US2746984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of aliphatic alchols from hydrocarbon-alcohol mixtures
Assignee: Lurgi Gesellschaft fuer Waermetechnik mbH
•
Filing: 1951-06-22
•
Granted: 1956-05-22
•
Expires: 1971-06-22
Abstract
No abstract record available.
Inventors
- 👤 Rottig Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:19
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/88; C07C29/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN THE METHOD FOR THE SEPARATION OF ALIPHATIC ALCOHOLS FROM MIXTURES OF HYDROCARBONS AND ALCOHOLS OBTAINED FROM THE CATALYTIC HYDROGENATION OF CARBON MONOXIDE, THROUGH THE ESTERIFICATION OF SUCH MIXTURES WITH BORIC ACID, THE IMPROVEMENT WHICH COMPRISES CONTACTING SUCH AN ESTERIFIED MIXTURE WITH A SOLVENT CAPABLE OF EXTRACTING THE BORIC ESTERS COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF LIQUID ALCOHOLS AND AMINES, SAID CONTACTING BEING CARRIED OUT TO A POINT AT WHICH SAID SOLVENT IS NOT COMPLETELY SATURATED WITH THE BORIC ACID ESTERS, TO THEREBY FORM AN EXTRACT SOLUTION SUBSTANTIALLY FREE FROM HYDROCARBONS, SEPARATING THE EXTRACT SOLUTION FROM THE REMAINING HYDROCARBONS BY THE FORMATION OF LAYERS, TREATING THE BORIC ACID ESTERS WITH STEAM, AND RECOVERING ALIPHATIC ALCOHOLS BY DISTILLATION.
Claim 2
Dependent Claim
120 words
IN THE METHOD FOR THE SEPARATION OF ALIPHATIC ALCOHOLS FROM MIXTURES OF HYDROCARBONS AND ALCOHOLS OBTAINED FROM THE CATALYTIC HYDROGENATION OF CARBON MONOXIDE, THROUGH THE ESTERIFICATION OF SUCH MIXTURES WITH BORIC ACID, THE IMPROVEMENT WHICH COMPRISES CONTACTING SUCH AN ESTERIFIED MIXTURE WITH A SOLVENT CAPABLE OF EXTRACTING THE BORIC ESTERS COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF LIQUID ALCOHOLS AND AMINES, SAID CONTACTING BEING CARRIED OUT TO A POINT AT WHICH SAID SOLVENT IS NOT COMPLETELY SATURATED WITH THE BORIC ACID ESTERS, TO THEREBY FORM AN EXTRACT SOLUTION SUBSTANTIALLY FREE FROM HYDROCARBONS, SEPARATING THE EXTRACT SOLUTION FROM THE REMAINING HYDROCARBONS BY THE FORMATION OF LAYERS, TREATING THE BORIC ACID ESTERS WITH STEAM, AND RECOVERING ALIPHATIC ALCOHOLS BY DISTILLATION.
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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |