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US3959397A
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Stabilization of 1,1,1-trichloroethane with a three component system
Assignee: Dynamit Nobel AG
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Filing: 1973-10-23
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Granted: 1976-05-25
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Expires: 1993-10-23
Abstract
Abstract A stabilized 1,1,1-trichloroethane composition containing, as stabilizer therefor, a mixture consisting of a nitrile, 1,4-dioxane, and nitromethane.
Inventors
- 👤 Hermann Richtzenhain
- 👤 Rudolf Stephan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:24
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
28 words
A stabilized 1,1,1-trichloroethane composition consisting essentially of 1,1,1-trichloroethane and 0.1 to 1.0 wt. % methoxyacetonitrile, 0.5 to 3.0 wt. % 1,4-dioxane and 0.2 to 1.0 wt. % nitromethane.
Claim 2
Dependent Claim
28 words
A stabilized 1,1,1-trichloroethane composition consisting essentially of 1,1,1-trichloroethane and 0.1 to 1.0 wt. % methoxyacetonitrile, 0.5 to 3.0 wt. % 1,4-dioxane and 0.2 to 1.0 wt. % nitromethane.
Claim 3
Dependent Claim
20 words
A stabilized composition according to claim 1 wherein the total amount of stabilizer is between λ.0 and 5 wt. %.
References Cited (Backward Citations)
DE1197068B
Cited
US3265747A
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US3549715A
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US3049571A
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US3590088A
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US3505415A
Cited
US3565811A
Cited
US3536766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |