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US3617407A
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US
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Aqueous slurry explosive containing a thickener of cross-linked galactomannan with psyllium flour
Assignee: PPG Architectural Coatings Canada Inc
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Filing: 1969-09-15
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Granted: 1971-11-02
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Expires: 1989-09-15
Abstract
Abstract A thickening agent for an aqueous slurry explosive composition comprises the combination of a cross-linked galactomannan with psyllium flour in specific proportions, which thickener provides good fluidity and reduced tackiness.
Inventors
- 👤 Joseph Francis Mclean Craig
- 👤 Errol Linton Falconer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:30
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
20 words
An explosive composition as claimed in claim 1 wherein the ratio of galactomannan to psyllium flour from 1:10 to 2:1.
Claim 2
Dependent Claim
86 words
An aqueous slurry explosive composition comprising from about 15 percent to about 83 percent by weight of an inorganic oxygen-supplying salt, from about 12 percent to about 30 percent by weight of a solvent or carrier for the inorganic oxygen-supplying salt, from about 5 percent to about 55 percent by weight of a fuel and from about 0.2 percent to about 2.5 percent by weight of a thickener, said thickener comprising the combination of cross-linked galactomannan to psyllium flour of from about 1:20 to about 5:1.
Claim 3
Dependent Claim
31 words
An explosive composition as claimed in claim 1 wherein the inorganic oxygen-supplying salt is selected from the group consisting of the nitrates of ammonium, sOdium, potassium, barium, calcium and mixtures thereof.
Claim 4
Dependent Claim
56 words
An explosive composition as claimed in claim 1 wherein the fuel is selected from the group consisting of finely divided aluminum, finely divided aluminum alloys, silicon, ferrosilicon, ferrophosphorus, finely divided carbonaceous nonexplosives, oleaginous hydrocarbons, particulate trinitrotoluene, particulate pentaerythritol tetranitrate, particulate cylotrimethylenetrinitramine, particulate mixtures of trinitrotoluene and cyclotrimethylenetrinitramine, particulate pentolite, smokeless powder, nitrocellulose, nitrostarch and mixtures thereof.
Claim 5
Dependent Claim
20 words
An explosive composition as claimed in claim 1 wherein the solvent or carrier for the inorganic oxygen-supplying salt is water.
Claim 6
Dependent Claim
44 words
An explosive composition as claimed in claim 6 wherein less than half of the water is replaced by a polar solvent for the inorganic oxygen-supplying salt selected from the group consisting of formamide, dimethyl sulfoxide, the lower glycols, the lower alcohols and mixtures thereof.
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 |