Patent US2533276A successfully refreshed from Google Patents.
US2533276A
Expired / Lapsed
US
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Preparation of ester-acetals
Assignee: Rohm and Haas Co
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Filing: 1949-07-26
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Granted: 1950-12-12
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Expires: 1969-07-26
Abstract
No abstract record available.
Inventors
- 👤 Charles H Mckeever
- 👤 George H Agnew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:21
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/30; C07C69/00; C07C69/66; C07C69/67; C07C69/708
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A PROCESS FOR THE PREPARATION OF ESTERACETALS WHICH COMPRISES REACTING, AT A PRESSURE OF 1000 TO 4000 LBS. PER SQUARE INCH AND AT A TEMPERATURE OF 80*C. TO 200*C., A MIXTURE OF CARBON MONOXIDE, HYDROGEN, AN ALCOHOL FROM THE CLASS CONSISTING OF METHANOL AND ETHANOL, AND AN ESTER HAVING THE GENERAL STRUCTURAL FORMULA (R)COOR'' IN WHICH (R) REPRESENTS A MONOVALENT ALIPHATIC, HYDROCARBON RADICAL OF 2 TO 21 CARBON ATOMS CONTAINING ONE DOUBLE BOND AND R'' IS A MONOVALENT, HYDROCARBON RADICAL WHICH IS FREE OF NON-BENZENOID UNSATURATION AND WHICH CONTAINS 1 TO 12 CARBON ATOMS, IN THE PRESENCE OF 0.0001 TO 0.05 MOLE PER CENT, BASED ON SAID ESTER, OF A DISSOLVED COBALT CATALYST FROM THE CLASS CONSISTING OF COBALT CARBONYL AND ORGANIC ACID SALTS OF COLBALT WHICH ARE FREE OF NON-BENZENOID UNSATURATION AND WHICH ARE SOLUBLE IN SAID MIXTURE, AND SEPARATING THE RESULTANT ACETAL FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
148 words
A PROCESS FOR THE PREPARATION OF ESTERACETALS WHICH COMPRISES REACTING, AT A PRESSURE OF 1000 TO 4000 LBS. PER SQUARE INCH AND AT A TEMPERATURE OF 80*C. TO 200*C., A MIXTURE OF CARBON MONOXIDE, HYDROGEN, AN ALCOHOL FROM THE CLASS CONSISTING OF METHANOL AND ETHANOL, AND AN ESTER HAVING THE GENERAL STRUCTURAL FORMULA (R)COOR'' IN WHICH (R) REPRESENTS A MONOVALENT ALIPHATIC, HYDROCARBON RADICAL OF 2 TO 21 CARBON ATOMS CONTAINING ONE DOUBLE BOND AND R'' IS A MONOVALENT, HYDROCARBON RADICAL WHICH IS FREE OF NON-BENZENOID UNSATURATION AND WHICH CONTAINS 1 TO 12 CARBON ATOMS, IN THE PRESENCE OF 0.0001 TO 0.05 MOLE PER CENT, BASED ON SAID ESTER, OF A DISSOLVED COBALT CATALYST FROM THE CLASS CONSISTING OF COBALT CARBONYL AND ORGANIC ACID SALTS OF COLBALT WHICH ARE FREE OF NON-BENZENOID UNSATURATION AND WHICH ARE SOLUBLE IN SAID MIXTURE, AND SEPARATING THE RESULTANT ACETAL FROM THE REACTION MIXTURE.
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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |