Lead-free, heavy-metal-free rim-fire priming composition dedicat

Details Lead-free, heavy-metal-free rim-fire priming composition dedicat Lead-free, heavy-metal-free rim-fire priming composition dedicat

1998-09-04

1999-11-30

Carone, Michael J.

Explosive and thermic compositions or charges

Containing inorganic nitrogen-oxygen salt

Alkali metal or alkaline earth metal nitrate salt

149 36, 149105, C06B 3128, C06B 4708, C06B 2504

Patent

active

059935774

ABSTRACT:
A lead-free, heavy-metal free rim-fire priming composition consisting essentially of diazodinitrophenol (DDNP) as a primary explosive, a low percentage of a secondary sensitization explosive (tetracene), with a high percentage of abrasive (ground glass) and a very low percentage of an effective lead-free, heavy-metal-free oxidizer. A strong binder is added to aid in the installation and retention of the composition within the rim of the casings. A dye is also included for the sole purpose of facilitating visual inspection within the casing after installation of the composition within the rim. The high percentage by weight of the ground glass (46-60%) in combination with DDNP is of principal importance. The preferred mix is comprised of 29.8% of DDNP, 4.0 tetracene, 57.0% ground glass, and 7.5% potassium nitrate with 1.5% gum tragacanth added as a binder and 0.2% Prussian Blue as a dye.

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