Patent US4407777A successfully refreshed from Google Patents.
US4151022A
Expired / Lapsed
US
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Immobilized explosive component in foamed matrix
Assignee: Orica Ltd
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Filing: 1977-11-14
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Granted: 1979-04-24
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Expires: 1997-11-14
Abstract
Abstract An explosive composition comprising a dispersion of an explosive component which is located in and immobilized by a foamed non-explosive matrix.
Inventors
- 👤 Paul F. Donaghue
- 👤 Kenneth A. W. Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:08
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B21/00; C06B21/0091
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
22 words
An explosive composition comprising a dispersion of an explosive component which is located in and immobilized by a solidified foamed non-explosive matrix.
Claim 2
Dependent Claim
22 words
An explosive composition comprising a dispersion of an explosive component which is located in and immobilized by a solidified foamed non-explosive matrix.
Claim 3
Dependent Claim
37 words
A composition according to claim 1 wherein the said explosive component comprises at least one inorganic oxygen-releasing salt selected from the group consisting of the nitrate, chlorate, and perchlorate of alkali metals, alkaline earth metals and ammonium.
Claim 4
Dependent Claim
31 words
A composition according to claim 1 wherein the said explosive component comprises at least one inorganic oxygen-releasing salt selected from the group consisting of calcium nitrate, potassium nitrate and sodium nitrate.
Claim 5
Dependent Claim
14 words
A composition according to claim 1 wherein the said explosive component comprises ammonium nitrate.
Claim 6
Dependent Claim
16 words
A composition according to claim 1 wherein the said explosive component comprises, in addition, fuel material.
Claim 7
Dependent Claim
14 words
A composition according to claim 5 wherein the said fuel material is fuel oil.
Claim 8
Dependent Claim
13 words
A composition according to claim 1 wherein the said matrix comprises polymeric material.
Claim 9
Dependent Claim
23 words
A composition according to claim 7 wherein the said matrix comprises material selected from the group consisting of polyesters, polyurethanes and urea-formaldehyde resins.
Claim 10
Dependent Claim
26 words
A composition according to claim 1 in which the density of the said composition lies in a range from 0.05 to 0.7 gram per cubic centimeter.
Claim 11
Dependent Claim
21 words
A composition according to claim 1 wherein the said explosive component constitutes from 40 to 95% w/w of the said composition.
Claim 12
Dependent Claim
21 words
A composition according to claim 1 wherein the said explosive component constitutes from 60 to 90% w/w of the said composition.
Claim 13
Dependent Claim
57 words
A process for the preparation of an explosive composition according to claim 1 which process comprises, in combination, dispersing an explosive component in a mobile foam to form a mobile explosive foam and treating said explosive foam so as to convert it to a solidified foamed matrix in which the said explosive component is located and immobilized.
Claim 14
Dependent Claim
66 words
A process according to claim 12 which process comprises the steps of blending an explosive component with a non-explosive foamable material, converting said foamable material to a foamed form in a manner such that the said explosive component is dispersed therein, and treating said formed form so as to convert it to a solidified foamed matrix in which the said explosive component is located and immobilized.
Claim 15
Dependent Claim
48 words
A process according to claim 12 which process comprises the steps of blending an explosive component with a nonexplosive foamable material and reacting the blend so formed with a catalyst so as to form a solidified foamed matrix in which the said explosive component is located and immobilized.
Claim 16
Dependent Claim
64 words
A process according to claim 12 which process comprises the steps of blending an explosive component with a first component of a non-explosive foamable material, admixing therewith a second component of a non-explosive foamable material so as to form an explosive mobile foam and thereafter converting said explosive foam to a solidified foamed matrix in which the said explosive component is located and immobilized.
Claim 17
Dependent Claim
68 words
A process according to claim 12 which process comprises the concurrent mixing of a first component comprising explosive material with a second component and a third component, said second and third components being such that when mixed together they form a solidifiable mobile foam and therafter converting the mobile explosive foam so formed to a solidified foamed matrix in which the said explosive component is located and immobilized.
Claim 18
Dependent Claim
65 words
A process according to claim 12 which process comprises blending two or more materials which when mixed together form a solidifiable mobile foam, adding to the foam so formed an explosive component so as to form an explosive mobile foam, and treating said explosive foam so as to convert it to a solidified foamed matrix in which the said explosive component is located and immobilized.
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) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |