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US3607948A
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US
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Preparation of cyclododecanol
Assignee: EIDP Inc
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Filing: 1968-02-16
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Granted: 1971-09-21
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Expires: 1988-02-16
Abstract
Abstract A process for the preparation of a cyclic alcohol by air oxidation of a cycloaliphatic compound to a mixture containing 130 percent by weight cycloaliphatic hydroperoxide, oxidizing cycloolefin by means of the cycloaliphatic hydroperoxide, hydrogenating the resulting product, and recovering cyclic alcohol and unconverted cycloaliphatic compound for recycle.
Inventors
- 👤 Donald Eldon Welton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:26
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/04; C07C; C07C407/00; C07C409/00; C07C409/02; C07C409/14; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C2601/00; C07C2601/18; C07C2601/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
26 words
The process of claim 1 in which the catalyst used in the oxidizing of the cyclododecatriene is removed prior to hydrogenating the mixture containing cyclododecatriene oxides.
Claim 2
Dependent Claim
22 words
The process of claim 2 in which the cyclododecane is recovered from the hydrogenated product and recycled to the air oxidation step.
Claim 3
Dependent Claim
26 words
The process of claim 3 in which a mixture containing cyclododecanone and cyclododecane epoxide is recovered from the hydrogenated product and recycled to the hydrogenation step.
Claim 4
Dependent Claim
27 words
The process of claim 4 in which the air oxidized product is neutralized by washing with dilute aqueous alkali prior to hydrogenation of the air oxiDized product.
Claim 5
Dependent Claim
37 words
The process of claim 1 in which the catalyst employed in the oxidation of cyclododecatriene is orthoboric acid, and said catalyst is present in the amount of 0.5 to 5 mol per mol of cyclododecyl hydroperoxide present.
Claim 6
Dependent Claim
40 words
The process of claim 1 in which the catalyst employed in the oxidation of cyclododecatriene is a molybdenum containing catalyst and said catalyst is present in the amount of 0.005 to 0.5 percent by weight of the total organics present.
Claim 7
Dependent Claim
40 words
The process of claim 1 in which the catalyst employed in the oxidation of cyclododecatriene is a vanadium containing catalyst and said catalyst is present in the amount of 0.005 to 0.5 percent by weight of the total organics present.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |