US3763048A
Expired / Lapsed
US
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Stabilization of halogenated hydrocarbons
Assignee: Adeka Corp
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Filing: 1971-05-04
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Granted: 1973-10-02
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Expires: 1991-05-04
Abstract
Abstract This invention relates to the stabilization of halogenated hydrocarbons, and, more particularly, to the stabilization of methyl chloroform by the addition thereto of at least one sulfurcontaining heterocyclic compound selected from 1,3-dithiolane, 1,3-oxathiolane and certain thiirane compounds in the presence or absence of at least one auxilliary stabilizing additive selected from acetonitrile, nitromethane, glycidol, 1,3-dioxolane or 1,4dioxane.
Inventors
- 👤 A Nishihara
- 👤 S Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:39
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
37 words
Methyl chloroform stabilized by having dissolved therein a stabilizing amount of at least one sulfur-containing heterocyclic compound selected from the group consisting of 1,3-dithiolane, 1, 3-oxathiolane, 1,2-cyclopentylene sulfide, 1,2-cyclohexylene sulfide and thiirane compounds having the general formula:
Claim 2
Dependent Claim
20 words
Methyl chloroform stabilized by having dissolved therein a stabilizing amount of at least one thiirane compound having the general formula:
Claim 3
Dependent Claim
49 words
Methyl chloroform stabilized by having dissolved therein a stabilizing amount of at least one sulfur-containing heterocyclic compound selected from the group consisting of 1,3-dithiolane and 1,3-oxathiolane, and an effective amount of at least one auxilliary stabilizing additive selected from the group consisting of acetonitrile, nitromethane, glycidol, 1,3-dioxolane, and 1,4-dioxane.
Claim 4
Dependent Claim
35 words
Methyl chloroform stabilized by having dissolved therein a stabilizing amount of 1,2-cyclopentylene sulfide and an effective amount of at least one auxilliary stabilizing additive selected from the group consisting of acetonitrile, nitromethane, glycidol, and 1,3-dioxolane.
Claim 5
Dependent Claim
24 words
Methyl chloroform stabilized by having dissolved therein a stabilizing amount of 1,2-cyclohexylene sulfide, and an effective amount of 1,4-dioxane as an auxilliary stabilizing additive.
Claim 6
Dependent Claim
33 words
Methyl chloroform stabilized by having dissolved therein a stabilizing amount of 1,2-epithio-3-hydroxypropane and an effective amount of at least one auxilliary stabilizing additive selected from the group consisting of acetonitrile, glycidol and 1,3-dioxolane.
Claim 7
Dependent Claim
32 words
Methyl chloroform stabilized by having dissolved therein a stabilizing amount of 1,2-epithio-3-chloropropane and an effective amount of at least one auxilliary stabilizing additive selected from the group consisting of nitromethane and 1,4-dioxane.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |