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Patent US3987101A successfully refreshed from Google Patents.
US3987101A
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Process for preparing cycloalkanones and cycloalkanols
Assignee: Stamicarbon BV
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Filing: 1973-10-19
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Granted: 1976-10-19
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Expires: 1993-10-19
Abstract
Abstract A process for preparing cycloalkanones and cycloalkanols by conversion of cycloalkylhydroperoxides under the influence of a solid heterogeneous catalyst wherein cycloalkylhydroperoxides having 5-12 carbon atoms in the ring are converted under the influence of an oxidic, chromium catalyst which does not contain any copper oxide.
Inventors
- 👤 Jan Wolters
- 👤 Jan L. J. P. Hennekens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:24
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/51; C07C45/53; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J23/70; B01J23/72; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
A process for preparing cycloalkanones and cycloalkanols by conversion of cycloalkylhydroperoxides under the influence of a solid heterogeneous catalyst comprising converting a cycloalkylhydroperoxide having 5-12 carbon atoms in the ring by heating said cycloalkylhydroperoxide at a temperature of from about 30° C to about 150° C in the presence of a copper oxide-free chromium oxide catalyst wherein the valency of the chromium is from 3 to 6.
Claim 2
Dependent Claim
67 words
A process for preparing cycloalkanones and cycloalkanols by conversion of cycloalkylhydroperoxides under the influence of a solid heterogeneous catalyst comprising converting a cycloalkylhydroperoxide having 5-12 carbon atoms in the ring by heating said cycloalkylhydroperoxide at a temperature of from about 30° C to about 150° C in the presence of a copper oxide-free chromium oxide catalyst wherein the valency of the chromium is from 3 to 6.
Claim 3
Dependent Claim
24 words
Process according to claim 1, characterized in that the conversion of cycloalkylhydroperoxide is carried out at a temperature of between 60° and 110° C.
Claim 4
Dependent Claim
20 words
A process according to claim 1 wherein said catalyst is produced from a compound decomposable into chromium oxide when heated.
Claim 5
Dependent Claim
27 words
A process according to claim 1 wherein said catalyst is supported on a carrier with a load factor of not more than 10% by weight of chromium.
Claim 6
Dependent Claim
13 words
A process according to claim 1 wherein the catalyst is chromium (VI) oxide.
Claim 7
Dependent Claim
36 words
A process according to claim 4, wherein said catalyst is prepared by heating at 300°-500° C in the presence of a molecular oxygen containing gas a chromium (III) oxide or a compound changeable thereto upon heating.
Claim 8
Dependent Claim
36 words
The process of claim 1 wherein the cycloalkylhydroperoxide used is employed as a solution in the corresponding cycloalkane derived from the liquid phase oxidation of the cycloalkane using a molecular oxygen containing gas as the oxidant.
Claim 9
Dependent Claim
23 words
The process of claim 7 wherein the liquid phase oxidation reaction product is washed with water prior to use in the conversion process.
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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |