The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 1989
Filed:
Dec. 03, 1987
Lee F McKenzie, Riverton, UT (US);
Lawrence D Lawrence, Sandy, UT (US);
IRECO Incorporated, Salt Lake City, UT (US);
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.