Patent US2636046A successfully refreshed from Google Patents.
US2636046A
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Preparation of polyfunctional compounds
Assignee: EIDP Inc
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Filing: 1948-10-16
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Granted: 1953-04-21
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Expires: 1968-10-16
Abstract
No abstract record available.
Inventors
- 👤 William F Gresham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:19
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/1512; C07C29/1514; C07C29/153; C07C29/156; C07C67/00; C07C67/36; C12; C12C; C12C11/00; C12C11/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
A PROCESS FOR THE MANUFACTURE OF POLYFUNCTIONAL COMPOUNDS WHICH COMPRISES REACTING CARBON MONOXIDE WITH HYDROGEN AT A PRESSURE WITHIN THE RANGE OF 2000 TO 5000 ATMOSPHERES AT A TEMPERATURE WITHIN THE RANGE OF 180* TO 300* C. IN THE PRESENCE OF A CATALYLIC QUANTITY OF A CONBALT SALT OF AN ORGANIC CARBOXYLIC AND DISSOLVED IN AN ALIPHATIC CARBOXYLIC ACID WHICH IS LIQUID UNDER THE REACTION CONDITION, WHEREBY ESTERS OF ETHYLENE GLYCOL AND OF GLYCEROL ARE PRODUCED SIMULTNEOUSLY, AND THEREAFTER RECOVERING THE SAID ESTERS FROM THE RESULTING MIXTURE.
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) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |