Patent US2564200A successfully refreshed from Google Patents.
US2564200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azeotropic distillation of alcohols from methyl n-butyl ketone
Assignee: Stanolind Oil and Gas Co
•
Filing: 1949-05-28
•
Granted: 1951-08-14
•
Expires: 1969-05-28
Abstract
No abstract record available.
Inventors
- 👤 Grekel Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:06
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; C07C29/82; C07C45/00; C07C45/78; C07C45/81; C07C45/82; C07C45/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PROCESS FOR SEPARATING COMPONENTS OF A MIXTURE COMPRISING METHYL N-BUTYL KETONE 1PROPANOL, AND WATER, TOGETHER WITH A QUANTITY OF 1-BUTANOL HAVING A RATIO TO SAID METHYL NBUTYL KETONE SMALLER THAN THE RATIO OF 1-BUTANOL TO METHYL N-BUTYL KETONE IN THE BINARY AZEOTROPE THEREOF; DRYING SAID FIRST DISTILLATE FRACTION; DISTILLING THE DRIED DISTILLATE FRACTION AND SEPARATING THEREFROM A SECOND DISTILLATE FRACTION COMPRISING ESSENTIALLY -PROPANOL; AND FURTHER DISTILLING SAID DRIED DISTILLATE FRACTION CONTAINING THEREFROM A THIRD DISTILLATE FRACTION CONTAINING SUBSTANTIALLY ALL OF SAID 1-BUTANOL AS AN AZEOTROPIC MIXTURE WITH METHYL N-BUTYL KETONE, LEAVING A RESIDUUM OF PURIFIED METHYL N-BUTYL KETONE.
Claim 2
Dependent Claim
99 words
A PROCESS FOR SEPARATING COMPONENTS OF A MIXTURE COMPRISING METHYL N-BUTYL KETONE 1PROPANOL, AND WATER, TOGETHER WITH A QUANTITY OF 1-BUTANOL HAVING A RATIO TO SAID METHYL NBUTYL KETONE SMALLER THAN THE RATIO OF 1-BUTANOL TO METHYL N-BUTYL KETONE IN THE BINARY AZEOTROPE THEREOF; DRYING SAID FIRST DISTILLATE FRACTION; DISTILLING THE DRIED DISTILLATE FRACTION AND SEPARATING THEREFROM A SECOND DISTILLATE FRACTION COMPRISING ESSENTIALLY -PROPANOL; AND FURTHER DISTILLING SAID DRIED DISTILLATE FRACTION CONTAINING THEREFROM A THIRD DISTILLATE FRACTION CONTAINING SUBSTANTIALLY ALL OF SAID 1-BUTANOL AS AN AZEOTROPIC MIXTURE WITH METHYL N-BUTYL KETONE, LEAVING A RESIDUUM OF PURIFIED METHYL N-BUTYL KETONE.
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) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |