Patent US3294846A successfully refreshed from Google Patents.
US3294846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing metaaryloxy phenols
Assignee: Dow Chemical Co
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Filing: 1962-10-10
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Granted: 1966-12-27
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Expires: 1982-10-10
Abstract
No abstract record available.
Inventors
- 👤 John E Livak
- 👤 J W Britton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:22
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD FOR PREPARING M-PHENOXYPHENOLS WHICH COMPRISES REACTING THE POTASSIUM SALT OF RESORCINOL WITH A BROMIDE SELECTED FROM THE GROUP CONSISTING OF ARYL BROMOBENZENE, O-BROMOCHLOROBENZENE, M-BROMOCHLOROBENZENE, P-BROMOCHLOROBENZENE, O-DIBROMOBENZENE, P-DIBROMOBENZENE, M-DIBROMOBENZENE, O-BROMOTOLUENE, P-BROMOTOLUENE, M-BROMOTOLUENE, BROMO-O-XYLENE, BROMO-P-XYLENE, BROMO-M-XYLENE, O-BROMOETHYLBENZENE, P-BROMOETHYLBENZENE, M-BROMOETHYLBENZENE, BROMOPHENOXYBENZENE, BROMOPHENOXYCHLOROBENZENE, BROMODIPHENYL, 1-BROMONAPHTHALENE AND 2-BROMONAPHTHALENE, IN THE PRESENCE OF A CATALYTIC AMOUNT OF COPPER AT A TEMPERATURE OF FROM ABOUT 125* TO 185* C., AND IN THE PRESENCE OF A REACTION SOLVENT SELECTED FROM THE GROUP CONSISTING OF RESORCINOL AND A DIALKYL AMIDE.
Claim 2
Independent Claim
83 words
A METHOD FOR PREPARING M-PHENOXYPHENOLS WHICH COMPRISES REACTING THE POTASSIUM SALT OF RESORCINOL WITH A BROMIDE SELECTED FROM THE GROUP CONSISTING OF ARYL BROMOBENZENE, O-BROMOCHLOROBENZENE, M-BROMOCHLOROBENZENE, P-BROMOCHLOROBENZENE, O-DIBROMOBENZENE, P-DIBROMOBENZENE, M-DIBROMOBENZENE, O-BROMOTOLUENE, P-BROMOTOLUENE, M-BROMOTOLUENE, BROMO-O-XYLENE, BROMO-P-XYLENE, BROMO-M-XYLENE, O-BROMOETHYLBENZENE, P-BROMOETHYLBENZENE, M-BROMOETHYLBENZENE, BROMOPHENOXYBENZENE, BROMOPHENOXYCHLOROBENZENE, BROMODIPHENYL, 1-BROMONAPHTHALENE AND 2-BROMONAPHTHALENE, IN THE PRESENCE OF A CATALYTIC AMOUNT OF COPPER AT A TEMPERATURE OF FROM ABOUT 125* TO 185* C., AND IN THE PRESENCE OF A REACTION SOLVENT SELECTED FROM THE GROUP CONSISTING OF RESORCINOL AND A DIALKYL AMIDE.
References Cited (Backward Citations)
US1888827A
Cited
US3032594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |