Patent US4308081A successfully refreshed from Google Patents.
US4308081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-in-oil emulsion blasting agent
Assignee: Orica Explosives Technology Pty Ltd
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Filing: 1979-11-26
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Granted: 1981-12-29
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Expires: 1999-11-26
Abstract
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.
Inventors
- 👤 Rejean Binet
- 👤 Philip F. L. Seto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:33
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14; C06B47/145
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
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.
Claim 2
Dependent Claim
101 words
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.
Claim 3
Dependent Claim
29 words
A composition as claimed in claim 1 wherein the inorganic oxygen-supplying salt is selected from the group consisting of the nitrates of ammonia, sodium and calcium and mixtures thereof.
Claim 4
Dependent Claim
38 words
A composition as claimed in claim 1 wherein the water-immiscible liquefiable carbonaceous fuel is selected from the group consisting of petroleum oil, paraffin oil, mineral oil, vegetable oil, paraffin wax, microcrystalline wax and mineral wax and mixtures thereof.
Claim 5
Dependent Claim
23 words
A composition as claimed in claim 1 wherein the said highly chlorinated paraffic hydrocarbon contains from 50% to 80% by weight of chlorine.
Claim 6
Dependent Claim
24 words
A composition as claimed in claim 1 wherein up to 50% by weight of the said oil-soluble emulsification agent is replaced by plant lecithin.
Claim 7
Dependent Claim
12 words
A composition as claimed in claim 1 also containing gas-containing particulate matter.
Claim 8
Dependent Claim
74 words
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.
Claim 9
Dependent Claim
74 words
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.
Claim 10
Dependent Claim
25 words
A composition as claimed in claim 7 also containing gas-containing particulate material sufficient to maintain the density of the composition between 1.00 and 1.25 grams/cc.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-28 | 1985-06-29 | 1985-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-28 | 1989-06-29 | 1989-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-28 | 1993-06-29 | 1993-12-29 | $7700.00 | Window Closed / Lapsed |