US2943096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of monomeric glycidyl polyethers of polyhydric phenols
Assignee: Union Carbide Corp
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Filing: 1957-05-10
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Granted: 1960-06-28
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Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Norman H Reinking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:21
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/063; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
PROCESS FOR THE PREPARATION OF GLYCIDYL OF POLYETHERS OF POLYHYDRIC PHENOLS WHICH COMPRISES REACTING A SUBSTANTIALLY ANHYDROUS MIXTURE CONTAINING A POLYHYDRIC PHENOL, EPICHLOROHYDRIN IN AN AMOUNT SUFFICIENT TO PROVIDE AT LEAST ABOUT 3 MOLES OF EPICHLOROHYDRIN PER PHENOLIC HYDROXYL GROUP, AND A CATALYTIC AMOUNT OF A BASE-GENERATING QUATERNARY AMMONIUM COMPOUND ON REACTION WITH EPICHLOROHYDRIN, UNTIL SUBSTANTIALLY ALL OF THE SAID PHENOL HAS BEEN CONVERTED TO ITS CHLOROHYDRIN ETHER, REMOVING THE UNREACTED EPICHLOROHYDRIN FROM SAID CHLOROHYDRIN ETHER AND SUBJECTING SAID CHLOROHYDRIN ETHER TO SUBSTANTIALLY COMPLETE DEHYDROCHLORINATION.
Claim 2
Dependent Claim
85 words
PROCESS FOR THE PREPARATION OF GLYCIDYL OF POLYETHERS OF POLYHYDRIC PHENOLS WHICH COMPRISES REACTING A SUBSTANTIALLY ANHYDROUS MIXTURE CONTAINING A POLYHYDRIC PHENOL, EPICHLOROHYDRIN IN AN AMOUNT SUFFICIENT TO PROVIDE AT LEAST ABOUT 3 MOLES OF EPICHLOROHYDRIN PER PHENOLIC HYDROXYL GROUP, AND A CATALYTIC AMOUNT OF A BASE-GENERATING QUATERNARY AMMONIUM COMPOUND ON REACTION WITH EPICHLOROHYDRIN, UNTIL SUBSTANTIALLY ALL OF THE SAID PHENOL HAS BEEN CONVERTED TO ITS CHLOROHYDRIN ETHER, REMOVING THE UNREACTED EPICHLOROHYDRIN FROM SAID CHLOROHYDRIN ETHER AND SUBJECTING SAID CHLOROHYDRIN ETHER TO SUBSTANTIALLY COMPLETE DEHYDROCHLORINATION.
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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |