US3729520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of unsaturated fatty alcohols
Assignee: Henkel AG and Co KGaA
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Filing: 1969-05-26
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Granted: 1973-04-24
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Expires: 1989-05-26
Abstract
Abstract PROCESS FOR THE PREPARATION OF UNSATURATED FATTY ALCOHOLS BY SELECTIVE HYDROGENATION OF UNSATURATED FATTY ACIDS AND ESTERS THEREOF WITH ALIPHATIC ALCOHOLS AT 250-330*C. AND HYDROGEN PRESSURE OF 100-500 ATMOSPHERES, THE AMOUNT OF HYDROGEN BEING 10-100 NM.3 PER LITER OF STARTING MATERIAL, IN PRESENCE OF ZINC-ALUMINUM OXYGEN CONTAINING A CATALYST REDUCTIVELY PRETREATED AT ELEVATED TEMPERATURES.
Inventors
- 👤 H Rutzen
- 👤 W Rittmeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:31
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/147; C07C29/149; B; B01; B01J; B01J21/00; B01J23/00; B01J23/06; B01J23/16; B01J23/24; B01J23/26; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |