Patent US4347189A successfully refreshed from Google Patents.
US4347189A
Expired / Lapsed
US
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Process for separating 1,4 cineoles from 1,8 cineoles
Assignee: Mobil Oil AS
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Filing: 1981-05-11
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Granted: 1982-08-31
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Expires: 2001-05-11
Abstract
Abstract A method of separating 1,4 cineole from a mixture containing 1,4 and 1,8 cineoles wherein the mixture is contacted with a zeolite having a constraint index of from 0.2 to 12 and having port sizes of approximately 6.7-7.0 angstroms. This causes the 1,4 cineole to be sorbed into the zeolite while the 1,8 cineole is excluded. The zeolite is then separated from the 1,8 cineole so that the 1,4 cineole may be desorbed from the zeolite. This desorbtion may be accomplished by heating the zeolite to a temperature above the boiling point of the cineole or by liquid phase displacement.
Inventors
- 👤 Theodore P. Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:47
CPC Classifications
C; C07; C07D; C07D307/00; C07D311/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
61 words
A method of separating 1,4 cineole from a mixture comprising 1,4 and 1,8 cineoles comprising: contacting said mixture with a zeolite having a constraint index of from 0.2 to 12 and port sizes of approximately 6.7-7.0 angstroms such that said 1,4 cineole is sorbed into said zeolite; separating said zeolite and said mixture; and desorbing said 1,4 cineole from said zeolite.
Claim 2
Independent Claim
61 words
A method of separating 1,4 cineole from a mixture comprising 1,4 and 1,8 cineoles comprising: contacting said mixture with a zeolite having a constraint index of from 0.2 to 12 and port sizes of approximately 6.7-7.0 angstroms such that said 1,4 cineole is sorbed into said zeolite; separating said zeolite and said mixture; and desorbing said 1,4 cineole from said zeolite.
Claim 3
Dependent Claim
19 words
The method of claim 1, wherein said zeolite is selected from the group consisting of mordenite, ptilolite and NaD.
Claim 4
Dependent Claim
34 words
The method of claim 1, wherein said zeolite is selected from the group consisting of Linde Type L, Mazzite, ZSM-4, Omega, Gmelinite, S zeolite, ZSM-5, ZSM-11, Faujasite, Linde Type X and Linde Type Y.
Claim 5
Dependent Claim
16 words
The method of claim 1, 2 or 3 wherein said desorbing is a vapor phase desorption.
Claim 6
Dependent Claim
16 words
The method of claim 1, 2 or 3 wherein said desorbing is a liquid phase desorption.
Claim 7
Dependent Claim
29 words
The method of claim 5 wherein said liquid phase desorption is accomplished by immersing said zeolite in an alcohol selected from the group consisting of methanol, ethanol and isopropanol.
Claim 8
Dependent Claim
13 words
The method of claim 1 wherein said mixture further comprises a hydrocarbon solvent.
Claim 9
Dependent Claim
20 words
The method of claim 1 wherein said mixture is a process stream obtained during production of 1,4 and 1,8 cineoles.
Claim 10
Dependent Claim
16 words
The method of claim 1 wherein said zeolite is contacted with said mixture as a batch.
Claim 11
Dependent Claim
14 words
The method of claim 1 wherein said zeolite is present as a fixed bed.
Claim 12
Dependent Claim
14 words
The method of claim 1 wherein said zeolite is present as a fluidized bed.
Claim 13
Dependent Claim
14 words
The method of claim 10 or 11 wherein said method is a continuous process.
Claim 14
Dependent Claim
19 words
The method of claim 1 wherein prior to contact with said zeolite, said cineoles are in the vapor phase.
Claim 15
Independent Claim
89 words
A method of separating 1,4 cineole from a mixture comprising 1,4 and 1,8 cineoles comprising: contacting said mixture with mordenite having a constraint index of from 0.2 to 12 and having port sizes of approximately 6.7-7.0 angstroms such that said 1,4 cineole is sorbed into said mordenite, the amount of said mordenite being about 100 grams per each gram of 1,4 cineole, said contacting occurring under conditions of about 100° C. and 760 mm Hg; separating said mordenite from said mixture; and desorbing said 1,4 cineole from said mordenite.
Claim 16
Independent Claim
89 words
A method of separating 1,4 cineole from a mixture comprising 1,4 and 1,8 cineoles comprising: contacting said mixture with mordenite having a constraint index of from 0.2 to 12 and having port sizes of approximately 6.7-7.0 angstroms such that said 1,4 cineole is sorbed into said mordenite, the amount of said mordenite being about 100 grams per each gram of 1,4 cineole, said contacting occurring under conditions of about 100° C. and 760 mm Hg; separating said mordenite from said mixture; and desorbing said 1,4 cineole from said mordenite.
Claim 17
Dependent Claim
13 words
The method of claim 14, wherein said desorbing is a vapor phase desorption.
Claim 18
Dependent Claim
13 words
The method of claim 14, wherein said desorbing is a liquid phase desorption.
Claim 19
Dependent Claim
29 words
The method of claim 16, wherein said liquid phase desorption is accomplished by immersing said mordenite in an alcohol selected from the group consisting of methanol, ethanol and isopropanol.
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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |