US2878292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of bourbonal
Assignee: Fort James Corp
•
Filing: 1955-06-20
•
Granted: 1959-03-17
•
Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 Kamlet Jonas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:58
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C45/71; C07C45/673; C07C45/78; C07C45/81
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR THE SELECTIVE SEPARATION OF BOURBONAL AS THE SODIUM SALT THEREOF FROM A MIXTURE CONTAINING BOURBONAL, VANILLIN, PROTOCATECHUIC ALDEHYDE, M-HYDROXY, P-ETHOXYBENZALDEHYDE, M,P-DIETHOXYBENZALDEHYDE, SAID MIXTURE BEING OBTAINED BY THE SUCCESSIVE DEMETHYLATION AND ETHYLATION OF VANILLIN, WHICH COMPRISES ADJUSTING A SOLUTION OF THESE PRODUCTS IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL, N-PROPANOL AND ISOPROPANOL CONTAINING ZERO TO 50% OF WATER, TO A PH BETWEEN 8.5 AND 9.0 WITH A MEMBER OF THE GROUP CONSISTING OF SODIUM HYDROXIDE AND THE SODIUM ALCOHOLATES, AND SEPARATING THE INSOLUBLE SODIUM ACID SALT OF BOURBONAL FROM THE SOLUTION OF THE HOMOLOGUES AND ANALOGUES.
Claim 2
Dependent Claim
102 words
A PROCESS FOR THE SELECTIVE SEPARATION OF BOURBONAL AS THE SODIUM SALT THEREOF FROM A MIXTURE CONTAINING BOURBONAL, VANILLIN, PROTOCATECHUIC ALDEHYDE, M-HYDROXY, P-ETHOXYBENZALDEHYDE, M,P-DIETHOXYBENZALDEHYDE, SAID MIXTURE BEING OBTAINED BY THE SUCCESSIVE DEMETHYLATION AND ETHYLATION OF VANILLIN, WHICH COMPRISES ADJUSTING A SOLUTION OF THESE PRODUCTS IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL, N-PROPANOL AND ISOPROPANOL CONTAINING ZERO TO 50% OF WATER, TO A PH BETWEEN 8.5 AND 9.0 WITH A MEMBER OF THE GROUP CONSISTING OF SODIUM HYDROXIDE AND THE SODIUM ALCOHOLATES, AND SEPARATING THE INSOLUBLE SODIUM ACID SALT OF BOURBONAL FROM THE SOLUTION OF THE HOMOLOGUES AND ANALOGUES.
References Cited (Backward Citations)
DE122851C
Cited
GB316444A
Cited
DE622966C
Cited
US2100228A
Cited
US2387920A
Cited
US2477158A
Cited
US2676191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |