Patent US4405534A successfully refreshed from Google Patents.
US4405534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of plastic-bonded explosive substances
Assignee: Individual
•
Filing: 1981-03-05
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Granted: 1983-09-20
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Expires: 2001-03-05
Abstract
Abstract A process for the production of plastic-bonded explosive substances wherein the binder is applied from aqueous dispersion is characterized in that polyurethanes applied in the absence of organic solvents are used as binder and in that the granulates obtained are dried and then compressed. Explosive substances obtained by the process are also provided.
Inventors
- 👤 Friedrich-Ulf Deisenroth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:42
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B21/00; C06B21/0008; C06B21/0025; F; F21; F21K; F21K5/00; F21K5/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
54 words
A process for producing plastic bonded explosives consisting of the steps of providing a crystalline water insoluble explosive, and a fully reacted aqueous polyurethane dispersion substantially free of organic solvent, incorporating said explosive into said dispersion to form a uniform mixture thereof, coagulating said mixture to form granulates thereof, and drying said resultant granulates.
Claim 2
Dependent Claim
54 words
A process for producing plastic bonded explosives consisting of the steps of providing a crystalline water insoluble explosive, and a fully reacted aqueous polyurethane dispersion substantially free of organic solvent, incorporating said explosive into said dispersion to form a uniform mixture thereof, coagulating said mixture to form granulates thereof, and drying said resultant granulates.
Claim 3
Dependent Claim
13 words
A process as claimed in claim 1, wherein said dried granulates are cold-pressed.
Claim 4
Dependent Claim
27 words
A process as claimed in claims 1 or 2, wherein said polyurethane binder dispersion includes 0 to 30%, based on said binder, of a water-soluble polymeric plasticizer.
Claim 5
Dependent Claim
37 words
A process as claimed in any of claims 1, 2 or 3, wherein said polyurethane binder dispersion includes 0 to 50% based on said binder, of a water-soluble monomeric or polymeric, thermally crosslinkable or film-forming reinforcing resin.
Claim 6
Dependent Claim
21 words
A process as claimed in claim 3, wherein said plasticizer comprises polyethylene glycols having a molecular weight of more than 5000.
Claim 7
Dependent Claim
23 words
A process as claimed in claim 3, wherein said plasticizer comprises polyvinyl methyl ether having a molecular weight of from 5000 to 10,000.
Claim 8
Dependent Claim
24 words
A process as claimed in claim 3, wherein said plasticizer is used in a quantity of from 5 to 15%, based on said binder.
Claim 9
Dependent Claim
22 words
A process as claimed in any one of claims 3 or 6, wherein said binder is coagulated with water-soluble polyvinyl methyl ether.
Claim 10
Dependent Claim
38 words
A process as claimed in any one of claims 1, 2, 3, 6 or 7, wherein the mixture of crystalline explosive and binder, is coagulated by heating and the granulates formed are separated from the water and dried.
Claim 11
Dependent Claim
25 words
A process as claimed in claim 4, wherein said reinforcing resin is selected from the group consisting of polyethylene/maleic acid anhydride copolymers and epoxide resins.
Claim 12
Dependent Claim
25 words
A process as claimed in claim 10, wherein said reinforcing resin is used in a quantity of from 2 to 20%, based on the binder.
Claim 13
Dependent Claim
21 words
A process as claimed in any one of claims 4, 9 or 10, wherein said binder is coagulated with phenol-formaldehyde resins.
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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |