Water-in-oil emulsion blasting agent
AssigneeCanadian Industries Limited
InventorsRejean Binet, Philip F. L. Seto
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Abstract
A water-in-oil emulsion explosive composition is provided containing sorbitan mono-oleate, sorbitan sesquioleate and glycerides of fatty acids as the emulsification agent and also containing a highly clorinated paraffinic hydrocarbon as an emulsification promoter. The presence of the clorinated hydrocarbon produces improved sensitivity even in small diameter cartridges.
Claims8
A water-in-oil emulsion explosive composition which is cap-sensitive in small diameter charges, which comprises
- (a) an aqueous solution of inorganic oxygen-supplying salt as a discontinuous emulsion phase;
- (b) a water-immiscible liquefiable carbonaceous fuel as a continuous emulsion phase;
- (c) occluded gas dispersed in said emulsion as an additional discontinuous phase;
- (d) an oil-soluble emulsification agent selected from the group consisting of sorbitan mono-oleate, sorbitan-sesqui-oleate, mono and diglycerides of fat-forming fatty acids or mixtures thereof;
- (e) an emulsification promoter comprising from 0.1% to 2.0% by weight of the total composition of a highly chlorinated paraffinic hydrocarbon comprising 10 to 20 carbon atoms.
A cap-sensitive water-in-oil emulsion explosive composition comprising essentially from 10% to 25% by weight of water, from 55% to 85% by weight of an inorganic oxygen-supplying salt, from 2% to 10% by weight of a water-immiscible liquefiable carbonaceous fuel, from 0.5% to 2% by weight of a water-in-oil emulsification agent, occluded gas, and as an emulsification promoter 0.1% to 2% by weight of a highly chlorinated paraffinic hydrocarbon comprising 10 to 20 carbon atoms.
Dependencies are inferred from the claim text.