Patent DE568573C successfully refreshed from Google Patents.
US4090893A
Expired / Lapsed
US
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Bonding agent system for improved propellant aging and low temperature physical properties
Assignee: United States Department of the Army
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Filing: 1977-10-11
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Granted: 1978-05-23
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Expires: 1997-10-11
Abstract
Abstract A new combination of bonding agents when employed in hydroxy-terminated polybutadiene propellant compositions yields greatly improved high temperature aging characteristics and greatly improved low temperature physical properties for the compositions. The combination or bonding agent system consists of MT4 (reaction product of 2.0 moles of tris 1(2 methylaziridinyl)phosphine oxide, 0.7 mole adipic acid, and 0.3 mole tartaric acid); HX752 (bis isophthaloyl 1(2 methyl)aziridine); and BIDE (butyliminodiethanol) in a weight percent range of the propellant composition of 0.10% to 0.20%, 0.10% to 0.20% and 0.02% to 0.05% respectively.
Inventors
- 👤 Marjorie T. Cucksee
- 👤 Henry C. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
113 words
A bonding agent system for use in a hydroxy-terminated polybutadiene propellant composition that is curable with a diisocyanate curing agent and that contains a high solids loading of aluminum metal fuel and ammonium perchlorate oxidizer, said bonding agent system consisting of the reaction product of 2.0 moles of tris 1(2 methyl aziridinyl)phosphine oxide, 0.7 mole adipic acid, and 0.3 mole tartaric acid in an amount from about 0.10 to about 0.20 weight percent of said propellant composition; bis isophthaloyl 1(2 methyl)aziridine in an amount from about 0.10 to about 0.20 weight percent of said propellant composition; and butyliminodiethanol in an amount from about 0.02 to about 0.05 weight percent of said propellant composition.
Claim 2
Dependent Claim
113 words
A bonding agent system for use in a hydroxy-terminated polybutadiene propellant composition that is curable with a diisocyanate curing agent and that contains a high solids loading of aluminum metal fuel and ammonium perchlorate oxidizer, said bonding agent system consisting of the reaction product of 2.0 moles of tris 1(2 methyl aziridinyl)phosphine oxide, 0.7 mole adipic acid, and 0.3 mole tartaric acid in an amount from about 0.10 to about 0.20 weight percent of said propellant composition; bis isophthaloyl 1(2 methyl)aziridine in an amount from about 0.10 to about 0.20 weight percent of said propellant composition; and butyliminodiethanol in an amount from about 0.02 to about 0.05 weight percent of said propellant composition.
Claim 3
Dependent Claim
76 words
The bonding agent system of claim 1 wherein said bonding agent system consists of the reaction product of 2.0 moles of tris 1(2 methyl aziridinyl)phosphine oxide, 0.7 mole adipic acid, and 0.3 mole tartaric acid in an amount of about 0.15 weight percent of said propellant composition; isophthaloyl 1(2 methyl)aziridine in an amount of about 0.15 weight percent of said propellant composition; and butyliminodiethanol in an amount of about 0.02 weight percent of said propellant composition.
References Cited (Backward Citations)
US3974004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |