US2986552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for preparing glycidyl ethers of phenols
Assignee: Shell USA Inc
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Filing: 1957-10-04
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Granted: 1961-05-30
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Expires: 1977-10-04
Abstract
No abstract record available.
Inventors
- 👤 Landua Alton John
- 👤 Schuren John George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:23
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; H; H01; H01J; H01J25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR PREPARING GLYCIDYL ETHERS OF PHENOLS WHICH COMPRISES FORMING A HOMOGENEOUS MIXTURE BY CONTINUOUSLY INTRODUCING AN EPOXY FORMING MATERIAL OF THE GROUP CONSISTING OF EPICHLOROHYDRIN AND GLYCEROL CHLOROHYDRIN, ALSO A PHENOL, AN ALIPHATIC KETONE CONTAINING NO MORE THAN 4 CARBON ATOMS, AND WATER WHICH MIXTURE CONTAINS THE EPICHLOROHYDRIN AND PHENOL IN A MOL RATIO VARYING FROM 1:1 TO 25:1 INTO AN ELONGATED REACTION ZONE WHERE THE MIXTURE IS MIXED WITH AN ALKALI METAL HYDROXIDE IN AT LEAST AN EQUIVALENT AMOUNT RELATIVE TO THE EPOXY-FORMING MATERIAL AND THE RESULTING MIXTURE HEATED AT A TEMPERATURE ABOVE ABOUT 70*C. REMOVING THE REAC-
Claim 2
Dependent Claim
101 words
A PROCESS FOR PREPARING GLYCIDYL ETHERS OF PHENOLS WHICH COMPRISES FORMING A HOMOGENEOUS MIXTURE BY CONTINUOUSLY INTRODUCING AN EPOXY FORMING MATERIAL OF THE GROUP CONSISTING OF EPICHLOROHYDRIN AND GLYCEROL CHLOROHYDRIN, ALSO A PHENOL, AN ALIPHATIC KETONE CONTAINING NO MORE THAN 4 CARBON ATOMS, AND WATER WHICH MIXTURE CONTAINS THE EPICHLOROHYDRIN AND PHENOL IN A MOL RATIO VARYING FROM 1:1 TO 25:1 INTO AN ELONGATED REACTION ZONE WHERE THE MIXTURE IS MIXED WITH AN ALKALI METAL HYDROXIDE IN AT LEAST AN EQUIVALENT AMOUNT RELATIVE TO THE EPOXY-FORMING MATERIAL AND THE RESULTING MIXTURE HEATED AT A TEMPERATURE ABOVE ABOUT 70*C. REMOVING THE REAC-
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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |