US2688591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of oxo-process aldehydes by distillation
Assignee: Standard Oil Co
•
Filing: 1950-05-06
•
Granted: 1954-09-07
•
Expires: 1970-05-06
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:08
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A PROCESS FOR PURIFYING A CRUDE OLEFIN FORMYLATION PRODUCT OBTAINED BY MEANS OF THE OXO PROCESS, SAID CRUDE OLEFIN FORMYLATION PRODUCT CONTAINING ALDEHYDES AND UREACTED OLEFINS, TOGETHER WITH ACIDIC BY-PRODUCTS OF SAID OXO PROCESS NORMALLY HAVING A DETRIMENTAL EFFECT UPON THE FURTHER TREATMENT OF ALDEHYDES CONTAINED IN SAID PRODUCT, THE STEPS WHICH COMPRISE COMMINGLING SAID CRUDE OLEFIN FORMYLATION PRODUCT WITH WATER AND A BUFFERING QUANTITY OF A NEUTRAL, WATER-SOLUBLE SALT DERIVED FROM AN ACID CONTAINING AT LEAST ONE IONIZABLE HYDROGEN ATOM HAVING A DISSOCIATION CONSTANT AT 25* C. SMALLER THAN ABOUT 10-3, STEAM-DISTILLING THE RESULTING MIXTURE AT A PH ABOVE ABOUT 5 IN THE ABSENCE OF FREE STRONG BASE, AND WITHDRAWING UREACTED OLEFINS AND PURIFIED ALDEHYDES THEREFROM AS A DISTILLATE STREAM.
Claim 2
Dependent Claim
122 words
IN A PROCESS FOR PURIFYING A CRUDE OLEFIN FORMYLATION PRODUCT OBTAINED BY MEANS OF THE OXO PROCESS, SAID CRUDE OLEFIN FORMYLATION PRODUCT CONTAINING ALDEHYDES AND UREACTED OLEFINS, TOGETHER WITH ACIDIC BY-PRODUCTS OF SAID OXO PROCESS NORMALLY HAVING A DETRIMENTAL EFFECT UPON THE FURTHER TREATMENT OF ALDEHYDES CONTAINED IN SAID PRODUCT, THE STEPS WHICH COMPRISE COMMINGLING SAID CRUDE OLEFIN FORMYLATION PRODUCT WITH WATER AND A BUFFERING QUANTITY OF A NEUTRAL, WATER-SOLUBLE SALT DERIVED FROM AN ACID CONTAINING AT LEAST ONE IONIZABLE HYDROGEN ATOM HAVING A DISSOCIATION CONSTANT AT 25* C. SMALLER THAN ABOUT 10-3, STEAM-DISTILLING THE RESULTING MIXTURE AT A PH ABOVE ABOUT 5 IN THE ABSENCE OF FREE STRONG BASE, AND WITHDRAWING UREACTED OLEFINS AND PURIFIED ALDEHYDES THEREFROM AS A DISTILLATE STREAM.
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) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |