US4360699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing a 3-phenoxytoluene and diphenyl ether
Assignee: Ethyl Corp
•
Filing: 1981-12-23
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Granted: 1982-11-23
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Expires: 2001-12-23
Abstract
Abstract Diaryl ethers such as 3-phenoxytoluene are made by heating an aromatic hydroxy compound or mixture of such compounds with aluminum or an aluminum phenoxide forming compound such as aluminum trialkyl.
Inventors
- 👤 William E. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:32
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/09
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
58 words
A process for making a major portion of 3-phenoxytoluene and a minor portion of diphenyl ether, said process comprising heating a mixture of about 1 to 3 mole parts phenol, 1 mole part m-cresol and 0.1 or more gram-atom parts aluminum or mole parts aluminum phenoxide forming compound in an autoclave at a temperature of about 300°-375° C.
Claim 2
Dependent Claim
58 words
A process for making a major portion of 3-phenoxytoluene and a minor portion of diphenyl ether, said process comprising heating a mixture of about 1 to 3 mole parts phenol, 1 mole part m-cresol and 0.1 or more gram-atom parts aluminum or mole parts aluminum phenoxide forming compound in an autoclave at a temperature of about 300°-375° C.
Claim 3
Dependent Claim
15 words
A process of claim 1 wherein said aluminum phenoxide forming compound is an aluminum alkyl.
References Cited (Backward Citations)
US1873537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |