Patent US4548660A successfully refreshed from Google Patents.
US4548660A
Expired / Lapsed
US
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Water-in-oil emulsion explosive
Assignee: Nippon Kayaku Co Ltd
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Filing: 1984-02-14
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Granted: 1985-10-22
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Expires: 2004-02-14
Abstract
Abstract Disclosed herein is an explosive of a water-in-oil emulsion type including an aqueous oxidizer solution, an oily material, an emulsifier and hollow microspheres, wherein the oily material forming the continuous phase of the emulsion comprises an oil component and at least one polymer selected from the group consisting of epoxy resin, unsaturated polyester resin, polybutene, polyisobutylene, petroleum resin, butadiene resin and ethylene vinyl acetate copolymer.
Inventors
- 👤 Yoshiyuki Ikeda
- 👤 Atsuo Inoue
- 👤 Kenjiro Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:09
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/14; C06B47/145
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
40 words
A water-in-oil type emulsion explosive containing an aqueous oxidizer solution, an oily material, an emulsifier, and hollow microspheres; wherein said oily material which forms a continuous phase of said emulsion comprises a mixture of an oil component and petroleum resin.
Claim 2
Dependent Claim
40 words
A water-in-oil type emulsion explosive containing an aqueous oxidizer solution, an oily material, an emulsifier, and hollow microspheres; wherein said oily material which forms a continuous phase of said emulsion comprises a mixture of an oil component and petroleum resin.
Claim 3
Dependent Claim
51 words
The water-in-oil type emulsion explosive of claim 1, comprising 50 to 95% by wt of the aqueous oxidizer solution, 1 to 10% by wt of the oily material, 0.5 to 7% by wt of the emulsifier and 0.5 to 20% by wt of hollow microspheres of said water-in-oil type emulsion explosive.
Claim 4
Dependent Claim
20 words
The water-in-oil type emulsion explosive of claim 1, wherein the molecular weight of said petroleum resin is 1,000 to 1,400.
Claim 5
Dependent Claim
28 words
The water-in-oil type emulsion explosive of claim 1, wherein the amount of said petroleum resin is 1 to 70% by weight of the amount of said oily material.
Claim 6
Dependent Claim
29 words
The water-in-oil type emulsion explosive of claim 1, wherein said oil component contains more than 30% by weight of a component which does not form an adduct with urea.
Claim 7
Dependent Claim
30 words
The water-in-oil type emulsion explosive of claim 1, wherein the amount of said emulsifier is 2.5 to 7% by weight of the total amount of said water-in-oil type emulsion explosive.
Claim 8
Dependent Claim
96 words
A water-in-oil type emulsion explosive containing: 50 to 95% by weight of an aqueous oxidizer solution, 1 to 10% by weight of an oily material, 2.5 to 7% by weight of sorbitan mono-oleate as an emulsifier, and 0.5 to 20% by weight of hollow glass microspheres; wherein said oily material which forms a continuous phase of said emulsion comprises a mixture of an oil component containing more than 30% by weight of a component which does not form an adduct with urea and a C 5 -petroleum resin having a molecular weight of 1,000 to 1,400.
Claim 9
Dependent Claim
96 words
A water-in-oil type emulsion explosive containing: 50 to 95% by weight of an aqueous oxidizer solution, 1 to 10% by weight of an oily material, 2.5 to 7% by weight of sorbitan mono-oleate as an emulsifier, and 0.5 to 20% by weight of hollow glass microspheres; wherein said oily material which forms a continuous phase of said emulsion comprises a mixture of an oil component containing more than 30% by weight of a component which does not form an adduct with urea and a C 5 -petroleum resin having a molecular weight of 1,000 to 1,400.
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) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |