US2776324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrolysis of isopropyl esters with acid
Assignee: —
•
Filing: —
•
Granted: 1957-01-01
•
Expires: 1974-01-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:45
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/02; C07C31/10; C07C29/00; C07C29/03; C07C29/04; C07C29/09; C07C29/095; C07C31/08; C07C31/12; C07C31/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN A PROCESS OF PRODUCING ISOPROPYL ALCOHOL AND AT LEAST ONE HIHEER SECONDARY ALCOHOL FROM THE CORRESPONDING OLEFINS BY SEPARATELY ABSORBING PROPLYLENE AND A HIGHER SECONDARY OLEFIN IN STRONG POLYBASIC INORGANIC ACID, SEPARATELY HYDROLYZING THE RESULTING ALKYL ESTERS AND RECOVERING THE SECONDARY ALCOHOL THUS PRODUCTED FROM THE ACID, THE IMPROVEMENT WHICH COMPRISES REGULATING THE DILUTION DURING SAID HYDROLYSIS AND ALCOHOL RECOVERY OPERATIONS SO AS TO MAINTAIN THE CONCENTRATION OF DILUTE RESIDUAL ACID FROM THE ISOPROPYL ALCOHOL PRODUCTION WITHIN THE RANGE OF ABOUT 50% TO 70% AND THE CONCENTRATION OF
Claim 2
Dependent Claim
89 words
IN A PROCESS OF PRODUCING ISOPROPYL ALCOHOL AND AT LEAST ONE HIHEER SECONDARY ALCOHOL FROM THE CORRESPONDING OLEFINS BY SEPARATELY ABSORBING PROPLYLENE AND A HIGHER SECONDARY OLEFIN IN STRONG POLYBASIC INORGANIC ACID, SEPARATELY HYDROLYZING THE RESULTING ALKYL ESTERS AND RECOVERING THE SECONDARY ALCOHOL THUS PRODUCTED FROM THE ACID, THE IMPROVEMENT WHICH COMPRISES REGULATING THE DILUTION DURING SAID HYDROLYSIS AND ALCOHOL RECOVERY OPERATIONS SO AS TO MAINTAIN THE CONCENTRATION OF DILUTE RESIDUAL ACID FROM THE ISOPROPYL ALCOHOL PRODUCTION WITHIN THE RANGE OF ABOUT 50% TO 70% AND THE CONCENTRATION OF
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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |