Nippon Oil Fats Co., Ltd.

Koji Edamura

Hiroshi Sakai

Akio Torii

Koichi Kurokawa

Tomoyuki Amano

Kazuyuki Sato

Thermostability, age stability, and ignition property at low temperatures of a W/O type emulsion explosive are remarkably improved by incorporating a chelating agent in the W/O type emulsion explosive.

Water-in-oil type emulsion explosive with chelating agent

A water-in-oil emulsion explosive having a high resistance against dead pressing is obtained by adding a cushioning medium having a high impact energy-absorbing property to a water-in-oil emulsion explosive containing a continuous phase consisting of a carbonaceous fuel, a disperse phase consisting of an aqueous solution of inorganic oxidizer salt and an emulsifier.

Water-in-oil emulsion explosive composition

A gas-retaining agent consisting of bubble assemblies, each bubble assembly being one particle consisting of a large number of bubbles agglomerated into the particle, is effective for improving the safety of water-in-oil emulsion explosive compositions against methane and coal dust, for improving the sympathetic detonability of the explosive compositions and for lowering their detonation velocity without deteriorating their strength.

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Chita, Japan

Koji Edamura