US2983763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decolorizing the product of reacting an alkylene oxide with a hydroxylcontaining organic compound in the presence of an alkaline reacting catalyst
Assignee: Jefferson Chemical Co Inc
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Filing: 1956-04-12
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Granted: 1961-05-09
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Expires: 1976-04-12
Abstract
No abstract record available.
Inventors
- 👤 Walter P Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:09
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A PROCESS COMPRISING REACTING AN ALKYLENE OXIDE WITH A HYDROXYL-CONTAINING ORGANIC COMPOUND SELECTED FROM GROUP CONSISTING OF ALCOHOLS, PHENOLS AND PARTIAL ETHERS OF POLYHYDROXY ALCOHOLS IN THE PRESENCE OF AN ALKALINE-REACTING SUBSTANCE AS A CATALYST, TO PRODUCE AN ETHER REACTION PRODUCT: THE IMPROVEMENT COMPRISING DECOLORIZING SAID REACTION PRODUCT BY TREATING SAID REACTION PRODUCT WITH AN ACIDIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, ACETIC ACID, SULFURIC ACID, CITRIC ACID AND CARBON DIOXIDE IN AMOUNT SUFFICIENT TO REACT WITH AT LEAST PART OF SAID ALKALINE-REACTING CATALYST AND PRODUCE A PH BELOW ABOUT 8 WHILE CONTACTING SAID REACTION PRODUCT WITH AN OXYGEN-CONTAINING GAS.
Claim 2
Dependent Claim
104 words
IN A PROCESS COMPRISING REACTING AN ALKYLENE OXIDE WITH A HYDROXYL-CONTAINING ORGANIC COMPOUND SELECTED FROM GROUP CONSISTING OF ALCOHOLS, PHENOLS AND PARTIAL ETHERS OF POLYHYDROXY ALCOHOLS IN THE PRESENCE OF AN ALKALINE-REACTING SUBSTANCE AS A CATALYST, TO PRODUCE AN ETHER REACTION PRODUCT: THE IMPROVEMENT COMPRISING DECOLORIZING SAID REACTION PRODUCT BY TREATING SAID REACTION PRODUCT WITH AN ACIDIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, ACETIC ACID, SULFURIC ACID, CITRIC ACID AND CARBON DIOXIDE IN AMOUNT SUFFICIENT TO REACT WITH AT LEAST PART OF SAID ALKALINE-REACTING CATALYST AND PRODUCE A PH BELOW ABOUT 8 WHILE CONTACTING SAID REACTION PRODUCT WITH AN OXYGEN-CONTAINING GAS.
References Cited (Backward Citations)
US2723294A
Cited
US2778854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |