Patent · US Active

Gasser composition and method of gassing

US7972454B2 · kind B2 · utility

1Cited by

13References

19Claims

0Family size

Assignee

Orica Australia Pty Ltd · AU

Inventors

Helen O'Hara · Melbourne, AU
David Stow · Gothenburg, SE
David Yates · Melbourne, AU

Key dates

Filing date	Aug 27, 2001
Grant date	Jul 5, 2011
Priority date	—
Expiry date	Jan 28, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC06B47/145
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method of preparing a gassed water-in-oil emulsion explosives composition from a gasser solution of an inorganic nitrate, an ammonium species and an optional accelerator which is added to an emulsion explosive composition, reacts and forms gas bubbles is disclosed. The emulsion explosive composition is composed of a discontinuous aqueous phase, a continuous water immiscible organic phase, and an emulsifier. The reaction between the gasser solution and the emulsion explosive composition is such that the emulsifier does not undergo chemical attack.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.