US4420349A
Expired / Lapsed
US
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Emulsion explosive compositions and method of preparation
Assignee: PPG Architectural Coatings Canada Inc
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Filing: 1983-01-10
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Granted: 1983-12-13
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Expires: 2003-01-10
Abstract
Abstract A two-component emulsion explosive composition is provided consisting of a continuous oil/fuel phase and a discontinuous aqueous oxidizer salt phase and, as an emulsifier, a dimer acid glyceride wherein the dimer acid has a carbon atom chain length of C18-C60. The composition demonstrates superior properties of long period storage stability and sensitivity.
Inventors
- 👤 Howard A. Bampfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:22
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14; C06B47/145
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
60 words
A thermally and storage stable water-in-oilemulsion explosive of putty-like consistency comprising a water-immiscible liquid organic fuel continuous phase, an aqueous inorganic oxidizer salt solution discontinuous phase and from 0.5 to 4% by weight of the total composition of a dimer acid glyceride as emulsifier wherein the dimer acid has a carbon atom chain length of C 18 -C 60 .
Claim 2
Dependent Claim
60 words
A thermally and storage stable water-in-oilemulsion explosive of putty-like consistency comprising a water-immiscible liquid organic fuel continuous phase, an aqueous inorganic oxidizer salt solution discontinuous phase and from 0.5 to 4% by weight of the total composition of a dimer acid glyceride as emulsifier wherein the dimer acid has a carbon atom chain length of C 18 -C 60 .
Claim 3
Dependent Claim
24 words
A composition as claimed in claim 1 wherein the dimer acid glyceride emulsifier comprises from 0.5 to 1% by weight of the total composition.
Claim 4
Dependent Claim
23 words
A composition as claim in claim 1 also containing sufficient gas bubbles or void-containing material to render it detonable by blasting cap initiation.
Claim 5
Dependent Claim
33 words
A composition as claimed in claim 1 wherein the said dimer acid glyceride emulsifier comprises the reaction product of one equivalent weight of dimer acid to from 0.4 to 1 mole of glycerol.
Claim 6
Dependent Claim
28 words
A composition as claimed in claim 4 wherein the dimer acid and glycerol are heated together at 180° C. for 30 minutes in the presence of a catalyst.
Claim 7
Dependent Claim
46 words
A composition as claimed in claim 1 wherein the liquid organic fuel is selected from the group consisting of parafinic, olefinic, aromatic and naphthenic hydrocarbons, petroleum waxes, microcrystalline wax, paraffin wax, mineral and animal wax, petroleum, mineral and vegetable oils, dinitrotoluene, nitroxylenes, and mixtures of these.
Claim 8
Dependent Claim
28 words
A composition as claimed in claim 1 wherein the aqueous inorganic salt is selected from ammonium nitrate, alkali or alkaline earth metal nitrates and perchlorates and mixtures thereof.
Claim 9
Dependent Claim
26 words
A composition as claimed in claim 1 wherein up to 50% by volume of the said dimer acid glyceride emulsifier is replaced by a conventional emulsifier.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |