초록 ▼

The present invention relates to an improved explosive composition. More particularly, the invention relates to a water-in-oil emulsion explosive having improved stability and a lower viscosity. The term “water-in-oil”means a dispersion of droplets of an aqueous solution or water-miscible melt (the

The present invention relates to an improved explosive composition. More particularly, the invention relates to a water-in-oil emulsion explosive having improved stability and a lower viscosity. The term “water-in-oil”means a dispersion of droplets of an aqueous solution or water-miscible melt (the discontinuous phase) in an oil or water-immiscible organic substance (the continuous phase). The term “explosive”means both cap-sensitive explosives and noncap-sensitive explosives commonly referred to as blasting agents. The water-in-oil emulsion explosives of this invention contain a water-immiscible organic fuel as the continuous phase and an emulsified inorganic oxidizer salt solution or melt as the discontinuous phase. (The terms “solution”or “melt”hereafter shall be used interchangeably.) These oxidizer and fuel phases react with one another upon initiation by a blasting cap and/or a booster to produce an effective detonation. The explosives contain a polypropene or polybutene derivatized water-in-oil emulsifier and a density reducing agent in the form of expanded organic microspheres having a nonpolar surface and comprising homo-, co- or terpolymers of vinyl monomers (hereafter “organic microspheres”). This combination of polypropene or polybutene derivatized emulsifier and organic microspheres has been found to be particularly advantageous in the water-in-oil emulsion explosives of the present invention.

대표청구항 ▼

A-water-in-oil emulsion explosive comprising a water-immiscible organic fuel as a continous phase; an emulsified aqeous inorganic oxidizer salt solution as a discontinuous phase; an emulsifier selected from the group consisting of polypropenyl or polybutenyl succinic anhydride and polypropenyl or po

A-water-in-oil emulsion explosive comprising a water-immiscible organic fuel as a continous phase; an emulsified aqeous inorganic oxidizer salt solution as a discontinuous phase; an emulsifier selected from the group consisting of polypropenyl or polybutenyl succinic anhydride and polypropenyl or polybutenyl phenol, each of which has been derivatized with an alcohol, amine or alkanolamine; and organic microspheres as a density control agent.