Patent US3644540A successfully refreshed from Google Patents.
US3644540A
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5 7 - diisopropyl-1 1-dimethyl-6-hydroxyindan and process for preparing same
Assignee: Givaudan Roure Corp
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Filing: 1968-07-01
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Granted: 1972-02-22
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Expires: 1988-07-01
Abstract
Abstract THE NOVEL COMPOUND, 5,7-DIISOPROPYL-1,1-DIMETHYL-6HYDDROXYINDAN, (I), AND A PROCESS FOR PREPARING IT, ARE DISCLOSED. I IS A COLORLESS CRYSTALLINE MATERIAL, M.P. 99*100*C., AND HAS A STRONG AND PLEASANT MUSK ODOR, I IS SUITABLE FOR USE IN PERFUMERY. I ALSO EXHIBITS PROPERTIES AS AN ANTIOXIDANT. I IS PREPARED BY REACTING 2,6-DIIOPROPYLPHENOL AND ISOPRENE, IN THE PRESENCE OF SULFURIC ACID OR OTHER ALKYLATING CATALYSTS; AT TEMPERATURES FROM -20* TO 150*C., DEPENDING ON THE STRENGTH OF THE CATALYST.
Inventors
- 👤 Thomas F Wood
- 👤 George H Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:24
CPC Classifications
C; C11; C11B; C11B9/00; C11B9/0042; C11B9/0046; C11B9/0049; C07; C07C; C07C37/00; C07C37/11; C07C37/14; C07C39/00; C07C39/12; C07C39/17; C09; C09K; C09K15/00; C09K15/04; C09K15/06; C09K15/08; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08
Claims Analysis
Total Claims: 0
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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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |