US3960946A
Expired / Lapsed
US
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Process for the manufacture of oxalyl dihydrazide and the use of same as a coolant in gas generating compositions
Assignee: ATK Launch Systems LLC
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Filing: 1974-09-10
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Granted: 1976-06-01
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Expires: 1994-09-10
Abstract
Abstract A curable homogeneous gas-generating composition composed essentially of oxalyl dihydrazide coolant combined with: (a) a perchlorate oxidizer selected from the group consisting of ammonium perchlorate, the alkali metal perchlorates, and the alkali earth metal perchlorates, (b) a combustible fuel binder, and (c) propellant adjuvants.
Inventors
- 👤 Ivan L. Dewitt
- 👤 Eugene Pacanowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:10
CPC Classifications
C; C07; C07C; C07C243/00; C06; C06B; C06B23/00; C06B23/04; C06B47/00; C06B47/02; C06B47/08; C06D; C06D5/00; C06D5/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
31 words
A process for the preparation of oxalyl dihydrazide which comprises reacting diethyloxalate and hydrazine at a temperature between about 30°C and about 70°C in a medium consisting substantially of distilled water.
Claim 2
Dependent Claim
31 words
A process for the preparation of oxalyl dihydrazide which comprises reacting diethyloxalate and hydrazine at a temperature between about 30°C and about 70°C in a medium consisting substantially of distilled water.
Claim 3
Dependent Claim
17 words
A process as defined in claim 1 wherein the temperature is from about 40°C to about 60°C.
Claim 4
Dependent Claim
20 words
A process as defined in claim 2 wherein hydrazine hydrate is the source of the hydrazine in the reaction mixture.
Claim 5
Dependent Claim
32 words
In a method for making oxalyl dihydrazide wherein a dialkyl oxalate is reacted with hydrazine in a solvent medium, the improvement comprising conducting said reaction in a substantially distilled water solvent medium.
Claim 6
Dependent Claim
32 words
In a method for making oxalyl dihydrazide wherein a dialkyl oxalate is reacted with hydrazine in a solvent medium, the improvement comprising conducting said reaction in a substantially distilled water solvent medium.
Claim 7
Dependent Claim
22 words
The improved method of claim 4 wherein diethyloxalate is reacted with hydrazine at a temperature of from about 40°C to about 60°C.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |