US3957893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of methyl chloroform
Assignee: OCCIDENTIAL ELECTROCHEMICALS Corp
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Filing: 1974-03-28
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Granted: 1976-05-18
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Expires: 1994-03-28
Abstract
Abstract The tendency for methyl chloroform to decompose in the presence of metals, particularly aluminum, is inhibited by a stabilizer mixture comprising an epoxide, a nitroalkane and either propylene glycol mono-methyl ether, dioxepane or a mixture thereof.
Inventors
- 👤 Norman L. Beckers
- 👤 Edward A. Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:49
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02854; C23G5/02883; C23G5/02887; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
66 words
A stabilized composition which consists essentially of methyl chloroform containing a. 0.1 to 2.0 percent by weight of a nitroalkane of from 1 to 3 carbon atoms, b. 0.05 to 0.5 percent by weight of an aliphatic epoxide selected from the group consisting of butylene oxide, propylene oxide, epichlorohydrin, and methyl glycidyl ether, and c. 0.1 to 3.0 percent by weight of propylene glycol monomethyl ether.
Claim 2
Dependent Claim
66 words
A stabilized composition which consists essentially of methyl chloroform containing a. 0.1 to 2.0 percent by weight of a nitroalkane of from 1 to 3 carbon atoms, b. 0.05 to 0.5 percent by weight of an aliphatic epoxide selected from the group consisting of butylene oxide, propylene oxide, epichlorohydrin, and methyl glycidyl ether, and c. 0.1 to 3.0 percent by weight of propylene glycol monomethyl ether.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the nitroalkane is nitromethane and the aliphatic epoxide is butylene oxide.
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) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |