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US4069265A
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Stabilization of 1,1,1-trichloroethane with a four component system
Assignee: Dynamit Nobel AG
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Filing: 1976-03-01
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Granted: 1978-01-17
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Expires: 1996-03-01
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
2026-11-01 22:06
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
A stabilized 1,1,1-trichloroethane composition consisting essentially of 1,1,1-trichloroethane, 0.05 to 2.0 weight percent of nitrile, 0.05 to 3.0 weight percent of 1,4-dioxane, 0.1 to 2.0 weight percent nitromethane and ethylenediamine, said ethylenediamine being present in an amount of at least 0.01 weight percent, based upon the weight of said 1,1,1-trichloroethane.
Claim 2
Dependent Claim
50 words
A stabilized 1,1,1-trichloroethane composition consisting essentially of 1,1,1-trichloroethane, 0.05 to 2.0 weight percent of nitrile, 0.05 to 3.0 weight percent of 1,4-dioxane, 0.1 to 2.0 weight percent nitromethane and ethylenediamine, said ethylenediamine being present in an amount of at least 0.01 weight percent, based upon the weight of said 1,1,1-trichloroethane.
Claim 3
Dependent Claim
35 words
A stabilized 1,1,1-trichloroethane composition according to claim 1 wherein the total content of said nitrile, said 1,4-dioxane, said nitromethane and said ethylenediamine is between 0.3 and 7 weight percent, based upon the weight of 1,1,1-trichloroethane.
Claim 4
Dependent Claim
36 words
A stabilized 1,1,1-trichloroethane composition according to claim 1 wherein the total content of said nitrile, said 1,4-dioxane, said nitromethane and said ethylenediamine is between 1.0 and 5 weight percent, based upon the weight of said 1,1,1-trichloroethane.
Claim 5
Dependent Claim
29 words
A stabilized 1,1,1-trichloroethane composition according to claim 1 wherein said ethylenediamine is present in an amount of 0.01 to 0.1 weight percent, based upon the weight of said 1,1,1,trichloroethane.
Claim 6
Dependent Claim
48 words
A stabilized 1,1,1-trichloroethane composition according to claim 1 wherein said nitrile is present in an amount of 0.1 to 1 weight percent, said 1,4-dioxane is present in amount of 0.5 to 3.0 weight percent, and said nitromethane is present in an amount of 0.2 to 1.0 weight percent.
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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |