US4299636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkoxy substituted aromatic stabilizers for crosslinked CMDB propellant
Assignee: Hercules LLC
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Filing: 1974-04-05
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Granted: 1981-11-10
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Expires: 1994-04-05
Abstract
Abstract A class of alkoxy substituted aromatic stabilizers is provided for double base propellant. These stabilizers are soluble in the energetic plasticizer employed in the propellant. These stabilizers are particularly suitable and useful in diisocyanate crosslinked composite modified double base propellant because they do not react with the crosslinking agents during preparation of the propellant and impart improved thermal stability to such propellants.
Inventors
- 👤 Kenneth O. Hartman
- 👤 James W. Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:21
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/006; C06B45/00; C06B45/04; C06B45/06; C06B45/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
In a diisocyanate crosslinked composite modified double base propellant containing a thermal stabilizer, the improvement comprising a thermal stabilizer comprising at least one alkoxy substituted aromatic compound having the formula ##STR2## wherein R is a benzene, biphenyl or naphthalene nucleus, R' is an alkyl radical having from 1 to 4 carbon atoms, R" is phenoxy or alkoxy substituted phenoxy in which the alkoxy substituent has from 1 to 4 carbon atoms, R''' is a benzene nucleus, and m is 1-3, n is 0-1, p is 1-6, and q is 1-2, said compound being employed in an amount of from about 0.2% to about 1.5% by weight, based on the weight of the propellant composition.
Claim 2
Dependent Claim
114 words
In a diisocyanate crosslinked composite modified double base propellant containing a thermal stabilizer, the improvement comprising a thermal stabilizer comprising at least one alkoxy substituted aromatic compound having the formula ##STR2## wherein R is a benzene, biphenyl or naphthalene nucleus, R' is an alkyl radical having from 1 to 4 carbon atoms, R" is phenoxy or alkoxy substituted phenoxy in which the alkoxy substituent has from 1 to 4 carbon atoms, R''' is a benzene nucleus, and m is 1-3, n is 0-1, p is 1-6, and q is 1-2, said compound being employed in an amount of from about 0.2% to about 1.5% by weight, based on the weight of the propellant composition.
Claim 3
Dependent Claim
14 words
The improved propellant of claim 1 in which the alkoxy substituted compound is 1,3,5-trimethoxybenzene.
Claim 4
Dependent Claim
14 words
The improved propellant of claim 1 in which the alkoxy substituted compound is 3,3'-dimethoxybiphenyl.
Claim 5
Dependent Claim
14 words
The improved propellant of claim 1 in which the alkoxy substituted compound is 1methoxy-3-phenoxybenzene.
Claim 6
Dependent Claim
14 words
The improved propellant of claim 1 in which the alkoxy substituted compound is 2-methoxynaphthalene.
Claim 7
Dependent Claim
14 words
The improved propellant of claim 1 in which the alkoxy substituted compound is 1,7-dimethoxynaphthalene.
Claim 8
Dependent Claim
15 words
The improved propellant of claim 1 in which the alkoxy substituted compound is bis(m-methoxyphenoxy) methane.
Claim 9
Dependent Claim
15 words
The improved propellant of claim 1 in which the alkoxy substituted compound is bis(m-methoxyphenoxy) pentane.
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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |