Patent US3033803A successfully refreshed from Google Patents.
US3033803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of glycidyl ethers
Assignee: Celanese Coatings Co
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Filing: 1958-10-03
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Granted: 1962-05-08
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Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 Herbert P Price
- 👤 William J Belanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:04
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
THE PROCESS OF PRODUCING GLYCIDYL ETHERS OF ALCOHOLS WHICH COMPRISES REACTING THE ALCOHOL WITH EQICHLOROHYDRIN IN AMOUNT SUFFICIENT TO FORM A CHLOROHYDRON ETHER AND IN THE PRESENCE OF A BORON FLUORIDE CATALYST, INACTIVATING THE CATALYST AT THE END OF SUCH REACTION, ADMIXING WITH THE CHLOROHYDRIN ETHER AN AMOUNT OF EPICHLOROHYDRIN IN THE PROPORTION OF AT LEAST ONE MOL OF EPICHLOROHYDRIN PER MOL OF CHLOROHYDRIN ETHER, EFFECTING DEHYDROHALOGENATION WITH THE USE OF CAUSTIC ALKALI IN AMOUNT SUFFICIENT TO DEHYDROHALOGENATE THE CHLOROHYDRIN ETHER, AND SEPARATING THE RESULTING GLYCIDYL ETHER FROM THE EPICHLOROHYDRIN AND BYPRODUCT SALT.
References Cited (Backward Citations)
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US2512996A
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US2538072A
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US2581464A
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US2548447A
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US2712000A
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US2841595A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |