US3977922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capsulated explosive compositions
Assignee: NOF Corp
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Filing: 1973-09-04
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Granted: 1976-08-31
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Expires: 1993-09-04
Abstract
Abstract A capsulated explosive composition comprising a high molecular weight compound forming the capsule wall and an explosive forming the core is high in power and low in sensitivity and vapor pressure, and can be easily handled.
Inventors
- 👤 Kazuhiro Inoue
- 👤 Hiroshi Sato
- 👤 Fumio Matsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:03
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/18; C06B45/20; C06B45/22; C06B45/28; Y; Y10; Y10S; Y10S149/00; Y10S149/11
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
63 words
A microencapsulated explosive composition consisting of a high molecular weight compound forming the capsule wall and at least one explosive liquid compound selected from the group consisting of glycerine trinitrate, glycerine dinitrate, ethylene glycol dinitrate, diethylene glycol dinitrate, triethylene glycol dinitrate, trimethylene glycol dinitrate, diglycerine tetranitrate, monochlorohydrin dinitrate, acetylglycerine dinitrate, 1,2,3-butanetriol trinitrate, 2-nitro-2-oxymethyl-1,3-propanediol trinitrate, 2-methyl-2- oxymethyl-1,3-propanediol trinitrate, nitrobenzene and tetranitromethane, forming the core.
Claim 2
Dependent Claim
63 words
A microencapsulated explosive composition consisting of a high molecular weight compound forming the capsule wall and at least one explosive liquid compound selected from the group consisting of glycerine trinitrate, glycerine dinitrate, ethylene glycol dinitrate, diethylene glycol dinitrate, triethylene glycol dinitrate, trimethylene glycol dinitrate, diglycerine tetranitrate, monochlorohydrin dinitrate, acetylglycerine dinitrate, 1,2,3-butanetriol trinitrate, 2-nitro-2-oxymethyl-1,3-propanediol trinitrate, 2-methyl-2- oxymethyl-1,3-propanediol trinitrate, nitrobenzene and tetranitromethane, forming the core.
Claim 3
Dependent Claim
23 words
The explosive composition as claimed in claim 1, wherein said explosive consists of a gelatinized product of the explosive liquid compound with nitrocellulose.
Claim 4
Dependent Claim
26 words
The explosive composition as claimed in claim 1, wherein the amount of said explosive is 80--95% by weight based on the total weight of the composition.
Claim 5
Dependent Claim
28 words
The explosive composition as claimed in claim 1, wherein said high molecular compound is a thermosetting resin selected from the group consisting of polyurethane, polyurea and epoxy resin.
Claim 6
Dependent Claim
27 words
The explosive composition as claimed in claim 1, wherein said high molecular compound is a thermoplastic resin selected from the group consisting of polystyrene and polyvinyl alcohol.
Claim 7
Dependent Claim
18 words
The explosive composition of claim 1, wherein fine granular capsules thereof are of a size of about 300μ.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |