US4058420A
Expired / Lapsed
US
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Aqueous slurry explosives with colloidal hydrous metal oxide
Assignee: IMC Chemical Group Inc
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Filing: 1976-12-13
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Granted: 1977-11-15
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Expires: 1996-12-13
Abstract
Abstract Improved thickened aqueous slurry explosives of the type containing an inorganic oxidizing salt, a fuel, and water are disclosed, wherein the improvement includes the use of a colloidal hydrous metal oxide as a thickening agent.
Inventors
- 👤 Phillip Barnhard, IV
- 👤 Francis John Kieres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:50
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
31 words
An improved thickened aqueous slurry explosive of the type containing an inorganic oxidizing salt, a fuel, and water, wherein the improvement comprises a thickening amount of a colloidal hydrous metal oxide.
Claim 2
Dependent Claim
31 words
An improved thickened aqueous slurry explosive of the type containing an inorganic oxidizing salt, a fuel, and water, wherein the improvement comprises a thickening amount of a colloidal hydrous metal oxide.
Claim 3
Dependent Claim
34 words
The improved thickened aqueous slurry explosive of claim 1 wherein the colloidal hydrous metal oxide is employed in an amount sufficient to provide a viscosity of from about 6,000 cps to about 20,000 cps.
Claim 4
Dependent Claim
34 words
The improved thickened aqueous slurry explosive of claim 1 wherein the colloidal hydrous metal oxide is employed in an amount sufficient to provide a viscosity of from about 12,000 cps to about 16,000 cps.
Claim 5
Dependent Claim
20 words
The improved thickened aqueous slurry explosive of claim 2 wherein the colloidal hydrous metal oxide is colloidal alpha alumina monohydrate.
Claim 6
Dependent Claim
36 words
The improved thickened aqueous slurry explosive of claim 4 wherein the colloidal alpha alumina monohydrate is employed in the aqueous slurry explosive at a concentration of from about 0.04 wt % to about 5 wt %.
Claim 7
Dependent Claim
36 words
The improved thickened aqueous slurry explosive of claim 4 wherein the colloidal alpha alumina monohydrate is employed in the aqueous slurry explosive at a concentration of from about 0.1 wt % to about 3 wt %.
Claim 8
Dependent Claim
18 words
the improved thickened aqueous slurry explosive of claim 2 wherein the colloidal hydrous metal oxide is silica gel.
Claim 9
Dependent Claim
19 words
The improved thickened aqueous slurry explosive of claim 2 wherein the colloidal hydrous metal oxide is a natural clay.
Claim 10
Dependent Claim
15 words
The improved thickened aqueous slurry explosive of claim 8 wherein the natural clay is bentonite.
Claim 11
Dependent Claim
15 words
The improved thickened aqueous slurry explosive of claim 8 wherein the natural clay is attapulgite.
Claim 12
Dependent Claim
15 words
The improved thickened aqueous slurry explosive of claim 8 wherein the natural clay is kaolin.
Claim 13
Dependent Claim
26 words
the improved thickened aqueous slurry explosive of claim 2 further comprising a galactomannan gum and a crosslinker in amounts sufficient to gel the aqueous slurry explosive.
Claim 14
Dependent Claim
43 words
The improved thickened aqueous slurry explosive of claim 12 wherein said galactomannan gum is guar gum and said crosslinker is selected from the group consisting of sulfate, nitrate, dichromate and chloride salts of chromium, iron, aluminum, zinc, potassium and tin and potassium pyroantimonate.
Claim 15
Dependent Claim
49 words
The improved thickened aqueous slurry explosive of claim 12 wherein said guar gum is employed in the aqueous slurry explosive at a concentration of from about 0.1 to about 3 wt % and said crosslinker is employed at a concentration of from about 0.05 to about 2 wt %.
Claim 16
Dependent Claim
49 words
The improved thickened aqueous slurry explosive of claim 12 wherein said guar gum is employed in the aqueous slurry explosive at a concentration of from about 0.03 to about 1 wt % and said crosslinker is employed as a concentration of from about 0.1 to about 1 wt %.
Claim 17
Independent Claim
60 words
A method for preparing an improved thickened aqueous slurry explosive, comprising mixing an oxidizing salt, an organic fuel, an inorganic fuel, water and a thickening amount of a colloidal hydrous metal oxide, thereby forming a homogeneous thickened mixture; then blending into said homogeneous thickened mixture a galactomannan gum and a crosslinker in amounts sufficient to gel said homogeneous thickened mixture.
Claim 18
Independent Claim
60 words
A method for preparing an improved thickened aqueous slurry explosive, comprising mixing an oxidizing salt, an organic fuel, an inorganic fuel, water and a thickening amount of a colloidal hydrous metal oxide, thereby forming a homogeneous thickened mixture; then blending into said homogeneous thickened mixture a galactomannan gum and a crosslinker in amounts sufficient to gel said homogeneous thickened mixture.
Claim 19
Dependent Claim
66 words
The method of claim 16 wherein the colloidal hydrous metal oxide is employed in an amount sufficient that the viscosity of the homogeneous thickened mixture is from about 6,000 cps to about 20,000 cps, the galactomannan gum in guar gum and the crosslinker is selected from the group consisting of sulfate, nitrate, dichromate chloride salts of chromium, iron, aluminum, zinc, potassium, and tin and potassium pyroantimonate.
Claim 20
Dependent Claim
46 words
The method of claim 16 wherein the colloidal hydrous metal oxide is employed in an amount sufficient that the viscosity of the homogeneous thickened mixture is from about 12,000 cps to about 16,000 cps, the galactomannan gum is guar gum and the crosslinker is potassium pyroantimonate.
Claim 21
Dependent Claim
16 words
The method of claim 17 wherein the colloidal hydrous metal oxide is colloidal alpha alumina monohydrate.
Claim 22
Dependent Claim
63 words
The method of claim 19 wherein the colloidal alpha alumina monohydrate is employed at a concentration of from about 0.04 wt % to about 5 wt %, the guar gum is employed at a concentration of from about 0.1 wt % to about 3 wt %, and the crosslinker is employed at a concentration of from about 0.05% to about 2 wt %.
Claim 23
Dependent Claim
65 words
The method of claim 19 wherein the colloidal alpha alumina monohydrate is employed at a concentration of from about 0.1 wt % to about 3 wt %, the guar gum is employed at a concentration of from about 0.3 wt % to about 1 wt %, and the crosslinker is employed at a concentration of from about 0.1 wt % to about 1 wt %.
Claim 24
Dependent Claim
14 words
The method of claim 17 wherein the colloidal hydrous metal oxide is silica gel.
Claim 25
Dependent Claim
15 words
The method of claim 17 wherein the colloidal hydrous metal oxide is a natural clay.
Claim 26
Dependent Claim
11 words
The method of claim 23 wherein the natural clay is bentonite.
Claim 27
Dependent Claim
11 words
The method of claim 23 wherein the natural clay is attapulgite.
Claim 28
Dependent Claim
11 words
The method of claim 23 wherein the natural clay is kaolin.
References Cited (Backward Citations)
US3212944A
Cited
US3223478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |