US3584058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of alkyl aryl ethers
Assignee: Bayer AG
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Filing: 1968-06-10
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Granted: 1971-06-08
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Expires: 1988-06-10
Abstract
Abstract PRODUCTION OF ALKYL ARYL ETHERS BY REACTING AN AROMATIC HYDROXY COMPOUND, E.G. PHENOL, CRESOL, DIHYDROXY BENZENE, ETC., WITH AN OLEFIN, ELG. PROPYLENE, IN THE PRESENCE OF A SYNTHETIC-RESIN-BASED CATION EXCHANGER IN THE H+-FORM AS CATALYST, AND IN THE ADDITIONAL PRESENCE OF AN ALIPHATIC ALCOHOL, E.G. METHANOL, ISOPROPANOL, BUTANOL, ETC., AT A TEMPERATURE OF FOR INSTANCE 30-200*C., OPTIONALLY IN THE PRESENCE OF AN INERT ORGANIC SOLVENT, SUCH ETHERS BEING KNOWN AND BEING USABLE IN THE KNOWN MANNER AS PLASTICS AUXILIARIES OR TO PRODUCE INSECTICIDES OR DYES.
Inventors
- 👤 Willi Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:07
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20
Claims Analysis
Total Claims: 0
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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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |