US3065205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic polyketones and preparation thereof
Assignee: EIDP Inc
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Filing: 1959-10-27
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Granted: 1962-11-20
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Expires: 1979-10-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Willard Hallam Bonner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:27
CPC Classifications
C; C08; C08G; C08G61/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR PREPARING ESSENTIALLY LINEAR, SUBSTANTIALLY AROMATIC POLYKETONES WHICH COMPRISES REACTING AN INERT ORGANIC SOLVENT UNDER ANHYDROUS CONDITIONS AT LEAST ONE AROMATIC COMPOUND FROM THE GROUP CONSISTING OF ARYL ETHERS AND POLYNUCLEAR AROMATIC HYDROCARBONS, WITH A DIACID HALIDE FROM THE GROUPS ARE SEPARATED BY AT LEAST ONE CARBON DICARBONYL HALIDES IN WHICH THE POINTS OF ATTACHMENT OF THE CARBONYL GROUPS ARE SEPARATED BY AT LEAST ONE CARBON ATOM, AND ALKYLENE DIACID HALIDES, IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST, AND AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 50* TO ABOUT 125*C.
Claim 2
Dependent Claim
94 words
A PROCESS FOR PREPARING ESSENTIALLY LINEAR, SUBSTANTIALLY AROMATIC POLYKETONES WHICH COMPRISES REACTING AN INERT ORGANIC SOLVENT UNDER ANHYDROUS CONDITIONS AT LEAST ONE AROMATIC COMPOUND FROM THE GROUP CONSISTING OF ARYL ETHERS AND POLYNUCLEAR AROMATIC HYDROCARBONS, WITH A DIACID HALIDE FROM THE GROUPS ARE SEPARATED BY AT LEAST ONE CARBON DICARBONYL HALIDES IN WHICH THE POINTS OF ATTACHMENT OF THE CARBONYL GROUPS ARE SEPARATED BY AT LEAST ONE CARBON ATOM, AND ALKYLENE DIACID HALIDES, IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST, AND AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 50* TO ABOUT 125*C.
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) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |