Patent US2942033A successfully refreshed from Google Patents.
US2942033A
Expired / Lapsed
US
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Stabilization of polyoxyalkylene
Assignee: —
•
Filing: —
•
Granted: 1960-06-21
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Expires: 1977-06-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:34
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/32; C08G65/329; C08G65/331; C08G65/3311; C08G65/3314; C08G65/3315; C08G65/3317
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS FOR THE PRODUCTION OF POLYOXYALKYLENE COMPOUNDS WHICH COMPRISES REACTING A 1,2-ALKYLENE OXIDE WITH A HYDROXYL-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF WATER AND ALIPHATIC MONO-, DI-, TRI-, AND POLYHYDRIC ALCOHOLS IN THE PRESENCE OF AN ALKALINE CATALYST, THAT IMPROVEMENT WHICH COMPRISES ADJUSTING THE PH OF THE CRUDE REACTION PRODUCT TO WITHIN A RANGE OF FROM ABOUT 6 TO ABOUT 11 AND THEREAFTER INCORPORATING IN SAID CRUDE REACTION PRODUCT, AT A TEMPERATURE UP TO ABOUT 150*C. AND AT A TIME NOT MORE THAN ABOUT ONE HOUR SUBSEQUENT TO ANY COMPLETE NEUTRALIZATION OF SAID CRUDE REACTION PRODUCT, A STABILIZING QUANTITY OF A PHENOLIC COMPOUND CORRESPONDING TO THE FORMULA:
Claim 2
Dependent Claim
110 words
IN A PROCESS FOR THE PRODUCTION OF POLYOXYALKYLENE COMPOUNDS WHICH COMPRISES REACTING A 1,2-ALKYLENE OXIDE WITH A HYDROXYL-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF WATER AND ALIPHATIC MONO-, DI-, TRI-, AND POLYHYDRIC ALCOHOLS IN THE PRESENCE OF AN ALKALINE CATALYST, THAT IMPROVEMENT WHICH COMPRISES ADJUSTING THE PH OF THE CRUDE REACTION PRODUCT TO WITHIN A RANGE OF FROM ABOUT 6 TO ABOUT 11 AND THEREAFTER INCORPORATING IN SAID CRUDE REACTION PRODUCT, AT A TEMPERATURE UP TO ABOUT 150*C. AND AT A TIME NOT MORE THAN ABOUT ONE HOUR SUBSEQUENT TO ANY COMPLETE NEUTRALIZATION OF SAID CRUDE REACTION PRODUCT, A STABILIZING QUANTITY OF A PHENOLIC COMPOUND CORRESPONDING TO THE FORMULA:
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) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |