US4310364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion explosive sensitive to a detonator
Assignee: Nitro Nobel AB
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Filing: 1980-01-03
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Granted: 1982-01-12
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Expires: 2000-01-03
Abstract
Abstract Emulsion explosive sensitive to a detonator, which can be initiated with a conventional detonator no. 8, of water-in-oil-emulsion type containing sensitizers which, as opposed to types known previously, here comprise aromatic nitro-compounds, in which emulsion the organic phase consists primarily of the aromatic nitro-compounds and the water phase consists primarily of a water solution of inorganic oxidizing salts and in which emulsion emulsifier is also included; detonation stabilizers in the form of particles with enclosed or adsorbed gas ("hot spots"); additional fuels such as aluminium, urea, etc.; optional stabilizers for the organic phase and for the water phase; and possibly an agent to lower the crystallization point.
Inventors
- 👤 Gunnar O. Ekman
- 👤 Lars A. Granlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:12
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14; C06B47/145; C06B25/00; C06B25/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
107 words
An emulsion explosive of the water-in-oil type which is sensitive to a no. 8 detonator, consisting essentially of: 5-20 percent by weight of an organic phase consisting of aromatic nitro-compounds as a sensitizer, said nitro compounds being selected from the group consisting of mono-, di- and tri-nitro toluenes, mono-nitro benzene, di-nitro benzenes, mono- and di-nitroxylenes and mixtures of said nitro-compounds; 5-18 percent by weight water; 0.5-4 percent by weight of an emulsifier with a hydrophile-lipophile balance less than 7; 1-10 percent by weight of inorganic particles with enclosed or absorbed gas as "hot spots"; and 60-90 percent by weight of inorganic oxidizing salts in the water phase.
Claim 2
Dependent Claim
107 words
An emulsion explosive of the water-in-oil type which is sensitive to a no. 8 detonator, consisting essentially of: 5-20 percent by weight of an organic phase consisting of aromatic nitro-compounds as a sensitizer, said nitro compounds being selected from the group consisting of mono-, di- and tri-nitro toluenes, mono-nitro benzene, di-nitro benzenes, mono- and di-nitroxylenes and mixtures of said nitro-compounds; 5-18 percent by weight water; 0.5-4 percent by weight of an emulsifier with a hydrophile-lipophile balance less than 7; 1-10 percent by weight of inorganic particles with enclosed or absorbed gas as "hot spots"; and 60-90 percent by weight of inorganic oxidizing salts in the water phase.
Claim 3
Dependent Claim
26 words
An emulsion explosive as claimed in claim 1 wherein said oxidizing salts are selected from the group consisting of ammonium nitrate, sodium nitrate and calcium nitrate.
Claim 4
Dependent Claim
15 words
An emulsion explosive as claimed in claim 1 comprising urea to lower the crystallization point.
Claim 5
Dependent Claim
19 words
An emulsion explosive as claimed in claim 1 comprising cellulose nitrate as a thickener to stabilize the organic phase.
Claim 6
Dependent Claim
22 words
An emulsion explosive as claimed in claim 1 comprising guar rubber or xanthane rubber as a thickener to stabilize the water phase.
Claim 7
Dependent Claim
21 words
An emulsion explosive as claimed in claim 1 wherein said aromatic sensitizer consists of a mixture of di-nitro toluene and di-nitroxylene.
Claim 8
Dependent Claim
22 words
An emulsion explosive as claimed in claim 1 wherein said aromatic sensitizer consists of a mixture of mono-nitro toluene and di-nitro toluene.
Claim 9
Dependent Claim
16 words
An emulsion explosive as claimed in claim 1 comprising up to 10% of an additional fuel.
Claim 10
Dependent Claim
17 words
An emulsion explosive as claimed in claim 1 comprising a water soluble fuel in said water phase.
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) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |