US4315784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-in-oil emulsion explosive composition with imidazoline derivative emulsifier
Assignee: NOF Corp
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Filing: 1979-11-27
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Granted: 1982-02-16
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Expires: 1999-11-27
Abstract
Abstract A water-in-oil emulsion explosive composition consisting of ammonium nitrate or a mixture of ammonium nitrate and the other inorganic oxidizer salts, water, oil and/or wax, 1-hydroxyethyl-2-imidazoline derivative as an emulsifier and at least one of hollow microsphere and bubbles generated from a chemical foaming agent is excellent in the emulsion stability in storage, low temperature detonability and explosion reactivity.
Inventors
- 👤 Katsuhide Hattori
- 👤 Yoshiaki Fukatsu
- 👤 Masao Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:20
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14; C06B47/145
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A water-in-oil emulsion explosive composition consisting of (a) ammonium nitrate or a mixture of ammonium nitrate with at least one other inorganic oxidizer salt, (b) water, (c) an oil and/or wax, (d) an emulsifier of 1-hydroxyethyl-2-imidazoline derivative represented by the following general formula ##STR2## wherein R represents an alkyl or alkenyl group having 10-26 carbon atoms, and (e) at least one of bubbles generated from a chemical foaming agent and hollow microspheres.
Claim 2
Dependent Claim
72 words
A water-in-oil emulsion explosive composition consisting of (a) ammonium nitrate or a mixture of ammonium nitrate with at least one other inorganic oxidizer salt, (b) water, (c) an oil and/or wax, (d) an emulsifier of 1-hydroxyethyl-2-imidazoline derivative represented by the following general formula ##STR2## wherein R represents an alkyl or alkenyl group having 10-26 carbon atoms, and (e) at least one of bubbles generated from a chemical foaming agent and hollow microspheres.
Claim 3
Dependent Claim
28 words
A water-in-oil emulsion explosive composition as claimed in claim 1, wherein the other inorganic oxidizer salts are sodium nitrate, potassium nitrate, calcium nitrate, sodium chlorate and sodium perchlorate.
Claim 4
Dependent Claim
27 words
A water-in-oil emulsion explosive composition as claimed in claim 1, wherein the oil and/or wax is light oil, heavy oil, paraffin wax, petrolatum wax or microcrystalline wax.
Claim 5
Dependent Claim
21 words
A water-in-oil emulsion explosive composition as claimed in claim 1, wherein said emulsifier is 1-hydroxyethyl-2-alkyl(rice bran oil)-2-imidazoline, 1-hydroxyethyl-2-alkyl-(coconut oil)-imidazoline or 1-hydroxyethyl-2-alkyl(tallow)-2-imidazoline.
Claim 6
Dependent Claim
29 words
A water-in-oil emulsion explosive composition as claimed in claim 1, wherein the hollow microsphere is glass hollow microsphere, synthetic resin hollow microsphere, silica hollow microsphere or shirasu hollow microsphere.
Claim 7
Dependent Claim
31 words
A water-in-oil emulsion explosive composition as claimed in claim 1, wherein the chemical foaming agent is a mixture of alkali metal borohydride or sodium nitrite with urea, N,N'-dinitrosopentamethylenetetramine, azodicarbonamide or azobisisobutyronirile.
Claim 8
Dependent Claim
77 words
A water-in-oil emulsion explosive composition as claimed in claim 1, wherein the amount of ammonium nitrate or the mixture of ammonium nitrate and the other inorganic oxidizer salts is 50-90% by weight, that of water is 5-20% by weight, that of the oil and/or wax is 2-7% by weight, that of the emulsifier is 1-5% by weight, that of the hollow miscrosphere is 1-10% by weight and that of the chemical foaming agent is 0.1-2% by weight.
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) | 1985-02-15 | 1985-08-17 | 1986-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-15 | 1989-08-17 | 1990-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-15 | 1993-08-17 | 1994-02-16 | $7700.00 | Window Closed / Lapsed |