Explosive and thermic compositions or charges – Structure or arrangement of component or product
Patent
1987-12-03
1989-04-11
Lechert, Jr., Stephen J.
Explosive and thermic compositions or charges
Structure or arrangement of component or product
149 46, 149 61, 149 83, C06B 4500
Patent
active
048203610
ABSTRACT:
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.
REFERENCES:
patent: 4357184 (1982-11-01), Binet et al.
Lawrence Lawrence D.
McKenzie Lee F.
IRECO Incorporated
Lechert Jr. Stephen J.
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