US3781179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositie propellants with a difunctional ballistic modifier curing agent
Assignee: Individual
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Filing: 1972-08-04
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Granted: 1973-12-25
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Expires: 1992-08-04
Abstract
Abstract Disclosed is the liquid, olefinic ferrocene derivative derived from vinyl magnesium chloride and diacetyl ferrocene, which derivative can be co-cured with hydroxy terminated polybutadiene polymers (HTPB) to yield a polymeric binder system for propellants having a chemically bound ballistic modifier as an integral part of the binder. The ferrocene derivative is a difunctional compound having two hydroxyl groups per molecule. Curing of the HTPB and the dihydroxy-ferrocene compound is accomplished by diisocyanates which is added in sufficient quantity so that all the hydroxyl groups of the HTPB and the ferrocene derivative are reacted.
Inventors
- 👤 C Huskins
- 👤 A Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:32
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/007; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C07; C07F; C07F17/00; C07F17/02; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/38; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G18/677; C08G18/69
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
The propellant composition of claim 1 comprised of said liquid ferrocene derivative in amounts from about 5 to about 20 weight percent of said propellant composition; of said ammonium perchlorate oxidizer in amounts from about 60 to about 72 weight percent of said propellant composition; of said hydroxyl polybutadiene polymers in amounts from about 5 to about 20 weight percent of said propellant compositions; of said aluminum metal fuel in amounts from about 5 to about 20 weight percent of said propellant composition; and of said diisocyanate crosslinking agent from about 0.5 to about 2.0 weight percent of said propellant composition.
Claim 2
Dependent Claim
95 words
The propellant composition of claim 2 comprised of said liquid ferrocene derivative in an amount of about 8.0 weight percent of said propellant composition; of said ammonium perchlorate in an amount of about 70 weight percent of said propellant composition; of said hydroxyl polybutadiene polymers in an amount of about 10 weight percent of said propellant composition; of said aluminum metal fuel in an amount of about 10 weight percent of said propellant composition; and wherein said diisocyanate crosslinking agent is dimeryl diisocyanate in an amount of about 2 weight percent of said propellant composition.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |