Patent US3356731A successfully refreshed from Google Patents.
US3356731A
Expired / Lapsed
US
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Method for producting 2-acetyl-1, 3-diketone
Assignee: Individual
•
Filing: 1964-05-11
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Granted: 1967-12-05
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Nilsson John Martin
- 👤 Mereuyi Ferenc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:09
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/51; C07C45/54; C07C49/00; C07C49/04; C07C49/12; C07C49/385; C07C49/395; C07C49/403; C07C49/413; C07C49/587; C07C49/597; C07C49/657; C07C49/665; C07C49/67; C07C49/687
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF PRODUCING 2 - ACETYL - 1,3 - DIKETONES, WHICH COMPRISES REACTING ISOPROPENYL ACETATE WITH A CARBOXYLIC ACID DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF THE HALIDES AND ANHYDRIDES OF PHTHALIC ACID, AND OF ALIPHATIC MONO AND DICARBOXYLIC ACIDS WHERE ANY UNSATURATION PRESENT IS OLEFINIC AND WHEREIN ANY FUNCTIONAL SUBSTITUENTS PRESENT OTHER THAN THE ACID HALIDE OR ANHYDRIDE IS HALOGEN; IN THE LIQUID PHASE, IN THE PRESENCE OF A LEWIS ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE AND TITANIUM TETRACHLORIDE, AT A TEMPERATURE BETWEEN APPROXIMATELY ROOM TEMPERATURE AND THE BOILING POINT OF SAID LIQUID PHASE, AND RECOVERING A 2-ACETYL-1,3-DIKETONE AS THE PRODUCT.
Claim 2
Independent Claim
107 words
A METHOD OF PRODUCING 2 - ACETYL - 1,3 - DIKETONES, WHICH COMPRISES REACTING ISOPROPENYL ACETATE WITH A CARBOXYLIC ACID DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF THE HALIDES AND ANHYDRIDES OF PHTHALIC ACID, AND OF ALIPHATIC MONO AND DICARBOXYLIC ACIDS WHERE ANY UNSATURATION PRESENT IS OLEFINIC AND WHEREIN ANY FUNCTIONAL SUBSTITUENTS PRESENT OTHER THAN THE ACID HALIDE OR ANHYDRIDE IS HALOGEN; IN THE LIQUID PHASE, IN THE PRESENCE OF A LEWIS ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE AND TITANIUM TETRACHLORIDE, AT A TEMPERATURE BETWEEN APPROXIMATELY ROOM TEMPERATURE AND THE BOILING POINT OF SAID LIQUID PHASE, AND RECOVERING A 2-ACETYL-1,3-DIKETONE AS THE PRODUCT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |