US3765967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid and slurry explosives of controlled high sensitivity
Assignee: Ireco Inc
•
Filing: 1972-03-23
•
Granted: 1973-10-16
•
Expires: 1992-03-23
Abstract
Abstract Dense liquid or slurry explosive compositions, which can be pumped or poured and detonated in very slender columns have a liquid menstruum made sufficiently sensitive per se for cap detonation in diameters as small as one-half inch. They comprise a complete solution of an alkali or alkaline earth metal perchlorate, e.g. sodium perchlorate, combined preferably with a small amount of ammonium or sodium nitrate, organic liquid fuel, preferably ethylene glycol, and solid particulate aluminum as fuel, TNT, PETN or RDX also can be added. Basic sensitivity is provided by molecularly adjacent fuel with all oxidizer in solution.
Inventors
- 👤 A Funk
- 👤 B Hansen
- 👤 M Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:39
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
37 words
Composition according to claim 1 which also contains a small amount of an inorganic nitrate oxidizing salt which is substantially dissolved both at manufacture and use in said liquid mass to lower its crystallization or fudge point.
Claim 2
Dependent Claim
43 words
Composition according to claim 1 which also comprises a finely divided solid fuel suspended in said liquid mass and a thickener for said liquid to substantially increase its viscosity and to stabilize said finely divided suspended fuel against segregation from said liquid mass.
Claim 3
Dependent Claim
25 words
Composition according to claim 3 in which the solid fuel comprises finely divided metallic aluminum up to 45 percent by weight of the total composition.
Claim 4
Dependent Claim
15 words
Composition according to claim 3 in which the solid fuel comprises a finely divided self-explosive.
Claim 5
Dependent Claim
12 words
Composition according to claim 5 in which the self-explosive is pentaerythritol tetranitrate.
Claim 6
Dependent Claim
32 words
Composition according to claim 1 which also comprises a finely divided solid fuel suspended in and insoluble in said liquid mass in proportions up to 65 percent by weight of the total.
Claim 7
Dependent Claim
49 words
Composition according to claim 1 which comprises 20 to 60 percent by weight of sodium perchlorate, an alcohol, a thickener sufficient to stabilize suspended particles against segregation from said liquid mass, and enough solid suspended particulate fuel to keep overall oxygen balance within limits of -50 to +10 percent.
Claim 8
Dependent Claim
23 words
Composition according to claim 8 which has its density lowered sufficiently by incorporation of additional quantities of air bubbles to increase its sensitivity.
Claim 9
Dependent Claim
24 words
Composition according to claim 8 wherein the solid fuel is a self-explosive in proportions up to 65 percent by weight of the total composition.
Claim 10
Dependent Claim
12 words
Composition according to claim 10 in which the self-explosive is pentaerythritol tetranitrate.
Claim 11
Dependent Claim
30 words
Composition according to claim 1 in which the liquid phase comprises 20 to 60 percent by weight of sodium perchlorate, up to 10 percent of sodium nitrate and a thickener.
Claim 12
Dependent Claim
13 words
Composition according to claim 12 in which the thickener is a cross-linked gum.
Claim 13
Dependent Claim
25 words
Composition according to claim 1 which has its density lowered by an amount of about 0.1 to 0.3 g/cc. by including a dispersed gas therein.
Claim 14
Dependent Claim
12 words
Composition according to claim 14 which includes a thickener for the liquid.
Claim 15
Dependent Claim
18 words
Composition according to claim 1 wherein said oxidizing salt comprises calcium perchlorate and the organic liquid comprises methanol.
Claim 16
Dependent Claim
12 words
Composition according to claim 1 which comprises formamide as an organic liquid.
Claim 17
Dependent Claim
45 words
Composition according to claim 1 which comprises a major proportion of a perchlorate and a minor proportion of a nitrate as the oxidizing salt, said composition containing sufficient widely dispersed gas entrapped therein to lower its density about 0.1 to 0.3 grams per cubic centimeter.
Claim 18
Dependent Claim
13 words
Composition according to claim 1 in which said oxidizing salt is calcium perchlorate.
Claim 19
Dependent Claim
12 words
Composition according to claim 1 where said organic liquid fuel is methanol.
Claim 20
Dependent Claim
142 words
A sensitive blasting composition comprising a substantially oxygen-balanced liquid mass which is detonable per se and which includes 0 to 25 percent water and 5 to 30 percent of a water-compatible organic liquid having fuel value of 7,000 British Thermal Units per pound or greater selected from the group consisting of diols; methyl, ethyl or propyl alcohols; aldehydes; ketones; amines; amides and alcohol-amines and mixtures of two or more of these and having dissolved therein an inorganic oxidizing salt, said salt comprising a nitrate selected from the group of alkali metal and alkaline earth metal nitrates, said water-compatible organic liquid having sufficient solvency such that said nitrate remains completely in solution and hence in molecular contact with said organIc liquid at the temperature of manufacture and also at the temperature of use, said liquid mass containing numerous tiny gas bubbles dispersed therein.
Claim 21
Dependent Claim
12 words
Composition according to claim 21 in which said organic liquid is methanol.
Claim 22
Dependent Claim
14 words
Composition according to claim 21 in which said inorganic oxidizer salt is calcium nitrate.
Claim 23
Dependent Claim
13 words
Composition according to claim 21 wherein the organic liquid fuel is ethylene glycol.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |