US3617404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slurryxplosives containing the combination of nitrogen-base salt and hard solid particles as sensitizer
Assignee: ETI EXPLOSIVES TECHNOLOGIES INTE
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Filing: 1969-02-14
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Granted: 1971-11-02
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Expires: 1989-02-14
Abstract
Abstract A water-bearing slurry explosive containing inorganic oxidizing salt, fuel, water and thickener together with nitrogen-base salt and solid particles having a hardness of at least 4 on the Mohs scale and that have an acoustic impedance at least two times that of the matrix of the slurry explosive.
Inventors
- 👤 William M Lyerly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:57
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14; Y; Y10; Y10S; Y10S149/00; Y10S149/118
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
161 words
A water-bearing explosive composition of improved sensitivity and having a high velocity of detonation containing inorganic oxidizing salt, fuel, water and thickener, wherein the improvement comprises including in said water-bearing explosive sensitizer comprising: A. about from l5 to 60 percent by weight based on the total composition of at least one nitrogen-base salt of an inorganic oxidizing acid and a base selected from the group consisting of (1) acyclic nitrogen bases having no more than 2 hydrogen atoms bonded to the basic nitrogen and up to 3 carbon atoms per basic nitrogen and (2) phenyl amines, said nitrogen base salt having an oxygen balance more positive than about -150, and B. about from l to 20 percent by weight of solid particles having a hardness value of At least about 4, based on Mohs scale, and that have an acoustic impedance at least 2 times that of the slurry explosive matrix, said solid particles being distributed substantially uniformly throughout said composition.
Claim 2
Dependent Claim
161 words
A water-bearing explosive composition of improved sensitivity and having a high velocity of detonation containing inorganic oxidizing salt, fuel, water and thickener, wherein the improvement comprises including in said water-bearing explosive sensitizer comprising: A. about from l5 to 60 percent by weight based on the total composition of at least one nitrogen-base salt of an inorganic oxidizing acid and a base selected from the group consisting of (1) acyclic nitrogen bases having no more than 2 hydrogen atoms bonded to the basic nitrogen and up to 3 carbon atoms per basic nitrogen and (2) phenyl amines, said nitrogen base salt having an oxygen balance more positive than about -150, and B. about from l to 20 percent by weight of solid particles having a hardness value of At least about 4, based on Mohs scale, and that have an acoustic impedance at least 2 times that of the slurry explosive matrix, said solid particles being distributed substantially uniformly throughout said composition.
Claim 3
Dependent Claim
14 words
The product of claim 1 wherein the nitrogen-base salt is an aliphatic amine nitrate.
Claim 4
Dependent Claim
16 words
The product of claim 2 wherein the solid particles are sand, ferrophosphorus, ferrosilicon or silicon carbide.
Claim 5
Dependent Claim
13 words
The product of claim 2 wherein the aliphatic amine nitrate is ethanolamine nitrate.
Claim 6
Dependent Claim
13 words
The product of claim 2 wherein the aliphatic amine nitrate is alkylamine nitrate.
Claim 7
Dependent Claim
12 words
The product of claim 5 wherein the alkylamine nitrate is monomethylamine nitrate.
Claim 8
Dependent Claim
12 words
The product of claim 5 wherein the alkylamine nitrate is ethylenediamine dinitrate.
Claim 9
Dependent Claim
104 words
The product of claim 6 free of self-explosives. 9 The product of claim 6 wherein the inorganic oxidizing salt is ammonium nitrate or sodium nitrate or mixtures thereof. l0. The product of claim 9 containing l0 to 25 percent water. ll. The product of claim 9 wherein the solid particles are ferrophosphorus. l2. The product of claim 9 wherein the solid particles are sand. l3. The product of claim 9 wherein the solid particles are ferrosilicon. l4. The product of claim 9 wherein the solid particles are silicon carbide. l5. The product of claim 5 containing 3 to l0 percent by weight solid particles.
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |