US3773573A
Expired / Lapsed
US
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Explosive composition containing monocellular thermoplastic globules and method of preparing same
Assignee: Casco Adhesives AB
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Filing: 1970-10-15
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Granted: 1973-11-20
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Expires: 1990-10-15
Abstract
Abstract A blasting agent containing a continuous phase and a plurality of discrete gas-containing globules dispersed therein is improved by incorporating into the blasting agent, as a source of such globules, hollow essentially monocellular thermoplastic particles.
Inventors
- 👤 T Slykhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:29
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/002; C06B23/003
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
20 words
The composition as defined in claim 1 wherein the particles are composed of a copolymer of vinylidene chloride and acrylonitrile.
Claim 2
Dependent Claim
14 words
The composition as defined in claim 1 wherein the continuous phase is a liquid.
Claim 3
Dependent Claim
18 words
The composition as defined in claim 3 wherein the normal viscosity of the continuous liquid phase is increased.
Claim 4
Dependent Claim
13 words
The composition as defined in claim 1 wherein the continuous phase is solid.
Claim 5
Dependent Claim
47 words
In an explosive composition containing a continuous liquid phase, solid particles of an inorganic oxidizing salt and a plurality of discrete gaseous globules dispersed in said continuous phase, the improvement which comprises: as the gaseous globules discrete gas containing hollow monocellular particles composed of a thermoplastic resin.
Claim 6
Dependent Claim
29 words
The composition as defined in claim 6 wherein said particles are less than about 200 microns in diameter and have a particle density of less than about 0.1 gm/cc.
Claim 7
Dependent Claim
23 words
The composition as defined in claim 7 wherein said continuous liquid phase is aqueous and said solid particles comprise an inorganic oxidizing salt.
Claim 8
Dependent Claim
19 words
The composition as defined in claim 8 wherein said solid particles include in addition a particulate oxidizable metallic fuel.
Claim 9
Dependent Claim
58 words
The composition as defined in claim 6 wherein said liquid phase is an aqueous solution, said particles comprise at least one particulate inorganic oxidizing salt and at least one particulate oxidizable metallic fuel and said thermoplastic particles are less than about 200 microns in size and have a particle density ranging from about 0.05 to about 0.005 gm/cc.
Claim 10
Dependent Claim
67 words
In a solid explosive composition containing an essentially solid continuous phase and a plurality of discrete gaseous globules dispersed in said continuous solid phase the improvement which comprises: as said plurality of gaseous globules discrete gas containing essentially monocellular hollow particles composed of a thermoplastic resin having a size less than about 200 microns in diameter and having a particle density of less than about 0.1 gm/cc.
Claim 11
Dependent Claim
106 words
In a slurry explosive comprising a continuous aqueous phase having dispersed therein a particulate inorganic oxidizing salt at least a portion thereof comprising ammonium nitrate, and a particulate oxidizable metal fuel, said explosive also containing an effective amount of a thickening agent to stabilize the dispersed particles, and also containing a plurality of discrete gaseous globules dispersed in said continuous liquid phase, the improvement which comprises: as said gaseous globules a plurality of discrete essentially monocellular gas containing hollow particles composed of a thermoplastic resin said particles being less than about 200 microns in diameter and having a particle density of less than about 0.1 gm/cc.
Claim 12
Dependent Claim
19 words
The composition as defined in claim 12 wherein the thermoplastic resin is a copolymer of vinylidene chloride and acrylonitrile.
Claim 13
Dependent Claim
24 words
The composition as defined in claim 12 wherein the gas containing monocellular particles have a density ranging from about 0.05 to about 0.005 gm/cc.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |