent, mixed, squirted out in strands like spaghetti, finally pulverized to grain size...
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