US2497889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of ethers using aldehyde-activated catalysts
Assignee: Eastman Kodak Co
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Filing: 1948-03-26
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Granted: 1950-02-21
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Expires: 1968-03-26
Abstract
No abstract record available.
Inventors
- 👤 David C Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:24
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/23; C07C51/235
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS FOR THE DIRECT OXIDATION OF AN ORGANIC COMPOUND CONTAINING AN ETHER LINKAGE HAVING THE GRAPHIC FORMULA R-O-R'' WHEREIN R AND R'' EACH IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF THE ALKYL AND ARALKYL GROUPS TO THE CORRESPONDING CARBOXYLIC ACID WHICH COMPRISES TREATING A SOLUTION OF A METAL ION IN A LOWER ALIPHTIC ACID WITH AN ALDEHYDE AND A GASEOUS OXIDIZING MEDIUM TO FORM A CATALYST SOLUTION, SIMULTANEOUSLY INTRODUCING MATERIAL AMOUNTS OF THE ETHER-TYPE COMPOUND AND ADDITIONAL ALDEHYDE INTO THE SOLUTION, OXIDIZING THE CONTENT OF ETHER-TYPE COMPOUND OF THE RESULTING SOLUTION OF CATALYST COMPOUND AND ALDEHYDE BY TREATING THE SOLUTION WITH GASEOUS OXIDIZING MEDIUM, MAINTAINING THE SOLUTION UNDER TEMPERATURE AND PRESSURE CONDITIONS DURING INTRODUCTION OF THE OXIDIZING MEDIUM SUCH THAT THE SOLUTION IS MAINTAINED IN THE LIQUID PHASE, AND THEREAFTER RECOVERING THE ACID PRODUCED.
Claim 2
Dependent Claim
137 words
A PROCESS FOR THE DIRECT OXIDATION OF AN ORGANIC COMPOUND CONTAINING AN ETHER LINKAGE HAVING THE GRAPHIC FORMULA R-O-R'' WHEREIN R AND R'' EACH IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF THE ALKYL AND ARALKYL GROUPS TO THE CORRESPONDING CARBOXYLIC ACID WHICH COMPRISES TREATING A SOLUTION OF A METAL ION IN A LOWER ALIPHTIC ACID WITH AN ALDEHYDE AND A GASEOUS OXIDIZING MEDIUM TO FORM A CATALYST SOLUTION, SIMULTANEOUSLY INTRODUCING MATERIAL AMOUNTS OF THE ETHER-TYPE COMPOUND AND ADDITIONAL ALDEHYDE INTO THE SOLUTION, OXIDIZING THE CONTENT OF ETHER-TYPE COMPOUND OF THE RESULTING SOLUTION OF CATALYST COMPOUND AND ALDEHYDE BY TREATING THE SOLUTION WITH GASEOUS OXIDIZING MEDIUM, MAINTAINING THE SOLUTION UNDER TEMPERATURE AND PRESSURE CONDITIONS DURING INTRODUCTION OF THE OXIDIZING MEDIUM SUCH THAT THE SOLUTION IS MAINTAINED IN THE LIQUID PHASE, AND THEREAFTER RECOVERING THE ACID PRODUCED.
References Cited (Backward Citations)
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US2287803A
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US2312468A
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US2307934A
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US2421428A
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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) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |